src/tools.c

   1 // ============================================================================
   2 // Rocks'n'Diamonds - McDuffin Strikes Back!
   3 // ----------------------------------------------------------------------------
   4 // (c) 1995-2014 by Artsoft Entertainment
   5 //                  Holger Schemel
   6 //                  info@artsoft.org
   7 //                  https://www.artsoft.org/
   8 // ----------------------------------------------------------------------------
   9 // tools.c
  10 // ============================================================================
  11
  12 #include <math.h>
  13
  14 #include "libgame/libgame.h"
  15
  16 #include "tools.h"
  17 #include "init.h"
  18 #include "game.h"
  19 #include "events.h"
  20 #include "anim.h"
  21 #include "network.h"
  22 #include "tape.h"
  23 #include "screens.h"
  24
  25
  26 #define DEBUG_FRAME_TIME        FALSE
  27
  28 // tool button identifiers
  29 #define TOOL_CTRL_ID_YES        0
  30 #define TOOL_CTRL_ID_NO         1
  31 #define TOOL_CTRL_ID_CONFIRM    2
  32 #define TOOL_CTRL_ID_PLAYER_1   3
  33 #define TOOL_CTRL_ID_PLAYER_2   4
  34 #define TOOL_CTRL_ID_PLAYER_3   5
  35 #define TOOL_CTRL_ID_PLAYER_4   6
  36 #define TOOL_CTRL_ID_TOUCH_YES  7
  37 #define TOOL_CTRL_ID_TOUCH_NO   8
  38 #define TOOL_CTRL_ID_TOUCH_CONFIRM 9
  39
  40 #define NUM_TOOL_BUTTONS        10
  41
  42 // constants for number of doors and door parts
  43 #define NUM_DOORS               2
  44 #define NUM_PANELS              NUM_DOORS
  45 // #define NUM_PANELS           0
  46 #define MAX_PARTS_PER_DOOR      8
  47 #define MAX_DOOR_PARTS          (NUM_DOORS * MAX_PARTS_PER_DOOR + NUM_PANELS)
  48 #define DOOR_PART_IS_PANEL(i)   ((i) >= NUM_DOORS * MAX_PARTS_PER_DOOR)
  49
  50
  51 struct DoorPartOrderInfo
  52 {
  53   int nr;
  54   int sort_priority;
  55 };
  56
  57 static struct DoorPartOrderInfo door_part_order[MAX_DOOR_PARTS];
  58
  59 struct DoorPartControlInfo
  60 {
  61   int door_token;
  62   int graphic;
  63   struct DoorPartPosInfo *pos;
  64 };
  65
  66 static struct DoorPartControlInfo door_part_controls[] =
  67 {
  68   {
  69     DOOR_1,
  70     IMG_GFX_DOOR_1_PART_1,
  71     &door_1.part_1
  72   },
  73   {
  74     DOOR_1,
  75     IMG_GFX_DOOR_1_PART_2,
  76     &door_1.part_2
  77   },
  78   {
  79     DOOR_1,
  80     IMG_GFX_DOOR_1_PART_3,
  81     &door_1.part_3
  82   },
  83   {
  84     DOOR_1,
  85     IMG_GFX_DOOR_1_PART_4,
  86     &door_1.part_4
  87   },
  88   {
  89     DOOR_1,
  90     IMG_GFX_DOOR_1_PART_5,
  91     &door_1.part_5
  92   },
  93   {
  94     DOOR_1,
  95     IMG_GFX_DOOR_1_PART_6,
  96     &door_1.part_6
  97   },
  98   {
  99     DOOR_1,
 100     IMG_GFX_DOOR_1_PART_7,
 101     &door_1.part_7
 102   },
 103   {
 104     DOOR_1,
 105     IMG_GFX_DOOR_1_PART_8,
 106     &door_1.part_8
 107   },
 108
 109   {
 110     DOOR_2,
 111     IMG_GFX_DOOR_2_PART_1,
 112     &door_2.part_1
 113   },
 114   {
 115     DOOR_2,
 116     IMG_GFX_DOOR_2_PART_2,
 117     &door_2.part_2
 118   },
 119   {
 120     DOOR_2,
 121     IMG_GFX_DOOR_2_PART_3,
 122     &door_2.part_3
 123   },
 124   {
 125     DOOR_2,
 126     IMG_GFX_DOOR_2_PART_4,
 127     &door_2.part_4
 128   },
 129   {
 130     DOOR_2,
 131     IMG_GFX_DOOR_2_PART_5,
 132     &door_2.part_5
 133   },
 134   {
 135     DOOR_2,
 136     IMG_GFX_DOOR_2_PART_6,
 137     &door_2.part_6
 138   },
 139   {
 140     DOOR_2,
 141     IMG_GFX_DOOR_2_PART_7,
 142     &door_2.part_7
 143   },
 144   {
 145     DOOR_2,
 146     IMG_GFX_DOOR_2_PART_8,
 147     &door_2.part_8
 148   },
 149
 150   {
 151     DOOR_1,
 152     IMG_BACKGROUND_PANEL,
 153     &door_1.panel
 154   },
 155   {
 156     DOOR_2,
 157     IMG_BACKGROUND_TAPE,
 158     &door_2.panel
 159   },
 160
 161   {
 162     -1,
 163     -1,
 164     NULL
 165   }
 166 };
 167
 168 static struct XY xy_topdown[] =
 169 {
 170   {  0, -1 },
 171   { -1,  0 },
 172   { +1,  0 },
 173   {  0, +1 }
 174 };
 175
 176
 177 // forward declaration for internal use
 178 static void MapToolButtons(unsigned int);
 179 static void UnmapToolButtons(void);
 180 static void HandleToolButtons(struct GadgetInfo *);
 181 static int el_act_dir2crm(int, int, int);
 182 static int el_act2crm(int, int);
 183
 184 static struct GadgetInfo *tool_gadget[NUM_TOOL_BUTTONS];
 185 static int request_gadget_id = -1;
 186
 187 static char *print_if_not_empty(int element)
 188 {
 189   static char *s = NULL;
 190   char *token_name = element_info[element].token_name;
 191
 192   if (s != NULL)
 193     free(s);
 194
 195   s = checked_malloc(strlen(token_name) + 10 + 1);
 196
 197   if (element != EL_EMPTY)
 198     sprintf(s, "%d\t['%s']", element, token_name);
 199   else
 200     sprintf(s, "%d", element);
 201
 202   return s;
 203 }
 204
 205 int getFieldbufferOffsetX_RND(int dir, int pos)
 206 {
 207   int full_lev_fieldx = lev_fieldx + (BorderElement != EL_EMPTY ? 2 : 0);
 208   int dx = (dir & MV_HORIZONTAL ? pos : 0);
 209   int dx_var = dx * TILESIZE_VAR / TILESIZE;
 210   int fx = FX;
 211
 212   if (EVEN(SCR_FIELDX))
 213   {
 214     int sbx_right = SBX_Right + (BorderElement != EL_EMPTY ? 1 : 0);
 215     int ffx = (scroll_x - SBX_Left) * TILEX_VAR + dx_var;
 216
 217     if (ffx < sbx_right * TILEX_VAR + TILEX_VAR / 2)
 218       fx += dx_var - MIN(ffx, TILEX_VAR / 2) + TILEX_VAR;
 219     else
 220       fx += (dx_var > 0 ? TILEX_VAR : 0);
 221   }
 222   else
 223   {
 224     fx += dx_var;
 225   }
 226
 227   if (full_lev_fieldx <= SCR_FIELDX)
 228   {
 229     if (EVEN(SCR_FIELDX))
 230       fx = 2 * TILEX_VAR - (ODD(lev_fieldx)  ? TILEX_VAR / 2 : 0);
 231     else
 232       fx = 2 * TILEX_VAR - (EVEN(lev_fieldx) ? TILEX_VAR / 2 : 0);
 233   }
 234
 235   return fx;
 236 }
 237
 238 int getFieldbufferOffsetY_RND(int dir, int pos)
 239 {
 240   int full_lev_fieldy = lev_fieldy + (BorderElement != EL_EMPTY ? 2 : 0);
 241   int dy = (dir & MV_VERTICAL ? pos : 0);
 242   int dy_var = dy * TILESIZE_VAR / TILESIZE;
 243   int fy = FY;
 244
 245   if (EVEN(SCR_FIELDY))
 246   {
 247     int sby_lower = SBY_Lower + (BorderElement != EL_EMPTY ? 1 : 0);
 248     int ffy = (scroll_y - SBY_Upper) * TILEY_VAR + dy_var;
 249
 250     if (ffy < sby_lower * TILEY_VAR + TILEY_VAR / 2)
 251       fy += dy_var - MIN(ffy, TILEY_VAR / 2) + TILEY_VAR;
 252     else
 253       fy += (dy_var > 0 ? TILEY_VAR : 0);
 254   }
 255   else
 256   {
 257     fy += dy_var;
 258   }
 259
 260   if (full_lev_fieldy <= SCR_FIELDY)
 261   {
 262     if (EVEN(SCR_FIELDY))
 263       fy = 2 * TILEY_VAR - (ODD(lev_fieldy)  ? TILEY_VAR / 2 : 0);
 264     else
 265       fy = 2 * TILEY_VAR - (EVEN(lev_fieldy) ? TILEY_VAR / 2 : 0);
 266   }
 267
 268   return fy;
 269 }
 270
 271 static int getLevelFromScreenX_RND(int sx)
 272 {
 273   int fx = getFieldbufferOffsetX_RND(ScreenMovDir, ScreenGfxPos);
 274   int dx = fx - FX;
 275   int px = sx - SX;
 276   int lx = LEVELX((px + dx) / TILESIZE_VAR);
 277
 278   return lx;
 279 }
 280
 281 static int getLevelFromScreenY_RND(int sy)
 282 {
 283   int fy = getFieldbufferOffsetY_RND(ScreenMovDir, ScreenGfxPos);
 284   int dy = fy - FY;
 285   int py = sy - SY;
 286   int ly = LEVELY((py + dy) / TILESIZE_VAR);
 287
 288   return ly;
 289 }
 290
 291 static int getLevelFromScreenX_EM(int sx)
 292 {
 293   int level_xsize = level.native_em_level->cav->width;
 294   int full_xsize = level_xsize * TILESIZE_VAR;
 295
 296   sx -= (full_xsize < SXSIZE ? (SXSIZE - full_xsize) / 2 : 0);
 297
 298   int fx = getFieldbufferOffsetX_EM();
 299   int dx = fx;
 300   int px = sx - SX;
 301   int lx = LEVELX((px + dx) / TILESIZE_VAR);
 302
 303   return lx;
 304 }
 305
 306 static int getLevelFromScreenY_EM(int sy)
 307 {
 308   int level_ysize = level.native_em_level->cav->height;
 309   int full_ysize = level_ysize * TILESIZE_VAR;
 310
 311   sy -= (full_ysize < SYSIZE ? (SYSIZE - full_ysize) / 2 : 0);
 312
 313   int fy = getFieldbufferOffsetY_EM();
 314   int dy = fy;
 315   int py = sy - SY;
 316   int ly = LEVELY((py + dy) / TILESIZE_VAR);
 317
 318   return ly;
 319 }
 320
 321 static int getLevelFromScreenX_SP(int sx)
 322 {
 323   int menBorder = setup.sp_show_border_elements;
 324   int level_xsize = level.native_sp_level->width;
 325   int full_xsize = (level_xsize - (menBorder ? 0 : 1)) * TILESIZE_VAR;
 326
 327   sx += (full_xsize < SXSIZE ? (SXSIZE - full_xsize) / 2 : 0);
 328
 329   int fx = getFieldbufferOffsetX_SP();
 330   int dx = fx - FX;
 331   int px = sx - SX;
 332   int lx = LEVELX((px + dx) / TILESIZE_VAR);
 333
 334   return lx;
 335 }
 336
 337 static int getLevelFromScreenY_SP(int sy)
 338 {
 339   int menBorder = setup.sp_show_border_elements;
 340   int level_ysize = level.native_sp_level->height;
 341   int full_ysize = (level_ysize - (menBorder ? 0 : 1)) * TILESIZE_VAR;
 342
 343   sy += (full_ysize < SYSIZE ? (SYSIZE - full_ysize) / 2 : 0);
 344
 345   int fy = getFieldbufferOffsetY_SP();
 346   int dy = fy - FY;
 347   int py = sy - SY;
 348   int ly = LEVELY((py + dy) / TILESIZE_VAR);
 349
 350   return ly;
 351 }
 352
 353 static int getLevelFromScreenX_MM(int sx)
 354 {
 355   int level_xsize = level.native_mm_level->fieldx;
 356   int full_xsize = level_xsize * TILESIZE_VAR;
 357
 358   sx -= (full_xsize < SXSIZE ? (SXSIZE - full_xsize) / 2 : 0);
 359
 360   int px = sx - SX;
 361   int lx = (px + TILESIZE_VAR) / TILESIZE_VAR - 1;
 362
 363   return lx;
 364 }
 365
 366 static int getLevelFromScreenY_MM(int sy)
 367 {
 368   int level_ysize = level.native_mm_level->fieldy;
 369   int full_ysize = level_ysize * TILESIZE_VAR;
 370
 371   sy -= (full_ysize < SYSIZE ? (SYSIZE - full_ysize) / 2 : 0);
 372
 373   int py = sy - SY;
 374   int ly = (py + TILESIZE_VAR) / TILESIZE_VAR - 1;
 375
 376   return ly;
 377 }
 378
 379 int getLevelFromScreenX(int x)
 380 {
 381   if (level.game_engine_type == GAME_ENGINE_TYPE_EM)
 382     return getLevelFromScreenX_EM(x);
 383   if (level.game_engine_type == GAME_ENGINE_TYPE_SP)
 384     return getLevelFromScreenX_SP(x);
 385   if (level.game_engine_type == GAME_ENGINE_TYPE_MM)
 386     return getLevelFromScreenX_MM(x);
 387   else
 388     return getLevelFromScreenX_RND(x);
 389 }
 390
 391 int getLevelFromScreenY(int y)
 392 {
 393   if (level.game_engine_type == GAME_ENGINE_TYPE_EM)
 394     return getLevelFromScreenY_EM(y);
 395   if (level.game_engine_type == GAME_ENGINE_TYPE_SP)
 396     return getLevelFromScreenY_SP(y);
 397   if (level.game_engine_type == GAME_ENGINE_TYPE_MM)
 398     return getLevelFromScreenY_MM(y);
 399   else
 400     return getLevelFromScreenY_RND(y);
 401 }
 402
 403 int getScreenFieldSizeX(void)
 404 {
 405   return (tape.playing ? tape.scr_fieldx : SCR_FIELDX);
 406 }
 407
 408 int getScreenFieldSizeY(void)
 409 {
 410   return (tape.playing ? tape.scr_fieldy : SCR_FIELDY);
 411 }
 412
 413 void DumpTile(int x, int y)
 414 {
 415   int sx = SCREENX(x);
 416   int sy = SCREENY(y);
 417   char *token_name;
 418
 419   Info("---");
 420   Info("Field Info: SCREEN(%d, %d), LEVEL(%d, %d)", sx, sy, x, y);
 421   Info("---");
 422
 423   if (!IN_LEV_FIELD(x, y))
 424   {
 425     Info("(not in level field)");
 426     Info("");
 427
 428     return;
 429   }
 430
 431   token_name = element_info[Tile[x][y]].token_name;
 432
 433   Info("Tile:        %d\t['%s']",       Tile[x][y], token_name);
 434   Info("Back:        %s",               print_if_not_empty(Back[x][y]));
 435   Info("Store:       %s",               print_if_not_empty(Store[x][y]));
 436   Info("Store2:      %s",               print_if_not_empty(Store2[x][y]));
 437   Info("StorePlayer: %s",               print_if_not_empty(StorePlayer[x][y]));
 438   Info("MovPos:      %d",               MovPos[x][y]);
 439   Info("MovDir:      %d",               MovDir[x][y]);
 440   Info("MovDelay:    %d",               MovDelay[x][y]);
 441   Info("ChangeDelay: %d",               ChangeDelay[x][y]);
 442   Info("CustomValue: %d",               CustomValue[x][y]);
 443   Info("GfxElement:  %d",               GfxElement[x][y]);
 444   Info("GfxAction:   %d",               GfxAction[x][y]);
 445   Info("GfxFrame:    %d [%d]",          GfxFrame[x][y], FrameCounter);
 446   Info("Player x/y:  %d, %d",           local_player->jx, local_player->jy);
 447   Info("");
 448 }
 449
 450 void DumpTileFromScreen(int sx, int sy)
 451 {
 452   int lx = getLevelFromScreenX(sx);
 453   int ly = getLevelFromScreenY(sy);
 454
 455   DumpTile(lx, ly);
 456 }
 457
 458 void SetDrawtoField(int mode)
 459 {
 460   if (mode == DRAW_TO_FIELDBUFFER)
 461   {
 462     FX = 2 * TILEX_VAR;
 463     FY = 2 * TILEY_VAR;
 464     BX1 = -2;
 465     BY1 = -2;
 466     BX2 = SCR_FIELDX + 1;
 467     BY2 = SCR_FIELDY + 1;
 468
 469     drawto_field = fieldbuffer;
 470   }
 471   else  // DRAW_TO_BACKBUFFER
 472   {
 473     FX = SX;
 474     FY = SY;
 475     BX1 = 0;
 476     BY1 = 0;
 477     BX2 = SCR_FIELDX - 1;
 478     BY2 = SCR_FIELDY - 1;
 479
 480     drawto_field = backbuffer;
 481   }
 482 }
 483
 484 int GetDrawtoField(void)
 485 {
 486   return (drawto_field == fieldbuffer ? DRAW_TO_FIELDBUFFER : DRAW_TO_BACKBUFFER);
 487 }
 488
 489 static void RedrawPlayfield_RND(void)
 490 {
 491   if (game.envelope_active)
 492     return;
 493
 494   DrawLevel(REDRAW_ALL);
 495   DrawAllPlayers();
 496 }
 497
 498 void RedrawPlayfield(void)
 499 {
 500   if (game_status != GAME_MODE_PLAYING)
 501     return;
 502
 503   if (level.game_engine_type == GAME_ENGINE_TYPE_BD)
 504     RedrawPlayfield_BD(TRUE);
 505   else if (level.game_engine_type == GAME_ENGINE_TYPE_EM)
 506     RedrawPlayfield_EM(TRUE);
 507   else if (level.game_engine_type == GAME_ENGINE_TYPE_SP)
 508     RedrawPlayfield_SP(TRUE);
 509   else if (level.game_engine_type == GAME_ENGINE_TYPE_MM)
 510     RedrawPlayfield_MM();
 511   else if (level.game_engine_type == GAME_ENGINE_TYPE_RND)
 512     RedrawPlayfield_RND();
 513
 514   BlitScreenToBitmap(backbuffer);
 515
 516   BlitBitmap(drawto, window, gfx.sx, gfx.sy, gfx.sxsize, gfx.sysize,
 517              gfx.sx, gfx.sy);
 518 }
 519
 520 static void DrawMaskedBorderExt_Rect(int x, int y, int width, int height,
 521                                      int draw_target)
 522 {
 523   Bitmap *src_bitmap = getGlobalBorderBitmapFromStatus(global.border_status);
 524   Bitmap *dst_bitmap = gfx.masked_border_bitmap_ptr;
 525
 526   // may happen for "border.draw_masked.*" with undefined "global.border.*"
 527   if (src_bitmap == NULL)
 528     return;
 529
 530   if (x == -1 && y == -1)
 531     return;
 532
 533   if (draw_target == DRAW_TO_SCREEN)
 534     BlitToScreenMasked(src_bitmap, x, y, width, height, x, y);
 535   else
 536     BlitBitmapMasked(src_bitmap, dst_bitmap, x, y, width, height, x, y);
 537 }
 538
 539 static void DrawMaskedBorderExt_FIELD(int draw_target)
 540 {
 541   if (global.border_status >= GAME_MODE_MAIN &&
 542       global.border_status <= GAME_MODE_PLAYING &&
 543       border.draw_masked[global.border_status])
 544     DrawMaskedBorderExt_Rect(REAL_SX, REAL_SY, FULL_SXSIZE, FULL_SYSIZE,
 545                              draw_target);
 546 }
 547
 548 static void DrawMaskedBorderExt_DOOR_1(int draw_target)
 549 {
 550   // when drawing to backbuffer, never draw border over open doors
 551   if (draw_target == DRAW_TO_BACKBUFFER &&
 552       (GetDoorState() & DOOR_OPEN_1))
 553     return;
 554
 555   if (border.draw_masked[GFX_SPECIAL_ARG_DOOR] &&
 556       (global.border_status != GAME_MODE_EDITOR ||
 557        border.draw_masked[GFX_SPECIAL_ARG_EDITOR]))
 558     DrawMaskedBorderExt_Rect(DX, DY, DXSIZE, DYSIZE, draw_target);
 559 }
 560
 561 static void DrawMaskedBorderExt_DOOR_2(int draw_target)
 562 {
 563   // when drawing to backbuffer, never draw border over open doors
 564   if (draw_target == DRAW_TO_BACKBUFFER &&
 565       (GetDoorState() & DOOR_OPEN_2))
 566     return;
 567
 568   if (border.draw_masked[GFX_SPECIAL_ARG_DOOR] &&
 569       global.border_status != GAME_MODE_EDITOR)
 570     DrawMaskedBorderExt_Rect(VX, VY, VXSIZE, VYSIZE, draw_target);
 571 }
 572
 573 static void DrawMaskedBorderExt_DOOR_3(int draw_target)
 574 {
 575   // currently not available
 576 }
 577
 578 static void DrawMaskedBorderExt_ALL(int draw_target)
 579 {
 580   DrawMaskedBorderExt_FIELD(draw_target);
 581   DrawMaskedBorderExt_DOOR_1(draw_target);
 582   DrawMaskedBorderExt_DOOR_2(draw_target);
 583   DrawMaskedBorderExt_DOOR_3(draw_target);
 584 }
 585
 586 static void DrawMaskedBorderExt(int redraw_mask, int draw_target)
 587 {
 588   // never draw masked screen borders on borderless screens
 589   if (global.border_status == GAME_MODE_LOADING ||
 590       global.border_status == GAME_MODE_TITLE)
 591     return;
 592
 593   if (redraw_mask & REDRAW_ALL)
 594     DrawMaskedBorderExt_ALL(draw_target);
 595   else
 596   {
 597     if (redraw_mask & REDRAW_FIELD)
 598       DrawMaskedBorderExt_FIELD(draw_target);
 599     if (redraw_mask & REDRAW_DOOR_1)
 600       DrawMaskedBorderExt_DOOR_1(draw_target);
 601     if (redraw_mask & REDRAW_DOOR_2)
 602       DrawMaskedBorderExt_DOOR_2(draw_target);
 603     if (redraw_mask & REDRAW_DOOR_3)
 604       DrawMaskedBorderExt_DOOR_3(draw_target);
 605   }
 606 }
 607
 608 void DrawMaskedBorder_FIELD(void)
 609 {
 610   DrawMaskedBorderExt_FIELD(DRAW_TO_BACKBUFFER);
 611 }
 612
 613 void DrawMaskedBorder(int redraw_mask)
 614 {
 615   DrawMaskedBorderExt(redraw_mask, DRAW_TO_BACKBUFFER);
 616 }
 617
 618 void DrawMaskedBorderToTarget(int draw_target)
 619 {
 620   if (draw_target == DRAW_TO_BACKBUFFER ||
 621       draw_target == DRAW_TO_SCREEN)
 622   {
 623     DrawMaskedBorderExt(REDRAW_ALL, draw_target);
 624   }
 625   else
 626   {
 627     int last_border_status = global.border_status;
 628
 629     if (draw_target == DRAW_TO_FADE_SOURCE)
 630     {
 631       global.border_status = gfx.fade_border_source_status;
 632       gfx.masked_border_bitmap_ptr = gfx.fade_bitmap_source;
 633     }
 634     else if (draw_target == DRAW_TO_FADE_TARGET)
 635     {
 636       global.border_status = gfx.fade_border_target_status;
 637       gfx.masked_border_bitmap_ptr = gfx.fade_bitmap_target;
 638     }
 639
 640     // always use global border for PLAYING when restarting the game
 641     if (global.border_status == GAME_MODE_PSEUDO_RESTARTING)
 642       global.border_status = GAME_MODE_PLAYING;
 643
 644     DrawMaskedBorderExt(REDRAW_ALL, draw_target);
 645
 646     global.border_status = last_border_status;
 647     gfx.masked_border_bitmap_ptr = backbuffer;
 648   }
 649 }
 650
 651 void DrawTileCursor(int draw_target, int drawing_stage)
 652 {
 653   int tile_cursor_active = (game_status == GAME_MODE_PLAYING);
 654
 655   DrawTileCursor_MM(draw_target, drawing_stage, tile_cursor_active);
 656 }
 657
 658 void BlitScreenToBitmapExt_RND(Bitmap *target_bitmap, int fx, int fy)
 659 {
 660   BlitBitmap(drawto_field, target_bitmap, fx, fy, SXSIZE, SYSIZE, SX, SY);
 661 }
 662
 663 void BlitScreenToBitmap_RND(Bitmap *target_bitmap)
 664 {
 665   int fx = getFieldbufferOffsetX_RND(ScreenMovDir, ScreenGfxPos);
 666   int fy = getFieldbufferOffsetY_RND(ScreenMovDir, ScreenGfxPos);
 667
 668   BlitScreenToBitmapExt_RND(target_bitmap, fx, fy);
 669 }
 670
 671 void BlitScreenToBitmap(Bitmap *target_bitmap)
 672 {
 673   if (level.game_engine_type == GAME_ENGINE_TYPE_BD)
 674     BlitScreenToBitmap_BD(target_bitmap);
 675   else if (level.game_engine_type == GAME_ENGINE_TYPE_EM)
 676     BlitScreenToBitmap_EM(target_bitmap);
 677   else if (level.game_engine_type == GAME_ENGINE_TYPE_SP)
 678     BlitScreenToBitmap_SP(target_bitmap);
 679   else if (level.game_engine_type == GAME_ENGINE_TYPE_MM)
 680     BlitScreenToBitmap_MM(target_bitmap);
 681   else if (level.game_engine_type == GAME_ENGINE_TYPE_RND)
 682     BlitScreenToBitmap_RND(target_bitmap);
 683
 684   redraw_mask |= REDRAW_FIELD;
 685 }
 686
 687 static void DrawFramesPerSecond(void)
 688 {
 689   char text[100];
 690   int font_nr = FONT_TEXT_2;
 691   int font_width = getFontWidth(font_nr);
 692   int draw_deactivation_mask = GetDrawDeactivationMask();
 693   boolean draw_masked = (draw_deactivation_mask == REDRAW_NONE);
 694
 695   // draw FPS with leading space (needed if field buffer deactivated)
 696   sprintf(text, " %04.1f fps", global.frames_per_second);
 697
 698   // override draw deactivation mask (required for invisible warp mode)
 699   SetDrawDeactivationMask(REDRAW_NONE);
 700
 701   // draw opaque FPS if field buffer deactivated, else draw masked FPS
 702   DrawTextExt(backbuffer, SX + SXSIZE - font_width * strlen(text), SY, text,
 703               font_nr, (draw_masked ? BLIT_MASKED : BLIT_OPAQUE));
 704
 705   // set draw deactivation mask to previous value
 706   SetDrawDeactivationMask(draw_deactivation_mask);
 707
 708   // force full-screen redraw in this frame
 709   redraw_mask = REDRAW_ALL;
 710 }
 711
 712 #if DEBUG_FRAME_TIME
 713 static void PrintFrameTimeDebugging(void)
 714 {
 715   static unsigned int last_counter = 0;
 716   unsigned int counter = Counter();
 717   int diff_1 = counter - last_counter;
 718   int diff_2 = diff_1 - GAME_FRAME_DELAY;
 719   int diff_2_max = 20;
 720   int diff_2_cut = MIN(ABS(diff_2), diff_2_max);
 721   char diff_bar[2 * diff_2_max + 5];
 722   int pos = 0;
 723   int i;
 724
 725   diff_bar[pos++] = (diff_2 < -diff_2_max ? '<' : ' ');
 726
 727   for (i = 0; i < diff_2_max; i++)
 728     diff_bar[pos++] = (diff_2 >= 0 ? ' ' :
 729                        i >= diff_2_max - diff_2_cut ? '-' : ' ');
 730
 731   diff_bar[pos++] = '|';
 732
 733   for (i = 0; i < diff_2_max; i++)
 734     diff_bar[pos++] = (diff_2 <= 0 ? ' ' : i < diff_2_cut ? '+' : ' ');
 735
 736   diff_bar[pos++] = (diff_2 > diff_2_max ? '>' : ' ');
 737
 738   diff_bar[pos++] = '\0';
 739
 740   Debug("time:frame", "%06d [%02d] [%c%02d] %s",
 741         counter,
 742         diff_1,
 743         (diff_2 < 0 ? '-' : diff_2 > 0 ? '+' : ' '), ABS(diff_2),
 744         diff_bar);
 745
 746   last_counter = counter;
 747 }
 748 #endif
 749
 750 static int unifiedRedrawMask(int mask)
 751 {
 752   if (mask & REDRAW_ALL)
 753     return REDRAW_ALL;
 754
 755   if (mask & REDRAW_FIELD && mask & REDRAW_DOORS)
 756     return REDRAW_ALL;
 757
 758   return mask;
 759 }
 760
 761 static boolean equalRedrawMasks(int mask_1, int mask_2)
 762 {
 763   return unifiedRedrawMask(mask_1) == unifiedRedrawMask(mask_2);
 764 }
 765
 766 void BackToFront(void)
 767 {
 768   static int last_redraw_mask = REDRAW_NONE;
 769
 770   // force screen redraw in every frame to continue drawing global animations
 771   // (but always use the last redraw mask to prevent unwanted side effects)
 772   if (redraw_mask == REDRAW_NONE)
 773     redraw_mask = last_redraw_mask;
 774
 775   last_redraw_mask = redraw_mask;
 776
 777 #if 1
 778   // masked border now drawn immediately when blitting backbuffer to window
 779 #else
 780   // draw masked border to all viewports, if defined
 781   DrawMaskedBorder(redraw_mask);
 782 #endif
 783
 784   // draw frames per second (only if debug mode is enabled)
 785   if (redraw_mask & REDRAW_FPS)
 786     DrawFramesPerSecond();
 787
 788   // remove playfield redraw before potentially merging with doors redraw
 789   if (DrawingDeactivated(REAL_SX, REAL_SY))
 790     redraw_mask &= ~REDRAW_FIELD;
 791
 792   // redraw complete window if both playfield and (some) doors need redraw
 793   if (redraw_mask & REDRAW_FIELD && redraw_mask & REDRAW_DOORS)
 794     redraw_mask = REDRAW_ALL;
 795
 796   /* although redrawing the whole window would be fine for normal gameplay,
 797      being able to only redraw the playfield is required for deactivating
 798      certain drawing areas (mainly playfield) to work, which is needed for
 799      warp-forward to be fast enough (by skipping redraw of most frames) */
 800
 801   if (redraw_mask & REDRAW_ALL)
 802   {
 803     BlitBitmap(backbuffer, window, 0, 0, WIN_XSIZE, WIN_YSIZE, 0, 0);
 804   }
 805   else if (redraw_mask & REDRAW_FIELD)
 806   {
 807     BlitBitmap(backbuffer, window,
 808                REAL_SX, REAL_SY, FULL_SXSIZE, FULL_SYSIZE, REAL_SX, REAL_SY);
 809   }
 810   else if (redraw_mask & REDRAW_DOORS)
 811   {
 812     // merge door areas to prevent calling screen redraw more than once
 813     int x1 = WIN_XSIZE;
 814     int y1 = WIN_YSIZE;
 815     int x2 = 0;
 816     int y2 = 0;
 817
 818     if (redraw_mask & REDRAW_DOOR_1)
 819     {
 820       x1 = MIN(x1, DX);
 821       y1 = MIN(y1, DY);
 822       x2 = MAX(x2, DX + DXSIZE);
 823       y2 = MAX(y2, DY + DYSIZE);
 824     }
 825
 826     if (redraw_mask & REDRAW_DOOR_2)
 827     {
 828       x1 = MIN(x1, VX);
 829       y1 = MIN(y1, VY);
 830       x2 = MAX(x2, VX + VXSIZE);
 831       y2 = MAX(y2, VY + VYSIZE);
 832     }
 833
 834     if (redraw_mask & REDRAW_DOOR_3)
 835     {
 836       x1 = MIN(x1, EX);
 837       y1 = MIN(y1, EY);
 838       x2 = MAX(x2, EX + EXSIZE);
 839       y2 = MAX(y2, EY + EYSIZE);
 840     }
 841
 842     // make sure that at least one pixel is blitted, and inside the screen
 843     // (else nothing is blitted, causing the animations not to be updated)
 844     x1 = MIN(MAX(0, x1), WIN_XSIZE - 1);
 845     y1 = MIN(MAX(0, y1), WIN_YSIZE - 1);
 846     x2 = MIN(MAX(1, x2), WIN_XSIZE);
 847     y2 = MIN(MAX(1, y2), WIN_YSIZE);
 848
 849     BlitBitmap(backbuffer, window, x1, y1, x2 - x1, y2 - y1, x1, y1);
 850   }
 851
 852   redraw_mask = REDRAW_NONE;
 853
 854 #if DEBUG_FRAME_TIME
 855   PrintFrameTimeDebugging();
 856 #endif
 857 }
 858
 859 void BackToFront_WithFrameDelay(unsigned int frame_delay_value)
 860 {
 861   unsigned int frame_delay_value_old = GetVideoFrameDelay();
 862
 863   SetVideoFrameDelay(frame_delay_value);
 864
 865   BackToFront();
 866
 867   SetVideoFrameDelay(frame_delay_value_old);
 868 }
 869
 870 static int fade_type_skip = FADE_TYPE_NONE;
 871
 872 static void FadeExt(int fade_mask, int fade_mode, int fade_type)
 873 {
 874   void (*draw_border_function)(void) = NULL;
 875   int x, y, width, height;
 876   int fade_delay, post_delay;
 877
 878   if (fade_type == FADE_TYPE_FADE_OUT)
 879   {
 880     if (fade_type_skip != FADE_TYPE_NONE)
 881     {
 882       // skip all fade operations until specified fade operation
 883       if (fade_type & fade_type_skip)
 884         fade_type_skip = FADE_TYPE_NONE;
 885
 886       return;
 887     }
 888
 889     if (fading.fade_mode & FADE_TYPE_TRANSFORM)
 890       return;
 891   }
 892
 893   redraw_mask |= fade_mask;
 894
 895   if (fade_type == FADE_TYPE_SKIP)
 896   {
 897     fade_type_skip = fade_mode;
 898
 899     return;
 900   }
 901
 902   fade_delay = fading.fade_delay;
 903   post_delay = (fade_mode == FADE_MODE_FADE_OUT ? fading.post_delay : 0);
 904
 905   if (fade_type_skip != FADE_TYPE_NONE)
 906   {
 907     // skip all fade operations until specified fade operation
 908     if (fade_type & fade_type_skip)
 909       fade_type_skip = FADE_TYPE_NONE;
 910
 911     fade_delay = 0;
 912   }
 913
 914   if (global.autoplay_leveldir)
 915   {
 916     return;
 917   }
 918
 919   if (fade_mask == REDRAW_FIELD)
 920   {
 921     x = FADE_SX;
 922     y = FADE_SY;
 923     width  = FADE_SXSIZE;
 924     height = FADE_SYSIZE;
 925
 926     if (border.draw_masked_when_fading)
 927       draw_border_function = DrawMaskedBorder_FIELD;    // update when fading
 928     else
 929       DrawMaskedBorder_FIELD();                         // draw once
 930   }
 931   else          // REDRAW_ALL
 932   {
 933     x = 0;
 934     y = 0;
 935     width  = WIN_XSIZE;
 936     height = WIN_YSIZE;
 937   }
 938
 939   // when switching screens without fading, set fade delay to zero
 940   if (!setup.fade_screens || fading.fade_mode == FADE_MODE_NONE)
 941     fade_delay = 0;
 942
 943   // do not display black frame when fading out without fade delay
 944   if (fade_mode == FADE_MODE_FADE_OUT && fade_delay == 0)
 945     return;
 946
 947   FadeRectangle(x, y, width, height, fade_mode, fade_delay, post_delay,
 948                 draw_border_function);
 949
 950   redraw_mask &= ~fade_mask;
 951
 952   ClearAutoRepeatKeyEvents();
 953 }
 954
 955 static void SetScreenStates_BeforeFadingIn(void)
 956 {
 957   // temporarily set screen mode for animations to screen after fading in
 958   global.anim_status = global.anim_status_next;
 959
 960   // store backbuffer with all animations that will be started after fading in
 961   PrepareFadeBitmap(DRAW_TO_FADE_TARGET);
 962
 963   // set screen mode for animations back to fading
 964   global.anim_status = GAME_MODE_PSEUDO_FADING;
 965 }
 966
 967 static void SetScreenStates_AfterFadingIn(void)
 968 {
 969   // store new source screen (to use correct masked border for fading)
 970   gfx.fade_border_source_status = global.border_status;
 971
 972   global.anim_status = global.anim_status_next;
 973 }
 974
 975 static void SetScreenStates_BeforeFadingOut(void)
 976 {
 977   // store new target screen (to use correct masked border for fading)
 978   gfx.fade_border_target_status = game_status;
 979
 980   // set screen mode for animations to fading
 981   global.anim_status = GAME_MODE_PSEUDO_FADING;
 982
 983   // store backbuffer with all animations that will be stopped for fading out
 984   PrepareFadeBitmap(DRAW_TO_FADE_SOURCE);
 985 }
 986
 987 static void SetScreenStates_AfterFadingOut(void)
 988 {
 989   global.border_status = game_status;
 990
 991   // always use global border for PLAYING when restarting the game
 992   if (global.border_status == GAME_MODE_PSEUDO_RESTARTING)
 993     global.border_status = GAME_MODE_PLAYING;
 994 }
 995
 996 void FadeIn(int fade_mask)
 997 {
 998   SetScreenStates_BeforeFadingIn();
 999
1000 #if 1
1001   DrawMaskedBorder(REDRAW_ALL);
1002 #endif
1003
1004   if (fading.fade_mode & FADE_TYPE_TRANSFORM)
1005     FadeExt(fade_mask, fading.fade_mode, FADE_TYPE_FADE_IN);
1006   else
1007     FadeExt(fade_mask, FADE_MODE_FADE_IN, FADE_TYPE_FADE_IN);
1008
1009   FADE_SX = REAL_SX;
1010   FADE_SY = REAL_SY;
1011   FADE_SXSIZE = FULL_SXSIZE;
1012   FADE_SYSIZE = FULL_SYSIZE;
1013
1014   // activate virtual buttons depending on upcoming game status
1015   if (strEqual(setup.touch.control_type, TOUCH_CONTROL_VIRTUAL_BUTTONS) &&
1016       game_status == GAME_MODE_PLAYING && !tape.playing)
1017     SetOverlayActive(TRUE);
1018
1019   SetScreenStates_AfterFadingIn();
1020
1021   // force update of global animation status in case of rapid screen changes
1022   redraw_mask = REDRAW_ALL;
1023   BackToFront();
1024 }
1025
1026 void FadeOut(int fade_mask)
1027 {
1028   // update screen if areas covered by "fade_mask" and "redraw_mask" differ
1029   if (!equalRedrawMasks(fade_mask, redraw_mask) &&
1030       fade_type_skip != FADE_MODE_SKIP_FADE_OUT)
1031     BackToFront();
1032
1033   // when using BD game engine, cover playfield before fading out after a game
1034   if (game_bd.cover_screen)
1035     CoverScreen_BD();
1036
1037   SetScreenStates_BeforeFadingOut();
1038
1039   SetTileCursorActive(FALSE);
1040   SetOverlayActive(FALSE);
1041
1042 #if 0
1043   DrawMaskedBorder(REDRAW_ALL);
1044 #endif
1045
1046   if (fading.fade_mode & FADE_TYPE_TRANSFORM)
1047     FadeExt(fade_mask, fading.fade_mode, FADE_TYPE_FADE_OUT);
1048   else
1049     FadeExt(fade_mask, FADE_MODE_FADE_OUT, FADE_TYPE_FADE_OUT);
1050
1051   SetScreenStates_AfterFadingOut();
1052 }
1053
1054 static void FadeSetLeaveNext(struct TitleFadingInfo fading_leave, boolean set)
1055 {
1056   static struct TitleFadingInfo fading_leave_stored;
1057
1058   if (set)
1059     fading_leave_stored = fading_leave;
1060   else
1061     fading = fading_leave_stored;
1062 }
1063
1064 void FadeSetEnterMenu(void)
1065 {
1066   fading = menu.enter_menu;
1067
1068   FadeSetLeaveNext(fading, TRUE);       // (keep same fade mode)
1069 }
1070
1071 void FadeSetLeaveMenu(void)
1072 {
1073   fading = menu.leave_menu;
1074
1075   FadeSetLeaveNext(fading, TRUE);       // (keep same fade mode)
1076 }
1077
1078 void FadeSetEnterScreen(void)
1079 {
1080   fading = menu.enter_screen[game_status];
1081
1082   FadeSetLeaveNext(menu.leave_screen[game_status], TRUE);       // store
1083 }
1084
1085 void FadeSetNextScreen(void)
1086 {
1087   fading = menu.next_screen[game_status];
1088
1089   // (do not overwrite fade mode set by FadeSetEnterScreen)
1090   // FadeSetLeaveNext(fading, TRUE);    // (keep same fade mode)
1091 }
1092
1093 void FadeSetLeaveScreen(void)
1094 {
1095   FadeSetLeaveNext(menu.leave_screen[game_status], FALSE);      // recall
1096 }
1097
1098 void FadeSetFromType(int type)
1099 {
1100   if (type & TYPE_ENTER_SCREEN)
1101     FadeSetEnterScreen();
1102   else if (type & TYPE_ENTER)
1103     FadeSetEnterMenu();
1104   else if (type & TYPE_LEAVE)
1105     FadeSetLeaveMenu();
1106 }
1107
1108 void FadeSetDisabled(void)
1109 {
1110   static struct TitleFadingInfo fading_none = { FADE_MODE_NONE, -1, -1, -1 };
1111
1112   fading = fading_none;
1113 }
1114
1115 void FadeSkipNextFadeIn(void)
1116 {
1117   FadeExt(0, FADE_MODE_SKIP_FADE_IN, FADE_TYPE_SKIP);
1118 }
1119
1120 void FadeSkipNextFadeOut(void)
1121 {
1122   FadeExt(0, FADE_MODE_SKIP_FADE_OUT, FADE_TYPE_SKIP);
1123 }
1124
1125 static int getGlobalGameStatus(int status)
1126 {
1127   return (status == GAME_MODE_PSEUDO_TYPENAME ? GAME_MODE_MAIN :
1128           status == GAME_MODE_SCOREINFO       ? GAME_MODE_SCORES :
1129           status);
1130 }
1131
1132 int getImageFromGraphicOrDefault(int graphic, int default_graphic)
1133 {
1134   if (graphic == IMG_UNDEFINED)
1135     return IMG_UNDEFINED;
1136
1137   boolean redefined = getImageListEntryFromImageID(graphic)->redefined;
1138
1139   return (graphic_info[graphic].bitmap != NULL || redefined ?
1140           graphic : default_graphic);
1141 }
1142
1143 static int getBackgroundImage(int graphic)
1144 {
1145   return getImageFromGraphicOrDefault(graphic, IMG_BACKGROUND);
1146 }
1147
1148 static int getGlobalBorderImage(int graphic)
1149 {
1150   return getImageFromGraphicOrDefault(graphic, IMG_GLOBAL_BORDER);
1151 }
1152
1153 Bitmap *getGlobalBorderBitmapFromStatus(int status_raw)
1154 {
1155   int status = getGlobalGameStatus(status_raw);
1156   int graphic =
1157     (status == GAME_MODE_MAIN    ? IMG_GLOBAL_BORDER_MAIN :
1158      status == GAME_MODE_SCORES  ? IMG_GLOBAL_BORDER_SCORES :
1159      status == GAME_MODE_EDITOR  ? IMG_GLOBAL_BORDER_EDITOR :
1160      status == GAME_MODE_PLAYING ? IMG_GLOBAL_BORDER_PLAYING :
1161      IMG_GLOBAL_BORDER);
1162   int graphic_final = getGlobalBorderImage(graphic);
1163
1164   return graphic_info[graphic_final].bitmap;
1165 }
1166
1167 void SetBackgroundImage(int graphic, int redraw_mask)
1168 {
1169   struct GraphicInfo *g = &graphic_info[graphic];
1170   struct GraphicInfo g_undefined = { 0 };
1171
1172   if (graphic == IMG_UNDEFINED)
1173     g = &g_undefined;
1174
1175   // always use original size bitmap for backgrounds, if existing
1176   Bitmap *bitmap = (g->bitmaps != NULL &&
1177                     g->bitmaps[IMG_BITMAP_PTR_ORIGINAL] != NULL ?
1178                     g->bitmaps[IMG_BITMAP_PTR_ORIGINAL] : g->bitmap);
1179
1180   // remove every mask before setting mask for window, and
1181   // remove window area mask before setting mask for main or door area
1182   int remove_mask = (redraw_mask == REDRAW_ALL ? 0xffff : REDRAW_ALL);
1183
1184   // (!!! TO BE FIXED: The whole REDRAW_* system really sucks! !!!)
1185   SetBackgroundBitmap(NULL, remove_mask, 0, 0, 0, 0);   // !!! FIX THIS !!!
1186   SetBackgroundBitmap(bitmap, redraw_mask,
1187                       g->src_x, g->src_y,
1188                       g->width, g->height);
1189 }
1190
1191 void SetWindowBackgroundImageIfDefined(int graphic)
1192 {
1193   if (graphic_info[graphic].bitmap)
1194     SetBackgroundImage(graphic, REDRAW_ALL);
1195 }
1196
1197 void SetMainBackgroundImageIfDefined(int graphic)
1198 {
1199   if (graphic_info[graphic].bitmap)
1200     SetBackgroundImage(graphic, REDRAW_FIELD);
1201 }
1202
1203 void SetDoorBackgroundImageIfDefined(int graphic)
1204 {
1205   if (graphic_info[graphic].bitmap)
1206     SetBackgroundImage(graphic, REDRAW_DOOR_1);
1207 }
1208
1209 void SetWindowBackgroundImage(int graphic)
1210 {
1211   SetBackgroundImage(getBackgroundImage(graphic), REDRAW_ALL);
1212 }
1213
1214 void SetMainBackgroundImage(int graphic)
1215 {
1216   SetBackgroundImage(getBackgroundImage(graphic), REDRAW_FIELD);
1217 }
1218
1219 void SetDoorBackgroundImage(int graphic)
1220 {
1221   SetBackgroundImage(getBackgroundImage(graphic), REDRAW_DOOR_1);
1222 }
1223
1224 void SetPanelBackground(void)
1225 {
1226   SetDoorBackgroundImage(IMG_BACKGROUND_PANEL);
1227 }
1228
1229 void DrawBackground(int x, int y, int width, int height)
1230 {
1231   // "drawto" might still point to playfield buffer here (hall of fame)
1232   ClearRectangleOnBackground(backbuffer, x, y, width, height);
1233
1234   if (IN_GFX_FIELD_FULL(x, y))
1235     redraw_mask |= REDRAW_FIELD;
1236   else if (IN_GFX_DOOR_1(x, y))
1237     redraw_mask |= REDRAW_DOOR_1;
1238   else if (IN_GFX_DOOR_2(x, y))
1239     redraw_mask |= REDRAW_DOOR_2;
1240   else if (IN_GFX_DOOR_3(x, y))
1241     redraw_mask |= REDRAW_DOOR_3;
1242 }
1243
1244 void DrawBackgroundForFont(int x, int y, int width, int height, int font_nr)
1245 {
1246   struct FontBitmapInfo *font = getFontBitmapInfo(font_nr);
1247
1248   if (font->bitmap == NULL)
1249     return;
1250
1251   DrawBackground(x, y, width, height);
1252 }
1253
1254 void DrawBackgroundForGraphic(int x, int y, int width, int height, int graphic)
1255 {
1256   struct GraphicInfo *g = &graphic_info[graphic];
1257
1258   if (g->bitmap == NULL)
1259     return;
1260
1261   DrawBackground(x, y, width, height);
1262 }
1263
1264 static int game_status_last = -1;
1265 static Bitmap *global_border_bitmap_last = NULL;
1266 static Bitmap *global_border_bitmap = NULL;
1267 static int real_sx_last = -1, real_sy_last = -1;
1268 static int full_sxsize_last = -1, full_sysize_last = -1;
1269 static int dx_last = -1, dy_last = -1;
1270 static int dxsize_last = -1, dysize_last = -1;
1271 static int vx_last = -1, vy_last = -1;
1272 static int vxsize_last = -1, vysize_last = -1;
1273 static int ex_last = -1, ey_last = -1;
1274 static int exsize_last = -1, eysize_last = -1;
1275
1276 boolean CheckIfGlobalBorderHasChanged(void)
1277 {
1278   // if game status has not changed, global border has not changed either
1279   if (game_status == game_status_last)
1280     return FALSE;
1281
1282   // determine and store new global border bitmap for current game status
1283   global_border_bitmap = getGlobalBorderBitmapFromStatus(game_status);
1284
1285   return (global_border_bitmap_last != global_border_bitmap);
1286 }
1287
1288 #define ONLY_REDRAW_GLOBAL_BORDER_IF_NEEDED             0
1289
1290 #if ONLY_REDRAW_GLOBAL_BORDER_IF_NEEDED
1291 static boolean CheckIfGlobalBorderRedrawIsNeeded(void)
1292 {
1293   // if game status has not changed, nothing has to be redrawn
1294   if (game_status == game_status_last)
1295     return FALSE;
1296
1297   // redraw if last screen was title screen
1298   if (game_status_last == GAME_MODE_TITLE)
1299     return TRUE;
1300
1301   // redraw if global screen border has changed
1302   if (CheckIfGlobalBorderHasChanged())
1303     return TRUE;
1304
1305   // redraw if position or size of playfield area has changed
1306   if (real_sx_last != REAL_SX || real_sy_last != REAL_SY ||
1307       full_sxsize_last != FULL_SXSIZE || full_sysize_last != FULL_SYSIZE)
1308     return TRUE;
1309
1310   // redraw if position or size of door area has changed
1311   if (dx_last != DX || dy_last != DY ||
1312       dxsize_last != DXSIZE || dysize_last != DYSIZE)
1313     return TRUE;
1314
1315   // redraw if position or size of tape area has changed
1316   if (vx_last != VX || vy_last != VY ||
1317       vxsize_last != VXSIZE || vysize_last != VYSIZE)
1318     return TRUE;
1319
1320   // redraw if position or size of editor area has changed
1321   if (ex_last != EX || ey_last != EY ||
1322       exsize_last != EXSIZE || eysize_last != EYSIZE)
1323     return TRUE;
1324
1325   return FALSE;
1326 }
1327 #endif
1328
1329 static void RedrawGlobalBorderFromBitmap(Bitmap *bitmap)
1330 {
1331   if (bitmap)
1332     BlitBitmap(bitmap, backbuffer, 0, 0, WIN_XSIZE, WIN_YSIZE, 0, 0);
1333   else
1334     ClearRectangle(backbuffer, 0, 0, WIN_XSIZE, WIN_YSIZE);
1335 }
1336
1337 void RedrawGlobalBorder(void)
1338 {
1339   Bitmap *bitmap = getGlobalBorderBitmapFromStatus(game_status);
1340
1341   RedrawGlobalBorderFromBitmap(bitmap);
1342
1343   redraw_mask = REDRAW_ALL;
1344 }
1345
1346 static void RedrawGlobalBorderIfNeeded(void)
1347 {
1348 #if ONLY_REDRAW_GLOBAL_BORDER_IF_NEEDED
1349   if (game_status == game_status_last)
1350     return;
1351 #endif
1352
1353   // copy current draw buffer to later copy back areas that have not changed
1354   if (game_status_last != GAME_MODE_TITLE)
1355     BlitBitmap(backbuffer, bitmap_db_store_1, 0, 0, WIN_XSIZE, WIN_YSIZE, 0, 0);
1356
1357 #if ONLY_REDRAW_GLOBAL_BORDER_IF_NEEDED
1358   if (CheckIfGlobalBorderRedrawIsNeeded())
1359 #else
1360   // determine and store new global border bitmap for current game status
1361   global_border_bitmap = getGlobalBorderBitmapFromStatus(game_status);
1362 #endif
1363   {
1364     // redraw global screen border (or clear, if defined to be empty)
1365     RedrawGlobalBorderFromBitmap(global_border_bitmap);
1366
1367     if (game_status == GAME_MODE_EDITOR)
1368       DrawSpecialEditorDoor();
1369
1370     // copy previous playfield and door areas, if they are defined on both
1371     // previous and current screen and if they still have the same size
1372
1373     if (real_sx_last != -1 && real_sy_last != -1 &&
1374         REAL_SX != -1 && REAL_SY != -1 &&
1375         full_sxsize_last == FULL_SXSIZE && full_sysize_last == FULL_SYSIZE)
1376       BlitBitmap(bitmap_db_store_1, backbuffer,
1377                  real_sx_last, real_sy_last, FULL_SXSIZE, FULL_SYSIZE,
1378                  REAL_SX, REAL_SY);
1379
1380     if (dx_last != -1 && dy_last != -1 &&
1381         DX != -1 && DY != -1 &&
1382         dxsize_last == DXSIZE && dysize_last == DYSIZE)
1383       BlitBitmap(bitmap_db_store_1, backbuffer,
1384                  dx_last, dy_last, DXSIZE, DYSIZE, DX, DY);
1385
1386     if (game_status != GAME_MODE_EDITOR)
1387     {
1388       if (vx_last != -1 && vy_last != -1 &&
1389           VX != -1 && VY != -1 &&
1390           vxsize_last == VXSIZE && vysize_last == VYSIZE)
1391         BlitBitmap(bitmap_db_store_1, backbuffer,
1392                    vx_last, vy_last, VXSIZE, VYSIZE, VX, VY);
1393     }
1394     else
1395     {
1396       if (ex_last != -1 && ey_last != -1 &&
1397           EX != -1 && EY != -1 &&
1398           exsize_last == EXSIZE && eysize_last == EYSIZE)
1399         BlitBitmap(bitmap_db_store_1, backbuffer,
1400                    ex_last, ey_last, EXSIZE, EYSIZE, EX, EY);
1401     }
1402
1403     redraw_mask = REDRAW_ALL;
1404   }
1405
1406   game_status_last = game_status;
1407
1408   global_border_bitmap_last = global_border_bitmap;
1409
1410   real_sx_last = REAL_SX;
1411   real_sy_last = REAL_SY;
1412   full_sxsize_last = FULL_SXSIZE;
1413   full_sysize_last = FULL_SYSIZE;
1414   dx_last = DX;
1415   dy_last = DY;
1416   dxsize_last = DXSIZE;
1417   dysize_last = DYSIZE;
1418   vx_last = VX;
1419   vy_last = VY;
1420   vxsize_last = VXSIZE;
1421   vysize_last = VYSIZE;
1422   ex_last = EX;
1423   ey_last = EY;
1424   exsize_last = EXSIZE;
1425   eysize_last = EYSIZE;
1426 }
1427
1428 void ClearField(void)
1429 {
1430   RedrawGlobalBorderIfNeeded();
1431
1432   // !!! "drawto" might still point to playfield buffer here (see above) !!!
1433   // (when entering hall of fame after playing)
1434   DrawBackground(REAL_SX, REAL_SY, FULL_SXSIZE, FULL_SYSIZE);
1435
1436   // !!! maybe this should be done before clearing the background !!!
1437   if (game_status == GAME_MODE_PLAYING)
1438   {
1439     ClearRectangle(fieldbuffer, 0, 0, FXSIZE, FYSIZE);
1440     SetDrawtoField(DRAW_TO_FIELDBUFFER);
1441   }
1442   else
1443   {
1444     SetDrawtoField(DRAW_TO_BACKBUFFER);
1445   }
1446 }
1447
1448 void MarkTileDirty(int x, int y)
1449 {
1450   redraw_mask |= REDRAW_FIELD;
1451 }
1452
1453 void SetBorderElement(void)
1454 {
1455   int x, y;
1456
1457   BorderElement = EL_EMPTY;
1458
1459   // only the R'n'D game engine may use an additional steelwall border
1460   if (level.game_engine_type != GAME_ENGINE_TYPE_RND)
1461     return;
1462
1463   for (y = 0; y < lev_fieldy && BorderElement == EL_EMPTY; y++)
1464   {
1465     for (x = 0; x < lev_fieldx; x++)
1466     {
1467       if (!IS_INDESTRUCTIBLE(Tile[x][y]))
1468         BorderElement = EL_STEELWALL;
1469
1470       if (y != 0 && y != lev_fieldy - 1 && x != lev_fieldx - 1)
1471         x = lev_fieldx - 2;
1472     }
1473   }
1474 }
1475
1476 void FloodFillLevelExt(int start_x, int start_y, int fill_element,
1477                        int max_array_fieldx, int max_array_fieldy,
1478                        short field[max_array_fieldx][max_array_fieldy],
1479                        int max_fieldx, int max_fieldy)
1480 {
1481   static struct XY stack_buffer[MAX_LEV_FIELDX * MAX_LEV_FIELDY];
1482   struct XY *check = xy_topdown;
1483   int old_element = field[start_x][start_y];
1484   int stack_pos = 0;
1485
1486   // do nothing if start field already has the desired content
1487   if (old_element == fill_element)
1488     return;
1489
1490   stack_buffer[stack_pos++] = (struct XY){ start_x, start_y };
1491
1492   while (stack_pos > 0)
1493   {
1494     struct XY current = stack_buffer[--stack_pos];
1495     int i;
1496
1497     field[current.x][current.y] = fill_element;
1498
1499     for (i = 0; i < 4; i++)
1500     {
1501       int x = current.x + check[i].x;
1502       int y = current.y + check[i].y;
1503
1504       // check for stack buffer overflow (should not happen)
1505       if (stack_pos >= MAX_LEV_FIELDX * MAX_LEV_FIELDY)
1506         Fail("Stack buffer overflow in 'FloodFillLevelExt()'. Please debug.");
1507
1508       if (IN_FIELD(x, y, max_fieldx, max_fieldy) && field[x][y] == old_element)
1509         stack_buffer[stack_pos++] = (struct XY){ x, y };
1510     }
1511   }
1512 }
1513
1514 void FloodFillLevel(int from_x, int from_y, int fill_element,
1515                     short field[MAX_LEV_FIELDX][MAX_LEV_FIELDY],
1516                     int max_fieldx, int max_fieldy)
1517 {
1518   FloodFillLevelExt(from_x, from_y, fill_element,
1519                     MAX_LEV_FIELDX, MAX_LEV_FIELDY, field,
1520                     max_fieldx, max_fieldy);
1521 }
1522
1523 void SetRandomAnimationValue(int x, int y)
1524 {
1525   gfx.anim_random_frame = GfxRandom[x][y];
1526 }
1527
1528 void SetAnimationFirstLevel(int first_level)
1529 {
1530   gfx.anim_first_level = first_level;
1531 }
1532
1533 int getGraphicAnimationFrame(int graphic, int sync_frame)
1534 {
1535   // animation synchronized with global frame counter, not move position
1536   if (graphic_info[graphic].anim_global_sync || sync_frame < 0)
1537     sync_frame = FrameCounter;
1538   else if (graphic_info[graphic].anim_global_anim_sync)
1539     sync_frame = getGlobalAnimSyncFrame();
1540
1541   return getAnimationFrame(graphic_info[graphic].anim_frames,
1542                            graphic_info[graphic].anim_delay,
1543                            graphic_info[graphic].anim_mode,
1544                            graphic_info[graphic].anim_start_frame,
1545                            sync_frame);
1546 }
1547
1548 int getGraphicAnimationFrameXY(int graphic, int lx, int ly)
1549 {
1550   if (graphic_info[graphic].anim_mode & ANIM_TILED)
1551   {
1552     struct GraphicInfo *g = &graphic_info[graphic];
1553     int xsize = MAX(1, g->anim_frames_per_line);
1554     int ysize = MAX(1, g->anim_frames / xsize);
1555     int xoffset = g->anim_start_frame % xsize;
1556     int yoffset = g->anim_start_frame % ysize;
1557     // may be needed if screen field is significantly larger than playfield
1558     int x = (lx + xoffset + SCR_FIELDX * xsize) % xsize;
1559     int y = (ly + yoffset + SCR_FIELDY * ysize) % ysize;
1560     int sync_frame = y * xsize + x;
1561
1562     return sync_frame % g->anim_frames;
1563   }
1564   else if (graphic_info[graphic].anim_mode & ANIM_RANDOM_STATIC)
1565   {
1566     struct GraphicInfo *g = &graphic_info[graphic];
1567     // may be needed if screen field is significantly larger than playfield
1568     int x = (lx + SCR_FIELDX * lev_fieldx) % lev_fieldx;
1569     int y = (ly + SCR_FIELDY * lev_fieldy) % lev_fieldy;
1570     int sync_frame = GfxRandomStatic[x][y];
1571
1572     return sync_frame % g->anim_frames;
1573   }
1574   else
1575   {
1576     int sync_frame = (IN_LEV_FIELD(lx, ly) ? GfxFrame[lx][ly] : -1);
1577
1578     return getGraphicAnimationFrame(graphic, sync_frame);
1579   }
1580 }
1581
1582 void getGraphicSourceBitmap(int graphic, int tilesize, Bitmap **bitmap)
1583 {
1584   struct GraphicInfo *g = &graphic_info[graphic];
1585   int tilesize_capped = MIN(MAX(1, tilesize), TILESIZE);
1586
1587   if (tilesize == gfx.standard_tile_size)
1588     *bitmap = g->bitmaps[IMG_BITMAP_STANDARD];
1589   else if (tilesize == game.tile_size)
1590     *bitmap = g->bitmaps[IMG_BITMAP_PTR_GAME];
1591   else
1592     *bitmap = g->bitmaps[IMG_BITMAP_1x1 - log_2(tilesize_capped)];
1593 }
1594
1595 void getGraphicSourceXY(int graphic, int frame, int *x, int *y,
1596                         boolean get_backside)
1597 {
1598   struct GraphicInfo *g = &graphic_info[graphic];
1599   int src_x = g->src_x + (get_backside ? g->offset2_x : 0);
1600   int src_y = g->src_y + (get_backside ? g->offset2_y : 0);
1601
1602   if (g->offset_y == 0)         // frames are ordered horizontally
1603   {
1604     int max_width = g->anim_frames_per_line * g->width;
1605     int pos = (src_y / g->height) * max_width + src_x + frame * g->offset_x;
1606
1607     *x = pos % max_width;
1608     *y = src_y % g->height + pos / max_width * g->height;
1609   }
1610   else if (g->offset_x == 0)    // frames are ordered vertically
1611   {
1612     int max_height = g->anim_frames_per_line * g->height;
1613     int pos = (src_x / g->width) * max_height + src_y + frame * g->offset_y;
1614
1615     *x = src_x % g->width + pos / max_height * g->width;
1616     *y = pos % max_height;
1617   }
1618   else                          // frames are ordered diagonally
1619   {
1620     *x = src_x + frame * g->offset_x;
1621     *y = src_y + frame * g->offset_y;
1622   }
1623 }
1624
1625 void getSizedGraphicSourceExt(int graphic, int frame, int tilesize,
1626                               Bitmap **bitmap, int *x, int *y,
1627                               boolean get_backside)
1628 {
1629   struct GraphicInfo *g = &graphic_info[graphic];
1630
1631   // if no graphics defined at all, use fallback graphics
1632   if (g->bitmaps == NULL)
1633     *g = graphic_info[IMG_CHAR_EXCLAM];
1634
1635   // if no in-game graphics defined, always use standard graphic size
1636   if (g->bitmaps[IMG_BITMAP_PTR_GAME] == NULL)
1637     tilesize = TILESIZE;
1638
1639   getGraphicSourceBitmap(graphic, tilesize, bitmap);
1640   getGraphicSourceXY(graphic, frame, x, y, get_backside);
1641
1642   *x = *x * tilesize / g->tile_size;
1643   *y = *y * tilesize / g->tile_size;
1644 }
1645
1646 void getSizedGraphicSource(int graphic, int frame, int tilesize,
1647                            Bitmap **bitmap, int *x, int *y)
1648 {
1649   getSizedGraphicSourceExt(graphic, frame, tilesize, bitmap, x, y, FALSE);
1650 }
1651
1652 void getFixedGraphicSource(int graphic, int frame,
1653                            Bitmap **bitmap, int *x, int *y)
1654 {
1655   getSizedGraphicSourceExt(graphic, frame, TILESIZE, bitmap, x, y, FALSE);
1656 }
1657
1658 void getMiniGraphicSource(int graphic, Bitmap **bitmap, int *x, int *y)
1659 {
1660   getSizedGraphicSource(graphic, 0, MINI_TILESIZE, bitmap, x, y);
1661 }
1662
1663 void getGlobalAnimGraphicSource(int graphic, int frame,
1664                                 Bitmap **bitmap, int *x, int *y)
1665 {
1666   struct GraphicInfo *g = &graphic_info[graphic];
1667
1668   // if no graphics defined at all, use fallback graphics
1669   if (g->bitmaps == NULL)
1670     *g = graphic_info[IMG_CHAR_EXCLAM];
1671
1672   // use original size graphics, if existing, else use standard size graphics
1673   if (g->bitmaps[IMG_BITMAP_PTR_ORIGINAL])
1674     *bitmap = g->bitmaps[IMG_BITMAP_PTR_ORIGINAL];
1675   else
1676     *bitmap = g->bitmaps[IMG_BITMAP_STANDARD];
1677
1678   getGraphicSourceXY(graphic, frame, x, y, FALSE);
1679 }
1680
1681 static void getGraphicSourceExt(int graphic, int frame, Bitmap **bitmap,
1682                                 int *x, int *y, boolean get_backside)
1683 {
1684   getSizedGraphicSourceExt(graphic, frame, TILESIZE_VAR, bitmap, x, y,
1685                            get_backside);
1686 }
1687
1688 void getGraphicSource(int graphic, int frame, Bitmap **bitmap, int *x, int *y)
1689 {
1690   getGraphicSourceExt(graphic, frame, bitmap, x, y, FALSE);
1691 }
1692
1693 void DrawGraphic(int x, int y, int graphic, int frame)
1694 {
1695 #if DEBUG
1696   if (!IN_SCR_FIELD(x, y))
1697   {
1698     Debug("draw:DrawGraphic", "x = %d, y = %d, graphic = %d", x, y, graphic);
1699     Debug("draw:DrawGraphic", "This should never happen!");
1700
1701     return;
1702   }
1703 #endif
1704
1705   DrawGraphicExt(drawto_field, FX + x * TILEX_VAR, FY + y * TILEY_VAR, graphic,
1706                  frame);
1707
1708   MarkTileDirty(x, y);
1709 }
1710
1711 void DrawFixedGraphic(int x, int y, int graphic, int frame)
1712 {
1713 #if DEBUG
1714   if (!IN_SCR_FIELD(x, y))
1715   {
1716     Debug("draw:DrawFixedGraphic", "x = %d, y = %d, graphic = %d",
1717           x, y, graphic);
1718     Debug("draw:DrawFixedGraphic", "This should never happen!");
1719
1720     return;
1721   }
1722 #endif
1723
1724   DrawFixedGraphicExt(drawto_field, FX + x * TILEX, FY + y * TILEY, graphic,
1725                       frame);
1726   MarkTileDirty(x, y);
1727 }
1728
1729 void DrawGraphicExt(DrawBuffer *dst_bitmap, int x, int y, int graphic,
1730                     int frame)
1731 {
1732   Bitmap *src_bitmap;
1733   int src_x, src_y;
1734
1735   getGraphicSource(graphic, frame, &src_bitmap, &src_x, &src_y);
1736
1737   BlitBitmap(src_bitmap, dst_bitmap, src_x, src_y, TILEX_VAR, TILEY_VAR, x, y);
1738 }
1739
1740 void DrawFixedGraphicExt(DrawBuffer *dst_bitmap, int x, int y, int graphic,
1741                          int frame)
1742 {
1743   Bitmap *src_bitmap;
1744   int src_x, src_y;
1745
1746   getFixedGraphicSource(graphic, frame, &src_bitmap, &src_x, &src_y);
1747   BlitBitmap(src_bitmap, dst_bitmap, src_x, src_y, TILEX, TILEY, x, y);
1748 }
1749
1750 void DrawGraphicThruMask(int x, int y, int graphic, int frame)
1751 {
1752 #if DEBUG
1753   if (!IN_SCR_FIELD(x, y))
1754   {
1755     Debug("draw:DrawGraphicThruMask", "x = %d, y = %d, graphic = %d",
1756           x, y, graphic);
1757     Debug("draw:DrawGraphicThruMask", "This should never happen!");
1758
1759     return;
1760   }
1761 #endif
1762
1763   DrawGraphicThruMaskExt(drawto_field, FX + x * TILEX_VAR, FY + y * TILEY_VAR,
1764                          graphic, frame);
1765
1766   MarkTileDirty(x, y);
1767 }
1768
1769 void DrawFixedGraphicThruMask(int x, int y, int graphic, int frame)
1770 {
1771 #if DEBUG
1772   if (!IN_SCR_FIELD(x, y))
1773   {
1774     Debug("draw:DrawFixedGraphicThruMask", "x = %d, y = %d, graphic = %d",
1775           x, y, graphic);
1776     Debug("draw:DrawFixedGraphicThruMask", "This should never happen!");
1777
1778     return;
1779   }
1780 #endif
1781
1782   DrawFixedGraphicThruMaskExt(drawto_field, FX + x * TILEX, FY + y * TILEY,
1783                               graphic, frame);
1784   MarkTileDirty(x, y);
1785 }
1786
1787 void DrawGraphicThruMaskExt(DrawBuffer *d, int dst_x, int dst_y, int graphic,
1788                             int frame)
1789 {
1790   Bitmap *src_bitmap;
1791   int src_x, src_y;
1792
1793   getGraphicSource(graphic, frame, &src_bitmap, &src_x, &src_y);
1794
1795   BlitBitmapMasked(src_bitmap, d, src_x, src_y, TILEX_VAR, TILEY_VAR,
1796                    dst_x, dst_y);
1797 }
1798
1799 void DrawFixedGraphicThruMaskExt(DrawBuffer *d, int dst_x, int dst_y,
1800                                  int graphic, int frame)
1801 {
1802   Bitmap *src_bitmap;
1803   int src_x, src_y;
1804
1805   getFixedGraphicSource(graphic, frame, &src_bitmap, &src_x, &src_y);
1806
1807   BlitBitmapMasked(src_bitmap, d, src_x, src_y, TILEX, TILEY,
1808                    dst_x, dst_y);
1809 }
1810
1811 void DrawSizedGraphic(int x, int y, int graphic, int frame, int tilesize)
1812 {
1813   DrawSizedGraphicExt(drawto, SX + x * tilesize, SY + y * tilesize, graphic,
1814                       frame, tilesize);
1815   MarkTileDirty(x / tilesize, y / tilesize);
1816 }
1817
1818 void DrawSizedGraphicThruMask(int x, int y, int graphic, int frame,
1819                               int tilesize)
1820 {
1821   DrawSizedGraphicThruMaskExt(drawto, SX + x * tilesize, SY + y * tilesize,
1822                               graphic, frame, tilesize);
1823   MarkTileDirty(x / tilesize, y / tilesize);
1824 }
1825
1826 void DrawSizedGraphicExt(DrawBuffer *d, int x, int y, int graphic, int frame,
1827                          int tilesize)
1828 {
1829   Bitmap *src_bitmap;
1830   int src_x, src_y;
1831
1832   getSizedGraphicSource(graphic, frame, tilesize, &src_bitmap, &src_x, &src_y);
1833   BlitBitmap(src_bitmap, d, src_x, src_y, tilesize, tilesize, x, y);
1834 }
1835
1836 void DrawSizedGraphicThruMaskExt(DrawBuffer *d, int x, int y, int graphic,
1837                                  int frame, int tilesize)
1838 {
1839   Bitmap *src_bitmap;
1840   int src_x, src_y;
1841
1842   getSizedGraphicSource(graphic, frame, tilesize, &src_bitmap, &src_x, &src_y);
1843   BlitBitmapMasked(src_bitmap, d, src_x, src_y, tilesize, tilesize, x, y);
1844 }
1845
1846 void DrawMiniGraphic(int x, int y, int graphic)
1847 {
1848   DrawMiniGraphicExt(drawto, SX + x * MINI_TILEX, SY + y * MINI_TILEY, graphic);
1849   MarkTileDirty(x / 2, y / 2);
1850 }
1851
1852 void DrawMiniGraphicExt(DrawBuffer *d, int x, int y, int graphic)
1853 {
1854   Bitmap *src_bitmap;
1855   int src_x, src_y;
1856
1857   getMiniGraphicSource(graphic, &src_bitmap, &src_x, &src_y);
1858   BlitBitmap(src_bitmap, d, src_x, src_y, MINI_TILEX, MINI_TILEY, x, y);
1859 }
1860
1861 static void DrawGraphicShiftedNormal(int x, int y, int dx, int dy,
1862                                      int graphic, int frame,
1863                                      int cut_mode, int mask_mode)
1864 {
1865   Bitmap *src_bitmap;
1866   int src_x, src_y;
1867   int dst_x, dst_y;
1868   int width = TILEX, height = TILEY;
1869   int cx = 0, cy = 0;
1870
1871   if (dx || dy)                 // shifted graphic
1872   {
1873     if (x < BX1)                // object enters playfield from the left
1874     {
1875       x = BX1;
1876       width = dx;
1877       cx = TILEX - dx;
1878       dx = 0;
1879     }
1880     else if (x > BX2)           // object enters playfield from the right
1881     {
1882       x = BX2;
1883       width = -dx;
1884       dx = TILEX + dx;
1885     }
1886     else if (x == BX1 && dx < 0) // object leaves playfield to the left
1887     {
1888       width += dx;
1889       cx = -dx;
1890       dx = 0;
1891     }
1892     else if (x == BX2 && dx > 0) // object leaves playfield to the right
1893       width -= dx;
1894     else if (dx)                // general horizontal movement
1895       MarkTileDirty(x + SIGN(dx), y);
1896
1897     if (y < BY1)                // object enters playfield from the top
1898     {
1899       if (cut_mode == CUT_BELOW) // object completely above top border
1900         return;
1901
1902       y = BY1;
1903       height = dy;
1904       cy = TILEY - dy;
1905       dy = 0;
1906     }
1907     else if (y > BY2)           // object enters playfield from the bottom
1908     {
1909       y = BY2;
1910       height = -dy;
1911       dy = TILEY + dy;
1912     }
1913     else if (y == BY1 && dy < 0) // object leaves playfield to the top
1914     {
1915       height += dy;
1916       cy = -dy;
1917       dy = 0;
1918     }
1919     else if (dy > 0 && cut_mode == CUT_ABOVE)
1920     {
1921       if (y == BY2)             // object completely above bottom border
1922         return;
1923
1924       height = dy;
1925       cy = TILEY - dy;
1926       dy = TILEY;
1927       MarkTileDirty(x, y + 1);
1928     }                           // object leaves playfield to the bottom
1929     else if (dy > 0 && (y == BY2 || cut_mode == CUT_BELOW))
1930       height -= dy;
1931     else if (dy)                // general vertical movement
1932       MarkTileDirty(x, y + SIGN(dy));
1933   }
1934
1935 #if DEBUG
1936   if (!IN_SCR_FIELD(x, y))
1937   {
1938     Debug("draw:DrawGraphicShiftedNormal", "x = %d, y = %d, graphic = %d",
1939           x, y, graphic);
1940     Debug("draw:DrawGraphicShiftedNormal", "This should never happen!");
1941
1942     return;
1943   }
1944 #endif
1945
1946   width = width * TILESIZE_VAR / TILESIZE;
1947   height = height * TILESIZE_VAR / TILESIZE;
1948   cx = cx * TILESIZE_VAR / TILESIZE;
1949   cy = cy * TILESIZE_VAR / TILESIZE;
1950   dx = dx * TILESIZE_VAR / TILESIZE;
1951   dy = dy * TILESIZE_VAR / TILESIZE;
1952
1953   if (width > 0 && height > 0)
1954   {
1955     getGraphicSource(graphic, frame, &src_bitmap, &src_x, &src_y);
1956
1957     src_x += cx;
1958     src_y += cy;
1959
1960     dst_x = FX + x * TILEX_VAR + dx;
1961     dst_y = FY + y * TILEY_VAR + dy;
1962
1963     if (mask_mode == USE_MASKING)
1964       BlitBitmapMasked(src_bitmap, drawto_field, src_x, src_y, width, height,
1965                        dst_x, dst_y);
1966     else
1967       BlitBitmap(src_bitmap, drawto_field, src_x, src_y, width, height,
1968                  dst_x, dst_y);
1969
1970     MarkTileDirty(x, y);
1971   }
1972 }
1973
1974 static void DrawGraphicShiftedDouble(int x, int y, int dx, int dy,
1975                                      int graphic, int frame,
1976                                      int cut_mode, int mask_mode)
1977 {
1978   Bitmap *src_bitmap;
1979   int src_x, src_y;
1980   int dst_x, dst_y;
1981   int width = TILEX_VAR, height = TILEY_VAR;
1982   int x1 = x;
1983   int y1 = y;
1984   int x2 = x + SIGN(dx);
1985   int y2 = y + SIGN(dy);
1986
1987   // movement with two-tile animations must be sync'ed with movement position,
1988   // not with current GfxFrame (which can be higher when using slow movement)
1989   int anim_pos = (dx ? ABS(dx) : ABS(dy));
1990   int anim_frames = graphic_info[graphic].anim_frames;
1991
1992   // (we also need anim_delay here for movement animations with less frames)
1993   int anim_delay = graphic_info[graphic].anim_delay;
1994   int sync_frame = anim_pos * anim_frames * anim_delay / TILESIZE;
1995
1996   boolean draw_start_tile = (cut_mode != CUT_ABOVE);    // only for falling!
1997   boolean draw_end_tile   = (cut_mode != CUT_BELOW);    // only for falling!
1998
1999   // re-calculate animation frame for two-tile movement animation
2000   frame = getGraphicAnimationFrame(graphic, sync_frame);
2001
2002   // check if movement start graphic inside screen area and should be drawn
2003   if (draw_start_tile && IN_SCR_FIELD(x1, y1))
2004   {
2005     getGraphicSourceExt(graphic, frame, &src_bitmap, &src_x, &src_y, TRUE);
2006
2007     dst_x = FX + x1 * TILEX_VAR;
2008     dst_y = FY + y1 * TILEY_VAR;
2009
2010     if (mask_mode == USE_MASKING)
2011       BlitBitmapMasked(src_bitmap, drawto_field, src_x, src_y, width, height,
2012                        dst_x, dst_y);
2013     else
2014       BlitBitmap(src_bitmap, drawto_field, src_x, src_y, width, height,
2015                  dst_x, dst_y);
2016
2017     MarkTileDirty(x1, y1);
2018   }
2019
2020   // check if movement end graphic inside screen area and should be drawn
2021   if (draw_end_tile && IN_SCR_FIELD(x2, y2))
2022   {
2023     getGraphicSourceExt(graphic, frame, &src_bitmap, &src_x, &src_y, FALSE);
2024
2025     dst_x = FX + x2 * TILEX_VAR;
2026     dst_y = FY + y2 * TILEY_VAR;
2027
2028     if (mask_mode == USE_MASKING)
2029       BlitBitmapMasked(src_bitmap, drawto_field, src_x, src_y, width, height,
2030                        dst_x, dst_y);
2031     else
2032       BlitBitmap(src_bitmap, drawto_field, src_x, src_y, width, height,
2033                  dst_x, dst_y);
2034
2035     MarkTileDirty(x2, y2);
2036   }
2037 }
2038
2039 static void DrawGraphicShifted(int x, int y, int dx, int dy,
2040                                int graphic, int frame,
2041                                int cut_mode, int mask_mode)
2042 {
2043   if (graphic < 0)
2044   {
2045     DrawGraphic(x, y, graphic, frame);
2046
2047     return;
2048   }
2049
2050   if (graphic_info[graphic].double_movement)    // EM style movement images
2051     DrawGraphicShiftedDouble(x, y, dx, dy, graphic, frame, cut_mode, mask_mode);
2052   else
2053     DrawGraphicShiftedNormal(x, y, dx, dy, graphic, frame, cut_mode, mask_mode);
2054 }
2055
2056 static void DrawGraphicShiftedThruMask(int x, int y, int dx, int dy,
2057                                        int graphic, int frame, int cut_mode)
2058 {
2059   DrawGraphicShifted(x, y, dx, dy, graphic, frame, cut_mode, USE_MASKING);
2060 }
2061
2062 void DrawScreenElementExt(int x, int y, int dx, int dy, int element,
2063                           int cut_mode, int mask_mode)
2064 {
2065   int lx = LEVELX(x), ly = LEVELY(y);
2066   int graphic;
2067   int frame;
2068
2069   if (IN_LEV_FIELD(lx, ly))
2070   {
2071     if (element == EL_EMPTY)
2072       element = GfxElementEmpty[lx][ly];
2073
2074     SetRandomAnimationValue(lx, ly);
2075
2076     graphic = el_act_dir2img(element, GfxAction[lx][ly], GfxDir[lx][ly]);
2077     frame = getGraphicAnimationFrameXY(graphic, lx, ly);
2078
2079     // do not use double (EM style) movement graphic when not moving
2080     if (graphic_info[graphic].double_movement && !dx && !dy)
2081     {
2082       graphic = el_act_dir2img(element, ACTION_DEFAULT, GfxDir[lx][ly]);
2083       frame = getGraphicAnimationFrameXY(graphic, lx, ly);
2084     }
2085
2086     if (game.use_masked_elements && (dx || dy))
2087       mask_mode = USE_MASKING;
2088   }
2089   else  // border element
2090   {
2091     graphic = el2img(element);
2092     frame = getGraphicAnimationFrameXY(graphic, lx, ly);
2093   }
2094
2095   if (element == EL_EXPANDABLE_WALL)
2096   {
2097     boolean left_stopped = FALSE, right_stopped = FALSE;
2098
2099     if (!IN_LEV_FIELD(lx - 1, ly) || IS_WALL(Tile[lx - 1][ly]))
2100       left_stopped = TRUE;
2101     if (!IN_LEV_FIELD(lx + 1, ly) || IS_WALL(Tile[lx + 1][ly]))
2102       right_stopped = TRUE;
2103
2104     if (left_stopped && right_stopped)
2105       graphic = IMG_WALL;
2106     else if (left_stopped)
2107     {
2108       graphic = IMG_EXPANDABLE_WALL_GROWING_RIGHT;
2109       frame = graphic_info[graphic].anim_frames - 1;
2110     }
2111     else if (right_stopped)
2112     {
2113       graphic = IMG_EXPANDABLE_WALL_GROWING_LEFT;
2114       frame = graphic_info[graphic].anim_frames - 1;
2115     }
2116   }
2117
2118   if (dx || dy)
2119     DrawGraphicShifted(x, y, dx, dy, graphic, frame, cut_mode, mask_mode);
2120   else if (mask_mode == USE_MASKING)
2121     DrawGraphicThruMask(x, y, graphic, frame);
2122   else
2123     DrawGraphic(x, y, graphic, frame);
2124 }
2125
2126 void DrawLevelElementExt(int x, int y, int dx, int dy, int element,
2127                          int cut_mode, int mask_mode)
2128 {
2129   if (IN_LEV_FIELD(x, y) && IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
2130     DrawScreenElementExt(SCREENX(x), SCREENY(y), dx, dy, element,
2131                          cut_mode, mask_mode);
2132 }
2133
2134 void DrawScreenElementShifted(int x, int y, int dx, int dy, int element,
2135                               int cut_mode)
2136 {
2137   DrawScreenElementExt(x, y, dx, dy, element, cut_mode, NO_MASKING);
2138 }
2139
2140 void DrawLevelElementShifted(int x, int y, int dx, int dy, int element,
2141                              int cut_mode)
2142 {
2143   DrawLevelElementExt(x, y, dx, dy, element, cut_mode, NO_MASKING);
2144 }
2145
2146 void DrawLevelElementThruMask(int x, int y, int element)
2147 {
2148   DrawLevelElementExt(x, y, 0, 0, element, NO_CUTTING, USE_MASKING);
2149 }
2150
2151 void DrawLevelFieldThruMask(int x, int y)
2152 {
2153   DrawLevelElementExt(x, y, 0, 0, Tile[x][y], NO_CUTTING, USE_MASKING);
2154 }
2155
2156 // !!! implementation of quicksand is totally broken !!!
2157 #define IS_CRUMBLED_TILE(x, y, e)                                       \
2158         (GFX_CRUMBLED(e) && (!IN_LEV_FIELD(x, y) ||                     \
2159                              !IS_MOVING(x, y) ||                        \
2160                              (e) == EL_QUICKSAND_EMPTYING ||            \
2161                              (e) == EL_QUICKSAND_FAST_EMPTYING))
2162
2163 static void DrawLevelFieldCrumbledInnerCorners(int x, int y, int dx, int dy,
2164                                                int graphic)
2165 {
2166   Bitmap *src_bitmap;
2167   int src_x, src_y;
2168   int width, height, cx, cy;
2169   int sx = SCREENX(x), sy = SCREENY(y);
2170   int crumbled_border_size = graphic_info[graphic].border_size;
2171   int crumbled_tile_size = graphic_info[graphic].tile_size;
2172   int crumbled_border_size_var =
2173     crumbled_border_size * TILESIZE_VAR / crumbled_tile_size;
2174   int i;
2175
2176   getGraphicSource(graphic, 0, &src_bitmap, &src_x, &src_y);
2177
2178   for (i = 1; i < 4; i++)
2179   {
2180     int dxx = (i & 1 ? dx : 0);
2181     int dyy = (i & 2 ? dy : 0);
2182     int xx = x + dxx;
2183     int yy = y + dyy;
2184     int element = (IN_LEV_FIELD(xx, yy) ? TILE_GFX_ELEMENT(xx, yy) :
2185                    BorderElement);
2186
2187     // check if neighbour field is of same crumble type
2188     boolean same = (IS_CRUMBLED_TILE(xx, yy, element) &&
2189                     graphic_info[graphic].class ==
2190                     graphic_info[el_act2crm(element, ACTION_DEFAULT)].class);
2191
2192     // return if check prevents inner corner
2193     if (same == (dxx == dx && dyy == dy))
2194       return;
2195   }
2196
2197   // if we reach this point, we have an inner corner
2198
2199   getGraphicSource(graphic, 1, &src_bitmap, &src_x, &src_y);
2200
2201   width  = crumbled_border_size_var;
2202   height = crumbled_border_size_var;
2203   cx = (dx > 0 ? TILESIZE_VAR - width  : 0);
2204   cy = (dy > 0 ? TILESIZE_VAR - height : 0);
2205
2206   if (game.use_masked_elements)
2207   {
2208     int graphic0 = el2img(EL_EMPTY);
2209     int frame0 = getGraphicAnimationFrameXY(graphic0, x, y);
2210     Bitmap *src_bitmap0;
2211     int src_x0, src_y0;
2212
2213     getGraphicSource(graphic0, frame0, &src_bitmap0, &src_x0, &src_y0);
2214
2215     BlitBitmap(src_bitmap0, drawto_field, src_x0 + cx, src_y0 + cy,
2216                width, height,
2217                FX + sx * TILEX_VAR + cx, FY + sy * TILEY_VAR + cy);
2218
2219     BlitBitmapMasked(src_bitmap, drawto_field, src_x + cx, src_y + cy,
2220                      width, height,
2221                      FX + sx * TILEX_VAR + cx, FY + sy * TILEY_VAR + cy);
2222   }
2223   else
2224     BlitBitmap(src_bitmap, drawto_field, src_x + cx, src_y + cy,
2225                width, height,
2226                FX + sx * TILEX_VAR + cx, FY + sy * TILEY_VAR + cy);
2227 }
2228
2229 static void DrawLevelFieldCrumbledBorders(int x, int y, int graphic, int frame,
2230                                           int dir)
2231 {
2232   Bitmap *src_bitmap;
2233   int src_x, src_y;
2234   int width, height, bx, by, cx, cy;
2235   int sx = SCREENX(x), sy = SCREENY(y);
2236   int crumbled_border_size = graphic_info[graphic].border_size;
2237   int crumbled_tile_size = graphic_info[graphic].tile_size;
2238   int crumbled_border_size_var =
2239     crumbled_border_size * TILESIZE_VAR / crumbled_tile_size;
2240   int crumbled_border_pos_var = TILESIZE_VAR - crumbled_border_size_var;
2241   int i;
2242
2243   getGraphicSource(graphic, frame, &src_bitmap, &src_x, &src_y);
2244
2245   // only needed when using masked elements
2246   int graphic0 = el2img(EL_EMPTY);
2247   int frame0 = getGraphicAnimationFrameXY(graphic0, x, y);
2248   Bitmap *src_bitmap0;
2249   int src_x0, src_y0;
2250
2251   if (game.use_masked_elements)
2252     getGraphicSource(graphic0, frame0, &src_bitmap0, &src_x0, &src_y0);
2253
2254   // draw simple, sloppy, non-corner-accurate crumbled border
2255
2256   width  = (dir == 1 || dir == 2 ? crumbled_border_size_var : TILESIZE_VAR);
2257   height = (dir == 0 || dir == 3 ? crumbled_border_size_var : TILESIZE_VAR);
2258   cx = (dir == 2 ? crumbled_border_pos_var : 0);
2259   cy = (dir == 3 ? crumbled_border_pos_var : 0);
2260
2261   if (game.use_masked_elements)
2262   {
2263     BlitBitmap(src_bitmap0, drawto_field, src_x0 + cx, src_y0 + cy,
2264                width, height,
2265                FX + sx * TILEX_VAR + cx,
2266                FY + sy * TILEY_VAR + cy);
2267
2268     BlitBitmapMasked(src_bitmap, drawto_field, src_x + cx, src_y + cy,
2269                      width, height,
2270                      FX + sx * TILEX_VAR + cx,
2271                      FY + sy * TILEY_VAR + cy);
2272   }
2273   else
2274     BlitBitmap(src_bitmap, drawto_field, src_x + cx, src_y + cy,
2275                width, height,
2276                FX + sx * TILEX_VAR + cx,
2277                FY + sy * TILEY_VAR + cy);
2278
2279   // (remaining middle border part must be at least as big as corner part)
2280   if (!(graphic_info[graphic].style & STYLE_ACCURATE_BORDERS) ||
2281       crumbled_border_size_var >= TILESIZE_VAR / 3)
2282     return;
2283
2284   // correct corners of crumbled border, if needed
2285
2286   for (i = -1; i <= 1; i += 2)
2287   {
2288     int xx = x + (dir == 0 || dir == 3 ? i : 0);
2289     int yy = y + (dir == 1 || dir == 2 ? i : 0);
2290     int element = (IN_LEV_FIELD(xx, yy) ? TILE_GFX_ELEMENT(xx, yy) :
2291                    BorderElement);
2292
2293     // check if neighbour field is of same crumble type
2294     if (IS_CRUMBLED_TILE(xx, yy, element) &&
2295         graphic_info[graphic].class ==
2296         graphic_info[el_act2crm(element, ACTION_DEFAULT)].class)
2297     {
2298       // no crumbled corner, but continued crumbled border
2299
2300       int c1 = (dir == 2 || dir == 3 ? crumbled_border_pos_var : 0);
2301       int c2 = (i == 1 ? crumbled_border_pos_var : 0);
2302       int b1 = (i == 1 ? crumbled_border_size_var :
2303                 TILESIZE_VAR - 2 * crumbled_border_size_var);
2304
2305       width  = crumbled_border_size_var;
2306       height = crumbled_border_size_var;
2307
2308       if (dir == 1 || dir == 2)
2309       {
2310         cx = c1;
2311         cy = c2;
2312         bx = cx;
2313         by = b1;
2314       }
2315       else
2316       {
2317         cx = c2;
2318         cy = c1;
2319         bx = b1;
2320         by = cy;
2321       }
2322
2323       if (game.use_masked_elements)
2324       {
2325         BlitBitmap(src_bitmap0, drawto_field, src_x0 + bx, src_y0 + by,
2326                    width, height,
2327                    FX + sx * TILEX_VAR + cx,
2328                    FY + sy * TILEY_VAR + cy);
2329
2330         BlitBitmapMasked(src_bitmap, drawto_field, src_x + bx, src_y + by,
2331                          width, height,
2332                          FX + sx * TILEX_VAR + cx,
2333                          FY + sy * TILEY_VAR + cy);
2334       }
2335       else
2336         BlitBitmap(src_bitmap, drawto_field, src_x + bx, src_y + by,
2337                    width, height,
2338                    FX + sx * TILEX_VAR + cx,
2339                    FY + sy * TILEY_VAR + cy);
2340     }
2341   }
2342 }
2343
2344 static void DrawLevelFieldCrumbledExt(int x, int y, int graphic, int frame)
2345 {
2346   int sx = SCREENX(x), sy = SCREENY(y);
2347   int element;
2348   int i;
2349   struct XY *xy = xy_topdown;
2350
2351   if (!IN_LEV_FIELD(x, y))
2352     return;
2353
2354   element = TILE_GFX_ELEMENT(x, y);
2355
2356   if (IS_CRUMBLED_TILE(x, y, element))          // crumble field itself
2357   {
2358     if (!IN_SCR_FIELD(sx, sy))
2359       return;
2360
2361     // crumble field borders towards direct neighbour fields
2362     for (i = 0; i < 4; i++)
2363     {
2364       int xx = x + xy[i].x;
2365       int yy = y + xy[i].y;
2366
2367       element = (IN_LEV_FIELD(xx, yy) ? TILE_GFX_ELEMENT(xx, yy) :
2368                  BorderElement);
2369
2370       // check if neighbour field is of same crumble type
2371       if (IS_CRUMBLED_TILE(xx, yy, element) &&
2372           graphic_info[graphic].class ==
2373           graphic_info[el_act2crm(element, ACTION_DEFAULT)].class)
2374         continue;
2375
2376       DrawLevelFieldCrumbledBorders(x, y, graphic, frame, i);
2377     }
2378
2379     // crumble inner field corners towards corner neighbour fields
2380     if ((graphic_info[graphic].style & STYLE_INNER_CORNERS) &&
2381         graphic_info[graphic].anim_frames == 2)
2382     {
2383       for (i = 0; i < 4; i++)
2384       {
2385         int dx = (i & 1 ? +1 : -1);
2386         int dy = (i & 2 ? +1 : -1);
2387
2388         DrawLevelFieldCrumbledInnerCorners(x, y, dx, dy, graphic);
2389       }
2390     }
2391
2392     MarkTileDirty(sx, sy);
2393   }
2394   else          // center field is not crumbled -- crumble neighbour fields
2395   {
2396     // crumble field borders of direct neighbour fields
2397     for (i = 0; i < 4; i++)
2398     {
2399       int xx = x + xy[i].x;
2400       int yy = y + xy[i].y;
2401       int sxx = sx + xy[i].x;
2402       int syy = sy + xy[i].y;
2403
2404       if (!IN_LEV_FIELD(xx, yy) ||
2405           !IN_SCR_FIELD(sxx, syy))
2406         continue;
2407
2408       // do not crumble fields that are being digged or snapped
2409       if (Tile[xx][yy] == EL_EMPTY ||
2410           Tile[xx][yy] == EL_ELEMENT_SNAPPING)
2411         continue;
2412
2413       element = TILE_GFX_ELEMENT(xx, yy);
2414
2415       if (!IS_CRUMBLED_TILE(xx, yy, element))
2416         continue;
2417
2418       graphic = el_act2crm(element, ACTION_DEFAULT);
2419
2420       DrawLevelFieldCrumbledBorders(xx, yy, graphic, 0, 3 - i);
2421
2422       MarkTileDirty(sxx, syy);
2423     }
2424
2425     // crumble inner field corners of corner neighbour fields
2426     for (i = 0; i < 4; i++)
2427     {
2428       int dx = (i & 1 ? +1 : -1);
2429       int dy = (i & 2 ? +1 : -1);
2430       int xx = x + dx;
2431       int yy = y + dy;
2432       int sxx = sx + dx;
2433       int syy = sy + dy;
2434
2435       if (!IN_LEV_FIELD(xx, yy) ||
2436           !IN_SCR_FIELD(sxx, syy))
2437         continue;
2438
2439       if (Tile[xx][yy] == EL_ELEMENT_SNAPPING)
2440         continue;
2441
2442       element = TILE_GFX_ELEMENT(xx, yy);
2443
2444       if (!IS_CRUMBLED_TILE(xx, yy, element))
2445         continue;
2446
2447       graphic = el_act2crm(element, ACTION_DEFAULT);
2448
2449       if ((graphic_info[graphic].style & STYLE_INNER_CORNERS) &&
2450           graphic_info[graphic].anim_frames == 2)
2451         DrawLevelFieldCrumbledInnerCorners(xx, yy, -dx, -dy, graphic);
2452
2453       MarkTileDirty(sxx, syy);
2454     }
2455   }
2456 }
2457
2458 void DrawLevelFieldCrumbled(int x, int y)
2459 {
2460   int graphic;
2461
2462   if (!IN_LEV_FIELD(x, y))
2463     return;
2464
2465   if (Tile[x][y] == EL_ELEMENT_SNAPPING &&
2466       GfxElement[x][y] != EL_UNDEFINED &&
2467       GFX_CRUMBLED(GfxElement[x][y]))
2468   {
2469     DrawLevelFieldCrumbledDigging(x, y, GfxDir[x][y], GfxFrame[x][y]);
2470
2471     return;
2472   }
2473
2474   graphic = el_act2crm(TILE_GFX_ELEMENT(x, y), ACTION_DEFAULT);
2475
2476   DrawLevelFieldCrumbledExt(x, y, graphic, 0);
2477 }
2478
2479 void DrawLevelFieldCrumbledDigging(int x, int y, int direction,
2480                                    int step_frame)
2481 {
2482   int graphic1 = el_act_dir2img(GfxElement[x][y], ACTION_DIGGING, direction);
2483   int graphic2 = el_act_dir2crm(GfxElement[x][y], ACTION_DIGGING, direction);
2484   int frame1 = getGraphicAnimationFrame(graphic1, step_frame);
2485   int frame2 = getGraphicAnimationFrame(graphic2, step_frame);
2486   int sx = SCREENX(x), sy = SCREENY(y);
2487
2488   DrawScreenGraphic(sx, sy, graphic1, frame1);
2489   DrawLevelFieldCrumbledExt(x, y, graphic2, frame2);
2490 }
2491
2492 void DrawLevelFieldCrumbledNeighbours(int x, int y)
2493 {
2494   int sx = SCREENX(x), sy = SCREENY(y);
2495   struct XY *xy = xy_topdown;
2496   int i;
2497
2498   // crumble direct neighbour fields (required for field borders)
2499   for (i = 0; i < 4; i++)
2500   {
2501     int xx = x + xy[i].x;
2502     int yy = y + xy[i].y;
2503     int sxx = sx + xy[i].x;
2504     int syy = sy + xy[i].y;
2505
2506     if (!IN_LEV_FIELD(xx, yy) ||
2507         !IN_SCR_FIELD(sxx, syy) ||
2508         !GFX_CRUMBLED(Tile[xx][yy]) ||
2509         IS_MOVING(xx, yy))
2510       continue;
2511
2512     DrawLevelField(xx, yy);
2513   }
2514
2515   // crumble corner neighbour fields (required for inner field corners)
2516   for (i = 0; i < 4; i++)
2517   {
2518     int dx = (i & 1 ? +1 : -1);
2519     int dy = (i & 2 ? +1 : -1);
2520     int xx = x + dx;
2521     int yy = y + dy;
2522     int sxx = sx + dx;
2523     int syy = sy + dy;
2524
2525     if (!IN_LEV_FIELD(xx, yy) ||
2526         !IN_SCR_FIELD(sxx, syy) ||
2527         !GFX_CRUMBLED(Tile[xx][yy]) ||
2528         IS_MOVING(xx, yy))
2529       continue;
2530
2531     int element = TILE_GFX_ELEMENT(xx, yy);
2532     int graphic = el_act2crm(element, ACTION_DEFAULT);
2533
2534     if ((graphic_info[graphic].style & STYLE_INNER_CORNERS) &&
2535         graphic_info[graphic].anim_frames == 2)
2536       DrawLevelField(xx, yy);
2537   }
2538 }
2539
2540 static int getBorderElement(int x, int y)
2541 {
2542   int border[7][2] =
2543   {
2544     { EL_STEELWALL_TOPLEFT,             EL_INVISIBLE_STEELWALL_TOPLEFT     },
2545     { EL_STEELWALL_TOPRIGHT,            EL_INVISIBLE_STEELWALL_TOPRIGHT    },
2546     { EL_STEELWALL_BOTTOMLEFT,          EL_INVISIBLE_STEELWALL_BOTTOMLEFT  },
2547     { EL_STEELWALL_BOTTOMRIGHT,         EL_INVISIBLE_STEELWALL_BOTTOMRIGHT },
2548     { EL_STEELWALL_VERTICAL,            EL_INVISIBLE_STEELWALL_VERTICAL    },
2549     { EL_STEELWALL_HORIZONTAL,          EL_INVISIBLE_STEELWALL_HORIZONTAL  },
2550     { EL_STEELWALL,                     EL_INVISIBLE_STEELWALL             }
2551   };
2552   int steel_type = (BorderElement == EL_STEELWALL ? 0 : 1);
2553   int steel_position = (x == -1         && y == -1              ? 0 :
2554                         x == lev_fieldx && y == -1              ? 1 :
2555                         x == -1         && y == lev_fieldy      ? 2 :
2556                         x == lev_fieldx && y == lev_fieldy      ? 3 :
2557                         x == -1         || x == lev_fieldx      ? 4 :
2558                         y == -1         || y == lev_fieldy      ? 5 : 6);
2559
2560   return border[steel_position][steel_type];
2561 }
2562
2563 void DrawScreenGraphic(int x, int y, int graphic, int frame)
2564 {
2565   if (game.use_masked_elements)
2566   {
2567     if (graphic != el2img(EL_EMPTY))
2568       DrawScreenElementExt(x, y, 0, 0, EL_EMPTY, NO_CUTTING, NO_MASKING);
2569
2570     DrawGraphicThruMask(x, y, graphic, frame);
2571   }
2572   else
2573   {
2574     DrawGraphic(x, y, graphic, frame);
2575   }
2576 }
2577
2578 void DrawLevelGraphic(int x, int y, int graphic, int frame)
2579 {
2580   DrawScreenGraphic(SCREENX(x), SCREENY(y), graphic, frame);
2581 }
2582
2583 void DrawScreenElement(int x, int y, int element)
2584 {
2585   int mask_mode = NO_MASKING;
2586
2587   if (game.use_masked_elements)
2588   {
2589     int lx = LEVELX(x), ly = LEVELY(y);
2590
2591     if (IN_LEV_FIELD(lx, ly) && element != EL_EMPTY)
2592     {
2593       DrawScreenElementExt(x, y, 0, 0, EL_EMPTY, NO_CUTTING, NO_MASKING);
2594
2595       mask_mode = USE_MASKING;
2596     }
2597   }
2598
2599   DrawScreenElementExt(x, y, 0, 0, element, NO_CUTTING, mask_mode);
2600   DrawLevelFieldCrumbled(LEVELX(x), LEVELY(y));
2601 }
2602
2603 void DrawLevelElement(int x, int y, int element)
2604 {
2605   if (IN_LEV_FIELD(x, y) && IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
2606     DrawScreenElement(SCREENX(x), SCREENY(y), element);
2607 }
2608
2609 void DrawScreenField(int x, int y)
2610 {
2611   int lx = LEVELX(x), ly = LEVELY(y);
2612   int element, content;
2613
2614   if (!IN_LEV_FIELD(lx, ly))
2615   {
2616     if (lx < -1 || lx > lev_fieldx || ly < -1 || ly > lev_fieldy)
2617       element = EL_EMPTY;
2618     else
2619       element = getBorderElement(lx, ly);
2620
2621     DrawScreenElement(x, y, element);
2622
2623     return;
2624   }
2625
2626   element = Tile[lx][ly];
2627   content = Store[lx][ly];
2628
2629   if (IS_MOVING(lx, ly))
2630   {
2631     int horiz_move = (MovDir[lx][ly] == MV_LEFT || MovDir[lx][ly] == MV_RIGHT);
2632     boolean cut_mode = NO_CUTTING;
2633
2634     if (element == EL_QUICKSAND_EMPTYING ||
2635         element == EL_QUICKSAND_FAST_EMPTYING ||
2636         element == EL_MAGIC_WALL_EMPTYING ||
2637         element == EL_BD_MAGIC_WALL_EMPTYING ||
2638         element == EL_DC_MAGIC_WALL_EMPTYING ||
2639         element == EL_AMOEBA_DROPPING)
2640       cut_mode = CUT_ABOVE;
2641     else if (element == EL_QUICKSAND_FILLING ||
2642              element == EL_QUICKSAND_FAST_FILLING ||
2643              element == EL_MAGIC_WALL_FILLING ||
2644              element == EL_BD_MAGIC_WALL_FILLING ||
2645              element == EL_DC_MAGIC_WALL_FILLING)
2646       cut_mode = CUT_BELOW;
2647
2648     if (cut_mode == CUT_ABOVE)
2649       DrawScreenElement(x, y, element);
2650     else
2651       DrawScreenElement(x, y, EL_EMPTY);
2652
2653     if (cut_mode != CUT_BELOW && game.use_masked_elements)
2654     {
2655       int dir = MovDir[lx][ly];
2656       int newx = x + (dir == MV_LEFT ? -1 : dir == MV_RIGHT ? +1 : 0);
2657       int newy = y + (dir == MV_UP   ? -1 : dir == MV_DOWN  ? +1 : 0);
2658
2659       if (IN_SCR_FIELD(newx, newy))
2660         DrawScreenElement(newx, newy, EL_EMPTY);
2661     }
2662
2663     if (horiz_move)
2664       DrawScreenElementShifted(x, y, MovPos[lx][ly], 0, element, NO_CUTTING);
2665     else if (cut_mode == NO_CUTTING)
2666       DrawScreenElementShifted(x, y, 0, MovPos[lx][ly], element, cut_mode);
2667     else
2668     {
2669       DrawScreenElementShifted(x, y, 0, MovPos[lx][ly], content, cut_mode);
2670
2671       if (cut_mode == CUT_BELOW &&
2672           IN_LEV_FIELD(lx, ly + 1) && IN_SCR_FIELD(x, y + 1))
2673         DrawLevelElement(lx, ly + 1, element);
2674     }
2675
2676     if (content == EL_ACID)
2677     {
2678       int dir = MovDir[lx][ly];
2679       int newlx = lx + (dir == MV_LEFT ? -1 : dir == MV_RIGHT ? +1 : 0);
2680       int newly = ly + (dir == MV_UP   ? -1 : dir == MV_DOWN  ? +1 : 0);
2681
2682       DrawLevelElementThruMask(newlx, newly, EL_ACID);
2683
2684       // prevent target field from being drawn again (but without masking)
2685       // (this would happen if target field is scanned after moving element)
2686       Stop[newlx][newly] = TRUE;
2687     }
2688   }
2689   else if (IS_BLOCKED(lx, ly))
2690   {
2691     int oldx, oldy;
2692     int sx, sy;
2693     int horiz_move;
2694     boolean cut_mode = NO_CUTTING;
2695     int element_old, content_old;
2696
2697     Blocked2Moving(lx, ly, &oldx, &oldy);
2698     sx = SCREENX(oldx);
2699     sy = SCREENY(oldy);
2700     horiz_move = (MovDir[oldx][oldy] == MV_LEFT ||
2701                   MovDir[oldx][oldy] == MV_RIGHT);
2702
2703     element_old = Tile[oldx][oldy];
2704     content_old = Store[oldx][oldy];
2705
2706     if (element_old == EL_QUICKSAND_EMPTYING ||
2707         element_old == EL_QUICKSAND_FAST_EMPTYING ||
2708         element_old == EL_MAGIC_WALL_EMPTYING ||
2709         element_old == EL_BD_MAGIC_WALL_EMPTYING ||
2710         element_old == EL_DC_MAGIC_WALL_EMPTYING ||
2711         element_old == EL_AMOEBA_DROPPING)
2712       cut_mode = CUT_ABOVE;
2713
2714     DrawScreenElement(x, y, EL_EMPTY);
2715
2716     if (horiz_move)
2717       DrawScreenElementShifted(sx, sy, MovPos[oldx][oldy], 0, element_old,
2718                                NO_CUTTING);
2719     else if (cut_mode == NO_CUTTING)
2720       DrawScreenElementShifted(sx, sy, 0, MovPos[oldx][oldy], element_old,
2721                                cut_mode);
2722     else
2723       DrawScreenElementShifted(sx, sy, 0, MovPos[oldx][oldy], content_old,
2724                                cut_mode);
2725   }
2726   else if (IS_DRAWABLE(element))
2727     DrawScreenElement(x, y, element);
2728   else
2729     DrawScreenElement(x, y, EL_EMPTY);
2730 }
2731
2732 void DrawLevelField(int x, int y)
2733 {
2734   if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
2735     DrawScreenField(SCREENX(x), SCREENY(y));
2736   else if (IS_MOVING(x, y))
2737   {
2738     int newx, newy;
2739
2740     Moving2Blocked(x, y, &newx, &newy);
2741     if (IN_SCR_FIELD(SCREENX(newx), SCREENY(newy)))
2742       DrawScreenField(SCREENX(newx), SCREENY(newy));
2743   }
2744   else if (IS_BLOCKED(x, y))
2745   {
2746     int oldx, oldy;
2747
2748     Blocked2Moving(x, y, &oldx, &oldy);
2749     if (IN_SCR_FIELD(SCREENX(oldx), SCREENY(oldy)))
2750       DrawScreenField(SCREENX(oldx), SCREENY(oldy));
2751   }
2752 }
2753
2754 static void DrawSizedWallExt_MM(int dst_x, int dst_y, int element, int tilesize,
2755                                 int (*el2img_function)(int), boolean masked,
2756                                 int element_bits_draw)
2757 {
2758   int element_base = map_mm_wall_element(element);
2759   int element_bits = (IS_DF_WALL(element) ?
2760                       element - EL_DF_WALL_START :
2761                       IS_MM_WALL(element) ?
2762                       element - EL_MM_WALL_START : EL_EMPTY) & 0x000f;
2763   int graphic = el2img_function(element_base);
2764   int tilesize_draw = tilesize / 2;
2765   Bitmap *src_bitmap;
2766   int src_x, src_y;
2767   int i;
2768
2769   getSizedGraphicSource(graphic, 0, tilesize_draw, &src_bitmap, &src_x, &src_y);
2770
2771   for (i = 0; i < 4; i++)
2772   {
2773     int dst_draw_x = dst_x + (i % 2) * tilesize_draw;
2774     int dst_draw_y = dst_y + (i / 2) * tilesize_draw;
2775
2776     if (!(element_bits_draw & (1 << i)))
2777       continue;
2778
2779     if (element_bits & (1 << i))
2780     {
2781       if (masked)
2782         BlitBitmapMasked(src_bitmap, drawto, src_x, src_y,
2783                          tilesize_draw, tilesize_draw, dst_draw_x, dst_draw_y);
2784       else
2785         BlitBitmap(src_bitmap, drawto, src_x, src_y,
2786                    tilesize_draw, tilesize_draw, dst_draw_x, dst_draw_y);
2787     }
2788     else
2789     {
2790       if (!masked)
2791         ClearRectangle(drawto, dst_draw_x, dst_draw_y,
2792                        tilesize_draw, tilesize_draw);
2793     }
2794   }
2795 }
2796
2797 void DrawSizedWallParts_MM(int x, int y, int element, int tilesize,
2798                            boolean masked, int element_bits_draw)
2799 {
2800   DrawSizedWallExt_MM(SX + x * tilesize, SY + y * tilesize,
2801                       element, tilesize, el2edimg, masked, element_bits_draw);
2802 }
2803
2804 static void DrawSizedWall_MM(int dst_x, int dst_y, int element, int tilesize,
2805                              int (*el2img_function)(int))
2806 {
2807   DrawSizedWallExt_MM(dst_x, dst_y, element, tilesize, el2img_function, FALSE,
2808                       0x000f);
2809 }
2810
2811 static void DrawSizedElementExt(int x, int y, int element, int tilesize,
2812                                 boolean masked)
2813 {
2814   if (IS_MM_WALL(element))
2815   {
2816     DrawSizedWallExt_MM(SX + x * tilesize, SY + y * tilesize,
2817                         element, tilesize, el2edimg, masked, 0x000f);
2818   }
2819   else
2820   {
2821     int graphic = el2edimg(element);
2822
2823     if (masked)
2824       DrawSizedGraphicThruMask(x, y, graphic, 0, tilesize);
2825     else
2826       DrawSizedGraphic(x, y, graphic, 0, tilesize);
2827   }
2828 }
2829
2830 void DrawSizedElement(int x, int y, int element, int tilesize)
2831 {
2832   DrawSizedElementExt(x, y, element, tilesize, FALSE);
2833 }
2834
2835 void DrawSizedElementThruMask(int x, int y, int element, int tilesize)
2836 {
2837   DrawSizedElementExt(x, y, element, tilesize, TRUE);
2838 }
2839
2840 void DrawMiniElement(int x, int y, int element)
2841 {
2842   int graphic;
2843
2844   graphic = el2edimg(element);
2845   DrawMiniGraphic(x, y, graphic);
2846 }
2847
2848 void DrawSizedElementOrWall(int sx, int sy, int scroll_x, int scroll_y,
2849                             int tilesize)
2850 {
2851   int x = sx + scroll_x, y = sy + scroll_y;
2852
2853   if (x < -1 || x > lev_fieldx || y < -1 || y > lev_fieldy)
2854     DrawSizedElement(sx, sy, EL_EMPTY, tilesize);
2855   else if (x > -1 && x < lev_fieldx && y > -1 && y < lev_fieldy)
2856     DrawSizedElement(sx, sy, Tile[x][y], tilesize);
2857   else
2858     DrawSizedGraphic(sx, sy, el2edimg(getBorderElement(x, y)), 0, tilesize);
2859 }
2860
2861 void DrawMiniElementOrWall(int sx, int sy, int scroll_x, int scroll_y)
2862 {
2863   int x = sx + scroll_x, y = sy + scroll_y;
2864
2865   if (x < -1 || x > lev_fieldx || y < -1 || y > lev_fieldy)
2866     DrawMiniElement(sx, sy, EL_EMPTY);
2867   else if (x > -1 && x < lev_fieldx && y > -1 && y < lev_fieldy)
2868     DrawMiniElement(sx, sy, Tile[x][y]);
2869   else
2870     DrawMiniGraphic(sx, sy, el2edimg(getBorderElement(x, y)));
2871 }
2872
2873 static void DrawEnvelopeBackgroundTiles(int graphic, int startx, int starty,
2874                                         int x, int y, int xsize, int ysize,
2875                                         int tile_width, int tile_height)
2876 {
2877   Bitmap *src_bitmap;
2878   int src_x, src_y;
2879   int dst_x = startx + x * tile_width;
2880   int dst_y = starty + y * tile_height;
2881   int width  = graphic_info[graphic].width;
2882   int height = graphic_info[graphic].height;
2883   int inner_width_raw  = MAX(width  - 2 * tile_width,  tile_width);
2884   int inner_height_raw = MAX(height - 2 * tile_height, tile_height);
2885   int inner_width  = inner_width_raw  - (inner_width_raw  % tile_width);
2886   int inner_height = inner_height_raw - (inner_height_raw % tile_height);
2887   int inner_sx = (width  >= 3 * tile_width  ? tile_width  : 0);
2888   int inner_sy = (height >= 3 * tile_height ? tile_height : 0);
2889   boolean draw_masked = graphic_info[graphic].draw_masked;
2890
2891   getFixedGraphicSource(graphic, 0, &src_bitmap, &src_x, &src_y);
2892
2893   if (src_bitmap == NULL || width < tile_width || height < tile_height)
2894   {
2895     ClearRectangle(drawto, dst_x, dst_y, tile_width, tile_height);
2896     return;
2897   }
2898
2899   src_x += (x == 0 ? 0 : x == xsize - 1 ? width  - tile_width  :
2900             inner_sx + (x - 1) * tile_width  % inner_width);
2901   src_y += (y == 0 ? 0 : y == ysize - 1 ? height - tile_height :
2902             inner_sy + (y - 1) * tile_height % inner_height);
2903
2904   if (draw_masked)
2905     BlitBitmapMasked(src_bitmap, drawto, src_x, src_y, tile_width, tile_height,
2906                      dst_x, dst_y);
2907   else
2908     BlitBitmap(src_bitmap, drawto, src_x, src_y, tile_width, tile_height,
2909                dst_x, dst_y);
2910 }
2911
2912 static void DrawEnvelopeBackground(int graphic, int startx, int starty,
2913                                    int x, int y, int xsize, int ysize,
2914                                    int font_nr)
2915 {
2916   int font_width  = getFontWidth(font_nr);
2917   int font_height = getFontHeight(font_nr);
2918
2919   DrawEnvelopeBackgroundTiles(graphic, startx, starty, x, y, xsize, ysize,
2920                               font_width, font_height);
2921 }
2922
2923 static void AnimateEnvelope(int envelope_nr, int anim_mode, int action)
2924 {
2925   int graphic = IMG_BACKGROUND_ENVELOPE_1 + envelope_nr;
2926   Bitmap *src_bitmap = graphic_info[graphic].bitmap;
2927   int mask_mode = (src_bitmap != NULL ? BLIT_MASKED : BLIT_ON_BACKGROUND);
2928   boolean ffwd_delay = (tape.playing && tape.fast_forward);
2929   boolean no_delay = (tape.warp_forward);
2930   int frame_delay_value = (ffwd_delay ? FfwdFrameDelay : GameFrameDelay);
2931   int anim_delay_value = MAX(1, (no_delay ? 0 : frame_delay_value) / 2);
2932   DelayCounter anim_delay = { anim_delay_value };
2933   int font_nr = FONT_ENVELOPE_1 + envelope_nr;
2934   int font_width = getFontWidth(font_nr);
2935   int font_height = getFontHeight(font_nr);
2936   int max_xsize = level.envelope[envelope_nr].xsize;
2937   int max_ysize = level.envelope[envelope_nr].ysize;
2938   int xstart = (anim_mode & ANIM_VERTICAL ? max_xsize : 0);
2939   int ystart = (anim_mode & ANIM_HORIZONTAL ? max_ysize : 0);
2940   int xend = max_xsize;
2941   int yend = (anim_mode != ANIM_DEFAULT ? max_ysize : 0);
2942   int xstep = (xstart < xend ? 1 : 0);
2943   int ystep = (ystart < yend || xstep == 0 ? 1 : 0);
2944   int start = 0;
2945   int end = MAX(xend - xstart, yend - ystart);
2946   int i;
2947
2948   for (i = start; i <= end; i++)
2949   {
2950     int last_frame = end;       // last frame of this "for" loop
2951     int x = xstart + i * xstep;
2952     int y = ystart + i * ystep;
2953     int xsize = (action == ACTION_CLOSING ? xend - (x - xstart) : x) + 2;
2954     int ysize = (action == ACTION_CLOSING ? yend - (y - ystart) : y) + 2;
2955     int sx = SX + (SXSIZE - xsize * font_width)  / 2;
2956     int sy = SY + (SYSIZE - ysize * font_height) / 2;
2957     int xx, yy;
2958
2959     SetDrawtoField(DRAW_TO_FIELDBUFFER);
2960
2961     BlitScreenToBitmap(backbuffer);
2962
2963     SetDrawtoField(DRAW_TO_BACKBUFFER);
2964
2965     for (yy = 0; yy < ysize; yy++)
2966       for (xx = 0; xx < xsize; xx++)
2967         DrawEnvelopeBackground(graphic, sx, sy, xx, yy, xsize, ysize, font_nr);
2968
2969     DrawTextArea(sx + font_width, sy + font_height,
2970                  level.envelope[envelope_nr].text, font_nr, max_xsize,
2971                  xsize - 2, ysize - 2, 0, mask_mode,
2972                  level.envelope[envelope_nr].autowrap,
2973                  level.envelope[envelope_nr].centered, FALSE);
2974
2975     redraw_mask |= REDRAW_FIELD;
2976     BackToFront();
2977
2978     SkipUntilDelayReached(&anim_delay, &i, last_frame);
2979   }
2980
2981   ClearAutoRepeatKeyEvents();
2982 }
2983
2984 void ShowEnvelope(int envelope_nr)
2985 {
2986   int element = EL_ENVELOPE_1 + envelope_nr;
2987   int graphic = IMG_BACKGROUND_ENVELOPE_1 + envelope_nr;
2988   int sound_opening = element_info[element].sound[ACTION_OPENING];
2989   int sound_closing = element_info[element].sound[ACTION_CLOSING];
2990   boolean ffwd_delay = (tape.playing && tape.fast_forward);
2991   boolean no_delay = (tape.warp_forward);
2992   int normal_delay_value = ONE_SECOND_DELAY / (ffwd_delay ? 2 : 1);
2993   int wait_delay_value = (no_delay ? 0 : normal_delay_value);
2994   int anim_mode = graphic_info[graphic].anim_mode;
2995   int main_anim_mode = (anim_mode == ANIM_NONE ? ANIM_VERTICAL|ANIM_HORIZONTAL:
2996                         anim_mode == ANIM_DEFAULT ? ANIM_VERTICAL : anim_mode);
2997   boolean overlay_enabled = GetOverlayEnabled();
2998
2999   game.envelope_active = TRUE;  // needed for RedrawPlayfield() events
3000
3001   SetOverlayEnabled(FALSE);
3002   UnmapAllGadgets();
3003
3004   PlayMenuSoundStereo(sound_opening, SOUND_MIDDLE);
3005
3006   if (anim_mode == ANIM_DEFAULT)
3007     AnimateEnvelope(envelope_nr, ANIM_DEFAULT, ACTION_OPENING);
3008
3009   AnimateEnvelope(envelope_nr, main_anim_mode, ACTION_OPENING);
3010
3011   if (tape.playing)
3012     Delay_WithScreenUpdates(wait_delay_value);
3013   else
3014     WaitForEventToContinue();
3015
3016   RemapAllGadgets();
3017   SetOverlayEnabled(overlay_enabled);
3018
3019   PlayMenuSoundStereo(sound_closing, SOUND_MIDDLE);
3020
3021   if (anim_mode != ANIM_NONE)
3022     AnimateEnvelope(envelope_nr, main_anim_mode, ACTION_CLOSING);
3023
3024   if (anim_mode == ANIM_DEFAULT)
3025     AnimateEnvelope(envelope_nr, ANIM_DEFAULT, ACTION_CLOSING);
3026
3027   game.envelope_active = FALSE;
3028
3029   SetDrawtoField(DRAW_TO_FIELDBUFFER);
3030
3031   redraw_mask |= REDRAW_FIELD;
3032   BackToFront();
3033 }
3034
3035 static void PrepareEnvelopeRequestToScreen(Bitmap *bitmap, int sx, int sy,
3036                                            int xsize, int ysize)
3037 {
3038   if (!global.use_envelope_request)
3039     return;
3040
3041   if (request.bitmap == NULL ||
3042       xsize > request.xsize ||
3043       ysize > request.ysize)
3044   {
3045     if (request.bitmap != NULL)
3046       FreeBitmap(request.bitmap);
3047
3048     request.bitmap = CreateBitmap(xsize, ysize, DEFAULT_DEPTH);
3049
3050     SDL_Surface *surface = request.bitmap->surface;
3051
3052     if ((request.bitmap->surface_masked = SDLGetNativeSurface(surface)) == NULL)
3053       Fail("SDLGetNativeSurface() failed");
3054   }
3055
3056   BlitBitmap(bitmap, request.bitmap, sx, sy, xsize, ysize, 0, 0);
3057
3058   // create masked surface for request bitmap, if needed
3059   if (graphic_info[IMG_BACKGROUND_REQUEST].draw_masked)
3060   {
3061     SDL_Surface *surface        = request.bitmap->surface;
3062     SDL_Surface *surface_masked = request.bitmap->surface_masked;
3063
3064     SDLBlitSurface(surface, surface_masked, 0, 0, xsize, ysize, 0, 0);
3065     SDL_SetColorKey(surface_masked, SET_TRANSPARENT_PIXEL,
3066                     SDL_MapRGB(surface_masked->format, 0x00, 0x00, 0x00));
3067   }
3068
3069   SDLFreeBitmapTextures(request.bitmap);
3070   SDLCreateBitmapTextures(request.bitmap);
3071
3072   ResetBitmapAlpha(request.bitmap);
3073
3074   // set envelope request run-time values
3075   request.sx = sx;
3076   request.sy = sy;
3077   request.xsize = xsize;
3078   request.ysize = ysize;
3079 }
3080
3081 void DrawEnvelopeRequestToScreen(int drawing_target)
3082 {
3083   if (global.use_envelope_request &&
3084       game.request_active &&
3085       drawing_target == DRAW_TO_SCREEN)
3086   {
3087     struct GraphicInfo *g = &graphic_info[IMG_BACKGROUND_REQUEST];
3088
3089     SetBitmapAlphaNextBlit(request.bitmap, g->alpha);
3090
3091     if (g->draw_masked)
3092       BlitToScreenMasked(request.bitmap, 0, 0, request.xsize, request.ysize,
3093                          request.sx, request.sy);
3094     else
3095       BlitToScreen(request.bitmap, 0, 0, request.xsize, request.ysize,
3096                    request.sx, request.sy);
3097   }
3098 }
3099
3100 static void setRequestBasePosition(int *x, int *y)
3101 {
3102   int sx_base, sy_base;
3103
3104   if (request.x != -1)
3105     sx_base = request.x;
3106   else if (request.align == ALIGN_LEFT)
3107     sx_base = SX;
3108   else if (request.align == ALIGN_RIGHT)
3109     sx_base = SX + SXSIZE;
3110   else
3111     sx_base = SX + SXSIZE / 2;
3112
3113   if (request.y != -1)
3114     sy_base = request.y;
3115   else if (request.valign == VALIGN_TOP)
3116     sy_base = SY;
3117   else if (request.valign == VALIGN_BOTTOM)
3118     sy_base = SY + SYSIZE;
3119   else
3120     sy_base = SY + SYSIZE / 2;
3121
3122   *x = sx_base;
3123   *y = sy_base;
3124 }
3125
3126 static void setRequestPositionExt(int *x, int *y, int width, int height,
3127                                   boolean add_border_size)
3128 {
3129   int border_size = request.border_size;
3130   int sx_base, sy_base;
3131   int sx, sy;
3132
3133   setRequestBasePosition(&sx_base, &sy_base);
3134
3135   if (request.align == ALIGN_LEFT)
3136     sx = sx_base;
3137   else if (request.align == ALIGN_RIGHT)
3138     sx = sx_base - width;
3139   else
3140     sx = sx_base - width  / 2;
3141
3142   if (request.valign == VALIGN_TOP)
3143     sy = sy_base;
3144   else if (request.valign == VALIGN_BOTTOM)
3145     sy = sy_base - height;
3146   else
3147     sy = sy_base - height / 2;
3148
3149   sx = MAX(0, MIN(sx, WIN_XSIZE - width));
3150   sy = MAX(0, MIN(sy, WIN_YSIZE - height));
3151
3152   if (add_border_size)
3153   {
3154     sx += border_size;
3155     sy += border_size;
3156   }
3157
3158   *x = sx;
3159   *y = sy;
3160 }
3161
3162 static void setRequestPosition(int *x, int *y, boolean add_border_size)
3163 {
3164   setRequestPositionExt(x, y, request.width, request.height, add_border_size);
3165 }
3166
3167 static void DrawEnvelopeRequestText(int sx, int sy, char *text)
3168 {
3169   char *text_final = text;
3170   char *text_door_style = NULL;
3171   int graphic = IMG_BACKGROUND_REQUEST;
3172   Bitmap *src_bitmap = graphic_info[graphic].bitmap;
3173   int mask_mode = (src_bitmap != NULL ? BLIT_MASKED : BLIT_ON_BACKGROUND);
3174   int font_nr = FONT_REQUEST;
3175   int font_width = getFontWidth(font_nr);
3176   int font_height = getFontHeight(font_nr);
3177   int border_size = request.border_size;
3178   int line_spacing = request.line_spacing;
3179   int line_height = font_height + line_spacing;
3180   int max_text_width  = request.width  - 2 * border_size;
3181   int max_text_height = request.height - 2 * border_size;
3182   int line_length = max_text_width  / font_width;
3183   int max_lines   = max_text_height / line_height;
3184   int text_width = line_length * font_width;
3185   int sx_offset = border_size;
3186   int sy_offset = border_size;
3187
3188   // force DOOR font inside door area
3189   SetFontStatus(GAME_MODE_PSEUDO_DOOR);
3190
3191   if (request.centered)
3192     sx_offset = (request.width - text_width) / 2;
3193
3194   if (request.wrap_single_words && !request.autowrap)
3195   {
3196     char *src_text_ptr, *dst_text_ptr;
3197
3198     if (maxWordLengthInRequestString(text) > line_length)
3199     {
3200       font_nr = FONT_REQUEST_NARROW;
3201       font_width = getFontWidth(font_nr);
3202       line_length = max_text_width  / font_width;
3203     }
3204
3205     text_door_style = checked_malloc(2 * strlen(text) + 1);
3206
3207     src_text_ptr = text;
3208     dst_text_ptr = text_door_style;
3209
3210     while (*src_text_ptr)
3211     {
3212       if (*src_text_ptr == ' ' ||
3213           *src_text_ptr == '?' ||
3214           *src_text_ptr == '!')
3215         *dst_text_ptr++ = '\n';
3216
3217       if (*src_text_ptr != ' ')
3218         *dst_text_ptr++ = *src_text_ptr;
3219
3220       src_text_ptr++;
3221     }
3222
3223     *dst_text_ptr = '\0';
3224
3225     text_final = text_door_style;
3226   }
3227
3228   DrawTextBuffer(sx + sx_offset, sy + sy_offset, text_final, font_nr,
3229                  line_length, -1, max_lines, line_spacing, mask_mode,
3230                  request.autowrap, request.centered, FALSE);
3231
3232   if (text_door_style)
3233     free(text_door_style);
3234
3235   ResetFontStatus();
3236 }
3237
3238 static void DrawEnvelopeRequest(char *text, unsigned int req_state)
3239 {
3240   DrawBuffer *drawto_last = drawto;
3241   int graphic = IMG_BACKGROUND_REQUEST;
3242   int width = request.width;
3243   int height = request.height;
3244   int tile_size = MAX(request.step_offset, 1);
3245   int x_steps = width  / tile_size;
3246   int y_steps = height / tile_size;
3247   int sx, sy;
3248   int x, y;
3249
3250   setRequestPosition(&sx, &sy, FALSE);
3251
3252   // draw complete envelope request to temporary bitmap
3253   drawto = bitmap_db_store_1;
3254
3255   ClearRectangle(drawto, sx, sy, width, height);
3256
3257   for (y = 0; y < y_steps; y++)
3258     for (x = 0; x < x_steps; x++)
3259       DrawEnvelopeBackgroundTiles(graphic, sx, sy,
3260                                   x, y, x_steps, y_steps,
3261                                   tile_size, tile_size);
3262
3263   // write text for request
3264   DrawEnvelopeRequestText(sx, sy, text);
3265
3266   MapToolButtons(req_state);
3267
3268   // restore pointer to drawing buffer
3269   drawto = drawto_last;
3270
3271   // prepare complete envelope request from temporary bitmap
3272   PrepareEnvelopeRequestToScreen(bitmap_db_store_1, sx, sy, width, height);
3273 }
3274
3275 static void AnimateEnvelopeRequest(int anim_mode, int action)
3276 {
3277   boolean game_ended = (game_status == GAME_MODE_PLAYING && checkGameEnded());
3278   int delay_value_normal = request.step_delay;
3279   int delay_value_fast = delay_value_normal / 2;
3280   boolean ffwd_delay = (tape.playing && tape.fast_forward);
3281   boolean no_delay = (tape.warp_forward);
3282   int delay_value = (ffwd_delay ? delay_value_fast : delay_value_normal);
3283   int anim_delay_value = MAX(1, (no_delay ? 0 : delay_value) / 2);
3284   DelayCounter anim_delay = { anim_delay_value };
3285
3286   int tile_size = MAX(request.step_offset, 1);
3287   int max_xsize = request.width  / tile_size;
3288   int max_ysize = request.height / tile_size;
3289   int max_xsize_inner = max_xsize - 2;
3290   int max_ysize_inner = max_ysize - 2;
3291
3292   int xstart = (anim_mode & ANIM_VERTICAL ? max_xsize_inner : 0);
3293   int ystart = (anim_mode & ANIM_HORIZONTAL ? max_ysize_inner : 0);
3294   int xend = max_xsize_inner;
3295   int yend = (anim_mode != ANIM_DEFAULT ? max_ysize_inner : 0);
3296   int xstep = (xstart < xend ? 1 : 0);
3297   int ystep = (ystart < yend || xstep == 0 ? 1 : 0);
3298   int start = 0;
3299   int end = MAX(xend - xstart, yend - ystart);
3300   int i;
3301
3302   if (setup.quick_doors)
3303   {
3304     xstart = xend;
3305     ystart = yend;
3306     end = 0;
3307   }
3308
3309   for (i = start; i <= end; i++)
3310   {
3311     int last_frame = end;       // last frame of this "for" loop
3312     int x = xstart + i * xstep;
3313     int y = ystart + i * ystep;
3314     int xsize = (action == ACTION_CLOSING ? xend - (x - xstart) : x) + 2;
3315     int ysize = (action == ACTION_CLOSING ? yend - (y - ystart) : y) + 2;
3316     int xsize_size_left = (xsize - 1) * tile_size;
3317     int ysize_size_top  = (ysize - 1) * tile_size;
3318     int max_xsize_pos = (max_xsize - 1) * tile_size;
3319     int max_ysize_pos = (max_ysize - 1) * tile_size;
3320     int width  = xsize * tile_size;
3321     int height = ysize * tile_size;
3322     int src_x, src_y;
3323     int dst_x, dst_y;
3324     int xx, yy;
3325
3326     if (game_ended)
3327       HandleGameActions();
3328
3329     setRequestPosition(&src_x, &src_y, FALSE);
3330     setRequestPositionExt(&dst_x, &dst_y, width, height, FALSE);
3331
3332     for (yy = 0; yy < 2; yy++)
3333     {
3334       for (xx = 0; xx < 2; xx++)
3335       {
3336         int src_xx = src_x + xx * max_xsize_pos;
3337         int src_yy = src_y + yy * max_ysize_pos;
3338         int dst_xx = dst_x + xx * xsize_size_left;
3339         int dst_yy = dst_y + yy * ysize_size_top;
3340         int xx_size = (xx ? tile_size : xsize_size_left);
3341         int yy_size = (yy ? tile_size : ysize_size_top);
3342
3343         // draw partial (animated) envelope request to temporary bitmap
3344         BlitBitmap(bitmap_db_store_1, bitmap_db_store_2,
3345                    src_xx, src_yy, xx_size, yy_size, dst_xx, dst_yy);
3346       }
3347     }
3348
3349     // prepare partial (animated) envelope request from temporary bitmap
3350     PrepareEnvelopeRequestToScreen(bitmap_db_store_2, dst_x, dst_y,
3351                                    width, height);
3352
3353     redraw_mask |= REDRAW_FIELD;
3354
3355     BackToFront();
3356
3357     SkipUntilDelayReached(&anim_delay, &i, last_frame);
3358   }
3359
3360   ClearAutoRepeatKeyEvents();
3361 }
3362
3363 static void ShowEnvelopeRequest(char *text, unsigned int req_state, int action)
3364 {
3365   int graphic = IMG_BACKGROUND_REQUEST;
3366   int sound_opening = SND_REQUEST_OPENING;
3367   int sound_closing = SND_REQUEST_CLOSING;
3368   int anim_mode_1 = request.anim_mode;                  // (higher priority)
3369   int anim_mode_2 = graphic_info[graphic].anim_mode;    // (lower priority)
3370   int anim_mode = (anim_mode_1 != ANIM_DEFAULT ? anim_mode_1 : anim_mode_2);
3371   int main_anim_mode = (anim_mode == ANIM_NONE ? ANIM_VERTICAL|ANIM_HORIZONTAL:
3372                         anim_mode == ANIM_DEFAULT ? ANIM_VERTICAL : anim_mode);
3373
3374   game.envelope_active = TRUE;  // needed for RedrawPlayfield() events
3375
3376   if (action == ACTION_OPENING)
3377   {
3378     PlayMenuSoundStereo(sound_opening, SOUND_MIDDLE);
3379
3380     if (anim_mode == ANIM_DEFAULT)
3381       AnimateEnvelopeRequest(ANIM_DEFAULT, ACTION_OPENING);
3382
3383     AnimateEnvelopeRequest(main_anim_mode, ACTION_OPENING);
3384   }
3385   else
3386   {
3387     PlayMenuSoundStereo(sound_closing, SOUND_MIDDLE);
3388
3389     if (anim_mode != ANIM_NONE)
3390       AnimateEnvelopeRequest(main_anim_mode, ACTION_CLOSING);
3391
3392     if (anim_mode == ANIM_DEFAULT)
3393       AnimateEnvelopeRequest(ANIM_DEFAULT, ACTION_CLOSING);
3394   }
3395
3396   game.envelope_active = FALSE;
3397 }
3398
3399 static Bitmap *GetPreviewTileBitmap(Bitmap *bitmap)
3400 {
3401   if (level.game_engine_type == GAME_ENGINE_TYPE_BD)
3402     return GetPreviewTileBitmap_BD(bitmap);
3403
3404   return bitmap;
3405 }
3406
3407 static void DrawPreviewElement(int dst_x, int dst_y, int element, int tilesize)
3408 {
3409   if (IS_MM_WALL(element))
3410   {
3411     DrawSizedWall_MM(dst_x, dst_y, element, tilesize, el2preimg);
3412   }
3413   else
3414   {
3415     Bitmap *src_bitmap;
3416     int src_x, src_y;
3417     int graphic = el2preimg(element);
3418
3419     getSizedGraphicSource(graphic, 0, tilesize, &src_bitmap, &src_x, &src_y);
3420
3421     // for BD style levels, maybe use bitmap with level-specific colors
3422     src_bitmap = GetPreviewTileBitmap(src_bitmap);
3423
3424     BlitBitmap(src_bitmap, drawto, src_x, src_y, tilesize, tilesize,
3425                dst_x, dst_y);
3426   }
3427 }
3428
3429 void DrawLevel(int draw_background_mask)
3430 {
3431   int x, y;
3432
3433   SetMainBackgroundImage(IMG_BACKGROUND_PLAYING);
3434   SetDrawBackgroundMask(draw_background_mask);
3435
3436   ClearField();
3437
3438   for (x = BX1; x <= BX2; x++)
3439     for (y = BY1; y <= BY2; y++)
3440       DrawScreenField(x, y);
3441
3442   redraw_mask |= REDRAW_FIELD;
3443 }
3444
3445 void DrawSizedLevel(int size_x, int size_y, int scroll_x, int scroll_y,
3446                     int tilesize)
3447 {
3448   int x, y;
3449
3450   for (x = 0; x < size_x; x++)
3451     for (y = 0; y < size_y; y++)
3452       DrawSizedElementOrWall(x, y, scroll_x, scroll_y, tilesize);
3453
3454   redraw_mask |= REDRAW_FIELD;
3455 }
3456
3457 void DrawMiniLevel(int size_x, int size_y, int scroll_x, int scroll_y)
3458 {
3459   int x, y;
3460
3461   for (x = 0; x < size_x; x++)
3462     for (y = 0; y < size_y; y++)
3463       DrawMiniElementOrWall(x, y, scroll_x, scroll_y);
3464
3465   redraw_mask |= REDRAW_FIELD;
3466 }
3467
3468 static int getPreviewLevelWidth(void)
3469 {
3470   if (level.game_engine_type == GAME_ENGINE_TYPE_BD)
3471     return (level.native_bd_level->cave->x2 - level.native_bd_level->cave->x1 + 1);
3472
3473   return lev_fieldx;
3474 }
3475
3476 static int getPreviewLevelHeight(void)
3477 {
3478   if (level.game_engine_type == GAME_ENGINE_TYPE_BD)
3479     return (level.native_bd_level->cave->y2 - level.native_bd_level->cave->y1 + 1);
3480
3481   return lev_fieldy;
3482 }
3483
3484 static void DrawPreviewLevelPlayfield(int from_x, int from_y)
3485 {
3486   boolean show_level_border = (BorderElement != EL_EMPTY);
3487   int level_xsize = getPreviewLevelWidth()  + (show_level_border ? 2 : 0);
3488   int level_ysize = getPreviewLevelHeight() + (show_level_border ? 2 : 0);
3489   int tile_size = preview.tile_size;
3490   int preview_width  = preview.xsize * tile_size;
3491   int preview_height = preview.ysize * tile_size;
3492   int real_preview_xsize = MIN(level_xsize, preview.xsize);
3493   int real_preview_ysize = MIN(level_ysize, preview.ysize);
3494   int real_preview_width  = real_preview_xsize * tile_size;
3495   int real_preview_height = real_preview_ysize * tile_size;
3496   int dst_x = SX + ALIGNED_XPOS(preview.x, preview_width, preview.align);
3497   int dst_y = SY + ALIGNED_YPOS(preview.y, preview_height, preview.valign);
3498   int x, y;
3499
3500   if (!IN_GFX_FIELD_FULL(dst_x, dst_y + preview_height - 1))
3501     return;
3502
3503   DrawBackground(dst_x, dst_y, preview_width, preview_height);
3504
3505   dst_x += (preview_width  - real_preview_width)  / 2;
3506   dst_y += (preview_height - real_preview_height) / 2;
3507
3508   for (x = 0; x < real_preview_xsize; x++)
3509   {
3510     for (y = 0; y < real_preview_ysize; y++)
3511     {
3512       int lx = from_x + x + (show_level_border ? -1 : 0);
3513       int ly = from_y + y + (show_level_border ? -1 : 0);
3514       int element = (IN_LEV_FIELD(lx, ly) ? level.field[lx][ly] :
3515                      getBorderElement(lx, ly));
3516
3517       DrawPreviewElement(dst_x + x * tile_size, dst_y + y * tile_size,
3518                          element, tile_size);
3519     }
3520   }
3521
3522   redraw_mask |= REDRAW_FIELD;
3523 }
3524
3525 #define MICROLABEL_EMPTY                0
3526 #define MICROLABEL_LEVEL_NAME           1
3527 #define MICROLABEL_LEVEL_AUTHOR_HEAD    2
3528 #define MICROLABEL_LEVEL_AUTHOR         3
3529 #define MICROLABEL_IMPORTED_FROM_HEAD   4
3530 #define MICROLABEL_IMPORTED_FROM        5
3531 #define MICROLABEL_IMPORTED_BY_HEAD     6
3532 #define MICROLABEL_IMPORTED_BY          7
3533
3534 static int getMaxTextLength(struct TextPosInfo *pos, int font_nr)
3535 {
3536   int max_text_width = SXSIZE;
3537   int font_width = getFontWidth(font_nr);
3538
3539   if (pos->align == ALIGN_CENTER)
3540     max_text_width = (pos->x < SXSIZE / 2 ? pos->x * 2 : (SXSIZE - pos->x) * 2);
3541   else if (pos->align == ALIGN_RIGHT)
3542     max_text_width = pos->x;
3543   else
3544     max_text_width = SXSIZE - pos->x;
3545
3546   return max_text_width / font_width;
3547 }
3548
3549 static void DrawPreviewLevelLabelExt(int mode, struct TextPosInfo *pos)
3550 {
3551   char label_text[MAX_OUTPUT_LINESIZE + 1];
3552   int max_len_label_text;
3553   int font_nr = pos->font;
3554   int i;
3555
3556   if (!IN_GFX_FIELD_FULL(pos->x, pos->y + getFontHeight(pos->font)))
3557     return;
3558
3559   if (mode == MICROLABEL_LEVEL_AUTHOR_HEAD ||
3560       mode == MICROLABEL_IMPORTED_FROM_HEAD ||
3561       mode == MICROLABEL_IMPORTED_BY_HEAD)
3562     font_nr = pos->font_alt;
3563
3564   max_len_label_text = getMaxTextLength(pos, font_nr);
3565
3566   if (pos->size != -1)
3567     max_len_label_text = pos->size;
3568
3569   for (i = 0; i < max_len_label_text; i++)
3570     label_text[i] = ' ';
3571   label_text[max_len_label_text] = '\0';
3572
3573   if (strlen(label_text) > 0)
3574     DrawTextSAligned(pos->x, pos->y, label_text, font_nr, pos->align);
3575
3576   strncpy(label_text,
3577           (mode == MICROLABEL_LEVEL_NAME ? level.name :
3578            mode == MICROLABEL_LEVEL_AUTHOR_HEAD ? "created by" :
3579            mode == MICROLABEL_LEVEL_AUTHOR ? level.author :
3580            mode == MICROLABEL_IMPORTED_FROM_HEAD ? "imported from" :
3581            mode == MICROLABEL_IMPORTED_FROM ? leveldir_current->imported_from :
3582            mode == MICROLABEL_IMPORTED_BY_HEAD ? "imported by" :
3583            mode == MICROLABEL_IMPORTED_BY ? leveldir_current->imported_by :""),
3584           max_len_label_text);
3585   label_text[max_len_label_text] = '\0';
3586
3587   if (strlen(label_text) > 0)
3588     DrawTextSAligned(pos->x, pos->y, label_text, font_nr, pos->align);
3589
3590   redraw_mask |= REDRAW_FIELD;
3591 }
3592
3593 static void DrawPreviewLevelLabel(int mode)
3594 {
3595   DrawPreviewLevelLabelExt(mode, &menu.main.text.level_info_2);
3596 }
3597
3598 static void DrawPreviewLevelInfo(int mode)
3599 {
3600   if (mode == MICROLABEL_LEVEL_NAME)
3601     DrawPreviewLevelLabelExt(mode, &menu.main.text.level_name);
3602   else if (mode == MICROLABEL_LEVEL_AUTHOR)
3603     DrawPreviewLevelLabelExt(mode, &menu.main.text.level_author);
3604 }
3605
3606 static void DrawPreviewLevelExt(boolean restart)
3607 {
3608   static DelayCounter scroll_delay = { 0 };
3609   static DelayCounter label_delay = { 0 };
3610   static int from_x, from_y, scroll_direction;
3611   static int label_state, label_counter;
3612   boolean show_level_border = (BorderElement != EL_EMPTY);
3613   int level_xsize = lev_fieldx + (show_level_border ? 2 : 0);
3614   int level_ysize = lev_fieldy + (show_level_border ? 2 : 0);
3615
3616   scroll_delay.value = preview.step_delay;
3617   label_delay.value = MICROLEVEL_LABEL_DELAY;
3618
3619   if (restart)
3620   {
3621     from_x = 0;
3622     from_y = 0;
3623
3624     if (preview.anim_mode == ANIM_CENTERED)
3625     {
3626       if (level_xsize > preview.xsize)
3627         from_x = (level_xsize - preview.xsize) / 2;
3628       if (level_ysize > preview.ysize)
3629         from_y = (level_ysize - preview.ysize) / 2;
3630     }
3631
3632     from_x += preview.xoffset;
3633     from_y += preview.yoffset;
3634
3635     scroll_direction = MV_RIGHT;
3636     label_state = 1;
3637     label_counter = 0;
3638
3639     DrawPreviewLevelPlayfield(from_x, from_y);
3640     DrawPreviewLevelLabel(label_state);
3641
3642     DrawPreviewLevelInfo(MICROLABEL_LEVEL_NAME);
3643     DrawPreviewLevelInfo(MICROLABEL_LEVEL_AUTHOR);
3644
3645     // initialize delay counters
3646     ResetDelayCounter(&scroll_delay);
3647     ResetDelayCounter(&label_delay);
3648
3649     if (leveldir_current->name)
3650     {
3651       struct TextPosInfo *pos = &menu.main.text.level_info_1;
3652       char label_text[MAX_OUTPUT_LINESIZE + 1];
3653       int font_nr = pos->font;
3654       int max_len_label_text = getMaxTextLength(pos, font_nr);
3655
3656       if (pos->size != -1)
3657         max_len_label_text = pos->size;
3658
3659       strncpy(label_text, leveldir_current->name, max_len_label_text);
3660       label_text[max_len_label_text] = '\0';
3661
3662       if (IN_GFX_FIELD_FULL(pos->x, pos->y + getFontHeight(pos->font)))
3663         DrawTextSAligned(pos->x, pos->y, label_text, font_nr, pos->align);
3664     }
3665
3666     return;
3667   }
3668
3669   // scroll preview level, if needed
3670   if (preview.anim_mode != ANIM_NONE &&
3671       (level_xsize > preview.xsize || level_ysize > preview.ysize) &&
3672       DelayReached(&scroll_delay))
3673   {
3674     switch (scroll_direction)
3675     {
3676       case MV_LEFT:
3677         if (from_x > 0)
3678         {
3679           from_x -= preview.step_offset;
3680           from_x = (from_x < 0 ? 0 : from_x);
3681         }
3682         else
3683           scroll_direction = MV_UP;
3684         break;
3685
3686       case MV_RIGHT:
3687         if (from_x < level_xsize - preview.xsize)
3688         {
3689           from_x += preview.step_offset;
3690           from_x = (from_x > level_xsize - preview.xsize ?
3691                     level_xsize - preview.xsize : from_x);
3692         }
3693         else
3694           scroll_direction = MV_DOWN;
3695         break;
3696
3697       case MV_UP:
3698         if (from_y > 0)
3699         {
3700           from_y -= preview.step_offset;
3701           from_y = (from_y < 0 ? 0 : from_y);
3702         }
3703         else
3704           scroll_direction = MV_RIGHT;
3705         break;
3706
3707       case MV_DOWN:
3708         if (from_y < level_ysize - preview.ysize)
3709         {
3710           from_y += preview.step_offset;
3711           from_y = (from_y > level_ysize - preview.ysize ?
3712                     level_ysize - preview.ysize : from_y);
3713         }
3714         else
3715           scroll_direction = MV_LEFT;
3716         break;
3717
3718       default:
3719         break;
3720     }
3721
3722     DrawPreviewLevelPlayfield(from_x, from_y);
3723   }
3724
3725   // !!! THIS ALL SUCKS -- SHOULD BE CLEANLY REWRITTEN !!!
3726   // redraw micro level label, if needed
3727   if (!strEqual(level.name, NAMELESS_LEVEL_NAME) &&
3728       !strEqual(level.author, ANONYMOUS_NAME) &&
3729       !strEqual(level.author, leveldir_current->name) &&
3730       DelayReached(&label_delay))
3731   {
3732     int max_label_counter = 23;
3733
3734     if (leveldir_current->imported_from != NULL &&
3735         strlen(leveldir_current->imported_from) > 0)
3736       max_label_counter += 14;
3737     if (leveldir_current->imported_by != NULL &&
3738         strlen(leveldir_current->imported_by) > 0)
3739       max_label_counter += 14;
3740
3741     label_counter = (label_counter + 1) % max_label_counter;
3742     label_state = (label_counter >= 0 && label_counter <= 7 ?
3743                    MICROLABEL_LEVEL_NAME :
3744                    label_counter >= 9 && label_counter <= 12 ?
3745                    MICROLABEL_LEVEL_AUTHOR_HEAD :
3746                    label_counter >= 14 && label_counter <= 21 ?
3747                    MICROLABEL_LEVEL_AUTHOR :
3748                    label_counter >= 23 && label_counter <= 26 ?
3749                    MICROLABEL_IMPORTED_FROM_HEAD :
3750                    label_counter >= 28 && label_counter <= 35 ?
3751                    MICROLABEL_IMPORTED_FROM :
3752                    label_counter >= 37 && label_counter <= 40 ?
3753                    MICROLABEL_IMPORTED_BY_HEAD :
3754                    label_counter >= 42 && label_counter <= 49 ?
3755                    MICROLABEL_IMPORTED_BY : MICROLABEL_EMPTY);
3756
3757     if (leveldir_current->imported_from == NULL &&
3758         (label_state == MICROLABEL_IMPORTED_FROM_HEAD ||
3759          label_state == MICROLABEL_IMPORTED_FROM))
3760       label_state = (label_state == MICROLABEL_IMPORTED_FROM_HEAD ?
3761                      MICROLABEL_IMPORTED_BY_HEAD : MICROLABEL_IMPORTED_BY);
3762
3763     DrawPreviewLevelLabel(label_state);
3764   }
3765 }
3766
3767 void DrawPreviewPlayers(void)
3768 {
3769   if (game_status != GAME_MODE_MAIN)
3770     return;
3771
3772   // do not draw preview players if level preview redefined, but players aren't
3773   if (preview.redefined && !menu.main.preview_players.redefined)
3774     return;
3775
3776   boolean player_found[MAX_PLAYERS];
3777   int num_players = 0;
3778   int i, x, y;
3779
3780   for (i = 0; i < MAX_PLAYERS; i++)
3781     player_found[i] = FALSE;
3782
3783   // check which players can be found in the level (simple approach)
3784   for (x = 0; x < lev_fieldx; x++)
3785   {
3786     for (y = 0; y < lev_fieldy; y++)
3787     {
3788       int element = level.field[x][y];
3789
3790       if (IS_PLAYER_ELEMENT(element))
3791       {
3792         int player_nr = GET_PLAYER_NR(element);
3793
3794         player_nr = MIN(MAX(0, player_nr), MAX_PLAYERS - 1);
3795
3796         if (!player_found[player_nr])
3797           num_players++;
3798
3799         player_found[player_nr] = TRUE;
3800       }
3801     }
3802   }
3803
3804   struct TextPosInfo *pos = &menu.main.preview_players;
3805   int tile_size = pos->tile_size;
3806   int border_size = pos->border_size;
3807   int player_xoffset_raw = (pos->vertical ? 0 : tile_size + border_size);
3808   int player_yoffset_raw = (pos->vertical ? tile_size + border_size : 0);
3809   int player_xoffset = (pos->xoffset != -1 ? pos->xoffset : player_xoffset_raw);
3810   int player_yoffset = (pos->yoffset != -1 ? pos->yoffset : player_yoffset_raw);
3811   int max_players_width  = (MAX_PLAYERS - 1) * player_xoffset + tile_size;
3812   int max_players_height = (MAX_PLAYERS - 1) * player_yoffset + tile_size;
3813   int all_players_width  = (num_players - 1) * player_xoffset + tile_size;
3814   int all_players_height = (num_players - 1) * player_yoffset + tile_size;
3815   int max_xpos = SX + ALIGNED_XPOS(pos->x, max_players_width,  pos->align);
3816   int max_ypos = SY + ALIGNED_YPOS(pos->y, max_players_height, pos->valign);
3817   int xpos = SX + ALIGNED_XPOS(pos->x, all_players_width,  pos->align);
3818   int ypos = SY + ALIGNED_YPOS(pos->y, all_players_height, pos->valign);
3819
3820   // clear area in which the players will be drawn
3821   ClearRectangleOnBackground(drawto, max_xpos, max_ypos,
3822                              max_players_width, max_players_height);
3823
3824   if (!network.enabled && !setup.team_mode)
3825     return;
3826
3827   // only draw players if level is suited for team mode
3828   if (num_players < 2)
3829     return;
3830
3831   // draw all players that were found in the level
3832   for (i = 0; i < MAX_PLAYERS; i++)
3833   {
3834     if (player_found[i])
3835     {
3836       int graphic = el2img(EL_PLAYER_1 + i);
3837
3838       DrawSizedGraphicThruMaskExt(drawto, xpos, ypos, graphic, 0, tile_size);
3839
3840       xpos += player_xoffset;
3841       ypos += player_yoffset;
3842     }
3843   }
3844 }
3845
3846 static void PreparePreviewTileBitmap(void)
3847 {
3848   // check if special preview bitmap with level-specific colors should be created
3849   if (level.game_engine_type != GAME_ENGINE_TYPE_BD)
3850     return;
3851
3852   // use original sized bitmap (else reduced color palette is lost by downscaling)
3853   int original_tilesize = MAX(MINI_TILESIZE, preview.tile_size);
3854   int scale_down_factor = original_tilesize / preview.tile_size;
3855   Bitmap *src_bitmap;
3856   int src_x, src_y;
3857   int element_template = EL_BD_GAME_GRAPHICS_COLOR_TEMPLATE;
3858   int graphic_template = el2preimg(element_template);
3859   int element_default = EL_BD_ROCK;
3860   int graphic_default = el2preimg(element_default);
3861
3862   // create special preview bitmap and scale it down to preview tile size
3863   getSizedGraphicSource(graphic_template, 0, original_tilesize, &src_bitmap, &src_x, &src_y);
3864   PreparePreviewTileBitmap_BD(src_bitmap, scale_down_factor);
3865
3866   // force using special preview bitmap to replace original preview bitmap
3867   getSizedGraphicSource(graphic_default, 0, preview.tile_size, &src_bitmap, &src_x, &src_y);
3868   SetPreviewTileBitmapReference_BD(src_bitmap);
3869 }
3870
3871 void DrawPreviewLevelInitial(void)
3872 {
3873   PreparePreviewTileBitmap();   // only needed for native BD style levels
3874
3875   DrawPreviewLevelExt(TRUE);
3876   DrawPreviewPlayers();
3877 }
3878
3879 void DrawPreviewLevelAnimation(void)
3880 {
3881   DrawPreviewLevelExt(FALSE);
3882 }
3883
3884 static void DrawNetworkPlayer(int x, int y, int player_nr, int tile_size,
3885                               int border_size, int font_nr)
3886 {
3887   int graphic = el2img(EL_PLAYER_1 + player_nr);
3888   int font_height = getFontHeight(font_nr);
3889   int player_height = MAX(tile_size, font_height);
3890   int xoffset_text = tile_size + border_size;
3891   int yoffset_text    = (player_height - font_height) / 2;
3892   int yoffset_graphic = (player_height - tile_size) / 2;
3893   char *player_name = getNetworkPlayerName(player_nr + 1);
3894
3895   DrawSizedGraphicThruMaskExt(drawto, x, y + yoffset_graphic, graphic, 0,
3896                               tile_size);
3897   DrawText(x + xoffset_text, y + yoffset_text, player_name, font_nr);
3898 }
3899
3900 static void DrawNetworkPlayersExt(boolean force)
3901 {
3902   if (game_status != GAME_MODE_MAIN)
3903     return;
3904
3905   if (!network.connected && !force)
3906     return;
3907
3908   // do not draw network players if level preview redefined, but players aren't
3909   if (preview.redefined && !menu.main.network_players.redefined)
3910     return;
3911
3912   int num_players = 0;
3913   int i;
3914
3915   for (i = 0; i < MAX_PLAYERS; i++)
3916     if (stored_player[i].connected_network)
3917       num_players++;
3918
3919   struct TextPosInfo *pos = &menu.main.network_players;
3920   int tile_size = pos->tile_size;
3921   int border_size = pos->border_size;
3922   int xoffset_text = tile_size + border_size;
3923   int font_nr = pos->font;
3924   int font_width = getFontWidth(font_nr);
3925   int font_height = getFontHeight(font_nr);
3926   int player_height = MAX(tile_size, font_height);
3927   int player_yoffset = player_height + border_size;
3928   int max_players_width = xoffset_text + MAX_PLAYER_NAME_LEN * font_width;
3929   int max_players_height = MAX_PLAYERS * player_yoffset - border_size;
3930   int all_players_height = num_players * player_yoffset - border_size;
3931   int max_xpos = SX + ALIGNED_XPOS(pos->x, max_players_width,  pos->align);
3932   int max_ypos = SY + ALIGNED_YPOS(pos->y, max_players_height, pos->valign);
3933   int ypos = SY + ALIGNED_YPOS(pos->y, all_players_height, pos->valign);
3934
3935   ClearRectangleOnBackground(drawto, max_xpos, max_ypos,
3936                              max_players_width, max_players_height);
3937
3938   // first draw local network player ...
3939   for (i = 0; i < MAX_PLAYERS; i++)
3940   {
3941     if (stored_player[i].connected_network &&
3942         stored_player[i].connected_locally)
3943     {
3944       char *player_name = getNetworkPlayerName(i + 1);
3945       int player_width = xoffset_text + getTextWidth(player_name, font_nr);
3946       int xpos = SX + ALIGNED_XPOS(pos->x, player_width,  pos->align);
3947
3948       DrawNetworkPlayer(xpos, ypos, i, tile_size, border_size, font_nr);
3949
3950       ypos += player_yoffset;
3951     }
3952   }
3953
3954   // ... then draw all other network players
3955   for (i = 0; i < MAX_PLAYERS; i++)
3956   {
3957     if (stored_player[i].connected_network &&
3958         !stored_player[i].connected_locally)
3959     {
3960       char *player_name = getNetworkPlayerName(i + 1);
3961       int player_width = xoffset_text + getTextWidth(player_name, font_nr);
3962       int xpos = SX + ALIGNED_XPOS(pos->x, player_width,  pos->align);
3963
3964       DrawNetworkPlayer(xpos, ypos, i, tile_size, border_size, font_nr);
3965
3966       ypos += player_yoffset;
3967     }
3968   }
3969 }
3970
3971 void DrawNetworkPlayers(void)
3972 {
3973   DrawNetworkPlayersExt(FALSE);
3974 }
3975
3976 void ClearNetworkPlayers(void)
3977 {
3978   DrawNetworkPlayersExt(TRUE);
3979 }
3980
3981 static void DrawGraphicAnimationExt(DrawBuffer *dst_bitmap, int x, int y,
3982                                     int graphic, int lx, int ly,
3983                                     int mask_mode)
3984 {
3985   int frame = getGraphicAnimationFrameXY(graphic, lx, ly);
3986
3987   if (mask_mode == USE_MASKING)
3988     DrawGraphicThruMaskExt(dst_bitmap, x, y, graphic, frame);
3989   else
3990     DrawGraphicExt(dst_bitmap, x, y, graphic, frame);
3991 }
3992
3993 void DrawFixedGraphicAnimationExt(DrawBuffer *dst_bitmap, int x, int y,
3994                                   int graphic, int sync_frame, int mask_mode)
3995 {
3996   int frame = getGraphicAnimationFrame(graphic, sync_frame);
3997
3998   if (mask_mode == USE_MASKING)
3999     DrawFixedGraphicThruMaskExt(dst_bitmap, x, y, graphic, frame);
4000   else
4001     DrawFixedGraphicExt(dst_bitmap, x, y, graphic, frame);
4002 }
4003
4004 void DrawSizedGraphicAnimationExt(DrawBuffer *dst_bitmap, int x, int y,
4005                                   int graphic, int sync_frame, int tilesize,
4006                                   int mask_mode)
4007 {
4008   int frame = getGraphicAnimationFrame(graphic, sync_frame);
4009
4010   if (mask_mode == USE_MASKING)
4011     DrawSizedGraphicThruMaskExt(dst_bitmap, x, y, graphic, frame, tilesize);
4012   else
4013     DrawSizedGraphicExt(dst_bitmap, x, y, graphic, frame, tilesize);
4014 }
4015
4016 static void DrawGraphicAnimation(int x, int y, int graphic)
4017 {
4018   int lx = LEVELX(x), ly = LEVELY(y);
4019   int mask_mode = NO_MASKING;
4020
4021   if (!IN_SCR_FIELD(x, y))
4022     return;
4023
4024   if (game.use_masked_elements)
4025   {
4026     if (Tile[lx][ly] != EL_EMPTY)
4027     {
4028       DrawScreenElementExt(x, y, 0, 0, EL_EMPTY, NO_CUTTING, NO_MASKING);
4029
4030       mask_mode = USE_MASKING;
4031     }
4032   }
4033
4034   DrawGraphicAnimationExt(drawto_field, FX + x * TILEX_VAR, FY + y * TILEY_VAR,
4035                           graphic, lx, ly, mask_mode);
4036
4037   MarkTileDirty(x, y);
4038 }
4039
4040 void DrawFixedGraphicAnimation(int x, int y, int graphic)
4041 {
4042   int lx = LEVELX(x), ly = LEVELY(y);
4043   int mask_mode = NO_MASKING;
4044
4045   if (!IN_SCR_FIELD(x, y))
4046     return;
4047
4048   if (game.use_masked_elements)
4049   {
4050     if (Tile[lx][ly] != EL_EMPTY)
4051     {
4052       DrawScreenElementExt(x, y, 0, 0, EL_EMPTY, NO_CUTTING, NO_MASKING);
4053
4054       mask_mode = USE_MASKING;
4055     }
4056   }
4057
4058   DrawGraphicAnimationExt(drawto_field, FX + x * TILEX, FY + y * TILEY,
4059                           graphic, lx, ly, mask_mode);
4060
4061   MarkTileDirty(x, y);
4062 }
4063
4064 void DrawLevelGraphicAnimation(int x, int y, int graphic)
4065 {
4066   DrawGraphicAnimation(SCREENX(x), SCREENY(y), graphic);
4067 }
4068
4069 void DrawLevelElementAnimation(int x, int y, int element)
4070 {
4071   int graphic = el_act_dir2img(element, GfxAction[x][y], GfxDir[x][y]);
4072
4073   DrawGraphicAnimation(SCREENX(x), SCREENY(y), graphic);
4074 }
4075
4076 void DrawLevelGraphicAnimationIfNeeded(int x, int y, int graphic)
4077 {
4078   int sx = SCREENX(x), sy = SCREENY(y);
4079
4080   if (!IN_LEV_FIELD(x, y) || !IN_SCR_FIELD(sx, sy))
4081     return;
4082
4083   if (Tile[x][y] == EL_EMPTY)
4084     graphic = el2img(GfxElementEmpty[x][y]);
4085
4086   if (!IS_NEW_FRAME(GfxFrame[x][y], graphic))
4087     return;
4088
4089   if (ANIM_MODE(graphic) & (ANIM_TILED | ANIM_RANDOM_STATIC))
4090     return;
4091
4092   DrawGraphicAnimation(sx, sy, graphic);
4093
4094 #if 1
4095   if (GFX_CRUMBLED(TILE_GFX_ELEMENT(x, y)))
4096     DrawLevelFieldCrumbled(x, y);
4097 #else
4098   if (GFX_CRUMBLED(Tile[x][y]))
4099     DrawLevelFieldCrumbled(x, y);
4100 #endif
4101 }
4102
4103 void DrawLevelElementAnimationIfNeeded(int x, int y, int element)
4104 {
4105   int sx = SCREENX(x), sy = SCREENY(y);
4106   int graphic;
4107
4108   if (!IN_LEV_FIELD(x, y) || !IN_SCR_FIELD(sx, sy))
4109     return;
4110
4111   graphic = el_act_dir2img(element, GfxAction[x][y], GfxDir[x][y]);
4112
4113   if (!IS_NEW_FRAME(GfxFrame[x][y], graphic))
4114     return;
4115
4116   DrawGraphicAnimation(sx, sy, graphic);
4117
4118   if (GFX_CRUMBLED(element))
4119     DrawLevelFieldCrumbled(x, y);
4120 }
4121
4122 static int getPlayerGraphic(struct PlayerInfo *player, int move_dir)
4123 {
4124   if (player->use_murphy)
4125   {
4126     // this works only because currently only one player can be "murphy" ...
4127     static int last_horizontal_dir = MV_LEFT;
4128     int graphic = el_act_dir2img(EL_SP_MURPHY, player->GfxAction, move_dir);
4129
4130     if (move_dir == MV_LEFT || move_dir == MV_RIGHT)
4131       last_horizontal_dir = move_dir;
4132
4133     if (graphic == IMG_SP_MURPHY)       // undefined => use special graphic
4134     {
4135       int direction = (player->is_snapping ? move_dir : last_horizontal_dir);
4136
4137       graphic = el_act_dir2img(EL_SP_MURPHY, player->GfxAction, direction);
4138     }
4139
4140     return graphic;
4141   }
4142   else
4143     return el_act_dir2img(player->artwork_element, player->GfxAction, move_dir);
4144 }
4145
4146 static boolean equalGraphics(int graphic1, int graphic2)
4147 {
4148   struct GraphicInfo *g1 = &graphic_info[graphic1];
4149   struct GraphicInfo *g2 = &graphic_info[graphic2];
4150
4151   return (g1->bitmap      == g2->bitmap &&
4152           g1->src_x       == g2->src_x &&
4153           g1->src_y       == g2->src_y &&
4154           g1->anim_frames == g2->anim_frames &&
4155           g1->anim_delay  == g2->anim_delay &&
4156           g1->anim_mode   == g2->anim_mode);
4157 }
4158
4159 #define DRAW_PLAYER_OVER_PUSHED_ELEMENT 1
4160
4161 enum
4162 {
4163   DRAW_PLAYER_STAGE_INIT = 0,
4164   DRAW_PLAYER_STAGE_LAST_FIELD,
4165   DRAW_PLAYER_STAGE_FIELD_UNDER_PLAYER,
4166 #if DRAW_PLAYER_OVER_PUSHED_ELEMENT
4167   DRAW_PLAYER_STAGE_ELEMENT_PUSHED,
4168   DRAW_PLAYER_STAGE_PLAYER,
4169 #else
4170   DRAW_PLAYER_STAGE_PLAYER,
4171   DRAW_PLAYER_STAGE_ELEMENT_PUSHED,
4172 #endif
4173   DRAW_PLAYER_STAGE_ELEMENT_OVER_PLAYER,
4174   DRAW_PLAYER_STAGE_FIELD_OVER_PLAYER,
4175
4176   NUM_DRAW_PLAYER_STAGES
4177 };
4178
4179 static void DrawPlayerExt(struct PlayerInfo *player, int drawing_stage)
4180 {
4181   static int static_last_player_graphic[MAX_PLAYERS];
4182   static int static_last_player_frame[MAX_PLAYERS];
4183   static boolean static_player_is_opaque[MAX_PLAYERS];
4184   static boolean draw_player[MAX_PLAYERS];
4185   int pnr = player->index_nr;
4186
4187   if (drawing_stage == DRAW_PLAYER_STAGE_INIT)
4188   {
4189     static_last_player_graphic[pnr] = getPlayerGraphic(player, player->MovDir);
4190     static_last_player_frame[pnr] = player->Frame;
4191     static_player_is_opaque[pnr] = FALSE;
4192
4193     draw_player[pnr] = TRUE;
4194   }
4195
4196   if (!draw_player[pnr])
4197     return;
4198
4199 #if DEBUG
4200   if (!IN_LEV_FIELD(player->jx, player->jy))
4201   {
4202     Debug("draw:DrawPlayerExt", "x = %d, y = %d", player->jx, player->jy);
4203     Debug("draw:DrawPlayerExt", "This should never happen!");
4204
4205     draw_player[pnr] = FALSE;
4206
4207     return;
4208   }
4209 #endif
4210
4211   int last_player_graphic  = static_last_player_graphic[pnr];
4212   int last_player_frame    = static_last_player_frame[pnr];
4213   boolean player_is_opaque = static_player_is_opaque[pnr];
4214
4215   int jx = player->jx;
4216   int jy = player->jy;
4217   int move_dir = (player->is_waiting ? player->dir_waiting : player->MovDir);
4218   int dx = (move_dir == MV_LEFT ? -1 : move_dir == MV_RIGHT ? +1 : 0);
4219   int dy = (move_dir == MV_UP   ? -1 : move_dir == MV_DOWN  ? +1 : 0);
4220   int last_jx = (player->is_moving ? jx - dx : jx);
4221   int last_jy = (player->is_moving ? jy - dy : jy);
4222   int next_jx = jx + dx;
4223   int next_jy = jy + dy;
4224   boolean player_is_moving = (player->MovPos != 0 ? TRUE : FALSE);
4225   int sx = SCREENX(jx);
4226   int sy = SCREENY(jy);
4227   int sxx = (move_dir == MV_LEFT || move_dir == MV_RIGHT ? player->GfxPos : 0);
4228   int syy = (move_dir == MV_UP   || move_dir == MV_DOWN  ? player->GfxPos : 0);
4229   int element = Tile[jx][jy];
4230   int last_element = Tile[last_jx][last_jy];
4231   int action = (player->is_pushing    ? ACTION_PUSHING         :
4232                 player->is_digging    ? ACTION_DIGGING         :
4233                 player->is_collecting ? ACTION_COLLECTING      :
4234                 player->is_moving     ? ACTION_MOVING          :
4235                 player->is_snapping   ? ACTION_SNAPPING        :
4236                 player->is_dropping   ? ACTION_DROPPING        :
4237                 player->is_waiting    ? player->action_waiting :
4238                 ACTION_DEFAULT);
4239
4240   if (drawing_stage == DRAW_PLAYER_STAGE_INIT)
4241   {
4242     // ------------------------------------------------------------------------
4243     // initialize drawing the player
4244     // ------------------------------------------------------------------------
4245
4246     draw_player[pnr] = FALSE;
4247
4248     // GfxElement[][] is set to the element the player is digging or collecting;
4249     // remove also for off-screen player if the player is not moving anymore
4250     if (IN_LEV_FIELD(jx, jy) && !player_is_moving)
4251       GfxElement[jx][jy] = EL_UNDEFINED;
4252
4253     if (!player->active || !IN_SCR_FIELD(SCREENX(last_jx), SCREENY(last_jy)))
4254       return;
4255
4256     if (element == EL_EXPLOSION)
4257       return;
4258
4259     InitPlayerGfxAnimation(player, action, move_dir);
4260
4261     draw_player[pnr] = TRUE;
4262   }
4263   else if (drawing_stage == DRAW_PLAYER_STAGE_LAST_FIELD)
4264   {
4265     // ------------------------------------------------------------------------
4266     // draw things in the field the player is leaving, if needed
4267     // ------------------------------------------------------------------------
4268
4269     if (!IN_SCR_FIELD(sx, sy))
4270       draw_player[pnr] = FALSE;
4271
4272     if (!player->is_moving)
4273       return;
4274
4275     if (Back[last_jx][last_jy] && IS_DRAWABLE(last_element))
4276     {
4277       DrawLevelElement(last_jx, last_jy, Back[last_jx][last_jy]);
4278
4279       if (last_element == EL_DYNAMITE_ACTIVE ||
4280           last_element == EL_EM_DYNAMITE_ACTIVE ||
4281           last_element == EL_SP_DISK_RED_ACTIVE)
4282         DrawDynamite(last_jx, last_jy);
4283       else
4284         DrawLevelFieldThruMask(last_jx, last_jy);
4285     }
4286     else if (last_element == EL_DYNAMITE_ACTIVE ||
4287              last_element == EL_EM_DYNAMITE_ACTIVE ||
4288              last_element == EL_SP_DISK_RED_ACTIVE)
4289       DrawDynamite(last_jx, last_jy);
4290     else
4291       DrawLevelField(last_jx, last_jy);
4292   }
4293   else if (drawing_stage == DRAW_PLAYER_STAGE_FIELD_UNDER_PLAYER)
4294   {
4295     // ------------------------------------------------------------------------
4296     // draw things behind the player, if needed
4297     // ------------------------------------------------------------------------
4298
4299     if (Back[jx][jy])
4300     {
4301       DrawLevelElement(jx, jy, Back[jx][jy]);
4302
4303       return;
4304     }
4305
4306     if (IS_ACTIVE_BOMB(element))
4307     {
4308       DrawLevelElement(jx, jy, EL_EMPTY);
4309
4310       return;
4311     }
4312
4313     if (player_is_moving && GfxElement[jx][jy] != EL_UNDEFINED)
4314     {
4315       int old_element = GfxElement[jx][jy];
4316       int old_graphic = el_act_dir2img(old_element, action, move_dir);
4317       int frame = getGraphicAnimationFrame(old_graphic, player->StepFrame);
4318
4319       if (GFX_CRUMBLED(old_element))
4320         DrawLevelFieldCrumbledDigging(jx, jy, move_dir, player->StepFrame);
4321       else
4322         DrawScreenGraphic(sx, sy, old_graphic, frame);
4323
4324       if (graphic_info[old_graphic].anim_mode & ANIM_OPAQUE_PLAYER)
4325         static_player_is_opaque[pnr] = TRUE;
4326     }
4327     else
4328     {
4329       GfxElement[jx][jy] = EL_UNDEFINED;
4330
4331       // make sure that pushed elements are drawn with correct frame rate
4332       int graphic = el_act_dir2img(element, ACTION_PUSHING, move_dir);
4333
4334       if (player->is_pushing && player->is_moving && !IS_ANIM_MODE_CE(graphic))
4335         GfxFrame[jx][jy] = player->StepFrame;
4336
4337       DrawLevelField(jx, jy);
4338     }
4339   }
4340   else if (drawing_stage == DRAW_PLAYER_STAGE_ELEMENT_PUSHED)
4341   {
4342     // ------------------------------------------------------------------------
4343     // draw things the player is pushing, if needed
4344     // ------------------------------------------------------------------------
4345
4346     if (!player->is_pushing || !player->is_moving)
4347       return;
4348
4349     if (Tile[next_jx][next_jy] == EL_EXPLOSION)
4350       return;
4351
4352     int gfx_frame = GfxFrame[jx][jy];
4353
4354     if (!IS_MOVING(jx, jy))             // push movement already finished
4355     {
4356       element = Tile[next_jx][next_jy];
4357       gfx_frame = GfxFrame[next_jx][next_jy];
4358     }
4359
4360     int graphic = el_act_dir2img(element, ACTION_PUSHING, move_dir);
4361     int sync_frame = (IS_ANIM_MODE_CE(graphic) ? gfx_frame : player->StepFrame);
4362     int frame = getGraphicAnimationFrame(graphic, sync_frame);
4363
4364     // draw background element under pushed element (like the Sokoban field)
4365     if (game.use_masked_pushing && IS_MOVING(jx, jy))
4366     {
4367       // this allows transparent pushing animation over non-black background
4368
4369       if (Back[jx][jy])
4370         DrawLevelElement(jx, jy, Back[jx][jy]);
4371       else
4372         DrawLevelElement(jx, jy, EL_EMPTY);
4373     }
4374
4375     if (Back[next_jx][next_jy])
4376       DrawLevelElement(next_jx, next_jy, Back[next_jx][next_jy]);
4377     else
4378       DrawLevelElement(next_jx, next_jy, EL_EMPTY);
4379
4380     int px = SCREENX(jx), py = SCREENY(jy);
4381     int pxx = (TILEX - ABS(sxx)) * dx;
4382     int pyy = (TILEY - ABS(syy)) * dy;
4383
4384 #if 1
4385     // do not draw (EM style) pushing animation when pushing is finished
4386     // (two-tile animations usually do not contain start and end frame)
4387     if (graphic_info[graphic].double_movement && !IS_MOVING(jx, jy))
4388       DrawLevelElement(next_jx, next_jy, Tile[next_jx][next_jy]);
4389     else
4390       DrawGraphicShiftedThruMask(px, py, pxx, pyy, graphic, frame, NO_CUTTING);
4391 #else
4392     // masked drawing is needed for EMC style (double) movement graphics
4393     // !!! (ONLY WHEN DRAWING PUSHED ELEMENT OVER THE PLAYER) !!!
4394     DrawGraphicShiftedThruMask(px, py, pxx, pyy, graphic, frame, NO_CUTTING);
4395 #endif
4396   }
4397   else if (drawing_stage == DRAW_PLAYER_STAGE_PLAYER)
4398   {
4399     // ------------------------------------------------------------------------
4400     // draw player himself
4401     // ------------------------------------------------------------------------
4402
4403     int graphic = getPlayerGraphic(player, move_dir);
4404
4405     // in the case of changed player action or direction, prevent the current
4406     // animation frame from being restarted for identical animations
4407     if (player->Frame == 0 && equalGraphics(graphic, last_player_graphic))
4408       player->Frame = last_player_frame;
4409
4410     int frame = getGraphicAnimationFrame(graphic, player->Frame);
4411
4412     if (player_is_opaque)
4413       DrawGraphicShifted(sx,sy, sxx,syy, graphic, frame, NO_CUTTING,NO_MASKING);
4414     else
4415       DrawGraphicShiftedThruMask(sx, sy, sxx, syy, graphic, frame, NO_CUTTING);
4416
4417     if (SHIELD_ON(player))
4418     {
4419       graphic = (player->shield_deadly_time_left ? IMG_SHIELD_DEADLY_ACTIVE :
4420                  IMG_SHIELD_NORMAL_ACTIVE);
4421       frame = getGraphicAnimationFrame(graphic, -1);
4422
4423       DrawGraphicShiftedThruMask(sx, sy, sxx, syy, graphic, frame, NO_CUTTING);
4424     }
4425   }
4426   else if (drawing_stage == DRAW_PLAYER_STAGE_ELEMENT_OVER_PLAYER)
4427   {
4428     // ------------------------------------------------------------------------
4429     // draw things in front of player (active dynamite or dynabombs)
4430     // ------------------------------------------------------------------------
4431
4432     if (IS_ACTIVE_BOMB(element))
4433     {
4434       int graphic = el2img(element);
4435       int frame = getGraphicAnimationFrameXY(graphic, jx, jy);
4436
4437       if (game.emulation == EMU_SUPAPLEX)
4438         DrawGraphic(sx, sy, IMG_SP_DISK_RED, frame);
4439       else
4440         DrawGraphicThruMask(sx, sy, graphic, frame);
4441     }
4442
4443     if (player_is_moving && last_element == EL_EXPLOSION)
4444     {
4445       int element = (GfxElement[last_jx][last_jy] != EL_UNDEFINED ?
4446                      GfxElement[last_jx][last_jy] :  EL_EMPTY);
4447       int graphic = el_act2img(element, ACTION_EXPLODING);
4448       int delay = (game.emulation == EMU_SUPAPLEX ? 3 : 2);
4449       int phase = ExplodePhase[last_jx][last_jy] - 1;
4450       int frame = getGraphicAnimationFrame(graphic, phase - delay);
4451
4452       if (phase >= delay)
4453         DrawGraphicThruMask(SCREENX(last_jx), SCREENY(last_jy), graphic, frame);
4454     }
4455   }
4456   else if (drawing_stage == DRAW_PLAYER_STAGE_FIELD_OVER_PLAYER)
4457   {
4458     // ------------------------------------------------------------------------
4459     // draw elements the player is just walking/passing through/under
4460     // ------------------------------------------------------------------------
4461
4462     if (player_is_moving)
4463     {
4464       // handle the field the player is leaving ...
4465       if (IS_ACCESSIBLE_INSIDE(last_element))
4466         DrawLevelField(last_jx, last_jy);
4467       else if (IS_ACCESSIBLE_UNDER(last_element))
4468         DrawLevelFieldThruMask(last_jx, last_jy);
4469     }
4470
4471     // do not redraw accessible elements if the player is just pushing them
4472     if (!player_is_moving || !player->is_pushing)
4473     {
4474       // ... and the field the player is entering
4475       if (IS_ACCESSIBLE_INSIDE(element))
4476         DrawLevelField(jx, jy);
4477       else if (IS_ACCESSIBLE_UNDER(element))
4478         DrawLevelFieldThruMask(jx, jy);
4479     }
4480
4481     MarkTileDirty(sx, sy);
4482   }
4483 }
4484
4485 void DrawPlayer(struct PlayerInfo *player)
4486 {
4487   int i;
4488
4489   for (i = 0; i < NUM_DRAW_PLAYER_STAGES; i++)
4490     DrawPlayerExt(player, i);
4491 }
4492
4493 void DrawAllPlayers(void)
4494 {
4495   int i, j;
4496
4497   for (i = 0; i < NUM_DRAW_PLAYER_STAGES; i++)
4498     for (j = 0; j < MAX_PLAYERS; j++)
4499       if (stored_player[j].active)
4500         DrawPlayerExt(&stored_player[j], i);
4501 }
4502
4503 void DrawPlayerField(int x, int y)
4504 {
4505   if (!IS_PLAYER(x, y))
4506     return;
4507
4508   DrawPlayer(PLAYERINFO(x, y));
4509 }
4510
4511 // ----------------------------------------------------------------------------
4512
4513 void WaitForEventToContinue(void)
4514 {
4515   boolean first_wait = TRUE;
4516   boolean still_wait = TRUE;
4517
4518   if (program.headless)
4519     return;
4520
4521   // simulate releasing mouse button over last gadget, if still pressed
4522   if (button_status)
4523     HandleGadgets(-1, -1, 0);
4524
4525   button_status = MB_RELEASED;
4526
4527   ClearEventQueue();
4528   ClearPlayerAction();
4529
4530   while (still_wait)
4531   {
4532     Event event;
4533
4534     if (NextValidEvent(&event))
4535     {
4536       switch (event.type)
4537       {
4538         case EVENT_BUTTONPRESS:
4539         case EVENT_FINGERPRESS:
4540           first_wait = FALSE;
4541           break;
4542
4543         case EVENT_BUTTONRELEASE:
4544         case EVENT_FINGERRELEASE:
4545           still_wait = first_wait;
4546           break;
4547
4548         case EVENT_KEYPRESS:
4549         case SDL_CONTROLLERBUTTONDOWN:
4550         case SDL_JOYBUTTONDOWN:
4551           still_wait = FALSE;
4552           break;
4553
4554         default:
4555           HandleOtherEvents(&event);
4556           break;
4557       }
4558     }
4559     else if (AnyJoystickButton() == JOY_BUTTON_NEW_PRESSED)
4560     {
4561       still_wait = FALSE;
4562     }
4563
4564     if (!PendingEvent())
4565       BackToFront();
4566   }
4567 }
4568
4569 static int RequestHandleEvents(unsigned int req_state, int draw_buffer_game)
4570 {
4571   boolean game_ended = (game_status == GAME_MODE_PLAYING && checkGameEnded());
4572   int draw_buffer_last = GetDrawtoField();
4573   int width  = request.width;
4574   int height = request.height;
4575   int sx, sy;
4576   int result;
4577
4578   setRequestPosition(&sx, &sy, FALSE);
4579
4580   button_status = MB_RELEASED;
4581
4582   request_gadget_id = -1;
4583   result = -1;
4584
4585   while (result < 0)
4586   {
4587     if (game_ended)
4588     {
4589       SetDrawtoField(draw_buffer_game);
4590
4591       HandleGameActions();
4592
4593       SetDrawtoField(DRAW_TO_BACKBUFFER);
4594     }
4595
4596     if (PendingEvent())
4597     {
4598       Event event;
4599
4600       while (NextValidEvent(&event))
4601       {
4602         switch (event.type)
4603         {
4604           case EVENT_BUTTONPRESS:
4605           case EVENT_BUTTONRELEASE:
4606           case EVENT_MOTIONNOTIFY:
4607           {
4608             DrawBuffer *drawto_last = drawto;
4609             int mx, my;
4610
4611             if (event.type == EVENT_MOTIONNOTIFY)
4612             {
4613               if (!button_status)
4614                 continue;
4615
4616               motion_status = TRUE;
4617               mx = ((MotionEvent *) &event)->x;
4618               my = ((MotionEvent *) &event)->y;
4619             }
4620             else
4621             {
4622               motion_status = FALSE;
4623               mx = ((ButtonEvent *) &event)->x;
4624               my = ((ButtonEvent *) &event)->y;
4625               if (event.type == EVENT_BUTTONPRESS)
4626                 button_status = ((ButtonEvent *) &event)->button;
4627               else
4628                 button_status = MB_RELEASED;
4629             }
4630
4631             if (global.use_envelope_request)
4632             {
4633               // draw changed button states to temporary bitmap
4634               drawto = bitmap_db_store_1;
4635             }
4636
4637             // this sets 'request_gadget_id'
4638             HandleGadgets(mx, my, button_status);
4639
4640             if (global.use_envelope_request)
4641             {
4642               // restore pointer to drawing buffer
4643               drawto = drawto_last;
4644
4645               // prepare complete envelope request from temporary bitmap
4646               PrepareEnvelopeRequestToScreen(bitmap_db_store_1, sx, sy,
4647                                              width, height);
4648             }
4649
4650             switch (request_gadget_id)
4651             {
4652               case TOOL_CTRL_ID_YES:
4653               case TOOL_CTRL_ID_TOUCH_YES:
4654                 result = TRUE;
4655                 break;
4656               case TOOL_CTRL_ID_NO:
4657               case TOOL_CTRL_ID_TOUCH_NO:
4658                 result = FALSE;
4659                 break;
4660               case TOOL_CTRL_ID_CONFIRM:
4661               case TOOL_CTRL_ID_TOUCH_CONFIRM:
4662                 result = TRUE | FALSE;
4663                 break;
4664
4665               case TOOL_CTRL_ID_PLAYER_1:
4666                 result = 1;
4667                 break;
4668               case TOOL_CTRL_ID_PLAYER_2:
4669                 result = 2;
4670                 break;
4671               case TOOL_CTRL_ID_PLAYER_3:
4672                 result = 3;
4673                 break;
4674               case TOOL_CTRL_ID_PLAYER_4:
4675                 result = 4;
4676                 break;
4677
4678               default:
4679                 break;
4680             }
4681
4682             // only needed to handle clickable pointer animations here
4683             HandleGlobalAnimClicks(mx, my, button_status, FALSE);
4684
4685             break;
4686           }
4687
4688           case SDL_WINDOWEVENT:
4689             HandleWindowEvent((WindowEvent *) &event);
4690             break;
4691
4692           case SDL_APP_WILLENTERBACKGROUND:
4693           case SDL_APP_DIDENTERBACKGROUND:
4694           case SDL_APP_WILLENTERFOREGROUND:
4695           case SDL_APP_DIDENTERFOREGROUND:
4696             HandlePauseResumeEvent((PauseResumeEvent *) &event);
4697             break;
4698
4699           case EVENT_KEYPRESS:
4700           {
4701             Key key = GetEventKey((KeyEvent *)&event);
4702
4703             switch (key)
4704             {
4705               case KSYM_space:
4706                 if (req_state & REQ_CONFIRM)
4707                   result = 1;
4708                 break;
4709
4710               case KSYM_Return:
4711               case KSYM_y:
4712               case KSYM_Y:
4713               case KSYM_Select:
4714               case KSYM_Menu:
4715 #if defined(KSYM_Rewind)
4716               case KSYM_Rewind:         // for Amazon Fire TV remote
4717 #endif
4718                 result = 1;
4719                 break;
4720
4721               case KSYM_Escape:
4722               case KSYM_n:
4723               case KSYM_N:
4724               case KSYM_Back:
4725 #if defined(KSYM_FastForward)
4726               case KSYM_FastForward:    // for Amazon Fire TV remote
4727 #endif
4728                 result = 0;
4729                 break;
4730
4731               default:
4732                 HandleKeysDebug(key, KEY_PRESSED);
4733                 break;
4734             }
4735
4736             if (req_state & REQ_PLAYER)
4737             {
4738               int old_player_nr = setup.network_player_nr;
4739
4740               if (result != -1)
4741                 result = old_player_nr + 1;
4742
4743               switch (key)
4744               {
4745                 case KSYM_space:
4746                   result = old_player_nr + 1;
4747                   break;
4748
4749                 case KSYM_Up:
4750                 case KSYM_1:
4751                   result = 1;
4752                   break;
4753
4754                 case KSYM_Right:
4755                 case KSYM_2:
4756                   result = 2;
4757                   break;
4758
4759                 case KSYM_Down:
4760                 case KSYM_3:
4761                   result = 3;
4762                   break;
4763
4764                 case KSYM_Left:
4765                 case KSYM_4:
4766                   result = 4;
4767                   break;
4768
4769                 default:
4770                   break;
4771               }
4772             }
4773
4774             break;
4775           }
4776
4777           case EVENT_FINGERRELEASE:
4778           case EVENT_KEYRELEASE:
4779             ClearPlayerAction();
4780             break;
4781
4782           case SDL_CONTROLLERBUTTONDOWN:
4783             switch (event.cbutton.button)
4784             {
4785               case SDL_CONTROLLER_BUTTON_A:
4786               case SDL_CONTROLLER_BUTTON_X:
4787               case SDL_CONTROLLER_BUTTON_LEFTSHOULDER:
4788               case SDL_CONTROLLER_BUTTON_LEFTSTICK:
4789                 result = 1;
4790                 break;
4791
4792               case SDL_CONTROLLER_BUTTON_B:
4793               case SDL_CONTROLLER_BUTTON_Y:
4794               case SDL_CONTROLLER_BUTTON_RIGHTSHOULDER:
4795               case SDL_CONTROLLER_BUTTON_RIGHTSTICK:
4796               case SDL_CONTROLLER_BUTTON_BACK:
4797                 result = 0;
4798                 break;
4799             }
4800
4801             if (req_state & REQ_PLAYER)
4802             {
4803               int old_player_nr = setup.network_player_nr;
4804
4805               if (result != -1)
4806                 result = old_player_nr + 1;
4807
4808               switch (event.cbutton.button)
4809               {
4810                 case SDL_CONTROLLER_BUTTON_DPAD_UP:
4811                 case SDL_CONTROLLER_BUTTON_Y:
4812                   result = 1;
4813                   break;
4814
4815                 case SDL_CONTROLLER_BUTTON_DPAD_RIGHT:
4816                 case SDL_CONTROLLER_BUTTON_B:
4817                   result = 2;
4818                   break;
4819
4820                 case SDL_CONTROLLER_BUTTON_DPAD_DOWN:
4821                 case SDL_CONTROLLER_BUTTON_A:
4822                   result = 3;
4823                   break;
4824
4825                 case SDL_CONTROLLER_BUTTON_DPAD_LEFT:
4826                 case SDL_CONTROLLER_BUTTON_X:
4827                   result = 4;
4828                   break;
4829
4830                 default:
4831                   break;
4832               }
4833             }
4834
4835             break;
4836
4837           case SDL_CONTROLLERBUTTONUP:
4838             HandleJoystickEvent(&event);
4839             ClearPlayerAction();
4840             break;
4841
4842           default:
4843             HandleOtherEvents(&event);
4844             break;
4845         }
4846       }
4847     }
4848     else if (AnyJoystickButton() == JOY_BUTTON_NEW_PRESSED)
4849     {
4850       int joy = AnyJoystick();
4851
4852       if (joy & JOY_BUTTON_1)
4853         result = 1;
4854       else if (joy & JOY_BUTTON_2)
4855         result = 0;
4856     }
4857     else if (AnyJoystick())
4858     {
4859       int joy = AnyJoystick();
4860
4861       if (req_state & REQ_PLAYER)
4862       {
4863         if (joy & JOY_UP)
4864           result = 1;
4865         else if (joy & JOY_RIGHT)
4866           result = 2;
4867         else if (joy & JOY_DOWN)
4868           result = 3;
4869         else if (joy & JOY_LEFT)
4870           result = 4;
4871       }
4872     }
4873
4874     BackToFront();
4875   }
4876
4877   SetDrawtoField(draw_buffer_last);
4878
4879   return result;
4880 }
4881
4882 static void DoRequestBefore(void)
4883 {
4884   boolean game_ended = (game_status == GAME_MODE_PLAYING && checkGameEnded());
4885
4886   // when showing request dialog after game ended, deactivate game panel
4887   if (game_ended)
4888     game.panel.active = FALSE;
4889
4890   if (game_status == GAME_MODE_PLAYING)
4891     BlitScreenToBitmap(backbuffer);
4892
4893   // disable deactivated drawing when quick-loading level tape recording
4894   if (tape.playing && tape.deactivate_display)
4895     TapeDeactivateDisplayOff(TRUE);
4896
4897   SetMouseCursor(CURSOR_DEFAULT);
4898
4899   // pause network game while waiting for request to answer
4900   if (network.enabled &&
4901       game_status == GAME_MODE_PLAYING &&
4902       !game.all_players_gone)
4903     SendToServer_PausePlaying();
4904
4905   // simulate releasing mouse button over last gadget, if still pressed
4906   if (button_status)
4907     HandleGadgets(-1, -1, 0);
4908
4909   UnmapAllGadgets();
4910 }
4911
4912 static void DoRequestAfter(void)
4913 {
4914   RemapAllGadgets();
4915
4916   if (game_status == GAME_MODE_PLAYING)
4917   {
4918     SetPanelBackground();
4919     SetDrawBackgroundMask(REDRAW_DOOR_1);
4920   }
4921   else
4922   {
4923     SetDrawBackgroundMask(REDRAW_FIELD);
4924   }
4925
4926   // continue network game after request
4927   if (network.enabled &&
4928       game_status == GAME_MODE_PLAYING &&
4929       !game.all_players_gone)
4930     SendToServer_ContinuePlaying();
4931
4932   // restore deactivated drawing when quick-loading level tape recording
4933   if (tape.playing && tape.deactivate_display)
4934     TapeDeactivateDisplayOn();
4935 }
4936
4937 static void setRequestDoorTextProperties(char *text,
4938                                          int text_spacing,
4939                                          int line_spacing,
4940                                          int *set_font_nr,
4941                                          int *set_max_lines,
4942                                          int *set_max_line_length)
4943 {
4944   struct RectWithBorder *vp_door_1 = &viewport.door_1[game_status];
4945   struct TextPosInfo *pos = &request.button.confirm;
4946   int button_ypos = pos->y;
4947   int font_nr = FONT_TEXT_2;
4948   int font_width = getFontWidth(font_nr);
4949   int font_height = getFontHeight(font_nr);
4950   int line_height = font_height + line_spacing;
4951   int max_text_width  = vp_door_1->width;
4952   int max_text_height = button_ypos - 2 * text_spacing;
4953   int max_line_length = max_text_width  / font_width;
4954   int max_lines       = max_text_height / line_height;
4955
4956   if (maxWordLengthInRequestString(text) > max_line_length)
4957   {
4958     font_nr = FONT_TEXT_1;
4959     font_width = getFontWidth(font_nr);
4960     max_line_length = max_text_width  / font_width;
4961   }
4962
4963   *set_font_nr = font_nr;
4964   *set_max_lines = max_lines;
4965   *set_max_line_length = max_line_length;
4966 }
4967
4968 static void DrawRequestDoorText(char *text)
4969 {
4970   char *text_ptr = text;
4971   int text_spacing = 8;
4972   int line_spacing = 2;
4973   int max_request_lines;
4974   int max_request_line_len;
4975   int font_nr;
4976   int ty;
4977
4978   // force DOOR font inside door area
4979   SetFontStatus(GAME_MODE_PSEUDO_DOOR);
4980
4981   setRequestDoorTextProperties(text, text_spacing, line_spacing, &font_nr,
4982                                &max_request_lines, &max_request_line_len);
4983
4984   for (text_ptr = text, ty = 0; ty < max_request_lines; ty++)
4985   {
4986     char text_line[max_request_line_len + 1];
4987     int tx, tl, tc = 0;
4988
4989     if (!*text_ptr)
4990       break;
4991
4992     for (tl = 0, tx = 0; tx < max_request_line_len; tl++, tx++)
4993     {
4994       tc = *(text_ptr + tx);
4995       if (!tc || tc == ' ' || tc == '?' || tc == '!')
4996         break;
4997     }
4998
4999     if ((tc == '?' || tc == '!') && tl == 0)
5000       tl = 1;
5001
5002     if (!tl)
5003     {
5004       text_ptr++;
5005       ty--;
5006       continue;
5007     }
5008
5009     strncpy(text_line, text_ptr, tl);
5010     text_line[tl] = 0;
5011
5012     DrawText(DX + (DXSIZE - tl * getFontWidth(font_nr)) / 2,
5013              DY + text_spacing + ty * (getFontHeight(font_nr) + line_spacing),
5014              text_line, font_nr);
5015
5016     text_ptr += tl + (tc == ' ' ? 1 : 0);
5017   }
5018
5019   ResetFontStatus();
5020 }
5021
5022 static int RequestDoor(char *text, unsigned int req_state)
5023 {
5024   unsigned int old_door_state = GetDoorState();
5025   int draw_buffer_last = GetDrawtoField();
5026   int result;
5027
5028   if (old_door_state & DOOR_OPEN_1)
5029   {
5030     CloseDoor(DOOR_CLOSE_1);
5031
5032     // save old door content
5033     BlitBitmap(bitmap_db_door_1, bitmap_db_door_1,
5034                0, 0, DXSIZE, DYSIZE, DXSIZE, 0);
5035   }
5036
5037   SetDoorBackgroundImage(IMG_BACKGROUND_DOOR);
5038   SetDrawBackgroundMask(REDRAW_FIELD | REDRAW_DOOR_1);
5039
5040   // clear door drawing field
5041   DrawBackground(DX, DY, DXSIZE, DYSIZE);
5042
5043   // write text for request
5044   DrawRequestDoorText(text);
5045
5046   MapToolButtons(req_state);
5047
5048   // copy request gadgets to door backbuffer
5049   BlitBitmap(drawto, bitmap_db_door_1, DX, DY, DXSIZE, DYSIZE, 0, 0);
5050
5051   OpenDoor(DOOR_OPEN_1);
5052
5053   // ---------- handle request buttons ----------
5054   result = RequestHandleEvents(req_state, draw_buffer_last);
5055
5056   UnmapToolButtons();
5057
5058   if (!(req_state & REQ_STAY_OPEN))
5059   {
5060     CloseDoor(DOOR_CLOSE_1);
5061
5062     if (((old_door_state & DOOR_OPEN_1) && !(req_state & REQ_STAY_CLOSED)) ||
5063         (req_state & REQ_REOPEN))
5064       OpenDoor(DOOR_OPEN_1 | DOOR_COPY_BACK);
5065   }
5066
5067   return result;
5068 }
5069
5070 static int RequestEnvelope(char *text, unsigned int req_state)
5071 {
5072   int draw_buffer_last = GetDrawtoField();
5073   int result;
5074
5075   DrawEnvelopeRequest(text, req_state);
5076   ShowEnvelopeRequest(text, req_state, ACTION_OPENING);
5077
5078   // ---------- handle request buttons ----------
5079   result = RequestHandleEvents(req_state, draw_buffer_last);
5080
5081   UnmapToolButtons();
5082
5083   ShowEnvelopeRequest(text, req_state, ACTION_CLOSING);
5084
5085   return result;
5086 }
5087
5088 int Request(char *text, unsigned int req_state)
5089 {
5090   boolean overlay_enabled = GetOverlayEnabled();
5091   int result;
5092
5093   game.request_active = TRUE;
5094
5095   SetOverlayEnabled(FALSE);
5096
5097   DoRequestBefore();
5098
5099   if (global.use_envelope_request)
5100     result = RequestEnvelope(text, req_state);
5101   else
5102     result = RequestDoor(text, req_state);
5103
5104   DoRequestAfter();
5105
5106   SetOverlayEnabled(overlay_enabled);
5107
5108   game.request_active = FALSE;
5109
5110   return result;
5111 }
5112
5113 static int compareDoorPartOrderInfo(const void *object1, const void *object2)
5114 {
5115   const struct DoorPartOrderInfo *dpo1 = (struct DoorPartOrderInfo *)object1;
5116   const struct DoorPartOrderInfo *dpo2 = (struct DoorPartOrderInfo *)object2;
5117   int compare_result;
5118
5119   if (dpo1->sort_priority != dpo2->sort_priority)
5120     compare_result = dpo1->sort_priority - dpo2->sort_priority;
5121   else
5122     compare_result = dpo1->nr - dpo2->nr;
5123
5124   return compare_result;
5125 }
5126
5127 void InitGraphicCompatibilityInfo_Doors(void)
5128 {
5129   struct
5130   {
5131     int door_token;
5132     int part_1, part_8;
5133     struct DoorInfo *door;
5134   }
5135   doors[] =
5136   {
5137     { DOOR_1,   IMG_GFX_DOOR_1_PART_1,  IMG_GFX_DOOR_1_PART_8,  &door_1 },
5138     { DOOR_2,   IMG_GFX_DOOR_2_PART_1,  IMG_GFX_DOOR_2_PART_8,  &door_2 },
5139
5140     { -1,       -1,                     -1,                     NULL    }
5141   };
5142   struct Rect door_rect_list[] =
5143   {
5144     { DX, DY, DXSIZE, DYSIZE },
5145     { VX, VY, VXSIZE, VYSIZE }
5146   };
5147   int i, j;
5148
5149   for (i = 0; doors[i].door_token != -1; i++)
5150   {
5151     int door_token = doors[i].door_token;
5152     int door_index = DOOR_INDEX_FROM_TOKEN(door_token);
5153     int part_1 = doors[i].part_1;
5154     int part_8 = doors[i].part_8;
5155     int part_2 = part_1 + 1;
5156     int part_3 = part_1 + 2;
5157     struct DoorInfo *door = doors[i].door;
5158     struct Rect *door_rect = &door_rect_list[door_index];
5159     boolean door_gfx_redefined = FALSE;
5160
5161     // check if any door part graphic definitions have been redefined
5162
5163     for (j = 0; door_part_controls[j].door_token != -1; j++)
5164     {
5165       struct DoorPartControlInfo *dpc = &door_part_controls[j];
5166       struct FileInfo *fi = getImageListEntryFromImageID(dpc->graphic);
5167
5168       if (dpc->door_token == door_token && fi->redefined)
5169         door_gfx_redefined = TRUE;
5170     }
5171
5172     // check for old-style door graphic/animation modifications
5173
5174     if (!door_gfx_redefined)
5175     {
5176       if (door->anim_mode & ANIM_STATIC_PANEL)
5177       {
5178         door->panel.step_xoffset = 0;
5179         door->panel.step_yoffset = 0;
5180       }
5181
5182       if (door->anim_mode & (ANIM_HORIZONTAL | ANIM_VERTICAL))
5183       {
5184         struct GraphicInfo *g_part_1 = &graphic_info[part_1];
5185         struct GraphicInfo *g_part_2 = &graphic_info[part_2];
5186         int num_door_steps, num_panel_steps;
5187
5188         // remove door part graphics other than the two default wings
5189
5190         for (j = 0; door_part_controls[j].door_token != -1; j++)
5191         {
5192           struct DoorPartControlInfo *dpc = &door_part_controls[j];
5193           struct GraphicInfo *g = &graphic_info[dpc->graphic];
5194
5195           if (dpc->graphic >= part_3 &&
5196               dpc->graphic <= part_8)
5197             g->bitmap = NULL;
5198         }
5199
5200         // set graphics and screen positions of the default wings
5201
5202         g_part_1->width  = door_rect->width;
5203         g_part_1->height = door_rect->height;
5204         g_part_2->width  = door_rect->width;
5205         g_part_2->height = door_rect->height;
5206         g_part_2->src_x = door_rect->width;
5207         g_part_2->src_y = g_part_1->src_y;
5208
5209         door->part_2.x = door->part_1.x;
5210         door->part_2.y = door->part_1.y;
5211
5212         if (door->width != -1)
5213         {
5214           g_part_1->width = door->width;
5215           g_part_2->width = door->width;
5216
5217           // special treatment for graphics and screen position of right wing
5218           g_part_2->src_x += door_rect->width - door->width;
5219           door->part_2.x  += door_rect->width - door->width;
5220         }
5221
5222         if (door->height != -1)
5223         {
5224           g_part_1->height = door->height;
5225           g_part_2->height = door->height;
5226
5227           // special treatment for graphics and screen position of bottom wing
5228           g_part_2->src_y += door_rect->height - door->height;
5229           door->part_2.y  += door_rect->height - door->height;
5230         }
5231
5232         // set animation delays for the default wings and panels
5233
5234         door->part_1.step_delay = door->step_delay;
5235         door->part_2.step_delay = door->step_delay;
5236         door->panel.step_delay  = door->step_delay;
5237
5238         // set animation draw order for the default wings
5239
5240         door->part_1.sort_priority = 2; // draw left wing over ...
5241         door->part_2.sort_priority = 1; //          ... right wing
5242
5243         // set animation draw offset for the default wings
5244
5245         if (door->anim_mode & ANIM_HORIZONTAL)
5246         {
5247           door->part_1.step_xoffset = door->step_offset;
5248           door->part_1.step_yoffset = 0;
5249           door->part_2.step_xoffset = door->step_offset * -1;
5250           door->part_2.step_yoffset = 0;
5251
5252           num_door_steps = g_part_1->width / door->step_offset;
5253         }
5254         else    // ANIM_VERTICAL
5255         {
5256           door->part_1.step_xoffset = 0;
5257           door->part_1.step_yoffset = door->step_offset;
5258           door->part_2.step_xoffset = 0;
5259           door->part_2.step_yoffset = door->step_offset * -1;
5260
5261           num_door_steps = g_part_1->height / door->step_offset;
5262         }
5263
5264         // set animation draw offset for the default panels
5265
5266         if (door->step_offset > 1)
5267         {
5268           num_panel_steps = 2 * door_rect->height / door->step_offset;
5269           door->panel.start_step = num_panel_steps - num_door_steps;
5270           door->panel.start_step_closing = door->panel.start_step;
5271         }
5272         else
5273         {
5274           num_panel_steps = door_rect->height / door->step_offset;
5275           door->panel.start_step = num_panel_steps - num_door_steps / 2;
5276           door->panel.start_step_closing = door->panel.start_step;
5277           door->panel.step_delay *= 2;
5278         }
5279       }
5280     }
5281   }
5282 }
5283
5284 void InitDoors(void)
5285 {
5286   int i;
5287
5288   for (i = 0; door_part_controls[i].door_token != -1; i++)
5289   {
5290     struct DoorPartControlInfo *dpc = &door_part_controls[i];
5291     struct DoorPartOrderInfo *dpo = &door_part_order[i];
5292
5293     // initialize "start_step_opening" and "start_step_closing", if needed
5294     if (dpc->pos->start_step_opening == 0 &&
5295         dpc->pos->start_step_closing == 0)
5296     {
5297       // dpc->pos->start_step_opening = dpc->pos->start_step;
5298       dpc->pos->start_step_closing = dpc->pos->start_step;
5299     }
5300
5301     // fill structure for door part draw order (sorted below)
5302     dpo->nr = i;
5303     dpo->sort_priority = dpc->pos->sort_priority;
5304   }
5305
5306   // sort door part controls according to sort_priority and graphic number
5307   qsort(door_part_order, MAX_DOOR_PARTS,
5308         sizeof(struct DoorPartOrderInfo), compareDoorPartOrderInfo);
5309 }
5310
5311 unsigned int OpenDoor(unsigned int door_state)
5312 {
5313   if (door_state & DOOR_COPY_BACK)
5314   {
5315     if (door_state & DOOR_OPEN_1)
5316       BlitBitmap(bitmap_db_door_1, bitmap_db_door_1,
5317                  1 * DXSIZE, 0, DXSIZE, DYSIZE, 0 * DXSIZE, 0);
5318
5319     if (door_state & DOOR_OPEN_2)
5320       BlitBitmap(bitmap_db_door_2, bitmap_db_door_2,
5321                  1 * VXSIZE, 0, VXSIZE, VYSIZE, 0 * VXSIZE, 0);
5322
5323     door_state &= ~DOOR_COPY_BACK;
5324   }
5325
5326   return MoveDoor(door_state);
5327 }
5328
5329 unsigned int CloseDoor(unsigned int door_state)
5330 {
5331   unsigned int old_door_state = GetDoorState();
5332
5333   if (!(door_state & DOOR_NO_COPY_BACK))
5334   {
5335     if (old_door_state & DOOR_OPEN_1)
5336       BlitBitmap(backbuffer, bitmap_db_door_1,
5337                  DX, DY, DXSIZE, DYSIZE, 0, 0);
5338
5339     if (old_door_state & DOOR_OPEN_2)
5340       BlitBitmap(backbuffer, bitmap_db_door_2,
5341                  VX, VY, VXSIZE, VYSIZE, 0, 0);
5342
5343     door_state &= ~DOOR_NO_COPY_BACK;
5344   }
5345
5346   return MoveDoor(door_state);
5347 }
5348
5349 unsigned int GetDoorState(void)
5350 {
5351   return MoveDoor(DOOR_GET_STATE);
5352 }
5353
5354 unsigned int SetDoorState(unsigned int door_state)
5355 {
5356   return MoveDoor(door_state | DOOR_SET_STATE);
5357 }
5358
5359 static int euclid(int a, int b)
5360 {
5361   return (b ? euclid(b, a % b) : a);
5362 }
5363
5364 unsigned int MoveDoor(unsigned int door_state)
5365 {
5366   struct Rect door_rect_list[] =
5367   {
5368     { DX, DY, DXSIZE, DYSIZE },
5369     { VX, VY, VXSIZE, VYSIZE }
5370   };
5371   static int door1 = DOOR_CLOSE_1;
5372   static int door2 = DOOR_CLOSE_2;
5373   DelayCounter door_delay = { 0 };
5374   int i;
5375
5376   if (door_state == DOOR_GET_STATE)
5377     return (door1 | door2);
5378
5379   if (door_state & DOOR_SET_STATE)
5380   {
5381     if (door_state & DOOR_ACTION_1)
5382       door1 = door_state & DOOR_ACTION_1;
5383     if (door_state & DOOR_ACTION_2)
5384       door2 = door_state & DOOR_ACTION_2;
5385
5386     return (door1 | door2);
5387   }
5388
5389   if (!(door_state & DOOR_FORCE_REDRAW))
5390   {
5391     if (door1 == DOOR_OPEN_1 && door_state & DOOR_OPEN_1)
5392       door_state &= ~DOOR_OPEN_1;
5393     else if (door1 == DOOR_CLOSE_1 && door_state & DOOR_CLOSE_1)
5394       door_state &= ~DOOR_CLOSE_1;
5395     if (door2 == DOOR_OPEN_2 && door_state & DOOR_OPEN_2)
5396       door_state &= ~DOOR_OPEN_2;
5397     else if (door2 == DOOR_CLOSE_2 && door_state & DOOR_CLOSE_2)
5398       door_state &= ~DOOR_CLOSE_2;
5399   }
5400
5401   if (global.autoplay_leveldir)
5402   {
5403     door_state |= DOOR_NO_DELAY;
5404     door_state &= ~DOOR_CLOSE_ALL;
5405   }
5406
5407   if (game_status == GAME_MODE_EDITOR && !(door_state & DOOR_FORCE_ANIM))
5408     door_state |= DOOR_NO_DELAY;
5409
5410   if (door_state & DOOR_ACTION)
5411   {
5412     boolean game_ended = (game_status == GAME_MODE_PLAYING && checkGameEnded());
5413     boolean door_panel_drawn[NUM_DOORS];
5414     boolean panel_has_doors[NUM_DOORS];
5415     boolean door_part_skip[MAX_DOOR_PARTS];
5416     boolean door_part_done[MAX_DOOR_PARTS];
5417     boolean door_part_done_all;
5418     int num_steps[MAX_DOOR_PARTS];
5419     int max_move_delay = 0;     // delay for complete animations of all doors
5420     int max_step_delay = 0;     // delay (ms) between two animation frames
5421     int num_move_steps = 0;     // number of animation steps for all doors
5422     int max_move_delay_doors_only = 0;  // delay for doors only (no panel)
5423     int num_move_steps_doors_only = 0;  // steps for doors only (no panel)
5424     int start = 0;
5425     int k;
5426
5427     for (i = 0; i < NUM_DOORS; i++)
5428       panel_has_doors[i] = FALSE;
5429
5430     for (i = 0; i < MAX_DOOR_PARTS; i++)
5431     {
5432       struct DoorPartControlInfo *dpc = &door_part_controls[i];
5433       struct GraphicInfo *g = &graphic_info[dpc->graphic];
5434       int door_token = dpc->door_token;
5435
5436       door_part_done[i] = FALSE;
5437       door_part_skip[i] = (!(door_state & door_token) ||
5438                            !g->bitmap);
5439     }
5440
5441     for (i = 0; i < MAX_DOOR_PARTS; i++)
5442     {
5443       int nr = door_part_order[i].nr;
5444       struct DoorPartControlInfo *dpc = &door_part_controls[nr];
5445       struct DoorPartPosInfo *pos = dpc->pos;
5446       struct GraphicInfo *g = &graphic_info[dpc->graphic];
5447       int door_token = dpc->door_token;
5448       int door_index = DOOR_INDEX_FROM_TOKEN(door_token);
5449       boolean is_panel = DOOR_PART_IS_PANEL(nr);
5450       int step_xoffset = ABS(pos->step_xoffset);
5451       int step_yoffset = ABS(pos->step_yoffset);
5452       int step_delay = pos->step_delay;
5453       int current_door_state = door_state & door_token;
5454       boolean door_opening = ((current_door_state & DOOR_OPEN)  != 0);
5455       boolean door_closing = ((current_door_state & DOOR_CLOSE) != 0);
5456       boolean part_opening = (is_panel ? door_closing : door_opening);
5457       int start_step = (part_opening ? pos->start_step_opening :
5458                         pos->start_step_closing);
5459       float move_xsize = (step_xoffset ? g->width  : 0);
5460       float move_ysize = (step_yoffset ? g->height : 0);
5461       int move_xsteps = (step_xoffset ? ceil(move_xsize / step_xoffset) : 0);
5462       int move_ysteps = (step_yoffset ? ceil(move_ysize / step_yoffset) : 0);
5463       int move_steps = (move_xsteps && move_ysteps ?
5464                         MIN(move_xsteps, move_ysteps) :
5465                         move_xsteps ? move_xsteps : move_ysteps) - start_step;
5466       int move_delay = move_steps * step_delay;
5467
5468       if (door_part_skip[nr])
5469         continue;
5470
5471       max_move_delay = MAX(max_move_delay, move_delay);
5472       max_step_delay = (max_step_delay == 0 ? step_delay :
5473                         euclid(max_step_delay, step_delay));
5474       num_steps[nr] = move_steps;
5475
5476       if (!is_panel)
5477       {
5478         max_move_delay_doors_only = MAX(max_move_delay_doors_only, move_delay);
5479
5480         panel_has_doors[door_index] = TRUE;
5481       }
5482     }
5483
5484     max_step_delay = MAX(1, max_step_delay);    // prevent division by zero
5485
5486     num_move_steps = max_move_delay / max_step_delay;
5487     num_move_steps_doors_only = max_move_delay_doors_only / max_step_delay;
5488
5489     door_delay.value = max_step_delay;
5490
5491     if ((door_state & DOOR_NO_DELAY) || setup.quick_doors)
5492     {
5493       start = num_move_steps - 1;
5494     }
5495     else
5496     {
5497       // opening door sound has priority over simultaneously closing door
5498       if (door_state & (DOOR_OPEN_1 | DOOR_OPEN_2))
5499       {
5500         PlayMenuSoundStereo(SND_DOOR_OPENING, SOUND_MIDDLE);
5501
5502         if (door_state & DOOR_OPEN_1)
5503           PlayMenuSoundStereo(SND_DOOR_1_OPENING, SOUND_MIDDLE);
5504         if (door_state & DOOR_OPEN_2)
5505           PlayMenuSoundStereo(SND_DOOR_2_OPENING, SOUND_MIDDLE);
5506       }
5507       else if (door_state & (DOOR_CLOSE_1 | DOOR_CLOSE_2))
5508       {
5509         PlayMenuSoundStereo(SND_DOOR_CLOSING, SOUND_MIDDLE);
5510
5511         if (door_state & DOOR_CLOSE_1)
5512           PlayMenuSoundStereo(SND_DOOR_1_CLOSING, SOUND_MIDDLE);
5513         if (door_state & DOOR_CLOSE_2)
5514           PlayMenuSoundStereo(SND_DOOR_2_CLOSING, SOUND_MIDDLE);
5515       }
5516     }
5517
5518     SetDoorBackgroundImage(IMG_BACKGROUND_DOOR);
5519
5520     game.any_door_active = TRUE;
5521
5522     for (k = start; k < num_move_steps; k++)
5523     {
5524       int last_frame = num_move_steps - 1;      // last frame of this "for" loop
5525
5526       door_part_done_all = TRUE;
5527
5528       for (i = 0; i < NUM_DOORS; i++)
5529         door_panel_drawn[i] = FALSE;
5530
5531       for (i = 0; i < MAX_DOOR_PARTS; i++)
5532       {
5533         int nr = door_part_order[i].nr;
5534         struct DoorPartControlInfo *dpc = &door_part_controls[nr];
5535         struct DoorPartPosInfo *pos = dpc->pos;
5536         struct GraphicInfo *g = &graphic_info[dpc->graphic];
5537         int door_token = dpc->door_token;
5538         int door_index = DOOR_INDEX_FROM_TOKEN(door_token);
5539         boolean is_panel = DOOR_PART_IS_PANEL(nr);
5540         boolean is_panel_and_door_has_closed = FALSE;
5541         struct Rect *door_rect = &door_rect_list[door_index];
5542         Bitmap *bitmap_db_door = (door_token == DOOR_1 ? bitmap_db_door_1 :
5543                                   bitmap_db_door_2);
5544         Bitmap *bitmap = (is_panel ? bitmap_db_door : g->bitmap);
5545         int current_door_state = door_state & door_token;
5546         boolean door_opening = ((current_door_state & DOOR_OPEN)  != 0);
5547         boolean door_closing = !door_opening;
5548         boolean part_opening = (is_panel ? door_closing : door_opening);
5549         boolean part_closing = !part_opening;
5550         int start_step = (part_opening ? pos->start_step_opening :
5551                           pos->start_step_closing);
5552         int step_delay = pos->step_delay;
5553         int step_factor = step_delay / max_step_delay;
5554         int k1 = (step_factor ? k / step_factor + 1 : k);
5555         int k2 = (part_opening ? k1 + start_step : num_steps[nr] - k1);
5556         int kk = MAX(0, k2);
5557         int g_src_x = 0;
5558         int g_src_y = 0;
5559         int src_x, src_y, src_xx, src_yy;
5560         int dst_x, dst_y, dst_xx, dst_yy;
5561         int width, height;
5562
5563         if (door_part_skip[nr])
5564           continue;
5565
5566         if (!(door_state & door_token))
5567           continue;
5568
5569         if (!g->bitmap)
5570           continue;
5571
5572         if (!is_panel)
5573         {
5574           int k2_door = (door_opening ? k : num_move_steps_doors_only - k - 1);
5575           int kk_door = MAX(0, k2_door);
5576           int sync_frame = kk_door * door_delay.value;
5577           int frame = getGraphicAnimationFrame(dpc->graphic, sync_frame);
5578
5579           getFixedGraphicSource(dpc->graphic, frame, &bitmap,
5580                                 &g_src_x, &g_src_y);
5581         }
5582
5583         // draw door panel
5584
5585         if (!door_panel_drawn[door_index])
5586         {
5587           ClearRectangleOnBackground(drawto, door_rect->x, door_rect->y,
5588                                      door_rect->width, door_rect->height);
5589
5590           door_panel_drawn[door_index] = TRUE;
5591         }
5592
5593         // draw opening or closing door parts
5594
5595         if (pos->step_xoffset < 0)      // door part on right side
5596         {
5597           src_xx = 0;
5598           dst_xx = pos->x + ABS(kk * pos->step_xoffset);
5599           width = g->width;
5600
5601           if (dst_xx + width > door_rect->width)
5602             width = door_rect->width - dst_xx;
5603         }
5604         else                            // door part on left side
5605         {
5606           src_xx = 0;
5607           dst_xx = pos->x - kk * pos->step_xoffset;
5608
5609           if (dst_xx < 0)
5610           {
5611             src_xx = ABS(dst_xx);
5612             dst_xx = 0;
5613           }
5614
5615           width = g->width - src_xx;
5616
5617           if (width > door_rect->width)
5618             width = door_rect->width;
5619
5620           // Debug("tools:MoveDoor", "k == %d [%d]", k, start_step);
5621         }
5622
5623         if (pos->step_yoffset < 0)      // door part on bottom side
5624         {
5625           src_yy = 0;
5626           dst_yy = pos->y + ABS(kk * pos->step_yoffset);
5627           height = g->height;
5628
5629           if (dst_yy + height > door_rect->height)
5630             height = door_rect->height - dst_yy;
5631         }
5632         else                            // door part on top side
5633         {
5634           src_yy = 0;
5635           dst_yy = pos->y - kk * pos->step_yoffset;
5636
5637           if (dst_yy < 0)
5638           {
5639             src_yy = ABS(dst_yy);
5640             dst_yy = 0;
5641           }
5642
5643           height = g->height - src_yy;
5644         }
5645
5646         src_x = g_src_x + src_xx;
5647         src_y = g_src_y + src_yy;
5648
5649         dst_x = door_rect->x + dst_xx;
5650         dst_y = door_rect->y + dst_yy;
5651
5652         is_panel_and_door_has_closed =
5653           (is_panel &&
5654            door_closing &&
5655            panel_has_doors[door_index] &&
5656            k >= num_move_steps_doors_only - 1);
5657
5658         if (width  >= 0 && width  <= g->width &&
5659             height >= 0 && height <= g->height &&
5660             !is_panel_and_door_has_closed)
5661         {
5662           if (is_panel || !pos->draw_masked)
5663             BlitBitmap(bitmap, drawto, src_x, src_y, width, height,
5664                        dst_x, dst_y);
5665           else
5666             BlitBitmapMasked(bitmap, drawto, src_x, src_y, width, height,
5667                              dst_x, dst_y);
5668         }
5669
5670         redraw_mask |= REDRAW_DOOR_FROM_TOKEN(door_token);
5671
5672         if ((part_opening && (width < 0         || height < 0)) ||
5673             (part_closing && (width >= g->width && height >= g->height)))
5674           door_part_done[nr] = TRUE;
5675
5676         // continue door part animations, but not panel after door has closed
5677         if (!door_part_done[nr] && !is_panel_and_door_has_closed)
5678           door_part_done_all = FALSE;
5679       }
5680
5681       if (!(door_state & DOOR_NO_DELAY))
5682       {
5683         if (game_ended)
5684           HandleGameActions();
5685
5686         BackToFront();
5687
5688         SkipUntilDelayReached(&door_delay, &k, last_frame);
5689
5690         // prevent OS (Windows) from complaining about program not responding
5691         CheckQuitEvent();
5692       }
5693
5694       if (door_part_done_all)
5695         break;
5696     }
5697
5698     if (!(door_state & DOOR_NO_DELAY))
5699     {
5700       // wait for specified door action post delay
5701       if (door_state & DOOR_ACTION_1 && door_state & DOOR_ACTION_2)
5702         door_delay.value = MAX(door_1.post_delay, door_2.post_delay);
5703       else if (door_state & DOOR_ACTION_1)
5704         door_delay.value = door_1.post_delay;
5705       else if (door_state & DOOR_ACTION_2)
5706         door_delay.value = door_2.post_delay;
5707
5708       while (!DelayReached(&door_delay))
5709       {
5710         if (game_ended)
5711           HandleGameActions();
5712
5713         BackToFront();
5714       }
5715     }
5716
5717     game.any_door_active = FALSE;
5718   }
5719
5720   if (door_state & DOOR_ACTION_1)
5721     door1 = door_state & DOOR_ACTION_1;
5722   if (door_state & DOOR_ACTION_2)
5723     door2 = door_state & DOOR_ACTION_2;
5724
5725   // draw masked border over door area
5726   DrawMaskedBorder(REDRAW_DOOR_1);
5727   DrawMaskedBorder(REDRAW_DOOR_2);
5728
5729   ClearAutoRepeatKeyEvents();
5730
5731   return (door1 | door2);
5732 }
5733
5734 static boolean useSpecialEditorDoor(void)
5735 {
5736   int graphic = IMG_GLOBAL_BORDER_EDITOR;
5737   boolean redefined = getImageListEntryFromImageID(graphic)->redefined;
5738
5739   // do not draw special editor door if editor border defined or redefined
5740   if (graphic_info[graphic].bitmap != NULL || redefined)
5741     return FALSE;
5742
5743   // do not draw special editor door if global border defined to be empty
5744   if (graphic_info[IMG_GLOBAL_BORDER].bitmap == NULL)
5745     return FALSE;
5746
5747   // do not draw special editor door if viewport definitions do not match
5748   if (EX != VX ||
5749       EY >= VY ||
5750       EXSIZE != VXSIZE ||
5751       EY + EYSIZE != VY + VYSIZE)
5752     return FALSE;
5753
5754   return TRUE;
5755 }
5756
5757 void DrawSpecialEditorDoor(void)
5758 {
5759   struct GraphicInfo *gfx1 = &graphic_info[IMG_DOOR_2_TOP_BORDER_CORRECTION];
5760   int top_border_width = gfx1->width;
5761   int top_border_height = gfx1->height;
5762   int outer_border = viewport.door_2[GAME_MODE_EDITOR].border_size;
5763   int ex = EX - outer_border;
5764   int ey = EY - outer_border;
5765   int vy = VY - outer_border;
5766   int exsize = EXSIZE + 2 * outer_border;
5767
5768   if (!useSpecialEditorDoor())
5769     return;
5770
5771   // draw bigger level editor toolbox window
5772   BlitBitmap(gfx1->bitmap, drawto, gfx1->src_x, gfx1->src_y,
5773              top_border_width, top_border_height, ex, ey - top_border_height);
5774   BlitBitmap(graphic_info[IMG_GLOBAL_BORDER].bitmap, drawto, ex, vy,
5775              exsize, EYSIZE - VYSIZE + outer_border, ex, ey);
5776
5777   redraw_mask |= REDRAW_ALL;
5778 }
5779
5780 void UndrawSpecialEditorDoor(void)
5781 {
5782   struct GraphicInfo *gfx1 = &graphic_info[IMG_DOOR_2_TOP_BORDER_CORRECTION];
5783   int top_border_width = gfx1->width;
5784   int top_border_height = gfx1->height;
5785   int outer_border = viewport.door_2[GAME_MODE_EDITOR].border_size;
5786   int ex = EX - outer_border;
5787   int ey = EY - outer_border;
5788   int ey_top = ey - top_border_height;
5789   int exsize = EXSIZE + 2 * outer_border;
5790   int eysize = EYSIZE + 2 * outer_border;
5791
5792   if (!useSpecialEditorDoor())
5793     return;
5794
5795   // draw normal tape recorder window
5796   if (graphic_info[IMG_GLOBAL_BORDER].bitmap)
5797   {
5798     BlitBitmap(graphic_info[IMG_GLOBAL_BORDER].bitmap, drawto,
5799                ex, ey_top, top_border_width, top_border_height,
5800                ex, ey_top);
5801     BlitBitmap(graphic_info[IMG_GLOBAL_BORDER].bitmap, drawto,
5802                ex, ey, exsize, eysize, ex, ey);
5803   }
5804   else
5805   {
5806     // if screen background is set to "[NONE]", clear editor toolbox window
5807     ClearRectangle(drawto, ex, ey_top, top_border_width, top_border_height);
5808     ClearRectangle(drawto, ex, ey, exsize, eysize);
5809   }
5810
5811   redraw_mask |= REDRAW_ALL;
5812 }
5813
5814
5815 // ---------- new tool button stuff -------------------------------------------
5816
5817 static struct
5818 {
5819   int graphic;
5820   struct TextPosInfo *pos;
5821   int gadget_id;
5822   boolean is_touch_button;
5823   char *infotext;
5824 } toolbutton_info[NUM_TOOL_BUTTONS] =
5825 {
5826   {
5827     IMG_GFX_REQUEST_BUTTON_YES,         &request.button.yes,
5828     TOOL_CTRL_ID_YES, FALSE,            "yes"
5829   },
5830   {
5831     IMG_GFX_REQUEST_BUTTON_NO,          &request.button.no,
5832     TOOL_CTRL_ID_NO, FALSE,             "no"
5833   },
5834   {
5835     IMG_GFX_REQUEST_BUTTON_CONFIRM,     &request.button.confirm,
5836     TOOL_CTRL_ID_CONFIRM, FALSE,        "confirm"
5837   },
5838   {
5839     IMG_GFX_REQUEST_BUTTON_PLAYER_1,    &request.button.player_1,
5840     TOOL_CTRL_ID_PLAYER_1, FALSE,       "player 1"
5841   },
5842   {
5843     IMG_GFX_REQUEST_BUTTON_PLAYER_2,    &request.button.player_2,
5844     TOOL_CTRL_ID_PLAYER_2, FALSE,       "player 2"
5845   },
5846   {
5847     IMG_GFX_REQUEST_BUTTON_PLAYER_3,    &request.button.player_3,
5848     TOOL_CTRL_ID_PLAYER_3, FALSE,       "player 3"
5849   },
5850   {
5851     IMG_GFX_REQUEST_BUTTON_PLAYER_4,    &request.button.player_4,
5852     TOOL_CTRL_ID_PLAYER_4, FALSE,       "player 4"
5853   },
5854   {
5855     IMG_GFX_REQUEST_BUTTON_TOUCH_YES,   &request.button.touch_yes,
5856     TOOL_CTRL_ID_TOUCH_YES, TRUE,       "yes"
5857   },
5858   {
5859     IMG_GFX_REQUEST_BUTTON_TOUCH_NO,    &request.button.touch_no,
5860     TOOL_CTRL_ID_TOUCH_NO, TRUE,        "no"
5861   },
5862   {
5863     IMG_GFX_REQUEST_BUTTON_TOUCH_CONFIRM, &request.button.touch_confirm,
5864     TOOL_CTRL_ID_TOUCH_CONFIRM, TRUE,   "confirm"
5865   }
5866 };
5867
5868 void CreateToolButtons(void)
5869 {
5870   int i;
5871
5872   for (i = 0; i < NUM_TOOL_BUTTONS; i++)
5873   {
5874     int graphic = toolbutton_info[i].graphic;
5875     struct GraphicInfo *gfx = &graphic_info[graphic];
5876     struct TextPosInfo *pos = toolbutton_info[i].pos;
5877     struct GadgetInfo *gi;
5878     Bitmap *deco_bitmap = None;
5879     int deco_x = 0, deco_y = 0, deco_xpos = 0, deco_ypos = 0;
5880     unsigned int event_mask = GD_EVENT_RELEASED;
5881     boolean is_touch_button = toolbutton_info[i].is_touch_button;
5882     int base_x = (is_touch_button ? 0 : DX);
5883     int base_y = (is_touch_button ? 0 : DY);
5884     int gd_x = gfx->src_x;
5885     int gd_y = gfx->src_y;
5886     int gd_xp = gfx->src_x + gfx->pressed_xoffset;
5887     int gd_yp = gfx->src_y + gfx->pressed_yoffset;
5888     int x = pos->x;
5889     int y = pos->y;
5890     int id = i;
5891
5892     // do not use touch buttons if overlay touch buttons are disabled
5893     if (is_touch_button && !setup.touch.overlay_buttons)
5894       continue;
5895
5896     if (global.use_envelope_request && !is_touch_button)
5897     {
5898       setRequestPosition(&base_x, &base_y, TRUE);
5899
5900       // check if request buttons are outside of envelope and fix, if needed
5901       if (x < 0 || x + gfx->width  > request.width ||
5902           y < 0 || y + gfx->height > request.height)
5903       {
5904         if (id == TOOL_CTRL_ID_YES)
5905         {
5906           x = 0;
5907           y = request.height - 2 * request.border_size - gfx->height;
5908         }
5909         else if (id == TOOL_CTRL_ID_NO)
5910         {
5911           x = request.width  - 2 * request.border_size - gfx->width;
5912           y = request.height - 2 * request.border_size - gfx->height;
5913         }
5914         else if (id == TOOL_CTRL_ID_CONFIRM)
5915         {
5916           x = (request.width - 2 * request.border_size - gfx->width) / 2;
5917           y = request.height - 2 * request.border_size - gfx->height;
5918         }
5919         else if (id >= TOOL_CTRL_ID_PLAYER_1 && id <= TOOL_CTRL_ID_PLAYER_4)
5920         {
5921           int player_nr = id - TOOL_CTRL_ID_PLAYER_1;
5922
5923           x = (request.width - 2 * request.border_size - gfx->width) / 2;
5924           y = request.height - 2 * request.border_size - gfx->height * 2;
5925
5926           x += (player_nr == 3 ? -1 : player_nr == 1 ? +1 : 0) * gfx->width;
5927           y += (player_nr == 0 ? -1 : player_nr == 2 ? +1 : 0) * gfx->height;
5928         }
5929       }
5930     }
5931
5932     if (id >= TOOL_CTRL_ID_PLAYER_1 && id <= TOOL_CTRL_ID_PLAYER_4 &&
5933         pos->draw_player)
5934     {
5935       int player_nr = id - TOOL_CTRL_ID_PLAYER_1;
5936
5937       getSizedGraphicSource(PLAYER_NR_GFX(IMG_PLAYER_1, player_nr), 0,
5938                             pos->size, &deco_bitmap, &deco_x, &deco_y);
5939       deco_xpos = (gfx->width  - pos->size) / 2;
5940       deco_ypos = (gfx->height - pos->size) / 2;
5941     }
5942
5943     gi = CreateGadget(GDI_CUSTOM_ID, id,
5944                       GDI_IMAGE_ID, graphic,
5945                       GDI_INFO_TEXT, toolbutton_info[i].infotext,
5946                       GDI_X, base_x + x,
5947                       GDI_Y, base_y + y,
5948                       GDI_WIDTH, gfx->width,
5949                       GDI_HEIGHT, gfx->height,
5950                       GDI_TYPE, GD_TYPE_NORMAL_BUTTON,
5951                       GDI_STATE, GD_BUTTON_UNPRESSED,
5952                       GDI_DESIGN_UNPRESSED, gfx->bitmap, gd_x, gd_y,
5953                       GDI_DESIGN_PRESSED, gfx->bitmap, gd_xp, gd_yp,
5954                       GDI_DECORATION_DESIGN, deco_bitmap, deco_x, deco_y,
5955                       GDI_DECORATION_POSITION, deco_xpos, deco_ypos,
5956                       GDI_DECORATION_SIZE, pos->size, pos->size,
5957                       GDI_DECORATION_SHIFTING, 1, 1,
5958                       GDI_DIRECT_DRAW, FALSE,
5959                       GDI_OVERLAY_TOUCH_BUTTON, is_touch_button,
5960                       GDI_EVENT_MASK, event_mask,
5961                       GDI_CALLBACK_ACTION, HandleToolButtons,
5962                       GDI_END);
5963
5964     if (gi == NULL)
5965       Fail("cannot create gadget");
5966
5967     tool_gadget[id] = gi;
5968   }
5969 }
5970
5971 void FreeToolButtons(void)
5972 {
5973   int i;
5974
5975   for (i = 0; i < NUM_TOOL_BUTTONS; i++)
5976     FreeGadget(tool_gadget[i]);
5977 }
5978
5979 static void MapToolButtons(unsigned int req_state)
5980 {
5981   if (req_state & REQ_ASK)
5982   {
5983     MapGadget(tool_gadget[TOOL_CTRL_ID_YES]);
5984     MapGadget(tool_gadget[TOOL_CTRL_ID_NO]);
5985     MapGadget(tool_gadget[TOOL_CTRL_ID_TOUCH_YES]);
5986     MapGadget(tool_gadget[TOOL_CTRL_ID_TOUCH_NO]);
5987   }
5988   else if (req_state & REQ_CONFIRM)
5989   {
5990     MapGadget(tool_gadget[TOOL_CTRL_ID_CONFIRM]);
5991     MapGadget(tool_gadget[TOOL_CTRL_ID_TOUCH_CONFIRM]);
5992   }
5993   else if (req_state & REQ_PLAYER)
5994   {
5995     MapGadget(tool_gadget[TOOL_CTRL_ID_PLAYER_1]);
5996     MapGadget(tool_gadget[TOOL_CTRL_ID_PLAYER_2]);
5997     MapGadget(tool_gadget[TOOL_CTRL_ID_PLAYER_3]);
5998     MapGadget(tool_gadget[TOOL_CTRL_ID_PLAYER_4]);
5999   }
6000 }
6001
6002 static void UnmapToolButtons(void)
6003 {
6004   int i;
6005
6006   for (i = 0; i < NUM_TOOL_BUTTONS; i++)
6007     UnmapGadget(tool_gadget[i]);
6008 }
6009
6010 static void HandleToolButtons(struct GadgetInfo *gi)
6011 {
6012   request_gadget_id = gi->custom_id;
6013 }
6014
6015 static int getEngineElement_Ext(int element, int game_engine_type, boolean is_drawing_element)
6016 {
6017   int el_empty;
6018   int el_player;
6019   int el_sand;
6020   int el_wall;
6021   int el_steelwall;
6022   int el_exit_closed;
6023
6024   if (game_engine_type == -1)
6025     game_engine_type = level.game_engine_type;
6026
6027   if (level.game_engine_type == GAME_ENGINE_TYPE_BD)
6028   {
6029     el_empty            = EL_EMPTY;
6030     el_player           = EL_BD_PLAYER;
6031     el_sand             = EL_BD_SAND;
6032     el_wall             = EL_BD_WALL;
6033     el_steelwall        = EL_BD_STEELWALL;
6034     el_exit_closed      = EL_BD_EXIT_CLOSED;
6035   }
6036   else if (level.game_engine_type == GAME_ENGINE_TYPE_EM)
6037   {
6038     el_empty            = EL_EMPTY;
6039     el_player           = EL_PLAYER_1;
6040     el_sand             = EL_SAND;
6041     el_wall             = EL_WALL;
6042     el_steelwall        = EL_STEELWALL;
6043     el_exit_closed      = EL_EM_EXIT_CLOSED;
6044   }
6045   else if (level.game_engine_type == GAME_ENGINE_TYPE_SP)
6046   {
6047     el_empty            = EL_EMPTY;
6048     el_player           = EL_SP_MURPHY;
6049     el_sand             = EL_SP_BASE;
6050     el_wall             = EL_SP_CHIP_SINGLE;
6051     el_steelwall        = EL_SP_HARDWARE_GRAY;
6052     el_exit_closed      = EL_SP_EXIT_CLOSED;
6053   }
6054   else if (level.game_engine_type == GAME_ENGINE_TYPE_MM)
6055   {
6056     el_empty            = EL_EMPTY;
6057     el_player           = EL_MM_MCDUFFIN_DOWN;
6058     el_sand             = EL_EMPTY;
6059     el_wall             = EL_MM_WOODEN_WALL;
6060     el_steelwall        = EL_MM_STEEL_WALL;
6061     el_exit_closed      = EL_MM_EXIT_CLOSED;
6062
6063     if (is_drawing_element)
6064     {
6065       el_wall           = EL_MM_MIRROR_START;
6066       el_sand           = EL_MM_WOODEN_WALL;
6067     }
6068   }
6069   else
6070   {
6071     el_empty            = EL_EMPTY;
6072     el_player           = EL_PLAYER_1;
6073     el_sand             = EL_SAND;
6074     el_wall             = EL_WALL;
6075     el_steelwall        = EL_STEELWALL;
6076     el_exit_closed      = EL_EXIT_CLOSED;
6077   }
6078
6079   return (element == EL_EMPTY           ? el_empty :
6080           element == EL_PLAYER_1        ? el_player :
6081           element == EL_SAND            ? el_sand :
6082           element == EL_WALL            ? el_wall :
6083           element == EL_STEELWALL       ? el_steelwall :
6084           element == EL_EXIT_CLOSED     ? el_exit_closed : EL_EMPTY);
6085 }
6086
6087 int getEngineElement(int element)
6088 {
6089   return getEngineElement_Ext(element, -1, FALSE);
6090 }
6091
6092 int getDrawingElement(int element)
6093 {
6094   return getEngineElement_Ext(element, -1, TRUE);
6095 }
6096
6097 static struct Mapping_BD_to_RND_object
6098 {
6099   int element_bd;
6100   boolean is_rnd_to_bd_mapping;         // unique mapping BD <-> RND
6101
6102   int element_rnd;
6103   int action;
6104   int direction;
6105 }
6106 bd_object_mapping_list[] =
6107 {
6108   // additional RND style elements mapped to BD style elements (must be listed first)
6109
6110   {
6111     O_DIRT,                                     TRUE,
6112     EL_SAND,                                    -1, -1
6113   },
6114   {
6115     O_STONE,                                    TRUE,
6116     EL_BD_ROCK,                                 -1, -1
6117   },
6118   {
6119     O_BRICK,                                    TRUE,
6120     EL_BD_WALL,                                 -1, -1
6121   },
6122   {
6123     O_STEEL,                                    TRUE,
6124     EL_STEELWALL,                               -1, -1
6125   },
6126   {
6127     O_DIAMOND,                                  TRUE,
6128     EL_BD_DIAMOND,                              -1, -1
6129   },
6130   {
6131     O_INBOX,                                    TRUE,
6132     EL_PLAYER_1,                                -1, -1
6133   },
6134   {
6135     O_INBOX,                                    TRUE,
6136     EL_PLAYER_2,                                -1, -1
6137   },
6138   {
6139     O_INBOX,                                    TRUE,
6140     EL_PLAYER_3,                                -1, -1
6141   },
6142   {
6143     O_INBOX,                                    TRUE,
6144     EL_PLAYER_4,                                -1, -1
6145   },
6146   {
6147     O_PRE_OUTBOX,                               TRUE,
6148     EL_EXIT_CLOSED,                             -1, -1
6149   },
6150
6151   // BD style elements with their corresponding RND style elements
6152
6153   {
6154     O_SPACE,                                    TRUE,
6155     EL_EMPTY,                                   -1, -1
6156   },
6157   {
6158     O_DIRT,                                     TRUE,
6159     EL_BD_SAND,                                 -1, -1
6160   },
6161   {
6162     O_DIRT_SLOPED_UP_RIGHT,                     TRUE,
6163     EL_BD_SAND_SLOPED_UP_RIGHT,                 -1, -1
6164   },
6165   {
6166     O_DIRT_SLOPED_UP_LEFT,                      TRUE,
6167     EL_BD_SAND_SLOPED_UP_LEFT,                  -1, -1
6168   },
6169   {
6170     O_DIRT_SLOPED_DOWN_LEFT,                    TRUE,
6171     EL_BD_SAND_SLOPED_DOWN_LEFT,                -1, -1
6172   },
6173   {
6174     O_DIRT_SLOPED_DOWN_RIGHT,                   TRUE,
6175     EL_BD_SAND_SLOPED_DOWN_RIGHT,               -1, -1
6176   },
6177   {
6178     O_DIRT_BALL,                                TRUE,
6179     EL_BD_SAND_BALL,                            -1, -1
6180   },
6181   {
6182     O_DIRT_BALL_F,                              TRUE,
6183     EL_BD_SAND_BALL_FALLING,                    -1, -1
6184   },
6185   {
6186     O_DIRT_BALL_F,                              FALSE,
6187     EL_BD_SAND_BALL,                            ACTION_FALLING, -1
6188   },
6189   {
6190     O_DIRT_LOOSE,                               TRUE,
6191     EL_BD_SAND_LOOSE,                           -1, -1
6192   },
6193   {
6194     O_DIRT_LOOSE_F,                             TRUE,
6195     EL_BD_SAND_LOOSE_FALLING,                   -1, -1
6196   },
6197   {
6198     O_DIRT_LOOSE_F,                             FALSE,
6199     EL_BD_SAND_LOOSE,                           ACTION_FALLING, -1
6200   },
6201   {
6202     O_DIRT2,                                    TRUE,
6203     EL_BD_SAND_2,                               -1, -1
6204   },
6205   {
6206     O_BRICK,                                    TRUE,
6207     EL_BD_WALL,                                 -1, -1
6208   },
6209   {
6210     O_BRICK_SLOPED_UP_RIGHT,                    TRUE,
6211     EL_BD_WALL_SLOPED_UP_RIGHT,                 -1, -1
6212   },
6213   {
6214     O_BRICK_SLOPED_UP_LEFT,                     TRUE,
6215     EL_BD_WALL_SLOPED_UP_LEFT,                  -1, -1
6216   },
6217   {
6218     O_BRICK_SLOPED_DOWN_LEFT,                   TRUE,
6219     EL_BD_WALL_SLOPED_DOWN_LEFT,                -1, -1
6220   },
6221   {
6222     O_BRICK_SLOPED_DOWN_RIGHT,                  TRUE,
6223     EL_BD_WALL_SLOPED_DOWN_RIGHT,               -1, -1
6224   },
6225   {
6226     O_BRICK_NON_SLOPED,                         TRUE,
6227     EL_BD_WALL_NON_SLOPED,                      -1, -1
6228   },
6229   {
6230     O_MAGIC_WALL,                               TRUE,
6231     EL_BD_MAGIC_WALL,                           ACTION_ACTIVE, -1
6232   },
6233   {
6234     O_PRE_OUTBOX,                               TRUE,
6235     EL_BD_EXIT_CLOSED,                          -1, -1
6236   },
6237   {
6238     O_OUTBOX,                                   TRUE,
6239     EL_BD_EXIT_OPEN,                            -1, -1
6240   },
6241   {
6242     O_PRE_INVIS_OUTBOX,                         TRUE,
6243     EL_BD_INVISIBLE_EXIT_CLOSED,                -1, -1
6244   },
6245   {
6246     O_INVIS_OUTBOX,                             TRUE,
6247     EL_BD_INVISIBLE_EXIT_OPEN,                  -1, -1
6248   },
6249   {
6250     O_STEEL,                                    TRUE,
6251     EL_BD_STEELWALL,                            -1, -1
6252   },
6253   {
6254     O_STEEL_SLOPED_UP_RIGHT,                    TRUE,
6255     EL_BD_STEELWALL_SLOPED_UP_RIGHT,            -1, -1
6256   },
6257   {
6258     O_STEEL_SLOPED_UP_LEFT,                     TRUE,
6259     EL_BD_STEELWALL_SLOPED_UP_LEFT,             -1, -1
6260   },
6261   {
6262     O_STEEL_SLOPED_DOWN_LEFT,                   TRUE,
6263     EL_BD_STEELWALL_SLOPED_DOWN_LEFT,           -1, -1
6264   },
6265   {
6266     O_STEEL_SLOPED_DOWN_RIGHT,                  TRUE,
6267     EL_BD_STEELWALL_SLOPED_DOWN_RIGHT,          -1, -1
6268   },
6269   {
6270     O_STEEL_EXPLODABLE,                         TRUE,
6271     EL_BD_STEELWALL_EXPLODABLE,                 -1, -1
6272   },
6273   {
6274     O_STEEL_EATABLE,                            TRUE,
6275     EL_BD_STEELWALL_DIGGABLE,                   -1, -1
6276   },
6277   {
6278     O_BRICK_EATABLE,                            TRUE,
6279     EL_BD_WALL_DIGGABLE,                        -1, -1
6280   },
6281   {
6282     O_STONE,                                    TRUE,
6283     EL_BD_ROCK,                                 -1, -1
6284   },
6285   {
6286     O_STONE_F,                                  TRUE,
6287     EL_BD_ROCK_FALLING,                         -1, -1
6288   },
6289   {
6290     O_STONE_F,                                  FALSE,
6291     EL_BD_ROCK,                                 ACTION_FALLING, -1
6292   },
6293   {
6294     O_FLYING_STONE,                             TRUE,
6295     EL_BD_FLYING_ROCK,                          -1, -1
6296   },
6297   {
6298     O_FLYING_STONE_F,                           TRUE,
6299     EL_BD_FLYING_ROCK_FLYING,                   -1, -1
6300   },
6301   {
6302     O_FLYING_STONE_F,                           FALSE,
6303     EL_BD_FLYING_ROCK,                          ACTION_FLYING, -1
6304   },
6305   {
6306     O_MEGA_STONE,                               TRUE,
6307     EL_BD_MEGA_ROCK,                            -1, -1
6308   },
6309   {
6310     O_MEGA_STONE_F,                             TRUE,
6311     EL_BD_MEGA_ROCK_FALLING,                    -1, -1
6312   },
6313   {
6314     O_MEGA_STONE_F,                             FALSE,
6315     EL_BD_MEGA_ROCK,                            ACTION_FALLING, -1
6316   },
6317   {
6318     O_DIAMOND,                                  TRUE,
6319     EL_BD_DIAMOND,                              -1, -1
6320   },
6321   {
6322     O_DIAMOND_F,                                TRUE,
6323     EL_BD_DIAMOND_FALLING,                      -1, -1
6324   },
6325   {
6326     O_DIAMOND_F,                                FALSE,
6327     EL_BD_DIAMOND,                              ACTION_FALLING, -1
6328   },
6329   {
6330     O_FLYING_DIAMOND,                           TRUE,
6331     EL_BD_FLYING_DIAMOND,                       -1, -1
6332   },
6333   {
6334     O_FLYING_DIAMOND_F,                         TRUE,
6335     EL_BD_FLYING_DIAMOND_FLYING,                -1, -1
6336   },
6337   {
6338     O_FLYING_DIAMOND_F,                         FALSE,
6339     EL_BD_FLYING_DIAMOND,                       ACTION_FLYING, -1
6340   },
6341   {
6342     O_NUT,                                      TRUE,
6343     EL_BD_NUT,                                  -1, -1
6344   },
6345   {
6346     O_NUT_F,                                    TRUE,
6347     EL_BD_NUT_FALLING,                          -1, -1
6348   },
6349   {
6350     O_NUT_F,                                    FALSE,
6351     EL_BD_NUT,                                  ACTION_FALLING, -1
6352   },
6353   {
6354     O_BLADDER_SPENDER,                          TRUE,
6355     EL_BD_BLADDER_SPENDER,                      -1, -1
6356   },
6357   {
6358     O_INBOX,                                    TRUE,
6359     EL_BD_INBOX,                                -1, -1
6360   },
6361   {
6362     O_H_EXPANDING_WALL,                         TRUE,
6363     EL_BD_EXPANDABLE_WALL_HORIZONTAL,           -1, -1
6364   },
6365   {
6366     O_V_EXPANDING_WALL,                         TRUE,
6367     EL_BD_EXPANDABLE_WALL_VERTICAL,             -1, -1
6368   },
6369   {
6370     O_EXPANDING_WALL,                           TRUE,
6371     EL_BD_EXPANDABLE_WALL_ANY,                  -1, -1
6372   },
6373   {
6374     O_H_EXPANDING_STEEL_WALL,                   TRUE,
6375     EL_BD_EXPANDABLE_STEELWALL_HORIZONTAL,      -1, -1
6376   },
6377   {
6378     O_V_EXPANDING_STEEL_WALL,                   TRUE,
6379     EL_BD_EXPANDABLE_STEELWALL_VERTICAL,        -1, -1
6380   },
6381   {
6382     O_EXPANDING_STEEL_WALL,                     TRUE,
6383     EL_BD_EXPANDABLE_STEELWALL_ANY,             -1, -1
6384   },
6385   {
6386     O_EXPANDING_WALL_SWITCH,                    TRUE,
6387     EL_BD_EXPANDABLE_WALL_SWITCH,               -1, -1
6388   },
6389   {
6390     O_CREATURE_SWITCH,                          TRUE,
6391     EL_BD_CREATURE_SWITCH,                      -1, -1
6392   },
6393   {
6394     O_BITER_SWITCH,                             TRUE,
6395     EL_BD_BITER_SWITCH_1,                       -1, -1
6396   },
6397   {
6398     O_REPLICATOR_SWITCH,                        TRUE,
6399     EL_BD_REPLICATOR_SWITCH,                    -1, -1
6400   },
6401   {
6402     O_CONVEYOR_SWITCH,                          TRUE,
6403     EL_BD_CONVEYOR_SWITCH,                      -1, -1
6404   },
6405   {
6406     O_CONVEYOR_DIR_SWITCH,                      TRUE,
6407     EL_BD_CONVEYOR_DIR_SWITCH,                  -1, -1
6408   },
6409   {
6410     O_ACID,                                     TRUE,
6411     EL_BD_ACID,                                 -1, -1
6412   },
6413   {
6414     O_FALLING_WALL,                             TRUE,
6415     EL_BD_FALLING_WALL,                         -1, -1
6416   },
6417   {
6418     O_FALLING_WALL_F,                           TRUE,
6419     EL_BD_FALLING_WALL_FALLING,                 -1, -1
6420   },
6421   {
6422     O_FALLING_WALL_F,                           FALSE,
6423     EL_BD_FALLING_WALL,                         ACTION_FALLING, -1
6424   },
6425   {
6426     O_BOX,                                      TRUE,
6427     EL_BD_BOX,                                  -1, -1
6428   },
6429   {
6430     O_TIME_PENALTY,                             TRUE,
6431     EL_BD_TIME_PENALTY,                         -1, -1
6432   },
6433   {
6434     O_GRAVESTONE,                               TRUE,
6435     EL_BD_GRAVESTONE,                           -1, -1
6436   },
6437   {
6438     O_STONE_GLUED,                              TRUE,
6439     EL_BD_ROCK_GLUED,                           -1, -1
6440   },
6441   {
6442     O_DIAMOND_GLUED,                            TRUE,
6443     EL_BD_DIAMOND_GLUED,                        -1, -1
6444   },
6445   {
6446     O_DIAMOND_KEY,                              TRUE,
6447     EL_BD_DIAMOND_KEY,                          -1, -1
6448   },
6449   {
6450     O_TRAPPED_DIAMOND,                          TRUE,
6451     EL_BD_TRAPPED_DIAMOND,                      -1, -1
6452   },
6453   {
6454     O_CLOCK,                                    TRUE,
6455     EL_BD_CLOCK,                                -1, -1
6456   },
6457   {
6458     O_DIRT_GLUED,                               TRUE,
6459     EL_BD_SAND_GLUED,                           -1, -1
6460   },
6461   {
6462     O_KEY_1,                                    TRUE,
6463     EL_BD_KEY_1,                                -1, -1
6464   },
6465   {
6466     O_KEY_2,                                    TRUE,
6467     EL_BD_KEY_2,                                -1, -1
6468   },
6469   {
6470     O_KEY_3,                                    TRUE,
6471     EL_BD_KEY_3,                                -1, -1
6472   },
6473   {
6474     O_DOOR_1,                                   TRUE,
6475     EL_BD_GATE_1,                               -1, -1
6476   },
6477   {
6478     O_DOOR_2,                                   TRUE,
6479     EL_BD_GATE_2,                               -1, -1
6480   },
6481   {
6482     O_DOOR_3,                                   TRUE,
6483     EL_BD_GATE_3,                               -1, -1
6484   },
6485   {
6486     O_POT,                                      TRUE,
6487     EL_BD_POT,                                  -1, -1
6488   },
6489   {
6490     O_GRAVITY_SWITCH,                           TRUE,
6491     EL_BD_GRAVITY_SWITCH,                       -1, -1
6492   },
6493   {
6494     O_PNEUMATIC_HAMMER,                         TRUE,
6495     EL_BD_PNEUMATIC_HAMMER,                     -1, -1
6496   },
6497   {
6498     O_TELEPORTER,                               TRUE,
6499     EL_BD_TELEPORTER,                           -1, -1
6500   },
6501   {
6502     O_SKELETON,                                 TRUE,
6503     EL_BD_SKELETON,                             -1, -1
6504   },
6505   {
6506     O_WATER,                                    TRUE,
6507     EL_BD_WATER,                                -1, -1
6508   },
6509   {
6510     O_WATER_1,                                  TRUE,
6511     EL_BD_WATER_1,                              -1, -1
6512   },
6513   {
6514     O_WATER_1,                                  FALSE,
6515     EL_BD_WATER,                                -1, -1
6516   },
6517   {
6518     O_WATER_2,                                  TRUE,
6519     EL_BD_WATER_2,                              -1, -1
6520   },
6521   {
6522     O_WATER_2,                                  FALSE,
6523     EL_BD_WATER,                                -1, -1
6524   },
6525   {
6526     O_WATER_3,                                  TRUE,
6527     EL_BD_WATER_3,                              -1, -1
6528   },
6529   {
6530     O_WATER_3,                                  FALSE,
6531     EL_BD_WATER,                                -1, -1
6532   },
6533   {
6534     O_WATER_4,                                  TRUE,
6535     EL_BD_WATER_4,                              -1, -1
6536   },
6537   {
6538     O_WATER_4,                                  FALSE,
6539     EL_BD_WATER,                                -1, -1
6540   },
6541   {
6542     O_WATER_5,                                  TRUE,
6543     EL_BD_WATER_5,                              -1, -1
6544   },
6545   {
6546     O_WATER_5,                                  FALSE,
6547     EL_BD_WATER,                                -1, -1
6548   },
6549   {
6550     O_WATER_6,                                  TRUE,
6551     EL_BD_WATER_6,                              -1, -1
6552   },
6553   {
6554     O_WATER_6,                                  FALSE,
6555     EL_BD_WATER,                                -1, -1
6556   },
6557   {
6558     O_WATER_7,                                  TRUE,
6559     EL_BD_WATER_7,                              -1, -1
6560   },
6561   {
6562     O_WATER_7,                                  FALSE,
6563     EL_BD_WATER,                                -1, -1
6564   },
6565   {
6566     O_WATER_8,                                  TRUE,
6567     EL_BD_WATER_8,                              -1, -1
6568   },
6569   {
6570     O_WATER_8,                                  FALSE,
6571     EL_BD_WATER,                                -1, -1
6572   },
6573   {
6574     O_WATER_9,                                  TRUE,
6575     EL_BD_WATER_9,                              -1, -1
6576   },
6577   {
6578     O_WATER_9,                                  FALSE,
6579     EL_BD_WATER,                                -1, -1
6580   },
6581   {
6582     O_WATER_10,                                 TRUE,
6583     EL_BD_WATER_10,                             -1, -1
6584   },
6585   {
6586     O_WATER_10,                                 FALSE,
6587     EL_BD_WATER,                                -1, -1
6588   },
6589   {
6590     O_WATER_11,                                 TRUE,
6591     EL_BD_WATER_11,                             -1, -1
6592   },
6593   {
6594     O_WATER_11,                                 FALSE,
6595     EL_BD_WATER,                                -1, -1
6596   },
6597   {
6598     O_WATER_12,                                 TRUE,
6599     EL_BD_WATER_12,                             -1, -1
6600   },
6601   {
6602     O_WATER_12,                                 FALSE,
6603     EL_BD_WATER,                                -1, -1
6604   },
6605   {
6606     O_WATER_13,                                 TRUE,
6607     EL_BD_WATER_13,                             -1, -1
6608   },
6609   {
6610     O_WATER_13,                                 FALSE,
6611     EL_BD_WATER,                                -1, -1
6612   },
6613   {
6614     O_WATER_14,                                 TRUE,
6615     EL_BD_WATER_14,                             -1, -1
6616   },
6617   {
6618     O_WATER_14,                                 FALSE,
6619     EL_BD_WATER,                                -1, -1
6620   },
6621   {
6622     O_WATER_15,                                 TRUE,
6623     EL_BD_WATER_15,                             -1, -1
6624   },
6625   {
6626     O_WATER_15,                                 FALSE,
6627     EL_BD_WATER,                                -1, -1
6628   },
6629   {
6630     O_WATER_16,                                 TRUE,
6631     EL_BD_WATER_16,                             -1, -1
6632   },
6633   {
6634     O_WATER_16,                                 FALSE,
6635     EL_BD_WATER,                                -1, -1
6636   },
6637   {
6638     O_COW_1,                                    TRUE,
6639     EL_BD_COW_LEFT,                             -1, -1
6640   },
6641   {
6642     O_COW_2,                                    TRUE,
6643     EL_BD_COW_UP,                               -1, -1
6644   },
6645   {
6646     O_COW_3,                                    TRUE,
6647     EL_BD_COW_RIGHT,                            -1, -1
6648   },
6649   {
6650     O_COW_4,                                    TRUE,
6651     EL_BD_COW_DOWN,                             -1, -1
6652   },
6653   {
6654     O_COW_ENCLOSED_1,                           TRUE,
6655     EL_BD_COW_ENCLOSED_1,                       -1, -1
6656   },
6657   {
6658     O_COW_ENCLOSED_1,                           FALSE,
6659     EL_BD_COW_DOWN,                             -1, -1
6660   },
6661   {
6662     O_COW_ENCLOSED_2,                           TRUE,
6663     EL_BD_COW_ENCLOSED_2,                       -1, -1
6664   },
6665   {
6666     O_COW_ENCLOSED_2,                           FALSE,
6667     EL_BD_COW_DOWN,                             -1, -1
6668   },
6669   {
6670     O_COW_ENCLOSED_3,                           TRUE,
6671     EL_BD_COW_ENCLOSED_3,                       -1, -1
6672   },
6673   {
6674     O_COW_ENCLOSED_3,                           FALSE,
6675     EL_BD_COW_DOWN,                             -1, -1
6676   },
6677   {
6678     O_COW_ENCLOSED_4,                           TRUE,
6679     EL_BD_COW_ENCLOSED_4,                       -1, -1
6680   },
6681   {
6682     O_COW_ENCLOSED_4,                           FALSE,
6683     EL_BD_COW_DOWN,                             -1, -1
6684   },
6685   {
6686     O_COW_ENCLOSED_5,                           TRUE,
6687     EL_BD_COW_ENCLOSED_5,                       -1, -1
6688   },
6689   {
6690     O_COW_ENCLOSED_5,                           FALSE,
6691     EL_BD_COW_DOWN,                             -1, -1
6692   },
6693   {
6694     O_COW_ENCLOSED_6,                           TRUE,
6695     EL_BD_COW_ENCLOSED_6,                       -1, -1
6696   },
6697   {
6698     O_COW_ENCLOSED_6,                           FALSE,
6699     EL_BD_COW_DOWN,                             -1, -1
6700   },
6701   {
6702     O_COW_ENCLOSED_7,                           TRUE,
6703     EL_BD_COW_ENCLOSED_7,                       -1, -1
6704   },
6705   {
6706     O_COW_ENCLOSED_7,                           FALSE,
6707     EL_BD_COW_DOWN,                             -1, -1
6708   },
6709   {
6710     O_WALLED_DIAMOND,                           TRUE,
6711     EL_BD_WALL_DIAMOND,                         -1, -1
6712   },
6713   {
6714     O_WALLED_KEY_1,                             TRUE,
6715     EL_BD_WALL_KEY_1,                           -1, -1
6716   },
6717   {
6718     O_WALLED_KEY_2,                             TRUE,
6719     EL_BD_WALL_KEY_2,                           -1, -1
6720   },
6721   {
6722     O_WALLED_KEY_3,                             TRUE,
6723     EL_BD_WALL_KEY_3,                           -1, -1
6724   },
6725   {
6726     O_AMOEBA,                                   TRUE,
6727     EL_BD_AMOEBA,                               -1, -1
6728   },
6729   {
6730     O_AMOEBA_2,                                 TRUE,
6731     EL_BD_AMOEBA_2,                             -1, -1
6732   },
6733   {
6734     O_REPLICATOR,                               TRUE,
6735     EL_BD_REPLICATOR,                           -1, -1
6736   },
6737   {
6738     O_CONVEYOR_LEFT,                            TRUE,
6739     EL_BD_CONVEYOR_LEFT,                        -1, -1
6740   },
6741   {
6742     O_CONVEYOR_RIGHT,                           TRUE,
6743     EL_BD_CONVEYOR_RIGHT,                       -1, -1
6744   },
6745   {
6746     O_LAVA,                                     TRUE,
6747     EL_BD_LAVA,                                 -1, -1
6748   },
6749   {
6750     O_SWEET,                                    TRUE,
6751     EL_BD_SWEET,                                -1, -1
6752   },
6753   {
6754     O_VOODOO,                                   TRUE,
6755     EL_BD_VOODOO_DOLL,                          -1, -1
6756   },
6757   {
6758     O_SLIME,                                    TRUE,
6759     EL_BD_SLIME,                                -1, -1
6760   },
6761   {
6762     O_BLADDER,                                  TRUE,
6763     EL_BD_BLADDER,                              -1, -1
6764   },
6765   {
6766     O_BLADDER_1,                                TRUE,
6767     EL_BD_BLADDER_1,                            -1, -1
6768   },
6769   {
6770     O_BLADDER_1,                                FALSE,
6771     EL_BD_BLADDER,                              -1, -1
6772   },
6773   {
6774     O_BLADDER_2,                                TRUE,
6775     EL_BD_BLADDER_2,                            -1, -1
6776   },
6777   {
6778     O_BLADDER_2,                                FALSE,
6779     EL_BD_BLADDER,                              -1, -1
6780   },
6781   {
6782     O_BLADDER_3,                                TRUE,
6783     EL_BD_BLADDER_3,                            -1, -1
6784   },
6785   {
6786     O_BLADDER_3,                                FALSE,
6787     EL_BD_BLADDER,                              -1, -1
6788   },
6789   {
6790     O_BLADDER_4,                                TRUE,
6791     EL_BD_BLADDER_4,                            -1, -1
6792   },
6793   {
6794     O_BLADDER_4,                                FALSE,
6795     EL_BD_BLADDER,                              -1, -1
6796   },
6797   {
6798     O_BLADDER_5,                                TRUE,
6799     EL_BD_BLADDER_5,                            -1, -1
6800   },
6801   {
6802     O_BLADDER_5,                                FALSE,
6803     EL_BD_BLADDER,                              -1, -1
6804   },
6805   {
6806     O_BLADDER_6,                                TRUE,
6807     EL_BD_BLADDER_6,                            -1, -1
6808   },
6809   {
6810     O_BLADDER_6,                                FALSE,
6811     EL_BD_BLADDER,                              -1, -1
6812   },
6813   {
6814     O_BLADDER_7,                                TRUE,
6815     EL_BD_BLADDER_7,                            -1, -1
6816   },
6817   {
6818     O_BLADDER_7,                                FALSE,
6819     EL_BD_BLADDER,                              -1, -1
6820   },
6821   {
6822     O_BLADDER_8,                                TRUE,
6823     EL_BD_BLADDER_8,                            -1, -1
6824   },
6825   {
6826     O_BLADDER_8,                                FALSE,
6827     EL_BD_BLADDER,                              -1, -1
6828   },
6829   {
6830     O_WAITING_STONE,                            TRUE,
6831     EL_BD_WAITING_ROCK,                         -1, -1
6832   },
6833   {
6834     O_CHASING_STONE,                            TRUE,
6835     EL_BD_CHASING_ROCK,                         -1, -1
6836   },
6837   {
6838     O_GHOST,                                    TRUE,
6839     EL_BD_GHOST,                                -1, -1
6840   },
6841   {
6842     O_FIREFLY_1,                                TRUE,
6843     EL_BD_FIREFLY_LEFT,                         -1, -1
6844   },
6845   {
6846     O_FIREFLY_2,                                TRUE,
6847     EL_BD_FIREFLY_UP,                           -1, -1
6848   },
6849   {
6850     O_FIREFLY_3,                                TRUE,
6851     EL_BD_FIREFLY_RIGHT,                        -1, -1
6852   },
6853   {
6854     O_FIREFLY_4,                                TRUE,
6855     EL_BD_FIREFLY_DOWN,                         -1, -1
6856   },
6857   {
6858     O_ALT_FIREFLY_1,                            TRUE,
6859     EL_BD_FIREFLY_2_LEFT,                       -1, -1
6860   },
6861   {
6862     O_ALT_FIREFLY_2,                            TRUE,
6863     EL_BD_FIREFLY_2_UP,                         -1, -1
6864   },
6865   {
6866     O_ALT_FIREFLY_3,                            TRUE,
6867     EL_BD_FIREFLY_2_RIGHT,                      -1, -1
6868   },
6869   {
6870     O_ALT_FIREFLY_4,                            TRUE,
6871     EL_BD_FIREFLY_2_DOWN,                       -1, -1
6872   },
6873   {
6874     O_BUTTER_1,                                 TRUE,
6875     EL_BD_BUTTERFLY_LEFT,                       -1, -1
6876   },
6877   {
6878     O_BUTTER_2,                                 TRUE,
6879     EL_BD_BUTTERFLY_UP,                         -1, -1
6880   },
6881   {
6882     O_BUTTER_3,                                 TRUE,
6883     EL_BD_BUTTERFLY_RIGHT,                      -1, -1
6884   },
6885   {
6886     O_BUTTER_4,                                 TRUE,
6887     EL_BD_BUTTERFLY_DOWN,                       -1, -1
6888   },
6889   {
6890     O_ALT_BUTTER_1,                             TRUE,
6891     EL_BD_BUTTERFLY_2_LEFT,                     -1, -1
6892   },
6893   {
6894     O_ALT_BUTTER_2,                             TRUE,
6895     EL_BD_BUTTERFLY_2_UP,                       -1, -1
6896   },
6897   {
6898     O_ALT_BUTTER_3,                             TRUE,
6899     EL_BD_BUTTERFLY_2_RIGHT,                    -1, -1
6900   },
6901   {
6902     O_ALT_BUTTER_4,                             TRUE,
6903     EL_BD_BUTTERFLY_2_DOWN,                     -1, -1
6904   },
6905   {
6906     O_STONEFLY_1,                               TRUE,
6907     EL_BD_STONEFLY_LEFT,                        -1, -1
6908   },
6909   {
6910     O_STONEFLY_2,                               TRUE,
6911     EL_BD_STONEFLY_UP,                          -1, -1
6912   },
6913   {
6914     O_STONEFLY_3,                               TRUE,
6915     EL_BD_STONEFLY_RIGHT,                       -1, -1
6916   },
6917   {
6918     O_STONEFLY_4,                               TRUE,
6919     EL_BD_STONEFLY_DOWN,                        -1, -1
6920   },
6921   {
6922     O_BITER_1,                                  TRUE,
6923     EL_BD_BITER_UP,                             -1, -1
6924   },
6925   {
6926     O_BITER_2,                                  TRUE,
6927     EL_BD_BITER_RIGHT,                          -1, -1
6928   },
6929   {
6930     O_BITER_3,                                  TRUE,
6931     EL_BD_BITER_DOWN,                           -1, -1
6932   },
6933   {
6934     O_BITER_4,                                  TRUE,
6935     EL_BD_BITER_LEFT,                           -1, -1
6936   },
6937   {
6938     O_DRAGONFLY_1,                              TRUE,
6939     EL_BD_DRAGONFLY_LEFT,                       -1, -1
6940   },
6941   {
6942     O_DRAGONFLY_2,                              TRUE,
6943     EL_BD_DRAGONFLY_UP,                         -1, -1
6944   },
6945   {
6946     O_DRAGONFLY_3,                              TRUE,
6947     EL_BD_DRAGONFLY_RIGHT,                      -1, -1
6948   },
6949   {
6950     O_DRAGONFLY_4,                              TRUE,
6951     EL_BD_DRAGONFLY_DOWN,                       -1, -1
6952   },
6953   {
6954     O_PRE_PL_1,                                 TRUE,
6955     EL_BD_PLAYER_GROWING_1,                     -1, -1
6956   },
6957   {
6958     O_PRE_PL_1,                                 FALSE,
6959     EL_BD_PLAYER,                               ACTION_GROWING, -1
6960   },
6961   {
6962     O_PRE_PL_2,                                 TRUE,
6963     EL_BD_PLAYER_GROWING_2,                     -1, -1
6964   },
6965   {
6966     O_PRE_PL_2,                                 FALSE,
6967     EL_BD_PLAYER,                               ACTION_GROWING, -1
6968   },
6969   {
6970     O_PRE_PL_3,                                 TRUE,
6971     EL_BD_PLAYER_GROWING_3,                     -1, -1
6972   },
6973   {
6974     O_PRE_PL_3,                                 FALSE,
6975     EL_BD_PLAYER,                               ACTION_GROWING, -1
6976   },
6977   {
6978     O_PLAYER,                                   TRUE,
6979     EL_BD_PLAYER,                               -1, -1
6980   },
6981   {
6982     O_PLAYER_BOMB,                              TRUE,
6983     EL_BD_PLAYER_WITH_BOMB,                     -1, -1
6984   },
6985   {
6986     O_PLAYER_ROCKET_LAUNCHER,                   TRUE,
6987     EL_BD_PLAYER_WITH_ROCKET_LAUNCHER,          -1, -1
6988   },
6989   {
6990     O_PLAYER_GLUED,                             TRUE,
6991     EL_BD_PLAYER_GLUED,                         -1, -1
6992   },
6993   {
6994     O_PLAYER_STIRRING,                          TRUE,
6995     EL_BD_PLAYER_STIRRING,                      -1, -1
6996   },
6997   {
6998     O_ROCKET_LAUNCHER,                          TRUE,
6999     EL_BD_ROCKET_LAUNCHER,                      -1, -1
7000   },
7001   {
7002     O_ROCKET_1,                                 TRUE,
7003     EL_BD_ROCKET_RIGHT,                         -1, -1
7004   },
7005   {
7006     O_ROCKET_2,                                 TRUE,
7007     EL_BD_ROCKET_UP,                            -1, -1
7008   },
7009   {
7010     O_ROCKET_3,                                 TRUE,
7011     EL_BD_ROCKET_LEFT,                          -1, -1
7012   },
7013   {
7014     O_ROCKET_4,                                 TRUE,
7015     EL_BD_ROCKET_DOWN,                          -1, -1
7016   },
7017   {
7018     O_BOMB,                                     TRUE,
7019     EL_BD_BOMB,                                 -1, -1
7020   },
7021   {
7022     O_BOMB_TICK_1,                              TRUE,
7023     EL_BD_BOMB_TICKING_1,                       -1, -1
7024   },
7025   {
7026     O_BOMB_TICK_1,                              FALSE,
7027     EL_BD_BOMB,                                 ACTION_ACTIVE, -1
7028   },
7029   {
7030     O_BOMB_TICK_2,                              TRUE,
7031     EL_BD_BOMB_TICKING_2,                       -1, -1
7032   },
7033   {
7034     O_BOMB_TICK_2,                              FALSE,
7035     EL_BD_BOMB,                                 ACTION_ACTIVE, -1
7036   },
7037   {
7038     O_BOMB_TICK_3,                              TRUE,
7039     EL_BD_BOMB_TICKING_3,                       -1, -1
7040   },
7041   {
7042     O_BOMB_TICK_3,                              FALSE,
7043     EL_BD_BOMB,                                 ACTION_ACTIVE, -1
7044   },
7045   {
7046     O_BOMB_TICK_4,                              TRUE,
7047     EL_BD_BOMB_TICKING_4,                       -1, -1
7048   },
7049   {
7050     O_BOMB_TICK_4,                              FALSE,
7051     EL_BD_BOMB,                                 ACTION_ACTIVE, -1
7052   },
7053   {
7054     O_BOMB_TICK_5,                              TRUE,
7055     EL_BD_BOMB_TICKING_5,                       -1, -1
7056   },
7057   {
7058     O_BOMB_TICK_5,                              FALSE,
7059     EL_BD_BOMB,                                 ACTION_ACTIVE, -1
7060   },
7061   {
7062     O_BOMB_TICK_6,                              TRUE,
7063     EL_BD_BOMB_TICKING_6,                       -1, -1
7064   },
7065   {
7066     O_BOMB_TICK_6,                              FALSE,
7067     EL_BD_BOMB,                                 ACTION_ACTIVE, -1
7068   },
7069   {
7070     O_BOMB_TICK_7,                              TRUE,
7071     EL_BD_BOMB_TICKING_7,                       -1, -1
7072   },
7073   {
7074     O_BOMB_TICK_7,                              FALSE,
7075     EL_BD_BOMB,                                 ACTION_ACTIVE, -1
7076   },
7077   {
7078     O_NITRO_PACK,                               TRUE,
7079     EL_BD_NITRO_PACK,                           -1, -1
7080   },
7081   {
7082     O_NITRO_PACK_F,                             TRUE,
7083     EL_BD_NITRO_PACK_FALLING,                   -1, -1
7084   },
7085   {
7086     O_NITRO_PACK_F,                             FALSE,
7087     EL_BD_NITRO_PACK,                           ACTION_FALLING, -1
7088   },
7089   {
7090     O_PRE_CLOCK_1,                              TRUE,
7091     EL_BD_CLOCK_GROWING_1,                      -1, -1
7092   },
7093   {
7094     O_PRE_CLOCK_1,                              FALSE,
7095     EL_BD_CLOCK,                                ACTION_GROWING, -1
7096   },
7097   {
7098     O_PRE_CLOCK_2,                              TRUE,
7099     EL_BD_CLOCK_GROWING_2,                      -1, -1
7100   },
7101   {
7102     O_PRE_CLOCK_2,                              FALSE,
7103     EL_BD_CLOCK,                                ACTION_GROWING, -1
7104   },
7105   {
7106     O_PRE_CLOCK_3,                              TRUE,
7107     EL_BD_CLOCK_GROWING_3,                      -1, -1
7108   },
7109   {
7110     O_PRE_CLOCK_3,                              FALSE,
7111     EL_BD_CLOCK,                                ACTION_GROWING, -1
7112   },
7113   {
7114     O_PRE_CLOCK_4,                              TRUE,
7115     EL_BD_CLOCK_GROWING_4,                      -1, -1
7116   },
7117   {
7118     O_PRE_CLOCK_4,                              FALSE,
7119     EL_BD_CLOCK,                                ACTION_GROWING, -1
7120   },
7121   {
7122     O_PRE_DIA_1,                                TRUE,
7123     EL_BD_DIAMOND_GROWING_1,                    -1, -1
7124   },
7125   {
7126     O_PRE_DIA_1,                                FALSE,
7127     EL_BD_DIAMOND,                              ACTION_GROWING, -1
7128   },
7129   {
7130     O_PRE_DIA_2,                                TRUE,
7131     EL_BD_DIAMOND_GROWING_2,                    -1, -1
7132   },
7133   {
7134     O_PRE_DIA_2,                                FALSE,
7135     EL_BD_DIAMOND,                              ACTION_GROWING, -1
7136   },
7137   {
7138     O_PRE_DIA_3,                                TRUE,
7139     EL_BD_DIAMOND_GROWING_3,                    -1, -1
7140   },
7141   {
7142     O_PRE_DIA_3,                                FALSE,
7143     EL_BD_DIAMOND,                              ACTION_GROWING, -1
7144   },
7145   {
7146     O_PRE_DIA_4,                                TRUE,
7147     EL_BD_DIAMOND_GROWING_4,                    -1, -1
7148   },
7149   {
7150     O_PRE_DIA_4,                                FALSE,
7151     EL_BD_DIAMOND,                              ACTION_GROWING, -1
7152   },
7153   {
7154     O_PRE_DIA_5,                                TRUE,
7155     EL_BD_DIAMOND_GROWING_5,                    -1, -1
7156   },
7157   {
7158     O_PRE_DIA_5,                                FALSE,
7159     EL_BD_DIAMOND,                              ACTION_GROWING, -1
7160   },
7161   {
7162     O_EXPLODE_1,                                TRUE,
7163     EL_BD_EXPLODING_1,                          -1, -1
7164   },
7165   {
7166     O_EXPLODE_1,                                FALSE,
7167     EL_DEFAULT,                                 ACTION_EXPLODING, -1
7168   },
7169   {
7170     O_EXPLODE_2,                                TRUE,
7171     EL_BD_EXPLODING_2,                          -1, -1
7172   },
7173   {
7174     O_EXPLODE_2,                                FALSE,
7175     EL_DEFAULT,                                 ACTION_EXPLODING, -1
7176   },
7177   {
7178     O_EXPLODE_3,                                TRUE,
7179     EL_BD_EXPLODING_3,                          -1, -1
7180   },
7181   {
7182     O_EXPLODE_3,                                FALSE,
7183     EL_DEFAULT,                                 ACTION_EXPLODING, -1
7184   },
7185   {
7186     O_EXPLODE_4,                                TRUE,
7187     EL_BD_EXPLODING_4,                          -1, -1
7188   },
7189   {
7190     O_EXPLODE_4,                                FALSE,
7191     EL_DEFAULT,                                 ACTION_EXPLODING, -1
7192   },
7193   {
7194     O_EXPLODE_5,                                TRUE,
7195     EL_BD_EXPLODING_5,                          -1, -1
7196   },
7197   {
7198     O_EXPLODE_5,                                FALSE,
7199     EL_DEFAULT,                                 ACTION_EXPLODING, -1
7200   },
7201   {
7202     O_PRE_STONE_1,                              TRUE,
7203     EL_BD_ROCK_GROWING_1,                       -1, -1
7204   },
7205   {
7206     O_PRE_STONE_1,                              FALSE,
7207     EL_BD_ROCK,                                 ACTION_GROWING, -1
7208   },
7209   {
7210     O_PRE_STONE_2,                              TRUE,
7211     EL_BD_ROCK_GROWING_2,                       -1, -1
7212   },
7213   {
7214     O_PRE_STONE_2,                              FALSE,
7215     EL_BD_ROCK,                                 ACTION_GROWING, -1
7216   },
7217   {
7218     O_PRE_STONE_3,                              TRUE,
7219     EL_BD_ROCK_GROWING_3,                       -1, -1
7220   },
7221   {
7222     O_PRE_STONE_3,                              FALSE,
7223     EL_BD_ROCK,                                 ACTION_GROWING, -1
7224   },
7225   {
7226     O_PRE_STONE_4,                              TRUE,
7227     EL_BD_ROCK_GROWING_4,                       -1, -1
7228   },
7229   {
7230     O_PRE_STONE_4,                              FALSE,
7231     EL_BD_ROCK,                                 ACTION_GROWING, -1
7232   },
7233   {
7234     O_PRE_STEEL_1,                              TRUE,
7235     EL_BD_STEELWALL_GROWING_1,                  -1, -1
7236   },
7237   {
7238     O_PRE_STEEL_1,                              FALSE,
7239     EL_BD_STEELWALL,                            ACTION_GROWING, -1
7240   },
7241   {
7242     O_PRE_STEEL_2,                              TRUE,
7243     EL_BD_STEELWALL_GROWING_2,                  -1, -1
7244   },
7245   {
7246     O_PRE_STEEL_2,                              FALSE,
7247     EL_BD_STEELWALL,                            ACTION_GROWING, -1
7248   },
7249   {
7250     O_PRE_STEEL_3,                              TRUE,
7251     EL_BD_STEELWALL_GROWING_3,                  -1, -1
7252   },
7253   {
7254     O_PRE_STEEL_3,                              FALSE,
7255     EL_BD_STEELWALL,                            ACTION_GROWING, -1
7256   },
7257   {
7258     O_PRE_STEEL_4,                              TRUE,
7259     EL_BD_STEELWALL_GROWING_4,                  -1, -1
7260   },
7261   {
7262     O_PRE_STEEL_4,                              FALSE,
7263     EL_BD_STEELWALL,                            ACTION_GROWING, -1
7264   },
7265   {
7266     O_GHOST_EXPL_1,                             TRUE,
7267     EL_BD_GHOST_EXPLODING_1,                    -1, -1
7268   },
7269   {
7270     O_GHOST_EXPL_1,                             FALSE,
7271     EL_BD_GHOST,                                ACTION_EXPLODING, -1
7272   },
7273   {
7274     O_GHOST_EXPL_2,                             TRUE,
7275     EL_BD_GHOST_EXPLODING_2,                    -1, -1
7276   },
7277   {
7278     O_GHOST_EXPL_2,                             FALSE,
7279     EL_BD_GHOST,                                ACTION_EXPLODING, -1
7280   },
7281   {
7282     O_GHOST_EXPL_3,                             TRUE,
7283     EL_BD_GHOST_EXPLODING_3,                    -1, -1
7284   },
7285   {
7286     O_GHOST_EXPL_3,                             FALSE,
7287     EL_BD_GHOST,                                ACTION_EXPLODING, -1
7288   },
7289   {
7290     O_GHOST_EXPL_4,                             TRUE,
7291     EL_BD_GHOST_EXPLODING_4,                    -1, -1
7292   },
7293   {
7294     O_GHOST_EXPL_4,                             FALSE,
7295     EL_BD_GHOST,                                ACTION_EXPLODING, -1
7296   },
7297   {
7298     O_BOMB_EXPL_1,                              TRUE,
7299     EL_BD_BOMB_EXPLODING_1,                     -1, -1
7300   },
7301   {
7302     O_BOMB_EXPL_1,                              FALSE,
7303     EL_BD_BOMB,                                 ACTION_EXPLODING, -1
7304   },
7305   {
7306     O_BOMB_EXPL_2,                              TRUE,
7307     EL_BD_BOMB_EXPLODING_2,                     -1, -1
7308   },
7309   {
7310     O_BOMB_EXPL_2,                              FALSE,
7311     EL_BD_BOMB,                                 ACTION_EXPLODING, -1
7312   },
7313   {
7314     O_BOMB_EXPL_3,                              TRUE,
7315     EL_BD_BOMB_EXPLODING_3,                     -1, -1
7316   },
7317   {
7318     O_BOMB_EXPL_3,                              FALSE,
7319     EL_BD_BOMB,                                 ACTION_EXPLODING, -1
7320   },
7321   {
7322     O_BOMB_EXPL_4,                              TRUE,
7323     EL_BD_BOMB_EXPLODING_4,                     -1, -1
7324   },
7325   {
7326     O_BOMB_EXPL_4,                              FALSE,
7327     EL_BD_BOMB,                                 ACTION_EXPLODING, -1
7328   },
7329   {
7330     O_NITRO_EXPL_1,                             TRUE,
7331     EL_BD_NITRO_PACK_EXPLODING_1,               -1, -1
7332   },
7333   {
7334     O_NITRO_EXPL_1,                             FALSE,
7335     EL_BD_NITRO_PACK,                           ACTION_EXPLODING, -1
7336   },
7337   {
7338     O_NITRO_EXPL_2,                             TRUE,
7339     EL_BD_NITRO_PACK_EXPLODING_2,               -1, -1
7340   },
7341   {
7342     O_NITRO_EXPL_2,                             FALSE,
7343     EL_BD_NITRO_PACK,                           ACTION_EXPLODING, -1
7344   },
7345   {
7346     O_NITRO_EXPL_3,                             TRUE,
7347     EL_BD_NITRO_PACK_EXPLODING_3,               -1, -1
7348   },
7349   {
7350     O_NITRO_EXPL_3,                             FALSE,
7351     EL_BD_NITRO_PACK,                           ACTION_EXPLODING, -1
7352   },
7353   {
7354     O_NITRO_EXPL_4,                             TRUE,
7355     EL_BD_NITRO_PACK_EXPLODING_4,               -1, -1
7356   },
7357   {
7358     O_NITRO_EXPL_4,                             FALSE,
7359     EL_BD_NITRO_PACK,                           ACTION_EXPLODING, -1
7360   },
7361   {
7362     O_NITRO_PACK_EXPLODE,                       TRUE,
7363     EL_BD_NITRO_PACK_EXPLODING,                 -1, -1
7364   },
7365   {
7366     O_NITRO_PACK_EXPLODE,                       FALSE,
7367     EL_BD_NITRO_PACK,                           ACTION_EXPLODING, -1
7368   },
7369   {
7370     O_AMOEBA_2_EXPL_1,                          TRUE,
7371     EL_BD_AMOEBA_2_EXPLODING_1,                 -1, -1
7372   },
7373   {
7374     O_AMOEBA_2_EXPL_1,                          FALSE,
7375     EL_BD_AMOEBA_2,                             ACTION_EXPLODING, -1
7376   },
7377   {
7378     O_AMOEBA_2_EXPL_2,                          TRUE,
7379     EL_BD_AMOEBA_2_EXPLODING_2,                 -1, -1
7380   },
7381   {
7382     O_AMOEBA_2_EXPL_2,                          FALSE,
7383     EL_BD_AMOEBA_2,                             ACTION_EXPLODING, -1
7384   },
7385   {
7386     O_AMOEBA_2_EXPL_3,                          TRUE,
7387     EL_BD_AMOEBA_2_EXPLODING_3,                 -1, -1
7388   },
7389   {
7390     O_AMOEBA_2_EXPL_3,                          FALSE,
7391     EL_BD_AMOEBA_2,                             ACTION_EXPLODING, -1
7392   },
7393   {
7394     O_AMOEBA_2_EXPL_4,                          TRUE,
7395     EL_BD_AMOEBA_2_EXPLODING_4,                 -1, -1
7396   },
7397   {
7398     O_AMOEBA_2_EXPL_4,                          FALSE,
7399     EL_BD_AMOEBA_2,                             ACTION_EXPLODING, -1
7400   },
7401   {
7402     O_NUT_EXPL_1,                               TRUE,
7403     EL_BD_NUT_BREAKING_1,                       -1, -1
7404   },
7405   {
7406     O_NUT_EXPL_1,                               FALSE,
7407     EL_BD_NUT,                                  ACTION_BREAKING, -1
7408   },
7409   {
7410     O_NUT_EXPL_2,                               TRUE,
7411     EL_BD_NUT_BREAKING_2,                       -1, -1
7412   },
7413   {
7414     O_NUT_EXPL_2,                               FALSE,
7415     EL_BD_NUT,                                  ACTION_BREAKING, -1
7416   },
7417   {
7418     O_NUT_EXPL_3,                               TRUE,
7419     EL_BD_NUT_BREAKING_3,                       -1, -1
7420   },
7421   {
7422     O_NUT_EXPL_3,                               FALSE,
7423     EL_BD_NUT,                                  ACTION_BREAKING, -1
7424   },
7425   {
7426     O_NUT_EXPL_4,                               TRUE,
7427     EL_BD_NUT_BREAKING_4,                       -1, -1
7428   },
7429   {
7430     O_NUT_EXPL_4,                               FALSE,
7431     EL_BD_NUT,                                  ACTION_BREAKING, -1
7432   },
7433   {
7434     O_PLAYER_PNEUMATIC_LEFT,                    FALSE,
7435     EL_BD_PLAYER,                               ACTION_HITTING, MV_BIT_LEFT
7436   },
7437   {
7438     O_PLAYER_PNEUMATIC_RIGHT,                   FALSE,
7439     EL_BD_PLAYER,                               ACTION_HITTING, MV_BIT_RIGHT
7440   },
7441   {
7442     O_PNEUMATIC_ACTIVE_LEFT,                    FALSE,
7443     EL_BD_PNEUMATIC_HAMMER,                     ACTION_HITTING, MV_BIT_LEFT
7444   },
7445   {
7446     O_PNEUMATIC_ACTIVE_RIGHT,                   FALSE,
7447     EL_BD_PNEUMATIC_HAMMER,                     ACTION_HITTING, MV_BIT_RIGHT
7448   },
7449
7450   // helper (runtime) elements
7451
7452   {
7453     O_FAKE_BONUS,                               FALSE,
7454     EL_BD_FAKE_BONUS,                           -1, -1
7455   },
7456   {
7457     O_INBOX_CLOSED,                             FALSE,
7458     EL_BD_INBOX,                                -1, -1
7459   },
7460   {
7461     O_INBOX_OPEN,                               FALSE,
7462     EL_BD_INBOX,                                ACTION_OPENING, -1
7463   },
7464   {
7465     O_OUTBOX_CLOSED,                            FALSE,
7466     EL_BD_EXIT_CLOSED,                          -1, -1
7467   },
7468   {
7469     O_OUTBOX_OPEN,                              FALSE,
7470     EL_BD_EXIT_OPEN,                            -1, -1
7471   },
7472   {
7473     O_COVERED,                                  FALSE,
7474     EL_BD_COVERED,                              -1, -1
7475   },
7476   {
7477     O_PLAYER_LEFT,                              FALSE,
7478     EL_BD_PLAYER,                               ACTION_MOVING, MV_BIT_LEFT
7479   },
7480   {
7481     O_PLAYER_RIGHT,                             FALSE,
7482     EL_BD_PLAYER,                               ACTION_MOVING, MV_BIT_RIGHT
7483   },
7484   {
7485     O_PLAYER_BLINK,                             FALSE,
7486     EL_BD_PLAYER,                               ACTION_BORING_1, -1
7487   },
7488   {
7489     O_PLAYER_TAP,                               FALSE,
7490     EL_BD_PLAYER,                               ACTION_BORING_2, -1
7491   },
7492   {
7493     O_PLAYER_TAP_BLINK,                         FALSE,
7494     EL_BD_PLAYER,                               ACTION_BORING_3, -1
7495   },
7496   {
7497     O_CREATURE_SWITCH_ON,                       FALSE,
7498     EL_BD_CREATURE_SWITCH_ACTIVE,               -1, -1
7499   },
7500   {
7501     O_EXPANDING_WALL_SWITCH_HORIZ,              FALSE,
7502     EL_BD_EXPANDABLE_WALL_SWITCH,               -1, -1
7503   },
7504   {
7505     O_EXPANDING_WALL_SWITCH_VERT,               FALSE,
7506     EL_BD_EXPANDABLE_WALL_SWITCH_ACTIVE,        -1, -1
7507   },
7508   {
7509     O_GRAVITY_SWITCH_ACTIVE,                    FALSE,
7510     EL_BD_GRAVITY_SWITCH_ACTIVE,                -1, -1
7511   },
7512   {
7513     O_REPLICATOR_SWITCH_OFF,                    FALSE,
7514     EL_BD_REPLICATOR_SWITCH,                    -1, -1
7515   },
7516   {
7517     O_REPLICATOR_SWITCH_ON,                     FALSE,
7518     EL_BD_REPLICATOR_SWITCH_ACTIVE,             -1, -1
7519   },
7520   {
7521     O_CONVEYOR_DIR_NORMAL,                      FALSE,
7522     EL_BD_CONVEYOR_DIR_SWITCH,                  -1, -1
7523   },
7524   {
7525     O_CONVEYOR_DIR_CHANGED,                     FALSE,
7526     EL_BD_CONVEYOR_DIR_SWITCH_ACTIVE,           -1, -1
7527   },
7528   {
7529     O_CONVEYOR_SWITCH_OFF,                      FALSE,
7530     EL_BD_CONVEYOR_SWITCH,                      -1, -1
7531   },
7532   {
7533     O_CONVEYOR_SWITCH_ON,                       FALSE,
7534     EL_BD_CONVEYOR_SWITCH_ACTIVE,               -1, -1
7535   },
7536   {
7537     O_MAGIC_WALL_ACTIVE,                        FALSE,
7538     EL_BD_MAGIC_WALL_ACTIVE,                    -1, -1
7539   },
7540   {
7541     O_REPLICATOR_ACTIVE,                        FALSE,
7542     EL_BD_REPLICATOR_ACTIVE,                    -1, -1
7543   },
7544   {
7545     O_CONVEYOR_LEFT_ACTIVE,                     FALSE,
7546     EL_BD_CONVEYOR_LEFT_ACTIVE,                 -1, -1
7547   },
7548   {
7549     O_CONVEYOR_RIGHT_ACTIVE,                    FALSE,
7550     EL_BD_CONVEYOR_RIGHT_ACTIVE,                -1, -1
7551   },
7552   {
7553     O_BITER_SWITCH_1,                           FALSE,
7554     EL_BD_BITER_SWITCH_1,                       -1, -1
7555   },
7556   {
7557     O_BITER_SWITCH_2,                           FALSE,
7558     EL_BD_BITER_SWITCH_2,                       -1, -1
7559   },
7560   {
7561     O_BITER_SWITCH_3,                           FALSE,
7562     EL_BD_BITER_SWITCH_3,                       -1, -1
7563   },
7564   {
7565     O_BITER_SWITCH_4,                           FALSE,
7566     EL_BD_BITER_SWITCH_4,                       -1, -1
7567   },
7568
7569   {
7570     -1,                                         FALSE,
7571     -1,                                         -1, -1
7572   }
7573 };
7574
7575 int map_element_RND_to_BD_cave(int element_rnd)
7576 {
7577   static unsigned short mapping_RND_to_BD[NUM_FILE_ELEMENTS];
7578   static boolean mapping_initialized = FALSE;
7579
7580   if (!mapping_initialized)
7581   {
7582     int i;
7583
7584     // return "O_UNKNOWN" for all undefined elements in mapping array
7585     for (i = 0; i < NUM_FILE_ELEMENTS; i++)
7586       mapping_RND_to_BD[i] = O_UNKNOWN;
7587
7588     for (i = 0; bd_object_mapping_list[i].element_bd != -1; i++)
7589       if (bd_object_mapping_list[i].is_rnd_to_bd_mapping)
7590         mapping_RND_to_BD[bd_object_mapping_list[i].element_rnd] =
7591           bd_object_mapping_list[i].element_bd;
7592
7593     mapping_initialized = TRUE;
7594   }
7595
7596   if (element_rnd < 0 || element_rnd >= NUM_FILE_ELEMENTS)
7597   {
7598     Warn("invalid RND element %d", element_rnd);
7599
7600     return O_UNKNOWN;
7601   }
7602
7603   return mapping_RND_to_BD[element_rnd];
7604 }
7605
7606 int map_element_RND_to_BD_effect(int element_rnd, int action)
7607 {
7608   static unsigned short mapping_RND_to_BD[NUM_FILE_ELEMENTS][NUM_ACTIONS];
7609   static boolean mapping_initialized = FALSE;
7610
7611   if (!mapping_initialized)
7612   {
7613     int i, j;
7614
7615     // return "O_UNKNOWN" for all undefined elements in mapping array
7616     for (i = 0; i < NUM_FILE_ELEMENTS; i++)
7617       for (j = 0; j < NUM_ACTIONS; j++)
7618         mapping_RND_to_BD[i][j] = O_UNKNOWN;
7619
7620     for (i = 0; bd_object_mapping_list[i].element_bd != -1; i++)
7621     {
7622       int element_rnd = bd_object_mapping_list[i].element_rnd;
7623       int element_bd  = bd_object_mapping_list[i].element_bd;
7624       int action      = bd_object_mapping_list[i].action;
7625
7626       if (action != -1)
7627         mapping_RND_to_BD[element_rnd][action] = element_bd;
7628     }
7629
7630     mapping_initialized = TRUE;
7631   }
7632
7633   if (element_rnd < 0 || element_rnd >= NUM_FILE_ELEMENTS)
7634   {
7635     Warn("invalid RND element %d", element_rnd);
7636
7637     return O_UNKNOWN;
7638   }
7639
7640   if (action < 0 || action >= NUM_ACTIONS)
7641   {
7642     Warn("invalid action %d", action);
7643
7644     return O_UNKNOWN;
7645   }
7646
7647   return mapping_RND_to_BD[element_rnd][action];
7648 }
7649
7650 int map_element_BD_to_RND_cave(int element_bd)
7651 {
7652   static unsigned short mapping_BD_to_RND[O_MAX_ALL];
7653   static boolean mapping_initialized = FALSE;
7654
7655   if (!mapping_initialized)
7656   {
7657     int i;
7658
7659     // return "EL_UNKNOWN" for all undefined elements in mapping array
7660     for (i = 0; i < O_MAX_ALL; i++)
7661       mapping_BD_to_RND[i] = EL_UNKNOWN;
7662
7663     for (i = 0; bd_object_mapping_list[i].element_bd != -1; i++)
7664       if (bd_object_mapping_list[i].is_rnd_to_bd_mapping)
7665         mapping_BD_to_RND[bd_object_mapping_list[i].element_bd] =
7666           bd_object_mapping_list[i].element_rnd;
7667
7668     mapping_initialized = TRUE;
7669   }
7670
7671   if (element_bd < 0 || element_bd >= O_MAX_ALL)
7672   {
7673     Warn("invalid BD element %d", element_bd);
7674
7675     return EL_UNKNOWN;
7676   }
7677
7678   return mapping_BD_to_RND[element_bd];
7679 }
7680
7681 int map_element_BD_to_RND_game(int element_bd)
7682 {
7683   static unsigned short mapping_BD_to_RND[O_MAX_ALL];
7684   static boolean mapping_initialized = FALSE;
7685
7686   if (!mapping_initialized)
7687   {
7688     int i;
7689
7690     // return "EL_UNKNOWN" for all undefined elements in mapping array
7691     for (i = 0; i < O_MAX_ALL; i++)
7692       mapping_BD_to_RND[i] = EL_UNKNOWN;
7693
7694     for (i = 0; bd_object_mapping_list[i].element_bd != -1; i++)
7695       mapping_BD_to_RND[bd_object_mapping_list[i].element_bd] =
7696         bd_object_mapping_list[i].element_rnd;
7697
7698     mapping_initialized = TRUE;
7699   }
7700
7701   if (element_bd < 0 || element_bd >= O_MAX_ALL)
7702   {
7703     Warn("invalid BD element %d", element_bd);
7704
7705     return EL_UNKNOWN;
7706   }
7707
7708   return mapping_BD_to_RND[element_bd];
7709 }
7710
7711 static struct Mapping_EM_to_RND_object
7712 {
7713   int element_em;
7714   boolean is_rnd_to_em_mapping;         // unique mapping EM <-> RND
7715   boolean is_backside;                  // backside of moving element
7716
7717   int element_rnd;
7718   int action;
7719   int direction;
7720 }
7721 em_object_mapping_list[GAME_TILE_MAX + 1] =
7722 {
7723   {
7724     Zborder,                            FALSE,  FALSE,
7725     EL_EMPTY,                           -1, -1
7726   },
7727   {
7728     Zplayer,                            FALSE,  FALSE,
7729     EL_EMPTY,                           -1, -1
7730   },
7731
7732   {
7733     Zbug,                               FALSE,  FALSE,
7734     EL_EMPTY,                           -1, -1
7735   },
7736   {
7737     Ztank,                              FALSE,  FALSE,
7738     EL_EMPTY,                           -1, -1
7739   },
7740   {
7741     Zeater,                             FALSE,  FALSE,
7742     EL_EMPTY,                           -1, -1
7743   },
7744   {
7745     Zdynamite,                          FALSE,  FALSE,
7746     EL_EMPTY,                           -1, -1
7747   },
7748   {
7749     Zboom,                              FALSE,  FALSE,
7750     EL_EMPTY,                           -1, -1
7751   },
7752
7753   {
7754     Xchain,                             FALSE,  FALSE,
7755     EL_DEFAULT,                         ACTION_EXPLODING, -1
7756   },
7757   {
7758     Xboom_bug,                          FALSE,  FALSE,
7759     EL_BUG,                             ACTION_EXPLODING, -1
7760   },
7761   {
7762     Xboom_tank,                         FALSE,  FALSE,
7763     EL_SPACESHIP,                       ACTION_EXPLODING, -1
7764   },
7765   {
7766     Xboom_android,                      FALSE,  FALSE,
7767     EL_EMC_ANDROID,                     ACTION_OTHER, -1
7768   },
7769   {
7770     Xboom_1,                            FALSE,  FALSE,
7771     EL_DEFAULT,                         ACTION_EXPLODING, -1
7772   },
7773   {
7774     Xboom_2,                            FALSE,  FALSE,
7775     EL_DEFAULT,                         ACTION_EXPLODING, -1
7776   },
7777
7778   {
7779     Xblank,                             TRUE,   FALSE,
7780     EL_EMPTY,                           -1, -1
7781   },
7782
7783   {
7784     Xsplash_e,                          FALSE,  FALSE,
7785     EL_ACID_SPLASH_RIGHT,               -1, -1
7786   },
7787   {
7788     Xsplash_w,                          FALSE,  FALSE,
7789     EL_ACID_SPLASH_LEFT,                -1, -1
7790   },
7791
7792   {
7793     Xplant,                             TRUE,   FALSE,
7794     EL_EMC_PLANT,                       -1, -1
7795   },
7796   {
7797     Yplant,                             FALSE,  FALSE,
7798     EL_EMC_PLANT,                       -1, -1
7799   },
7800
7801   {
7802     Xacid_1,                            TRUE,   FALSE,
7803     EL_ACID,                            -1, -1
7804   },
7805   {
7806     Xacid_2,                            FALSE,  FALSE,
7807     EL_ACID,                            -1, -1
7808   },
7809   {
7810     Xacid_3,                            FALSE,  FALSE,
7811     EL_ACID,                            -1, -1
7812   },
7813   {
7814     Xacid_4,                            FALSE,  FALSE,
7815     EL_ACID,                            -1, -1
7816   },
7817   {
7818     Xacid_5,                            FALSE,  FALSE,
7819     EL_ACID,                            -1, -1
7820   },
7821   {
7822     Xacid_6,                            FALSE,  FALSE,
7823     EL_ACID,                            -1, -1
7824   },
7825   {
7826     Xacid_7,                            FALSE,  FALSE,
7827     EL_ACID,                            -1, -1
7828   },
7829   {
7830     Xacid_8,                            FALSE,  FALSE,
7831     EL_ACID,                            -1, -1
7832   },
7833
7834   {
7835     Xfake_acid_1,                       TRUE,   FALSE,
7836     EL_EMC_FAKE_ACID,                   -1, -1
7837   },
7838   {
7839     Xfake_acid_2,                       FALSE,  FALSE,
7840     EL_EMC_FAKE_ACID,                   -1, -1
7841   },
7842   {
7843     Xfake_acid_3,                       FALSE,  FALSE,
7844     EL_EMC_FAKE_ACID,                   -1, -1
7845   },
7846   {
7847     Xfake_acid_4,                       FALSE,  FALSE,
7848     EL_EMC_FAKE_ACID,                   -1, -1
7849   },
7850   {
7851     Xfake_acid_5,                       FALSE,  FALSE,
7852     EL_EMC_FAKE_ACID,                   -1, -1
7853   },
7854   {
7855     Xfake_acid_6,                       FALSE,  FALSE,
7856     EL_EMC_FAKE_ACID,                   -1, -1
7857   },
7858   {
7859     Xfake_acid_7,                       FALSE,  FALSE,
7860     EL_EMC_FAKE_ACID,                   -1, -1
7861   },
7862   {
7863     Xfake_acid_8,                       FALSE,  FALSE,
7864     EL_EMC_FAKE_ACID,                   -1, -1
7865   },
7866
7867   {
7868     Xfake_acid_1_player,                FALSE,  FALSE,
7869     EL_EMC_FAKE_ACID,                   -1, -1
7870   },
7871   {
7872     Xfake_acid_2_player,                FALSE,  FALSE,
7873     EL_EMC_FAKE_ACID,                   -1, -1
7874   },
7875   {
7876     Xfake_acid_3_player,                FALSE,  FALSE,
7877     EL_EMC_FAKE_ACID,                   -1, -1
7878   },
7879   {
7880     Xfake_acid_4_player,                FALSE,  FALSE,
7881     EL_EMC_FAKE_ACID,                   -1, -1
7882   },
7883   {
7884     Xfake_acid_5_player,                FALSE,  FALSE,
7885     EL_EMC_FAKE_ACID,                   -1, -1
7886   },
7887   {
7888     Xfake_acid_6_player,                FALSE,  FALSE,
7889     EL_EMC_FAKE_ACID,                   -1, -1
7890   },
7891   {
7892     Xfake_acid_7_player,                FALSE,  FALSE,
7893     EL_EMC_FAKE_ACID,                   -1, -1
7894   },
7895   {
7896     Xfake_acid_8_player,                FALSE,  FALSE,
7897     EL_EMC_FAKE_ACID,                   -1, -1
7898   },
7899
7900   {
7901     Xgrass,                             TRUE,   FALSE,
7902     EL_EMC_GRASS,                       -1, -1
7903   },
7904   {
7905     Ygrass_nB,                          FALSE,  FALSE,
7906     EL_EMC_GRASS,                       ACTION_DIGGING, MV_BIT_UP
7907   },
7908   {
7909     Ygrass_eB,                          FALSE,  FALSE,
7910     EL_EMC_GRASS,                       ACTION_DIGGING, MV_BIT_RIGHT
7911   },
7912   {
7913     Ygrass_sB,                          FALSE,  FALSE,
7914     EL_EMC_GRASS,                       ACTION_DIGGING, MV_BIT_DOWN
7915   },
7916   {
7917     Ygrass_wB,                          FALSE,  FALSE,
7918     EL_EMC_GRASS,                       ACTION_DIGGING, MV_BIT_LEFT
7919   },
7920
7921   {
7922     Xdirt,                              TRUE,   FALSE,
7923     EL_SAND,                            -1, -1
7924   },
7925   {
7926     Ydirt_nB,                           FALSE,  FALSE,
7927     EL_SAND,                            ACTION_DIGGING, MV_BIT_UP
7928   },
7929   {
7930     Ydirt_eB,                           FALSE,  FALSE,
7931     EL_SAND,                            ACTION_DIGGING, MV_BIT_RIGHT
7932   },
7933   {
7934     Ydirt_sB,                           FALSE,  FALSE,
7935     EL_SAND,                            ACTION_DIGGING, MV_BIT_DOWN
7936   },
7937   {
7938     Ydirt_wB,                           FALSE,  FALSE,
7939     EL_SAND,                            ACTION_DIGGING, MV_BIT_LEFT
7940   },
7941
7942   {
7943     Xandroid,                           TRUE,   FALSE,
7944     EL_EMC_ANDROID,                     ACTION_ACTIVE, -1
7945   },
7946   {
7947     Xandroid_1_n,                       FALSE,  FALSE,
7948     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_UP
7949   },
7950   {
7951     Xandroid_2_n,                       FALSE,  FALSE,
7952     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_UP
7953   },
7954   {
7955     Xandroid_1_e,                       FALSE,  FALSE,
7956     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_RIGHT
7957   },
7958   {
7959     Xandroid_2_e,                       FALSE,  FALSE,
7960     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_RIGHT
7961   },
7962   {
7963     Xandroid_1_w,                       FALSE,  FALSE,
7964     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_LEFT
7965   },
7966   {
7967     Xandroid_2_w,                       FALSE,  FALSE,
7968     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_LEFT
7969   },
7970   {
7971     Xandroid_1_s,                       FALSE,  FALSE,
7972     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_DOWN
7973   },
7974   {
7975     Xandroid_2_s,                       FALSE,  FALSE,
7976     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_DOWN
7977   },
7978   {
7979     Yandroid_n,                         FALSE,  FALSE,
7980     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_UP
7981   },
7982   {
7983     Yandroid_nB,                        FALSE,  TRUE,
7984     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_UP
7985   },
7986   {
7987     Yandroid_ne,                        FALSE,  FALSE,
7988     EL_EMC_ANDROID,                     ACTION_GROWING, MV_BIT_UPRIGHT
7989   },
7990   {
7991     Yandroid_neB,                       FALSE,  TRUE,
7992     EL_EMC_ANDROID,                     ACTION_SHRINKING, MV_BIT_UPRIGHT
7993   },
7994   {
7995     Yandroid_e,                         FALSE,  FALSE,
7996     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_RIGHT
7997   },
7998   {
7999     Yandroid_eB,                        FALSE,  TRUE,
8000     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_RIGHT
8001   },
8002   {
8003     Yandroid_se,                        FALSE,  FALSE,
8004     EL_EMC_ANDROID,                     ACTION_GROWING, MV_BIT_DOWNRIGHT
8005   },
8006   {
8007     Yandroid_seB,                       FALSE,  TRUE,
8008     EL_EMC_ANDROID,                     ACTION_SHRINKING, MV_BIT_DOWNRIGHT
8009   },
8010   {
8011     Yandroid_s,                         FALSE,  FALSE,
8012     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_DOWN
8013   },
8014   {
8015     Yandroid_sB,                        FALSE,  TRUE,
8016     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_DOWN
8017   },
8018   {
8019     Yandroid_sw,                        FALSE,  FALSE,
8020     EL_EMC_ANDROID,                     ACTION_GROWING, MV_BIT_DOWNLEFT
8021   },
8022   {
8023     Yandroid_swB,                       FALSE,  TRUE,
8024     EL_EMC_ANDROID,                     ACTION_SHRINKING, MV_BIT_DOWNLEFT
8025   },
8026   {
8027     Yandroid_w,                         FALSE,  FALSE,
8028     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_LEFT
8029   },
8030   {
8031     Yandroid_wB,                        FALSE,  TRUE,
8032     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_LEFT
8033   },
8034   {
8035     Yandroid_nw,                        FALSE,  FALSE,
8036     EL_EMC_ANDROID,                     ACTION_GROWING, MV_BIT_UPLEFT
8037   },
8038   {
8039     Yandroid_nwB,                       FALSE,  TRUE,
8040     EL_EMC_ANDROID,                     ACTION_SHRINKING, MV_BIT_UPLEFT
8041   },
8042
8043   {
8044     Xeater_n,                           TRUE,   FALSE,
8045     EL_YAMYAM_UP,                       -1, -1
8046   },
8047   {
8048     Xeater_e,                           TRUE,   FALSE,
8049     EL_YAMYAM_RIGHT,                    -1, -1
8050   },
8051   {
8052     Xeater_w,                           TRUE,   FALSE,
8053     EL_YAMYAM_LEFT,                     -1, -1
8054   },
8055   {
8056     Xeater_s,                           TRUE,   FALSE,
8057     EL_YAMYAM_DOWN,                     -1, -1
8058   },
8059   {
8060     Yeater_n,                           FALSE,  FALSE,
8061     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_UP
8062   },
8063   {
8064     Yeater_nB,                          FALSE,  TRUE,
8065     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_UP
8066   },
8067   {
8068     Yeater_e,                           FALSE,  FALSE,
8069     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_RIGHT
8070   },
8071   {
8072     Yeater_eB,                          FALSE,  TRUE,
8073     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_RIGHT
8074   },
8075   {
8076     Yeater_s,                           FALSE,  FALSE,
8077     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_DOWN
8078   },
8079   {
8080     Yeater_sB,                          FALSE,  TRUE,
8081     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_DOWN
8082   },
8083   {
8084     Yeater_w,                           FALSE,  FALSE,
8085     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_LEFT
8086   },
8087   {
8088     Yeater_wB,                          FALSE,  TRUE,
8089     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_LEFT
8090   },
8091   {
8092     Yeater_stone,                       FALSE,  FALSE,
8093     EL_YAMYAM,                          ACTION_SMASHED_BY_ROCK, -1
8094   },
8095   {
8096     Yeater_spring,                      FALSE,  FALSE,
8097     EL_YAMYAM,                          ACTION_SMASHED_BY_SPRING, -1
8098   },
8099
8100   {
8101     Xalien,                             TRUE,   FALSE,
8102     EL_ROBOT,                           -1, -1
8103   },
8104   {
8105     Xalien_pause,                       FALSE,  FALSE,
8106     EL_ROBOT,                           -1, -1
8107   },
8108   {
8109     Yalien_n,                           FALSE,  FALSE,
8110     EL_ROBOT,                           ACTION_MOVING, MV_BIT_UP
8111   },
8112   {
8113     Yalien_nB,                          FALSE,  TRUE,
8114     EL_ROBOT,                           ACTION_MOVING, MV_BIT_UP
8115   },
8116   {
8117     Yalien_e,                           FALSE,  FALSE,
8118     EL_ROBOT,                           ACTION_MOVING, MV_BIT_RIGHT
8119   },
8120   {
8121     Yalien_eB,                          FALSE,  TRUE,
8122     EL_ROBOT,                           ACTION_MOVING, MV_BIT_RIGHT
8123   },
8124   {
8125     Yalien_s,                           FALSE,  FALSE,
8126     EL_ROBOT,                           ACTION_MOVING, MV_BIT_DOWN
8127   },
8128   {
8129     Yalien_sB,                          FALSE,  TRUE,
8130     EL_ROBOT,                           ACTION_MOVING, MV_BIT_DOWN
8131   },
8132   {
8133     Yalien_w,                           FALSE,  FALSE,
8134     EL_ROBOT,                           ACTION_MOVING, MV_BIT_LEFT
8135   },
8136   {
8137     Yalien_wB,                          FALSE,  TRUE,
8138     EL_ROBOT,                           ACTION_MOVING, MV_BIT_LEFT
8139   },
8140   {
8141     Yalien_stone,                       FALSE,  FALSE,
8142     EL_ROBOT,                           ACTION_SMASHED_BY_ROCK, -1
8143   },
8144   {
8145     Yalien_spring,                      FALSE,  FALSE,
8146     EL_ROBOT,                           ACTION_SMASHED_BY_SPRING, -1
8147   },
8148
8149   {
8150     Xbug_1_n,                           TRUE,   FALSE,
8151     EL_BUG_UP,                          -1, -1
8152   },
8153   {
8154     Xbug_1_e,                           TRUE,   FALSE,
8155     EL_BUG_RIGHT,                       -1, -1
8156   },
8157   {
8158     Xbug_1_s,                           TRUE,   FALSE,
8159     EL_BUG_DOWN,                        -1, -1
8160   },
8161   {
8162     Xbug_1_w,                           TRUE,   FALSE,
8163     EL_BUG_LEFT,                        -1, -1
8164   },
8165   {
8166     Xbug_2_n,                           FALSE,  FALSE,
8167     EL_BUG_UP,                          -1, -1
8168   },
8169   {
8170     Xbug_2_e,                           FALSE,  FALSE,
8171     EL_BUG_RIGHT,                       -1, -1
8172   },
8173   {
8174     Xbug_2_s,                           FALSE,  FALSE,
8175     EL_BUG_DOWN,                        -1, -1
8176   },
8177   {
8178     Xbug_2_w,                           FALSE,  FALSE,
8179     EL_BUG_LEFT,                        -1, -1
8180   },
8181   {
8182     Ybug_n,                             FALSE,  FALSE,
8183     EL_BUG,                             ACTION_MOVING, MV_BIT_UP
8184   },
8185   {
8186     Ybug_nB,                            FALSE,  TRUE,
8187     EL_BUG,                             ACTION_MOVING, MV_BIT_UP
8188   },
8189   {
8190     Ybug_e,                             FALSE,  FALSE,
8191     EL_BUG,                             ACTION_MOVING, MV_BIT_RIGHT
8192   },
8193   {
8194     Ybug_eB,                            FALSE,  TRUE,
8195     EL_BUG,                             ACTION_MOVING, MV_BIT_RIGHT
8196   },
8197   {
8198     Ybug_s,                             FALSE,  FALSE,
8199     EL_BUG,                             ACTION_MOVING, MV_BIT_DOWN
8200   },
8201   {
8202     Ybug_sB,                            FALSE,  TRUE,
8203     EL_BUG,                             ACTION_MOVING, MV_BIT_DOWN
8204   },
8205   {
8206     Ybug_w,                             FALSE,  FALSE,
8207     EL_BUG,                             ACTION_MOVING, MV_BIT_LEFT
8208   },
8209   {
8210     Ybug_wB,                            FALSE,  TRUE,
8211     EL_BUG,                             ACTION_MOVING, MV_BIT_LEFT
8212   },
8213   {
8214     Ybug_w_n,                           FALSE,  FALSE,
8215     EL_BUG,                             ACTION_TURNING_FROM_LEFT, MV_BIT_UP
8216   },
8217   {
8218     Ybug_n_e,                           FALSE,  FALSE,
8219     EL_BUG,                             ACTION_TURNING_FROM_UP, MV_BIT_RIGHT
8220   },
8221   {
8222     Ybug_e_s,                           FALSE,  FALSE,
8223     EL_BUG,                             ACTION_TURNING_FROM_RIGHT, MV_BIT_DOWN
8224   },
8225   {
8226     Ybug_s_w,                           FALSE,  FALSE,
8227     EL_BUG,                             ACTION_TURNING_FROM_DOWN, MV_BIT_LEFT
8228   },
8229   {
8230     Ybug_e_n,                           FALSE,  FALSE,
8231     EL_BUG,                             ACTION_TURNING_FROM_RIGHT, MV_BIT_UP
8232   },
8233   {
8234     Ybug_s_e,                           FALSE,  FALSE,
8235     EL_BUG,                             ACTION_TURNING_FROM_DOWN, MV_BIT_RIGHT
8236   },
8237   {
8238     Ybug_w_s,                           FALSE,  FALSE,
8239     EL_BUG,                             ACTION_TURNING_FROM_LEFT, MV_BIT_DOWN
8240   },
8241   {
8242     Ybug_n_w,                           FALSE,  FALSE,
8243     EL_BUG,                             ACTION_TURNING_FROM_UP, MV_BIT_LEFT
8244   },
8245   {
8246     Ybug_stone,                         FALSE,  FALSE,
8247     EL_BUG,                             ACTION_SMASHED_BY_ROCK, -1
8248   },
8249   {
8250     Ybug_spring,                        FALSE,  FALSE,
8251     EL_BUG,                             ACTION_SMASHED_BY_SPRING, -1
8252   },
8253
8254   {
8255     Xtank_1_n,                          TRUE,   FALSE,
8256     EL_SPACESHIP_UP,                    -1, -1
8257   },
8258   {
8259     Xtank_1_e,                          TRUE,   FALSE,
8260     EL_SPACESHIP_RIGHT,                 -1, -1
8261   },
8262   {
8263     Xtank_1_s,                          TRUE,   FALSE,
8264     EL_SPACESHIP_DOWN,                  -1, -1
8265   },
8266   {
8267     Xtank_1_w,                          TRUE,   FALSE,
8268     EL_SPACESHIP_LEFT,                  -1, -1
8269   },
8270   {
8271     Xtank_2_n,                          FALSE,  FALSE,
8272     EL_SPACESHIP_UP,                    -1, -1
8273   },
8274   {
8275     Xtank_2_e,                          FALSE,  FALSE,
8276     EL_SPACESHIP_RIGHT,                 -1, -1
8277   },
8278   {
8279     Xtank_2_s,                          FALSE,  FALSE,
8280     EL_SPACESHIP_DOWN,                  -1, -1
8281   },
8282   {
8283     Xtank_2_w,                          FALSE,  FALSE,
8284     EL_SPACESHIP_LEFT,                  -1, -1
8285   },
8286   {
8287     Ytank_n,                            FALSE,  FALSE,
8288     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_UP
8289   },
8290   {
8291     Ytank_nB,                           FALSE,  TRUE,
8292     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_UP
8293   },
8294   {
8295     Ytank_e,                            FALSE,  FALSE,
8296     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_RIGHT
8297   },
8298   {
8299     Ytank_eB,                           FALSE,  TRUE,
8300     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_RIGHT
8301   },
8302   {
8303     Ytank_s,                            FALSE,  FALSE,
8304     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_DOWN
8305   },
8306   {
8307     Ytank_sB,                           FALSE,  TRUE,
8308     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_DOWN
8309   },
8310   {
8311     Ytank_w,                            FALSE,  FALSE,
8312     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_LEFT
8313   },
8314   {
8315     Ytank_wB,                           FALSE,  TRUE,
8316     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_LEFT
8317   },
8318   {
8319     Ytank_w_n,                          FALSE,  FALSE,
8320     EL_SPACESHIP,                       ACTION_TURNING_FROM_LEFT, MV_BIT_UP
8321   },
8322   {
8323     Ytank_n_e,                          FALSE,  FALSE,
8324     EL_SPACESHIP,                       ACTION_TURNING_FROM_UP, MV_BIT_RIGHT
8325   },
8326   {
8327     Ytank_e_s,                          FALSE,  FALSE,
8328     EL_SPACESHIP,                       ACTION_TURNING_FROM_RIGHT, MV_BIT_DOWN
8329   },
8330   {
8331     Ytank_s_w,                          FALSE,  FALSE,
8332     EL_SPACESHIP,                       ACTION_TURNING_FROM_DOWN, MV_BIT_LEFT
8333   },
8334   {
8335     Ytank_e_n,                          FALSE,  FALSE,
8336     EL_SPACESHIP,                       ACTION_TURNING_FROM_RIGHT, MV_BIT_UP
8337   },
8338   {
8339     Ytank_s_e,                          FALSE,  FALSE,
8340     EL_SPACESHIP,                       ACTION_TURNING_FROM_DOWN, MV_BIT_RIGHT
8341   },
8342   {
8343     Ytank_w_s,                          FALSE,  FALSE,
8344     EL_SPACESHIP,                       ACTION_TURNING_FROM_LEFT, MV_BIT_DOWN
8345   },
8346   {
8347     Ytank_n_w,                          FALSE,  FALSE,
8348     EL_SPACESHIP,                       ACTION_TURNING_FROM_UP, MV_BIT_LEFT
8349   },
8350   {
8351     Ytank_stone,                        FALSE,  FALSE,
8352     EL_SPACESHIP,                       ACTION_SMASHED_BY_ROCK, -1
8353   },
8354   {
8355     Ytank_spring,                       FALSE,  FALSE,
8356     EL_SPACESHIP,                       ACTION_SMASHED_BY_SPRING, -1
8357   },
8358
8359   {
8360     Xemerald,                           TRUE,   FALSE,
8361     EL_EMERALD,                         -1, -1
8362   },
8363   {
8364     Xemerald_pause,                     FALSE,  FALSE,
8365     EL_EMERALD,                         -1, -1
8366   },
8367   {
8368     Xemerald_fall,                      FALSE,  FALSE,
8369     EL_EMERALD,                         -1, -1
8370   },
8371   {
8372     Xemerald_shine,                     FALSE,  FALSE,
8373     EL_EMERALD,                         ACTION_TWINKLING, -1
8374   },
8375   {
8376     Yemerald_s,                         FALSE,  FALSE,
8377     EL_EMERALD,                         ACTION_FALLING, -1
8378   },
8379   {
8380     Yemerald_sB,                        FALSE,  TRUE,
8381     EL_EMERALD,                         ACTION_FALLING, -1
8382   },
8383   {
8384     Yemerald_e,                         FALSE,  FALSE,
8385     EL_EMERALD,                         ACTION_MOVING, MV_BIT_RIGHT
8386   },
8387   {
8388     Yemerald_eB,                        FALSE,  TRUE,
8389     EL_EMERALD,                         ACTION_MOVING, MV_BIT_RIGHT
8390   },
8391   {
8392     Yemerald_w,                         FALSE,  FALSE,
8393     EL_EMERALD,                         ACTION_MOVING, MV_BIT_LEFT
8394   },
8395   {
8396     Yemerald_wB,                        FALSE,  TRUE,
8397     EL_EMERALD,                         ACTION_MOVING, MV_BIT_LEFT
8398   },
8399   {
8400     Yemerald_blank,                     FALSE,  FALSE,
8401     EL_EMERALD,                         ACTION_COLLECTING, -1
8402   },
8403
8404   {
8405     Xdiamond,                           TRUE,   FALSE,
8406     EL_DIAMOND,                         -1, -1
8407   },
8408   {
8409     Xdiamond_pause,                     FALSE,  FALSE,
8410     EL_DIAMOND,                         -1, -1
8411   },
8412   {
8413     Xdiamond_fall,                      FALSE,  FALSE,
8414     EL_DIAMOND,                         -1, -1
8415   },
8416   {
8417     Xdiamond_shine,                     FALSE,  FALSE,
8418     EL_DIAMOND,                         ACTION_TWINKLING, -1
8419   },
8420   {
8421     Ydiamond_s,                         FALSE,  FALSE,
8422     EL_DIAMOND,                         ACTION_FALLING, -1
8423   },
8424   {
8425     Ydiamond_sB,                        FALSE,  TRUE,
8426     EL_DIAMOND,                         ACTION_FALLING, -1
8427   },
8428   {
8429     Ydiamond_e,                         FALSE,  FALSE,
8430     EL_DIAMOND,                         ACTION_MOVING, MV_BIT_RIGHT
8431   },
8432   {
8433     Ydiamond_eB,                        FALSE,  TRUE,
8434     EL_DIAMOND,                         ACTION_MOVING, MV_BIT_RIGHT
8435   },
8436   {
8437     Ydiamond_w,                         FALSE,  FALSE,
8438     EL_DIAMOND,                         ACTION_MOVING, MV_BIT_LEFT
8439   },
8440   {
8441     Ydiamond_wB,                        FALSE,  TRUE,
8442     EL_DIAMOND,                         ACTION_MOVING, MV_BIT_LEFT
8443   },
8444   {
8445     Ydiamond_blank,                     FALSE,  FALSE,
8446     EL_DIAMOND,                         ACTION_COLLECTING, -1
8447   },
8448   {
8449     Ydiamond_stone,                     FALSE,  FALSE,
8450     EL_DIAMOND,                         ACTION_SMASHED_BY_ROCK, -1
8451   },
8452
8453   {
8454     Xstone,                             TRUE,   FALSE,
8455     EL_ROCK,                            -1, -1
8456   },
8457   {
8458     Xstone_pause,                       FALSE,  FALSE,
8459     EL_ROCK,                            -1, -1
8460   },
8461   {
8462     Xstone_fall,                        FALSE,  FALSE,
8463     EL_ROCK,                            -1, -1
8464   },
8465   {
8466     Ystone_s,                           FALSE,  FALSE,
8467     EL_ROCK,                            ACTION_FALLING, -1
8468   },
8469   {
8470     Ystone_sB,                          FALSE,  TRUE,
8471     EL_ROCK,                            ACTION_FALLING, -1
8472   },
8473   {
8474     Ystone_e,                           FALSE,  FALSE,
8475     EL_ROCK,                            ACTION_MOVING, MV_BIT_RIGHT
8476   },
8477   {
8478     Ystone_eB,                          FALSE,  TRUE,
8479     EL_ROCK,                            ACTION_MOVING, MV_BIT_RIGHT
8480   },
8481   {
8482     Ystone_w,                           FALSE,  FALSE,
8483     EL_ROCK,                            ACTION_MOVING, MV_BIT_LEFT
8484   },
8485   {
8486     Ystone_wB,                          FALSE,  TRUE,
8487     EL_ROCK,                            ACTION_MOVING, MV_BIT_LEFT
8488   },
8489
8490   {
8491     Xbomb,                              TRUE,   FALSE,
8492     EL_BOMB,                            -1, -1
8493   },
8494   {
8495     Xbomb_pause,                        FALSE,  FALSE,
8496     EL_BOMB,                            -1, -1
8497   },
8498   {
8499     Xbomb_fall,                         FALSE,  FALSE,
8500     EL_BOMB,                            -1, -1
8501   },
8502   {
8503     Ybomb_s,                            FALSE,  FALSE,
8504     EL_BOMB,                            ACTION_FALLING, -1
8505   },
8506   {
8507     Ybomb_sB,                           FALSE,  TRUE,
8508     EL_BOMB,                            ACTION_FALLING, -1
8509   },
8510   {
8511     Ybomb_e,                            FALSE,  FALSE,
8512     EL_BOMB,                            ACTION_MOVING, MV_BIT_RIGHT
8513   },
8514   {
8515     Ybomb_eB,                           FALSE,  TRUE,
8516     EL_BOMB,                            ACTION_MOVING, MV_BIT_RIGHT
8517   },
8518   {
8519     Ybomb_w,                            FALSE,  FALSE,
8520     EL_BOMB,                            ACTION_MOVING, MV_BIT_LEFT
8521   },
8522   {
8523     Ybomb_wB,                           FALSE,  TRUE,
8524     EL_BOMB,                            ACTION_MOVING, MV_BIT_LEFT
8525   },
8526   {
8527     Ybomb_blank,                        FALSE,  FALSE,
8528     EL_BOMB,                            ACTION_ACTIVATING, -1
8529   },
8530
8531   {
8532     Xnut,                               TRUE,   FALSE,
8533     EL_NUT,                             -1, -1
8534   },
8535   {
8536     Xnut_pause,                         FALSE,  FALSE,
8537     EL_NUT,                             -1, -1
8538   },
8539   {
8540     Xnut_fall,                          FALSE,  FALSE,
8541     EL_NUT,                             -1, -1
8542   },
8543   {
8544     Ynut_s,                             FALSE,  FALSE,
8545     EL_NUT,                             ACTION_FALLING, -1
8546   },
8547   {
8548     Ynut_sB,                            FALSE,  TRUE,
8549     EL_NUT,                             ACTION_FALLING, -1
8550   },
8551   {
8552     Ynut_e,                             FALSE,  FALSE,
8553     EL_NUT,                             ACTION_MOVING, MV_BIT_RIGHT
8554   },
8555   {
8556     Ynut_eB,                            FALSE,  TRUE,
8557     EL_NUT,                             ACTION_MOVING, MV_BIT_RIGHT
8558   },
8559   {
8560     Ynut_w,                             FALSE,  FALSE,
8561     EL_NUT,                             ACTION_MOVING, MV_BIT_LEFT
8562   },
8563   {
8564     Ynut_wB,                            FALSE,  TRUE,
8565     EL_NUT,                             ACTION_MOVING, MV_BIT_LEFT
8566   },
8567   {
8568     Ynut_stone,                         FALSE,  FALSE,
8569     EL_NUT,                             ACTION_BREAKING, -1
8570   },
8571
8572   {
8573     Xspring,                            TRUE,   FALSE,
8574     EL_SPRING,                          -1, -1
8575   },
8576   {
8577     Xspring_pause,                      FALSE,  FALSE,
8578     EL_SPRING,                          -1, -1
8579   },
8580   {
8581     Xspring_e,                          TRUE,   FALSE,
8582     EL_SPRING_RIGHT,                    -1, -1
8583   },
8584   {
8585     Xspring_w,                          TRUE,   FALSE,
8586     EL_SPRING_LEFT,                     -1, -1
8587   },
8588   {
8589     Xspring_fall,                       FALSE,  FALSE,
8590     EL_SPRING,                          -1, -1
8591   },
8592   {
8593     Yspring_s,                          FALSE,  FALSE,
8594     EL_SPRING,                          ACTION_FALLING, -1
8595   },
8596   {
8597     Yspring_sB,                         FALSE,  TRUE,
8598     EL_SPRING,                          ACTION_FALLING, -1
8599   },
8600   {
8601     Yspring_e,                          FALSE,  FALSE,
8602     EL_SPRING,                          ACTION_MOVING, MV_BIT_RIGHT
8603   },
8604   {
8605     Yspring_eB,                         FALSE,  TRUE,
8606     EL_SPRING,                          ACTION_MOVING, MV_BIT_RIGHT
8607   },
8608   {
8609     Yspring_w,                          FALSE,  FALSE,
8610     EL_SPRING,                          ACTION_MOVING, MV_BIT_LEFT
8611   },
8612   {
8613     Yspring_wB,                         FALSE,  TRUE,
8614     EL_SPRING,                          ACTION_MOVING, MV_BIT_LEFT
8615   },
8616   {
8617     Yspring_alien_e,                    FALSE,  FALSE,
8618     EL_SPRING,                          ACTION_EATING, MV_BIT_RIGHT
8619   },
8620   {
8621     Yspring_alien_eB,                   FALSE,  TRUE,
8622     EL_SPRING,                          ACTION_EATING, MV_BIT_RIGHT
8623   },
8624   {
8625     Yspring_alien_w,                    FALSE,  FALSE,
8626     EL_SPRING,                          ACTION_EATING, MV_BIT_LEFT
8627   },
8628   {
8629     Yspring_alien_wB,                   FALSE,  TRUE,
8630     EL_SPRING,                          ACTION_EATING, MV_BIT_LEFT
8631   },
8632
8633   {
8634     Xpush_emerald_e,                    FALSE,  FALSE,
8635     EL_EMERALD,                         -1, MV_BIT_RIGHT
8636   },
8637   {
8638     Xpush_emerald_w,                    FALSE,  FALSE,
8639     EL_EMERALD,                         -1, MV_BIT_LEFT
8640   },
8641   {
8642     Xpush_diamond_e,                    FALSE,  FALSE,
8643     EL_DIAMOND,                         -1, MV_BIT_RIGHT
8644   },
8645   {
8646     Xpush_diamond_w,                    FALSE,  FALSE,
8647     EL_DIAMOND,                         -1, MV_BIT_LEFT
8648   },
8649   {
8650     Xpush_stone_e,                      FALSE,  FALSE,
8651     EL_ROCK,                            -1, MV_BIT_RIGHT
8652   },
8653   {
8654     Xpush_stone_w,                      FALSE,  FALSE,
8655     EL_ROCK,                            -1, MV_BIT_LEFT
8656   },
8657   {
8658     Xpush_bomb_e,                       FALSE,  FALSE,
8659     EL_BOMB,                            -1, MV_BIT_RIGHT
8660   },
8661   {
8662     Xpush_bomb_w,                       FALSE,  FALSE,
8663     EL_BOMB,                            -1, MV_BIT_LEFT
8664   },
8665   {
8666     Xpush_nut_e,                        FALSE,  FALSE,
8667     EL_NUT,                             -1, MV_BIT_RIGHT
8668   },
8669   {
8670     Xpush_nut_w,                        FALSE,  FALSE,
8671     EL_NUT,                             -1, MV_BIT_LEFT
8672   },
8673   {
8674     Xpush_spring_e,                     FALSE,  FALSE,
8675     EL_SPRING_RIGHT,                    -1, MV_BIT_RIGHT
8676   },
8677   {
8678     Xpush_spring_w,                     FALSE,  FALSE,
8679     EL_SPRING_LEFT,                     -1, MV_BIT_LEFT
8680   },
8681
8682   {
8683     Xdynamite,                          TRUE,   FALSE,
8684     EL_EM_DYNAMITE,                     -1, -1
8685   },
8686   {
8687     Ydynamite_blank,                    FALSE,  FALSE,
8688     EL_EM_DYNAMITE,                     ACTION_COLLECTING, -1
8689   },
8690   {
8691     Xdynamite_1,                        TRUE,   FALSE,
8692     EL_EM_DYNAMITE_ACTIVE,              -1, -1
8693   },
8694   {
8695     Xdynamite_2,                        FALSE,  FALSE,
8696     EL_EM_DYNAMITE_ACTIVE,              -1, -1
8697   },
8698   {
8699     Xdynamite_3,                        FALSE,  FALSE,
8700     EL_EM_DYNAMITE_ACTIVE,              -1, -1
8701   },
8702   {
8703     Xdynamite_4,                        FALSE,  FALSE,
8704     EL_EM_DYNAMITE_ACTIVE,              -1, -1
8705   },
8706
8707   {
8708     Xkey_1,                             TRUE,   FALSE,
8709     EL_EM_KEY_1,                        -1, -1
8710   },
8711   {
8712     Xkey_2,                             TRUE,   FALSE,
8713     EL_EM_KEY_2,                        -1, -1
8714   },
8715   {
8716     Xkey_3,                             TRUE,   FALSE,
8717     EL_EM_KEY_3,                        -1, -1
8718   },
8719   {
8720     Xkey_4,                             TRUE,   FALSE,
8721     EL_EM_KEY_4,                        -1, -1
8722   },
8723   {
8724     Xkey_5,                             TRUE,   FALSE,
8725     EL_EMC_KEY_5,                       -1, -1
8726   },
8727   {
8728     Xkey_6,                             TRUE,   FALSE,
8729     EL_EMC_KEY_6,                       -1, -1
8730   },
8731   {
8732     Xkey_7,                             TRUE,   FALSE,
8733     EL_EMC_KEY_7,                       -1, -1
8734   },
8735   {
8736     Xkey_8,                             TRUE,   FALSE,
8737     EL_EMC_KEY_8,                       -1, -1
8738   },
8739
8740   {
8741     Xdoor_1,                            TRUE,   FALSE,
8742     EL_EM_GATE_1,                       -1, -1
8743   },
8744   {
8745     Xdoor_2,                            TRUE,   FALSE,
8746     EL_EM_GATE_2,                       -1, -1
8747   },
8748   {
8749     Xdoor_3,                            TRUE,   FALSE,
8750     EL_EM_GATE_3,                       -1, -1
8751   },
8752   {
8753     Xdoor_4,                            TRUE,   FALSE,
8754     EL_EM_GATE_4,                       -1, -1
8755   },
8756   {
8757     Xdoor_5,                            TRUE,   FALSE,
8758     EL_EMC_GATE_5,                      -1, -1
8759   },
8760   {
8761     Xdoor_6,                            TRUE,   FALSE,
8762     EL_EMC_GATE_6,                      -1, -1
8763   },
8764   {
8765     Xdoor_7,                            TRUE,   FALSE,
8766     EL_EMC_GATE_7,                      -1, -1
8767   },
8768   {
8769     Xdoor_8,                            TRUE,   FALSE,
8770     EL_EMC_GATE_8,                      -1, -1
8771   },
8772
8773   {
8774     Xfake_door_1,                       TRUE,   FALSE,
8775     EL_EM_GATE_1_GRAY,                  -1, -1
8776   },
8777   {
8778     Xfake_door_2,                       TRUE,   FALSE,
8779     EL_EM_GATE_2_GRAY,                  -1, -1
8780   },
8781   {
8782     Xfake_door_3,                       TRUE,   FALSE,
8783     EL_EM_GATE_3_GRAY,                  -1, -1
8784   },
8785   {
8786     Xfake_door_4,                       TRUE,   FALSE,
8787     EL_EM_GATE_4_GRAY,                  -1, -1
8788   },
8789   {
8790     Xfake_door_5,                       TRUE,   FALSE,
8791     EL_EMC_GATE_5_GRAY,                 -1, -1
8792   },
8793   {
8794     Xfake_door_6,                       TRUE,   FALSE,
8795     EL_EMC_GATE_6_GRAY,                 -1, -1
8796   },
8797   {
8798     Xfake_door_7,                       TRUE,   FALSE,
8799     EL_EMC_GATE_7_GRAY,                 -1, -1
8800   },
8801   {
8802     Xfake_door_8,                       TRUE,   FALSE,
8803     EL_EMC_GATE_8_GRAY,                 -1, -1
8804   },
8805
8806   {
8807     Xballoon,                           TRUE,   FALSE,
8808     EL_BALLOON,                         -1, -1
8809   },
8810   {
8811     Yballoon_n,                         FALSE,  FALSE,
8812     EL_BALLOON,                         ACTION_MOVING, MV_BIT_UP
8813   },
8814   {
8815     Yballoon_nB,                        FALSE,  TRUE,
8816     EL_BALLOON,                         ACTION_MOVING, MV_BIT_UP
8817   },
8818   {
8819     Yballoon_e,                         FALSE,  FALSE,
8820     EL_BALLOON,                         ACTION_MOVING, MV_BIT_RIGHT
8821   },
8822   {
8823     Yballoon_eB,                        FALSE,  TRUE,
8824     EL_BALLOON,                         ACTION_MOVING, MV_BIT_RIGHT
8825   },
8826   {
8827     Yballoon_s,                         FALSE,  FALSE,
8828     EL_BALLOON,                         ACTION_MOVING, MV_BIT_DOWN
8829   },
8830   {
8831     Yballoon_sB,                        FALSE,  TRUE,
8832     EL_BALLOON,                         ACTION_MOVING, MV_BIT_DOWN
8833   },
8834   {
8835     Yballoon_w,                         FALSE,  FALSE,
8836     EL_BALLOON,                         ACTION_MOVING, MV_BIT_LEFT
8837   },
8838   {
8839     Yballoon_wB,                        FALSE,  TRUE,
8840     EL_BALLOON,                         ACTION_MOVING, MV_BIT_LEFT
8841   },
8842
8843   {
8844     Xball_1,                            TRUE,   FALSE,
8845     EL_EMC_MAGIC_BALL,                  -1, -1
8846   },
8847   {
8848     Yball_1,                            FALSE,  FALSE,
8849     EL_EMC_MAGIC_BALL,                  ACTION_ACTIVE, -1
8850   },
8851   {
8852     Xball_2,                            FALSE,  FALSE,
8853     EL_EMC_MAGIC_BALL,                  ACTION_ACTIVE, -1
8854   },
8855   {
8856     Yball_2,                            FALSE,  FALSE,
8857     EL_EMC_MAGIC_BALL,                  ACTION_ACTIVE, -1
8858   },
8859   {
8860     Yball_blank,                        FALSE,  FALSE,
8861     EL_EMC_MAGIC_BALL,                  ACTION_DROPPING, -1
8862   },
8863
8864   {
8865     Xamoeba_1,                          TRUE,   FALSE,
8866     EL_AMOEBA_DRY,                      ACTION_OTHER, -1
8867   },
8868   {
8869     Xamoeba_2,                          FALSE,  FALSE,
8870     EL_AMOEBA_DRY,                      ACTION_OTHER, -1
8871   },
8872   {
8873     Xamoeba_3,                          FALSE,  FALSE,
8874     EL_AMOEBA_DRY,                      ACTION_OTHER, -1
8875   },
8876   {
8877     Xamoeba_4,                          FALSE,  FALSE,
8878     EL_AMOEBA_DRY,                      ACTION_OTHER, -1
8879   },
8880   {
8881     Xamoeba_5,                          TRUE,   FALSE,
8882     EL_AMOEBA_WET,                      ACTION_OTHER, -1
8883   },
8884   {
8885     Xamoeba_6,                          FALSE,  FALSE,
8886     EL_AMOEBA_WET,                      ACTION_OTHER, -1
8887   },
8888   {
8889     Xamoeba_7,                          FALSE,  FALSE,
8890     EL_AMOEBA_WET,                      ACTION_OTHER, -1
8891   },
8892   {
8893     Xamoeba_8,                          FALSE,  FALSE,
8894     EL_AMOEBA_WET,                      ACTION_OTHER, -1
8895   },
8896
8897   {
8898     Xdrip,                              TRUE,   FALSE,
8899     EL_AMOEBA_DROP,                     ACTION_GROWING, -1
8900   },
8901   {
8902     Xdrip_fall,                         FALSE,  FALSE,
8903     EL_AMOEBA_DROP,                     -1, -1
8904   },
8905   {
8906     Xdrip_stretch,                      FALSE,  FALSE,
8907     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
8908   },
8909   {
8910     Xdrip_stretchB,                     FALSE,  TRUE,
8911     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
8912   },
8913   {
8914     Ydrip_1_s,                          FALSE,  FALSE,
8915     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
8916   },
8917   {
8918     Ydrip_1_sB,                         FALSE,  TRUE,
8919     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
8920   },
8921   {
8922     Ydrip_2_s,                          FALSE,  FALSE,
8923     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
8924   },
8925   {
8926     Ydrip_2_sB,                         FALSE,  TRUE,
8927     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
8928   },
8929
8930   {
8931     Xwonderwall,                        TRUE,   FALSE,
8932     EL_MAGIC_WALL,                      -1, -1
8933   },
8934   {
8935     Ywonderwall,                        FALSE,  FALSE,
8936     EL_MAGIC_WALL,                      ACTION_ACTIVE, -1
8937   },
8938
8939   {
8940     Xwheel,                             TRUE,   FALSE,
8941     EL_ROBOT_WHEEL,                     -1, -1
8942   },
8943   {
8944     Ywheel,                             FALSE,  FALSE,
8945     EL_ROBOT_WHEEL,                     ACTION_ACTIVE, -1
8946   },
8947
8948   {
8949     Xswitch,                            TRUE,   FALSE,
8950     EL_EMC_MAGIC_BALL_SWITCH,           -1, -1
8951   },
8952   {
8953     Yswitch,                            FALSE,  FALSE,
8954     EL_EMC_MAGIC_BALL_SWITCH,           ACTION_ACTIVE, -1
8955   },
8956
8957   {
8958     Xbumper,                            TRUE,   FALSE,
8959     EL_EMC_SPRING_BUMPER,               -1, -1
8960   },
8961   {
8962     Ybumper,                            FALSE,  FALSE,
8963     EL_EMC_SPRING_BUMPER,               ACTION_ACTIVE, -1
8964   },
8965
8966   {
8967     Xacid_nw,                           TRUE,   FALSE,
8968     EL_ACID_POOL_TOPLEFT,               -1, -1
8969   },
8970   {
8971     Xacid_ne,                           TRUE,   FALSE,
8972     EL_ACID_POOL_TOPRIGHT,              -1, -1
8973   },
8974   {
8975     Xacid_sw,                           TRUE,   FALSE,
8976     EL_ACID_POOL_BOTTOMLEFT,            -1, -1
8977   },
8978   {
8979     Xacid_s,                            TRUE,   FALSE,
8980     EL_ACID_POOL_BOTTOM,                -1, -1
8981   },
8982   {
8983     Xacid_se,                           TRUE,   FALSE,
8984     EL_ACID_POOL_BOTTOMRIGHT,           -1, -1
8985   },
8986
8987   {
8988     Xfake_blank,                        TRUE,   FALSE,
8989     EL_INVISIBLE_WALL,                  -1, -1
8990   },
8991   {
8992     Yfake_blank,                        FALSE,  FALSE,
8993     EL_INVISIBLE_WALL,                  ACTION_ACTIVE, -1
8994   },
8995
8996   {
8997     Xfake_grass,                        TRUE,   FALSE,
8998     EL_EMC_FAKE_GRASS,                  -1, -1
8999   },
9000   {
9001     Yfake_grass,                        FALSE,  FALSE,
9002     EL_EMC_FAKE_GRASS,                  ACTION_ACTIVE, -1
9003   },
9004
9005   {
9006     Xfake_amoeba,                       TRUE,   FALSE,
9007     EL_EMC_DRIPPER,                     -1, -1
9008   },
9009   {
9010     Yfake_amoeba,                       FALSE,  FALSE,
9011     EL_EMC_DRIPPER,                     ACTION_ACTIVE, -1
9012   },
9013
9014   {
9015     Xlenses,                            TRUE,   FALSE,
9016     EL_EMC_LENSES,                      -1, -1
9017   },
9018
9019   {
9020     Xmagnify,                           TRUE,   FALSE,
9021     EL_EMC_MAGNIFIER,                   -1, -1
9022   },
9023
9024   {
9025     Xsand,                              TRUE,   FALSE,
9026     EL_QUICKSAND_EMPTY,                 -1, -1
9027   },
9028   {
9029     Xsand_stone,                        TRUE,   FALSE,
9030     EL_QUICKSAND_FULL,                  -1, -1
9031   },
9032   {
9033     Xsand_stonein_1,                    FALSE,  TRUE,
9034     EL_ROCK,                            ACTION_FILLING, -1
9035   },
9036   {
9037     Xsand_stonein_2,                    FALSE,  TRUE,
9038     EL_ROCK,                            ACTION_FILLING, -1
9039   },
9040   {
9041     Xsand_stonein_3,                    FALSE,  TRUE,
9042     EL_ROCK,                            ACTION_FILLING, -1
9043   },
9044   {
9045     Xsand_stonein_4,                    FALSE,  TRUE,
9046     EL_ROCK,                            ACTION_FILLING, -1
9047   },
9048   {
9049     Xsand_sandstone_1,                  FALSE,  FALSE,
9050     EL_QUICKSAND_FILLING,               -1, -1
9051   },
9052   {
9053     Xsand_sandstone_2,                  FALSE,  FALSE,
9054     EL_QUICKSAND_FILLING,               -1, -1
9055   },
9056   {
9057     Xsand_sandstone_3,                  FALSE,  FALSE,
9058     EL_QUICKSAND_FILLING,               -1, -1
9059   },
9060   {
9061     Xsand_sandstone_4,                  FALSE,  FALSE,
9062     EL_QUICKSAND_FILLING,               -1, -1
9063   },
9064   {
9065     Xsand_stonesand_1,                  FALSE,  FALSE,
9066     EL_QUICKSAND_EMPTYING,              -1, -1
9067   },
9068   {
9069     Xsand_stonesand_2,                  FALSE,  FALSE,
9070     EL_QUICKSAND_EMPTYING,              -1, -1
9071   },
9072   {
9073     Xsand_stonesand_3,                  FALSE,  FALSE,
9074     EL_QUICKSAND_EMPTYING,              -1, -1
9075   },
9076   {
9077     Xsand_stonesand_4,                  FALSE,  FALSE,
9078     EL_QUICKSAND_EMPTYING,              -1, -1
9079   },
9080   {
9081     Xsand_stoneout_1,                   FALSE,  FALSE,
9082     EL_ROCK,                            ACTION_EMPTYING, -1
9083   },
9084   {
9085     Xsand_stoneout_2,                   FALSE,  FALSE,
9086     EL_ROCK,                            ACTION_EMPTYING, -1
9087   },
9088   {
9089     Xsand_stonesand_quickout_1,         FALSE,  FALSE,
9090     EL_QUICKSAND_EMPTYING,              -1, -1
9091   },
9092   {
9093     Xsand_stonesand_quickout_2,         FALSE,  FALSE,
9094     EL_QUICKSAND_EMPTYING,              -1, -1
9095   },
9096
9097   {
9098     Xslide_ns,                          TRUE,   FALSE,
9099     EL_EXPANDABLE_WALL_VERTICAL,        -1, -1
9100   },
9101   {
9102     Yslide_ns_blank,                    FALSE,  FALSE,
9103     EL_EXPANDABLE_WALL_VERTICAL,        ACTION_GROWING, -1
9104   },
9105   {
9106     Xslide_ew,                          TRUE,   FALSE,
9107     EL_EXPANDABLE_WALL_HORIZONTAL,      -1, -1
9108   },
9109   {
9110     Yslide_ew_blank,                    FALSE,  FALSE,
9111     EL_EXPANDABLE_WALL_HORIZONTAL,      ACTION_GROWING, -1
9112   },
9113
9114   {
9115     Xwind_n,                            TRUE,   FALSE,
9116     EL_BALLOON_SWITCH_UP,               -1, -1
9117   },
9118   {
9119     Xwind_e,                            TRUE,   FALSE,
9120     EL_BALLOON_SWITCH_RIGHT,            -1, -1
9121   },
9122   {
9123     Xwind_s,                            TRUE,   FALSE,
9124     EL_BALLOON_SWITCH_DOWN,             -1, -1
9125   },
9126   {
9127     Xwind_w,                            TRUE,   FALSE,
9128     EL_BALLOON_SWITCH_LEFT,             -1, -1
9129   },
9130   {
9131     Xwind_any,                          TRUE,   FALSE,
9132     EL_BALLOON_SWITCH_ANY,              -1, -1
9133   },
9134   {
9135     Xwind_stop,                         TRUE,   FALSE,
9136     EL_BALLOON_SWITCH_NONE,             -1, -1
9137   },
9138
9139   {
9140     Xexit,                              TRUE,   FALSE,
9141     EL_EM_EXIT_CLOSED,                  -1, -1
9142   },
9143   {
9144     Xexit_1,                            TRUE,   FALSE,
9145     EL_EM_EXIT_OPEN,                    -1, -1
9146   },
9147   {
9148     Xexit_2,                            FALSE,  FALSE,
9149     EL_EM_EXIT_OPEN,                    -1, -1
9150   },
9151   {
9152     Xexit_3,                            FALSE,  FALSE,
9153     EL_EM_EXIT_OPEN,                    -1, -1
9154   },
9155
9156   {
9157     Xpause,                             FALSE,  FALSE,
9158     EL_EMPTY,                           -1, -1
9159   },
9160
9161   {
9162     Xwall_1,                            TRUE,   FALSE,
9163     EL_WALL,                            -1, -1
9164   },
9165   {
9166     Xwall_2,                            TRUE,   FALSE,
9167     EL_EMC_WALL_14,                     -1, -1
9168   },
9169   {
9170     Xwall_3,                            TRUE,   FALSE,
9171     EL_EMC_WALL_15,                     -1, -1
9172   },
9173   {
9174     Xwall_4,                            TRUE,   FALSE,
9175     EL_EMC_WALL_16,                     -1, -1
9176   },
9177
9178   {
9179     Xroundwall_1,                       TRUE,   FALSE,
9180     EL_WALL_SLIPPERY,                   -1, -1
9181   },
9182   {
9183     Xroundwall_2,                       TRUE,   FALSE,
9184     EL_EMC_WALL_SLIPPERY_2,             -1, -1
9185   },
9186   {
9187     Xroundwall_3,                       TRUE,   FALSE,
9188     EL_EMC_WALL_SLIPPERY_3,             -1, -1
9189   },
9190   {
9191     Xroundwall_4,                       TRUE,   FALSE,
9192     EL_EMC_WALL_SLIPPERY_4,             -1, -1
9193   },
9194
9195   {
9196     Xsteel_1,                           TRUE,   FALSE,
9197     EL_STEELWALL,                       -1, -1
9198   },
9199   {
9200     Xsteel_2,                           TRUE,   FALSE,
9201     EL_EMC_STEELWALL_2,                 -1, -1
9202   },
9203   {
9204     Xsteel_3,                           TRUE,   FALSE,
9205     EL_EMC_STEELWALL_3,                 -1, -1
9206   },
9207   {
9208     Xsteel_4,                           TRUE,   FALSE,
9209     EL_EMC_STEELWALL_4,                 -1, -1
9210   },
9211
9212   {
9213     Xdecor_1,                           TRUE,   FALSE,
9214     EL_EMC_WALL_8,                      -1, -1
9215   },
9216   {
9217     Xdecor_2,                           TRUE,   FALSE,
9218     EL_EMC_WALL_6,                      -1, -1
9219   },
9220   {
9221     Xdecor_3,                           TRUE,   FALSE,
9222     EL_EMC_WALL_4,                      -1, -1
9223   },
9224   {
9225     Xdecor_4,                           TRUE,   FALSE,
9226     EL_EMC_WALL_7,                      -1, -1
9227   },
9228   {
9229     Xdecor_5,                           TRUE,   FALSE,
9230     EL_EMC_WALL_5,                      -1, -1
9231   },
9232   {
9233     Xdecor_6,                           TRUE,   FALSE,
9234     EL_EMC_WALL_9,                      -1, -1
9235   },
9236   {
9237     Xdecor_7,                           TRUE,   FALSE,
9238     EL_EMC_WALL_10,                     -1, -1
9239   },
9240   {
9241     Xdecor_8,                           TRUE,   FALSE,
9242     EL_EMC_WALL_1,                      -1, -1
9243   },
9244   {
9245     Xdecor_9,                           TRUE,   FALSE,
9246     EL_EMC_WALL_2,                      -1, -1
9247   },
9248   {
9249     Xdecor_10,                          TRUE,   FALSE,
9250     EL_EMC_WALL_3,                      -1, -1
9251   },
9252   {
9253     Xdecor_11,                          TRUE,   FALSE,
9254     EL_EMC_WALL_11,                     -1, -1
9255   },
9256   {
9257     Xdecor_12,                          TRUE,   FALSE,
9258     EL_EMC_WALL_12,                     -1, -1
9259   },
9260
9261   {
9262     Xalpha_0,                           TRUE,   FALSE,
9263     EL_CHAR('0'),                       -1, -1
9264   },
9265   {
9266     Xalpha_1,                           TRUE,   FALSE,
9267     EL_CHAR('1'),                       -1, -1
9268   },
9269   {
9270     Xalpha_2,                           TRUE,   FALSE,
9271     EL_CHAR('2'),                       -1, -1
9272   },
9273   {
9274     Xalpha_3,                           TRUE,   FALSE,
9275     EL_CHAR('3'),                       -1, -1
9276   },
9277   {
9278     Xalpha_4,                           TRUE,   FALSE,
9279     EL_CHAR('4'),                       -1, -1
9280   },
9281   {
9282     Xalpha_5,                           TRUE,   FALSE,
9283     EL_CHAR('5'),                       -1, -1
9284   },
9285   {
9286     Xalpha_6,                           TRUE,   FALSE,
9287     EL_CHAR('6'),                       -1, -1
9288   },
9289   {
9290     Xalpha_7,                           TRUE,   FALSE,
9291     EL_CHAR('7'),                       -1, -1
9292   },
9293   {
9294     Xalpha_8,                           TRUE,   FALSE,
9295     EL_CHAR('8'),                       -1, -1
9296   },
9297   {
9298     Xalpha_9,                           TRUE,   FALSE,
9299     EL_CHAR('9'),                       -1, -1
9300   },
9301   {
9302     Xalpha_excla,                       TRUE,   FALSE,
9303     EL_CHAR('!'),                       -1, -1
9304   },
9305   {
9306     Xalpha_apost,                       TRUE,   FALSE,
9307     EL_CHAR('\''),                      -1, -1
9308   },
9309   {
9310     Xalpha_comma,                       TRUE,   FALSE,
9311     EL_CHAR(','),                       -1, -1
9312   },
9313   {
9314     Xalpha_minus,                       TRUE,   FALSE,
9315     EL_CHAR('-'),                       -1, -1
9316   },
9317   {
9318     Xalpha_perio,                       TRUE,   FALSE,
9319     EL_CHAR('.'),                       -1, -1
9320   },
9321   {
9322     Xalpha_colon,                       TRUE,   FALSE,
9323     EL_CHAR(':'),                       -1, -1
9324   },
9325   {
9326     Xalpha_quest,                       TRUE,   FALSE,
9327     EL_CHAR('?'),                       -1, -1
9328   },
9329   {
9330     Xalpha_a,                           TRUE,   FALSE,
9331     EL_CHAR('A'),                       -1, -1
9332   },
9333   {
9334     Xalpha_b,                           TRUE,   FALSE,
9335     EL_CHAR('B'),                       -1, -1
9336   },
9337   {
9338     Xalpha_c,                           TRUE,   FALSE,
9339     EL_CHAR('C'),                       -1, -1
9340   },
9341   {
9342     Xalpha_d,                           TRUE,   FALSE,
9343     EL_CHAR('D'),                       -1, -1
9344   },
9345   {
9346     Xalpha_e,                           TRUE,   FALSE,
9347     EL_CHAR('E'),                       -1, -1
9348   },
9349   {
9350     Xalpha_f,                           TRUE,   FALSE,
9351     EL_CHAR('F'),                       -1, -1
9352   },
9353   {
9354     Xalpha_g,                           TRUE,   FALSE,
9355     EL_CHAR('G'),                       -1, -1
9356   },
9357   {
9358     Xalpha_h,                           TRUE,   FALSE,
9359     EL_CHAR('H'),                       -1, -1
9360   },
9361   {
9362     Xalpha_i,                           TRUE,   FALSE,
9363     EL_CHAR('I'),                       -1, -1
9364   },
9365   {
9366     Xalpha_j,                           TRUE,   FALSE,
9367     EL_CHAR('J'),                       -1, -1
9368   },
9369   {
9370     Xalpha_k,                           TRUE,   FALSE,
9371     EL_CHAR('K'),                       -1, -1
9372   },
9373   {
9374     Xalpha_l,                           TRUE,   FALSE,
9375     EL_CHAR('L'),                       -1, -1
9376   },
9377   {
9378     Xalpha_m,                           TRUE,   FALSE,
9379     EL_CHAR('M'),                       -1, -1
9380   },
9381   {
9382     Xalpha_n,                           TRUE,   FALSE,
9383     EL_CHAR('N'),                       -1, -1
9384   },
9385   {
9386     Xalpha_o,                           TRUE,   FALSE,
9387     EL_CHAR('O'),                       -1, -1
9388   },
9389   {
9390     Xalpha_p,                           TRUE,   FALSE,
9391     EL_CHAR('P'),                       -1, -1
9392   },
9393   {
9394     Xalpha_q,                           TRUE,   FALSE,
9395     EL_CHAR('Q'),                       -1, -1
9396   },
9397   {
9398     Xalpha_r,                           TRUE,   FALSE,
9399     EL_CHAR('R'),                       -1, -1
9400   },
9401   {
9402     Xalpha_s,                           TRUE,   FALSE,
9403     EL_CHAR('S'),                       -1, -1
9404   },
9405   {
9406     Xalpha_t,                           TRUE,   FALSE,
9407     EL_CHAR('T'),                       -1, -1
9408   },
9409   {
9410     Xalpha_u,                           TRUE,   FALSE,
9411     EL_CHAR('U'),                       -1, -1
9412   },
9413   {
9414     Xalpha_v,                           TRUE,   FALSE,
9415     EL_CHAR('V'),                       -1, -1
9416   },
9417   {
9418     Xalpha_w,                           TRUE,   FALSE,
9419     EL_CHAR('W'),                       -1, -1
9420   },
9421   {
9422     Xalpha_x,                           TRUE,   FALSE,
9423     EL_CHAR('X'),                       -1, -1
9424   },
9425   {
9426     Xalpha_y,                           TRUE,   FALSE,
9427     EL_CHAR('Y'),                       -1, -1
9428   },
9429   {
9430     Xalpha_z,                           TRUE,   FALSE,
9431     EL_CHAR('Z'),                       -1, -1
9432   },
9433   {
9434     Xalpha_arrow_e,                     TRUE,   FALSE,
9435     EL_CHAR('>'),                       -1, -1
9436   },
9437   {
9438     Xalpha_arrow_w,                     TRUE,   FALSE,
9439     EL_CHAR('<'),                       -1, -1
9440   },
9441   {
9442     Xalpha_copyr,                       TRUE,   FALSE,
9443     EL_CHAR(CHAR_BYTE_COPYRIGHT),       -1, -1
9444   },
9445
9446   {
9447     Ykey_1_blank,                       FALSE,  FALSE,
9448     EL_EM_KEY_1,                        ACTION_COLLECTING, -1
9449   },
9450   {
9451     Ykey_2_blank,                       FALSE,  FALSE,
9452     EL_EM_KEY_2,                        ACTION_COLLECTING, -1
9453   },
9454   {
9455     Ykey_3_blank,                       FALSE,  FALSE,
9456     EL_EM_KEY_3,                        ACTION_COLLECTING, -1
9457   },
9458   {
9459     Ykey_4_blank,                       FALSE,  FALSE,
9460     EL_EM_KEY_4,                        ACTION_COLLECTING, -1
9461   },
9462   {
9463     Ykey_5_blank,                       FALSE,  FALSE,
9464     EL_EMC_KEY_5,                       ACTION_COLLECTING, -1
9465   },
9466   {
9467     Ykey_6_blank,                       FALSE,  FALSE,
9468     EL_EMC_KEY_6,                       ACTION_COLLECTING, -1
9469   },
9470   {
9471     Ykey_7_blank,                       FALSE,  FALSE,
9472     EL_EMC_KEY_7,                       ACTION_COLLECTING, -1
9473   },
9474   {
9475     Ykey_8_blank,                       FALSE,  FALSE,
9476     EL_EMC_KEY_8,                       ACTION_COLLECTING, -1
9477   },
9478   {
9479     Ylenses_blank,                      FALSE,  FALSE,
9480     EL_EMC_LENSES,                      ACTION_COLLECTING, -1
9481   },
9482   {
9483     Ymagnify_blank,                     FALSE,  FALSE,
9484     EL_EMC_MAGNIFIER,                   ACTION_COLLECTING, -1
9485   },
9486   {
9487     Ygrass_blank,                       FALSE,  FALSE,
9488     EL_EMC_GRASS,                       ACTION_SNAPPING, -1
9489   },
9490   {
9491     Ydirt_blank,                        FALSE,  FALSE,
9492     EL_SAND,                            ACTION_SNAPPING, -1
9493   },
9494
9495   {
9496     -1,                                 FALSE,  FALSE,
9497     -1,                                 -1, -1
9498   }
9499 };
9500
9501 static struct Mapping_EM_to_RND_player
9502 {
9503   int action_em;
9504   int player_nr;
9505
9506   int element_rnd;
9507   int action;
9508   int direction;
9509 }
9510 em_player_mapping_list[MAX_PLAYERS * PLY_MAX + 1] =
9511 {
9512   {
9513     PLY_walk_n,                         0,
9514     EL_PLAYER_1,                        ACTION_MOVING, MV_BIT_UP,
9515   },
9516   {
9517     PLY_walk_e,                         0,
9518     EL_PLAYER_1,                        ACTION_MOVING, MV_BIT_RIGHT,
9519   },
9520   {
9521     PLY_walk_s,                         0,
9522     EL_PLAYER_1,                        ACTION_MOVING, MV_BIT_DOWN,
9523   },
9524   {
9525     PLY_walk_w,                         0,
9526     EL_PLAYER_1,                        ACTION_MOVING, MV_BIT_LEFT,
9527   },
9528   {
9529     PLY_push_n,                         0,
9530     EL_PLAYER_1,                        ACTION_PUSHING, MV_BIT_UP,
9531   },
9532   {
9533     PLY_push_e,                         0,
9534     EL_PLAYER_1,                        ACTION_PUSHING, MV_BIT_RIGHT,
9535   },
9536   {
9537     PLY_push_s,                         0,
9538     EL_PLAYER_1,                        ACTION_PUSHING, MV_BIT_DOWN,
9539   },
9540   {
9541     PLY_push_w,                         0,
9542     EL_PLAYER_1,                        ACTION_PUSHING, MV_BIT_LEFT,
9543   },
9544   {
9545     PLY_shoot_n,                        0,
9546     EL_PLAYER_1,                        ACTION_SNAPPING, MV_BIT_UP,
9547   },
9548   {
9549     PLY_shoot_e,                        0,
9550     EL_PLAYER_1,                        ACTION_SNAPPING, MV_BIT_RIGHT,
9551   },
9552   {
9553     PLY_shoot_s,                        0,
9554     EL_PLAYER_1,                        ACTION_SNAPPING, MV_BIT_DOWN,
9555   },
9556   {
9557     PLY_shoot_w,                        0,
9558     EL_PLAYER_1,                        ACTION_SNAPPING, MV_BIT_LEFT,
9559   },
9560   {
9561     PLY_walk_n,                         1,
9562     EL_PLAYER_2,                        ACTION_MOVING, MV_BIT_UP,
9563   },
9564   {
9565     PLY_walk_e,                         1,
9566     EL_PLAYER_2,                        ACTION_MOVING, MV_BIT_RIGHT,
9567   },
9568   {
9569     PLY_walk_s,                         1,
9570     EL_PLAYER_2,                        ACTION_MOVING, MV_BIT_DOWN,
9571   },
9572   {
9573     PLY_walk_w,                         1,
9574     EL_PLAYER_2,                        ACTION_MOVING, MV_BIT_LEFT,
9575   },
9576   {
9577     PLY_push_n,                         1,
9578     EL_PLAYER_2,                        ACTION_PUSHING, MV_BIT_UP,
9579   },
9580   {
9581     PLY_push_e,                         1,
9582     EL_PLAYER_2,                        ACTION_PUSHING, MV_BIT_RIGHT,
9583   },
9584   {
9585     PLY_push_s,                         1,
9586     EL_PLAYER_2,                        ACTION_PUSHING, MV_BIT_DOWN,
9587   },
9588   {
9589     PLY_push_w,                         1,
9590     EL_PLAYER_2,                        ACTION_PUSHING, MV_BIT_LEFT,
9591   },
9592   {
9593     PLY_shoot_n,                        1,
9594     EL_PLAYER_2,                        ACTION_SNAPPING, MV_BIT_UP,
9595   },
9596   {
9597     PLY_shoot_e,                        1,
9598     EL_PLAYER_2,                        ACTION_SNAPPING, MV_BIT_RIGHT,
9599   },
9600   {
9601     PLY_shoot_s,                        1,
9602     EL_PLAYER_2,                        ACTION_SNAPPING, MV_BIT_DOWN,
9603   },
9604   {
9605     PLY_shoot_w,                        1,
9606     EL_PLAYER_2,                        ACTION_SNAPPING, MV_BIT_LEFT,
9607   },
9608   {
9609     PLY_still,                          0,
9610     EL_PLAYER_1,                        ACTION_DEFAULT, -1,
9611   },
9612   {
9613     PLY_still,                          1,
9614     EL_PLAYER_2,                        ACTION_DEFAULT, -1,
9615   },
9616   {
9617     PLY_walk_n,                         2,
9618     EL_PLAYER_3,                        ACTION_MOVING, MV_BIT_UP,
9619   },
9620   {
9621     PLY_walk_e,                         2,
9622     EL_PLAYER_3,                        ACTION_MOVING, MV_BIT_RIGHT,
9623   },
9624   {
9625     PLY_walk_s,                         2,
9626     EL_PLAYER_3,                        ACTION_MOVING, MV_BIT_DOWN,
9627   },
9628   {
9629     PLY_walk_w,                         2,
9630     EL_PLAYER_3,                        ACTION_MOVING, MV_BIT_LEFT,
9631   },
9632   {
9633     PLY_push_n,                         2,
9634     EL_PLAYER_3,                        ACTION_PUSHING, MV_BIT_UP,
9635   },
9636   {
9637     PLY_push_e,                         2,
9638     EL_PLAYER_3,                        ACTION_PUSHING, MV_BIT_RIGHT,
9639   },
9640   {
9641     PLY_push_s,                         2,
9642     EL_PLAYER_3,                        ACTION_PUSHING, MV_BIT_DOWN,
9643   },
9644   {
9645     PLY_push_w,                         2,
9646     EL_PLAYER_3,                        ACTION_PUSHING, MV_BIT_LEFT,
9647   },
9648   {
9649     PLY_shoot_n,                        2,
9650     EL_PLAYER_3,                        ACTION_SNAPPING, MV_BIT_UP,
9651   },
9652   {
9653     PLY_shoot_e,                        2,
9654     EL_PLAYER_3,                        ACTION_SNAPPING, MV_BIT_RIGHT,
9655   },
9656   {
9657     PLY_shoot_s,                        2,
9658     EL_PLAYER_3,                        ACTION_SNAPPING, MV_BIT_DOWN,
9659   },
9660   {
9661     PLY_shoot_w,                        2,
9662     EL_PLAYER_3,                        ACTION_SNAPPING, MV_BIT_LEFT,
9663   },
9664   {
9665     PLY_walk_n,                         3,
9666     EL_PLAYER_4,                        ACTION_MOVING, MV_BIT_UP,
9667   },
9668   {
9669     PLY_walk_e,                         3,
9670     EL_PLAYER_4,                        ACTION_MOVING, MV_BIT_RIGHT,
9671   },
9672   {
9673     PLY_walk_s,                         3,
9674     EL_PLAYER_4,                        ACTION_MOVING, MV_BIT_DOWN,
9675   },
9676   {
9677     PLY_walk_w,                         3,
9678     EL_PLAYER_4,                        ACTION_MOVING, MV_BIT_LEFT,
9679   },
9680   {
9681     PLY_push_n,                         3,
9682     EL_PLAYER_4,                        ACTION_PUSHING, MV_BIT_UP,
9683   },
9684   {
9685     PLY_push_e,                         3,
9686     EL_PLAYER_4,                        ACTION_PUSHING, MV_BIT_RIGHT,
9687   },
9688   {
9689     PLY_push_s,                         3,
9690     EL_PLAYER_4,                        ACTION_PUSHING, MV_BIT_DOWN,
9691   },
9692   {
9693     PLY_push_w,                         3,
9694     EL_PLAYER_4,                        ACTION_PUSHING, MV_BIT_LEFT,
9695   },
9696   {
9697     PLY_shoot_n,                        3,
9698     EL_PLAYER_4,                        ACTION_SNAPPING, MV_BIT_UP,
9699   },
9700   {
9701     PLY_shoot_e,                        3,
9702     EL_PLAYER_4,                        ACTION_SNAPPING, MV_BIT_RIGHT,
9703   },
9704   {
9705     PLY_shoot_s,                        3,
9706     EL_PLAYER_4,                        ACTION_SNAPPING, MV_BIT_DOWN,
9707   },
9708   {
9709     PLY_shoot_w,                        3,
9710     EL_PLAYER_4,                        ACTION_SNAPPING, MV_BIT_LEFT,
9711   },
9712   {
9713     PLY_still,                          2,
9714     EL_PLAYER_3,                        ACTION_DEFAULT, -1,
9715   },
9716   {
9717     PLY_still,                          3,
9718     EL_PLAYER_4,                        ACTION_DEFAULT, -1,
9719   },
9720
9721   {
9722     -1,                                 -1,
9723     -1,                                 -1, -1
9724   }
9725 };
9726
9727 int map_element_RND_to_EM_cave(int element_rnd)
9728 {
9729   static unsigned short mapping_RND_to_EM[NUM_FILE_ELEMENTS];
9730   static boolean mapping_initialized = FALSE;
9731
9732   if (!mapping_initialized)
9733   {
9734     int i;
9735
9736     // return "Xalpha_quest" for all undefined elements in mapping array
9737     for (i = 0; i < NUM_FILE_ELEMENTS; i++)
9738       mapping_RND_to_EM[i] = Xalpha_quest;
9739
9740     for (i = 0; em_object_mapping_list[i].element_em != -1; i++)
9741       if (em_object_mapping_list[i].is_rnd_to_em_mapping)
9742         mapping_RND_to_EM[em_object_mapping_list[i].element_rnd] =
9743           em_object_mapping_list[i].element_em;
9744
9745     mapping_initialized = TRUE;
9746   }
9747
9748   if (element_rnd < 0 || element_rnd >= NUM_FILE_ELEMENTS)
9749   {
9750     Warn("invalid RND level element %d", element_rnd);
9751
9752     return EL_UNKNOWN;
9753   }
9754
9755   return map_em_element_X_to_C(mapping_RND_to_EM[element_rnd]);
9756 }
9757
9758 int map_element_EM_to_RND_cave(int element_em_cave)
9759 {
9760   static unsigned short mapping_EM_to_RND[GAME_TILE_MAX];
9761   static boolean mapping_initialized = FALSE;
9762
9763   if (!mapping_initialized)
9764   {
9765     int i;
9766
9767     // return "EL_UNKNOWN" for all undefined elements in mapping array
9768     for (i = 0; i < GAME_TILE_MAX; i++)
9769       mapping_EM_to_RND[i] = EL_UNKNOWN;
9770
9771     for (i = 0; em_object_mapping_list[i].element_em != -1; i++)
9772       mapping_EM_to_RND[em_object_mapping_list[i].element_em] =
9773         em_object_mapping_list[i].element_rnd;
9774
9775     mapping_initialized = TRUE;
9776   }
9777
9778   if (element_em_cave < 0 || element_em_cave >= CAVE_TILE_MAX)
9779   {
9780     Warn("invalid EM cave element %d", element_em_cave);
9781
9782     return EL_UNKNOWN;
9783   }
9784
9785   return mapping_EM_to_RND[map_em_element_C_to_X(element_em_cave)];
9786 }
9787
9788 int map_element_EM_to_RND_game(int element_em_game)
9789 {
9790   static unsigned short mapping_EM_to_RND[GAME_TILE_MAX];
9791   static boolean mapping_initialized = FALSE;
9792
9793   if (!mapping_initialized)
9794   {
9795     int i;
9796
9797     // return "EL_UNKNOWN" for all undefined elements in mapping array
9798     for (i = 0; i < GAME_TILE_MAX; i++)
9799       mapping_EM_to_RND[i] = EL_UNKNOWN;
9800
9801     for (i = 0; em_object_mapping_list[i].element_em != -1; i++)
9802       mapping_EM_to_RND[em_object_mapping_list[i].element_em] =
9803         em_object_mapping_list[i].element_rnd;
9804
9805     mapping_initialized = TRUE;
9806   }
9807
9808   if (element_em_game < 0 || element_em_game >= GAME_TILE_MAX)
9809   {
9810     Warn("invalid EM game element %d", element_em_game);
9811
9812     return EL_UNKNOWN;
9813   }
9814
9815   return mapping_EM_to_RND[element_em_game];
9816 }
9817
9818 void map_android_clone_elements_RND_to_EM(struct LevelInfo *level)
9819 {
9820   struct LevelInfo_EM *level_em = level->native_em_level;
9821   struct CAVE *cav = level_em->cav;
9822   int i, j;
9823
9824   for (i = 0; i < GAME_TILE_MAX; i++)
9825     cav->android_array[i] = Cblank;
9826
9827   for (i = 0; i < level->num_android_clone_elements; i++)
9828   {
9829     int element_rnd = level->android_clone_element[i];
9830     int element_em_cave = map_element_RND_to_EM_cave(element_rnd);
9831
9832     for (j = 0; em_object_mapping_list[j].element_em != -1; j++)
9833       if (em_object_mapping_list[j].element_rnd == element_rnd)
9834         cav->android_array[em_object_mapping_list[j].element_em] =
9835           element_em_cave;
9836   }
9837 }
9838
9839 void map_android_clone_elements_EM_to_RND(struct LevelInfo *level)
9840 {
9841   struct LevelInfo_EM *level_em = level->native_em_level;
9842   struct CAVE *cav = level_em->cav;
9843   int i, j;
9844
9845   level->num_android_clone_elements = 0;
9846
9847   for (i = 0; i < GAME_TILE_MAX; i++)
9848   {
9849     int element_em_cave = cav->android_array[i];
9850     int element_rnd;
9851     boolean element_found = FALSE;
9852
9853     if (element_em_cave == Cblank)
9854       continue;
9855
9856     element_rnd = map_element_EM_to_RND_cave(element_em_cave);
9857
9858     for (j = 0; j < level->num_android_clone_elements; j++)
9859       if (level->android_clone_element[j] == element_rnd)
9860         element_found = TRUE;
9861
9862     if (!element_found)
9863     {
9864       level->android_clone_element[level->num_android_clone_elements++] =
9865         element_rnd;
9866
9867       if (level->num_android_clone_elements == MAX_ANDROID_ELEMENTS)
9868         break;
9869     }
9870   }
9871
9872   if (level->num_android_clone_elements == 0)
9873   {
9874     level->num_android_clone_elements = 1;
9875     level->android_clone_element[0] = EL_EMPTY;
9876   }
9877 }
9878
9879 int map_direction_RND_to_EM(int direction)
9880 {
9881   return (direction == MV_UP    ? 0 :
9882           direction == MV_RIGHT ? 1 :
9883           direction == MV_DOWN  ? 2 :
9884           direction == MV_LEFT  ? 3 :
9885           -1);
9886 }
9887
9888 int map_direction_EM_to_RND(int direction)
9889 {
9890   return (direction == 0 ? MV_UP    :
9891           direction == 1 ? MV_RIGHT :
9892           direction == 2 ? MV_DOWN  :
9893           direction == 3 ? MV_LEFT  :
9894           MV_NONE);
9895 }
9896
9897 int map_element_RND_to_SP(int element_rnd)
9898 {
9899   int element_sp = 0x20;        // map unknown elements to yellow "hardware"
9900
9901   if (element_rnd >= EL_SP_START &&
9902       element_rnd <= EL_SP_END)
9903     element_sp = element_rnd - EL_SP_START;
9904   else if (element_rnd == EL_EMPTY_SPACE)
9905     element_sp = 0x00;
9906   else if (element_rnd == EL_INVISIBLE_WALL)
9907     element_sp = 0x28;
9908
9909   return element_sp;
9910 }
9911
9912 int map_element_SP_to_RND(int element_sp)
9913 {
9914   int element_rnd = EL_UNKNOWN;
9915
9916   if (element_sp >= 0x00 &&
9917       element_sp <= 0x27)
9918     element_rnd = EL_SP_START + element_sp;
9919   else if (element_sp == 0x28)
9920     element_rnd = EL_INVISIBLE_WALL;
9921
9922   return element_rnd;
9923 }
9924
9925 int map_action_SP_to_RND(int action_sp)
9926 {
9927   switch (action_sp)
9928   {
9929     case actActive:             return ACTION_ACTIVE;
9930     case actImpact:             return ACTION_IMPACT;
9931     case actExploding:          return ACTION_EXPLODING;
9932     case actDigging:            return ACTION_DIGGING;
9933     case actSnapping:           return ACTION_SNAPPING;
9934     case actCollecting:         return ACTION_COLLECTING;
9935     case actPassing:            return ACTION_PASSING;
9936     case actPushing:            return ACTION_PUSHING;
9937     case actDropping:           return ACTION_DROPPING;
9938
9939     default:                    return ACTION_DEFAULT;
9940   }
9941 }
9942
9943 int map_element_RND_to_MM(int element_rnd)
9944 {
9945   return (element_rnd >= EL_MM_START_1 &&
9946           element_rnd <= EL_MM_END_1 ?
9947           EL_MM_START_1_NATIVE + element_rnd - EL_MM_START_1 :
9948
9949           element_rnd >= EL_MM_START_2 &&
9950           element_rnd <= EL_MM_END_2 ?
9951           EL_MM_START_2_NATIVE + element_rnd - EL_MM_START_2 :
9952
9953           element_rnd >= EL_MM_START_3 &&
9954           element_rnd <= EL_MM_END_3 ?
9955           EL_MM_START_3_NATIVE + element_rnd - EL_MM_START_3 :
9956
9957           element_rnd >= EL_CHAR_START &&
9958           element_rnd <= EL_CHAR_END ?
9959           EL_MM_CHAR_START_NATIVE + element_rnd - EL_CHAR_START :
9960
9961           element_rnd >= EL_MM_RUNTIME_START &&
9962           element_rnd <= EL_MM_RUNTIME_END ?
9963           EL_MM_RUNTIME_START_NATIVE + element_rnd - EL_MM_RUNTIME_START :
9964
9965           EL_MM_EMPTY_NATIVE);
9966 }
9967
9968 int map_element_MM_to_RND(int element_mm)
9969 {
9970   return (element_mm == EL_MM_EMPTY_NATIVE ||
9971           element_mm == EL_DF_EMPTY_NATIVE ?
9972           EL_EMPTY :
9973
9974           element_mm >= EL_MM_START_1_NATIVE &&
9975           element_mm <= EL_MM_END_1_NATIVE ?
9976           EL_MM_START_1 + element_mm - EL_MM_START_1_NATIVE :
9977
9978           element_mm >= EL_MM_START_2_NATIVE &&
9979           element_mm <= EL_MM_END_2_NATIVE ?
9980           EL_MM_START_2 + element_mm - EL_MM_START_2_NATIVE :
9981
9982           element_mm >= EL_MM_START_3_NATIVE &&
9983           element_mm <= EL_MM_END_3_NATIVE ?
9984           EL_MM_START_3 + element_mm - EL_MM_START_3_NATIVE :
9985
9986           element_mm >= EL_MM_CHAR_START_NATIVE &&
9987           element_mm <= EL_MM_CHAR_END_NATIVE ?
9988           EL_CHAR_START + element_mm - EL_MM_CHAR_START_NATIVE :
9989
9990           element_mm >= EL_MM_RUNTIME_START_NATIVE &&
9991           element_mm <= EL_MM_RUNTIME_END_NATIVE ?
9992           EL_MM_RUNTIME_START + element_mm - EL_MM_RUNTIME_START_NATIVE :
9993
9994           EL_EMPTY);
9995 }
9996
9997 int map_action_MM_to_RND(int action_mm)
9998 {
9999   // all MM actions are defined to exactly match their RND counterparts
10000   return action_mm;
10001 }
10002
10003 int map_sound_MM_to_RND(int sound_mm)
10004 {
10005   switch (sound_mm)
10006   {
10007     case SND_MM_GAME_LEVELTIME_CHARGING:
10008       return SND_GAME_LEVELTIME_CHARGING;
10009
10010     case SND_MM_GAME_HEALTH_CHARGING:
10011       return SND_GAME_HEALTH_CHARGING;
10012
10013     default:
10014       return SND_UNDEFINED;
10015   }
10016 }
10017
10018 int map_mm_wall_element(int element)
10019 {
10020   return (element >= EL_MM_STEEL_WALL_START &&
10021           element <= EL_MM_STEEL_WALL_END ?
10022           EL_MM_STEEL_WALL :
10023
10024           element >= EL_MM_WOODEN_WALL_START &&
10025           element <= EL_MM_WOODEN_WALL_END ?
10026           EL_MM_WOODEN_WALL :
10027
10028           element >= EL_MM_ICE_WALL_START &&
10029           element <= EL_MM_ICE_WALL_END ?
10030           EL_MM_ICE_WALL :
10031
10032           element >= EL_MM_AMOEBA_WALL_START &&
10033           element <= EL_MM_AMOEBA_WALL_END ?
10034           EL_MM_AMOEBA_WALL :
10035
10036           element >= EL_DF_STEEL_WALL_START &&
10037           element <= EL_DF_STEEL_WALL_END ?
10038           EL_DF_STEEL_WALL :
10039
10040           element >= EL_DF_WOODEN_WALL_START &&
10041           element <= EL_DF_WOODEN_WALL_END ?
10042           EL_DF_WOODEN_WALL :
10043
10044           element);
10045 }
10046
10047 int map_mm_wall_element_editor(int element)
10048 {
10049   switch (element)
10050   {
10051     case EL_MM_STEEL_WALL:      return EL_MM_STEEL_WALL_START;
10052     case EL_MM_WOODEN_WALL:     return EL_MM_WOODEN_WALL_START;
10053     case EL_MM_ICE_WALL:        return EL_MM_ICE_WALL_START;
10054     case EL_MM_AMOEBA_WALL:     return EL_MM_AMOEBA_WALL_START;
10055     case EL_DF_STEEL_WALL:      return EL_DF_STEEL_WALL_START;
10056     case EL_DF_WOODEN_WALL:     return EL_DF_WOODEN_WALL_START;
10057
10058     default:                    return element;
10059   }
10060 }
10061
10062 int get_next_element(int element)
10063 {
10064   switch (element)
10065   {
10066     case EL_QUICKSAND_FILLING:          return EL_QUICKSAND_FULL;
10067     case EL_QUICKSAND_EMPTYING:         return EL_QUICKSAND_EMPTY;
10068     case EL_QUICKSAND_FAST_FILLING:     return EL_QUICKSAND_FAST_FULL;
10069     case EL_QUICKSAND_FAST_EMPTYING:    return EL_QUICKSAND_FAST_EMPTY;
10070     case EL_MAGIC_WALL_FILLING:         return EL_MAGIC_WALL_FULL;
10071     case EL_MAGIC_WALL_EMPTYING:        return EL_MAGIC_WALL_ACTIVE;
10072     case EL_BD_MAGIC_WALL_FILLING:      return EL_BD_MAGIC_WALL_FULL;
10073     case EL_BD_MAGIC_WALL_EMPTYING:     return EL_BD_MAGIC_WALL_ACTIVE;
10074     case EL_DC_MAGIC_WALL_FILLING:      return EL_DC_MAGIC_WALL_FULL;
10075     case EL_DC_MAGIC_WALL_EMPTYING:     return EL_DC_MAGIC_WALL_ACTIVE;
10076     case EL_AMOEBA_DROPPING:            return EL_AMOEBA_WET;
10077
10078     default:                            return element;
10079   }
10080 }
10081
10082 int el2img_mm(int element_mm)
10083 {
10084   return el2img(map_element_MM_to_RND(element_mm));
10085 }
10086
10087 int el_act2img_mm(int element_mm, int action)
10088 {
10089   return el_act2img(map_element_MM_to_RND(element_mm), action);
10090 }
10091
10092 int el_act_dir2img(int element, int action, int direction)
10093 {
10094   element = GFX_ELEMENT(element);
10095   direction = MV_DIR_TO_BIT(direction); // default: MV_NONE => MV_DOWN
10096
10097   // direction_graphic[][] == graphic[] for undefined direction graphics
10098   return element_info[element].direction_graphic[action][direction];
10099 }
10100
10101 static int el_act_dir2crm(int element, int action, int direction)
10102 {
10103   element = GFX_ELEMENT(element);
10104   direction = MV_DIR_TO_BIT(direction); // default: MV_NONE => MV_DOWN
10105
10106   // direction_graphic[][] == graphic[] for undefined direction graphics
10107   return element_info[element].direction_crumbled[action][direction];
10108 }
10109
10110 int el_act2img(int element, int action)
10111 {
10112   element = GFX_ELEMENT(element);
10113
10114   return element_info[element].graphic[action];
10115 }
10116
10117 int el_act2crm(int element, int action)
10118 {
10119   element = GFX_ELEMENT(element);
10120
10121   return element_info[element].crumbled[action];
10122 }
10123
10124 int el_dir2img(int element, int direction)
10125 {
10126   element = GFX_ELEMENT(element);
10127
10128   return el_act_dir2img(element, ACTION_DEFAULT, direction);
10129 }
10130
10131 int el2baseimg(int element)
10132 {
10133   return element_info[element].graphic[ACTION_DEFAULT];
10134 }
10135
10136 int el2img(int element)
10137 {
10138   element = GFX_ELEMENT(element);
10139
10140   return element_info[element].graphic[ACTION_DEFAULT];
10141 }
10142
10143 int el2edimg(int element)
10144 {
10145   element = GFX_ELEMENT(element);
10146
10147   return element_info[element].special_graphic[GFX_SPECIAL_ARG_EDITOR];
10148 }
10149
10150 int el2preimg(int element)
10151 {
10152   element = GFX_ELEMENT(element);
10153
10154   return element_info[element].special_graphic[GFX_SPECIAL_ARG_PREVIEW];
10155 }
10156
10157 int el2panelimg(int element)
10158 {
10159   element = GFX_ELEMENT(element);
10160
10161   return element_info[element].special_graphic[GFX_SPECIAL_ARG_PANEL];
10162 }
10163
10164 int font2baseimg(int font_nr)
10165 {
10166   return font_info[font_nr].special_graphic[GFX_SPECIAL_ARG_DEFAULT];
10167 }
10168
10169 int getBeltNrFromBeltElement(int element)
10170 {
10171   return (element < EL_CONVEYOR_BELT_2_LEFT ? 0 :
10172           element < EL_CONVEYOR_BELT_3_LEFT ? 1 :
10173           element < EL_CONVEYOR_BELT_4_LEFT ? 2 : 3);
10174 }
10175
10176 int getBeltNrFromBeltActiveElement(int element)
10177 {
10178   return (element < EL_CONVEYOR_BELT_2_LEFT_ACTIVE ? 0 :
10179           element < EL_CONVEYOR_BELT_3_LEFT_ACTIVE ? 1 :
10180           element < EL_CONVEYOR_BELT_4_LEFT_ACTIVE ? 2 : 3);
10181 }
10182
10183 int getBeltNrFromBeltSwitchElement(int element)
10184 {
10185   return (element < EL_CONVEYOR_BELT_2_SWITCH_LEFT ? 0 :
10186           element < EL_CONVEYOR_BELT_3_SWITCH_LEFT ? 1 :
10187           element < EL_CONVEYOR_BELT_4_SWITCH_LEFT ? 2 : 3);
10188 }
10189
10190 int getBeltDirNrFromBeltElement(int element)
10191 {
10192   static int belt_base_element[4] =
10193   {
10194     EL_CONVEYOR_BELT_1_LEFT,
10195     EL_CONVEYOR_BELT_2_LEFT,
10196     EL_CONVEYOR_BELT_3_LEFT,
10197     EL_CONVEYOR_BELT_4_LEFT
10198   };
10199
10200   int belt_nr = getBeltNrFromBeltElement(element);
10201   int belt_dir_nr = element - belt_base_element[belt_nr];
10202
10203   return (belt_dir_nr % 3);
10204 }
10205
10206 int getBeltDirNrFromBeltSwitchElement(int element)
10207 {
10208   static int belt_base_element[4] =
10209   {
10210     EL_CONVEYOR_BELT_1_SWITCH_LEFT,
10211     EL_CONVEYOR_BELT_2_SWITCH_LEFT,
10212     EL_CONVEYOR_BELT_3_SWITCH_LEFT,
10213     EL_CONVEYOR_BELT_4_SWITCH_LEFT
10214   };
10215
10216   int belt_nr = getBeltNrFromBeltSwitchElement(element);
10217   int belt_dir_nr = element - belt_base_element[belt_nr];
10218
10219   return (belt_dir_nr % 3);
10220 }
10221
10222 int getBeltDirFromBeltElement(int element)
10223 {
10224   static int belt_move_dir[3] =
10225   {
10226     MV_LEFT,
10227     MV_NONE,
10228     MV_RIGHT
10229   };
10230
10231   int belt_dir_nr = getBeltDirNrFromBeltElement(element);
10232
10233   return belt_move_dir[belt_dir_nr];
10234 }
10235
10236 int getBeltDirFromBeltSwitchElement(int element)
10237 {
10238   static int belt_move_dir[3] =
10239   {
10240     MV_LEFT,
10241     MV_NONE,
10242     MV_RIGHT
10243   };
10244
10245   int belt_dir_nr = getBeltDirNrFromBeltSwitchElement(element);
10246
10247   return belt_move_dir[belt_dir_nr];
10248 }
10249
10250 int getBeltElementFromBeltNrAndBeltDirNr(int belt_nr, int belt_dir_nr)
10251 {
10252   static int belt_base_element[4] =
10253   {
10254     EL_CONVEYOR_BELT_1_LEFT,
10255     EL_CONVEYOR_BELT_2_LEFT,
10256     EL_CONVEYOR_BELT_3_LEFT,
10257     EL_CONVEYOR_BELT_4_LEFT
10258   };
10259
10260   return belt_base_element[belt_nr] + belt_dir_nr;
10261 }
10262
10263 int getBeltElementFromBeltNrAndBeltDir(int belt_nr, int belt_dir)
10264 {
10265   int belt_dir_nr = (belt_dir == MV_LEFT ? 0 : belt_dir == MV_RIGHT ? 2 : 1);
10266
10267   return getBeltElementFromBeltNrAndBeltDirNr(belt_nr, belt_dir_nr);
10268 }
10269
10270 int getBeltSwitchElementFromBeltNrAndBeltDirNr(int belt_nr, int belt_dir_nr)
10271 {
10272   static int belt_base_element[4] =
10273   {
10274     EL_CONVEYOR_BELT_1_SWITCH_LEFT,
10275     EL_CONVEYOR_BELT_2_SWITCH_LEFT,
10276     EL_CONVEYOR_BELT_3_SWITCH_LEFT,
10277     EL_CONVEYOR_BELT_4_SWITCH_LEFT
10278   };
10279
10280   return belt_base_element[belt_nr] + belt_dir_nr;
10281 }
10282
10283 int getBeltSwitchElementFromBeltNrAndBeltDir(int belt_nr, int belt_dir)
10284 {
10285   int belt_dir_nr = (belt_dir == MV_LEFT ? 0 : belt_dir == MV_RIGHT ? 2 : 1);
10286
10287   return getBeltSwitchElementFromBeltNrAndBeltDirNr(belt_nr, belt_dir_nr);
10288 }
10289
10290 boolean swapTiles_EM(boolean is_pre_emc_cave)
10291 {
10292   return is_pre_emc_cave && leveldir_current->use_emc_tiles;
10293 }
10294
10295 boolean getTeamMode_EM(void)
10296 {
10297   return game.team_mode || network_playing;
10298 }
10299
10300 boolean isActivePlayer_EM(int player_nr)
10301 {
10302   return stored_player[player_nr].active;
10303 }
10304
10305 unsigned int InitRND(int seed)
10306 {
10307   if (level.game_engine_type == GAME_ENGINE_TYPE_BD)
10308     return InitEngineRandom_BD(seed);
10309   else if (level.game_engine_type == GAME_ENGINE_TYPE_EM)
10310     return InitEngineRandom_EM(seed);
10311   else if (level.game_engine_type == GAME_ENGINE_TYPE_SP)
10312     return InitEngineRandom_SP(seed);
10313   else if (level.game_engine_type == GAME_ENGINE_TYPE_MM)
10314     return InitEngineRandom_MM(seed);
10315   else
10316     return InitEngineRandom_RND(seed);
10317 }
10318
10319 static struct Mapping_BD_to_RND_object bd_object_mapping[O_MAX_ALL];
10320 static struct Mapping_EM_to_RND_object em_object_mapping[GAME_TILE_MAX];
10321 static struct Mapping_EM_to_RND_player em_player_mapping[MAX_PLAYERS][PLY_MAX];
10322
10323 static int get_effective_element_EM(int tile, int frame_em)
10324 {
10325   int element             = em_object_mapping[tile].element_rnd;
10326   int action              = em_object_mapping[tile].action;
10327   boolean is_backside     = em_object_mapping[tile].is_backside;
10328   boolean action_removing = (action == ACTION_DIGGING ||
10329                              action == ACTION_SNAPPING ||
10330                              action == ACTION_COLLECTING);
10331
10332   if (frame_em < 7)
10333   {
10334     switch (tile)
10335     {
10336       case Xsplash_e:
10337       case Xsplash_w:
10338         return (frame_em > 5 ? EL_EMPTY : element);
10339
10340       default:
10341         return element;
10342     }
10343   }
10344   else  // frame_em == 7
10345   {
10346     switch (tile)
10347     {
10348       case Xsplash_e:
10349       case Xsplash_w:
10350         return EL_EMPTY;
10351
10352       case Ynut_stone:
10353         return EL_EMERALD;
10354
10355       case Ydiamond_stone:
10356         return EL_ROCK;
10357
10358       case Xdrip_stretch:
10359       case Xdrip_stretchB:
10360       case Ydrip_1_s:
10361       case Ydrip_1_sB:
10362       case Yball_1:
10363       case Xball_2:
10364       case Yball_2:
10365       case Yball_blank:
10366       case Ykey_1_blank:
10367       case Ykey_2_blank:
10368       case Ykey_3_blank:
10369       case Ykey_4_blank:
10370       case Ykey_5_blank:
10371       case Ykey_6_blank:
10372       case Ykey_7_blank:
10373       case Ykey_8_blank:
10374       case Ylenses_blank:
10375       case Ymagnify_blank:
10376       case Ygrass_blank:
10377       case Ydirt_blank:
10378       case Xsand_stonein_1:
10379       case Xsand_stonein_2:
10380       case Xsand_stonein_3:
10381       case Xsand_stonein_4:
10382         return element;
10383
10384       default:
10385         return (is_backside || action_removing ? EL_EMPTY : element);
10386     }
10387   }
10388 }
10389
10390 static boolean check_linear_animation_EM(int tile)
10391 {
10392   switch (tile)
10393   {
10394     case Xsand_stonesand_1:
10395     case Xsand_stonesand_quickout_1:
10396     case Xsand_sandstone_1:
10397     case Xsand_stonein_1:
10398     case Xsand_stoneout_1:
10399     case Xboom_1:
10400     case Xdynamite_1:
10401     case Ybug_w_n:
10402     case Ybug_n_e:
10403     case Ybug_e_s:
10404     case Ybug_s_w:
10405     case Ybug_e_n:
10406     case Ybug_s_e:
10407     case Ybug_w_s:
10408     case Ybug_n_w:
10409     case Ytank_w_n:
10410     case Ytank_n_e:
10411     case Ytank_e_s:
10412     case Ytank_s_w:
10413     case Ytank_e_n:
10414     case Ytank_s_e:
10415     case Ytank_w_s:
10416     case Ytank_n_w:
10417     case Xsplash_e:
10418     case Xsplash_w:
10419     case Ynut_stone:
10420       return TRUE;
10421   }
10422
10423   return FALSE;
10424 }
10425
10426 static void set_crumbled_graphics_EM(struct GraphicInfo_EM *g_em,
10427                                      boolean has_crumbled_graphics,
10428                                      int crumbled, int sync_frame)
10429 {
10430   // if element can be crumbled, but certain action graphics are just empty
10431   // space (like instantly snapping sand to empty space in 1 frame), do not
10432   // treat these empty space graphics as crumbled graphics in EMC engine
10433   if (crumbled == IMG_EMPTY_SPACE)
10434     has_crumbled_graphics = FALSE;
10435
10436   if (has_crumbled_graphics)
10437   {
10438     struct GraphicInfo *g_crumbled = &graphic_info[crumbled];
10439     int frame_crumbled = getAnimationFrame(g_crumbled->anim_frames,
10440                                            g_crumbled->anim_delay,
10441                                            g_crumbled->anim_mode,
10442                                            g_crumbled->anim_start_frame,
10443                                            sync_frame);
10444
10445     getGraphicSource(crumbled, frame_crumbled, &g_em->crumbled_bitmap,
10446                      &g_em->crumbled_src_x, &g_em->crumbled_src_y);
10447
10448     g_em->crumbled_border_size = graphic_info[crumbled].border_size;
10449     g_em->crumbled_tile_size = graphic_info[crumbled].tile_size;
10450
10451     g_em->has_crumbled_graphics = TRUE;
10452   }
10453   else
10454   {
10455     g_em->crumbled_bitmap = NULL;
10456     g_em->crumbled_src_x = 0;
10457     g_em->crumbled_src_y = 0;
10458     g_em->crumbled_border_size = 0;
10459     g_em->crumbled_tile_size = 0;
10460
10461     g_em->has_crumbled_graphics = FALSE;
10462   }
10463 }
10464
10465 #if 0
10466 void ResetGfxAnimation_EM(int x, int y, int tile)
10467 {
10468   GfxFrame[x][y] = 0;
10469 }
10470 #endif
10471
10472 void SetGfxAnimation_EM(struct GraphicInfo_EM *g_em,
10473                         int tile, int frame_em, int x, int y)
10474 {
10475   int action = em_object_mapping[tile].action;
10476   int direction = em_object_mapping[tile].direction;
10477   int effective_element = get_effective_element_EM(tile, frame_em);
10478   int graphic = (direction == MV_NONE ?
10479                  el_act2img(effective_element, action) :
10480                  el_act_dir2img(effective_element, action, direction));
10481   struct GraphicInfo *g = &graphic_info[graphic];
10482   int sync_frame;
10483   boolean action_removing = (action == ACTION_DIGGING ||
10484                              action == ACTION_SNAPPING ||
10485                              action == ACTION_COLLECTING);
10486   boolean action_moving   = (action == ACTION_FALLING ||
10487                              action == ACTION_MOVING ||
10488                              action == ACTION_PUSHING ||
10489                              action == ACTION_EATING ||
10490                              action == ACTION_FILLING ||
10491                              action == ACTION_EMPTYING);
10492   boolean action_falling  = (action == ACTION_FALLING ||
10493                              action == ACTION_FILLING ||
10494                              action == ACTION_EMPTYING);
10495
10496   // special case: graphic uses "2nd movement tile" and has defined
10497   // 7 frames for movement animation (or less) => use default graphic
10498   // for last (8th) frame which ends the movement animation
10499   if (g->double_movement && g->anim_frames < 8 && frame_em == 7)
10500   {
10501     action = ACTION_DEFAULT;    // (keep action_* unchanged for now)
10502     graphic = (direction == MV_NONE ?
10503                el_act2img(effective_element, action) :
10504                el_act_dir2img(effective_element, action, direction));
10505
10506     g = &graphic_info[graphic];
10507   }
10508
10509   if ((action_removing || check_linear_animation_EM(tile)) && frame_em == 0)
10510   {
10511     GfxFrame[x][y] = 0;
10512   }
10513   else if (action_moving)
10514   {
10515     boolean is_backside = em_object_mapping[tile].is_backside;
10516
10517     if (is_backside)
10518     {
10519       int direction = em_object_mapping[tile].direction;
10520       int move_dir = (action_falling ? MV_DOWN : direction);
10521
10522       GfxFrame[x][y]++;
10523
10524 #if 1
10525       // !!! TEST !!! NEW !!! DOES NOT WORK RIGHT YET !!!
10526       if (g->double_movement && frame_em == 0)
10527         GfxFrame[x][y] = 0;
10528 #endif
10529
10530       if (move_dir == MV_LEFT)
10531         GfxFrame[x - 1][y] = GfxFrame[x][y];
10532       else if (move_dir == MV_RIGHT)
10533         GfxFrame[x + 1][y] = GfxFrame[x][y];
10534       else if (move_dir == MV_UP)
10535         GfxFrame[x][y - 1] = GfxFrame[x][y];
10536       else if (move_dir == MV_DOWN)
10537         GfxFrame[x][y + 1] = GfxFrame[x][y];
10538     }
10539   }
10540   else
10541   {
10542     GfxFrame[x][y]++;
10543
10544     // special case: animation for Xsand_stonesand_quickout_1/2 twice as fast
10545     if (tile == Xsand_stonesand_quickout_1 ||
10546         tile == Xsand_stonesand_quickout_2)
10547       GfxFrame[x][y]++;
10548   }
10549
10550   if (graphic_info[graphic].anim_global_sync)
10551     sync_frame = FrameCounter;
10552   else if (graphic_info[graphic].anim_global_anim_sync)
10553     sync_frame = getGlobalAnimSyncFrame();
10554   else if (IN_FIELD(x, y, MAX_LEV_FIELDX, MAX_LEV_FIELDY))
10555     sync_frame = GfxFrame[x][y];
10556   else
10557     sync_frame = 0;     // playfield border (pseudo steel)
10558
10559   SetRandomAnimationValue(x, y);
10560
10561   int frame = getAnimationFrame(g->anim_frames,
10562                                 g->anim_delay,
10563                                 g->anim_mode,
10564                                 g->anim_start_frame,
10565                                 sync_frame);
10566
10567   g_em->unique_identifier =
10568     (graphic << 16) | ((frame % 8) << 12) | (g_em->width << 6) | g_em->height;
10569 }
10570
10571 void getGraphicSourceObjectExt_EM(struct GraphicInfo_EM *g_em,
10572                                   int tile, int frame_em, int x, int y)
10573 {
10574   int action = em_object_mapping[tile].action;
10575   int direction = em_object_mapping[tile].direction;
10576   boolean is_backside = em_object_mapping[tile].is_backside;
10577   int effective_element = get_effective_element_EM(tile, frame_em);
10578   int effective_action = action;
10579   int graphic = (direction == MV_NONE ?
10580                  el_act2img(effective_element, effective_action) :
10581                  el_act_dir2img(effective_element, effective_action,
10582                                 direction));
10583   int crumbled = (direction == MV_NONE ?
10584                   el_act2crm(effective_element, effective_action) :
10585                   el_act_dir2crm(effective_element, effective_action,
10586                                  direction));
10587   int base_graphic = el_act2img(effective_element, ACTION_DEFAULT);
10588   int base_crumbled = el_act2crm(effective_element, ACTION_DEFAULT);
10589   boolean has_crumbled_graphics = (base_crumbled != base_graphic);
10590   struct GraphicInfo *g = &graphic_info[graphic];
10591   int sync_frame;
10592
10593   // special case: graphic uses "2nd movement tile" and has defined
10594   // 7 frames for movement animation (or less) => use default graphic
10595   // for last (8th) frame which ends the movement animation
10596   if (g->double_movement && g->anim_frames < 8 && frame_em == 7)
10597   {
10598     effective_action = ACTION_DEFAULT;
10599     graphic = (direction == MV_NONE ?
10600                el_act2img(effective_element, effective_action) :
10601                el_act_dir2img(effective_element, effective_action,
10602                               direction));
10603     crumbled = (direction == MV_NONE ?
10604                 el_act2crm(effective_element, effective_action) :
10605                 el_act_dir2crm(effective_element, effective_action,
10606                                direction));
10607
10608     g = &graphic_info[graphic];
10609   }
10610
10611   if (graphic_info[graphic].anim_global_sync)
10612     sync_frame = FrameCounter;
10613   else if (graphic_info[graphic].anim_global_anim_sync)
10614     sync_frame = getGlobalAnimSyncFrame();
10615   else if (IN_FIELD(x, y, MAX_LEV_FIELDX, MAX_LEV_FIELDY))
10616     sync_frame = GfxFrame[x][y];
10617   else
10618     sync_frame = 0;     // playfield border (pseudo steel)
10619
10620   SetRandomAnimationValue(x, y);
10621
10622   int frame = getAnimationFrame(g->anim_frames,
10623                                 g->anim_delay,
10624                                 g->anim_mode,
10625                                 g->anim_start_frame,
10626                                 sync_frame);
10627
10628   getGraphicSourceExt(graphic, frame, &g_em->bitmap, &g_em->src_x, &g_em->src_y,
10629                       g->double_movement && is_backside);
10630
10631   // (updating the "crumbled" graphic definitions is probably not really needed,
10632   // as animations for crumbled graphics can't be longer than one EMC cycle)
10633   set_crumbled_graphics_EM(g_em, has_crumbled_graphics, crumbled,
10634                            sync_frame);
10635 }
10636
10637 void getGraphicSourcePlayerExt_EM(struct GraphicInfo_EM *g_em,
10638                                   int player_nr, int anim, int frame_em)
10639 {
10640   int element   = em_player_mapping[player_nr][anim].element_rnd;
10641   int action    = em_player_mapping[player_nr][anim].action;
10642   int direction = em_player_mapping[player_nr][anim].direction;
10643   int graphic = (direction == MV_NONE ?
10644                  el_act2img(element, action) :
10645                  el_act_dir2img(element, action, direction));
10646   struct GraphicInfo *g = &graphic_info[graphic];
10647   int sync_frame;
10648
10649   InitPlayerGfxAnimation(&stored_player[player_nr], action, direction);
10650
10651   stored_player[player_nr].StepFrame = frame_em;
10652
10653   sync_frame = stored_player[player_nr].Frame;
10654
10655   int frame = getAnimationFrame(g->anim_frames,
10656                                 g->anim_delay,
10657                                 g->anim_mode,
10658                                 g->anim_start_frame,
10659                                 sync_frame);
10660
10661   getGraphicSourceExt(graphic, frame, &g_em->bitmap,
10662                       &g_em->src_x, &g_em->src_y, FALSE);
10663 }
10664
10665 #define BD_GFX_RANGE(a, n, i)           ((i) >= (a) && (i) < (a) + (n))
10666 #define BD_GFX_FRAME(b, i)              (((i) - (b)) * 8)
10667
10668 void InitGraphicInfo_BD(void)
10669 {
10670   int i, j;
10671
10672   // always start with reliable default values
10673   for (i = 0; i < O_MAX_ALL; i++)
10674   {
10675     bd_object_mapping[i].element_rnd = EL_UNKNOWN;
10676     bd_object_mapping[i].action = ACTION_DEFAULT;
10677     bd_object_mapping[i].direction = MV_NONE;
10678   }
10679
10680   for (i = 0; bd_object_mapping_list[i].element_bd != -1; i++)
10681   {
10682     int e = bd_object_mapping_list[i].element_bd;
10683
10684     bd_object_mapping[e].element_rnd = bd_object_mapping_list[i].element_rnd;
10685
10686     if (bd_object_mapping_list[i].action != -1)
10687       bd_object_mapping[e].action = bd_object_mapping_list[i].action;
10688
10689     if (bd_object_mapping_list[i].direction != -1)
10690       bd_object_mapping[e].direction =
10691         MV_DIR_FROM_BIT(bd_object_mapping_list[i].direction);
10692   }
10693
10694   for (i = 0; i < O_MAX_ALL; i++)
10695   {
10696     int element = bd_object_mapping[i].element_rnd;
10697     int action = bd_object_mapping[i].action;
10698     int direction = bd_object_mapping[i].direction;
10699
10700     for (j = 0; j < 8; j++)
10701     {
10702       int effective_element = element;
10703       int effective_action = action;
10704       int graphic = (el_act_dir2img(effective_element, effective_action,
10705                                     direction));
10706       struct GraphicInfo *g = &graphic_info[graphic];
10707       struct GraphicInfo_BD *g_bd = &graphic_info_bd_object[i][j];
10708       Bitmap *src_bitmap;
10709       int src_x, src_y;
10710       int sync_frame = (BD_GFX_RANGE(O_PRE_PL_1, 3, i)        ? BD_GFX_FRAME(O_PRE_PL_1, i) :
10711                         BD_GFX_RANGE(O_PRE_DIA_1, 5, i)       ? BD_GFX_FRAME(O_PRE_DIA_1, i) :
10712                         BD_GFX_RANGE(O_PRE_STONE_1, 4, i)     ? BD_GFX_FRAME(O_PRE_STONE_1, i) :
10713                         BD_GFX_RANGE(O_PRE_STEEL_1, 4, i)     ? BD_GFX_FRAME(O_PRE_STEEL_1, i) :
10714                         BD_GFX_RANGE(O_BOMB_TICK_1, 7, i)     ? BD_GFX_FRAME(O_BOMB_TICK_1, i) :
10715                         BD_GFX_RANGE(O_BOMB_EXPL_1, 4, i)     ? BD_GFX_FRAME(O_BOMB_EXPL_1, i) :
10716                         BD_GFX_RANGE(O_NUT_EXPL_1, 4, i)      ? BD_GFX_FRAME(O_NUT_EXPL_1, i) :
10717                         BD_GFX_RANGE(O_GHOST_EXPL_1, 4, i)    ? BD_GFX_FRAME(O_GHOST_EXPL_1, i) :
10718                         BD_GFX_RANGE(O_EXPLODE_1, 5, i)       ? BD_GFX_FRAME(O_EXPLODE_1, i) :
10719                         BD_GFX_RANGE(O_PRE_CLOCK_1, 4, i)     ? BD_GFX_FRAME(O_PRE_CLOCK_1, i) :
10720                         BD_GFX_RANGE(O_NITRO_EXPL_1, 4, i)    ? BD_GFX_FRAME(O_NITRO_EXPL_1, i) :
10721                         BD_GFX_RANGE(O_AMOEBA_2_EXPL_1, 4, i) ? BD_GFX_FRAME(O_AMOEBA_2_EXPL_1, i):
10722                         i == O_INBOX_OPEN || i == O_OUTBOX_OPEN ? j :
10723                         j * 2);
10724       int frame = getAnimationFrame(g->anim_frames,
10725                                     g->anim_delay,
10726                                     g->anim_mode,
10727                                     g->anim_start_frame,
10728                                     sync_frame);
10729
10730       getGraphicSourceExt(graphic, frame, &src_bitmap, &src_x, &src_y, FALSE);
10731
10732       g_bd->bitmap = src_bitmap;
10733       g_bd->src_x  = src_x;
10734       g_bd->src_y  = src_y;
10735       g_bd->width  = TILEX;
10736       g_bd->height = TILEY;
10737
10738       g_bd->graphic = graphic;
10739       g_bd->frame = frame;
10740     }
10741   }
10742
10743   // game graphics template for level-specific colors for native BD levels
10744   int graphic = IMG_BD_GAME_GRAPHICS_COLOR_TEMPLATE;
10745   struct GraphicInfo_BD *g_bd = &graphic_info_bd_color_template;
10746   Bitmap *src_bitmap;
10747   int src_x, src_y;
10748
10749   getGraphicSourceExt(graphic, 0, &src_bitmap, &src_x, &src_y, FALSE);
10750
10751   g_bd->bitmap = src_bitmap;
10752   g_bd->src_x  = src_x;
10753   g_bd->src_y  = src_y;
10754   g_bd->width  = TILEX;
10755   g_bd->height = TILEY;
10756
10757   g_bd->graphic = graphic;
10758   g_bd->frame = 0;
10759 }
10760
10761 void InitGraphicInfo_EM(void)
10762 {
10763   int i, j, p;
10764
10765   // always start with reliable default values
10766   for (i = 0; i < GAME_TILE_MAX; i++)
10767   {
10768     em_object_mapping[i].element_rnd = EL_UNKNOWN;
10769     em_object_mapping[i].is_backside = FALSE;
10770     em_object_mapping[i].action = ACTION_DEFAULT;
10771     em_object_mapping[i].direction = MV_NONE;
10772   }
10773
10774   // always start with reliable default values
10775   for (p = 0; p < MAX_PLAYERS; p++)
10776   {
10777     for (i = 0; i < PLY_MAX; i++)
10778     {
10779       em_player_mapping[p][i].element_rnd = EL_UNKNOWN;
10780       em_player_mapping[p][i].action = ACTION_DEFAULT;
10781       em_player_mapping[p][i].direction = MV_NONE;
10782     }
10783   }
10784
10785   for (i = 0; em_object_mapping_list[i].element_em != -1; i++)
10786   {
10787     int e = em_object_mapping_list[i].element_em;
10788
10789     em_object_mapping[e].element_rnd = em_object_mapping_list[i].element_rnd;
10790     em_object_mapping[e].is_backside = em_object_mapping_list[i].is_backside;
10791
10792     if (em_object_mapping_list[i].action != -1)
10793       em_object_mapping[e].action = em_object_mapping_list[i].action;
10794
10795     if (em_object_mapping_list[i].direction != -1)
10796       em_object_mapping[e].direction =
10797         MV_DIR_FROM_BIT(em_object_mapping_list[i].direction);
10798   }
10799
10800   for (i = 0; em_player_mapping_list[i].action_em != -1; i++)
10801   {
10802     int a = em_player_mapping_list[i].action_em;
10803     int p = em_player_mapping_list[i].player_nr;
10804
10805     em_player_mapping[p][a].element_rnd = em_player_mapping_list[i].element_rnd;
10806
10807     if (em_player_mapping_list[i].action != -1)
10808       em_player_mapping[p][a].action = em_player_mapping_list[i].action;
10809
10810     if (em_player_mapping_list[i].direction != -1)
10811       em_player_mapping[p][a].direction =
10812         MV_DIR_FROM_BIT(em_player_mapping_list[i].direction);
10813   }
10814
10815   for (i = 0; i < GAME_TILE_MAX; i++)
10816   {
10817     int element = em_object_mapping[i].element_rnd;
10818     int action = em_object_mapping[i].action;
10819     int direction = em_object_mapping[i].direction;
10820     boolean is_backside = em_object_mapping[i].is_backside;
10821     boolean action_exploding = ((action == ACTION_EXPLODING ||
10822                                  action == ACTION_SMASHED_BY_ROCK ||
10823                                  action == ACTION_SMASHED_BY_SPRING) &&
10824                                 element != EL_DIAMOND);
10825     boolean action_active = (action == ACTION_ACTIVE);
10826     boolean action_other = (action == ACTION_OTHER);
10827
10828     for (j = 0; j < 8; j++)
10829     {
10830       int effective_element = get_effective_element_EM(i, j);
10831       int effective_action = (j < 7 ? action :
10832                               i == Xdrip_stretch ? action :
10833                               i == Xdrip_stretchB ? action :
10834                               i == Ydrip_1_s ? action :
10835                               i == Ydrip_1_sB ? action :
10836                               i == Yball_1 ? action :
10837                               i == Xball_2 ? action :
10838                               i == Yball_2 ? action :
10839                               i == Yball_blank ? action :
10840                               i == Ykey_1_blank ? action :
10841                               i == Ykey_2_blank ? action :
10842                               i == Ykey_3_blank ? action :
10843                               i == Ykey_4_blank ? action :
10844                               i == Ykey_5_blank ? action :
10845                               i == Ykey_6_blank ? action :
10846                               i == Ykey_7_blank ? action :
10847                               i == Ykey_8_blank ? action :
10848                               i == Ylenses_blank ? action :
10849                               i == Ymagnify_blank ? action :
10850                               i == Ygrass_blank ? action :
10851                               i == Ydirt_blank ? action :
10852                               i == Xsand_stonein_1 ? action :
10853                               i == Xsand_stonein_2 ? action :
10854                               i == Xsand_stonein_3 ? action :
10855                               i == Xsand_stonein_4 ? action :
10856                               i == Xsand_stoneout_1 ? action :
10857                               i == Xsand_stoneout_2 ? action :
10858                               i == Xboom_android ? ACTION_EXPLODING :
10859                               action_exploding ? ACTION_EXPLODING :
10860                               action_active ? action :
10861                               action_other ? action :
10862                               ACTION_DEFAULT);
10863       int graphic = (el_act_dir2img(effective_element, effective_action,
10864                                     direction));
10865       int crumbled = (el_act_dir2crm(effective_element, effective_action,
10866                                      direction));
10867       int base_graphic = el_act2img(effective_element, ACTION_DEFAULT);
10868       int base_crumbled = el_act2crm(effective_element, ACTION_DEFAULT);
10869       boolean has_action_graphics = (graphic != base_graphic);
10870       boolean has_crumbled_graphics = (base_crumbled != base_graphic);
10871       struct GraphicInfo *g = &graphic_info[graphic];
10872       struct GraphicInfo_EM *g_em = &graphic_info_em_object[i][j];
10873       Bitmap *src_bitmap;
10874       int src_x, src_y;
10875       // ensure to get symmetric 3-frame, 2-delay animations as used in EM
10876       boolean special_animation = (action != ACTION_DEFAULT &&
10877                                    g->anim_frames == 3 &&
10878                                    g->anim_delay == 2 &&
10879                                    g->anim_mode & ANIM_LINEAR);
10880       int sync_frame = (i == Xdrip_stretch ? 7 :
10881                         i == Xdrip_stretchB ? 7 :
10882                         i == Ydrip_2_s ? j + 8 :
10883                         i == Ydrip_2_sB ? j + 8 :
10884                         i == Xacid_1 ? 0 :
10885                         i == Xacid_2 ? 10 :
10886                         i == Xacid_3 ? 20 :
10887                         i == Xacid_4 ? 30 :
10888                         i == Xacid_5 ? 40 :
10889                         i == Xacid_6 ? 50 :
10890                         i == Xacid_7 ? 60 :
10891                         i == Xacid_8 ? 70 :
10892                         i == Xfake_acid_1 ? 0 :
10893                         i == Xfake_acid_2 ? 10 :
10894                         i == Xfake_acid_3 ? 20 :
10895                         i == Xfake_acid_4 ? 30 :
10896                         i == Xfake_acid_5 ? 40 :
10897                         i == Xfake_acid_6 ? 50 :
10898                         i == Xfake_acid_7 ? 60 :
10899                         i == Xfake_acid_8 ? 70 :
10900                         i == Xfake_acid_1_player ? 0 :
10901                         i == Xfake_acid_2_player ? 10 :
10902                         i == Xfake_acid_3_player ? 20 :
10903                         i == Xfake_acid_4_player ? 30 :
10904                         i == Xfake_acid_5_player ? 40 :
10905                         i == Xfake_acid_6_player ? 50 :
10906                         i == Xfake_acid_7_player ? 60 :
10907                         i == Xfake_acid_8_player ? 70 :
10908                         i == Xball_2 ? 7 :
10909                         i == Yball_2 ? j + 8 :
10910                         i == Yball_blank ? j + 1 :
10911                         i == Ykey_1_blank ? j + 1 :
10912                         i == Ykey_2_blank ? j + 1 :
10913                         i == Ykey_3_blank ? j + 1 :
10914                         i == Ykey_4_blank ? j + 1 :
10915                         i == Ykey_5_blank ? j + 1 :
10916                         i == Ykey_6_blank ? j + 1 :
10917                         i == Ykey_7_blank ? j + 1 :
10918                         i == Ykey_8_blank ? j + 1 :
10919                         i == Ylenses_blank ? j + 1 :
10920                         i == Ymagnify_blank ? j + 1 :
10921                         i == Ygrass_blank ? j + 1 :
10922                         i == Ydirt_blank ? j + 1 :
10923                         i == Xamoeba_1 ? 0 :
10924                         i == Xamoeba_2 ? 1 :
10925                         i == Xamoeba_3 ? 2 :
10926                         i == Xamoeba_4 ? 3 :
10927                         i == Xamoeba_5 ? 0 :
10928                         i == Xamoeba_6 ? 1 :
10929                         i == Xamoeba_7 ? 2 :
10930                         i == Xamoeba_8 ? 3 :
10931                         i == Xexit_2 ? j + 8 :
10932                         i == Xexit_3 ? j + 16 :
10933                         i == Xdynamite_1 ? 0 :
10934                         i == Xdynamite_2 ? 8 :
10935                         i == Xdynamite_3 ? 16 :
10936                         i == Xdynamite_4 ? 24 :
10937                         i == Xsand_stonein_1 ? j + 1 :
10938                         i == Xsand_stonein_2 ? j + 9 :
10939                         i == Xsand_stonein_3 ? j + 17 :
10940                         i == Xsand_stonein_4 ? j + 25 :
10941                         i == Xsand_stoneout_1 && j == 0 ? 0 :
10942                         i == Xsand_stoneout_1 && j == 1 ? 0 :
10943                         i == Xsand_stoneout_1 && j == 2 ? 1 :
10944                         i == Xsand_stoneout_1 && j == 3 ? 2 :
10945                         i == Xsand_stoneout_1 && j == 4 ? 2 :
10946                         i == Xsand_stoneout_1 && j == 5 ? 3 :
10947                         i == Xsand_stoneout_1 && j == 6 ? 4 :
10948                         i == Xsand_stoneout_1 && j == 7 ? 4 :
10949                         i == Xsand_stoneout_2 && j == 0 ? 5 :
10950                         i == Xsand_stoneout_2 && j == 1 ? 6 :
10951                         i == Xsand_stoneout_2 && j == 2 ? 7 :
10952                         i == Xsand_stoneout_2 && j == 3 ? 8 :
10953                         i == Xsand_stoneout_2 && j == 4 ? 9 :
10954                         i == Xsand_stoneout_2 && j == 5 ? 11 :
10955                         i == Xsand_stoneout_2 && j == 6 ? 13 :
10956                         i == Xsand_stoneout_2 && j == 7 ? 15 :
10957                         i == Xboom_bug && j == 1 ? 2 :
10958                         i == Xboom_bug && j == 2 ? 2 :
10959                         i == Xboom_bug && j == 3 ? 4 :
10960                         i == Xboom_bug && j == 4 ? 4 :
10961                         i == Xboom_bug && j == 5 ? 2 :
10962                         i == Xboom_bug && j == 6 ? 2 :
10963                         i == Xboom_bug && j == 7 ? 0 :
10964                         i == Xboom_tank && j == 1 ? 2 :
10965                         i == Xboom_tank && j == 2 ? 2 :
10966                         i == Xboom_tank && j == 3 ? 4 :
10967                         i == Xboom_tank && j == 4 ? 4 :
10968                         i == Xboom_tank && j == 5 ? 2 :
10969                         i == Xboom_tank && j == 6 ? 2 :
10970                         i == Xboom_tank && j == 7 ? 0 :
10971                         i == Xboom_android && j == 7 ? 6 :
10972                         i == Xboom_1 && j == 1 ? 2 :
10973                         i == Xboom_1 && j == 2 ? 2 :
10974                         i == Xboom_1 && j == 3 ? 4 :
10975                         i == Xboom_1 && j == 4 ? 4 :
10976                         i == Xboom_1 && j == 5 ? 6 :
10977                         i == Xboom_1 && j == 6 ? 6 :
10978                         i == Xboom_1 && j == 7 ? 8 :
10979                         i == Xboom_2 && j == 0 ? 8 :
10980                         i == Xboom_2 && j == 1 ? 8 :
10981                         i == Xboom_2 && j == 2 ? 10 :
10982                         i == Xboom_2 && j == 3 ? 10 :
10983                         i == Xboom_2 && j == 4 ? 10 :
10984                         i == Xboom_2 && j == 5 ? 12 :
10985                         i == Xboom_2 && j == 6 ? 12 :
10986                         i == Xboom_2 && j == 7 ? 12 :
10987                         special_animation && j == 4 ? 3 :
10988                         effective_action != action ? 0 :
10989                         j);
10990       int frame = getAnimationFrame(g->anim_frames,
10991                                     g->anim_delay,
10992                                     g->anim_mode,
10993                                     g->anim_start_frame,
10994                                     sync_frame);
10995
10996       getGraphicSourceExt(graphic, frame, &src_bitmap, &src_x, &src_y,
10997                           g->double_movement && is_backside);
10998
10999       g_em->bitmap = src_bitmap;
11000       g_em->src_x = src_x;
11001       g_em->src_y = src_y;
11002       g_em->src_offset_x = 0;
11003       g_em->src_offset_y = 0;
11004       g_em->dst_offset_x = 0;
11005       g_em->dst_offset_y = 0;
11006       g_em->width  = TILEX;
11007       g_em->height = TILEY;
11008
11009       g_em->preserve_background = FALSE;
11010
11011       set_crumbled_graphics_EM(g_em, has_crumbled_graphics, crumbled,
11012                                sync_frame);
11013
11014       if ((!g->double_movement && (effective_action == ACTION_FALLING ||
11015                                    effective_action == ACTION_MOVING  ||
11016                                    effective_action == ACTION_PUSHING ||
11017                                    effective_action == ACTION_EATING)) ||
11018           (!has_action_graphics && (effective_action == ACTION_FILLING ||
11019                                     effective_action == ACTION_EMPTYING)))
11020       {
11021         int move_dir =
11022           (effective_action == ACTION_FALLING ||
11023            effective_action == ACTION_FILLING ||
11024            effective_action == ACTION_EMPTYING ? MV_DOWN : direction);
11025         int dx = (move_dir == MV_LEFT ? -1 : move_dir == MV_RIGHT ? 1 : 0);
11026         int dy = (move_dir == MV_UP   ? -1 : move_dir == MV_DOWN  ? 1 : 0);
11027         int num_steps = (i == Ydrip_1_s  ? 16 :
11028                          i == Ydrip_1_sB ? 16 :
11029                          i == Ydrip_2_s  ? 16 :
11030                          i == Ydrip_2_sB ? 16 :
11031                          i == Xsand_stonein_1 ? 32 :
11032                          i == Xsand_stonein_2 ? 32 :
11033                          i == Xsand_stonein_3 ? 32 :
11034                          i == Xsand_stonein_4 ? 32 :
11035                          i == Xsand_stoneout_1 ? 16 :
11036                          i == Xsand_stoneout_2 ? 16 : 8);
11037         int cx = ABS(dx) * (TILEX / num_steps);
11038         int cy = ABS(dy) * (TILEY / num_steps);
11039         int step_frame = (i == Ydrip_2_s        ? j + 8 :
11040                           i == Ydrip_2_sB       ? j + 8 :
11041                           i == Xsand_stonein_2  ? j + 8 :
11042                           i == Xsand_stonein_3  ? j + 16 :
11043                           i == Xsand_stonein_4  ? j + 24 :
11044                           i == Xsand_stoneout_2 ? j + 8 : j) + 1;
11045         int step = (is_backside ? step_frame : num_steps - step_frame);
11046
11047         if (is_backside)        // tile where movement starts
11048         {
11049           if (dx < 0 || dy < 0)
11050           {
11051             g_em->src_offset_x = cx * step;
11052             g_em->src_offset_y = cy * step;
11053           }
11054           else
11055           {
11056             g_em->dst_offset_x = cx * step;
11057             g_em->dst_offset_y = cy * step;
11058           }
11059         }
11060         else                    // tile where movement ends
11061         {
11062           if (dx < 0 || dy < 0)
11063           {
11064             g_em->dst_offset_x = cx * step;
11065             g_em->dst_offset_y = cy * step;
11066           }
11067           else
11068           {
11069             g_em->src_offset_x = cx * step;
11070             g_em->src_offset_y = cy * step;
11071           }
11072         }
11073
11074         g_em->width  = TILEX - cx * step;
11075         g_em->height = TILEY - cy * step;
11076       }
11077
11078       // create unique graphic identifier to decide if tile must be redrawn
11079       /* bit 31 - 16 (16 bit): EM style graphic
11080          bit 15 - 12 ( 4 bit): EM style frame
11081          bit 11 -  6 ( 6 bit): graphic width
11082          bit  5 -  0 ( 6 bit): graphic height */
11083       g_em->unique_identifier =
11084         (graphic << 16) | (frame << 12) | (g_em->width << 6) | g_em->height;
11085     }
11086   }
11087
11088   for (i = 0; i < GAME_TILE_MAX; i++)
11089   {
11090     for (j = 0; j < 8; j++)
11091     {
11092       int element = em_object_mapping[i].element_rnd;
11093       int action = em_object_mapping[i].action;
11094       int direction = em_object_mapping[i].direction;
11095       boolean is_backside = em_object_mapping[i].is_backside;
11096       int graphic_action  = el_act_dir2img(element, action, direction);
11097       int graphic_default = el_act_dir2img(element, ACTION_DEFAULT, direction);
11098
11099       if ((action == ACTION_SMASHED_BY_ROCK ||
11100            action == ACTION_SMASHED_BY_SPRING ||
11101            action == ACTION_EATING) &&
11102           graphic_action == graphic_default)
11103       {
11104         int e = (action == ACTION_SMASHED_BY_ROCK   ? Ystone_s  :
11105                  action == ACTION_SMASHED_BY_SPRING ? Yspring_s :
11106                  direction == MV_LEFT  ? (is_backside? Yspring_wB: Yspring_w) :
11107                  direction == MV_RIGHT ? (is_backside? Yspring_eB: Yspring_e) :
11108                  Xspring);
11109
11110         // no separate animation for "smashed by rock" -- use rock instead
11111         struct GraphicInfo_EM *g_em = &graphic_info_em_object[i][j];
11112         struct GraphicInfo_EM *g_xx = &graphic_info_em_object[e][j];
11113
11114         g_em->bitmap            = g_xx->bitmap;
11115         g_em->src_x             = g_xx->src_x;
11116         g_em->src_y             = g_xx->src_y;
11117         g_em->src_offset_x      = g_xx->src_offset_x;
11118         g_em->src_offset_y      = g_xx->src_offset_y;
11119         g_em->dst_offset_x      = g_xx->dst_offset_x;
11120         g_em->dst_offset_y      = g_xx->dst_offset_y;
11121         g_em->width             = g_xx->width;
11122         g_em->height            = g_xx->height;
11123         g_em->unique_identifier = g_xx->unique_identifier;
11124
11125         if (!is_backside)
11126           g_em->preserve_background = TRUE;
11127       }
11128     }
11129   }
11130
11131   for (p = 0; p < MAX_PLAYERS; p++)
11132   {
11133     for (i = 0; i < PLY_MAX; i++)
11134     {
11135       int element = em_player_mapping[p][i].element_rnd;
11136       int action = em_player_mapping[p][i].action;
11137       int direction = em_player_mapping[p][i].direction;
11138
11139       for (j = 0; j < 8; j++)
11140       {
11141         int effective_element = element;
11142         int effective_action = action;
11143         int graphic = (direction == MV_NONE ?
11144                        el_act2img(effective_element, effective_action) :
11145                        el_act_dir2img(effective_element, effective_action,
11146                                       direction));
11147         struct GraphicInfo *g = &graphic_info[graphic];
11148         struct GraphicInfo_EM *g_em = &graphic_info_em_player[p][i][j];
11149         Bitmap *src_bitmap;
11150         int src_x, src_y;
11151         int sync_frame = j;
11152         int frame = getAnimationFrame(g->anim_frames,
11153                                       g->anim_delay,
11154                                       g->anim_mode,
11155                                       g->anim_start_frame,
11156                                       sync_frame);
11157
11158         getGraphicSourceExt(graphic, frame, &src_bitmap, &src_x, &src_y, FALSE);
11159
11160         g_em->bitmap = src_bitmap;
11161         g_em->src_x = src_x;
11162         g_em->src_y = src_y;
11163         g_em->src_offset_x = 0;
11164         g_em->src_offset_y = 0;
11165         g_em->dst_offset_x = 0;
11166         g_em->dst_offset_y = 0;
11167         g_em->width  = TILEX;
11168         g_em->height = TILEY;
11169       }
11170     }
11171   }
11172 }
11173
11174 static void CheckSaveEngineSnapshot_EM(int frame,
11175                                        boolean any_player_moving,
11176                                        boolean any_player_snapping,
11177                                        boolean any_player_dropping)
11178 {
11179   if (frame == 7 && !any_player_dropping)
11180   {
11181     if (!local_player->was_waiting)
11182     {
11183       if (!CheckSaveEngineSnapshotToList())
11184         return;
11185
11186       local_player->was_waiting = TRUE;
11187     }
11188   }
11189   else if (any_player_moving || any_player_snapping || any_player_dropping)
11190   {
11191     local_player->was_waiting = FALSE;
11192   }
11193 }
11194
11195 static void CheckSaveEngineSnapshot_SP(boolean murphy_is_waiting,
11196                                        boolean murphy_is_dropping)
11197 {
11198   if (murphy_is_waiting)
11199   {
11200     if (!local_player->was_waiting)
11201     {
11202       if (!CheckSaveEngineSnapshotToList())
11203         return;
11204
11205       local_player->was_waiting = TRUE;
11206     }
11207   }
11208   else
11209   {
11210     local_player->was_waiting = FALSE;
11211   }
11212 }
11213
11214 static void CheckSaveEngineSnapshot_MM(boolean element_clicked,
11215                                        boolean button_released)
11216 {
11217   if (button_released)
11218   {
11219     if (game.snapshot.mode == SNAPSHOT_MODE_EVERY_MOVE)
11220       CheckSaveEngineSnapshotToList();
11221   }
11222   else if (element_clicked)
11223   {
11224     if (game.snapshot.mode != SNAPSHOT_MODE_EVERY_MOVE)
11225       CheckSaveEngineSnapshotToList();
11226
11227     game.snapshot.changed_action = TRUE;
11228   }
11229 }
11230
11231 boolean CheckSingleStepMode_EM(int frame,
11232                                boolean any_player_moving,
11233                                boolean any_player_snapping,
11234                                boolean any_player_dropping)
11235 {
11236   if (tape.single_step && tape.recording && !tape.pausing)
11237     if (frame == 7 && !any_player_dropping && FrameCounter > 6)
11238       TapeTogglePause(TAPE_TOGGLE_AUTOMATIC);
11239
11240   CheckSaveEngineSnapshot_EM(frame, any_player_moving,
11241                              any_player_snapping, any_player_dropping);
11242
11243   return tape.pausing;
11244 }
11245
11246 void CheckSingleStepMode_SP(boolean murphy_is_waiting,
11247                             boolean murphy_is_dropping)
11248 {
11249   boolean murphy_starts_dropping = FALSE;
11250   int i;
11251
11252   for (i = 0; i < MAX_PLAYERS; i++)
11253     if (stored_player[i].force_dropping)
11254       murphy_starts_dropping = TRUE;
11255
11256   if (tape.single_step && tape.recording && !tape.pausing)
11257     if (murphy_is_waiting && !murphy_starts_dropping)
11258       TapeTogglePause(TAPE_TOGGLE_AUTOMATIC);
11259
11260   CheckSaveEngineSnapshot_SP(murphy_is_waiting, murphy_is_dropping);
11261 }
11262
11263 void CheckSingleStepMode_MM(boolean element_clicked,
11264                             boolean button_released)
11265 {
11266   if (tape.single_step && tape.recording && !tape.pausing)
11267     if (button_released)
11268       TapeTogglePause(TAPE_TOGGLE_AUTOMATIC);
11269
11270   CheckSaveEngineSnapshot_MM(element_clicked, button_released);
11271 }
11272
11273 void getGraphicSource_SP(struct GraphicInfo_SP *g_sp,
11274                          int graphic, int sync_frame)
11275 {
11276   int frame = getGraphicAnimationFrame(graphic, sync_frame);
11277
11278   getGraphicSource(graphic, frame, &g_sp->bitmap, &g_sp->src_x, &g_sp->src_y);
11279 }
11280
11281 boolean isNextAnimationFrame_SP(int graphic, int sync_frame)
11282 {
11283   return (IS_NEXT_FRAME(sync_frame, graphic));
11284 }
11285
11286 int getGraphicInfo_Delay(int graphic)
11287 {
11288   return graphic_info[graphic].anim_delay;
11289 }
11290
11291 boolean getGraphicInfo_NewFrame(int x, int y, int graphic)
11292 {
11293   if (!IS_NEW_FRAME(GfxFrame[x][y], graphic))
11294     return FALSE;
11295
11296   if (ANIM_MODE(graphic) & (ANIM_TILED | ANIM_RANDOM_STATIC))
11297     return FALSE;
11298
11299   return TRUE;
11300 }
11301
11302 void PlayMenuSoundExt(int sound)
11303 {
11304   if (sound == SND_UNDEFINED)
11305     return;
11306
11307   if ((!setup.sound_simple && !IS_LOOP_SOUND(sound)) ||
11308       (!setup.sound_loops && IS_LOOP_SOUND(sound)))
11309     return;
11310
11311   if (IS_LOOP_SOUND(sound))
11312     PlaySoundLoop(sound);
11313   else
11314     PlaySound(sound);
11315 }
11316
11317 void PlayMenuSound(void)
11318 {
11319   PlayMenuSoundExt(menu.sound[game_status]);
11320 }
11321
11322 void PlayMenuSoundStereo(int sound, int stereo_position)
11323 {
11324   if (sound == SND_UNDEFINED)
11325     return;
11326
11327   if ((!setup.sound_simple && !IS_LOOP_SOUND(sound)) ||
11328       (!setup.sound_loops && IS_LOOP_SOUND(sound)))
11329     return;
11330
11331   if (IS_LOOP_SOUND(sound))
11332     PlaySoundExt(sound, SOUND_MAX_VOLUME, stereo_position, SND_CTRL_PLAY_LOOP);
11333   else
11334     PlaySoundStereo(sound, stereo_position);
11335 }
11336
11337 void PlayMenuSoundIfLoopExt(int sound)
11338 {
11339   if (sound == SND_UNDEFINED)
11340     return;
11341
11342   if ((!setup.sound_simple && !IS_LOOP_SOUND(sound)) ||
11343       (!setup.sound_loops && IS_LOOP_SOUND(sound)))
11344     return;
11345
11346   if (IS_LOOP_SOUND(sound))
11347     PlaySoundLoop(sound);
11348 }
11349
11350 void PlayMenuSoundIfLoop(void)
11351 {
11352   PlayMenuSoundIfLoopExt(menu.sound[game_status]);
11353 }
11354
11355 void PlayMenuMusicExt(int music)
11356 {
11357   if (music == MUS_UNDEFINED)
11358     return;
11359
11360   if (!setup.sound_music)
11361     return;
11362
11363   if (IS_LOOP_MUSIC(music))
11364     PlayMusicLoop(music);
11365   else
11366     PlayMusic(music);
11367 }
11368
11369 void PlayMenuMusic(void)
11370 {
11371   char *curr_music = getCurrentlyPlayingMusicFilename();
11372   char *next_music = getMusicInfoEntryFilename(menu.music[game_status]);
11373
11374   if (!strEqual(curr_music, next_music))
11375     PlayMenuMusicExt(menu.music[game_status]);
11376 }
11377
11378 void PlayMenuSoundsAndMusic(void)
11379 {
11380   PlayMenuSound();
11381   PlayMenuMusic();
11382 }
11383
11384 static void FadeMenuSounds(void)
11385 {
11386   FadeSounds();
11387 }
11388
11389 static void FadeMenuMusic(void)
11390 {
11391   char *curr_music = getCurrentlyPlayingMusicFilename();
11392   char *next_music = getMusicInfoEntryFilename(menu.music[game_status]);
11393
11394   if (!strEqual(curr_music, next_music))
11395     FadeMusic();
11396 }
11397
11398 void FadeMenuSoundsAndMusic(void)
11399 {
11400   FadeMenuSounds();
11401   FadeMenuMusic();
11402 }
11403
11404 void PlaySoundActivating(void)
11405 {
11406 #if 0
11407   PlaySound(SND_MENU_ITEM_ACTIVATING);
11408 #endif
11409 }
11410
11411 void PlaySoundSelecting(void)
11412 {
11413 #if 0
11414   PlaySound(SND_MENU_ITEM_SELECTING);
11415 #endif
11416 }
11417
11418 void ToggleFullscreenIfNeeded(void)
11419 {
11420   // if setup and video fullscreen state are already matching, nothing do do
11421   if (setup.fullscreen == video.fullscreen_enabled ||
11422       !video.fullscreen_available)
11423     return;
11424
11425   SDLSetWindowFullscreen(setup.fullscreen);
11426
11427   // set setup value according to successfully changed fullscreen mode
11428   setup.fullscreen = video.fullscreen_enabled;
11429 }
11430
11431 void ChangeWindowScalingIfNeeded(void)
11432 {
11433   // if setup and video window scaling are already matching, nothing do do
11434   if (setup.window_scaling_percent == video.window_scaling_percent ||
11435       video.fullscreen_enabled)
11436     return;
11437
11438   SDLSetWindowScaling(setup.window_scaling_percent);
11439
11440   // set setup value according to successfully changed window scaling
11441   setup.window_scaling_percent = video.window_scaling_percent;
11442 }
11443
11444 void ChangeVsyncModeIfNeeded(void)
11445 {
11446   int setup_vsync_mode = VSYNC_MODE_STR_TO_INT(setup.vsync_mode);
11447   int video_vsync_mode = video.vsync_mode;
11448
11449   // if setup and video vsync mode are already matching, nothing do do
11450   if (setup_vsync_mode == video_vsync_mode)
11451     return;
11452
11453   // if renderer is using OpenGL, vsync mode can directly be changed
11454   SDLSetScreenVsyncMode(setup.vsync_mode);
11455
11456   // if vsync mode unchanged, try re-creating renderer to set vsync mode
11457   if (video.vsync_mode == video_vsync_mode)
11458   {
11459     Bitmap *tmp_backbuffer = CreateBitmap(WIN_XSIZE, WIN_YSIZE, DEFAULT_DEPTH);
11460
11461     // save backbuffer content which gets lost when re-creating screen
11462     BlitBitmap(backbuffer, tmp_backbuffer, 0, 0, WIN_XSIZE, WIN_YSIZE, 0, 0);
11463
11464     // force re-creating screen and renderer to set new vsync mode
11465     video.fullscreen_enabled = !setup.fullscreen;
11466
11467     // when creating new renderer, destroy textures linked to old renderer
11468     FreeAllImageTextures();     // needs old renderer to free the textures
11469
11470     // re-create screen and renderer (including change of vsync mode)
11471     ChangeVideoModeIfNeeded(setup.fullscreen);
11472
11473     // set setup value according to successfully changed fullscreen mode
11474     setup.fullscreen = video.fullscreen_enabled;
11475
11476     // restore backbuffer content from temporary backbuffer backup bitmap
11477     BlitBitmap(tmp_backbuffer, backbuffer, 0, 0, WIN_XSIZE, WIN_YSIZE, 0, 0);
11478     FreeBitmap(tmp_backbuffer);
11479
11480     // update visible window/screen
11481     BlitBitmap(backbuffer, window, 0, 0, WIN_XSIZE, WIN_YSIZE, 0, 0);
11482
11483     // when changing vsync mode, re-create textures for new renderer
11484     InitImageTextures();
11485   }
11486
11487   // set setup value according to successfully changed vsync mode
11488   setup.vsync_mode = VSYNC_MODE_INT_TO_STR(video.vsync_mode);
11489 }
11490
11491 static void JoinRectangles(int *x, int *y, int *width, int *height,
11492                            int x2, int y2, int width2, int height2)
11493 {
11494   // do not join with "off-screen" rectangle
11495   if (x2 == -1 || y2 == -1)
11496     return;
11497
11498   *x = MIN(*x, x2);
11499   *y = MIN(*y, y2);
11500   *width = MAX(*width, width2);
11501   *height = MAX(*height, height2);
11502 }
11503
11504 void SetAnimStatus(int anim_status_new)
11505 {
11506   if (anim_status_new == GAME_MODE_MAIN)
11507     anim_status_new = GAME_MODE_PSEUDO_MAINONLY;
11508   else if (anim_status_new == GAME_MODE_NAMES)
11509     anim_status_new = GAME_MODE_PSEUDO_NAMESONLY;
11510   else if (anim_status_new == GAME_MODE_SCORES)
11511     anim_status_new = GAME_MODE_PSEUDO_SCORESOLD;
11512
11513   global.anim_status_next = anim_status_new;
11514
11515   // directly set screen modes that are entered without fading
11516   if ((global.anim_status      == GAME_MODE_PSEUDO_MAINONLY &&
11517        global.anim_status_next == GAME_MODE_PSEUDO_TYPENAME) ||
11518       (global.anim_status      == GAME_MODE_PSEUDO_TYPENAME &&
11519        global.anim_status_next == GAME_MODE_PSEUDO_MAINONLY) ||
11520       (global.anim_status      == GAME_MODE_PSEUDO_NAMESONLY &&
11521        global.anim_status_next == GAME_MODE_PSEUDO_TYPENAMES) ||
11522       (global.anim_status      == GAME_MODE_PSEUDO_TYPENAMES &&
11523        global.anim_status_next == GAME_MODE_PSEUDO_NAMESONLY))
11524     global.anim_status = global.anim_status_next;
11525 }
11526
11527 void SetGameStatus(int game_status_new)
11528 {
11529   if (game_status_new != game_status)
11530     game_status_last_screen = game_status;
11531
11532   game_status = game_status_new;
11533
11534   SetAnimStatus(game_status_new);
11535 }
11536
11537 void SetFontStatus(int game_status_new)
11538 {
11539   static int last_game_status = -1;
11540
11541   if (game_status_new != -1)
11542   {
11543     // set game status for font use after storing last game status
11544     last_game_status = game_status;
11545     game_status = game_status_new;
11546   }
11547   else
11548   {
11549     // reset game status after font use from last stored game status
11550     game_status = last_game_status;
11551   }
11552 }
11553
11554 void ResetFontStatus(void)
11555 {
11556   SetFontStatus(-1);
11557 }
11558
11559 void SetLevelSetInfo(char *identifier, int level_nr)
11560 {
11561   setString(&levelset.identifier, identifier);
11562
11563   levelset.level_nr = level_nr;
11564 }
11565
11566 boolean CheckIfAllViewportsHaveChanged(void)
11567 {
11568   // if game status has not changed, viewports have not changed either
11569   if (game_status == game_status_last)
11570     return FALSE;
11571
11572   // check if all viewports have changed with current game status
11573
11574   struct RectWithBorder *vp_playfield = &viewport.playfield[game_status];
11575   struct RectWithBorder *vp_door_1    = &viewport.door_1[game_status];
11576   struct RectWithBorder *vp_door_2    = &viewport.door_2[game_status];
11577   int new_real_sx       = vp_playfield->x;
11578   int new_real_sy       = vp_playfield->y;
11579   int new_full_sxsize   = vp_playfield->width;
11580   int new_full_sysize   = vp_playfield->height;
11581   int new_dx            = vp_door_1->x;
11582   int new_dy            = vp_door_1->y;
11583   int new_dxsize        = vp_door_1->width;
11584   int new_dysize        = vp_door_1->height;
11585   int new_vx            = vp_door_2->x;
11586   int new_vy            = vp_door_2->y;
11587   int new_vxsize        = vp_door_2->width;
11588   int new_vysize        = vp_door_2->height;
11589
11590   boolean playfield_viewport_has_changed =
11591     (new_real_sx != REAL_SX ||
11592      new_real_sy != REAL_SY ||
11593      new_full_sxsize != FULL_SXSIZE ||
11594      new_full_sysize != FULL_SYSIZE);
11595
11596   boolean door_1_viewport_has_changed =
11597     (new_dx != DX ||
11598      new_dy != DY ||
11599      new_dxsize != DXSIZE ||
11600      new_dysize != DYSIZE);
11601
11602   boolean door_2_viewport_has_changed =
11603     (new_vx != VX ||
11604      new_vy != VY ||
11605      new_vxsize != VXSIZE ||
11606      new_vysize != VYSIZE ||
11607      game_status_last == GAME_MODE_EDITOR);
11608
11609   return (playfield_viewport_has_changed &&
11610           door_1_viewport_has_changed &&
11611           door_2_viewport_has_changed);
11612 }
11613
11614 boolean CheckFadeAll(void)
11615 {
11616   return (CheckIfGlobalBorderHasChanged() ||
11617           CheckIfAllViewportsHaveChanged());
11618 }
11619
11620 void ChangeViewportPropertiesIfNeeded(void)
11621 {
11622   boolean use_mini_tilesize = (level.game_engine_type == GAME_ENGINE_TYPE_MM ?
11623                                FALSE : setup.small_game_graphics);
11624   int gfx_game_mode = getGlobalGameStatus(game_status);
11625   int gfx_game_mode2 = (gfx_game_mode == GAME_MODE_EDITOR ? GAME_MODE_DEFAULT :
11626                         gfx_game_mode);
11627   struct RectWithBorder *vp_window    = &viewport.window[gfx_game_mode];
11628   struct RectWithBorder *vp_playfield = &viewport.playfield[gfx_game_mode];
11629   struct RectWithBorder *vp_door_1    = &viewport.door_1[gfx_game_mode];
11630   struct RectWithBorder *vp_door_2    = &viewport.door_2[gfx_game_mode2];
11631   struct RectWithBorder *vp_door_3    = &viewport.door_2[GAME_MODE_EDITOR];
11632   int new_win_xsize     = vp_window->width;
11633   int new_win_ysize     = vp_window->height;
11634   int border_left       = vp_playfield->border_left;
11635   int border_right      = vp_playfield->border_right;
11636   int border_top        = vp_playfield->border_top;
11637   int border_bottom     = vp_playfield->border_bottom;
11638   int new_sx            = vp_playfield->x      + border_left;
11639   int new_sy            = vp_playfield->y      + border_top;
11640   int new_sxsize        = vp_playfield->width  - border_left - border_right;
11641   int new_sysize        = vp_playfield->height - border_top  - border_bottom;
11642   int new_real_sx       = vp_playfield->x;
11643   int new_real_sy       = vp_playfield->y;
11644   int new_full_sxsize   = vp_playfield->width;
11645   int new_full_sysize   = vp_playfield->height;
11646   int new_dx            = vp_door_1->x;
11647   int new_dy            = vp_door_1->y;
11648   int new_dxsize        = vp_door_1->width;
11649   int new_dysize        = vp_door_1->height;
11650   int new_vx            = vp_door_2->x;
11651   int new_vy            = vp_door_2->y;
11652   int new_vxsize        = vp_door_2->width;
11653   int new_vysize        = vp_door_2->height;
11654   int new_ex            = vp_door_3->x;
11655   int new_ey            = vp_door_3->y;
11656   int new_exsize        = vp_door_3->width;
11657   int new_eysize        = vp_door_3->height;
11658   int new_tilesize_var = (use_mini_tilesize ? MINI_TILESIZE : game.tile_size);
11659   int tilesize = (gfx_game_mode == GAME_MODE_PLAYING ? new_tilesize_var :
11660                   gfx_game_mode == GAME_MODE_EDITOR ? MINI_TILESIZE : TILESIZE);
11661   int new_scr_fieldx = new_sxsize / tilesize;
11662   int new_scr_fieldy = new_sysize / tilesize;
11663   int new_scr_fieldx_buffers = new_sxsize / new_tilesize_var;
11664   int new_scr_fieldy_buffers = new_sysize / new_tilesize_var;
11665   boolean init_gfx_buffers = FALSE;
11666   boolean init_video_buffer = FALSE;
11667   boolean init_gadgets_and_anims = FALSE;
11668   boolean init_bd_graphics = FALSE;
11669   boolean init_em_graphics = FALSE;
11670
11671   if (new_win_xsize != WIN_XSIZE ||
11672       new_win_ysize != WIN_YSIZE)
11673   {
11674     WIN_XSIZE = new_win_xsize;
11675     WIN_YSIZE = new_win_ysize;
11676
11677     init_video_buffer = TRUE;
11678     init_gfx_buffers = TRUE;
11679     init_gadgets_and_anims = TRUE;
11680
11681     // Debug("tools:viewport", "video: init_video_buffer, init_gfx_buffers");
11682   }
11683
11684   if (new_scr_fieldx != SCR_FIELDX ||
11685       new_scr_fieldy != SCR_FIELDY)
11686   {
11687     // this always toggles between MAIN and GAME when using small tile size
11688
11689     SCR_FIELDX = new_scr_fieldx;
11690     SCR_FIELDY = new_scr_fieldy;
11691
11692     // Debug("tools:viewport", "new_scr_fieldx != SCR_FIELDX ...");
11693   }
11694
11695   if (new_sx != SX ||
11696       new_sy != SY ||
11697       new_dx != DX ||
11698       new_dy != DY ||
11699       new_vx != VX ||
11700       new_vy != VY ||
11701       new_ex != EX ||
11702       new_ey != EY ||
11703       new_sxsize != SXSIZE ||
11704       new_sysize != SYSIZE ||
11705       new_dxsize != DXSIZE ||
11706       new_dysize != DYSIZE ||
11707       new_vxsize != VXSIZE ||
11708       new_vysize != VYSIZE ||
11709       new_exsize != EXSIZE ||
11710       new_eysize != EYSIZE ||
11711       new_real_sx != REAL_SX ||
11712       new_real_sy != REAL_SY ||
11713       new_full_sxsize != FULL_SXSIZE ||
11714       new_full_sysize != FULL_SYSIZE ||
11715       new_tilesize_var != TILESIZE_VAR
11716       )
11717   {
11718     // ------------------------------------------------------------------------
11719     // determine next fading area for changed viewport definitions
11720     // ------------------------------------------------------------------------
11721
11722     // start with current playfield area (default fading area)
11723     FADE_SX = REAL_SX;
11724     FADE_SY = REAL_SY;
11725     FADE_SXSIZE = FULL_SXSIZE;
11726     FADE_SYSIZE = FULL_SYSIZE;
11727
11728     // add new playfield area if position or size has changed
11729     if (new_real_sx != REAL_SX || new_real_sy != REAL_SY ||
11730         new_full_sxsize != FULL_SXSIZE || new_full_sysize != FULL_SYSIZE)
11731     {
11732       JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
11733                      new_real_sx, new_real_sy, new_full_sxsize,new_full_sysize);
11734     }
11735
11736     // add current and new door 1 area if position or size has changed
11737     if (new_dx != DX || new_dy != DY ||
11738         new_dxsize != DXSIZE || new_dysize != DYSIZE)
11739     {
11740       JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
11741                      DX, DY, DXSIZE, DYSIZE);
11742       JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
11743                      new_dx, new_dy, new_dxsize, new_dysize);
11744     }
11745
11746     // add current and new door 2 area if position or size has changed
11747     if (new_vx != VX || new_vy != VY ||
11748         new_vxsize != VXSIZE || new_vysize != VYSIZE)
11749     {
11750       JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
11751                      VX, VY, VXSIZE, VYSIZE);
11752       JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
11753                      new_vx, new_vy, new_vxsize, new_vysize);
11754     }
11755
11756     // ------------------------------------------------------------------------
11757     // handle changed tile size
11758     // ------------------------------------------------------------------------
11759
11760     if (new_tilesize_var != TILESIZE_VAR)
11761     {
11762       // Debug("tools:viewport", "new_tilesize_var != TILESIZE_VAR");
11763
11764       // changing tile size invalidates scroll values of engine snapshots
11765       FreeEngineSnapshotSingle();
11766
11767       // changing tile size requires update of graphic mapping for BD/EM engine
11768       init_bd_graphics = TRUE;
11769       init_em_graphics = TRUE;
11770     }
11771
11772     SX = new_sx;
11773     SY = new_sy;
11774     DX = new_dx;
11775     DY = new_dy;
11776     VX = new_vx;
11777     VY = new_vy;
11778     EX = new_ex;
11779     EY = new_ey;
11780     SXSIZE = new_sxsize;
11781     SYSIZE = new_sysize;
11782     DXSIZE = new_dxsize;
11783     DYSIZE = new_dysize;
11784     VXSIZE = new_vxsize;
11785     VYSIZE = new_vysize;
11786     EXSIZE = new_exsize;
11787     EYSIZE = new_eysize;
11788     REAL_SX = new_real_sx;
11789     REAL_SY = new_real_sy;
11790     FULL_SXSIZE = new_full_sxsize;
11791     FULL_SYSIZE = new_full_sysize;
11792     TILESIZE_VAR = new_tilesize_var;
11793
11794     init_gfx_buffers = TRUE;
11795     init_gadgets_and_anims = TRUE;
11796
11797     // Debug("tools:viewport", "viewports: init_gfx_buffers");
11798     // Debug("tools:viewport", "viewports: init_gadgets_and_anims");
11799   }
11800
11801   if (init_gfx_buffers)
11802   {
11803     // Debug("tools:viewport", "init_gfx_buffers");
11804
11805     SCR_FIELDX = new_scr_fieldx_buffers;
11806     SCR_FIELDY = new_scr_fieldy_buffers;
11807
11808     InitGfxBuffers();
11809
11810     SCR_FIELDX = new_scr_fieldx;
11811     SCR_FIELDY = new_scr_fieldy;
11812
11813     SetDrawDeactivationMask(REDRAW_NONE);
11814     SetDrawBackgroundMask(REDRAW_FIELD);
11815   }
11816
11817   if (init_video_buffer)
11818   {
11819     // Debug("tools:viewport", "init_video_buffer");
11820
11821     FreeAllImageTextures();     // needs old renderer to free the textures
11822
11823     InitVideoBuffer(WIN_XSIZE, WIN_YSIZE, DEFAULT_DEPTH, setup.fullscreen);
11824     InitImageTextures();
11825   }
11826
11827   if (init_gadgets_and_anims)
11828   {
11829     // Debug("tools:viewport", "init_gadgets_and_anims");
11830
11831     InitGadgets();
11832     InitGlobalAnimations();
11833   }
11834
11835   if (init_bd_graphics)
11836   {
11837     InitGraphicInfo_BD();
11838   }
11839
11840   if (init_em_graphics)
11841   {
11842     InitGraphicInfo_EM();
11843   }
11844 }
11845
11846 void OpenURL(char *url)
11847 {
11848 #if SDL_VERSION_ATLEAST(2,0,14)
11849   SDL_OpenURL(url);
11850 #else
11851   Warn("SDL_OpenURL(\"%s\") not supported by SDL %d.%d.%d!",
11852        url, SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL);
11853   Warn("Please upgrade to at least SDL 2.0.14 for URL support!");
11854 #endif
11855 }
11856
11857 void OpenURLFromHash(SetupFileHash *hash, int hash_key)
11858 {
11859   OpenURL(getHashEntry(hash, int2str(hash_key, 0)));
11860 }
11861
11862 char *getCurrentLevelsetName(void)
11863 {
11864   return leveldir_current->name;
11865 }
11866
11867
11868 // ============================================================================
11869 // tests
11870 // ============================================================================
11871
11872 #if defined(PLATFORM_WINDOWS)
11873 /* FILETIME of Jan 1 1970 00:00:00. */
11874 static const unsigned __int64 epoch = ((unsigned __int64) 116444736000000000ULL);
11875
11876 /*
11877  * timezone information is stored outside the kernel so tzp isn't used anymore.
11878  *
11879  * Note: this function is not for Win32 high precision timing purpose. See
11880  * elapsed_time().
11881  */
11882 static int gettimeofday_windows(struct timeval * tp, struct timezone * tzp)
11883 {
11884   FILETIME    file_time;
11885   SYSTEMTIME  system_time;
11886   ULARGE_INTEGER ularge;
11887
11888   GetSystemTime(&system_time);
11889   SystemTimeToFileTime(&system_time, &file_time);
11890   ularge.LowPart = file_time.dwLowDateTime;
11891   ularge.HighPart = file_time.dwHighDateTime;
11892
11893   tp->tv_sec = (long) ((ularge.QuadPart - epoch) / 10000000L);
11894   tp->tv_usec = (long) (system_time.wMilliseconds * 1000);
11895
11896   return 0;
11897 }
11898 #endif
11899
11900 static char *test_init_uuid_random_function_simple(void)
11901 {
11902   static char seed_text[100];
11903   unsigned int seed = InitSimpleRandom(NEW_RANDOMIZE);
11904
11905   sprintf(seed_text, "%d", seed);
11906
11907   return seed_text;
11908 }
11909
11910 static char *test_init_uuid_random_function_better(void)
11911 {
11912   static char seed_text[100];
11913   struct timeval current_time;
11914
11915   gettimeofday(&current_time, NULL);
11916
11917   prng_seed_bytes(&current_time, sizeof(current_time));
11918
11919   sprintf(seed_text, "%ld.%ld",
11920           (long)current_time.tv_sec,
11921           (long)current_time.tv_usec);
11922
11923   return seed_text;
11924 }
11925
11926 #if defined(PLATFORM_WINDOWS)
11927 static char *test_init_uuid_random_function_better_windows(void)
11928 {
11929   static char seed_text[100];
11930   struct timeval current_time;
11931
11932   gettimeofday_windows(&current_time, NULL);
11933
11934   prng_seed_bytes(&current_time, sizeof(current_time));
11935
11936   sprintf(seed_text, "%ld.%ld",
11937           (long)current_time.tv_sec,
11938           (long)current_time.tv_usec);
11939
11940   return seed_text;
11941 }
11942 #endif
11943
11944 static unsigned int test_uuid_random_function_simple(int max)
11945 {
11946   return GetSimpleRandom(max);
11947 }
11948
11949 static unsigned int test_uuid_random_function_better(int max)
11950 {
11951   return (max > 0 ? prng_get_uint() % max : 0);
11952 }
11953
11954 #if defined(PLATFORM_WINDOWS)
11955 #define NUM_UUID_TESTS                  3
11956 #else
11957 #define NUM_UUID_TESTS                  2
11958 #endif
11959
11960 static void TestGeneratingUUIDs_RunTest(int nr, int always_seed, int num_uuids)
11961 {
11962   HashTable *hash_seeds =
11963     create_hashtable(get_hash_from_string, hash_key_strings_are_equal, free, NULL);
11964   HashTable *hash_uuids =
11965     create_hashtable(get_hash_from_string, hash_key_strings_are_equal, free, NULL);
11966   static char message[100];
11967   int i;
11968
11969   char *random_name = (nr == 0 ? "simple" : "better");
11970   char *random_type = (always_seed ? "always" : "only once");
11971   char *(*init_random_function)(void) =
11972     (nr == 0 ?
11973      test_init_uuid_random_function_simple :
11974      test_init_uuid_random_function_better);
11975   unsigned int (*random_function)(int) =
11976     (nr == 0 ?
11977      test_uuid_random_function_simple :
11978      test_uuid_random_function_better);
11979   int xpos = 40;
11980
11981 #if defined(PLATFORM_WINDOWS)
11982   if (nr == 2)
11983   {
11984     random_name = "windows";
11985     init_random_function = test_init_uuid_random_function_better_windows;
11986   }
11987 #endif
11988
11989   ClearField();
11990
11991   DrawTextF(xpos, 40, FC_GREEN, "Test: Generating UUIDs");
11992   DrawTextF(xpos, 80, FC_YELLOW, "Test %d.%d:", nr + 1, always_seed + 1);
11993
11994   DrawTextF(xpos, 100, FC_YELLOW, "Random Generator Name: %s", random_name);
11995   DrawTextF(xpos, 120, FC_YELLOW, "Seeding Random Generator: %s", random_type);
11996   DrawTextF(xpos, 140, FC_YELLOW, "Number of UUIDs generated: %d", num_uuids);
11997
11998   DrawTextF(xpos, 180, FC_GREEN, "Please wait ...");
11999
12000   BackToFront();
12001
12002   // always initialize random number generator at least once
12003   init_random_function();
12004
12005   unsigned int time_start = SDL_GetTicks();
12006
12007   for (i = 0; i < num_uuids; i++)
12008   {
12009     if (always_seed)
12010     {
12011       char *seed = getStringCopy(init_random_function());
12012
12013       hashtable_remove(hash_seeds, seed);
12014       hashtable_insert(hash_seeds, seed, "1");
12015     }
12016
12017     char *uuid = getStringCopy(getUUIDExt(random_function));
12018
12019     hashtable_remove(hash_uuids, uuid);
12020     hashtable_insert(hash_uuids, uuid, "1");
12021   }
12022
12023   int num_unique_seeds = hashtable_count(hash_seeds);
12024   int num_unique_uuids = hashtable_count(hash_uuids);
12025
12026   unsigned int time_needed = SDL_GetTicks() - time_start;
12027
12028   DrawTextF(xpos, 220, FC_YELLOW, "Time needed: %d ms", time_needed);
12029
12030   DrawTextF(xpos, 240, FC_YELLOW, "Number of unique UUIDs: %d", num_unique_uuids);
12031
12032   if (always_seed)
12033     DrawTextF(xpos, 260, FC_YELLOW, "Number of unique seeds: %d", num_unique_seeds);
12034
12035   if (nr == NUM_UUID_TESTS - 1 && always_seed)
12036     DrawTextF(xpos, 300, FC_GREEN, "All tests done!");
12037   else
12038     DrawTextF(xpos, 300, FC_GREEN, "Confirm dialog for next test ...");
12039
12040   sprintf(message, "Test %d.%d finished!", nr + 1, always_seed + 1);
12041
12042   Request(message, REQ_CONFIRM);
12043
12044   hashtable_destroy(hash_seeds);
12045   hashtable_destroy(hash_uuids);
12046 }
12047
12048 void TestGeneratingUUIDs(void)
12049 {
12050   int num_uuids = 1000000;
12051   int i, j;
12052
12053   for (i = 0; i < NUM_UUID_TESTS; i++)
12054     for (j = 0; j < 2; j++)
12055       TestGeneratingUUIDs_RunTest(i, j, num_uuids);
12056
12057   CloseAllAndExit(0);
12058 }