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     for (k = start; k < num_move_steps; k++)
5519     {
5520       int last_frame = num_move_steps - 1;      // last frame of this "for" loop
5521
5522       door_part_done_all = TRUE;
5523
5524       for (i = 0; i < NUM_DOORS; i++)
5525         door_panel_drawn[i] = FALSE;
5526
5527       for (i = 0; i < MAX_DOOR_PARTS; i++)
5528       {
5529         int nr = door_part_order[i].nr;
5530         struct DoorPartControlInfo *dpc = &door_part_controls[nr];
5531         struct DoorPartPosInfo *pos = dpc->pos;
5532         struct GraphicInfo *g = &graphic_info[dpc->graphic];
5533         int door_token = dpc->door_token;
5534         int door_index = DOOR_INDEX_FROM_TOKEN(door_token);
5535         boolean is_panel = DOOR_PART_IS_PANEL(nr);
5536         boolean is_panel_and_door_has_closed = FALSE;
5537         struct Rect *door_rect = &door_rect_list[door_index];
5538         Bitmap *bitmap_db_door = (door_token == DOOR_1 ? bitmap_db_door_1 :
5539                                   bitmap_db_door_2);
5540         Bitmap *bitmap = (is_panel ? bitmap_db_door : g->bitmap);
5541         int current_door_state = door_state & door_token;
5542         boolean door_opening = ((current_door_state & DOOR_OPEN)  != 0);
5543         boolean door_closing = !door_opening;
5544         boolean part_opening = (is_panel ? door_closing : door_opening);
5545         boolean part_closing = !part_opening;
5546         int start_step = (part_opening ? pos->start_step_opening :
5547                           pos->start_step_closing);
5548         int step_delay = pos->step_delay;
5549         int step_factor = step_delay / max_step_delay;
5550         int k1 = (step_factor ? k / step_factor + 1 : k);
5551         int k2 = (part_opening ? k1 + start_step : num_steps[nr] - k1);
5552         int kk = MAX(0, k2);
5553         int g_src_x = 0;
5554         int g_src_y = 0;
5555         int src_x, src_y, src_xx, src_yy;
5556         int dst_x, dst_y, dst_xx, dst_yy;
5557         int width, height;
5558
5559         if (door_part_skip[nr])
5560           continue;
5561
5562         if (!(door_state & door_token))
5563           continue;
5564
5565         if (!g->bitmap)
5566           continue;
5567
5568         if (!is_panel)
5569         {
5570           int k2_door = (door_opening ? k : num_move_steps_doors_only - k - 1);
5571           int kk_door = MAX(0, k2_door);
5572           int sync_frame = kk_door * door_delay.value;
5573           int frame = getGraphicAnimationFrame(dpc->graphic, sync_frame);
5574
5575           getFixedGraphicSource(dpc->graphic, frame, &bitmap,
5576                                 &g_src_x, &g_src_y);
5577         }
5578
5579         // draw door panel
5580
5581         if (!door_panel_drawn[door_index])
5582         {
5583           ClearRectangle(drawto, door_rect->x, door_rect->y,
5584                          door_rect->width, door_rect->height);
5585
5586           door_panel_drawn[door_index] = TRUE;
5587         }
5588
5589         // draw opening or closing door parts
5590
5591         if (pos->step_xoffset < 0)      // door part on right side
5592         {
5593           src_xx = 0;
5594           dst_xx = pos->x + ABS(kk * pos->step_xoffset);
5595           width = g->width;
5596
5597           if (dst_xx + width > door_rect->width)
5598             width = door_rect->width - dst_xx;
5599         }
5600         else                            // door part on left side
5601         {
5602           src_xx = 0;
5603           dst_xx = pos->x - kk * pos->step_xoffset;
5604
5605           if (dst_xx < 0)
5606           {
5607             src_xx = ABS(dst_xx);
5608             dst_xx = 0;
5609           }
5610
5611           width = g->width - src_xx;
5612
5613           if (width > door_rect->width)
5614             width = door_rect->width;
5615
5616           // Debug("tools:MoveDoor", "k == %d [%d]", k, start_step);
5617         }
5618
5619         if (pos->step_yoffset < 0)      // door part on bottom side
5620         {
5621           src_yy = 0;
5622           dst_yy = pos->y + ABS(kk * pos->step_yoffset);
5623           height = g->height;
5624
5625           if (dst_yy + height > door_rect->height)
5626             height = door_rect->height - dst_yy;
5627         }
5628         else                            // door part on top side
5629         {
5630           src_yy = 0;
5631           dst_yy = pos->y - kk * pos->step_yoffset;
5632
5633           if (dst_yy < 0)
5634           {
5635             src_yy = ABS(dst_yy);
5636             dst_yy = 0;
5637           }
5638
5639           height = g->height - src_yy;
5640         }
5641
5642         src_x = g_src_x + src_xx;
5643         src_y = g_src_y + src_yy;
5644
5645         dst_x = door_rect->x + dst_xx;
5646         dst_y = door_rect->y + dst_yy;
5647
5648         is_panel_and_door_has_closed =
5649           (is_panel &&
5650            door_closing &&
5651            panel_has_doors[door_index] &&
5652            k >= num_move_steps_doors_only - 1);
5653
5654         if (width  >= 0 && width  <= g->width &&
5655             height >= 0 && height <= g->height &&
5656             !is_panel_and_door_has_closed)
5657         {
5658           if (is_panel || !pos->draw_masked)
5659             BlitBitmap(bitmap, drawto, src_x, src_y, width, height,
5660                        dst_x, dst_y);
5661           else
5662             BlitBitmapMasked(bitmap, drawto, src_x, src_y, width, height,
5663                              dst_x, dst_y);
5664         }
5665
5666         redraw_mask |= REDRAW_DOOR_FROM_TOKEN(door_token);
5667
5668         if ((part_opening && (width < 0         || height < 0)) ||
5669             (part_closing && (width >= g->width && height >= g->height)))
5670           door_part_done[nr] = TRUE;
5671
5672         // continue door part animations, but not panel after door has closed
5673         if (!door_part_done[nr] && !is_panel_and_door_has_closed)
5674           door_part_done_all = FALSE;
5675       }
5676
5677       if (!(door_state & DOOR_NO_DELAY))
5678       {
5679         if (game_ended)
5680           HandleGameActions();
5681
5682         BackToFront();
5683
5684         SkipUntilDelayReached(&door_delay, &k, last_frame);
5685
5686         // prevent OS (Windows) from complaining about program not responding
5687         CheckQuitEvent();
5688       }
5689
5690       if (door_part_done_all)
5691         break;
5692     }
5693
5694     if (!(door_state & DOOR_NO_DELAY))
5695     {
5696       // wait for specified door action post delay
5697       if (door_state & DOOR_ACTION_1 && door_state & DOOR_ACTION_2)
5698         door_delay.value = MAX(door_1.post_delay, door_2.post_delay);
5699       else if (door_state & DOOR_ACTION_1)
5700         door_delay.value = door_1.post_delay;
5701       else if (door_state & DOOR_ACTION_2)
5702         door_delay.value = door_2.post_delay;
5703
5704       while (!DelayReached(&door_delay))
5705       {
5706         if (game_ended)
5707           HandleGameActions();
5708
5709         BackToFront();
5710       }
5711     }
5712   }
5713
5714   if (door_state & DOOR_ACTION_1)
5715     door1 = door_state & DOOR_ACTION_1;
5716   if (door_state & DOOR_ACTION_2)
5717     door2 = door_state & DOOR_ACTION_2;
5718
5719   // draw masked border over door area
5720   DrawMaskedBorder(REDRAW_DOOR_1);
5721   DrawMaskedBorder(REDRAW_DOOR_2);
5722
5723   ClearAutoRepeatKeyEvents();
5724
5725   return (door1 | door2);
5726 }
5727
5728 static boolean useSpecialEditorDoor(void)
5729 {
5730   int graphic = IMG_GLOBAL_BORDER_EDITOR;
5731   boolean redefined = getImageListEntryFromImageID(graphic)->redefined;
5732
5733   // do not draw special editor door if editor border defined or redefined
5734   if (graphic_info[graphic].bitmap != NULL || redefined)
5735     return FALSE;
5736
5737   // do not draw special editor door if global border defined to be empty
5738   if (graphic_info[IMG_GLOBAL_BORDER].bitmap == NULL)
5739     return FALSE;
5740
5741   // do not draw special editor door if viewport definitions do not match
5742   if (EX != VX ||
5743       EY >= VY ||
5744       EXSIZE != VXSIZE ||
5745       EY + EYSIZE != VY + VYSIZE)
5746     return FALSE;
5747
5748   return TRUE;
5749 }
5750
5751 void DrawSpecialEditorDoor(void)
5752 {
5753   struct GraphicInfo *gfx1 = &graphic_info[IMG_DOOR_2_TOP_BORDER_CORRECTION];
5754   int top_border_width = gfx1->width;
5755   int top_border_height = gfx1->height;
5756   int outer_border = viewport.door_2[GAME_MODE_EDITOR].border_size;
5757   int ex = EX - outer_border;
5758   int ey = EY - outer_border;
5759   int vy = VY - outer_border;
5760   int exsize = EXSIZE + 2 * outer_border;
5761
5762   if (!useSpecialEditorDoor())
5763     return;
5764
5765   // draw bigger level editor toolbox window
5766   BlitBitmap(gfx1->bitmap, drawto, gfx1->src_x, gfx1->src_y,
5767              top_border_width, top_border_height, ex, ey - top_border_height);
5768   BlitBitmap(graphic_info[IMG_GLOBAL_BORDER].bitmap, drawto, ex, vy,
5769              exsize, EYSIZE - VYSIZE + outer_border, ex, ey);
5770
5771   redraw_mask |= REDRAW_ALL;
5772 }
5773
5774 void UndrawSpecialEditorDoor(void)
5775 {
5776   struct GraphicInfo *gfx1 = &graphic_info[IMG_DOOR_2_TOP_BORDER_CORRECTION];
5777   int top_border_width = gfx1->width;
5778   int top_border_height = gfx1->height;
5779   int outer_border = viewport.door_2[GAME_MODE_EDITOR].border_size;
5780   int ex = EX - outer_border;
5781   int ey = EY - outer_border;
5782   int ey_top = ey - top_border_height;
5783   int exsize = EXSIZE + 2 * outer_border;
5784   int eysize = EYSIZE + 2 * outer_border;
5785
5786   if (!useSpecialEditorDoor())
5787     return;
5788
5789   // draw normal tape recorder window
5790   if (graphic_info[IMG_GLOBAL_BORDER].bitmap)
5791   {
5792     BlitBitmap(graphic_info[IMG_GLOBAL_BORDER].bitmap, drawto,
5793                ex, ey_top, top_border_width, top_border_height,
5794                ex, ey_top);
5795     BlitBitmap(graphic_info[IMG_GLOBAL_BORDER].bitmap, drawto,
5796                ex, ey, exsize, eysize, ex, ey);
5797   }
5798   else
5799   {
5800     // if screen background is set to "[NONE]", clear editor toolbox window
5801     ClearRectangle(drawto, ex, ey_top, top_border_width, top_border_height);
5802     ClearRectangle(drawto, ex, ey, exsize, eysize);
5803   }
5804
5805   redraw_mask |= REDRAW_ALL;
5806 }
5807
5808
5809 // ---------- new tool button stuff -------------------------------------------
5810
5811 static struct
5812 {
5813   int graphic;
5814   struct TextPosInfo *pos;
5815   int gadget_id;
5816   boolean is_touch_button;
5817   char *infotext;
5818 } toolbutton_info[NUM_TOOL_BUTTONS] =
5819 {
5820   {
5821     IMG_GFX_REQUEST_BUTTON_YES,         &request.button.yes,
5822     TOOL_CTRL_ID_YES, FALSE,            "yes"
5823   },
5824   {
5825     IMG_GFX_REQUEST_BUTTON_NO,          &request.button.no,
5826     TOOL_CTRL_ID_NO, FALSE,             "no"
5827   },
5828   {
5829     IMG_GFX_REQUEST_BUTTON_CONFIRM,     &request.button.confirm,
5830     TOOL_CTRL_ID_CONFIRM, FALSE,        "confirm"
5831   },
5832   {
5833     IMG_GFX_REQUEST_BUTTON_PLAYER_1,    &request.button.player_1,
5834     TOOL_CTRL_ID_PLAYER_1, FALSE,       "player 1"
5835   },
5836   {
5837     IMG_GFX_REQUEST_BUTTON_PLAYER_2,    &request.button.player_2,
5838     TOOL_CTRL_ID_PLAYER_2, FALSE,       "player 2"
5839   },
5840   {
5841     IMG_GFX_REQUEST_BUTTON_PLAYER_3,    &request.button.player_3,
5842     TOOL_CTRL_ID_PLAYER_3, FALSE,       "player 3"
5843   },
5844   {
5845     IMG_GFX_REQUEST_BUTTON_PLAYER_4,    &request.button.player_4,
5846     TOOL_CTRL_ID_PLAYER_4, FALSE,       "player 4"
5847   },
5848   {
5849     IMG_GFX_REQUEST_BUTTON_TOUCH_YES,   &request.button.touch_yes,
5850     TOOL_CTRL_ID_TOUCH_YES, TRUE,       "yes"
5851   },
5852   {
5853     IMG_GFX_REQUEST_BUTTON_TOUCH_NO,    &request.button.touch_no,
5854     TOOL_CTRL_ID_TOUCH_NO, TRUE,        "no"
5855   },
5856   {
5857     IMG_GFX_REQUEST_BUTTON_TOUCH_CONFIRM, &request.button.touch_confirm,
5858     TOOL_CTRL_ID_TOUCH_CONFIRM, TRUE,   "confirm"
5859   }
5860 };
5861
5862 void CreateToolButtons(void)
5863 {
5864   int i;
5865
5866   for (i = 0; i < NUM_TOOL_BUTTONS; i++)
5867   {
5868     int graphic = toolbutton_info[i].graphic;
5869     struct GraphicInfo *gfx = &graphic_info[graphic];
5870     struct TextPosInfo *pos = toolbutton_info[i].pos;
5871     struct GadgetInfo *gi;
5872     Bitmap *deco_bitmap = None;
5873     int deco_x = 0, deco_y = 0, deco_xpos = 0, deco_ypos = 0;
5874     unsigned int event_mask = GD_EVENT_RELEASED;
5875     boolean is_touch_button = toolbutton_info[i].is_touch_button;
5876     int base_x = (is_touch_button ? 0 : DX);
5877     int base_y = (is_touch_button ? 0 : DY);
5878     int gd_x = gfx->src_x;
5879     int gd_y = gfx->src_y;
5880     int gd_xp = gfx->src_x + gfx->pressed_xoffset;
5881     int gd_yp = gfx->src_y + gfx->pressed_yoffset;
5882     int x = pos->x;
5883     int y = pos->y;
5884     int id = i;
5885
5886     // do not use touch buttons if overlay touch buttons are disabled
5887     if (is_touch_button && !setup.touch.overlay_buttons)
5888       continue;
5889
5890     if (global.use_envelope_request && !is_touch_button)
5891     {
5892       setRequestPosition(&base_x, &base_y, TRUE);
5893
5894       // check if request buttons are outside of envelope and fix, if needed
5895       if (x < 0 || x + gfx->width  > request.width ||
5896           y < 0 || y + gfx->height > request.height)
5897       {
5898         if (id == TOOL_CTRL_ID_YES)
5899         {
5900           x = 0;
5901           y = request.height - 2 * request.border_size - gfx->height;
5902         }
5903         else if (id == TOOL_CTRL_ID_NO)
5904         {
5905           x = request.width  - 2 * request.border_size - gfx->width;
5906           y = request.height - 2 * request.border_size - gfx->height;
5907         }
5908         else if (id == TOOL_CTRL_ID_CONFIRM)
5909         {
5910           x = (request.width - 2 * request.border_size - gfx->width) / 2;
5911           y = request.height - 2 * request.border_size - gfx->height;
5912         }
5913         else if (id >= TOOL_CTRL_ID_PLAYER_1 && id <= TOOL_CTRL_ID_PLAYER_4)
5914         {
5915           int player_nr = id - TOOL_CTRL_ID_PLAYER_1;
5916
5917           x = (request.width - 2 * request.border_size - gfx->width) / 2;
5918           y = request.height - 2 * request.border_size - gfx->height * 2;
5919
5920           x += (player_nr == 3 ? -1 : player_nr == 1 ? +1 : 0) * gfx->width;
5921           y += (player_nr == 0 ? -1 : player_nr == 2 ? +1 : 0) * gfx->height;
5922         }
5923       }
5924     }
5925
5926     if (id >= TOOL_CTRL_ID_PLAYER_1 && id <= TOOL_CTRL_ID_PLAYER_4 &&
5927         pos->draw_player)
5928     {
5929       int player_nr = id - TOOL_CTRL_ID_PLAYER_1;
5930
5931       getSizedGraphicSource(PLAYER_NR_GFX(IMG_PLAYER_1, player_nr), 0,
5932                             pos->size, &deco_bitmap, &deco_x, &deco_y);
5933       deco_xpos = (gfx->width  - pos->size) / 2;
5934       deco_ypos = (gfx->height - pos->size) / 2;
5935     }
5936
5937     gi = CreateGadget(GDI_CUSTOM_ID, id,
5938                       GDI_IMAGE_ID, graphic,
5939                       GDI_INFO_TEXT, toolbutton_info[i].infotext,
5940                       GDI_X, base_x + x,
5941                       GDI_Y, base_y + y,
5942                       GDI_WIDTH, gfx->width,
5943                       GDI_HEIGHT, gfx->height,
5944                       GDI_TYPE, GD_TYPE_NORMAL_BUTTON,
5945                       GDI_STATE, GD_BUTTON_UNPRESSED,
5946                       GDI_DESIGN_UNPRESSED, gfx->bitmap, gd_x, gd_y,
5947                       GDI_DESIGN_PRESSED, gfx->bitmap, gd_xp, gd_yp,
5948                       GDI_DECORATION_DESIGN, deco_bitmap, deco_x, deco_y,
5949                       GDI_DECORATION_POSITION, deco_xpos, deco_ypos,
5950                       GDI_DECORATION_SIZE, pos->size, pos->size,
5951                       GDI_DECORATION_SHIFTING, 1, 1,
5952                       GDI_DIRECT_DRAW, FALSE,
5953                       GDI_OVERLAY_TOUCH_BUTTON, is_touch_button,
5954                       GDI_EVENT_MASK, event_mask,
5955                       GDI_CALLBACK_ACTION, HandleToolButtons,
5956                       GDI_END);
5957
5958     if (gi == NULL)
5959       Fail("cannot create gadget");
5960
5961     tool_gadget[id] = gi;
5962   }
5963 }
5964
5965 void FreeToolButtons(void)
5966 {
5967   int i;
5968
5969   for (i = 0; i < NUM_TOOL_BUTTONS; i++)
5970     FreeGadget(tool_gadget[i]);
5971 }
5972
5973 static void MapToolButtons(unsigned int req_state)
5974 {
5975   if (req_state & REQ_ASK)
5976   {
5977     MapGadget(tool_gadget[TOOL_CTRL_ID_YES]);
5978     MapGadget(tool_gadget[TOOL_CTRL_ID_NO]);
5979     MapGadget(tool_gadget[TOOL_CTRL_ID_TOUCH_YES]);
5980     MapGadget(tool_gadget[TOOL_CTRL_ID_TOUCH_NO]);
5981   }
5982   else if (req_state & REQ_CONFIRM)
5983   {
5984     MapGadget(tool_gadget[TOOL_CTRL_ID_CONFIRM]);
5985     MapGadget(tool_gadget[TOOL_CTRL_ID_TOUCH_CONFIRM]);
5986   }
5987   else if (req_state & REQ_PLAYER)
5988   {
5989     MapGadget(tool_gadget[TOOL_CTRL_ID_PLAYER_1]);
5990     MapGadget(tool_gadget[TOOL_CTRL_ID_PLAYER_2]);
5991     MapGadget(tool_gadget[TOOL_CTRL_ID_PLAYER_3]);
5992     MapGadget(tool_gadget[TOOL_CTRL_ID_PLAYER_4]);
5993   }
5994 }
5995
5996 static void UnmapToolButtons(void)
5997 {
5998   int i;
5999
6000   for (i = 0; i < NUM_TOOL_BUTTONS; i++)
6001     UnmapGadget(tool_gadget[i]);
6002 }
6003
6004 static void HandleToolButtons(struct GadgetInfo *gi)
6005 {
6006   request_gadget_id = gi->custom_id;
6007 }
6008
6009 static struct Mapping_BD_to_RND_object
6010 {
6011   int element_bd;
6012   boolean is_rnd_to_bd_mapping;         // unique mapping BD <-> RND
6013
6014   int element_rnd;
6015   int action;
6016   int direction;
6017 }
6018 bd_object_mapping_list[] =
6019 {
6020   // additional RND style elements mapped to BD style elements must be listed first
6021
6022   {
6023     O_DIRT,                                     TRUE,
6024     EL_SAND,                                    -1, -1
6025   },
6026   {
6027     O_STONE,                                    TRUE,
6028     EL_BD_ROCK,                                 -1, -1
6029   },
6030   {
6031     O_BRICK,                                    TRUE,
6032     EL_BD_WALL,                                 -1, -1
6033   },
6034   {
6035     O_STEEL,                                    TRUE,
6036     EL_STEELWALL,                               -1, -1
6037   },
6038   {
6039     O_DIAMOND,                                  TRUE,
6040     EL_BD_DIAMOND,                              -1, -1
6041   },
6042   {
6043     O_INBOX,                                    TRUE,
6044     EL_PLAYER_1,                                -1, -1
6045   },
6046   {
6047     O_INBOX,                                    TRUE,
6048     EL_PLAYER_2,                                -1, -1
6049   },
6050   {
6051     O_INBOX,                                    TRUE,
6052     EL_PLAYER_3,                                -1, -1
6053   },
6054   {
6055     O_INBOX,                                    TRUE,
6056     EL_PLAYER_4,                                -1, -1
6057   },
6058   {
6059     O_PRE_OUTBOX,                               TRUE,
6060     EL_EXIT_CLOSED,                             -1, -1
6061   },
6062
6063   // BD style elements with their corresponding RND style elements
6064
6065   {
6066     O_SPACE,                                    TRUE,
6067     EL_EMPTY,                                   -1, -1
6068   },
6069   {
6070     O_DIRT,                                     TRUE,
6071     EL_BD_SAND,                                 -1, -1
6072   },
6073   {
6074     O_DIRT_SLOPED_UP_RIGHT,                     TRUE,
6075     EL_BD_SAND_SLOPED_UP_RIGHT,                 -1, -1
6076   },
6077   {
6078     O_DIRT_SLOPED_UP_LEFT,                      TRUE,
6079     EL_BD_SAND_SLOPED_UP_LEFT,                  -1, -1
6080   },
6081   {
6082     O_DIRT_SLOPED_DOWN_LEFT,                    TRUE,
6083     EL_BD_SAND_SLOPED_DOWN_LEFT,                -1, -1
6084   },
6085   {
6086     O_DIRT_SLOPED_DOWN_RIGHT,                   TRUE,
6087     EL_BD_SAND_SLOPED_DOWN_RIGHT,               -1, -1
6088   },
6089   {
6090     O_DIRT_BALL,                                TRUE,
6091     EL_BD_SAND_BALL,                            -1, -1
6092   },
6093   {
6094     O_DIRT_BALL_F,                              FALSE,
6095     EL_BD_SAND_BALL,                            ACTION_FALLING, -1
6096   },
6097   {
6098     O_DIRT_LOOSE,                               TRUE,
6099     EL_BD_SAND_LOOSE,                           -1, -1
6100   },
6101   {
6102     O_DIRT_LOOSE_F,                             FALSE,
6103     EL_BD_SAND_LOOSE,                           ACTION_FALLING, -1
6104   },
6105   {
6106     O_DIRT2,                                    TRUE,
6107     EL_BD_SAND_2,                               -1, -1
6108   },
6109   {
6110     O_BRICK,                                    TRUE,
6111     EL_BD_WALL,                                 -1, -1
6112   },
6113   {
6114     O_BRICK_SLOPED_UP_RIGHT,                    TRUE,
6115     EL_BD_WALL_SLOPED_UP_RIGHT,                 -1, -1
6116   },
6117   {
6118     O_BRICK_SLOPED_UP_LEFT,                     TRUE,
6119     EL_BD_WALL_SLOPED_UP_LEFT,                  -1, -1
6120   },
6121   {
6122     O_BRICK_SLOPED_DOWN_LEFT,                   TRUE,
6123     EL_BD_WALL_SLOPED_DOWN_LEFT,                -1, -1
6124   },
6125   {
6126     O_BRICK_SLOPED_DOWN_RIGHT,                  TRUE,
6127     EL_BD_WALL_SLOPED_DOWN_RIGHT,               -1, -1
6128   },
6129   {
6130     O_BRICK_NON_SLOPED,                         TRUE,
6131     EL_BD_WALL_NON_SLOPED,                      -1, -1
6132   },
6133   {
6134     O_MAGIC_WALL,                               TRUE,
6135     EL_BD_MAGIC_WALL,                           ACTION_ACTIVE, -1
6136   },
6137   {
6138     O_PRE_OUTBOX,                               TRUE,
6139     EL_BD_EXIT_CLOSED,                          -1, -1
6140   },
6141   {
6142     O_OUTBOX,                                   TRUE,
6143     EL_BD_EXIT_OPEN,                            -1, -1
6144   },
6145   {
6146     O_PRE_INVIS_OUTBOX,                         TRUE,
6147     EL_BD_INVISIBLE_EXIT_CLOSED,                -1, -1
6148   },
6149   {
6150     O_INVIS_OUTBOX,                             TRUE,
6151     EL_BD_INVISIBLE_EXIT_OPEN,                  -1, -1
6152   },
6153   {
6154     O_STEEL,                                    TRUE,
6155     EL_BD_STEELWALL,                            -1, -1
6156   },
6157   {
6158     O_STEEL_SLOPED_UP_RIGHT,                    TRUE,
6159     EL_BD_STEELWALL_SLOPED_UP_RIGHT,            -1, -1
6160   },
6161   {
6162     O_STEEL_SLOPED_UP_LEFT,                     TRUE,
6163     EL_BD_STEELWALL_SLOPED_UP_LEFT,             -1, -1
6164   },
6165   {
6166     O_STEEL_SLOPED_DOWN_LEFT,                   TRUE,
6167     EL_BD_STEELWALL_SLOPED_DOWN_LEFT,           -1, -1
6168   },
6169   {
6170     O_STEEL_SLOPED_DOWN_RIGHT,                  TRUE,
6171     EL_BD_STEELWALL_SLOPED_DOWN_RIGHT,          -1, -1
6172   },
6173   {
6174     O_STEEL_EXPLODABLE,                         TRUE,
6175     EL_BD_STEELWALL_EXPLODABLE,                 -1, -1
6176   },
6177   {
6178     O_STEEL_EATABLE,                            TRUE,
6179     EL_BD_STEELWALL_DIGGABLE,                   -1, -1
6180   },
6181   {
6182     O_BRICK_EATABLE,                            TRUE,
6183     EL_BD_WALL_DIGGABLE,                        -1, -1
6184   },
6185   {
6186     O_STONE,                                    TRUE,
6187     EL_BD_ROCK,                                 -1, -1
6188   },
6189   {
6190     O_STONE_F,                                  FALSE,
6191     EL_BD_ROCK,                                 ACTION_FALLING, -1
6192   },
6193   {
6194     O_FLYING_STONE,                             TRUE,
6195     EL_BD_FLYING_ROCK,                          -1, -1
6196   },
6197   {
6198     O_FLYING_STONE_F,                           FALSE,
6199     EL_BD_FLYING_ROCK,                          ACTION_FALLING, -1
6200   },
6201   {
6202     O_MEGA_STONE,                               TRUE,
6203     EL_BD_MEGA_ROCK,                            -1, -1
6204   },
6205   {
6206     O_MEGA_STONE_F,                             FALSE,
6207     EL_BD_MEGA_ROCK,                            ACTION_FALLING, -1
6208   },
6209   {
6210     O_DIAMOND,                                  TRUE,
6211     EL_BD_DIAMOND,                              -1, -1
6212   },
6213   {
6214     O_DIAMOND_F,                                FALSE,
6215     EL_BD_DIAMOND,                              ACTION_FALLING, -1
6216   },
6217   {
6218     O_FLYING_DIAMOND,                           TRUE,
6219     EL_BD_FLYING_DIAMOND,                       -1, -1
6220   },
6221   {
6222     O_FLYING_DIAMOND_F,                         FALSE,
6223     EL_BD_FLYING_DIAMOND,                       ACTION_FALLING, -1
6224   },
6225   {
6226     O_NUT,                                      TRUE,
6227     EL_BD_NUT,                                  -1, -1
6228   },
6229   {
6230     O_NUT_F,                                    FALSE,
6231     EL_BD_NUT,                                  ACTION_FALLING, -1
6232   },
6233   {
6234     O_BLADDER_SPENDER,                          TRUE,
6235     EL_BD_BLADDER_SPENDER,                      -1, -1
6236   },
6237   {
6238     O_INBOX,                                    TRUE,
6239     EL_BD_INBOX,                                -1, -1
6240   },
6241   {
6242     O_H_EXPANDING_WALL,                         TRUE,
6243     EL_BD_EXPANDABLE_WALL_HORIZONTAL,           -1, -1
6244   },
6245   {
6246     O_V_EXPANDING_WALL,                         TRUE,
6247     EL_BD_EXPANDABLE_WALL_VERTICAL,             -1, -1
6248   },
6249   {
6250     O_EXPANDING_WALL,                           TRUE,
6251     EL_BD_EXPANDABLE_WALL_ANY,                  -1, -1
6252   },
6253   {
6254     O_H_EXPANDING_STEEL_WALL,                   TRUE,
6255     EL_BD_EXPANDABLE_STEELWALL_HORIZONTAL,      -1, -1
6256   },
6257   {
6258     O_V_EXPANDING_STEEL_WALL,                   TRUE,
6259     EL_BD_EXPANDABLE_STEELWALL_VERTICAL,        -1, -1
6260   },
6261   {
6262     O_EXPANDING_STEEL_WALL,                     TRUE,
6263     EL_BD_EXPANDABLE_STEELWALL_ANY,             -1, -1
6264   },
6265   {
6266     O_EXPANDING_WALL_SWITCH,                    TRUE,
6267     EL_BD_EXPANDABLE_WALL_SWITCH_HORIZONTAL,    -1, -1
6268   },
6269   {
6270     O_CREATURE_SWITCH,                          TRUE,
6271     EL_BD_CREATURE_SWITCH,                      -1, -1
6272   },
6273   {
6274     O_BITER_SWITCH,                             TRUE,
6275     EL_BD_BITER_SWITCH_1,                       -1, -1
6276   },
6277   {
6278     O_REPLICATOR_SWITCH,                        TRUE,
6279     EL_BD_REPLICATOR_SWITCH,                    -1, -1
6280   },
6281   {
6282     O_CONVEYOR_SWITCH,                          TRUE,
6283     EL_BD_CONVEYOR_SWITCH,                      -1, -1
6284   },
6285   {
6286     O_CONVEYOR_DIR_SWITCH,                      TRUE,
6287     EL_BD_CONVEYOR_DIR_SWITCH_RIGHT,            -1, -1
6288   },
6289   {
6290     O_ACID,                                     TRUE,
6291     EL_BD_ACID,                                 -1, -1
6292   },
6293   {
6294     O_FALLING_WALL,                             TRUE,
6295     EL_BD_FALLING_WALL,                         -1, -1
6296   },
6297   {
6298     O_FALLING_WALL_F,                           FALSE,
6299     EL_BD_FALLING_WALL,                         ACTION_FALLING, -1
6300   },
6301   {
6302     O_BOX,                                      TRUE,
6303     EL_BD_BOX,                                  -1, -1
6304   },
6305   {
6306     O_TIME_PENALTY,                             TRUE,
6307     EL_BD_TIME_PENALTY,                         -1, -1
6308   },
6309   {
6310     O_GRAVESTONE,                               TRUE,
6311     EL_BD_GRAVESTONE,                           -1, -1
6312   },
6313   {
6314     O_STONE_GLUED,                              TRUE,
6315     EL_BD_ROCK_GLUED,                           -1, -1
6316   },
6317   {
6318     O_DIAMOND_GLUED,                            TRUE,
6319     EL_BD_DIAMOND_GLUED,                        -1, -1
6320   },
6321   {
6322     O_DIAMOND_KEY,                              TRUE,
6323     EL_BD_DIAMOND_KEY,                          -1, -1
6324   },
6325   {
6326     O_TRAPPED_DIAMOND,                          TRUE,
6327     EL_BD_TRAPPED_DIAMOND,                      -1, -1
6328   },
6329   {
6330     O_CLOCK,                                    TRUE,
6331     EL_BD_CLOCK,                                -1, -1
6332   },
6333   {
6334     O_DIRT_GLUED,                               TRUE,
6335     EL_BD_SAND_GLUED,                           -1, -1
6336   },
6337   {
6338     O_KEY_1,                                    TRUE,
6339     EL_BD_KEY_1,                                -1, -1
6340   },
6341   {
6342     O_KEY_2,                                    TRUE,
6343     EL_BD_KEY_2,                                -1, -1
6344   },
6345   {
6346     O_KEY_3,                                    TRUE,
6347     EL_BD_KEY_3,                                -1, -1
6348   },
6349   {
6350     O_DOOR_1,                                   TRUE,
6351     EL_BD_GATE_1,                               -1, -1
6352   },
6353   {
6354     O_DOOR_2,                                   TRUE,
6355     EL_BD_GATE_2,                               -1, -1
6356   },
6357   {
6358     O_DOOR_3,                                   TRUE,
6359     EL_BD_GATE_3,                               -1, -1
6360   },
6361   {
6362     O_POT,                                      TRUE,
6363     EL_BD_POT,                                  -1, -1
6364   },
6365   {
6366     O_GRAVITY_SWITCH,                           TRUE,
6367     EL_BD_GRAVITY_SWITCH,                       -1, -1
6368   },
6369   {
6370     O_PNEUMATIC_HAMMER,                         TRUE,
6371     EL_BD_PNEUMATIC_HAMMER,                     -1, -1
6372   },
6373   {
6374     O_TELEPORTER,                               TRUE,
6375     EL_BD_TELEPORTER,                           -1, -1
6376   },
6377   {
6378     O_SKELETON,                                 TRUE,
6379     EL_BD_SKELETON,                             -1, -1
6380   },
6381   {
6382     O_WATER,                                    TRUE,
6383     EL_BD_WATER,                                -1, -1
6384   },
6385   {
6386     O_WATER_1,                                  FALSE,
6387     EL_BD_WATER,                                -1, -1
6388   },
6389   {
6390     O_WATER_2,                                  FALSE,
6391     EL_BD_WATER,                                -1, -1
6392   },
6393   {
6394     O_WATER_3,                                  FALSE,
6395     EL_BD_WATER,                                -1, -1
6396   },
6397   {
6398     O_WATER_4,                                  FALSE,
6399     EL_BD_WATER,                                -1, -1
6400   },
6401   {
6402     O_WATER_5,                                  FALSE,
6403     EL_BD_WATER,                                -1, -1
6404   },
6405   {
6406     O_WATER_6,                                  FALSE,
6407     EL_BD_WATER,                                -1, -1
6408   },
6409   {
6410     O_WATER_7,                                  FALSE,
6411     EL_BD_WATER,                                -1, -1
6412   },
6413   {
6414     O_WATER_8,                                  FALSE,
6415     EL_BD_WATER,                                -1, -1
6416   },
6417   {
6418     O_WATER_9,                                  FALSE,
6419     EL_BD_WATER,                                -1, -1
6420   },
6421   {
6422     O_WATER_10,                                 FALSE,
6423     EL_BD_WATER,                                -1, -1
6424   },
6425   {
6426     O_WATER_11,                                 FALSE,
6427     EL_BD_WATER,                                -1, -1
6428   },
6429   {
6430     O_WATER_12,                                 FALSE,
6431     EL_BD_WATER,                                -1, -1
6432   },
6433   {
6434     O_WATER_13,                                 FALSE,
6435     EL_BD_WATER,                                -1, -1
6436   },
6437   {
6438     O_WATER_14,                                 FALSE,
6439     EL_BD_WATER,                                -1, -1
6440   },
6441   {
6442     O_WATER_15,                                 FALSE,
6443     EL_BD_WATER,                                -1, -1
6444   },
6445   {
6446     O_WATER_16,                                 FALSE,
6447     EL_BD_WATER,                                -1, -1
6448   },
6449   {
6450     O_COW_1,                                    TRUE,
6451     EL_BD_COW_LEFT,                             -1, -1
6452   },
6453   {
6454     O_COW_2,                                    TRUE,
6455     EL_BD_COW_UP,                               -1, -1
6456   },
6457   {
6458     O_COW_3,                                    TRUE,
6459     EL_BD_COW_RIGHT,                            -1, -1
6460   },
6461   {
6462     O_COW_4,                                    TRUE,
6463     EL_BD_COW_DOWN,                             -1, -1
6464   },
6465   {
6466     O_COW_ENCLOSED_1,                           FALSE,
6467     EL_BD_COW_DOWN,                             -1, -1
6468   },
6469   {
6470     O_COW_ENCLOSED_2,                           FALSE,
6471     EL_BD_COW_DOWN,                             -1, -1
6472   },
6473   {
6474     O_COW_ENCLOSED_3,                           FALSE,
6475     EL_BD_COW_DOWN,                             -1, -1
6476   },
6477   {
6478     O_COW_ENCLOSED_4,                           FALSE,
6479     EL_BD_COW_DOWN,                             -1, -1
6480   },
6481   {
6482     O_COW_ENCLOSED_5,                           FALSE,
6483     EL_BD_COW_DOWN,                             -1, -1
6484   },
6485   {
6486     O_COW_ENCLOSED_6,                           FALSE,
6487     EL_BD_COW_DOWN,                             -1, -1
6488   },
6489   {
6490     O_COW_ENCLOSED_7,                           FALSE,
6491     EL_BD_COW_DOWN,                             -1, -1
6492   },
6493   {
6494     O_WALLED_DIAMOND,                           TRUE,
6495     EL_BD_WALL_DIAMOND,                         -1, -1
6496   },
6497   {
6498     O_WALLED_KEY_1,                             TRUE,
6499     EL_BD_WALL_KEY_1,                           -1, -1
6500   },
6501   {
6502     O_WALLED_KEY_2,                             TRUE,
6503     EL_BD_WALL_KEY_2,                           -1, -1
6504   },
6505   {
6506     O_WALLED_KEY_3,                             TRUE,
6507     EL_BD_WALL_KEY_3,                           -1, -1
6508   },
6509   {
6510     O_AMOEBA,                                   TRUE,
6511     EL_BD_AMOEBA,                               -1, -1
6512   },
6513   {
6514     O_AMOEBA_2,                                 TRUE,
6515     EL_BD_AMOEBA_2,                             -1, -1
6516   },
6517   {
6518     O_REPLICATOR,                               TRUE,
6519     EL_BD_REPLICATOR,                           -1, -1
6520   },
6521   {
6522     O_CONVEYOR_LEFT,                            TRUE,
6523     EL_BD_CONVEYOR_LEFT,                        -1, -1
6524   },
6525   {
6526     O_CONVEYOR_RIGHT,                           TRUE,
6527     EL_BD_CONVEYOR_RIGHT,                       -1, -1
6528   },
6529   {
6530     O_LAVA,                                     TRUE,
6531     EL_BD_LAVA,                                 -1, -1
6532   },
6533   {
6534     O_SWEET,                                    TRUE,
6535     EL_BD_SWEET,                                -1, -1
6536   },
6537   {
6538     O_VOODOO,                                   TRUE,
6539     EL_BD_VOODOO_DOLL,                          -1, -1
6540   },
6541   {
6542     O_SLIME,                                    TRUE,
6543     EL_BD_SLIME,                                -1, -1
6544   },
6545   {
6546     O_BLADDER,                                  TRUE,
6547     EL_BD_BLADDER,                              -1, -1
6548   },
6549   {
6550     O_BLADDER_1,                                FALSE,
6551     EL_BD_BLADDER,                              -1, -1
6552   },
6553   {
6554     O_BLADDER_2,                                FALSE,
6555     EL_BD_BLADDER,                              -1, -1
6556   },
6557   {
6558     O_BLADDER_3,                                FALSE,
6559     EL_BD_BLADDER,                              -1, -1
6560   },
6561   {
6562     O_BLADDER_4,                                FALSE,
6563     EL_BD_BLADDER,                              -1, -1
6564   },
6565   {
6566     O_BLADDER_5,                                FALSE,
6567     EL_BD_BLADDER,                              -1, -1
6568   },
6569   {
6570     O_BLADDER_6,                                FALSE,
6571     EL_BD_BLADDER,                              -1, -1
6572   },
6573   {
6574     O_BLADDER_7,                                FALSE,
6575     EL_BD_BLADDER,                              -1, -1
6576   },
6577   {
6578     O_BLADDER_8,                                FALSE,
6579     EL_BD_BLADDER,                              -1, -1
6580   },
6581   {
6582     O_WAITING_STONE,                            TRUE,
6583     EL_BD_WAITING_ROCK,                         -1, -1
6584   },
6585   {
6586     O_CHASING_STONE,                            TRUE,
6587     EL_BD_CHASING_ROCK,                         -1, -1
6588   },
6589   {
6590     O_GHOST,                                    TRUE,
6591     EL_BD_GHOST,                                -1, -1
6592   },
6593   {
6594     O_FIREFLY_1,                                TRUE,
6595     EL_BD_FIREFLY_LEFT,                         -1, -1
6596   },
6597   {
6598     O_FIREFLY_2,                                TRUE,
6599     EL_BD_FIREFLY_UP,                           -1, -1
6600   },
6601   {
6602     O_FIREFLY_3,                                TRUE,
6603     EL_BD_FIREFLY_RIGHT,                        -1, -1
6604   },
6605   {
6606     O_FIREFLY_4,                                TRUE,
6607     EL_BD_FIREFLY_DOWN,                         -1, -1
6608   },
6609   {
6610     O_ALT_FIREFLY_1,                            TRUE,
6611     EL_BD_FIREFLY_2_LEFT,                       -1, -1
6612   },
6613   {
6614     O_ALT_FIREFLY_2,                            TRUE,
6615     EL_BD_FIREFLY_2_UP,                         -1, -1
6616   },
6617   {
6618     O_ALT_FIREFLY_3,                            TRUE,
6619     EL_BD_FIREFLY_2_RIGHT,                      -1, -1
6620   },
6621   {
6622     O_ALT_FIREFLY_4,                            TRUE,
6623     EL_BD_FIREFLY_2_DOWN,                       -1, -1
6624   },
6625   {
6626     O_BUTTER_1,                                 TRUE,
6627     EL_BD_BUTTERFLY_LEFT,                       -1, -1
6628   },
6629   {
6630     O_BUTTER_2,                                 TRUE,
6631     EL_BD_BUTTERFLY_UP,                         -1, -1
6632   },
6633   {
6634     O_BUTTER_3,                                 TRUE,
6635     EL_BD_BUTTERFLY_RIGHT,                      -1, -1
6636   },
6637   {
6638     O_BUTTER_4,                                 TRUE,
6639     EL_BD_BUTTERFLY_DOWN,                       -1, -1
6640   },
6641   {
6642     O_ALT_BUTTER_1,                             TRUE,
6643     EL_BD_BUTTERFLY_2_LEFT,                     -1, -1
6644   },
6645   {
6646     O_ALT_BUTTER_2,                             TRUE,
6647     EL_BD_BUTTERFLY_2_UP,                       -1, -1
6648   },
6649   {
6650     O_ALT_BUTTER_3,                             TRUE,
6651     EL_BD_BUTTERFLY_2_RIGHT,                    -1, -1
6652   },
6653   {
6654     O_ALT_BUTTER_4,                             TRUE,
6655     EL_BD_BUTTERFLY_2_DOWN,                     -1, -1
6656   },
6657   {
6658     O_STONEFLY_1,                               TRUE,
6659     EL_BD_STONEFLY_LEFT,                        -1, -1
6660   },
6661   {
6662     O_STONEFLY_2,                               TRUE,
6663     EL_BD_STONEFLY_UP,                          -1, -1
6664   },
6665   {
6666     O_STONEFLY_3,                               TRUE,
6667     EL_BD_STONEFLY_RIGHT,                       -1, -1
6668   },
6669   {
6670     O_STONEFLY_4,                               TRUE,
6671     EL_BD_STONEFLY_DOWN,                        -1, -1
6672   },
6673   {
6674     O_BITER_1,                                  TRUE,
6675     EL_BD_BITER_UP,                             -1, -1
6676   },
6677   {
6678     O_BITER_2,                                  TRUE,
6679     EL_BD_BITER_RIGHT,                          -1, -1
6680   },
6681   {
6682     O_BITER_3,                                  TRUE,
6683     EL_BD_BITER_DOWN,                           -1, -1
6684   },
6685   {
6686     O_BITER_4,                                  TRUE,
6687     EL_BD_BITER_LEFT,                           -1, -1
6688   },
6689   {
6690     O_DRAGONFLY_1,                              TRUE,
6691     EL_BD_DRAGONFLY_LEFT,                       -1, -1
6692   },
6693   {
6694     O_DRAGONFLY_2,                              TRUE,
6695     EL_BD_DRAGONFLY_UP,                         -1, -1
6696   },
6697   {
6698     O_DRAGONFLY_3,                              TRUE,
6699     EL_BD_DRAGONFLY_RIGHT,                      -1, -1
6700   },
6701   {
6702     O_DRAGONFLY_4,                              TRUE,
6703     EL_BD_DRAGONFLY_DOWN,                       -1, -1
6704   },
6705   {
6706     O_PRE_PL_1,                                 FALSE,
6707     EL_BD_PLAYER,                               ACTION_GROWING, -1
6708   },
6709   {
6710     O_PRE_PL_2,                                 FALSE,
6711     EL_BD_PLAYER,                               ACTION_GROWING, -1
6712   },
6713   {
6714     O_PRE_PL_3,                                 FALSE,
6715     EL_BD_PLAYER,                               ACTION_GROWING, -1
6716   },
6717   {
6718     O_PLAYER,                                   TRUE,
6719     EL_BD_PLAYER,                               -1, -1
6720   },
6721   {
6722     O_PLAYER_BOMB,                              TRUE,
6723     EL_BD_PLAYER_WITH_BOMB,                     -1, -1
6724   },
6725   {
6726     O_PLAYER_GLUED,                             TRUE,
6727     EL_BD_PLAYER_GLUED,                         -1, -1
6728   },
6729   {
6730     O_PLAYER_STIRRING,                          TRUE,
6731     EL_BD_PLAYER_STIRRING,                      -1, -1
6732   },
6733   {
6734     O_BOMB,                                     TRUE,
6735     EL_BD_BOMB,                                 -1, -1
6736   },
6737   {
6738     O_BOMB_TICK_1,                              FALSE,
6739     EL_BD_BOMB,                                 ACTION_ACTIVE, -1
6740   },
6741   {
6742     O_BOMB_TICK_2,                              FALSE,
6743     EL_BD_BOMB,                                 ACTION_ACTIVE, -1
6744   },
6745   {
6746     O_BOMB_TICK_3,                              FALSE,
6747     EL_BD_BOMB,                                 ACTION_ACTIVE, -1
6748   },
6749   {
6750     O_BOMB_TICK_4,                              FALSE,
6751     EL_BD_BOMB,                                 ACTION_ACTIVE, -1
6752   },
6753   {
6754     O_BOMB_TICK_5,                              FALSE,
6755     EL_BD_BOMB,                                 ACTION_ACTIVE, -1
6756   },
6757   {
6758     O_BOMB_TICK_6,                              FALSE,
6759     EL_BD_BOMB,                                 ACTION_ACTIVE, -1
6760   },
6761   {
6762     O_BOMB_TICK_7,                              FALSE,
6763     EL_BD_BOMB,                                 ACTION_ACTIVE, -1
6764   },
6765   {
6766     O_NITRO_PACK,                               TRUE,
6767     EL_BD_NITRO_PACK,                           -1, -1
6768   },
6769   {
6770     O_NITRO_PACK_F,                             FALSE,
6771     EL_BD_NITRO_PACK,                           ACTION_FALLING, -1
6772   },
6773   {
6774     O_NITRO_PACK_EXPLODE,                       FALSE,
6775     EL_BD_NITRO_PACK,                           ACTION_EXPLODING, -1
6776   },
6777   {
6778     O_PRE_CLOCK_1,                              FALSE,
6779     EL_BD_CLOCK,                                ACTION_GROWING, -1
6780   },
6781   {
6782     O_PRE_CLOCK_2,                              FALSE,
6783     EL_BD_CLOCK,                                ACTION_GROWING, -1
6784   },
6785   {
6786     O_PRE_CLOCK_3,                              FALSE,
6787     EL_BD_CLOCK,                                ACTION_GROWING, -1
6788   },
6789   {
6790     O_PRE_CLOCK_4,                              FALSE,
6791     EL_BD_CLOCK,                                ACTION_GROWING, -1
6792   },
6793   {
6794     O_PRE_DIA_1,                                FALSE,
6795     EL_BD_DIAMOND,                              ACTION_GROWING, -1
6796   },
6797   {
6798     O_PRE_DIA_2,                                FALSE,
6799     EL_BD_DIAMOND,                              ACTION_GROWING, -1
6800   },
6801   {
6802     O_PRE_DIA_3,                                FALSE,
6803     EL_BD_DIAMOND,                              ACTION_GROWING, -1
6804   },
6805   {
6806     O_PRE_DIA_4,                                FALSE,
6807     EL_BD_DIAMOND,                              ACTION_GROWING, -1
6808   },
6809   {
6810     O_PRE_DIA_5,                                FALSE,
6811     EL_BD_DIAMOND,                              ACTION_GROWING, -1
6812   },
6813   {
6814     O_EXPLODE_1,                                FALSE,
6815     EL_DEFAULT,                                 ACTION_EXPLODING, -1
6816   },
6817   {
6818     O_EXPLODE_2,                                FALSE,
6819     EL_DEFAULT,                                 ACTION_EXPLODING, -1
6820   },
6821   {
6822     O_EXPLODE_3,                                FALSE,
6823     EL_DEFAULT,                                 ACTION_EXPLODING, -1
6824   },
6825   {
6826     O_EXPLODE_4,                                FALSE,
6827     EL_DEFAULT,                                 ACTION_EXPLODING, -1
6828   },
6829   {
6830     O_EXPLODE_5,                                FALSE,
6831     EL_DEFAULT,                                 ACTION_EXPLODING, -1
6832   },
6833   {
6834     O_PRE_STONE_1,                              FALSE,
6835     EL_BD_ROCK,                                 ACTION_GROWING, -1
6836   },
6837   {
6838     O_PRE_STONE_2,                              FALSE,
6839     EL_BD_ROCK,                                 ACTION_GROWING, -1
6840   },
6841   {
6842     O_PRE_STONE_3,                              FALSE,
6843     EL_BD_ROCK,                                 ACTION_GROWING, -1
6844   },
6845   {
6846     O_PRE_STONE_4,                              FALSE,
6847     EL_BD_ROCK,                                 ACTION_GROWING, -1
6848   },
6849   {
6850     O_PRE_STEEL_1,                              FALSE,
6851     EL_BD_STEELWALL,                            ACTION_GROWING, -1
6852   },
6853   {
6854     O_PRE_STEEL_2,                              FALSE,
6855     EL_BD_STEELWALL,                            ACTION_GROWING, -1
6856   },
6857   {
6858     O_PRE_STEEL_3,                              FALSE,
6859     EL_BD_STEELWALL,                            ACTION_GROWING, -1
6860   },
6861   {
6862     O_PRE_STEEL_4,                              FALSE,
6863     EL_BD_STEELWALL,                            ACTION_GROWING, -1
6864   },
6865   {
6866     O_GHOST_EXPL_1,                             FALSE,
6867     EL_BD_GHOST,                                ACTION_EXPLODING, -1
6868   },
6869   {
6870     O_GHOST_EXPL_2,                             FALSE,
6871     EL_BD_GHOST,                                ACTION_EXPLODING, -1
6872   },
6873   {
6874     O_GHOST_EXPL_3,                             FALSE,
6875     EL_BD_GHOST,                                ACTION_EXPLODING, -1
6876   },
6877   {
6878     O_GHOST_EXPL_4,                             FALSE,
6879     EL_BD_GHOST,                                ACTION_EXPLODING, -1
6880   },
6881   {
6882     O_BOMB_EXPL_1,                              FALSE,
6883     EL_BD_BOMB,                                 ACTION_EXPLODING, -1
6884   },
6885   {
6886     O_BOMB_EXPL_2,                              FALSE,
6887     EL_BD_BOMB,                                 ACTION_EXPLODING, -1
6888   },
6889   {
6890     O_BOMB_EXPL_3,                              FALSE,
6891     EL_BD_BOMB,                                 ACTION_EXPLODING, -1
6892   },
6893   {
6894     O_BOMB_EXPL_4,                              FALSE,
6895     EL_BD_BOMB,                                 ACTION_EXPLODING, -1
6896   },
6897   {
6898     O_NITRO_EXPL_1,                             FALSE,
6899     EL_BD_NITRO_PACK,                           ACTION_EXPLODING, -1
6900   },
6901   {
6902     O_NITRO_EXPL_2,                             FALSE,
6903     EL_BD_NITRO_PACK,                           ACTION_EXPLODING, -1
6904   },
6905   {
6906     O_NITRO_EXPL_3,                             FALSE,
6907     EL_BD_NITRO_PACK,                           ACTION_EXPLODING, -1
6908   },
6909   {
6910     O_NITRO_EXPL_4,                             FALSE,
6911     EL_BD_NITRO_PACK,                           ACTION_EXPLODING, -1
6912   },
6913   {
6914     O_AMOEBA_2_EXPL_1,                          FALSE,
6915     EL_BD_AMOEBA_2,                             ACTION_EXPLODING, -1
6916   },
6917   {
6918     O_AMOEBA_2_EXPL_2,                          FALSE,
6919     EL_BD_AMOEBA_2,                             ACTION_EXPLODING, -1
6920   },
6921   {
6922     O_AMOEBA_2_EXPL_3,                          FALSE,
6923     EL_BD_AMOEBA_2,                             ACTION_EXPLODING, -1
6924   },
6925   {
6926     O_AMOEBA_2_EXPL_4,                          FALSE,
6927     EL_BD_AMOEBA_2,                             ACTION_EXPLODING, -1
6928   },
6929   {
6930     O_NUT_EXPL_1,                               FALSE,
6931     EL_BD_NUT,                                  ACTION_BREAKING, -1
6932   },
6933   {
6934     O_NUT_EXPL_2,                               FALSE,
6935     EL_BD_NUT,                                  ACTION_BREAKING, -1
6936   },
6937   {
6938     O_NUT_EXPL_3,                               FALSE,
6939     EL_BD_NUT,                                  ACTION_BREAKING, -1
6940   },
6941   {
6942     O_NUT_EXPL_4,                               FALSE,
6943     EL_BD_NUT,                                  ACTION_BREAKING, -1
6944   },
6945   {
6946     O_PLAYER_PNEUMATIC_LEFT,                    FALSE,
6947     EL_BD_PLAYER,                               ACTION_HITTING, MV_BIT_LEFT
6948   },
6949   {
6950     O_PLAYER_PNEUMATIC_RIGHT,                   FALSE,
6951     EL_BD_PLAYER,                               ACTION_HITTING, MV_BIT_RIGHT
6952   },
6953   {
6954     O_PNEUMATIC_ACTIVE_LEFT,                    TRUE,
6955     EL_BD_PNEUMATIC_HAMMER,                     ACTION_HITTING, MV_BIT_LEFT
6956   },
6957   {
6958     O_PNEUMATIC_ACTIVE_RIGHT,                   TRUE,
6959     EL_BD_PNEUMATIC_HAMMER,                     ACTION_HITTING, MV_BIT_RIGHT
6960   },
6961
6962   // helper (runtime) elements
6963
6964   {
6965     O_FAKE_BONUS,                               FALSE,
6966     EL_BD_FAKE_BONUS,                           -1, -1
6967   },
6968   {
6969     O_INBOX_CLOSED,                             FALSE,
6970     EL_BD_INBOX,                                -1, -1
6971   },
6972   {
6973     O_INBOX_OPEN,                               FALSE,
6974     EL_BD_INBOX,                                ACTION_OPENING, -1
6975   },
6976   {
6977     O_OUTBOX_CLOSED,                            FALSE,
6978     EL_BD_EXIT_CLOSED,                          -1, -1
6979   },
6980   {
6981     O_OUTBOX_OPEN,                              FALSE,
6982     EL_BD_EXIT_OPEN,                            -1, -1
6983   },
6984   {
6985     O_COVERED,                                  FALSE,
6986     EL_BD_COVERED,                              -1, -1
6987   },
6988   {
6989     O_PLAYER_LEFT,                              FALSE,
6990     EL_BD_PLAYER,                               ACTION_MOVING, MV_BIT_LEFT
6991   },
6992   {
6993     O_PLAYER_RIGHT,                             FALSE,
6994     EL_BD_PLAYER,                               ACTION_MOVING, MV_BIT_RIGHT
6995   },
6996   {
6997     O_PLAYER_BLINK,                             FALSE,
6998     EL_BD_PLAYER,                               ACTION_BORING_1, -1
6999   },
7000   {
7001     O_PLAYER_TAP,                               FALSE,
7002     EL_BD_PLAYER,                               ACTION_BORING_2, -1
7003   },
7004   {
7005     O_PLAYER_TAP_BLINK,                         FALSE,
7006     EL_BD_PLAYER,                               ACTION_BORING_3, -1
7007   },
7008   {
7009     O_CREATURE_SWITCH_ON,                       FALSE,
7010     EL_BD_CREATURE_SWITCH_ACTIVE,               -1, -1
7011   },
7012   {
7013     O_EXPANDING_WALL_SWITCH_HORIZ,              FALSE,
7014     EL_BD_EXPANDABLE_WALL_SWITCH_HORIZONTAL,    -1, -1
7015   },
7016   {
7017     O_EXPANDING_WALL_SWITCH_VERT,               FALSE,
7018     EL_BD_EXPANDABLE_WALL_SWITCH_VERTICAL,      -1, -1
7019   },
7020   {
7021     O_GRAVITY_SWITCH_ACTIVE,                    FALSE,
7022     EL_BD_GRAVITY_SWITCH_ACTIVE,                -1, -1
7023   },
7024   {
7025     O_REPLICATOR_SWITCH_OFF,                    FALSE,
7026     EL_BD_REPLICATOR_SWITCH,                    -1, -1
7027   },
7028   {
7029     O_REPLICATOR_SWITCH_ON,                     FALSE,
7030     EL_BD_REPLICATOR_SWITCH_ACTIVE,             -1, -1
7031   },
7032   {
7033     O_CONVEYOR_DIR_NORMAL,                      FALSE,
7034     EL_BD_CONVEYOR_DIR_SWITCH_RIGHT,            -1, -1
7035   },
7036   {
7037     O_CONVEYOR_DIR_CHANGED,                     FALSE,
7038     EL_BD_CONVEYOR_DIR_SWITCH_LEFT,             -1, -1
7039   },
7040   {
7041     O_CONVEYOR_SWITCH_OFF,                      FALSE,
7042     EL_BD_CONVEYOR_SWITCH,                      -1, -1
7043   },
7044   {
7045     O_CONVEYOR_SWITCH_ON,                       FALSE,
7046     EL_BD_CONVEYOR_SWITCH_ACTIVE,               -1, -1
7047   },
7048   {
7049     O_MAGIC_WALL_ACTIVE,                        FALSE,
7050     EL_BD_MAGIC_WALL_ACTIVE,                    -1, -1
7051   },
7052   {
7053     O_REPLICATOR_ACTIVE,                        FALSE,
7054     EL_BD_REPLICATOR_ACTIVE,                    -1, -1
7055   },
7056   {
7057     O_CONVEYOR_LEFT_ACTIVE,                     FALSE,
7058     EL_BD_CONVEYOR_LEFT_ACTIVE,                 -1, -1
7059   },
7060   {
7061     O_CONVEYOR_RIGHT_ACTIVE,                    FALSE,
7062     EL_BD_CONVEYOR_RIGHT_ACTIVE,                -1, -1
7063   },
7064   {
7065     O_BITER_SWITCH_1,                           FALSE,
7066     EL_BD_BITER_SWITCH_1,                       -1, -1
7067   },
7068   {
7069     O_BITER_SWITCH_2,                           FALSE,
7070     EL_BD_BITER_SWITCH_2,                       -1, -1
7071   },
7072   {
7073     O_BITER_SWITCH_3,                           FALSE,
7074     EL_BD_BITER_SWITCH_3,                       -1, -1
7075   },
7076   {
7077     O_BITER_SWITCH_4,                           FALSE,
7078     EL_BD_BITER_SWITCH_4,                       -1, -1
7079   },
7080
7081   {
7082     -1,                                         FALSE,
7083     -1,                                         -1, -1
7084   }
7085 };
7086
7087 int map_element_RND_to_BD(int element_rnd)
7088 {
7089   static unsigned short mapping_RND_to_BD[NUM_FILE_ELEMENTS];
7090   static boolean mapping_initialized = FALSE;
7091
7092   if (!mapping_initialized)
7093   {
7094     int i;
7095
7096     // return "O_UNKNOWN" for all undefined elements in mapping array
7097     for (i = 0; i < NUM_FILE_ELEMENTS; i++)
7098       mapping_RND_to_BD[i] = O_UNKNOWN;
7099
7100     for (i = 0; bd_object_mapping_list[i].element_bd != -1; i++)
7101       if (bd_object_mapping_list[i].is_rnd_to_bd_mapping)
7102         mapping_RND_to_BD[bd_object_mapping_list[i].element_rnd] =
7103           bd_object_mapping_list[i].element_bd;
7104
7105     mapping_initialized = TRUE;
7106   }
7107
7108   if (element_rnd < 0 || element_rnd >= NUM_FILE_ELEMENTS)
7109   {
7110     Warn("invalid RND element %d", element_rnd);
7111
7112     return O_UNKNOWN;
7113   }
7114
7115   return mapping_RND_to_BD[element_rnd];
7116 }
7117
7118 int map_element_BD_to_RND(int element_bd)
7119 {
7120   static unsigned short mapping_BD_to_RND[O_MAX_ALL];
7121   static boolean mapping_initialized = FALSE;
7122
7123   if (!mapping_initialized)
7124   {
7125     int i;
7126
7127     // return "EL_UNKNOWN" for all undefined elements in mapping array
7128     for (i = 0; i < O_MAX_ALL; i++)
7129       mapping_BD_to_RND[i] = EL_UNKNOWN;
7130
7131     for (i = 0; bd_object_mapping_list[i].element_bd != -1; i++)
7132       mapping_BD_to_RND[bd_object_mapping_list[i].element_bd] =
7133         bd_object_mapping_list[i].element_rnd;
7134
7135     mapping_initialized = TRUE;
7136   }
7137
7138   if (element_bd < 0 || element_bd >= O_MAX_ALL)
7139   {
7140     Warn("invalid BD element %d", element_bd);
7141
7142     return EL_UNKNOWN;
7143   }
7144
7145   return mapping_BD_to_RND[element_bd];
7146 }
7147
7148 static struct Mapping_EM_to_RND_object
7149 {
7150   int element_em;
7151   boolean is_rnd_to_em_mapping;         // unique mapping EM <-> RND
7152   boolean is_backside;                  // backside of moving element
7153
7154   int element_rnd;
7155   int action;
7156   int direction;
7157 }
7158 em_object_mapping_list[GAME_TILE_MAX + 1] =
7159 {
7160   {
7161     Zborder,                            FALSE,  FALSE,
7162     EL_EMPTY,                           -1, -1
7163   },
7164   {
7165     Zplayer,                            FALSE,  FALSE,
7166     EL_EMPTY,                           -1, -1
7167   },
7168
7169   {
7170     Zbug,                               FALSE,  FALSE,
7171     EL_EMPTY,                           -1, -1
7172   },
7173   {
7174     Ztank,                              FALSE,  FALSE,
7175     EL_EMPTY,                           -1, -1
7176   },
7177   {
7178     Zeater,                             FALSE,  FALSE,
7179     EL_EMPTY,                           -1, -1
7180   },
7181   {
7182     Zdynamite,                          FALSE,  FALSE,
7183     EL_EMPTY,                           -1, -1
7184   },
7185   {
7186     Zboom,                              FALSE,  FALSE,
7187     EL_EMPTY,                           -1, -1
7188   },
7189
7190   {
7191     Xchain,                             FALSE,  FALSE,
7192     EL_DEFAULT,                         ACTION_EXPLODING, -1
7193   },
7194   {
7195     Xboom_bug,                          FALSE,  FALSE,
7196     EL_BUG,                             ACTION_EXPLODING, -1
7197   },
7198   {
7199     Xboom_tank,                         FALSE,  FALSE,
7200     EL_SPACESHIP,                       ACTION_EXPLODING, -1
7201   },
7202   {
7203     Xboom_android,                      FALSE,  FALSE,
7204     EL_EMC_ANDROID,                     ACTION_OTHER, -1
7205   },
7206   {
7207     Xboom_1,                            FALSE,  FALSE,
7208     EL_DEFAULT,                         ACTION_EXPLODING, -1
7209   },
7210   {
7211     Xboom_2,                            FALSE,  FALSE,
7212     EL_DEFAULT,                         ACTION_EXPLODING, -1
7213   },
7214
7215   {
7216     Xblank,                             TRUE,   FALSE,
7217     EL_EMPTY,                           -1, -1
7218   },
7219
7220   {
7221     Xsplash_e,                          FALSE,  FALSE,
7222     EL_ACID_SPLASH_RIGHT,               -1, -1
7223   },
7224   {
7225     Xsplash_w,                          FALSE,  FALSE,
7226     EL_ACID_SPLASH_LEFT,                -1, -1
7227   },
7228
7229   {
7230     Xplant,                             TRUE,   FALSE,
7231     EL_EMC_PLANT,                       -1, -1
7232   },
7233   {
7234     Yplant,                             FALSE,  FALSE,
7235     EL_EMC_PLANT,                       -1, -1
7236   },
7237
7238   {
7239     Xacid_1,                            TRUE,   FALSE,
7240     EL_ACID,                            -1, -1
7241   },
7242   {
7243     Xacid_2,                            FALSE,  FALSE,
7244     EL_ACID,                            -1, -1
7245   },
7246   {
7247     Xacid_3,                            FALSE,  FALSE,
7248     EL_ACID,                            -1, -1
7249   },
7250   {
7251     Xacid_4,                            FALSE,  FALSE,
7252     EL_ACID,                            -1, -1
7253   },
7254   {
7255     Xacid_5,                            FALSE,  FALSE,
7256     EL_ACID,                            -1, -1
7257   },
7258   {
7259     Xacid_6,                            FALSE,  FALSE,
7260     EL_ACID,                            -1, -1
7261   },
7262   {
7263     Xacid_7,                            FALSE,  FALSE,
7264     EL_ACID,                            -1, -1
7265   },
7266   {
7267     Xacid_8,                            FALSE,  FALSE,
7268     EL_ACID,                            -1, -1
7269   },
7270
7271   {
7272     Xfake_acid_1,                       TRUE,   FALSE,
7273     EL_EMC_FAKE_ACID,                   -1, -1
7274   },
7275   {
7276     Xfake_acid_2,                       FALSE,  FALSE,
7277     EL_EMC_FAKE_ACID,                   -1, -1
7278   },
7279   {
7280     Xfake_acid_3,                       FALSE,  FALSE,
7281     EL_EMC_FAKE_ACID,                   -1, -1
7282   },
7283   {
7284     Xfake_acid_4,                       FALSE,  FALSE,
7285     EL_EMC_FAKE_ACID,                   -1, -1
7286   },
7287   {
7288     Xfake_acid_5,                       FALSE,  FALSE,
7289     EL_EMC_FAKE_ACID,                   -1, -1
7290   },
7291   {
7292     Xfake_acid_6,                       FALSE,  FALSE,
7293     EL_EMC_FAKE_ACID,                   -1, -1
7294   },
7295   {
7296     Xfake_acid_7,                       FALSE,  FALSE,
7297     EL_EMC_FAKE_ACID,                   -1, -1
7298   },
7299   {
7300     Xfake_acid_8,                       FALSE,  FALSE,
7301     EL_EMC_FAKE_ACID,                   -1, -1
7302   },
7303
7304   {
7305     Xfake_acid_1_player,                FALSE,  FALSE,
7306     EL_EMC_FAKE_ACID,                   -1, -1
7307   },
7308   {
7309     Xfake_acid_2_player,                FALSE,  FALSE,
7310     EL_EMC_FAKE_ACID,                   -1, -1
7311   },
7312   {
7313     Xfake_acid_3_player,                FALSE,  FALSE,
7314     EL_EMC_FAKE_ACID,                   -1, -1
7315   },
7316   {
7317     Xfake_acid_4_player,                FALSE,  FALSE,
7318     EL_EMC_FAKE_ACID,                   -1, -1
7319   },
7320   {
7321     Xfake_acid_5_player,                FALSE,  FALSE,
7322     EL_EMC_FAKE_ACID,                   -1, -1
7323   },
7324   {
7325     Xfake_acid_6_player,                FALSE,  FALSE,
7326     EL_EMC_FAKE_ACID,                   -1, -1
7327   },
7328   {
7329     Xfake_acid_7_player,                FALSE,  FALSE,
7330     EL_EMC_FAKE_ACID,                   -1, -1
7331   },
7332   {
7333     Xfake_acid_8_player,                FALSE,  FALSE,
7334     EL_EMC_FAKE_ACID,                   -1, -1
7335   },
7336
7337   {
7338     Xgrass,                             TRUE,   FALSE,
7339     EL_EMC_GRASS,                       -1, -1
7340   },
7341   {
7342     Ygrass_nB,                          FALSE,  FALSE,
7343     EL_EMC_GRASS,                       ACTION_DIGGING, MV_BIT_UP
7344   },
7345   {
7346     Ygrass_eB,                          FALSE,  FALSE,
7347     EL_EMC_GRASS,                       ACTION_DIGGING, MV_BIT_RIGHT
7348   },
7349   {
7350     Ygrass_sB,                          FALSE,  FALSE,
7351     EL_EMC_GRASS,                       ACTION_DIGGING, MV_BIT_DOWN
7352   },
7353   {
7354     Ygrass_wB,                          FALSE,  FALSE,
7355     EL_EMC_GRASS,                       ACTION_DIGGING, MV_BIT_LEFT
7356   },
7357
7358   {
7359     Xdirt,                              TRUE,   FALSE,
7360     EL_SAND,                            -1, -1
7361   },
7362   {
7363     Ydirt_nB,                           FALSE,  FALSE,
7364     EL_SAND,                            ACTION_DIGGING, MV_BIT_UP
7365   },
7366   {
7367     Ydirt_eB,                           FALSE,  FALSE,
7368     EL_SAND,                            ACTION_DIGGING, MV_BIT_RIGHT
7369   },
7370   {
7371     Ydirt_sB,                           FALSE,  FALSE,
7372     EL_SAND,                            ACTION_DIGGING, MV_BIT_DOWN
7373   },
7374   {
7375     Ydirt_wB,                           FALSE,  FALSE,
7376     EL_SAND,                            ACTION_DIGGING, MV_BIT_LEFT
7377   },
7378
7379   {
7380     Xandroid,                           TRUE,   FALSE,
7381     EL_EMC_ANDROID,                     ACTION_ACTIVE, -1
7382   },
7383   {
7384     Xandroid_1_n,                       FALSE,  FALSE,
7385     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_UP
7386   },
7387   {
7388     Xandroid_2_n,                       FALSE,  FALSE,
7389     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_UP
7390   },
7391   {
7392     Xandroid_1_e,                       FALSE,  FALSE,
7393     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_RIGHT
7394   },
7395   {
7396     Xandroid_2_e,                       FALSE,  FALSE,
7397     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_RIGHT
7398   },
7399   {
7400     Xandroid_1_w,                       FALSE,  FALSE,
7401     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_LEFT
7402   },
7403   {
7404     Xandroid_2_w,                       FALSE,  FALSE,
7405     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_LEFT
7406   },
7407   {
7408     Xandroid_1_s,                       FALSE,  FALSE,
7409     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_DOWN
7410   },
7411   {
7412     Xandroid_2_s,                       FALSE,  FALSE,
7413     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_DOWN
7414   },
7415   {
7416     Yandroid_n,                         FALSE,  FALSE,
7417     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_UP
7418   },
7419   {
7420     Yandroid_nB,                        FALSE,  TRUE,
7421     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_UP
7422   },
7423   {
7424     Yandroid_ne,                        FALSE,  FALSE,
7425     EL_EMC_ANDROID,                     ACTION_GROWING, MV_BIT_UPRIGHT
7426   },
7427   {
7428     Yandroid_neB,                       FALSE,  TRUE,
7429     EL_EMC_ANDROID,                     ACTION_SHRINKING, MV_BIT_UPRIGHT
7430   },
7431   {
7432     Yandroid_e,                         FALSE,  FALSE,
7433     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_RIGHT
7434   },
7435   {
7436     Yandroid_eB,                        FALSE,  TRUE,
7437     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_RIGHT
7438   },
7439   {
7440     Yandroid_se,                        FALSE,  FALSE,
7441     EL_EMC_ANDROID,                     ACTION_GROWING, MV_BIT_DOWNRIGHT
7442   },
7443   {
7444     Yandroid_seB,                       FALSE,  TRUE,
7445     EL_EMC_ANDROID,                     ACTION_SHRINKING, MV_BIT_DOWNRIGHT
7446   },
7447   {
7448     Yandroid_s,                         FALSE,  FALSE,
7449     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_DOWN
7450   },
7451   {
7452     Yandroid_sB,                        FALSE,  TRUE,
7453     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_DOWN
7454   },
7455   {
7456     Yandroid_sw,                        FALSE,  FALSE,
7457     EL_EMC_ANDROID,                     ACTION_GROWING, MV_BIT_DOWNLEFT
7458   },
7459   {
7460     Yandroid_swB,                       FALSE,  TRUE,
7461     EL_EMC_ANDROID,                     ACTION_SHRINKING, MV_BIT_DOWNLEFT
7462   },
7463   {
7464     Yandroid_w,                         FALSE,  FALSE,
7465     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_LEFT
7466   },
7467   {
7468     Yandroid_wB,                        FALSE,  TRUE,
7469     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_LEFT
7470   },
7471   {
7472     Yandroid_nw,                        FALSE,  FALSE,
7473     EL_EMC_ANDROID,                     ACTION_GROWING, MV_BIT_UPLEFT
7474   },
7475   {
7476     Yandroid_nwB,                       FALSE,  TRUE,
7477     EL_EMC_ANDROID,                     ACTION_SHRINKING, MV_BIT_UPLEFT
7478   },
7479
7480   {
7481     Xeater_n,                           TRUE,   FALSE,
7482     EL_YAMYAM_UP,                       -1, -1
7483   },
7484   {
7485     Xeater_e,                           TRUE,   FALSE,
7486     EL_YAMYAM_RIGHT,                    -1, -1
7487   },
7488   {
7489     Xeater_w,                           TRUE,   FALSE,
7490     EL_YAMYAM_LEFT,                     -1, -1
7491   },
7492   {
7493     Xeater_s,                           TRUE,   FALSE,
7494     EL_YAMYAM_DOWN,                     -1, -1
7495   },
7496   {
7497     Yeater_n,                           FALSE,  FALSE,
7498     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_UP
7499   },
7500   {
7501     Yeater_nB,                          FALSE,  TRUE,
7502     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_UP
7503   },
7504   {
7505     Yeater_e,                           FALSE,  FALSE,
7506     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_RIGHT
7507   },
7508   {
7509     Yeater_eB,                          FALSE,  TRUE,
7510     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_RIGHT
7511   },
7512   {
7513     Yeater_s,                           FALSE,  FALSE,
7514     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_DOWN
7515   },
7516   {
7517     Yeater_sB,                          FALSE,  TRUE,
7518     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_DOWN
7519   },
7520   {
7521     Yeater_w,                           FALSE,  FALSE,
7522     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_LEFT
7523   },
7524   {
7525     Yeater_wB,                          FALSE,  TRUE,
7526     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_LEFT
7527   },
7528   {
7529     Yeater_stone,                       FALSE,  FALSE,
7530     EL_YAMYAM,                          ACTION_SMASHED_BY_ROCK, -1
7531   },
7532   {
7533     Yeater_spring,                      FALSE,  FALSE,
7534     EL_YAMYAM,                          ACTION_SMASHED_BY_SPRING, -1
7535   },
7536
7537   {
7538     Xalien,                             TRUE,   FALSE,
7539     EL_ROBOT,                           -1, -1
7540   },
7541   {
7542     Xalien_pause,                       FALSE,  FALSE,
7543     EL_ROBOT,                           -1, -1
7544   },
7545   {
7546     Yalien_n,                           FALSE,  FALSE,
7547     EL_ROBOT,                           ACTION_MOVING, MV_BIT_UP
7548   },
7549   {
7550     Yalien_nB,                          FALSE,  TRUE,
7551     EL_ROBOT,                           ACTION_MOVING, MV_BIT_UP
7552   },
7553   {
7554     Yalien_e,                           FALSE,  FALSE,
7555     EL_ROBOT,                           ACTION_MOVING, MV_BIT_RIGHT
7556   },
7557   {
7558     Yalien_eB,                          FALSE,  TRUE,
7559     EL_ROBOT,                           ACTION_MOVING, MV_BIT_RIGHT
7560   },
7561   {
7562     Yalien_s,                           FALSE,  FALSE,
7563     EL_ROBOT,                           ACTION_MOVING, MV_BIT_DOWN
7564   },
7565   {
7566     Yalien_sB,                          FALSE,  TRUE,
7567     EL_ROBOT,                           ACTION_MOVING, MV_BIT_DOWN
7568   },
7569   {
7570     Yalien_w,                           FALSE,  FALSE,
7571     EL_ROBOT,                           ACTION_MOVING, MV_BIT_LEFT
7572   },
7573   {
7574     Yalien_wB,                          FALSE,  TRUE,
7575     EL_ROBOT,                           ACTION_MOVING, MV_BIT_LEFT
7576   },
7577   {
7578     Yalien_stone,                       FALSE,  FALSE,
7579     EL_ROBOT,                           ACTION_SMASHED_BY_ROCK, -1
7580   },
7581   {
7582     Yalien_spring,                      FALSE,  FALSE,
7583     EL_ROBOT,                           ACTION_SMASHED_BY_SPRING, -1
7584   },
7585
7586   {
7587     Xbug_1_n,                           TRUE,   FALSE,
7588     EL_BUG_UP,                          -1, -1
7589   },
7590   {
7591     Xbug_1_e,                           TRUE,   FALSE,
7592     EL_BUG_RIGHT,                       -1, -1
7593   },
7594   {
7595     Xbug_1_s,                           TRUE,   FALSE,
7596     EL_BUG_DOWN,                        -1, -1
7597   },
7598   {
7599     Xbug_1_w,                           TRUE,   FALSE,
7600     EL_BUG_LEFT,                        -1, -1
7601   },
7602   {
7603     Xbug_2_n,                           FALSE,  FALSE,
7604     EL_BUG_UP,                          -1, -1
7605   },
7606   {
7607     Xbug_2_e,                           FALSE,  FALSE,
7608     EL_BUG_RIGHT,                       -1, -1
7609   },
7610   {
7611     Xbug_2_s,                           FALSE,  FALSE,
7612     EL_BUG_DOWN,                        -1, -1
7613   },
7614   {
7615     Xbug_2_w,                           FALSE,  FALSE,
7616     EL_BUG_LEFT,                        -1, -1
7617   },
7618   {
7619     Ybug_n,                             FALSE,  FALSE,
7620     EL_BUG,                             ACTION_MOVING, MV_BIT_UP
7621   },
7622   {
7623     Ybug_nB,                            FALSE,  TRUE,
7624     EL_BUG,                             ACTION_MOVING, MV_BIT_UP
7625   },
7626   {
7627     Ybug_e,                             FALSE,  FALSE,
7628     EL_BUG,                             ACTION_MOVING, MV_BIT_RIGHT
7629   },
7630   {
7631     Ybug_eB,                            FALSE,  TRUE,
7632     EL_BUG,                             ACTION_MOVING, MV_BIT_RIGHT
7633   },
7634   {
7635     Ybug_s,                             FALSE,  FALSE,
7636     EL_BUG,                             ACTION_MOVING, MV_BIT_DOWN
7637   },
7638   {
7639     Ybug_sB,                            FALSE,  TRUE,
7640     EL_BUG,                             ACTION_MOVING, MV_BIT_DOWN
7641   },
7642   {
7643     Ybug_w,                             FALSE,  FALSE,
7644     EL_BUG,                             ACTION_MOVING, MV_BIT_LEFT
7645   },
7646   {
7647     Ybug_wB,                            FALSE,  TRUE,
7648     EL_BUG,                             ACTION_MOVING, MV_BIT_LEFT
7649   },
7650   {
7651     Ybug_w_n,                           FALSE,  FALSE,
7652     EL_BUG,                             ACTION_TURNING_FROM_LEFT, MV_BIT_UP
7653   },
7654   {
7655     Ybug_n_e,                           FALSE,  FALSE,
7656     EL_BUG,                             ACTION_TURNING_FROM_UP, MV_BIT_RIGHT
7657   },
7658   {
7659     Ybug_e_s,                           FALSE,  FALSE,
7660     EL_BUG,                             ACTION_TURNING_FROM_RIGHT, MV_BIT_DOWN
7661   },
7662   {
7663     Ybug_s_w,                           FALSE,  FALSE,
7664     EL_BUG,                             ACTION_TURNING_FROM_DOWN, MV_BIT_LEFT
7665   },
7666   {
7667     Ybug_e_n,                           FALSE,  FALSE,
7668     EL_BUG,                             ACTION_TURNING_FROM_RIGHT, MV_BIT_UP
7669   },
7670   {
7671     Ybug_s_e,                           FALSE,  FALSE,
7672     EL_BUG,                             ACTION_TURNING_FROM_DOWN, MV_BIT_RIGHT
7673   },
7674   {
7675     Ybug_w_s,                           FALSE,  FALSE,
7676     EL_BUG,                             ACTION_TURNING_FROM_LEFT, MV_BIT_DOWN
7677   },
7678   {
7679     Ybug_n_w,                           FALSE,  FALSE,
7680     EL_BUG,                             ACTION_TURNING_FROM_UP, MV_BIT_LEFT
7681   },
7682   {
7683     Ybug_stone,                         FALSE,  FALSE,
7684     EL_BUG,                             ACTION_SMASHED_BY_ROCK, -1
7685   },
7686   {
7687     Ybug_spring,                        FALSE,  FALSE,
7688     EL_BUG,                             ACTION_SMASHED_BY_SPRING, -1
7689   },
7690
7691   {
7692     Xtank_1_n,                          TRUE,   FALSE,
7693     EL_SPACESHIP_UP,                    -1, -1
7694   },
7695   {
7696     Xtank_1_e,                          TRUE,   FALSE,
7697     EL_SPACESHIP_RIGHT,                 -1, -1
7698   },
7699   {
7700     Xtank_1_s,                          TRUE,   FALSE,
7701     EL_SPACESHIP_DOWN,                  -1, -1
7702   },
7703   {
7704     Xtank_1_w,                          TRUE,   FALSE,
7705     EL_SPACESHIP_LEFT,                  -1, -1
7706   },
7707   {
7708     Xtank_2_n,                          FALSE,  FALSE,
7709     EL_SPACESHIP_UP,                    -1, -1
7710   },
7711   {
7712     Xtank_2_e,                          FALSE,  FALSE,
7713     EL_SPACESHIP_RIGHT,                 -1, -1
7714   },
7715   {
7716     Xtank_2_s,                          FALSE,  FALSE,
7717     EL_SPACESHIP_DOWN,                  -1, -1
7718   },
7719   {
7720     Xtank_2_w,                          FALSE,  FALSE,
7721     EL_SPACESHIP_LEFT,                  -1, -1
7722   },
7723   {
7724     Ytank_n,                            FALSE,  FALSE,
7725     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_UP
7726   },
7727   {
7728     Ytank_nB,                           FALSE,  TRUE,
7729     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_UP
7730   },
7731   {
7732     Ytank_e,                            FALSE,  FALSE,
7733     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_RIGHT
7734   },
7735   {
7736     Ytank_eB,                           FALSE,  TRUE,
7737     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_RIGHT
7738   },
7739   {
7740     Ytank_s,                            FALSE,  FALSE,
7741     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_DOWN
7742   },
7743   {
7744     Ytank_sB,                           FALSE,  TRUE,
7745     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_DOWN
7746   },
7747   {
7748     Ytank_w,                            FALSE,  FALSE,
7749     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_LEFT
7750   },
7751   {
7752     Ytank_wB,                           FALSE,  TRUE,
7753     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_LEFT
7754   },
7755   {
7756     Ytank_w_n,                          FALSE,  FALSE,
7757     EL_SPACESHIP,                       ACTION_TURNING_FROM_LEFT, MV_BIT_UP
7758   },
7759   {
7760     Ytank_n_e,                          FALSE,  FALSE,
7761     EL_SPACESHIP,                       ACTION_TURNING_FROM_UP, MV_BIT_RIGHT
7762   },
7763   {
7764     Ytank_e_s,                          FALSE,  FALSE,
7765     EL_SPACESHIP,                       ACTION_TURNING_FROM_RIGHT, MV_BIT_DOWN
7766   },
7767   {
7768     Ytank_s_w,                          FALSE,  FALSE,
7769     EL_SPACESHIP,                       ACTION_TURNING_FROM_DOWN, MV_BIT_LEFT
7770   },
7771   {
7772     Ytank_e_n,                          FALSE,  FALSE,
7773     EL_SPACESHIP,                       ACTION_TURNING_FROM_RIGHT, MV_BIT_UP
7774   },
7775   {
7776     Ytank_s_e,                          FALSE,  FALSE,
7777     EL_SPACESHIP,                       ACTION_TURNING_FROM_DOWN, MV_BIT_RIGHT
7778   },
7779   {
7780     Ytank_w_s,                          FALSE,  FALSE,
7781     EL_SPACESHIP,                       ACTION_TURNING_FROM_LEFT, MV_BIT_DOWN
7782   },
7783   {
7784     Ytank_n_w,                          FALSE,  FALSE,
7785     EL_SPACESHIP,                       ACTION_TURNING_FROM_UP, MV_BIT_LEFT
7786   },
7787   {
7788     Ytank_stone,                        FALSE,  FALSE,
7789     EL_SPACESHIP,                       ACTION_SMASHED_BY_ROCK, -1
7790   },
7791   {
7792     Ytank_spring,                       FALSE,  FALSE,
7793     EL_SPACESHIP,                       ACTION_SMASHED_BY_SPRING, -1
7794   },
7795
7796   {
7797     Xemerald,                           TRUE,   FALSE,
7798     EL_EMERALD,                         -1, -1
7799   },
7800   {
7801     Xemerald_pause,                     FALSE,  FALSE,
7802     EL_EMERALD,                         -1, -1
7803   },
7804   {
7805     Xemerald_fall,                      FALSE,  FALSE,
7806     EL_EMERALD,                         -1, -1
7807   },
7808   {
7809     Xemerald_shine,                     FALSE,  FALSE,
7810     EL_EMERALD,                         ACTION_TWINKLING, -1
7811   },
7812   {
7813     Yemerald_s,                         FALSE,  FALSE,
7814     EL_EMERALD,                         ACTION_FALLING, -1
7815   },
7816   {
7817     Yemerald_sB,                        FALSE,  TRUE,
7818     EL_EMERALD,                         ACTION_FALLING, -1
7819   },
7820   {
7821     Yemerald_e,                         FALSE,  FALSE,
7822     EL_EMERALD,                         ACTION_MOVING, MV_BIT_RIGHT
7823   },
7824   {
7825     Yemerald_eB,                        FALSE,  TRUE,
7826     EL_EMERALD,                         ACTION_MOVING, MV_BIT_RIGHT
7827   },
7828   {
7829     Yemerald_w,                         FALSE,  FALSE,
7830     EL_EMERALD,                         ACTION_MOVING, MV_BIT_LEFT
7831   },
7832   {
7833     Yemerald_wB,                        FALSE,  TRUE,
7834     EL_EMERALD,                         ACTION_MOVING, MV_BIT_LEFT
7835   },
7836   {
7837     Yemerald_blank,                     FALSE,  FALSE,
7838     EL_EMERALD,                         ACTION_COLLECTING, -1
7839   },
7840
7841   {
7842     Xdiamond,                           TRUE,   FALSE,
7843     EL_DIAMOND,                         -1, -1
7844   },
7845   {
7846     Xdiamond_pause,                     FALSE,  FALSE,
7847     EL_DIAMOND,                         -1, -1
7848   },
7849   {
7850     Xdiamond_fall,                      FALSE,  FALSE,
7851     EL_DIAMOND,                         -1, -1
7852   },
7853   {
7854     Xdiamond_shine,                     FALSE,  FALSE,
7855     EL_DIAMOND,                         ACTION_TWINKLING, -1
7856   },
7857   {
7858     Ydiamond_s,                         FALSE,  FALSE,
7859     EL_DIAMOND,                         ACTION_FALLING, -1
7860   },
7861   {
7862     Ydiamond_sB,                        FALSE,  TRUE,
7863     EL_DIAMOND,                         ACTION_FALLING, -1
7864   },
7865   {
7866     Ydiamond_e,                         FALSE,  FALSE,
7867     EL_DIAMOND,                         ACTION_MOVING, MV_BIT_RIGHT
7868   },
7869   {
7870     Ydiamond_eB,                        FALSE,  TRUE,
7871     EL_DIAMOND,                         ACTION_MOVING, MV_BIT_RIGHT
7872   },
7873   {
7874     Ydiamond_w,                         FALSE,  FALSE,
7875     EL_DIAMOND,                         ACTION_MOVING, MV_BIT_LEFT
7876   },
7877   {
7878     Ydiamond_wB,                        FALSE,  TRUE,
7879     EL_DIAMOND,                         ACTION_MOVING, MV_BIT_LEFT
7880   },
7881   {
7882     Ydiamond_blank,                     FALSE,  FALSE,
7883     EL_DIAMOND,                         ACTION_COLLECTING, -1
7884   },
7885   {
7886     Ydiamond_stone,                     FALSE,  FALSE,
7887     EL_DIAMOND,                         ACTION_SMASHED_BY_ROCK, -1
7888   },
7889
7890   {
7891     Xstone,                             TRUE,   FALSE,
7892     EL_ROCK,                            -1, -1
7893   },
7894   {
7895     Xstone_pause,                       FALSE,  FALSE,
7896     EL_ROCK,                            -1, -1
7897   },
7898   {
7899     Xstone_fall,                        FALSE,  FALSE,
7900     EL_ROCK,                            -1, -1
7901   },
7902   {
7903     Ystone_s,                           FALSE,  FALSE,
7904     EL_ROCK,                            ACTION_FALLING, -1
7905   },
7906   {
7907     Ystone_sB,                          FALSE,  TRUE,
7908     EL_ROCK,                            ACTION_FALLING, -1
7909   },
7910   {
7911     Ystone_e,                           FALSE,  FALSE,
7912     EL_ROCK,                            ACTION_MOVING, MV_BIT_RIGHT
7913   },
7914   {
7915     Ystone_eB,                          FALSE,  TRUE,
7916     EL_ROCK,                            ACTION_MOVING, MV_BIT_RIGHT
7917   },
7918   {
7919     Ystone_w,                           FALSE,  FALSE,
7920     EL_ROCK,                            ACTION_MOVING, MV_BIT_LEFT
7921   },
7922   {
7923     Ystone_wB,                          FALSE,  TRUE,
7924     EL_ROCK,                            ACTION_MOVING, MV_BIT_LEFT
7925   },
7926
7927   {
7928     Xbomb,                              TRUE,   FALSE,
7929     EL_BOMB,                            -1, -1
7930   },
7931   {
7932     Xbomb_pause,                        FALSE,  FALSE,
7933     EL_BOMB,                            -1, -1
7934   },
7935   {
7936     Xbomb_fall,                         FALSE,  FALSE,
7937     EL_BOMB,                            -1, -1
7938   },
7939   {
7940     Ybomb_s,                            FALSE,  FALSE,
7941     EL_BOMB,                            ACTION_FALLING, -1
7942   },
7943   {
7944     Ybomb_sB,                           FALSE,  TRUE,
7945     EL_BOMB,                            ACTION_FALLING, -1
7946   },
7947   {
7948     Ybomb_e,                            FALSE,  FALSE,
7949     EL_BOMB,                            ACTION_MOVING, MV_BIT_RIGHT
7950   },
7951   {
7952     Ybomb_eB,                           FALSE,  TRUE,
7953     EL_BOMB,                            ACTION_MOVING, MV_BIT_RIGHT
7954   },
7955   {
7956     Ybomb_w,                            FALSE,  FALSE,
7957     EL_BOMB,                            ACTION_MOVING, MV_BIT_LEFT
7958   },
7959   {
7960     Ybomb_wB,                           FALSE,  TRUE,
7961     EL_BOMB,                            ACTION_MOVING, MV_BIT_LEFT
7962   },
7963   {
7964     Ybomb_blank,                        FALSE,  FALSE,
7965     EL_BOMB,                            ACTION_ACTIVATING, -1
7966   },
7967
7968   {
7969     Xnut,                               TRUE,   FALSE,
7970     EL_NUT,                             -1, -1
7971   },
7972   {
7973     Xnut_pause,                         FALSE,  FALSE,
7974     EL_NUT,                             -1, -1
7975   },
7976   {
7977     Xnut_fall,                          FALSE,  FALSE,
7978     EL_NUT,                             -1, -1
7979   },
7980   {
7981     Ynut_s,                             FALSE,  FALSE,
7982     EL_NUT,                             ACTION_FALLING, -1
7983   },
7984   {
7985     Ynut_sB,                            FALSE,  TRUE,
7986     EL_NUT,                             ACTION_FALLING, -1
7987   },
7988   {
7989     Ynut_e,                             FALSE,  FALSE,
7990     EL_NUT,                             ACTION_MOVING, MV_BIT_RIGHT
7991   },
7992   {
7993     Ynut_eB,                            FALSE,  TRUE,
7994     EL_NUT,                             ACTION_MOVING, MV_BIT_RIGHT
7995   },
7996   {
7997     Ynut_w,                             FALSE,  FALSE,
7998     EL_NUT,                             ACTION_MOVING, MV_BIT_LEFT
7999   },
8000   {
8001     Ynut_wB,                            FALSE,  TRUE,
8002     EL_NUT,                             ACTION_MOVING, MV_BIT_LEFT
8003   },
8004   {
8005     Ynut_stone,                         FALSE,  FALSE,
8006     EL_NUT,                             ACTION_BREAKING, -1
8007   },
8008
8009   {
8010     Xspring,                            TRUE,   FALSE,
8011     EL_SPRING,                          -1, -1
8012   },
8013   {
8014     Xspring_pause,                      FALSE,  FALSE,
8015     EL_SPRING,                          -1, -1
8016   },
8017   {
8018     Xspring_e,                          TRUE,   FALSE,
8019     EL_SPRING_RIGHT,                    -1, -1
8020   },
8021   {
8022     Xspring_w,                          TRUE,   FALSE,
8023     EL_SPRING_LEFT,                     -1, -1
8024   },
8025   {
8026     Xspring_fall,                       FALSE,  FALSE,
8027     EL_SPRING,                          -1, -1
8028   },
8029   {
8030     Yspring_s,                          FALSE,  FALSE,
8031     EL_SPRING,                          ACTION_FALLING, -1
8032   },
8033   {
8034     Yspring_sB,                         FALSE,  TRUE,
8035     EL_SPRING,                          ACTION_FALLING, -1
8036   },
8037   {
8038     Yspring_e,                          FALSE,  FALSE,
8039     EL_SPRING,                          ACTION_MOVING, MV_BIT_RIGHT
8040   },
8041   {
8042     Yspring_eB,                         FALSE,  TRUE,
8043     EL_SPRING,                          ACTION_MOVING, MV_BIT_RIGHT
8044   },
8045   {
8046     Yspring_w,                          FALSE,  FALSE,
8047     EL_SPRING,                          ACTION_MOVING, MV_BIT_LEFT
8048   },
8049   {
8050     Yspring_wB,                         FALSE,  TRUE,
8051     EL_SPRING,                          ACTION_MOVING, MV_BIT_LEFT
8052   },
8053   {
8054     Yspring_alien_e,                    FALSE,  FALSE,
8055     EL_SPRING,                          ACTION_EATING, MV_BIT_RIGHT
8056   },
8057   {
8058     Yspring_alien_eB,                   FALSE,  TRUE,
8059     EL_SPRING,                          ACTION_EATING, MV_BIT_RIGHT
8060   },
8061   {
8062     Yspring_alien_w,                    FALSE,  FALSE,
8063     EL_SPRING,                          ACTION_EATING, MV_BIT_LEFT
8064   },
8065   {
8066     Yspring_alien_wB,                   FALSE,  TRUE,
8067     EL_SPRING,                          ACTION_EATING, MV_BIT_LEFT
8068   },
8069
8070   {
8071     Xpush_emerald_e,                    FALSE,  FALSE,
8072     EL_EMERALD,                         -1, MV_BIT_RIGHT
8073   },
8074   {
8075     Xpush_emerald_w,                    FALSE,  FALSE,
8076     EL_EMERALD,                         -1, MV_BIT_LEFT
8077   },
8078   {
8079     Xpush_diamond_e,                    FALSE,  FALSE,
8080     EL_DIAMOND,                         -1, MV_BIT_RIGHT
8081   },
8082   {
8083     Xpush_diamond_w,                    FALSE,  FALSE,
8084     EL_DIAMOND,                         -1, MV_BIT_LEFT
8085   },
8086   {
8087     Xpush_stone_e,                      FALSE,  FALSE,
8088     EL_ROCK,                            -1, MV_BIT_RIGHT
8089   },
8090   {
8091     Xpush_stone_w,                      FALSE,  FALSE,
8092     EL_ROCK,                            -1, MV_BIT_LEFT
8093   },
8094   {
8095     Xpush_bomb_e,                       FALSE,  FALSE,
8096     EL_BOMB,                            -1, MV_BIT_RIGHT
8097   },
8098   {
8099     Xpush_bomb_w,                       FALSE,  FALSE,
8100     EL_BOMB,                            -1, MV_BIT_LEFT
8101   },
8102   {
8103     Xpush_nut_e,                        FALSE,  FALSE,
8104     EL_NUT,                             -1, MV_BIT_RIGHT
8105   },
8106   {
8107     Xpush_nut_w,                        FALSE,  FALSE,
8108     EL_NUT,                             -1, MV_BIT_LEFT
8109   },
8110   {
8111     Xpush_spring_e,                     FALSE,  FALSE,
8112     EL_SPRING_RIGHT,                    -1, MV_BIT_RIGHT
8113   },
8114   {
8115     Xpush_spring_w,                     FALSE,  FALSE,
8116     EL_SPRING_LEFT,                     -1, MV_BIT_LEFT
8117   },
8118
8119   {
8120     Xdynamite,                          TRUE,   FALSE,
8121     EL_EM_DYNAMITE,                     -1, -1
8122   },
8123   {
8124     Ydynamite_blank,                    FALSE,  FALSE,
8125     EL_EM_DYNAMITE,                     ACTION_COLLECTING, -1
8126   },
8127   {
8128     Xdynamite_1,                        TRUE,   FALSE,
8129     EL_EM_DYNAMITE_ACTIVE,              -1, -1
8130   },
8131   {
8132     Xdynamite_2,                        FALSE,  FALSE,
8133     EL_EM_DYNAMITE_ACTIVE,              -1, -1
8134   },
8135   {
8136     Xdynamite_3,                        FALSE,  FALSE,
8137     EL_EM_DYNAMITE_ACTIVE,              -1, -1
8138   },
8139   {
8140     Xdynamite_4,                        FALSE,  FALSE,
8141     EL_EM_DYNAMITE_ACTIVE,              -1, -1
8142   },
8143
8144   {
8145     Xkey_1,                             TRUE,   FALSE,
8146     EL_EM_KEY_1,                        -1, -1
8147   },
8148   {
8149     Xkey_2,                             TRUE,   FALSE,
8150     EL_EM_KEY_2,                        -1, -1
8151   },
8152   {
8153     Xkey_3,                             TRUE,   FALSE,
8154     EL_EM_KEY_3,                        -1, -1
8155   },
8156   {
8157     Xkey_4,                             TRUE,   FALSE,
8158     EL_EM_KEY_4,                        -1, -1
8159   },
8160   {
8161     Xkey_5,                             TRUE,   FALSE,
8162     EL_EMC_KEY_5,                       -1, -1
8163   },
8164   {
8165     Xkey_6,                             TRUE,   FALSE,
8166     EL_EMC_KEY_6,                       -1, -1
8167   },
8168   {
8169     Xkey_7,                             TRUE,   FALSE,
8170     EL_EMC_KEY_7,                       -1, -1
8171   },
8172   {
8173     Xkey_8,                             TRUE,   FALSE,
8174     EL_EMC_KEY_8,                       -1, -1
8175   },
8176
8177   {
8178     Xdoor_1,                            TRUE,   FALSE,
8179     EL_EM_GATE_1,                       -1, -1
8180   },
8181   {
8182     Xdoor_2,                            TRUE,   FALSE,
8183     EL_EM_GATE_2,                       -1, -1
8184   },
8185   {
8186     Xdoor_3,                            TRUE,   FALSE,
8187     EL_EM_GATE_3,                       -1, -1
8188   },
8189   {
8190     Xdoor_4,                            TRUE,   FALSE,
8191     EL_EM_GATE_4,                       -1, -1
8192   },
8193   {
8194     Xdoor_5,                            TRUE,   FALSE,
8195     EL_EMC_GATE_5,                      -1, -1
8196   },
8197   {
8198     Xdoor_6,                            TRUE,   FALSE,
8199     EL_EMC_GATE_6,                      -1, -1
8200   },
8201   {
8202     Xdoor_7,                            TRUE,   FALSE,
8203     EL_EMC_GATE_7,                      -1, -1
8204   },
8205   {
8206     Xdoor_8,                            TRUE,   FALSE,
8207     EL_EMC_GATE_8,                      -1, -1
8208   },
8209
8210   {
8211     Xfake_door_1,                       TRUE,   FALSE,
8212     EL_EM_GATE_1_GRAY,                  -1, -1
8213   },
8214   {
8215     Xfake_door_2,                       TRUE,   FALSE,
8216     EL_EM_GATE_2_GRAY,                  -1, -1
8217   },
8218   {
8219     Xfake_door_3,                       TRUE,   FALSE,
8220     EL_EM_GATE_3_GRAY,                  -1, -1
8221   },
8222   {
8223     Xfake_door_4,                       TRUE,   FALSE,
8224     EL_EM_GATE_4_GRAY,                  -1, -1
8225   },
8226   {
8227     Xfake_door_5,                       TRUE,   FALSE,
8228     EL_EMC_GATE_5_GRAY,                 -1, -1
8229   },
8230   {
8231     Xfake_door_6,                       TRUE,   FALSE,
8232     EL_EMC_GATE_6_GRAY,                 -1, -1
8233   },
8234   {
8235     Xfake_door_7,                       TRUE,   FALSE,
8236     EL_EMC_GATE_7_GRAY,                 -1, -1
8237   },
8238   {
8239     Xfake_door_8,                       TRUE,   FALSE,
8240     EL_EMC_GATE_8_GRAY,                 -1, -1
8241   },
8242
8243   {
8244     Xballoon,                           TRUE,   FALSE,
8245     EL_BALLOON,                         -1, -1
8246   },
8247   {
8248     Yballoon_n,                         FALSE,  FALSE,
8249     EL_BALLOON,                         ACTION_MOVING, MV_BIT_UP
8250   },
8251   {
8252     Yballoon_nB,                        FALSE,  TRUE,
8253     EL_BALLOON,                         ACTION_MOVING, MV_BIT_UP
8254   },
8255   {
8256     Yballoon_e,                         FALSE,  FALSE,
8257     EL_BALLOON,                         ACTION_MOVING, MV_BIT_RIGHT
8258   },
8259   {
8260     Yballoon_eB,                        FALSE,  TRUE,
8261     EL_BALLOON,                         ACTION_MOVING, MV_BIT_RIGHT
8262   },
8263   {
8264     Yballoon_s,                         FALSE,  FALSE,
8265     EL_BALLOON,                         ACTION_MOVING, MV_BIT_DOWN
8266   },
8267   {
8268     Yballoon_sB,                        FALSE,  TRUE,
8269     EL_BALLOON,                         ACTION_MOVING, MV_BIT_DOWN
8270   },
8271   {
8272     Yballoon_w,                         FALSE,  FALSE,
8273     EL_BALLOON,                         ACTION_MOVING, MV_BIT_LEFT
8274   },
8275   {
8276     Yballoon_wB,                        FALSE,  TRUE,
8277     EL_BALLOON,                         ACTION_MOVING, MV_BIT_LEFT
8278   },
8279
8280   {
8281     Xball_1,                            TRUE,   FALSE,
8282     EL_EMC_MAGIC_BALL,                  -1, -1
8283   },
8284   {
8285     Yball_1,                            FALSE,  FALSE,
8286     EL_EMC_MAGIC_BALL,                  ACTION_ACTIVE, -1
8287   },
8288   {
8289     Xball_2,                            FALSE,  FALSE,
8290     EL_EMC_MAGIC_BALL,                  ACTION_ACTIVE, -1
8291   },
8292   {
8293     Yball_2,                            FALSE,  FALSE,
8294     EL_EMC_MAGIC_BALL,                  ACTION_ACTIVE, -1
8295   },
8296   {
8297     Yball_blank,                        FALSE,  FALSE,
8298     EL_EMC_MAGIC_BALL,                  ACTION_DROPPING, -1
8299   },
8300
8301   {
8302     Xamoeba_1,                          TRUE,   FALSE,
8303     EL_AMOEBA_DRY,                      ACTION_OTHER, -1
8304   },
8305   {
8306     Xamoeba_2,                          FALSE,  FALSE,
8307     EL_AMOEBA_DRY,                      ACTION_OTHER, -1
8308   },
8309   {
8310     Xamoeba_3,                          FALSE,  FALSE,
8311     EL_AMOEBA_DRY,                      ACTION_OTHER, -1
8312   },
8313   {
8314     Xamoeba_4,                          FALSE,  FALSE,
8315     EL_AMOEBA_DRY,                      ACTION_OTHER, -1
8316   },
8317   {
8318     Xamoeba_5,                          TRUE,   FALSE,
8319     EL_AMOEBA_WET,                      ACTION_OTHER, -1
8320   },
8321   {
8322     Xamoeba_6,                          FALSE,  FALSE,
8323     EL_AMOEBA_WET,                      ACTION_OTHER, -1
8324   },
8325   {
8326     Xamoeba_7,                          FALSE,  FALSE,
8327     EL_AMOEBA_WET,                      ACTION_OTHER, -1
8328   },
8329   {
8330     Xamoeba_8,                          FALSE,  FALSE,
8331     EL_AMOEBA_WET,                      ACTION_OTHER, -1
8332   },
8333
8334   {
8335     Xdrip,                              TRUE,   FALSE,
8336     EL_AMOEBA_DROP,                     ACTION_GROWING, -1
8337   },
8338   {
8339     Xdrip_fall,                         FALSE,  FALSE,
8340     EL_AMOEBA_DROP,                     -1, -1
8341   },
8342   {
8343     Xdrip_stretch,                      FALSE,  FALSE,
8344     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
8345   },
8346   {
8347     Xdrip_stretchB,                     FALSE,  TRUE,
8348     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
8349   },
8350   {
8351     Ydrip_1_s,                          FALSE,  FALSE,
8352     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
8353   },
8354   {
8355     Ydrip_1_sB,                         FALSE,  TRUE,
8356     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
8357   },
8358   {
8359     Ydrip_2_s,                          FALSE,  FALSE,
8360     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
8361   },
8362   {
8363     Ydrip_2_sB,                         FALSE,  TRUE,
8364     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
8365   },
8366
8367   {
8368     Xwonderwall,                        TRUE,   FALSE,
8369     EL_MAGIC_WALL,                      -1, -1
8370   },
8371   {
8372     Ywonderwall,                        FALSE,  FALSE,
8373     EL_MAGIC_WALL,                      ACTION_ACTIVE, -1
8374   },
8375
8376   {
8377     Xwheel,                             TRUE,   FALSE,
8378     EL_ROBOT_WHEEL,                     -1, -1
8379   },
8380   {
8381     Ywheel,                             FALSE,  FALSE,
8382     EL_ROBOT_WHEEL,                     ACTION_ACTIVE, -1
8383   },
8384
8385   {
8386     Xswitch,                            TRUE,   FALSE,
8387     EL_EMC_MAGIC_BALL_SWITCH,           -1, -1
8388   },
8389   {
8390     Yswitch,                            FALSE,  FALSE,
8391     EL_EMC_MAGIC_BALL_SWITCH,           ACTION_ACTIVE, -1
8392   },
8393
8394   {
8395     Xbumper,                            TRUE,   FALSE,
8396     EL_EMC_SPRING_BUMPER,               -1, -1
8397   },
8398   {
8399     Ybumper,                            FALSE,  FALSE,
8400     EL_EMC_SPRING_BUMPER,               ACTION_ACTIVE, -1
8401   },
8402
8403   {
8404     Xacid_nw,                           TRUE,   FALSE,
8405     EL_ACID_POOL_TOPLEFT,               -1, -1
8406   },
8407   {
8408     Xacid_ne,                           TRUE,   FALSE,
8409     EL_ACID_POOL_TOPRIGHT,              -1, -1
8410   },
8411   {
8412     Xacid_sw,                           TRUE,   FALSE,
8413     EL_ACID_POOL_BOTTOMLEFT,            -1, -1
8414   },
8415   {
8416     Xacid_s,                            TRUE,   FALSE,
8417     EL_ACID_POOL_BOTTOM,                -1, -1
8418   },
8419   {
8420     Xacid_se,                           TRUE,   FALSE,
8421     EL_ACID_POOL_BOTTOMRIGHT,           -1, -1
8422   },
8423
8424   {
8425     Xfake_blank,                        TRUE,   FALSE,
8426     EL_INVISIBLE_WALL,                  -1, -1
8427   },
8428   {
8429     Yfake_blank,                        FALSE,  FALSE,
8430     EL_INVISIBLE_WALL,                  ACTION_ACTIVE, -1
8431   },
8432
8433   {
8434     Xfake_grass,                        TRUE,   FALSE,
8435     EL_EMC_FAKE_GRASS,                  -1, -1
8436   },
8437   {
8438     Yfake_grass,                        FALSE,  FALSE,
8439     EL_EMC_FAKE_GRASS,                  ACTION_ACTIVE, -1
8440   },
8441
8442   {
8443     Xfake_amoeba,                       TRUE,   FALSE,
8444     EL_EMC_DRIPPER,                     -1, -1
8445   },
8446   {
8447     Yfake_amoeba,                       FALSE,  FALSE,
8448     EL_EMC_DRIPPER,                     ACTION_ACTIVE, -1
8449   },
8450
8451   {
8452     Xlenses,                            TRUE,   FALSE,
8453     EL_EMC_LENSES,                      -1, -1
8454   },
8455
8456   {
8457     Xmagnify,                           TRUE,   FALSE,
8458     EL_EMC_MAGNIFIER,                   -1, -1
8459   },
8460
8461   {
8462     Xsand,                              TRUE,   FALSE,
8463     EL_QUICKSAND_EMPTY,                 -1, -1
8464   },
8465   {
8466     Xsand_stone,                        TRUE,   FALSE,
8467     EL_QUICKSAND_FULL,                  -1, -1
8468   },
8469   {
8470     Xsand_stonein_1,                    FALSE,  TRUE,
8471     EL_ROCK,                            ACTION_FILLING, -1
8472   },
8473   {
8474     Xsand_stonein_2,                    FALSE,  TRUE,
8475     EL_ROCK,                            ACTION_FILLING, -1
8476   },
8477   {
8478     Xsand_stonein_3,                    FALSE,  TRUE,
8479     EL_ROCK,                            ACTION_FILLING, -1
8480   },
8481   {
8482     Xsand_stonein_4,                    FALSE,  TRUE,
8483     EL_ROCK,                            ACTION_FILLING, -1
8484   },
8485   {
8486     Xsand_sandstone_1,                  FALSE,  FALSE,
8487     EL_QUICKSAND_FILLING,               -1, -1
8488   },
8489   {
8490     Xsand_sandstone_2,                  FALSE,  FALSE,
8491     EL_QUICKSAND_FILLING,               -1, -1
8492   },
8493   {
8494     Xsand_sandstone_3,                  FALSE,  FALSE,
8495     EL_QUICKSAND_FILLING,               -1, -1
8496   },
8497   {
8498     Xsand_sandstone_4,                  FALSE,  FALSE,
8499     EL_QUICKSAND_FILLING,               -1, -1
8500   },
8501   {
8502     Xsand_stonesand_1,                  FALSE,  FALSE,
8503     EL_QUICKSAND_EMPTYING,              -1, -1
8504   },
8505   {
8506     Xsand_stonesand_2,                  FALSE,  FALSE,
8507     EL_QUICKSAND_EMPTYING,              -1, -1
8508   },
8509   {
8510     Xsand_stonesand_3,                  FALSE,  FALSE,
8511     EL_QUICKSAND_EMPTYING,              -1, -1
8512   },
8513   {
8514     Xsand_stonesand_4,                  FALSE,  FALSE,
8515     EL_QUICKSAND_EMPTYING,              -1, -1
8516   },
8517   {
8518     Xsand_stoneout_1,                   FALSE,  FALSE,
8519     EL_ROCK,                            ACTION_EMPTYING, -1
8520   },
8521   {
8522     Xsand_stoneout_2,                   FALSE,  FALSE,
8523     EL_ROCK,                            ACTION_EMPTYING, -1
8524   },
8525   {
8526     Xsand_stonesand_quickout_1,         FALSE,  FALSE,
8527     EL_QUICKSAND_EMPTYING,              -1, -1
8528   },
8529   {
8530     Xsand_stonesand_quickout_2,         FALSE,  FALSE,
8531     EL_QUICKSAND_EMPTYING,              -1, -1
8532   },
8533
8534   {
8535     Xslide_ns,                          TRUE,   FALSE,
8536     EL_EXPANDABLE_WALL_VERTICAL,        -1, -1
8537   },
8538   {
8539     Yslide_ns_blank,                    FALSE,  FALSE,
8540     EL_EXPANDABLE_WALL_VERTICAL,        ACTION_GROWING, -1
8541   },
8542   {
8543     Xslide_ew,                          TRUE,   FALSE,
8544     EL_EXPANDABLE_WALL_HORIZONTAL,      -1, -1
8545   },
8546   {
8547     Yslide_ew_blank,                    FALSE,  FALSE,
8548     EL_EXPANDABLE_WALL_HORIZONTAL,      ACTION_GROWING, -1
8549   },
8550
8551   {
8552     Xwind_n,                            TRUE,   FALSE,
8553     EL_BALLOON_SWITCH_UP,               -1, -1
8554   },
8555   {
8556     Xwind_e,                            TRUE,   FALSE,
8557     EL_BALLOON_SWITCH_RIGHT,            -1, -1
8558   },
8559   {
8560     Xwind_s,                            TRUE,   FALSE,
8561     EL_BALLOON_SWITCH_DOWN,             -1, -1
8562   },
8563   {
8564     Xwind_w,                            TRUE,   FALSE,
8565     EL_BALLOON_SWITCH_LEFT,             -1, -1
8566   },
8567   {
8568     Xwind_any,                          TRUE,   FALSE,
8569     EL_BALLOON_SWITCH_ANY,              -1, -1
8570   },
8571   {
8572     Xwind_stop,                         TRUE,   FALSE,
8573     EL_BALLOON_SWITCH_NONE,             -1, -1
8574   },
8575
8576   {
8577     Xexit,                              TRUE,   FALSE,
8578     EL_EM_EXIT_CLOSED,                  -1, -1
8579   },
8580   {
8581     Xexit_1,                            TRUE,   FALSE,
8582     EL_EM_EXIT_OPEN,                    -1, -1
8583   },
8584   {
8585     Xexit_2,                            FALSE,  FALSE,
8586     EL_EM_EXIT_OPEN,                    -1, -1
8587   },
8588   {
8589     Xexit_3,                            FALSE,  FALSE,
8590     EL_EM_EXIT_OPEN,                    -1, -1
8591   },
8592
8593   {
8594     Xpause,                             FALSE,  FALSE,
8595     EL_EMPTY,                           -1, -1
8596   },
8597
8598   {
8599     Xwall_1,                            TRUE,   FALSE,
8600     EL_WALL,                            -1, -1
8601   },
8602   {
8603     Xwall_2,                            TRUE,   FALSE,
8604     EL_EMC_WALL_14,                     -1, -1
8605   },
8606   {
8607     Xwall_3,                            TRUE,   FALSE,
8608     EL_EMC_WALL_15,                     -1, -1
8609   },
8610   {
8611     Xwall_4,                            TRUE,   FALSE,
8612     EL_EMC_WALL_16,                     -1, -1
8613   },
8614
8615   {
8616     Xroundwall_1,                       TRUE,   FALSE,
8617     EL_WALL_SLIPPERY,                   -1, -1
8618   },
8619   {
8620     Xroundwall_2,                       TRUE,   FALSE,
8621     EL_EMC_WALL_SLIPPERY_2,             -1, -1
8622   },
8623   {
8624     Xroundwall_3,                       TRUE,   FALSE,
8625     EL_EMC_WALL_SLIPPERY_3,             -1, -1
8626   },
8627   {
8628     Xroundwall_4,                       TRUE,   FALSE,
8629     EL_EMC_WALL_SLIPPERY_4,             -1, -1
8630   },
8631
8632   {
8633     Xsteel_1,                           TRUE,   FALSE,
8634     EL_STEELWALL,                       -1, -1
8635   },
8636   {
8637     Xsteel_2,                           TRUE,   FALSE,
8638     EL_EMC_STEELWALL_2,                 -1, -1
8639   },
8640   {
8641     Xsteel_3,                           TRUE,   FALSE,
8642     EL_EMC_STEELWALL_3,                 -1, -1
8643   },
8644   {
8645     Xsteel_4,                           TRUE,   FALSE,
8646     EL_EMC_STEELWALL_4,                 -1, -1
8647   },
8648
8649   {
8650     Xdecor_1,                           TRUE,   FALSE,
8651     EL_EMC_WALL_8,                      -1, -1
8652   },
8653   {
8654     Xdecor_2,                           TRUE,   FALSE,
8655     EL_EMC_WALL_6,                      -1, -1
8656   },
8657   {
8658     Xdecor_3,                           TRUE,   FALSE,
8659     EL_EMC_WALL_4,                      -1, -1
8660   },
8661   {
8662     Xdecor_4,                           TRUE,   FALSE,
8663     EL_EMC_WALL_7,                      -1, -1
8664   },
8665   {
8666     Xdecor_5,                           TRUE,   FALSE,
8667     EL_EMC_WALL_5,                      -1, -1
8668   },
8669   {
8670     Xdecor_6,                           TRUE,   FALSE,
8671     EL_EMC_WALL_9,                      -1, -1
8672   },
8673   {
8674     Xdecor_7,                           TRUE,   FALSE,
8675     EL_EMC_WALL_10,                     -1, -1
8676   },
8677   {
8678     Xdecor_8,                           TRUE,   FALSE,
8679     EL_EMC_WALL_1,                      -1, -1
8680   },
8681   {
8682     Xdecor_9,                           TRUE,   FALSE,
8683     EL_EMC_WALL_2,                      -1, -1
8684   },
8685   {
8686     Xdecor_10,                          TRUE,   FALSE,
8687     EL_EMC_WALL_3,                      -1, -1
8688   },
8689   {
8690     Xdecor_11,                          TRUE,   FALSE,
8691     EL_EMC_WALL_11,                     -1, -1
8692   },
8693   {
8694     Xdecor_12,                          TRUE,   FALSE,
8695     EL_EMC_WALL_12,                     -1, -1
8696   },
8697
8698   {
8699     Xalpha_0,                           TRUE,   FALSE,
8700     EL_CHAR('0'),                       -1, -1
8701   },
8702   {
8703     Xalpha_1,                           TRUE,   FALSE,
8704     EL_CHAR('1'),                       -1, -1
8705   },
8706   {
8707     Xalpha_2,                           TRUE,   FALSE,
8708     EL_CHAR('2'),                       -1, -1
8709   },
8710   {
8711     Xalpha_3,                           TRUE,   FALSE,
8712     EL_CHAR('3'),                       -1, -1
8713   },
8714   {
8715     Xalpha_4,                           TRUE,   FALSE,
8716     EL_CHAR('4'),                       -1, -1
8717   },
8718   {
8719     Xalpha_5,                           TRUE,   FALSE,
8720     EL_CHAR('5'),                       -1, -1
8721   },
8722   {
8723     Xalpha_6,                           TRUE,   FALSE,
8724     EL_CHAR('6'),                       -1, -1
8725   },
8726   {
8727     Xalpha_7,                           TRUE,   FALSE,
8728     EL_CHAR('7'),                       -1, -1
8729   },
8730   {
8731     Xalpha_8,                           TRUE,   FALSE,
8732     EL_CHAR('8'),                       -1, -1
8733   },
8734   {
8735     Xalpha_9,                           TRUE,   FALSE,
8736     EL_CHAR('9'),                       -1, -1
8737   },
8738   {
8739     Xalpha_excla,                       TRUE,   FALSE,
8740     EL_CHAR('!'),                       -1, -1
8741   },
8742   {
8743     Xalpha_apost,                       TRUE,   FALSE,
8744     EL_CHAR('\''),                      -1, -1
8745   },
8746   {
8747     Xalpha_comma,                       TRUE,   FALSE,
8748     EL_CHAR(','),                       -1, -1
8749   },
8750   {
8751     Xalpha_minus,                       TRUE,   FALSE,
8752     EL_CHAR('-'),                       -1, -1
8753   },
8754   {
8755     Xalpha_perio,                       TRUE,   FALSE,
8756     EL_CHAR('.'),                       -1, -1
8757   },
8758   {
8759     Xalpha_colon,                       TRUE,   FALSE,
8760     EL_CHAR(':'),                       -1, -1
8761   },
8762   {
8763     Xalpha_quest,                       TRUE,   FALSE,
8764     EL_CHAR('?'),                       -1, -1
8765   },
8766   {
8767     Xalpha_a,                           TRUE,   FALSE,
8768     EL_CHAR('A'),                       -1, -1
8769   },
8770   {
8771     Xalpha_b,                           TRUE,   FALSE,
8772     EL_CHAR('B'),                       -1, -1
8773   },
8774   {
8775     Xalpha_c,                           TRUE,   FALSE,
8776     EL_CHAR('C'),                       -1, -1
8777   },
8778   {
8779     Xalpha_d,                           TRUE,   FALSE,
8780     EL_CHAR('D'),                       -1, -1
8781   },
8782   {
8783     Xalpha_e,                           TRUE,   FALSE,
8784     EL_CHAR('E'),                       -1, -1
8785   },
8786   {
8787     Xalpha_f,                           TRUE,   FALSE,
8788     EL_CHAR('F'),                       -1, -1
8789   },
8790   {
8791     Xalpha_g,                           TRUE,   FALSE,
8792     EL_CHAR('G'),                       -1, -1
8793   },
8794   {
8795     Xalpha_h,                           TRUE,   FALSE,
8796     EL_CHAR('H'),                       -1, -1
8797   },
8798   {
8799     Xalpha_i,                           TRUE,   FALSE,
8800     EL_CHAR('I'),                       -1, -1
8801   },
8802   {
8803     Xalpha_j,                           TRUE,   FALSE,
8804     EL_CHAR('J'),                       -1, -1
8805   },
8806   {
8807     Xalpha_k,                           TRUE,   FALSE,
8808     EL_CHAR('K'),                       -1, -1
8809   },
8810   {
8811     Xalpha_l,                           TRUE,   FALSE,
8812     EL_CHAR('L'),                       -1, -1
8813   },
8814   {
8815     Xalpha_m,                           TRUE,   FALSE,
8816     EL_CHAR('M'),                       -1, -1
8817   },
8818   {
8819     Xalpha_n,                           TRUE,   FALSE,
8820     EL_CHAR('N'),                       -1, -1
8821   },
8822   {
8823     Xalpha_o,                           TRUE,   FALSE,
8824     EL_CHAR('O'),                       -1, -1
8825   },
8826   {
8827     Xalpha_p,                           TRUE,   FALSE,
8828     EL_CHAR('P'),                       -1, -1
8829   },
8830   {
8831     Xalpha_q,                           TRUE,   FALSE,
8832     EL_CHAR('Q'),                       -1, -1
8833   },
8834   {
8835     Xalpha_r,                           TRUE,   FALSE,
8836     EL_CHAR('R'),                       -1, -1
8837   },
8838   {
8839     Xalpha_s,                           TRUE,   FALSE,
8840     EL_CHAR('S'),                       -1, -1
8841   },
8842   {
8843     Xalpha_t,                           TRUE,   FALSE,
8844     EL_CHAR('T'),                       -1, -1
8845   },
8846   {
8847     Xalpha_u,                           TRUE,   FALSE,
8848     EL_CHAR('U'),                       -1, -1
8849   },
8850   {
8851     Xalpha_v,                           TRUE,   FALSE,
8852     EL_CHAR('V'),                       -1, -1
8853   },
8854   {
8855     Xalpha_w,                           TRUE,   FALSE,
8856     EL_CHAR('W'),                       -1, -1
8857   },
8858   {
8859     Xalpha_x,                           TRUE,   FALSE,
8860     EL_CHAR('X'),                       -1, -1
8861   },
8862   {
8863     Xalpha_y,                           TRUE,   FALSE,
8864     EL_CHAR('Y'),                       -1, -1
8865   },
8866   {
8867     Xalpha_z,                           TRUE,   FALSE,
8868     EL_CHAR('Z'),                       -1, -1
8869   },
8870   {
8871     Xalpha_arrow_e,                     TRUE,   FALSE,
8872     EL_CHAR('>'),                       -1, -1
8873   },
8874   {
8875     Xalpha_arrow_w,                     TRUE,   FALSE,
8876     EL_CHAR('<'),                       -1, -1
8877   },
8878   {
8879     Xalpha_copyr,                       TRUE,   FALSE,
8880     EL_CHAR(CHAR_BYTE_COPYRIGHT),       -1, -1
8881   },
8882
8883   {
8884     Ykey_1_blank,                       FALSE,  FALSE,
8885     EL_EM_KEY_1,                        ACTION_COLLECTING, -1
8886   },
8887   {
8888     Ykey_2_blank,                       FALSE,  FALSE,
8889     EL_EM_KEY_2,                        ACTION_COLLECTING, -1
8890   },
8891   {
8892     Ykey_3_blank,                       FALSE,  FALSE,
8893     EL_EM_KEY_3,                        ACTION_COLLECTING, -1
8894   },
8895   {
8896     Ykey_4_blank,                       FALSE,  FALSE,
8897     EL_EM_KEY_4,                        ACTION_COLLECTING, -1
8898   },
8899   {
8900     Ykey_5_blank,                       FALSE,  FALSE,
8901     EL_EMC_KEY_5,                       ACTION_COLLECTING, -1
8902   },
8903   {
8904     Ykey_6_blank,                       FALSE,  FALSE,
8905     EL_EMC_KEY_6,                       ACTION_COLLECTING, -1
8906   },
8907   {
8908     Ykey_7_blank,                       FALSE,  FALSE,
8909     EL_EMC_KEY_7,                       ACTION_COLLECTING, -1
8910   },
8911   {
8912     Ykey_8_blank,                       FALSE,  FALSE,
8913     EL_EMC_KEY_8,                       ACTION_COLLECTING, -1
8914   },
8915   {
8916     Ylenses_blank,                      FALSE,  FALSE,
8917     EL_EMC_LENSES,                      ACTION_COLLECTING, -1
8918   },
8919   {
8920     Ymagnify_blank,                     FALSE,  FALSE,
8921     EL_EMC_MAGNIFIER,                   ACTION_COLLECTING, -1
8922   },
8923   {
8924     Ygrass_blank,                       FALSE,  FALSE,
8925     EL_EMC_GRASS,                       ACTION_SNAPPING, -1
8926   },
8927   {
8928     Ydirt_blank,                        FALSE,  FALSE,
8929     EL_SAND,                            ACTION_SNAPPING, -1
8930   },
8931
8932   {
8933     -1,                                 FALSE,  FALSE,
8934     -1,                                 -1, -1
8935   }
8936 };
8937
8938 static struct Mapping_EM_to_RND_player
8939 {
8940   int action_em;
8941   int player_nr;
8942
8943   int element_rnd;
8944   int action;
8945   int direction;
8946 }
8947 em_player_mapping_list[MAX_PLAYERS * PLY_MAX + 1] =
8948 {
8949   {
8950     PLY_walk_n,                         0,
8951     EL_PLAYER_1,                        ACTION_MOVING, MV_BIT_UP,
8952   },
8953   {
8954     PLY_walk_e,                         0,
8955     EL_PLAYER_1,                        ACTION_MOVING, MV_BIT_RIGHT,
8956   },
8957   {
8958     PLY_walk_s,                         0,
8959     EL_PLAYER_1,                        ACTION_MOVING, MV_BIT_DOWN,
8960   },
8961   {
8962     PLY_walk_w,                         0,
8963     EL_PLAYER_1,                        ACTION_MOVING, MV_BIT_LEFT,
8964   },
8965   {
8966     PLY_push_n,                         0,
8967     EL_PLAYER_1,                        ACTION_PUSHING, MV_BIT_UP,
8968   },
8969   {
8970     PLY_push_e,                         0,
8971     EL_PLAYER_1,                        ACTION_PUSHING, MV_BIT_RIGHT,
8972   },
8973   {
8974     PLY_push_s,                         0,
8975     EL_PLAYER_1,                        ACTION_PUSHING, MV_BIT_DOWN,
8976   },
8977   {
8978     PLY_push_w,                         0,
8979     EL_PLAYER_1,                        ACTION_PUSHING, MV_BIT_LEFT,
8980   },
8981   {
8982     PLY_shoot_n,                        0,
8983     EL_PLAYER_1,                        ACTION_SNAPPING, MV_BIT_UP,
8984   },
8985   {
8986     PLY_shoot_e,                        0,
8987     EL_PLAYER_1,                        ACTION_SNAPPING, MV_BIT_RIGHT,
8988   },
8989   {
8990     PLY_shoot_s,                        0,
8991     EL_PLAYER_1,                        ACTION_SNAPPING, MV_BIT_DOWN,
8992   },
8993   {
8994     PLY_shoot_w,                        0,
8995     EL_PLAYER_1,                        ACTION_SNAPPING, MV_BIT_LEFT,
8996   },
8997   {
8998     PLY_walk_n,                         1,
8999     EL_PLAYER_2,                        ACTION_MOVING, MV_BIT_UP,
9000   },
9001   {
9002     PLY_walk_e,                         1,
9003     EL_PLAYER_2,                        ACTION_MOVING, MV_BIT_RIGHT,
9004   },
9005   {
9006     PLY_walk_s,                         1,
9007     EL_PLAYER_2,                        ACTION_MOVING, MV_BIT_DOWN,
9008   },
9009   {
9010     PLY_walk_w,                         1,
9011     EL_PLAYER_2,                        ACTION_MOVING, MV_BIT_LEFT,
9012   },
9013   {
9014     PLY_push_n,                         1,
9015     EL_PLAYER_2,                        ACTION_PUSHING, MV_BIT_UP,
9016   },
9017   {
9018     PLY_push_e,                         1,
9019     EL_PLAYER_2,                        ACTION_PUSHING, MV_BIT_RIGHT,
9020   },
9021   {
9022     PLY_push_s,                         1,
9023     EL_PLAYER_2,                        ACTION_PUSHING, MV_BIT_DOWN,
9024   },
9025   {
9026     PLY_push_w,                         1,
9027     EL_PLAYER_2,                        ACTION_PUSHING, MV_BIT_LEFT,
9028   },
9029   {
9030     PLY_shoot_n,                        1,
9031     EL_PLAYER_2,                        ACTION_SNAPPING, MV_BIT_UP,
9032   },
9033   {
9034     PLY_shoot_e,                        1,
9035     EL_PLAYER_2,                        ACTION_SNAPPING, MV_BIT_RIGHT,
9036   },
9037   {
9038     PLY_shoot_s,                        1,
9039     EL_PLAYER_2,                        ACTION_SNAPPING, MV_BIT_DOWN,
9040   },
9041   {
9042     PLY_shoot_w,                        1,
9043     EL_PLAYER_2,                        ACTION_SNAPPING, MV_BIT_LEFT,
9044   },
9045   {
9046     PLY_still,                          0,
9047     EL_PLAYER_1,                        ACTION_DEFAULT, -1,
9048   },
9049   {
9050     PLY_still,                          1,
9051     EL_PLAYER_2,                        ACTION_DEFAULT, -1,
9052   },
9053   {
9054     PLY_walk_n,                         2,
9055     EL_PLAYER_3,                        ACTION_MOVING, MV_BIT_UP,
9056   },
9057   {
9058     PLY_walk_e,                         2,
9059     EL_PLAYER_3,                        ACTION_MOVING, MV_BIT_RIGHT,
9060   },
9061   {
9062     PLY_walk_s,                         2,
9063     EL_PLAYER_3,                        ACTION_MOVING, MV_BIT_DOWN,
9064   },
9065   {
9066     PLY_walk_w,                         2,
9067     EL_PLAYER_3,                        ACTION_MOVING, MV_BIT_LEFT,
9068   },
9069   {
9070     PLY_push_n,                         2,
9071     EL_PLAYER_3,                        ACTION_PUSHING, MV_BIT_UP,
9072   },
9073   {
9074     PLY_push_e,                         2,
9075     EL_PLAYER_3,                        ACTION_PUSHING, MV_BIT_RIGHT,
9076   },
9077   {
9078     PLY_push_s,                         2,
9079     EL_PLAYER_3,                        ACTION_PUSHING, MV_BIT_DOWN,
9080   },
9081   {
9082     PLY_push_w,                         2,
9083     EL_PLAYER_3,                        ACTION_PUSHING, MV_BIT_LEFT,
9084   },
9085   {
9086     PLY_shoot_n,                        2,
9087     EL_PLAYER_3,                        ACTION_SNAPPING, MV_BIT_UP,
9088   },
9089   {
9090     PLY_shoot_e,                        2,
9091     EL_PLAYER_3,                        ACTION_SNAPPING, MV_BIT_RIGHT,
9092   },
9093   {
9094     PLY_shoot_s,                        2,
9095     EL_PLAYER_3,                        ACTION_SNAPPING, MV_BIT_DOWN,
9096   },
9097   {
9098     PLY_shoot_w,                        2,
9099     EL_PLAYER_3,                        ACTION_SNAPPING, MV_BIT_LEFT,
9100   },
9101   {
9102     PLY_walk_n,                         3,
9103     EL_PLAYER_4,                        ACTION_MOVING, MV_BIT_UP,
9104   },
9105   {
9106     PLY_walk_e,                         3,
9107     EL_PLAYER_4,                        ACTION_MOVING, MV_BIT_RIGHT,
9108   },
9109   {
9110     PLY_walk_s,                         3,
9111     EL_PLAYER_4,                        ACTION_MOVING, MV_BIT_DOWN,
9112   },
9113   {
9114     PLY_walk_w,                         3,
9115     EL_PLAYER_4,                        ACTION_MOVING, MV_BIT_LEFT,
9116   },
9117   {
9118     PLY_push_n,                         3,
9119     EL_PLAYER_4,                        ACTION_PUSHING, MV_BIT_UP,
9120   },
9121   {
9122     PLY_push_e,                         3,
9123     EL_PLAYER_4,                        ACTION_PUSHING, MV_BIT_RIGHT,
9124   },
9125   {
9126     PLY_push_s,                         3,
9127     EL_PLAYER_4,                        ACTION_PUSHING, MV_BIT_DOWN,
9128   },
9129   {
9130     PLY_push_w,                         3,
9131     EL_PLAYER_4,                        ACTION_PUSHING, MV_BIT_LEFT,
9132   },
9133   {
9134     PLY_shoot_n,                        3,
9135     EL_PLAYER_4,                        ACTION_SNAPPING, MV_BIT_UP,
9136   },
9137   {
9138     PLY_shoot_e,                        3,
9139     EL_PLAYER_4,                        ACTION_SNAPPING, MV_BIT_RIGHT,
9140   },
9141   {
9142     PLY_shoot_s,                        3,
9143     EL_PLAYER_4,                        ACTION_SNAPPING, MV_BIT_DOWN,
9144   },
9145   {
9146     PLY_shoot_w,                        3,
9147     EL_PLAYER_4,                        ACTION_SNAPPING, MV_BIT_LEFT,
9148   },
9149   {
9150     PLY_still,                          2,
9151     EL_PLAYER_3,                        ACTION_DEFAULT, -1,
9152   },
9153   {
9154     PLY_still,                          3,
9155     EL_PLAYER_4,                        ACTION_DEFAULT, -1,
9156   },
9157
9158   {
9159     -1,                                 -1,
9160     -1,                                 -1, -1
9161   }
9162 };
9163
9164 int map_element_RND_to_EM_cave(int element_rnd)
9165 {
9166   static unsigned short mapping_RND_to_EM[NUM_FILE_ELEMENTS];
9167   static boolean mapping_initialized = FALSE;
9168
9169   if (!mapping_initialized)
9170   {
9171     int i;
9172
9173     // return "Xalpha_quest" for all undefined elements in mapping array
9174     for (i = 0; i < NUM_FILE_ELEMENTS; i++)
9175       mapping_RND_to_EM[i] = Xalpha_quest;
9176
9177     for (i = 0; em_object_mapping_list[i].element_em != -1; i++)
9178       if (em_object_mapping_list[i].is_rnd_to_em_mapping)
9179         mapping_RND_to_EM[em_object_mapping_list[i].element_rnd] =
9180           em_object_mapping_list[i].element_em;
9181
9182     mapping_initialized = TRUE;
9183   }
9184
9185   if (element_rnd < 0 || element_rnd >= NUM_FILE_ELEMENTS)
9186   {
9187     Warn("invalid RND level element %d", element_rnd);
9188
9189     return EL_UNKNOWN;
9190   }
9191
9192   return map_em_element_X_to_C(mapping_RND_to_EM[element_rnd]);
9193 }
9194
9195 int map_element_EM_to_RND_cave(int element_em_cave)
9196 {
9197   static unsigned short mapping_EM_to_RND[GAME_TILE_MAX];
9198   static boolean mapping_initialized = FALSE;
9199
9200   if (!mapping_initialized)
9201   {
9202     int i;
9203
9204     // return "EL_UNKNOWN" for all undefined elements in mapping array
9205     for (i = 0; i < GAME_TILE_MAX; i++)
9206       mapping_EM_to_RND[i] = EL_UNKNOWN;
9207
9208     for (i = 0; em_object_mapping_list[i].element_em != -1; i++)
9209       mapping_EM_to_RND[em_object_mapping_list[i].element_em] =
9210         em_object_mapping_list[i].element_rnd;
9211
9212     mapping_initialized = TRUE;
9213   }
9214
9215   if (element_em_cave < 0 || element_em_cave >= CAVE_TILE_MAX)
9216   {
9217     Warn("invalid EM cave element %d", element_em_cave);
9218
9219     return EL_UNKNOWN;
9220   }
9221
9222   return mapping_EM_to_RND[map_em_element_C_to_X(element_em_cave)];
9223 }
9224
9225 int map_element_EM_to_RND_game(int element_em_game)
9226 {
9227   static unsigned short mapping_EM_to_RND[GAME_TILE_MAX];
9228   static boolean mapping_initialized = FALSE;
9229
9230   if (!mapping_initialized)
9231   {
9232     int i;
9233
9234     // return "EL_UNKNOWN" for all undefined elements in mapping array
9235     for (i = 0; i < GAME_TILE_MAX; i++)
9236       mapping_EM_to_RND[i] = EL_UNKNOWN;
9237
9238     for (i = 0; em_object_mapping_list[i].element_em != -1; i++)
9239       mapping_EM_to_RND[em_object_mapping_list[i].element_em] =
9240         em_object_mapping_list[i].element_rnd;
9241
9242     mapping_initialized = TRUE;
9243   }
9244
9245   if (element_em_game < 0 || element_em_game >= GAME_TILE_MAX)
9246   {
9247     Warn("invalid EM game element %d", element_em_game);
9248
9249     return EL_UNKNOWN;
9250   }
9251
9252   return mapping_EM_to_RND[element_em_game];
9253 }
9254
9255 void map_android_clone_elements_RND_to_EM(struct LevelInfo *level)
9256 {
9257   struct LevelInfo_EM *level_em = level->native_em_level;
9258   struct CAVE *cav = level_em->cav;
9259   int i, j;
9260
9261   for (i = 0; i < GAME_TILE_MAX; i++)
9262     cav->android_array[i] = Cblank;
9263
9264   for (i = 0; i < level->num_android_clone_elements; i++)
9265   {
9266     int element_rnd = level->android_clone_element[i];
9267     int element_em_cave = map_element_RND_to_EM_cave(element_rnd);
9268
9269     for (j = 0; em_object_mapping_list[j].element_em != -1; j++)
9270       if (em_object_mapping_list[j].element_rnd == element_rnd)
9271         cav->android_array[em_object_mapping_list[j].element_em] =
9272           element_em_cave;
9273   }
9274 }
9275
9276 void map_android_clone_elements_EM_to_RND(struct LevelInfo *level)
9277 {
9278   struct LevelInfo_EM *level_em = level->native_em_level;
9279   struct CAVE *cav = level_em->cav;
9280   int i, j;
9281
9282   level->num_android_clone_elements = 0;
9283
9284   for (i = 0; i < GAME_TILE_MAX; i++)
9285   {
9286     int element_em_cave = cav->android_array[i];
9287     int element_rnd;
9288     boolean element_found = FALSE;
9289
9290     if (element_em_cave == Cblank)
9291       continue;
9292
9293     element_rnd = map_element_EM_to_RND_cave(element_em_cave);
9294
9295     for (j = 0; j < level->num_android_clone_elements; j++)
9296       if (level->android_clone_element[j] == element_rnd)
9297         element_found = TRUE;
9298
9299     if (!element_found)
9300     {
9301       level->android_clone_element[level->num_android_clone_elements++] =
9302         element_rnd;
9303
9304       if (level->num_android_clone_elements == MAX_ANDROID_ELEMENTS)
9305         break;
9306     }
9307   }
9308
9309   if (level->num_android_clone_elements == 0)
9310   {
9311     level->num_android_clone_elements = 1;
9312     level->android_clone_element[0] = EL_EMPTY;
9313   }
9314 }
9315
9316 int map_direction_RND_to_EM(int direction)
9317 {
9318   return (direction == MV_UP    ? 0 :
9319           direction == MV_RIGHT ? 1 :
9320           direction == MV_DOWN  ? 2 :
9321           direction == MV_LEFT  ? 3 :
9322           -1);
9323 }
9324
9325 int map_direction_EM_to_RND(int direction)
9326 {
9327   return (direction == 0 ? MV_UP    :
9328           direction == 1 ? MV_RIGHT :
9329           direction == 2 ? MV_DOWN  :
9330           direction == 3 ? MV_LEFT  :
9331           MV_NONE);
9332 }
9333
9334 int map_element_RND_to_SP(int element_rnd)
9335 {
9336   int element_sp = 0x20;        // map unknown elements to yellow "hardware"
9337
9338   if (element_rnd >= EL_SP_START &&
9339       element_rnd <= EL_SP_END)
9340     element_sp = element_rnd - EL_SP_START;
9341   else if (element_rnd == EL_EMPTY_SPACE)
9342     element_sp = 0x00;
9343   else if (element_rnd == EL_INVISIBLE_WALL)
9344     element_sp = 0x28;
9345
9346   return element_sp;
9347 }
9348
9349 int map_element_SP_to_RND(int element_sp)
9350 {
9351   int element_rnd = EL_UNKNOWN;
9352
9353   if (element_sp >= 0x00 &&
9354       element_sp <= 0x27)
9355     element_rnd = EL_SP_START + element_sp;
9356   else if (element_sp == 0x28)
9357     element_rnd = EL_INVISIBLE_WALL;
9358
9359   return element_rnd;
9360 }
9361
9362 int map_action_SP_to_RND(int action_sp)
9363 {
9364   switch (action_sp)
9365   {
9366     case actActive:             return ACTION_ACTIVE;
9367     case actImpact:             return ACTION_IMPACT;
9368     case actExploding:          return ACTION_EXPLODING;
9369     case actDigging:            return ACTION_DIGGING;
9370     case actSnapping:           return ACTION_SNAPPING;
9371     case actCollecting:         return ACTION_COLLECTING;
9372     case actPassing:            return ACTION_PASSING;
9373     case actPushing:            return ACTION_PUSHING;
9374     case actDropping:           return ACTION_DROPPING;
9375
9376     default:                    return ACTION_DEFAULT;
9377   }
9378 }
9379
9380 int map_element_RND_to_MM(int element_rnd)
9381 {
9382   return (element_rnd >= EL_MM_START_1 &&
9383           element_rnd <= EL_MM_END_1 ?
9384           EL_MM_START_1_NATIVE + element_rnd - EL_MM_START_1 :
9385
9386           element_rnd >= EL_MM_START_2 &&
9387           element_rnd <= EL_MM_END_2 ?
9388           EL_MM_START_2_NATIVE + element_rnd - EL_MM_START_2 :
9389
9390           element_rnd >= EL_MM_START_3 &&
9391           element_rnd <= EL_MM_END_3 ?
9392           EL_MM_START_3_NATIVE + element_rnd - EL_MM_START_3 :
9393
9394           element_rnd >= EL_CHAR_START &&
9395           element_rnd <= EL_CHAR_END ?
9396           EL_MM_CHAR_START_NATIVE + element_rnd - EL_CHAR_START :
9397
9398           element_rnd >= EL_MM_RUNTIME_START &&
9399           element_rnd <= EL_MM_RUNTIME_END ?
9400           EL_MM_RUNTIME_START_NATIVE + element_rnd - EL_MM_RUNTIME_START :
9401
9402           EL_MM_EMPTY_NATIVE);
9403 }
9404
9405 int map_element_MM_to_RND(int element_mm)
9406 {
9407   return (element_mm == EL_MM_EMPTY_NATIVE ||
9408           element_mm == EL_DF_EMPTY_NATIVE ?
9409           EL_EMPTY :
9410
9411           element_mm >= EL_MM_START_1_NATIVE &&
9412           element_mm <= EL_MM_END_1_NATIVE ?
9413           EL_MM_START_1 + element_mm - EL_MM_START_1_NATIVE :
9414
9415           element_mm >= EL_MM_START_2_NATIVE &&
9416           element_mm <= EL_MM_END_2_NATIVE ?
9417           EL_MM_START_2 + element_mm - EL_MM_START_2_NATIVE :
9418
9419           element_mm >= EL_MM_START_3_NATIVE &&
9420           element_mm <= EL_MM_END_3_NATIVE ?
9421           EL_MM_START_3 + element_mm - EL_MM_START_3_NATIVE :
9422
9423           element_mm >= EL_MM_CHAR_START_NATIVE &&
9424           element_mm <= EL_MM_CHAR_END_NATIVE ?
9425           EL_CHAR_START + element_mm - EL_MM_CHAR_START_NATIVE :
9426
9427           element_mm >= EL_MM_RUNTIME_START_NATIVE &&
9428           element_mm <= EL_MM_RUNTIME_END_NATIVE ?
9429           EL_MM_RUNTIME_START + element_mm - EL_MM_RUNTIME_START_NATIVE :
9430
9431           EL_EMPTY);
9432 }
9433
9434 int map_action_MM_to_RND(int action_mm)
9435 {
9436   // all MM actions are defined to exactly match their RND counterparts
9437   return action_mm;
9438 }
9439
9440 int map_sound_MM_to_RND(int sound_mm)
9441 {
9442   switch (sound_mm)
9443   {
9444     case SND_MM_GAME_LEVELTIME_CHARGING:
9445       return SND_GAME_LEVELTIME_CHARGING;
9446
9447     case SND_MM_GAME_HEALTH_CHARGING:
9448       return SND_GAME_HEALTH_CHARGING;
9449
9450     default:
9451       return SND_UNDEFINED;
9452   }
9453 }
9454
9455 int map_mm_wall_element(int element)
9456 {
9457   return (element >= EL_MM_STEEL_WALL_START &&
9458           element <= EL_MM_STEEL_WALL_END ?
9459           EL_MM_STEEL_WALL :
9460
9461           element >= EL_MM_WOODEN_WALL_START &&
9462           element <= EL_MM_WOODEN_WALL_END ?
9463           EL_MM_WOODEN_WALL :
9464
9465           element >= EL_MM_ICE_WALL_START &&
9466           element <= EL_MM_ICE_WALL_END ?
9467           EL_MM_ICE_WALL :
9468
9469           element >= EL_MM_AMOEBA_WALL_START &&
9470           element <= EL_MM_AMOEBA_WALL_END ?
9471           EL_MM_AMOEBA_WALL :
9472
9473           element >= EL_DF_STEEL_WALL_START &&
9474           element <= EL_DF_STEEL_WALL_END ?
9475           EL_DF_STEEL_WALL :
9476
9477           element >= EL_DF_WOODEN_WALL_START &&
9478           element <= EL_DF_WOODEN_WALL_END ?
9479           EL_DF_WOODEN_WALL :
9480
9481           element);
9482 }
9483
9484 int map_mm_wall_element_editor(int element)
9485 {
9486   switch (element)
9487   {
9488     case EL_MM_STEEL_WALL:      return EL_MM_STEEL_WALL_START;
9489     case EL_MM_WOODEN_WALL:     return EL_MM_WOODEN_WALL_START;
9490     case EL_MM_ICE_WALL:        return EL_MM_ICE_WALL_START;
9491     case EL_MM_AMOEBA_WALL:     return EL_MM_AMOEBA_WALL_START;
9492     case EL_DF_STEEL_WALL:      return EL_DF_STEEL_WALL_START;
9493     case EL_DF_WOODEN_WALL:     return EL_DF_WOODEN_WALL_START;
9494
9495     default:                    return element;
9496   }
9497 }
9498
9499 int get_next_element(int element)
9500 {
9501   switch (element)
9502   {
9503     case EL_QUICKSAND_FILLING:          return EL_QUICKSAND_FULL;
9504     case EL_QUICKSAND_EMPTYING:         return EL_QUICKSAND_EMPTY;
9505     case EL_QUICKSAND_FAST_FILLING:     return EL_QUICKSAND_FAST_FULL;
9506     case EL_QUICKSAND_FAST_EMPTYING:    return EL_QUICKSAND_FAST_EMPTY;
9507     case EL_MAGIC_WALL_FILLING:         return EL_MAGIC_WALL_FULL;
9508     case EL_MAGIC_WALL_EMPTYING:        return EL_MAGIC_WALL_ACTIVE;
9509     case EL_BD_MAGIC_WALL_FILLING:      return EL_BD_MAGIC_WALL_FULL;
9510     case EL_BD_MAGIC_WALL_EMPTYING:     return EL_BD_MAGIC_WALL_ACTIVE;
9511     case EL_DC_MAGIC_WALL_FILLING:      return EL_DC_MAGIC_WALL_FULL;
9512     case EL_DC_MAGIC_WALL_EMPTYING:     return EL_DC_MAGIC_WALL_ACTIVE;
9513     case EL_AMOEBA_DROPPING:            return EL_AMOEBA_WET;
9514
9515     default:                            return element;
9516   }
9517 }
9518
9519 int el2img_mm(int element_mm)
9520 {
9521   return el2img(map_element_MM_to_RND(element_mm));
9522 }
9523
9524 int el_act2img_mm(int element_mm, int action)
9525 {
9526   return el_act2img(map_element_MM_to_RND(element_mm), action);
9527 }
9528
9529 int el_act_dir2img(int element, int action, int direction)
9530 {
9531   element = GFX_ELEMENT(element);
9532   direction = MV_DIR_TO_BIT(direction); // default: MV_NONE => MV_DOWN
9533
9534   // direction_graphic[][] == graphic[] for undefined direction graphics
9535   return element_info[element].direction_graphic[action][direction];
9536 }
9537
9538 static int el_act_dir2crm(int element, int action, int direction)
9539 {
9540   element = GFX_ELEMENT(element);
9541   direction = MV_DIR_TO_BIT(direction); // default: MV_NONE => MV_DOWN
9542
9543   // direction_graphic[][] == graphic[] for undefined direction graphics
9544   return element_info[element].direction_crumbled[action][direction];
9545 }
9546
9547 int el_act2img(int element, int action)
9548 {
9549   element = GFX_ELEMENT(element);
9550
9551   return element_info[element].graphic[action];
9552 }
9553
9554 int el_act2crm(int element, int action)
9555 {
9556   element = GFX_ELEMENT(element);
9557
9558   return element_info[element].crumbled[action];
9559 }
9560
9561 int el_dir2img(int element, int direction)
9562 {
9563   element = GFX_ELEMENT(element);
9564
9565   return el_act_dir2img(element, ACTION_DEFAULT, direction);
9566 }
9567
9568 int el2baseimg(int element)
9569 {
9570   return element_info[element].graphic[ACTION_DEFAULT];
9571 }
9572
9573 int el2img(int element)
9574 {
9575   element = GFX_ELEMENT(element);
9576
9577   return element_info[element].graphic[ACTION_DEFAULT];
9578 }
9579
9580 int el2edimg(int element)
9581 {
9582   element = GFX_ELEMENT(element);
9583
9584   return element_info[element].special_graphic[GFX_SPECIAL_ARG_EDITOR];
9585 }
9586
9587 int el2preimg(int element)
9588 {
9589   element = GFX_ELEMENT(element);
9590
9591   return element_info[element].special_graphic[GFX_SPECIAL_ARG_PREVIEW];
9592 }
9593
9594 int el2panelimg(int element)
9595 {
9596   element = GFX_ELEMENT(element);
9597
9598   return element_info[element].special_graphic[GFX_SPECIAL_ARG_PANEL];
9599 }
9600
9601 int font2baseimg(int font_nr)
9602 {
9603   return font_info[font_nr].special_graphic[GFX_SPECIAL_ARG_DEFAULT];
9604 }
9605
9606 int getBeltNrFromBeltElement(int element)
9607 {
9608   return (element < EL_CONVEYOR_BELT_2_LEFT ? 0 :
9609           element < EL_CONVEYOR_BELT_3_LEFT ? 1 :
9610           element < EL_CONVEYOR_BELT_4_LEFT ? 2 : 3);
9611 }
9612
9613 int getBeltNrFromBeltActiveElement(int element)
9614 {
9615   return (element < EL_CONVEYOR_BELT_2_LEFT_ACTIVE ? 0 :
9616           element < EL_CONVEYOR_BELT_3_LEFT_ACTIVE ? 1 :
9617           element < EL_CONVEYOR_BELT_4_LEFT_ACTIVE ? 2 : 3);
9618 }
9619
9620 int getBeltNrFromBeltSwitchElement(int element)
9621 {
9622   return (element < EL_CONVEYOR_BELT_2_SWITCH_LEFT ? 0 :
9623           element < EL_CONVEYOR_BELT_3_SWITCH_LEFT ? 1 :
9624           element < EL_CONVEYOR_BELT_4_SWITCH_LEFT ? 2 : 3);
9625 }
9626
9627 int getBeltDirNrFromBeltElement(int element)
9628 {
9629   static int belt_base_element[4] =
9630   {
9631     EL_CONVEYOR_BELT_1_LEFT,
9632     EL_CONVEYOR_BELT_2_LEFT,
9633     EL_CONVEYOR_BELT_3_LEFT,
9634     EL_CONVEYOR_BELT_4_LEFT
9635   };
9636
9637   int belt_nr = getBeltNrFromBeltElement(element);
9638   int belt_dir_nr = element - belt_base_element[belt_nr];
9639
9640   return (belt_dir_nr % 3);
9641 }
9642
9643 int getBeltDirNrFromBeltSwitchElement(int element)
9644 {
9645   static int belt_base_element[4] =
9646   {
9647     EL_CONVEYOR_BELT_1_SWITCH_LEFT,
9648     EL_CONVEYOR_BELT_2_SWITCH_LEFT,
9649     EL_CONVEYOR_BELT_3_SWITCH_LEFT,
9650     EL_CONVEYOR_BELT_4_SWITCH_LEFT
9651   };
9652
9653   int belt_nr = getBeltNrFromBeltSwitchElement(element);
9654   int belt_dir_nr = element - belt_base_element[belt_nr];
9655
9656   return (belt_dir_nr % 3);
9657 }
9658
9659 int getBeltDirFromBeltElement(int element)
9660 {
9661   static int belt_move_dir[3] =
9662   {
9663     MV_LEFT,
9664     MV_NONE,
9665     MV_RIGHT
9666   };
9667
9668   int belt_dir_nr = getBeltDirNrFromBeltElement(element);
9669
9670   return belt_move_dir[belt_dir_nr];
9671 }
9672
9673 int getBeltDirFromBeltSwitchElement(int element)
9674 {
9675   static int belt_move_dir[3] =
9676   {
9677     MV_LEFT,
9678     MV_NONE,
9679     MV_RIGHT
9680   };
9681
9682   int belt_dir_nr = getBeltDirNrFromBeltSwitchElement(element);
9683
9684   return belt_move_dir[belt_dir_nr];
9685 }
9686
9687 int getBeltElementFromBeltNrAndBeltDirNr(int belt_nr, int belt_dir_nr)
9688 {
9689   static int belt_base_element[4] =
9690   {
9691     EL_CONVEYOR_BELT_1_LEFT,
9692     EL_CONVEYOR_BELT_2_LEFT,
9693     EL_CONVEYOR_BELT_3_LEFT,
9694     EL_CONVEYOR_BELT_4_LEFT
9695   };
9696
9697   return belt_base_element[belt_nr] + belt_dir_nr;
9698 }
9699
9700 int getBeltElementFromBeltNrAndBeltDir(int belt_nr, int belt_dir)
9701 {
9702   int belt_dir_nr = (belt_dir == MV_LEFT ? 0 : belt_dir == MV_RIGHT ? 2 : 1);
9703
9704   return getBeltElementFromBeltNrAndBeltDirNr(belt_nr, belt_dir_nr);
9705 }
9706
9707 int getBeltSwitchElementFromBeltNrAndBeltDirNr(int belt_nr, int belt_dir_nr)
9708 {
9709   static int belt_base_element[4] =
9710   {
9711     EL_CONVEYOR_BELT_1_SWITCH_LEFT,
9712     EL_CONVEYOR_BELT_2_SWITCH_LEFT,
9713     EL_CONVEYOR_BELT_3_SWITCH_LEFT,
9714     EL_CONVEYOR_BELT_4_SWITCH_LEFT
9715   };
9716
9717   return belt_base_element[belt_nr] + belt_dir_nr;
9718 }
9719
9720 int getBeltSwitchElementFromBeltNrAndBeltDir(int belt_nr, int belt_dir)
9721 {
9722   int belt_dir_nr = (belt_dir == MV_LEFT ? 0 : belt_dir == MV_RIGHT ? 2 : 1);
9723
9724   return getBeltSwitchElementFromBeltNrAndBeltDirNr(belt_nr, belt_dir_nr);
9725 }
9726
9727 boolean swapTiles_EM(boolean is_pre_emc_cave)
9728 {
9729   return is_pre_emc_cave && leveldir_current->use_emc_tiles;
9730 }
9731
9732 boolean getTeamMode_EM(void)
9733 {
9734   return game.team_mode || network_playing;
9735 }
9736
9737 boolean isActivePlayer_EM(int player_nr)
9738 {
9739   return stored_player[player_nr].active;
9740 }
9741
9742 unsigned int InitRND(int seed)
9743 {
9744   if (level.game_engine_type == GAME_ENGINE_TYPE_BD)
9745     return InitEngineRandom_BD(seed);
9746   else if (level.game_engine_type == GAME_ENGINE_TYPE_EM)
9747     return InitEngineRandom_EM(seed);
9748   else if (level.game_engine_type == GAME_ENGINE_TYPE_SP)
9749     return InitEngineRandom_SP(seed);
9750   else if (level.game_engine_type == GAME_ENGINE_TYPE_MM)
9751     return InitEngineRandom_MM(seed);
9752   else
9753     return InitEngineRandom_RND(seed);
9754 }
9755
9756 static struct Mapping_BD_to_RND_object bd_object_mapping[O_MAX_ALL];
9757 static struct Mapping_EM_to_RND_object em_object_mapping[GAME_TILE_MAX];
9758 static struct Mapping_EM_to_RND_player em_player_mapping[MAX_PLAYERS][PLY_MAX];
9759
9760 static int get_effective_element_EM(int tile, int frame_em)
9761 {
9762   int element             = em_object_mapping[tile].element_rnd;
9763   int action              = em_object_mapping[tile].action;
9764   boolean is_backside     = em_object_mapping[tile].is_backside;
9765   boolean action_removing = (action == ACTION_DIGGING ||
9766                              action == ACTION_SNAPPING ||
9767                              action == ACTION_COLLECTING);
9768
9769   if (frame_em < 7)
9770   {
9771     switch (tile)
9772     {
9773       case Xsplash_e:
9774       case Xsplash_w:
9775         return (frame_em > 5 ? EL_EMPTY : element);
9776
9777       default:
9778         return element;
9779     }
9780   }
9781   else  // frame_em == 7
9782   {
9783     switch (tile)
9784     {
9785       case Xsplash_e:
9786       case Xsplash_w:
9787         return EL_EMPTY;
9788
9789       case Ynut_stone:
9790         return EL_EMERALD;
9791
9792       case Ydiamond_stone:
9793         return EL_ROCK;
9794
9795       case Xdrip_stretch:
9796       case Xdrip_stretchB:
9797       case Ydrip_1_s:
9798       case Ydrip_1_sB:
9799       case Yball_1:
9800       case Xball_2:
9801       case Yball_2:
9802       case Yball_blank:
9803       case Ykey_1_blank:
9804       case Ykey_2_blank:
9805       case Ykey_3_blank:
9806       case Ykey_4_blank:
9807       case Ykey_5_blank:
9808       case Ykey_6_blank:
9809       case Ykey_7_blank:
9810       case Ykey_8_blank:
9811       case Ylenses_blank:
9812       case Ymagnify_blank:
9813       case Ygrass_blank:
9814       case Ydirt_blank:
9815       case Xsand_stonein_1:
9816       case Xsand_stonein_2:
9817       case Xsand_stonein_3:
9818       case Xsand_stonein_4:
9819         return element;
9820
9821       default:
9822         return (is_backside || action_removing ? EL_EMPTY : element);
9823     }
9824   }
9825 }
9826
9827 static boolean check_linear_animation_EM(int tile)
9828 {
9829   switch (tile)
9830   {
9831     case Xsand_stonesand_1:
9832     case Xsand_stonesand_quickout_1:
9833     case Xsand_sandstone_1:
9834     case Xsand_stonein_1:
9835     case Xsand_stoneout_1:
9836     case Xboom_1:
9837     case Xdynamite_1:
9838     case Ybug_w_n:
9839     case Ybug_n_e:
9840     case Ybug_e_s:
9841     case Ybug_s_w:
9842     case Ybug_e_n:
9843     case Ybug_s_e:
9844     case Ybug_w_s:
9845     case Ybug_n_w:
9846     case Ytank_w_n:
9847     case Ytank_n_e:
9848     case Ytank_e_s:
9849     case Ytank_s_w:
9850     case Ytank_e_n:
9851     case Ytank_s_e:
9852     case Ytank_w_s:
9853     case Ytank_n_w:
9854     case Xsplash_e:
9855     case Xsplash_w:
9856     case Ynut_stone:
9857       return TRUE;
9858   }
9859
9860   return FALSE;
9861 }
9862
9863 static void set_crumbled_graphics_EM(struct GraphicInfo_EM *g_em,
9864                                      boolean has_crumbled_graphics,
9865                                      int crumbled, int sync_frame)
9866 {
9867   // if element can be crumbled, but certain action graphics are just empty
9868   // space (like instantly snapping sand to empty space in 1 frame), do not
9869   // treat these empty space graphics as crumbled graphics in EMC engine
9870   if (crumbled == IMG_EMPTY_SPACE)
9871     has_crumbled_graphics = FALSE;
9872
9873   if (has_crumbled_graphics)
9874   {
9875     struct GraphicInfo *g_crumbled = &graphic_info[crumbled];
9876     int frame_crumbled = getAnimationFrame(g_crumbled->anim_frames,
9877                                            g_crumbled->anim_delay,
9878                                            g_crumbled->anim_mode,
9879                                            g_crumbled->anim_start_frame,
9880                                            sync_frame);
9881
9882     getGraphicSource(crumbled, frame_crumbled, &g_em->crumbled_bitmap,
9883                      &g_em->crumbled_src_x, &g_em->crumbled_src_y);
9884
9885     g_em->crumbled_border_size = graphic_info[crumbled].border_size;
9886     g_em->crumbled_tile_size = graphic_info[crumbled].tile_size;
9887
9888     g_em->has_crumbled_graphics = TRUE;
9889   }
9890   else
9891   {
9892     g_em->crumbled_bitmap = NULL;
9893     g_em->crumbled_src_x = 0;
9894     g_em->crumbled_src_y = 0;
9895     g_em->crumbled_border_size = 0;
9896     g_em->crumbled_tile_size = 0;
9897
9898     g_em->has_crumbled_graphics = FALSE;
9899   }
9900 }
9901
9902 #if 0
9903 void ResetGfxAnimation_EM(int x, int y, int tile)
9904 {
9905   GfxFrame[x][y] = 0;
9906 }
9907 #endif
9908
9909 void SetGfxAnimation_EM(struct GraphicInfo_EM *g_em,
9910                         int tile, int frame_em, int x, int y)
9911 {
9912   int action = em_object_mapping[tile].action;
9913   int direction = em_object_mapping[tile].direction;
9914   int effective_element = get_effective_element_EM(tile, frame_em);
9915   int graphic = (direction == MV_NONE ?
9916                  el_act2img(effective_element, action) :
9917                  el_act_dir2img(effective_element, action, direction));
9918   struct GraphicInfo *g = &graphic_info[graphic];
9919   int sync_frame;
9920   boolean action_removing = (action == ACTION_DIGGING ||
9921                              action == ACTION_SNAPPING ||
9922                              action == ACTION_COLLECTING);
9923   boolean action_moving   = (action == ACTION_FALLING ||
9924                              action == ACTION_MOVING ||
9925                              action == ACTION_PUSHING ||
9926                              action == ACTION_EATING ||
9927                              action == ACTION_FILLING ||
9928                              action == ACTION_EMPTYING);
9929   boolean action_falling  = (action == ACTION_FALLING ||
9930                              action == ACTION_FILLING ||
9931                              action == ACTION_EMPTYING);
9932
9933   // special case: graphic uses "2nd movement tile" and has defined
9934   // 7 frames for movement animation (or less) => use default graphic
9935   // for last (8th) frame which ends the movement animation
9936   if (g->double_movement && g->anim_frames < 8 && frame_em == 7)
9937   {
9938     action = ACTION_DEFAULT;    // (keep action_* unchanged for now)
9939     graphic = (direction == MV_NONE ?
9940                el_act2img(effective_element, action) :
9941                el_act_dir2img(effective_element, action, direction));
9942
9943     g = &graphic_info[graphic];
9944   }
9945
9946   if ((action_removing || check_linear_animation_EM(tile)) && frame_em == 0)
9947   {
9948     GfxFrame[x][y] = 0;
9949   }
9950   else if (action_moving)
9951   {
9952     boolean is_backside = em_object_mapping[tile].is_backside;
9953
9954     if (is_backside)
9955     {
9956       int direction = em_object_mapping[tile].direction;
9957       int move_dir = (action_falling ? MV_DOWN : direction);
9958
9959       GfxFrame[x][y]++;
9960
9961 #if 1
9962       // !!! TEST !!! NEW !!! DOES NOT WORK RIGHT YET !!!
9963       if (g->double_movement && frame_em == 0)
9964         GfxFrame[x][y] = 0;
9965 #endif
9966
9967       if (move_dir == MV_LEFT)
9968         GfxFrame[x - 1][y] = GfxFrame[x][y];
9969       else if (move_dir == MV_RIGHT)
9970         GfxFrame[x + 1][y] = GfxFrame[x][y];
9971       else if (move_dir == MV_UP)
9972         GfxFrame[x][y - 1] = GfxFrame[x][y];
9973       else if (move_dir == MV_DOWN)
9974         GfxFrame[x][y + 1] = GfxFrame[x][y];
9975     }
9976   }
9977   else
9978   {
9979     GfxFrame[x][y]++;
9980
9981     // special case: animation for Xsand_stonesand_quickout_1/2 twice as fast
9982     if (tile == Xsand_stonesand_quickout_1 ||
9983         tile == Xsand_stonesand_quickout_2)
9984       GfxFrame[x][y]++;
9985   }
9986
9987   if (graphic_info[graphic].anim_global_sync)
9988     sync_frame = FrameCounter;
9989   else if (graphic_info[graphic].anim_global_anim_sync)
9990     sync_frame = getGlobalAnimSyncFrame();
9991   else if (IN_FIELD(x, y, MAX_LEV_FIELDX, MAX_LEV_FIELDY))
9992     sync_frame = GfxFrame[x][y];
9993   else
9994     sync_frame = 0;     // playfield border (pseudo steel)
9995
9996   SetRandomAnimationValue(x, y);
9997
9998   int frame = getAnimationFrame(g->anim_frames,
9999                                 g->anim_delay,
10000                                 g->anim_mode,
10001                                 g->anim_start_frame,
10002                                 sync_frame);
10003
10004   g_em->unique_identifier =
10005     (graphic << 16) | ((frame % 8) << 12) | (g_em->width << 6) | g_em->height;
10006 }
10007
10008 void getGraphicSourceObjectExt_EM(struct GraphicInfo_EM *g_em,
10009                                   int tile, int frame_em, int x, int y)
10010 {
10011   int action = em_object_mapping[tile].action;
10012   int direction = em_object_mapping[tile].direction;
10013   boolean is_backside = em_object_mapping[tile].is_backside;
10014   int effective_element = get_effective_element_EM(tile, frame_em);
10015   int effective_action = action;
10016   int graphic = (direction == MV_NONE ?
10017                  el_act2img(effective_element, effective_action) :
10018                  el_act_dir2img(effective_element, effective_action,
10019                                 direction));
10020   int crumbled = (direction == MV_NONE ?
10021                   el_act2crm(effective_element, effective_action) :
10022                   el_act_dir2crm(effective_element, effective_action,
10023                                  direction));
10024   int base_graphic = el_act2img(effective_element, ACTION_DEFAULT);
10025   int base_crumbled = el_act2crm(effective_element, ACTION_DEFAULT);
10026   boolean has_crumbled_graphics = (base_crumbled != base_graphic);
10027   struct GraphicInfo *g = &graphic_info[graphic];
10028   int sync_frame;
10029
10030   // special case: graphic uses "2nd movement tile" and has defined
10031   // 7 frames for movement animation (or less) => use default graphic
10032   // for last (8th) frame which ends the movement animation
10033   if (g->double_movement && g->anim_frames < 8 && frame_em == 7)
10034   {
10035     effective_action = ACTION_DEFAULT;
10036     graphic = (direction == MV_NONE ?
10037                el_act2img(effective_element, effective_action) :
10038                el_act_dir2img(effective_element, effective_action,
10039                               direction));
10040     crumbled = (direction == MV_NONE ?
10041                 el_act2crm(effective_element, effective_action) :
10042                 el_act_dir2crm(effective_element, effective_action,
10043                                direction));
10044
10045     g = &graphic_info[graphic];
10046   }
10047
10048   if (graphic_info[graphic].anim_global_sync)
10049     sync_frame = FrameCounter;
10050   else if (graphic_info[graphic].anim_global_anim_sync)
10051     sync_frame = getGlobalAnimSyncFrame();
10052   else if (IN_FIELD(x, y, MAX_LEV_FIELDX, MAX_LEV_FIELDY))
10053     sync_frame = GfxFrame[x][y];
10054   else
10055     sync_frame = 0;     // playfield border (pseudo steel)
10056
10057   SetRandomAnimationValue(x, y);
10058
10059   int frame = getAnimationFrame(g->anim_frames,
10060                                 g->anim_delay,
10061                                 g->anim_mode,
10062                                 g->anim_start_frame,
10063                                 sync_frame);
10064
10065   getGraphicSourceExt(graphic, frame, &g_em->bitmap, &g_em->src_x, &g_em->src_y,
10066                       g->double_movement && is_backside);
10067
10068   // (updating the "crumbled" graphic definitions is probably not really needed,
10069   // as animations for crumbled graphics can't be longer than one EMC cycle)
10070   set_crumbled_graphics_EM(g_em, has_crumbled_graphics, crumbled,
10071                            sync_frame);
10072 }
10073
10074 void getGraphicSourcePlayerExt_EM(struct GraphicInfo_EM *g_em,
10075                                   int player_nr, int anim, int frame_em)
10076 {
10077   int element   = em_player_mapping[player_nr][anim].element_rnd;
10078   int action    = em_player_mapping[player_nr][anim].action;
10079   int direction = em_player_mapping[player_nr][anim].direction;
10080   int graphic = (direction == MV_NONE ?
10081                  el_act2img(element, action) :
10082                  el_act_dir2img(element, action, direction));
10083   struct GraphicInfo *g = &graphic_info[graphic];
10084   int sync_frame;
10085
10086   InitPlayerGfxAnimation(&stored_player[player_nr], action, direction);
10087
10088   stored_player[player_nr].StepFrame = frame_em;
10089
10090   sync_frame = stored_player[player_nr].Frame;
10091
10092   int frame = getAnimationFrame(g->anim_frames,
10093                                 g->anim_delay,
10094                                 g->anim_mode,
10095                                 g->anim_start_frame,
10096                                 sync_frame);
10097
10098   getGraphicSourceExt(graphic, frame, &g_em->bitmap,
10099                       &g_em->src_x, &g_em->src_y, FALSE);
10100 }
10101
10102 #define BD_GFX_RANGE(a, n, i)           ((i) >= (a) && (i) < (a) + (n))
10103 #define BD_GFX_FRAME(b, i)              (((i) - (b)) * 8)
10104
10105 void InitGraphicInfo_BD(void)
10106 {
10107   int i, j;
10108
10109   // always start with reliable default values
10110   for (i = 0; i < O_MAX_ALL; i++)
10111   {
10112     bd_object_mapping[i].element_rnd = EL_UNKNOWN;
10113     bd_object_mapping[i].action = ACTION_DEFAULT;
10114     bd_object_mapping[i].direction = MV_NONE;
10115   }
10116
10117   for (i = 0; bd_object_mapping_list[i].element_bd != -1; i++)
10118   {
10119     int e = bd_object_mapping_list[i].element_bd;
10120
10121     bd_object_mapping[e].element_rnd = bd_object_mapping_list[i].element_rnd;
10122
10123     if (bd_object_mapping_list[i].action != -1)
10124       bd_object_mapping[e].action = bd_object_mapping_list[i].action;
10125
10126     if (bd_object_mapping_list[i].direction != -1)
10127       bd_object_mapping[e].direction =
10128         MV_DIR_FROM_BIT(bd_object_mapping_list[i].direction);
10129   }
10130
10131   for (i = 0; i < O_MAX_ALL; i++)
10132   {
10133     int element = bd_object_mapping[i].element_rnd;
10134     int action = bd_object_mapping[i].action;
10135     int direction = bd_object_mapping[i].direction;
10136
10137     for (j = 0; j < 8; j++)
10138     {
10139       int effective_element = element;
10140       int effective_action = action;
10141       int graphic = (el_act_dir2img(effective_element, effective_action,
10142                                     direction));
10143       struct GraphicInfo *g = &graphic_info[graphic];
10144       struct GraphicInfo_BD *g_bd = &graphic_info_bd_object[i][j];
10145       Bitmap *src_bitmap;
10146       int src_x, src_y;
10147       int sync_frame = (BD_GFX_RANGE(O_PRE_PL_1, 3, i)        ? BD_GFX_FRAME(O_PRE_PL_1, i) :
10148                         BD_GFX_RANGE(O_PRE_DIA_1, 5, i)       ? BD_GFX_FRAME(O_PRE_DIA_1, i) :
10149                         BD_GFX_RANGE(O_PRE_STONE_1, 4, i)     ? BD_GFX_FRAME(O_PRE_STONE_1, i) :
10150                         BD_GFX_RANGE(O_PRE_STEEL_1, 4, i)     ? BD_GFX_FRAME(O_PRE_STEEL_1, i) :
10151                         BD_GFX_RANGE(O_BOMB_TICK_1, 7, i)     ? BD_GFX_FRAME(O_BOMB_TICK_1, i) :
10152                         BD_GFX_RANGE(O_BOMB_EXPL_1, 4, i)     ? BD_GFX_FRAME(O_BOMB_EXPL_1, i) :
10153                         BD_GFX_RANGE(O_NUT_EXPL_1, 4, i)      ? BD_GFX_FRAME(O_NUT_EXPL_1, i) :
10154                         BD_GFX_RANGE(O_GHOST_EXPL_1, 4, i)    ? BD_GFX_FRAME(O_GHOST_EXPL_1, i) :
10155                         BD_GFX_RANGE(O_EXPLODE_1, 5, i)       ? BD_GFX_FRAME(O_EXPLODE_1, i) :
10156                         BD_GFX_RANGE(O_PRE_CLOCK_1, 4, i)     ? BD_GFX_FRAME(O_PRE_CLOCK_1, i) :
10157                         BD_GFX_RANGE(O_NITRO_EXPL_1, 4, i)    ? BD_GFX_FRAME(O_NITRO_EXPL_1, i) :
10158                         BD_GFX_RANGE(O_AMOEBA_2_EXPL_1, 4, i) ? BD_GFX_FRAME(O_AMOEBA_2_EXPL_1, i):
10159                         i == O_INBOX_OPEN || i == O_OUTBOX_OPEN ? j :
10160                         j * 2);
10161       int frame = getAnimationFrame(g->anim_frames,
10162                                     g->anim_delay,
10163                                     g->anim_mode,
10164                                     g->anim_start_frame,
10165                                     sync_frame);
10166
10167       getGraphicSourceExt(graphic, frame, &src_bitmap, &src_x, &src_y, FALSE);
10168
10169       g_bd->bitmap = src_bitmap;
10170       g_bd->src_x  = src_x;
10171       g_bd->src_y  = src_y;
10172       g_bd->width  = TILEX;
10173       g_bd->height = TILEY;
10174     }
10175   }
10176
10177   // game graphics template for level-specific colors for native BD levels
10178   int graphic = IMG_BD_GAME_GRAPHICS_COLOR_TEMPLATE;
10179   struct GraphicInfo_BD *g_bd = &graphic_info_bd_color_template;
10180   Bitmap *src_bitmap;
10181   int src_x, src_y;
10182
10183   getGraphicSourceExt(graphic, 0, &src_bitmap, &src_x, &src_y, FALSE);
10184
10185   g_bd->bitmap = src_bitmap;
10186   g_bd->src_x  = src_x;
10187   g_bd->src_y  = src_y;
10188   g_bd->width  = TILEX;
10189   g_bd->height = TILEY;
10190 }
10191
10192 void InitGraphicInfo_EM(void)
10193 {
10194   int i, j, p;
10195
10196   // always start with reliable default values
10197   for (i = 0; i < GAME_TILE_MAX; i++)
10198   {
10199     em_object_mapping[i].element_rnd = EL_UNKNOWN;
10200     em_object_mapping[i].is_backside = FALSE;
10201     em_object_mapping[i].action = ACTION_DEFAULT;
10202     em_object_mapping[i].direction = MV_NONE;
10203   }
10204
10205   // always start with reliable default values
10206   for (p = 0; p < MAX_PLAYERS; p++)
10207   {
10208     for (i = 0; i < PLY_MAX; i++)
10209     {
10210       em_player_mapping[p][i].element_rnd = EL_UNKNOWN;
10211       em_player_mapping[p][i].action = ACTION_DEFAULT;
10212       em_player_mapping[p][i].direction = MV_NONE;
10213     }
10214   }
10215
10216   for (i = 0; em_object_mapping_list[i].element_em != -1; i++)
10217   {
10218     int e = em_object_mapping_list[i].element_em;
10219
10220     em_object_mapping[e].element_rnd = em_object_mapping_list[i].element_rnd;
10221     em_object_mapping[e].is_backside = em_object_mapping_list[i].is_backside;
10222
10223     if (em_object_mapping_list[i].action != -1)
10224       em_object_mapping[e].action = em_object_mapping_list[i].action;
10225
10226     if (em_object_mapping_list[i].direction != -1)
10227       em_object_mapping[e].direction =
10228         MV_DIR_FROM_BIT(em_object_mapping_list[i].direction);
10229   }
10230
10231   for (i = 0; em_player_mapping_list[i].action_em != -1; i++)
10232   {
10233     int a = em_player_mapping_list[i].action_em;
10234     int p = em_player_mapping_list[i].player_nr;
10235
10236     em_player_mapping[p][a].element_rnd = em_player_mapping_list[i].element_rnd;
10237
10238     if (em_player_mapping_list[i].action != -1)
10239       em_player_mapping[p][a].action = em_player_mapping_list[i].action;
10240
10241     if (em_player_mapping_list[i].direction != -1)
10242       em_player_mapping[p][a].direction =
10243         MV_DIR_FROM_BIT(em_player_mapping_list[i].direction);
10244   }
10245
10246   for (i = 0; i < GAME_TILE_MAX; i++)
10247   {
10248     int element = em_object_mapping[i].element_rnd;
10249     int action = em_object_mapping[i].action;
10250     int direction = em_object_mapping[i].direction;
10251     boolean is_backside = em_object_mapping[i].is_backside;
10252     boolean action_exploding = ((action == ACTION_EXPLODING ||
10253                                  action == ACTION_SMASHED_BY_ROCK ||
10254                                  action == ACTION_SMASHED_BY_SPRING) &&
10255                                 element != EL_DIAMOND);
10256     boolean action_active = (action == ACTION_ACTIVE);
10257     boolean action_other = (action == ACTION_OTHER);
10258
10259     for (j = 0; j < 8; j++)
10260     {
10261       int effective_element = get_effective_element_EM(i, j);
10262       int effective_action = (j < 7 ? action :
10263                               i == Xdrip_stretch ? action :
10264                               i == Xdrip_stretchB ? action :
10265                               i == Ydrip_1_s ? action :
10266                               i == Ydrip_1_sB ? action :
10267                               i == Yball_1 ? action :
10268                               i == Xball_2 ? action :
10269                               i == Yball_2 ? action :
10270                               i == Yball_blank ? action :
10271                               i == Ykey_1_blank ? action :
10272                               i == Ykey_2_blank ? action :
10273                               i == Ykey_3_blank ? action :
10274                               i == Ykey_4_blank ? action :
10275                               i == Ykey_5_blank ? action :
10276                               i == Ykey_6_blank ? action :
10277                               i == Ykey_7_blank ? action :
10278                               i == Ykey_8_blank ? action :
10279                               i == Ylenses_blank ? action :
10280                               i == Ymagnify_blank ? action :
10281                               i == Ygrass_blank ? action :
10282                               i == Ydirt_blank ? action :
10283                               i == Xsand_stonein_1 ? action :
10284                               i == Xsand_stonein_2 ? action :
10285                               i == Xsand_stonein_3 ? action :
10286                               i == Xsand_stonein_4 ? action :
10287                               i == Xsand_stoneout_1 ? action :
10288                               i == Xsand_stoneout_2 ? action :
10289                               i == Xboom_android ? ACTION_EXPLODING :
10290                               action_exploding ? ACTION_EXPLODING :
10291                               action_active ? action :
10292                               action_other ? action :
10293                               ACTION_DEFAULT);
10294       int graphic = (el_act_dir2img(effective_element, effective_action,
10295                                     direction));
10296       int crumbled = (el_act_dir2crm(effective_element, effective_action,
10297                                      direction));
10298       int base_graphic = el_act2img(effective_element, ACTION_DEFAULT);
10299       int base_crumbled = el_act2crm(effective_element, ACTION_DEFAULT);
10300       boolean has_action_graphics = (graphic != base_graphic);
10301       boolean has_crumbled_graphics = (base_crumbled != base_graphic);
10302       struct GraphicInfo *g = &graphic_info[graphic];
10303       struct GraphicInfo_EM *g_em = &graphic_info_em_object[i][j];
10304       Bitmap *src_bitmap;
10305       int src_x, src_y;
10306       // ensure to get symmetric 3-frame, 2-delay animations as used in EM
10307       boolean special_animation = (action != ACTION_DEFAULT &&
10308                                    g->anim_frames == 3 &&
10309                                    g->anim_delay == 2 &&
10310                                    g->anim_mode & ANIM_LINEAR);
10311       int sync_frame = (i == Xdrip_stretch ? 7 :
10312                         i == Xdrip_stretchB ? 7 :
10313                         i == Ydrip_2_s ? j + 8 :
10314                         i == Ydrip_2_sB ? j + 8 :
10315                         i == Xacid_1 ? 0 :
10316                         i == Xacid_2 ? 10 :
10317                         i == Xacid_3 ? 20 :
10318                         i == Xacid_4 ? 30 :
10319                         i == Xacid_5 ? 40 :
10320                         i == Xacid_6 ? 50 :
10321                         i == Xacid_7 ? 60 :
10322                         i == Xacid_8 ? 70 :
10323                         i == Xfake_acid_1 ? 0 :
10324                         i == Xfake_acid_2 ? 10 :
10325                         i == Xfake_acid_3 ? 20 :
10326                         i == Xfake_acid_4 ? 30 :
10327                         i == Xfake_acid_5 ? 40 :
10328                         i == Xfake_acid_6 ? 50 :
10329                         i == Xfake_acid_7 ? 60 :
10330                         i == Xfake_acid_8 ? 70 :
10331                         i == Xfake_acid_1_player ? 0 :
10332                         i == Xfake_acid_2_player ? 10 :
10333                         i == Xfake_acid_3_player ? 20 :
10334                         i == Xfake_acid_4_player ? 30 :
10335                         i == Xfake_acid_5_player ? 40 :
10336                         i == Xfake_acid_6_player ? 50 :
10337                         i == Xfake_acid_7_player ? 60 :
10338                         i == Xfake_acid_8_player ? 70 :
10339                         i == Xball_2 ? 7 :
10340                         i == Yball_2 ? j + 8 :
10341                         i == Yball_blank ? j + 1 :
10342                         i == Ykey_1_blank ? j + 1 :
10343                         i == Ykey_2_blank ? j + 1 :
10344                         i == Ykey_3_blank ? j + 1 :
10345                         i == Ykey_4_blank ? j + 1 :
10346                         i == Ykey_5_blank ? j + 1 :
10347                         i == Ykey_6_blank ? j + 1 :
10348                         i == Ykey_7_blank ? j + 1 :
10349                         i == Ykey_8_blank ? j + 1 :
10350                         i == Ylenses_blank ? j + 1 :
10351                         i == Ymagnify_blank ? j + 1 :
10352                         i == Ygrass_blank ? j + 1 :
10353                         i == Ydirt_blank ? j + 1 :
10354                         i == Xamoeba_1 ? 0 :
10355                         i == Xamoeba_2 ? 1 :
10356                         i == Xamoeba_3 ? 2 :
10357                         i == Xamoeba_4 ? 3 :
10358                         i == Xamoeba_5 ? 0 :
10359                         i == Xamoeba_6 ? 1 :
10360                         i == Xamoeba_7 ? 2 :
10361                         i == Xamoeba_8 ? 3 :
10362                         i == Xexit_2 ? j + 8 :
10363                         i == Xexit_3 ? j + 16 :
10364                         i == Xdynamite_1 ? 0 :
10365                         i == Xdynamite_2 ? 8 :
10366                         i == Xdynamite_3 ? 16 :
10367                         i == Xdynamite_4 ? 24 :
10368                         i == Xsand_stonein_1 ? j + 1 :
10369                         i == Xsand_stonein_2 ? j + 9 :
10370                         i == Xsand_stonein_3 ? j + 17 :
10371                         i == Xsand_stonein_4 ? j + 25 :
10372                         i == Xsand_stoneout_1 && j == 0 ? 0 :
10373                         i == Xsand_stoneout_1 && j == 1 ? 0 :
10374                         i == Xsand_stoneout_1 && j == 2 ? 1 :
10375                         i == Xsand_stoneout_1 && j == 3 ? 2 :
10376                         i == Xsand_stoneout_1 && j == 4 ? 2 :
10377                         i == Xsand_stoneout_1 && j == 5 ? 3 :
10378                         i == Xsand_stoneout_1 && j == 6 ? 4 :
10379                         i == Xsand_stoneout_1 && j == 7 ? 4 :
10380                         i == Xsand_stoneout_2 && j == 0 ? 5 :
10381                         i == Xsand_stoneout_2 && j == 1 ? 6 :
10382                         i == Xsand_stoneout_2 && j == 2 ? 7 :
10383                         i == Xsand_stoneout_2 && j == 3 ? 8 :
10384                         i == Xsand_stoneout_2 && j == 4 ? 9 :
10385                         i == Xsand_stoneout_2 && j == 5 ? 11 :
10386                         i == Xsand_stoneout_2 && j == 6 ? 13 :
10387                         i == Xsand_stoneout_2 && j == 7 ? 15 :
10388                         i == Xboom_bug && j == 1 ? 2 :
10389                         i == Xboom_bug && j == 2 ? 2 :
10390                         i == Xboom_bug && j == 3 ? 4 :
10391                         i == Xboom_bug && j == 4 ? 4 :
10392                         i == Xboom_bug && j == 5 ? 2 :
10393                         i == Xboom_bug && j == 6 ? 2 :
10394                         i == Xboom_bug && j == 7 ? 0 :
10395                         i == Xboom_tank && j == 1 ? 2 :
10396                         i == Xboom_tank && j == 2 ? 2 :
10397                         i == Xboom_tank && j == 3 ? 4 :
10398                         i == Xboom_tank && j == 4 ? 4 :
10399                         i == Xboom_tank && j == 5 ? 2 :
10400                         i == Xboom_tank && j == 6 ? 2 :
10401                         i == Xboom_tank && j == 7 ? 0 :
10402                         i == Xboom_android && j == 7 ? 6 :
10403                         i == Xboom_1 && j == 1 ? 2 :
10404                         i == Xboom_1 && j == 2 ? 2 :
10405                         i == Xboom_1 && j == 3 ? 4 :
10406                         i == Xboom_1 && j == 4 ? 4 :
10407                         i == Xboom_1 && j == 5 ? 6 :
10408                         i == Xboom_1 && j == 6 ? 6 :
10409                         i == Xboom_1 && j == 7 ? 8 :
10410                         i == Xboom_2 && j == 0 ? 8 :
10411                         i == Xboom_2 && j == 1 ? 8 :
10412                         i == Xboom_2 && j == 2 ? 10 :
10413                         i == Xboom_2 && j == 3 ? 10 :
10414                         i == Xboom_2 && j == 4 ? 10 :
10415                         i == Xboom_2 && j == 5 ? 12 :
10416                         i == Xboom_2 && j == 6 ? 12 :
10417                         i == Xboom_2 && j == 7 ? 12 :
10418                         special_animation && j == 4 ? 3 :
10419                         effective_action != action ? 0 :
10420                         j);
10421       int frame = getAnimationFrame(g->anim_frames,
10422                                     g->anim_delay,
10423                                     g->anim_mode,
10424                                     g->anim_start_frame,
10425                                     sync_frame);
10426
10427       getGraphicSourceExt(graphic, frame, &src_bitmap, &src_x, &src_y,
10428                           g->double_movement && is_backside);
10429
10430       g_em->bitmap = src_bitmap;
10431       g_em->src_x = src_x;
10432       g_em->src_y = src_y;
10433       g_em->src_offset_x = 0;
10434       g_em->src_offset_y = 0;
10435       g_em->dst_offset_x = 0;
10436       g_em->dst_offset_y = 0;
10437       g_em->width  = TILEX;
10438       g_em->height = TILEY;
10439
10440       g_em->preserve_background = FALSE;
10441
10442       set_crumbled_graphics_EM(g_em, has_crumbled_graphics, crumbled,
10443                                sync_frame);
10444
10445       if ((!g->double_movement && (effective_action == ACTION_FALLING ||
10446                                    effective_action == ACTION_MOVING  ||
10447                                    effective_action == ACTION_PUSHING ||
10448                                    effective_action == ACTION_EATING)) ||
10449           (!has_action_graphics && (effective_action == ACTION_FILLING ||
10450                                     effective_action == ACTION_EMPTYING)))
10451       {
10452         int move_dir =
10453           (effective_action == ACTION_FALLING ||
10454            effective_action == ACTION_FILLING ||
10455            effective_action == ACTION_EMPTYING ? MV_DOWN : direction);
10456         int dx = (move_dir == MV_LEFT ? -1 : move_dir == MV_RIGHT ? 1 : 0);
10457         int dy = (move_dir == MV_UP   ? -1 : move_dir == MV_DOWN  ? 1 : 0);
10458         int num_steps = (i == Ydrip_1_s  ? 16 :
10459                          i == Ydrip_1_sB ? 16 :
10460                          i == Ydrip_2_s  ? 16 :
10461                          i == Ydrip_2_sB ? 16 :
10462                          i == Xsand_stonein_1 ? 32 :
10463                          i == Xsand_stonein_2 ? 32 :
10464                          i == Xsand_stonein_3 ? 32 :
10465                          i == Xsand_stonein_4 ? 32 :
10466                          i == Xsand_stoneout_1 ? 16 :
10467                          i == Xsand_stoneout_2 ? 16 : 8);
10468         int cx = ABS(dx) * (TILEX / num_steps);
10469         int cy = ABS(dy) * (TILEY / num_steps);
10470         int step_frame = (i == Ydrip_2_s        ? j + 8 :
10471                           i == Ydrip_2_sB       ? j + 8 :
10472                           i == Xsand_stonein_2  ? j + 8 :
10473                           i == Xsand_stonein_3  ? j + 16 :
10474                           i == Xsand_stonein_4  ? j + 24 :
10475                           i == Xsand_stoneout_2 ? j + 8 : j) + 1;
10476         int step = (is_backside ? step_frame : num_steps - step_frame);
10477
10478         if (is_backside)        // tile where movement starts
10479         {
10480           if (dx < 0 || dy < 0)
10481           {
10482             g_em->src_offset_x = cx * step;
10483             g_em->src_offset_y = cy * step;
10484           }
10485           else
10486           {
10487             g_em->dst_offset_x = cx * step;
10488             g_em->dst_offset_y = cy * step;
10489           }
10490         }
10491         else                    // tile where movement ends
10492         {
10493           if (dx < 0 || dy < 0)
10494           {
10495             g_em->dst_offset_x = cx * step;
10496             g_em->dst_offset_y = cy * step;
10497           }
10498           else
10499           {
10500             g_em->src_offset_x = cx * step;
10501             g_em->src_offset_y = cy * step;
10502           }
10503         }
10504
10505         g_em->width  = TILEX - cx * step;
10506         g_em->height = TILEY - cy * step;
10507       }
10508
10509       // create unique graphic identifier to decide if tile must be redrawn
10510       /* bit 31 - 16 (16 bit): EM style graphic
10511          bit 15 - 12 ( 4 bit): EM style frame
10512          bit 11 -  6 ( 6 bit): graphic width
10513          bit  5 -  0 ( 6 bit): graphic height */
10514       g_em->unique_identifier =
10515         (graphic << 16) | (frame << 12) | (g_em->width << 6) | g_em->height;
10516     }
10517   }
10518
10519   for (i = 0; i < GAME_TILE_MAX; i++)
10520   {
10521     for (j = 0; j < 8; j++)
10522     {
10523       int element = em_object_mapping[i].element_rnd;
10524       int action = em_object_mapping[i].action;
10525       int direction = em_object_mapping[i].direction;
10526       boolean is_backside = em_object_mapping[i].is_backside;
10527       int graphic_action  = el_act_dir2img(element, action, direction);
10528       int graphic_default = el_act_dir2img(element, ACTION_DEFAULT, direction);
10529
10530       if ((action == ACTION_SMASHED_BY_ROCK ||
10531            action == ACTION_SMASHED_BY_SPRING ||
10532            action == ACTION_EATING) &&
10533           graphic_action == graphic_default)
10534       {
10535         int e = (action == ACTION_SMASHED_BY_ROCK   ? Ystone_s  :
10536                  action == ACTION_SMASHED_BY_SPRING ? Yspring_s :
10537                  direction == MV_LEFT  ? (is_backside? Yspring_wB: Yspring_w) :
10538                  direction == MV_RIGHT ? (is_backside? Yspring_eB: Yspring_e) :
10539                  Xspring);
10540
10541         // no separate animation for "smashed by rock" -- use rock instead
10542         struct GraphicInfo_EM *g_em = &graphic_info_em_object[i][j];
10543         struct GraphicInfo_EM *g_xx = &graphic_info_em_object[e][j];
10544
10545         g_em->bitmap            = g_xx->bitmap;
10546         g_em->src_x             = g_xx->src_x;
10547         g_em->src_y             = g_xx->src_y;
10548         g_em->src_offset_x      = g_xx->src_offset_x;
10549         g_em->src_offset_y      = g_xx->src_offset_y;
10550         g_em->dst_offset_x      = g_xx->dst_offset_x;
10551         g_em->dst_offset_y      = g_xx->dst_offset_y;
10552         g_em->width             = g_xx->width;
10553         g_em->height            = g_xx->height;
10554         g_em->unique_identifier = g_xx->unique_identifier;
10555
10556         if (!is_backside)
10557           g_em->preserve_background = TRUE;
10558       }
10559     }
10560   }
10561
10562   for (p = 0; p < MAX_PLAYERS; p++)
10563   {
10564     for (i = 0; i < PLY_MAX; i++)
10565     {
10566       int element = em_player_mapping[p][i].element_rnd;
10567       int action = em_player_mapping[p][i].action;
10568       int direction = em_player_mapping[p][i].direction;
10569
10570       for (j = 0; j < 8; j++)
10571       {
10572         int effective_element = element;
10573         int effective_action = action;
10574         int graphic = (direction == MV_NONE ?
10575                        el_act2img(effective_element, effective_action) :
10576                        el_act_dir2img(effective_element, effective_action,
10577                                       direction));
10578         struct GraphicInfo *g = &graphic_info[graphic];
10579         struct GraphicInfo_EM *g_em = &graphic_info_em_player[p][i][j];
10580         Bitmap *src_bitmap;
10581         int src_x, src_y;
10582         int sync_frame = j;
10583         int frame = getAnimationFrame(g->anim_frames,
10584                                       g->anim_delay,
10585                                       g->anim_mode,
10586                                       g->anim_start_frame,
10587                                       sync_frame);
10588
10589         getGraphicSourceExt(graphic, frame, &src_bitmap, &src_x, &src_y, FALSE);
10590
10591         g_em->bitmap = src_bitmap;
10592         g_em->src_x = src_x;
10593         g_em->src_y = src_y;
10594         g_em->src_offset_x = 0;
10595         g_em->src_offset_y = 0;
10596         g_em->dst_offset_x = 0;
10597         g_em->dst_offset_y = 0;
10598         g_em->width  = TILEX;
10599         g_em->height = TILEY;
10600       }
10601     }
10602   }
10603 }
10604
10605 static void CheckSaveEngineSnapshot_EM(int frame,
10606                                        boolean any_player_moving,
10607                                        boolean any_player_snapping,
10608                                        boolean any_player_dropping)
10609 {
10610   if (frame == 7 && !any_player_dropping)
10611   {
10612     if (!local_player->was_waiting)
10613     {
10614       if (!CheckSaveEngineSnapshotToList())
10615         return;
10616
10617       local_player->was_waiting = TRUE;
10618     }
10619   }
10620   else if (any_player_moving || any_player_snapping || any_player_dropping)
10621   {
10622     local_player->was_waiting = FALSE;
10623   }
10624 }
10625
10626 static void CheckSaveEngineSnapshot_SP(boolean murphy_is_waiting,
10627                                        boolean murphy_is_dropping)
10628 {
10629   if (murphy_is_waiting)
10630   {
10631     if (!local_player->was_waiting)
10632     {
10633       if (!CheckSaveEngineSnapshotToList())
10634         return;
10635
10636       local_player->was_waiting = TRUE;
10637     }
10638   }
10639   else
10640   {
10641     local_player->was_waiting = FALSE;
10642   }
10643 }
10644
10645 static void CheckSaveEngineSnapshot_MM(boolean element_clicked,
10646                                        boolean button_released)
10647 {
10648   if (button_released)
10649   {
10650     if (game.snapshot.mode == SNAPSHOT_MODE_EVERY_MOVE)
10651       CheckSaveEngineSnapshotToList();
10652   }
10653   else if (element_clicked)
10654   {
10655     if (game.snapshot.mode != SNAPSHOT_MODE_EVERY_MOVE)
10656       CheckSaveEngineSnapshotToList();
10657
10658     game.snapshot.changed_action = TRUE;
10659   }
10660 }
10661
10662 boolean CheckSingleStepMode_EM(int frame,
10663                                boolean any_player_moving,
10664                                boolean any_player_snapping,
10665                                boolean any_player_dropping)
10666 {
10667   if (tape.single_step && tape.recording && !tape.pausing)
10668     if (frame == 7 && !any_player_dropping && FrameCounter > 6)
10669       TapeTogglePause(TAPE_TOGGLE_AUTOMATIC);
10670
10671   CheckSaveEngineSnapshot_EM(frame, any_player_moving,
10672                              any_player_snapping, any_player_dropping);
10673
10674   return tape.pausing;
10675 }
10676
10677 void CheckSingleStepMode_SP(boolean murphy_is_waiting,
10678                             boolean murphy_is_dropping)
10679 {
10680   boolean murphy_starts_dropping = FALSE;
10681   int i;
10682
10683   for (i = 0; i < MAX_PLAYERS; i++)
10684     if (stored_player[i].force_dropping)
10685       murphy_starts_dropping = TRUE;
10686
10687   if (tape.single_step && tape.recording && !tape.pausing)
10688     if (murphy_is_waiting && !murphy_starts_dropping)
10689       TapeTogglePause(TAPE_TOGGLE_AUTOMATIC);
10690
10691   CheckSaveEngineSnapshot_SP(murphy_is_waiting, murphy_is_dropping);
10692 }
10693
10694 void CheckSingleStepMode_MM(boolean element_clicked,
10695                             boolean button_released)
10696 {
10697   if (tape.single_step && tape.recording && !tape.pausing)
10698     if (button_released)
10699       TapeTogglePause(TAPE_TOGGLE_AUTOMATIC);
10700
10701   CheckSaveEngineSnapshot_MM(element_clicked, button_released);
10702 }
10703
10704 void getGraphicSource_SP(struct GraphicInfo_SP *g_sp,
10705                          int graphic, int sync_frame)
10706 {
10707   int frame = getGraphicAnimationFrame(graphic, sync_frame);
10708
10709   getGraphicSource(graphic, frame, &g_sp->bitmap, &g_sp->src_x, &g_sp->src_y);
10710 }
10711
10712 boolean isNextAnimationFrame_SP(int graphic, int sync_frame)
10713 {
10714   return (IS_NEXT_FRAME(sync_frame, graphic));
10715 }
10716
10717 int getGraphicInfo_Delay(int graphic)
10718 {
10719   return graphic_info[graphic].anim_delay;
10720 }
10721
10722 boolean getGraphicInfo_NewFrame(int x, int y, int graphic)
10723 {
10724   if (!IS_NEW_FRAME(GfxFrame[x][y], graphic))
10725     return FALSE;
10726
10727   if (ANIM_MODE(graphic) & (ANIM_TILED | ANIM_RANDOM_STATIC))
10728     return FALSE;
10729
10730   return TRUE;
10731 }
10732
10733 void PlayMenuSoundExt(int sound)
10734 {
10735   if (sound == SND_UNDEFINED)
10736     return;
10737
10738   if ((!setup.sound_simple && !IS_LOOP_SOUND(sound)) ||
10739       (!setup.sound_loops && IS_LOOP_SOUND(sound)))
10740     return;
10741
10742   if (IS_LOOP_SOUND(sound))
10743     PlaySoundLoop(sound);
10744   else
10745     PlaySound(sound);
10746 }
10747
10748 void PlayMenuSound(void)
10749 {
10750   PlayMenuSoundExt(menu.sound[game_status]);
10751 }
10752
10753 void PlayMenuSoundStereo(int sound, int stereo_position)
10754 {
10755   if (sound == SND_UNDEFINED)
10756     return;
10757
10758   if ((!setup.sound_simple && !IS_LOOP_SOUND(sound)) ||
10759       (!setup.sound_loops && IS_LOOP_SOUND(sound)))
10760     return;
10761
10762   if (IS_LOOP_SOUND(sound))
10763     PlaySoundExt(sound, SOUND_MAX_VOLUME, stereo_position, SND_CTRL_PLAY_LOOP);
10764   else
10765     PlaySoundStereo(sound, stereo_position);
10766 }
10767
10768 void PlayMenuSoundIfLoopExt(int sound)
10769 {
10770   if (sound == SND_UNDEFINED)
10771     return;
10772
10773   if ((!setup.sound_simple && !IS_LOOP_SOUND(sound)) ||
10774       (!setup.sound_loops && IS_LOOP_SOUND(sound)))
10775     return;
10776
10777   if (IS_LOOP_SOUND(sound))
10778     PlaySoundLoop(sound);
10779 }
10780
10781 void PlayMenuSoundIfLoop(void)
10782 {
10783   PlayMenuSoundIfLoopExt(menu.sound[game_status]);
10784 }
10785
10786 void PlayMenuMusicExt(int music)
10787 {
10788   if (music == MUS_UNDEFINED)
10789     return;
10790
10791   if (!setup.sound_music)
10792     return;
10793
10794   if (IS_LOOP_MUSIC(music))
10795     PlayMusicLoop(music);
10796   else
10797     PlayMusic(music);
10798 }
10799
10800 void PlayMenuMusic(void)
10801 {
10802   char *curr_music = getCurrentlyPlayingMusicFilename();
10803   char *next_music = getMusicInfoEntryFilename(menu.music[game_status]);
10804
10805   if (!strEqual(curr_music, next_music))
10806     PlayMenuMusicExt(menu.music[game_status]);
10807 }
10808
10809 void PlayMenuSoundsAndMusic(void)
10810 {
10811   PlayMenuSound();
10812   PlayMenuMusic();
10813 }
10814
10815 static void FadeMenuSounds(void)
10816 {
10817   FadeSounds();
10818 }
10819
10820 static void FadeMenuMusic(void)
10821 {
10822   char *curr_music = getCurrentlyPlayingMusicFilename();
10823   char *next_music = getMusicInfoEntryFilename(menu.music[game_status]);
10824
10825   if (!strEqual(curr_music, next_music))
10826     FadeMusic();
10827 }
10828
10829 void FadeMenuSoundsAndMusic(void)
10830 {
10831   FadeMenuSounds();
10832   FadeMenuMusic();
10833 }
10834
10835 void PlaySoundActivating(void)
10836 {
10837 #if 0
10838   PlaySound(SND_MENU_ITEM_ACTIVATING);
10839 #endif
10840 }
10841
10842 void PlaySoundSelecting(void)
10843 {
10844 #if 0
10845   PlaySound(SND_MENU_ITEM_SELECTING);
10846 #endif
10847 }
10848
10849 void ToggleFullscreenIfNeeded(void)
10850 {
10851   // if setup and video fullscreen state are already matching, nothing do do
10852   if (setup.fullscreen == video.fullscreen_enabled ||
10853       !video.fullscreen_available)
10854     return;
10855
10856   SDLSetWindowFullscreen(setup.fullscreen);
10857
10858   // set setup value according to successfully changed fullscreen mode
10859   setup.fullscreen = video.fullscreen_enabled;
10860 }
10861
10862 void ChangeWindowScalingIfNeeded(void)
10863 {
10864   // if setup and video window scaling are already matching, nothing do do
10865   if (setup.window_scaling_percent == video.window_scaling_percent ||
10866       video.fullscreen_enabled)
10867     return;
10868
10869   SDLSetWindowScaling(setup.window_scaling_percent);
10870
10871   // set setup value according to successfully changed window scaling
10872   setup.window_scaling_percent = video.window_scaling_percent;
10873 }
10874
10875 void ChangeVsyncModeIfNeeded(void)
10876 {
10877   int setup_vsync_mode = VSYNC_MODE_STR_TO_INT(setup.vsync_mode);
10878   int video_vsync_mode = video.vsync_mode;
10879
10880   // if setup and video vsync mode are already matching, nothing do do
10881   if (setup_vsync_mode == video_vsync_mode)
10882     return;
10883
10884   // if renderer is using OpenGL, vsync mode can directly be changed
10885   SDLSetScreenVsyncMode(setup.vsync_mode);
10886
10887   // if vsync mode unchanged, try re-creating renderer to set vsync mode
10888   if (video.vsync_mode == video_vsync_mode)
10889   {
10890     Bitmap *tmp_backbuffer = CreateBitmap(WIN_XSIZE, WIN_YSIZE, DEFAULT_DEPTH);
10891
10892     // save backbuffer content which gets lost when re-creating screen
10893     BlitBitmap(backbuffer, tmp_backbuffer, 0, 0, WIN_XSIZE, WIN_YSIZE, 0, 0);
10894
10895     // force re-creating screen and renderer to set new vsync mode
10896     video.fullscreen_enabled = !setup.fullscreen;
10897
10898     // when creating new renderer, destroy textures linked to old renderer
10899     FreeAllImageTextures();     // needs old renderer to free the textures
10900
10901     // re-create screen and renderer (including change of vsync mode)
10902     ChangeVideoModeIfNeeded(setup.fullscreen);
10903
10904     // set setup value according to successfully changed fullscreen mode
10905     setup.fullscreen = video.fullscreen_enabled;
10906
10907     // restore backbuffer content from temporary backbuffer backup bitmap
10908     BlitBitmap(tmp_backbuffer, backbuffer, 0, 0, WIN_XSIZE, WIN_YSIZE, 0, 0);
10909     FreeBitmap(tmp_backbuffer);
10910
10911     // update visible window/screen
10912     BlitBitmap(backbuffer, window, 0, 0, WIN_XSIZE, WIN_YSIZE, 0, 0);
10913
10914     // when changing vsync mode, re-create textures for new renderer
10915     InitImageTextures();
10916   }
10917
10918   // set setup value according to successfully changed vsync mode
10919   setup.vsync_mode = VSYNC_MODE_INT_TO_STR(video.vsync_mode);
10920 }
10921
10922 static void JoinRectangles(int *x, int *y, int *width, int *height,
10923                            int x2, int y2, int width2, int height2)
10924 {
10925   // do not join with "off-screen" rectangle
10926   if (x2 == -1 || y2 == -1)
10927     return;
10928
10929   *x = MIN(*x, x2);
10930   *y = MIN(*y, y2);
10931   *width = MAX(*width, width2);
10932   *height = MAX(*height, height2);
10933 }
10934
10935 void SetAnimStatus(int anim_status_new)
10936 {
10937   if (anim_status_new == GAME_MODE_MAIN)
10938     anim_status_new = GAME_MODE_PSEUDO_MAINONLY;
10939   else if (anim_status_new == GAME_MODE_NAMES)
10940     anim_status_new = GAME_MODE_PSEUDO_NAMESONLY;
10941   else if (anim_status_new == GAME_MODE_SCORES)
10942     anim_status_new = GAME_MODE_PSEUDO_SCORESOLD;
10943
10944   global.anim_status_next = anim_status_new;
10945
10946   // directly set screen modes that are entered without fading
10947   if ((global.anim_status      == GAME_MODE_PSEUDO_MAINONLY &&
10948        global.anim_status_next == GAME_MODE_PSEUDO_TYPENAME) ||
10949       (global.anim_status      == GAME_MODE_PSEUDO_TYPENAME &&
10950        global.anim_status_next == GAME_MODE_PSEUDO_MAINONLY) ||
10951       (global.anim_status      == GAME_MODE_PSEUDO_NAMESONLY &&
10952        global.anim_status_next == GAME_MODE_PSEUDO_TYPENAMES) ||
10953       (global.anim_status      == GAME_MODE_PSEUDO_TYPENAMES &&
10954        global.anim_status_next == GAME_MODE_PSEUDO_NAMESONLY))
10955     global.anim_status = global.anim_status_next;
10956 }
10957
10958 void SetGameStatus(int game_status_new)
10959 {
10960   if (game_status_new != game_status)
10961     game_status_last_screen = game_status;
10962
10963   game_status = game_status_new;
10964
10965   SetAnimStatus(game_status_new);
10966 }
10967
10968 void SetFontStatus(int game_status_new)
10969 {
10970   static int last_game_status = -1;
10971
10972   if (game_status_new != -1)
10973   {
10974     // set game status for font use after storing last game status
10975     last_game_status = game_status;
10976     game_status = game_status_new;
10977   }
10978   else
10979   {
10980     // reset game status after font use from last stored game status
10981     game_status = last_game_status;
10982   }
10983 }
10984
10985 void ResetFontStatus(void)
10986 {
10987   SetFontStatus(-1);
10988 }
10989
10990 void SetLevelSetInfo(char *identifier, int level_nr)
10991 {
10992   setString(&levelset.identifier, identifier);
10993
10994   levelset.level_nr = level_nr;
10995 }
10996
10997 boolean CheckIfAllViewportsHaveChanged(void)
10998 {
10999   // if game status has not changed, viewports have not changed either
11000   if (game_status == game_status_last)
11001     return FALSE;
11002
11003   // check if all viewports have changed with current game status
11004
11005   struct RectWithBorder *vp_playfield = &viewport.playfield[game_status];
11006   struct RectWithBorder *vp_door_1    = &viewport.door_1[game_status];
11007   struct RectWithBorder *vp_door_2    = &viewport.door_2[game_status];
11008   int new_real_sx       = vp_playfield->x;
11009   int new_real_sy       = vp_playfield->y;
11010   int new_full_sxsize   = vp_playfield->width;
11011   int new_full_sysize   = vp_playfield->height;
11012   int new_dx            = vp_door_1->x;
11013   int new_dy            = vp_door_1->y;
11014   int new_dxsize        = vp_door_1->width;
11015   int new_dysize        = vp_door_1->height;
11016   int new_vx            = vp_door_2->x;
11017   int new_vy            = vp_door_2->y;
11018   int new_vxsize        = vp_door_2->width;
11019   int new_vysize        = vp_door_2->height;
11020
11021   boolean playfield_viewport_has_changed =
11022     (new_real_sx != REAL_SX ||
11023      new_real_sy != REAL_SY ||
11024      new_full_sxsize != FULL_SXSIZE ||
11025      new_full_sysize != FULL_SYSIZE);
11026
11027   boolean door_1_viewport_has_changed =
11028     (new_dx != DX ||
11029      new_dy != DY ||
11030      new_dxsize != DXSIZE ||
11031      new_dysize != DYSIZE);
11032
11033   boolean door_2_viewport_has_changed =
11034     (new_vx != VX ||
11035      new_vy != VY ||
11036      new_vxsize != VXSIZE ||
11037      new_vysize != VYSIZE ||
11038      game_status_last == GAME_MODE_EDITOR);
11039
11040   return (playfield_viewport_has_changed &&
11041           door_1_viewport_has_changed &&
11042           door_2_viewport_has_changed);
11043 }
11044
11045 boolean CheckFadeAll(void)
11046 {
11047   return (CheckIfGlobalBorderHasChanged() ||
11048           CheckIfAllViewportsHaveChanged());
11049 }
11050
11051 void ChangeViewportPropertiesIfNeeded(void)
11052 {
11053   boolean use_mini_tilesize = (level.game_engine_type == GAME_ENGINE_TYPE_MM ?
11054                                FALSE : setup.small_game_graphics);
11055   int gfx_game_mode = getGlobalGameStatus(game_status);
11056   int gfx_game_mode2 = (gfx_game_mode == GAME_MODE_EDITOR ? GAME_MODE_DEFAULT :
11057                         gfx_game_mode);
11058   struct RectWithBorder *vp_window    = &viewport.window[gfx_game_mode];
11059   struct RectWithBorder *vp_playfield = &viewport.playfield[gfx_game_mode];
11060   struct RectWithBorder *vp_door_1    = &viewport.door_1[gfx_game_mode];
11061   struct RectWithBorder *vp_door_2    = &viewport.door_2[gfx_game_mode2];
11062   struct RectWithBorder *vp_door_3    = &viewport.door_2[GAME_MODE_EDITOR];
11063   int new_win_xsize     = vp_window->width;
11064   int new_win_ysize     = vp_window->height;
11065   int border_left       = vp_playfield->border_left;
11066   int border_right      = vp_playfield->border_right;
11067   int border_top        = vp_playfield->border_top;
11068   int border_bottom     = vp_playfield->border_bottom;
11069   int new_sx            = vp_playfield->x      + border_left;
11070   int new_sy            = vp_playfield->y      + border_top;
11071   int new_sxsize        = vp_playfield->width  - border_left - border_right;
11072   int new_sysize        = vp_playfield->height - border_top  - border_bottom;
11073   int new_real_sx       = vp_playfield->x;
11074   int new_real_sy       = vp_playfield->y;
11075   int new_full_sxsize   = vp_playfield->width;
11076   int new_full_sysize   = vp_playfield->height;
11077   int new_dx            = vp_door_1->x;
11078   int new_dy            = vp_door_1->y;
11079   int new_dxsize        = vp_door_1->width;
11080   int new_dysize        = vp_door_1->height;
11081   int new_vx            = vp_door_2->x;
11082   int new_vy            = vp_door_2->y;
11083   int new_vxsize        = vp_door_2->width;
11084   int new_vysize        = vp_door_2->height;
11085   int new_ex            = vp_door_3->x;
11086   int new_ey            = vp_door_3->y;
11087   int new_exsize        = vp_door_3->width;
11088   int new_eysize        = vp_door_3->height;
11089   int new_tilesize_var = (use_mini_tilesize ? MINI_TILESIZE : game.tile_size);
11090   int tilesize = (gfx_game_mode == GAME_MODE_PLAYING ? new_tilesize_var :
11091                   gfx_game_mode == GAME_MODE_EDITOR ? MINI_TILESIZE : TILESIZE);
11092   int new_scr_fieldx = new_sxsize / tilesize;
11093   int new_scr_fieldy = new_sysize / tilesize;
11094   int new_scr_fieldx_buffers = new_sxsize / new_tilesize_var;
11095   int new_scr_fieldy_buffers = new_sysize / new_tilesize_var;
11096   boolean init_gfx_buffers = FALSE;
11097   boolean init_video_buffer = FALSE;
11098   boolean init_gadgets_and_anims = FALSE;
11099   boolean init_bd_graphics = FALSE;
11100   boolean init_em_graphics = FALSE;
11101
11102   if (new_win_xsize != WIN_XSIZE ||
11103       new_win_ysize != WIN_YSIZE)
11104   {
11105     WIN_XSIZE = new_win_xsize;
11106     WIN_YSIZE = new_win_ysize;
11107
11108     init_video_buffer = TRUE;
11109     init_gfx_buffers = TRUE;
11110     init_gadgets_and_anims = TRUE;
11111
11112     // Debug("tools:viewport", "video: init_video_buffer, init_gfx_buffers");
11113   }
11114
11115   if (new_scr_fieldx != SCR_FIELDX ||
11116       new_scr_fieldy != SCR_FIELDY)
11117   {
11118     // this always toggles between MAIN and GAME when using small tile size
11119
11120     SCR_FIELDX = new_scr_fieldx;
11121     SCR_FIELDY = new_scr_fieldy;
11122
11123     // Debug("tools:viewport", "new_scr_fieldx != SCR_FIELDX ...");
11124   }
11125
11126   if (new_sx != SX ||
11127       new_sy != SY ||
11128       new_dx != DX ||
11129       new_dy != DY ||
11130       new_vx != VX ||
11131       new_vy != VY ||
11132       new_ex != EX ||
11133       new_ey != EY ||
11134       new_sxsize != SXSIZE ||
11135       new_sysize != SYSIZE ||
11136       new_dxsize != DXSIZE ||
11137       new_dysize != DYSIZE ||
11138       new_vxsize != VXSIZE ||
11139       new_vysize != VYSIZE ||
11140       new_exsize != EXSIZE ||
11141       new_eysize != EYSIZE ||
11142       new_real_sx != REAL_SX ||
11143       new_real_sy != REAL_SY ||
11144       new_full_sxsize != FULL_SXSIZE ||
11145       new_full_sysize != FULL_SYSIZE ||
11146       new_tilesize_var != TILESIZE_VAR
11147       )
11148   {
11149     // ------------------------------------------------------------------------
11150     // determine next fading area for changed viewport definitions
11151     // ------------------------------------------------------------------------
11152
11153     // start with current playfield area (default fading area)
11154     FADE_SX = REAL_SX;
11155     FADE_SY = REAL_SY;
11156     FADE_SXSIZE = FULL_SXSIZE;
11157     FADE_SYSIZE = FULL_SYSIZE;
11158
11159     // add new playfield area if position or size has changed
11160     if (new_real_sx != REAL_SX || new_real_sy != REAL_SY ||
11161         new_full_sxsize != FULL_SXSIZE || new_full_sysize != FULL_SYSIZE)
11162     {
11163       JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
11164                      new_real_sx, new_real_sy, new_full_sxsize,new_full_sysize);
11165     }
11166
11167     // add current and new door 1 area if position or size has changed
11168     if (new_dx != DX || new_dy != DY ||
11169         new_dxsize != DXSIZE || new_dysize != DYSIZE)
11170     {
11171       JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
11172                      DX, DY, DXSIZE, DYSIZE);
11173       JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
11174                      new_dx, new_dy, new_dxsize, new_dysize);
11175     }
11176
11177     // add current and new door 2 area if position or size has changed
11178     if (new_vx != VX || new_vy != VY ||
11179         new_vxsize != VXSIZE || new_vysize != VYSIZE)
11180     {
11181       JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
11182                      VX, VY, VXSIZE, VYSIZE);
11183       JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
11184                      new_vx, new_vy, new_vxsize, new_vysize);
11185     }
11186
11187     // ------------------------------------------------------------------------
11188     // handle changed tile size
11189     // ------------------------------------------------------------------------
11190
11191     if (new_tilesize_var != TILESIZE_VAR)
11192     {
11193       // Debug("tools:viewport", "new_tilesize_var != TILESIZE_VAR");
11194
11195       // changing tile size invalidates scroll values of engine snapshots
11196       FreeEngineSnapshotSingle();
11197
11198       // changing tile size requires update of graphic mapping for BD/EM engine
11199       init_bd_graphics = TRUE;
11200       init_em_graphics = TRUE;
11201     }
11202
11203     SX = new_sx;
11204     SY = new_sy;
11205     DX = new_dx;
11206     DY = new_dy;
11207     VX = new_vx;
11208     VY = new_vy;
11209     EX = new_ex;
11210     EY = new_ey;
11211     SXSIZE = new_sxsize;
11212     SYSIZE = new_sysize;
11213     DXSIZE = new_dxsize;
11214     DYSIZE = new_dysize;
11215     VXSIZE = new_vxsize;
11216     VYSIZE = new_vysize;
11217     EXSIZE = new_exsize;
11218     EYSIZE = new_eysize;
11219     REAL_SX = new_real_sx;
11220     REAL_SY = new_real_sy;
11221     FULL_SXSIZE = new_full_sxsize;
11222     FULL_SYSIZE = new_full_sysize;
11223     TILESIZE_VAR = new_tilesize_var;
11224
11225     init_gfx_buffers = TRUE;
11226     init_gadgets_and_anims = TRUE;
11227
11228     // Debug("tools:viewport", "viewports: init_gfx_buffers");
11229     // Debug("tools:viewport", "viewports: init_gadgets_and_anims");
11230   }
11231
11232   if (init_gfx_buffers)
11233   {
11234     // Debug("tools:viewport", "init_gfx_buffers");
11235
11236     SCR_FIELDX = new_scr_fieldx_buffers;
11237     SCR_FIELDY = new_scr_fieldy_buffers;
11238
11239     InitGfxBuffers();
11240
11241     SCR_FIELDX = new_scr_fieldx;
11242     SCR_FIELDY = new_scr_fieldy;
11243
11244     SetDrawDeactivationMask(REDRAW_NONE);
11245     SetDrawBackgroundMask(REDRAW_FIELD);
11246   }
11247
11248   if (init_video_buffer)
11249   {
11250     // Debug("tools:viewport", "init_video_buffer");
11251
11252     FreeAllImageTextures();     // needs old renderer to free the textures
11253
11254     InitVideoBuffer(WIN_XSIZE, WIN_YSIZE, DEFAULT_DEPTH, setup.fullscreen);
11255     InitImageTextures();
11256   }
11257
11258   if (init_gadgets_and_anims)
11259   {
11260     // Debug("tools:viewport", "init_gadgets_and_anims");
11261
11262     InitGadgets();
11263     InitGlobalAnimations();
11264   }
11265
11266   if (init_bd_graphics)
11267   {
11268     InitGraphicInfo_BD();
11269   }
11270
11271   if (init_em_graphics)
11272   {
11273     InitGraphicInfo_EM();
11274   }
11275 }
11276
11277 void OpenURL(char *url)
11278 {
11279 #if SDL_VERSION_ATLEAST(2,0,14)
11280   SDL_OpenURL(url);
11281 #else
11282   Warn("SDL_OpenURL(\"%s\") not supported by SDL %d.%d.%d!",
11283        url, SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL);
11284   Warn("Please upgrade to at least SDL 2.0.14 for URL support!");
11285 #endif
11286 }
11287
11288 void OpenURLFromHash(SetupFileHash *hash, int hash_key)
11289 {
11290   OpenURL(getHashEntry(hash, int2str(hash_key, 0)));
11291 }
11292
11293 char *getCurrentLevelsetName(void)
11294 {
11295   return leveldir_current->name;
11296 }
11297
11298
11299 // ============================================================================
11300 // tests
11301 // ============================================================================
11302
11303 #if defined(PLATFORM_WINDOWS)
11304 /* FILETIME of Jan 1 1970 00:00:00. */
11305 static const unsigned __int64 epoch = ((unsigned __int64) 116444736000000000ULL);
11306
11307 /*
11308  * timezone information is stored outside the kernel so tzp isn't used anymore.
11309  *
11310  * Note: this function is not for Win32 high precision timing purpose. See
11311  * elapsed_time().
11312  */
11313 static int gettimeofday_windows(struct timeval * tp, struct timezone * tzp)
11314 {
11315   FILETIME    file_time;
11316   SYSTEMTIME  system_time;
11317   ULARGE_INTEGER ularge;
11318
11319   GetSystemTime(&system_time);
11320   SystemTimeToFileTime(&system_time, &file_time);
11321   ularge.LowPart = file_time.dwLowDateTime;
11322   ularge.HighPart = file_time.dwHighDateTime;
11323
11324   tp->tv_sec = (long) ((ularge.QuadPart - epoch) / 10000000L);
11325   tp->tv_usec = (long) (system_time.wMilliseconds * 1000);
11326
11327   return 0;
11328 }
11329 #endif
11330
11331 static char *test_init_uuid_random_function_simple(void)
11332 {
11333   static char seed_text[100];
11334   unsigned int seed = InitSimpleRandom(NEW_RANDOMIZE);
11335
11336   sprintf(seed_text, "%d", seed);
11337
11338   return seed_text;
11339 }
11340
11341 static char *test_init_uuid_random_function_better(void)
11342 {
11343   static char seed_text[100];
11344   struct timeval current_time;
11345
11346   gettimeofday(&current_time, NULL);
11347
11348   prng_seed_bytes(&current_time, sizeof(current_time));
11349
11350   sprintf(seed_text, "%ld.%ld",
11351           (long)current_time.tv_sec,
11352           (long)current_time.tv_usec);
11353
11354   return seed_text;
11355 }
11356
11357 #if defined(PLATFORM_WINDOWS)
11358 static char *test_init_uuid_random_function_better_windows(void)
11359 {
11360   static char seed_text[100];
11361   struct timeval current_time;
11362
11363   gettimeofday_windows(&current_time, NULL);
11364
11365   prng_seed_bytes(&current_time, sizeof(current_time));
11366
11367   sprintf(seed_text, "%ld.%ld",
11368           (long)current_time.tv_sec,
11369           (long)current_time.tv_usec);
11370
11371   return seed_text;
11372 }
11373 #endif
11374
11375 static unsigned int test_uuid_random_function_simple(int max)
11376 {
11377   return GetSimpleRandom(max);
11378 }
11379
11380 static unsigned int test_uuid_random_function_better(int max)
11381 {
11382   return (max > 0 ? prng_get_uint() % max : 0);
11383 }
11384
11385 #if defined(PLATFORM_WINDOWS)
11386 #define NUM_UUID_TESTS                  3
11387 #else
11388 #define NUM_UUID_TESTS                  2
11389 #endif
11390
11391 static void TestGeneratingUUIDs_RunTest(int nr, int always_seed, int num_uuids)
11392 {
11393   HashTable *hash_seeds =
11394     create_hashtable(get_hash_from_string, hash_key_strings_are_equal, free, NULL);
11395   HashTable *hash_uuids =
11396     create_hashtable(get_hash_from_string, hash_key_strings_are_equal, free, NULL);
11397   static char message[100];
11398   int i;
11399
11400   char *random_name = (nr == 0 ? "simple" : "better");
11401   char *random_type = (always_seed ? "always" : "only once");
11402   char *(*init_random_function)(void) =
11403     (nr == 0 ?
11404      test_init_uuid_random_function_simple :
11405      test_init_uuid_random_function_better);
11406   unsigned int (*random_function)(int) =
11407     (nr == 0 ?
11408      test_uuid_random_function_simple :
11409      test_uuid_random_function_better);
11410   int xpos = 40;
11411
11412 #if defined(PLATFORM_WINDOWS)
11413   if (nr == 2)
11414   {
11415     random_name = "windows";
11416     init_random_function = test_init_uuid_random_function_better_windows;
11417   }
11418 #endif
11419
11420   ClearField();
11421
11422   DrawTextF(xpos, 40, FC_GREEN, "Test: Generating UUIDs");
11423   DrawTextF(xpos, 80, FC_YELLOW, "Test %d.%d:", nr + 1, always_seed + 1);
11424
11425   DrawTextF(xpos, 100, FC_YELLOW, "Random Generator Name: %s", random_name);
11426   DrawTextF(xpos, 120, FC_YELLOW, "Seeding Random Generator: %s", random_type);
11427   DrawTextF(xpos, 140, FC_YELLOW, "Number of UUIDs generated: %d", num_uuids);
11428
11429   DrawTextF(xpos, 180, FC_GREEN, "Please wait ...");
11430
11431   BackToFront();
11432
11433   // always initialize random number generator at least once
11434   init_random_function();
11435
11436   unsigned int time_start = SDL_GetTicks();
11437
11438   for (i = 0; i < num_uuids; i++)
11439   {
11440     if (always_seed)
11441     {
11442       char *seed = getStringCopy(init_random_function());
11443
11444       hashtable_remove(hash_seeds, seed);
11445       hashtable_insert(hash_seeds, seed, "1");
11446     }
11447
11448     char *uuid = getStringCopy(getUUIDExt(random_function));
11449
11450     hashtable_remove(hash_uuids, uuid);
11451     hashtable_insert(hash_uuids, uuid, "1");
11452   }
11453
11454   int num_unique_seeds = hashtable_count(hash_seeds);
11455   int num_unique_uuids = hashtable_count(hash_uuids);
11456
11457   unsigned int time_needed = SDL_GetTicks() - time_start;
11458
11459   DrawTextF(xpos, 220, FC_YELLOW, "Time needed: %d ms", time_needed);
11460
11461   DrawTextF(xpos, 240, FC_YELLOW, "Number of unique UUIDs: %d", num_unique_uuids);
11462
11463   if (always_seed)
11464     DrawTextF(xpos, 260, FC_YELLOW, "Number of unique seeds: %d", num_unique_seeds);
11465
11466   if (nr == NUM_UUID_TESTS - 1 && always_seed)
11467     DrawTextF(xpos, 300, FC_GREEN, "All tests done!");
11468   else
11469     DrawTextF(xpos, 300, FC_GREEN, "Confirm dialog for next test ...");
11470
11471   sprintf(message, "Test %d.%d finished!", nr + 1, always_seed + 1);
11472
11473   Request(message, REQ_CONFIRM);
11474
11475   hashtable_destroy(hash_seeds);
11476   hashtable_destroy(hash_uuids);
11477 }
11478
11479 void TestGeneratingUUIDs(void)
11480 {
11481   int num_uuids = 1000000;
11482   int i, j;
11483
11484   for (i = 0; i < NUM_UUID_TESTS; i++)
11485     for (j = 0; j < 2; j++)
11486       TestGeneratingUUIDs_RunTest(i, j, num_uuids);
11487
11488   CloseAllAndExit(0);
11489 }