src/tools.c

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