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_EM)
 504     RedrawPlayfield_EM(TRUE);
 505   else if (level.game_engine_type == GAME_ENGINE_TYPE_SP)
 506     RedrawPlayfield_SP(TRUE);
 507   else if (level.game_engine_type == GAME_ENGINE_TYPE_MM)
 508     RedrawPlayfield_MM();
 509   else if (level.game_engine_type == GAME_ENGINE_TYPE_RND)
 510     RedrawPlayfield_RND();
 511
 512   BlitScreenToBitmap(backbuffer);
 513
 514   BlitBitmap(drawto, window, gfx.sx, gfx.sy, gfx.sxsize, gfx.sysize,
 515              gfx.sx, gfx.sy);
 516 }
 517
 518 static void DrawMaskedBorderExt_Rect(int x, int y, int width, int height,
 519                                      int draw_target)
 520 {
 521   Bitmap *src_bitmap = getGlobalBorderBitmapFromStatus(global.border_status);
 522   Bitmap *dst_bitmap = gfx.masked_border_bitmap_ptr;
 523
 524   // may happen for "border.draw_masked.*" with undefined "global.border.*"
 525   if (src_bitmap == NULL)
 526     return;
 527
 528   if (x == -1 && y == -1)
 529     return;
 530
 531   if (draw_target == DRAW_TO_SCREEN)
 532     BlitToScreenMasked(src_bitmap, x, y, width, height, x, y);
 533   else
 534     BlitBitmapMasked(src_bitmap, dst_bitmap, x, y, width, height, x, y);
 535 }
 536
 537 static void DrawMaskedBorderExt_FIELD(int draw_target)
 538 {
 539   if (global.border_status >= GAME_MODE_MAIN &&
 540       global.border_status <= GAME_MODE_PLAYING &&
 541       border.draw_masked[global.border_status])
 542     DrawMaskedBorderExt_Rect(REAL_SX, REAL_SY, FULL_SXSIZE, FULL_SYSIZE,
 543                              draw_target);
 544 }
 545
 546 static void DrawMaskedBorderExt_DOOR_1(int draw_target)
 547 {
 548   // when drawing to backbuffer, never draw border over open doors
 549   if (draw_target == DRAW_TO_BACKBUFFER &&
 550       (GetDoorState() & DOOR_OPEN_1))
 551     return;
 552
 553   if (border.draw_masked[GFX_SPECIAL_ARG_DOOR] &&
 554       (global.border_status != GAME_MODE_EDITOR ||
 555        border.draw_masked[GFX_SPECIAL_ARG_EDITOR]))
 556     DrawMaskedBorderExt_Rect(DX, DY, DXSIZE, DYSIZE, draw_target);
 557 }
 558
 559 static void DrawMaskedBorderExt_DOOR_2(int draw_target)
 560 {
 561   // when drawing to backbuffer, never draw border over open doors
 562   if (draw_target == DRAW_TO_BACKBUFFER &&
 563       (GetDoorState() & DOOR_OPEN_2))
 564     return;
 565
 566   if (border.draw_masked[GFX_SPECIAL_ARG_DOOR] &&
 567       global.border_status != GAME_MODE_EDITOR)
 568     DrawMaskedBorderExt_Rect(VX, VY, VXSIZE, VYSIZE, draw_target);
 569 }
 570
 571 static void DrawMaskedBorderExt_DOOR_3(int draw_target)
 572 {
 573   // currently not available
 574 }
 575
 576 static void DrawMaskedBorderExt_ALL(int draw_target)
 577 {
 578   DrawMaskedBorderExt_FIELD(draw_target);
 579   DrawMaskedBorderExt_DOOR_1(draw_target);
 580   DrawMaskedBorderExt_DOOR_2(draw_target);
 581   DrawMaskedBorderExt_DOOR_3(draw_target);
 582 }
 583
 584 static void DrawMaskedBorderExt(int redraw_mask, int draw_target)
 585 {
 586   // never draw masked screen borders on borderless screens
 587   if (global.border_status == GAME_MODE_LOADING ||
 588       global.border_status == GAME_MODE_TITLE)
 589     return;
 590
 591   if (redraw_mask & REDRAW_ALL)
 592     DrawMaskedBorderExt_ALL(draw_target);
 593   else
 594   {
 595     if (redraw_mask & REDRAW_FIELD)
 596       DrawMaskedBorderExt_FIELD(draw_target);
 597     if (redraw_mask & REDRAW_DOOR_1)
 598       DrawMaskedBorderExt_DOOR_1(draw_target);
 599     if (redraw_mask & REDRAW_DOOR_2)
 600       DrawMaskedBorderExt_DOOR_2(draw_target);
 601     if (redraw_mask & REDRAW_DOOR_3)
 602       DrawMaskedBorderExt_DOOR_3(draw_target);
 603   }
 604 }
 605
 606 void DrawMaskedBorder_FIELD(void)
 607 {
 608   DrawMaskedBorderExt_FIELD(DRAW_TO_BACKBUFFER);
 609 }
 610
 611 void DrawMaskedBorder(int redraw_mask)
 612 {
 613   DrawMaskedBorderExt(redraw_mask, DRAW_TO_BACKBUFFER);
 614 }
 615
 616 void DrawMaskedBorderToTarget(int draw_target)
 617 {
 618   if (draw_target == DRAW_TO_BACKBUFFER ||
 619       draw_target == DRAW_TO_SCREEN)
 620   {
 621     DrawMaskedBorderExt(REDRAW_ALL, draw_target);
 622   }
 623   else
 624   {
 625     int last_border_status = global.border_status;
 626
 627     if (draw_target == DRAW_TO_FADE_SOURCE)
 628     {
 629       global.border_status = gfx.fade_border_source_status;
 630       gfx.masked_border_bitmap_ptr = gfx.fade_bitmap_source;
 631     }
 632     else if (draw_target == DRAW_TO_FADE_TARGET)
 633     {
 634       global.border_status = gfx.fade_border_target_status;
 635       gfx.masked_border_bitmap_ptr = gfx.fade_bitmap_target;
 636     }
 637
 638     // always use global border for PLAYING when restarting the game
 639     if (global.border_status == GAME_MODE_PSEUDO_RESTARTING)
 640       global.border_status = GAME_MODE_PLAYING;
 641
 642     DrawMaskedBorderExt(REDRAW_ALL, draw_target);
 643
 644     global.border_status = last_border_status;
 645     gfx.masked_border_bitmap_ptr = backbuffer;
 646   }
 647 }
 648
 649 void DrawTileCursor(int draw_target)
 650 {
 651   DrawTileCursor_MM(draw_target, game_status == GAME_MODE_PLAYING);
 652 }
 653
 654 void BlitScreenToBitmapExt_RND(Bitmap *target_bitmap, int fx, int fy)
 655 {
 656   BlitBitmap(drawto_field, target_bitmap, fx, fy, SXSIZE, SYSIZE, SX, SY);
 657 }
 658
 659 void BlitScreenToBitmap_RND(Bitmap *target_bitmap)
 660 {
 661   int fx = getFieldbufferOffsetX_RND(ScreenMovDir, ScreenGfxPos);
 662   int fy = getFieldbufferOffsetY_RND(ScreenMovDir, ScreenGfxPos);
 663
 664   BlitScreenToBitmapExt_RND(target_bitmap, fx, fy);
 665 }
 666
 667 void BlitScreenToBitmap(Bitmap *target_bitmap)
 668 {
 669   if (level.game_engine_type == GAME_ENGINE_TYPE_EM)
 670     BlitScreenToBitmap_EM(target_bitmap);
 671   else if (level.game_engine_type == GAME_ENGINE_TYPE_SP)
 672     BlitScreenToBitmap_SP(target_bitmap);
 673   else if (level.game_engine_type == GAME_ENGINE_TYPE_MM)
 674     BlitScreenToBitmap_MM(target_bitmap);
 675   else if (level.game_engine_type == GAME_ENGINE_TYPE_RND)
 676     BlitScreenToBitmap_RND(target_bitmap);
 677
 678   redraw_mask |= REDRAW_FIELD;
 679 }
 680
 681 static void DrawFramesPerSecond(void)
 682 {
 683   char text[100];
 684   int font_nr = FONT_TEXT_2;
 685   int font_width = getFontWidth(font_nr);
 686   int draw_deactivation_mask = GetDrawDeactivationMask();
 687   boolean draw_masked = (draw_deactivation_mask == REDRAW_NONE);
 688
 689   // draw FPS with leading space (needed if field buffer deactivated)
 690   sprintf(text, " %04.1f fps", global.frames_per_second);
 691
 692   // override draw deactivation mask (required for invisible warp mode)
 693   SetDrawDeactivationMask(REDRAW_NONE);
 694
 695   // draw opaque FPS if field buffer deactivated, else draw masked FPS
 696   DrawTextExt(backbuffer, SX + SXSIZE - font_width * strlen(text), SY, text,
 697               font_nr, (draw_masked ? BLIT_MASKED : BLIT_OPAQUE));
 698
 699   // set draw deactivation mask to previous value
 700   SetDrawDeactivationMask(draw_deactivation_mask);
 701
 702   // force full-screen redraw in this frame
 703   redraw_mask = REDRAW_ALL;
 704 }
 705
 706 #if DEBUG_FRAME_TIME
 707 static void PrintFrameTimeDebugging(void)
 708 {
 709   static unsigned int last_counter = 0;
 710   unsigned int counter = Counter();
 711   int diff_1 = counter - last_counter;
 712   int diff_2 = diff_1 - GAME_FRAME_DELAY;
 713   int diff_2_max = 20;
 714   int diff_2_cut = MIN(ABS(diff_2), diff_2_max);
 715   char diff_bar[2 * diff_2_max + 5];
 716   int pos = 0;
 717   int i;
 718
 719   diff_bar[pos++] = (diff_2 < -diff_2_max ? '<' : ' ');
 720
 721   for (i = 0; i < diff_2_max; i++)
 722     diff_bar[pos++] = (diff_2 >= 0 ? ' ' :
 723                        i >= diff_2_max - diff_2_cut ? '-' : ' ');
 724
 725   diff_bar[pos++] = '|';
 726
 727   for (i = 0; i < diff_2_max; i++)
 728     diff_bar[pos++] = (diff_2 <= 0 ? ' ' : i < diff_2_cut ? '+' : ' ');
 729
 730   diff_bar[pos++] = (diff_2 > diff_2_max ? '>' : ' ');
 731
 732   diff_bar[pos++] = '\0';
 733
 734   Debug("time:frame", "%06d [%02d] [%c%02d] %s",
 735         counter,
 736         diff_1,
 737         (diff_2 < 0 ? '-' : diff_2 > 0 ? '+' : ' '), ABS(diff_2),
 738         diff_bar);
 739
 740   last_counter = counter;
 741 }
 742 #endif
 743
 744 static int unifiedRedrawMask(int mask)
 745 {
 746   if (mask & REDRAW_ALL)
 747     return REDRAW_ALL;
 748
 749   if (mask & REDRAW_FIELD && mask & REDRAW_DOORS)
 750     return REDRAW_ALL;
 751
 752   return mask;
 753 }
 754
 755 static boolean equalRedrawMasks(int mask_1, int mask_2)
 756 {
 757   return unifiedRedrawMask(mask_1) == unifiedRedrawMask(mask_2);
 758 }
 759
 760 void BackToFront(void)
 761 {
 762   static int last_redraw_mask = REDRAW_NONE;
 763
 764   // force screen redraw in every frame to continue drawing global animations
 765   // (but always use the last redraw mask to prevent unwanted side effects)
 766   if (redraw_mask == REDRAW_NONE)
 767     redraw_mask = last_redraw_mask;
 768
 769   last_redraw_mask = redraw_mask;
 770
 771 #if 1
 772   // masked border now drawn immediately when blitting backbuffer to window
 773 #else
 774   // draw masked border to all viewports, if defined
 775   DrawMaskedBorder(redraw_mask);
 776 #endif
 777
 778   // draw frames per second (only if debug mode is enabled)
 779   if (redraw_mask & REDRAW_FPS)
 780     DrawFramesPerSecond();
 781
 782   // remove playfield redraw before potentially merging with doors redraw
 783   if (DrawingDeactivated(REAL_SX, REAL_SY))
 784     redraw_mask &= ~REDRAW_FIELD;
 785
 786   // redraw complete window if both playfield and (some) doors need redraw
 787   if (redraw_mask & REDRAW_FIELD && redraw_mask & REDRAW_DOORS)
 788     redraw_mask = REDRAW_ALL;
 789
 790   /* although redrawing the whole window would be fine for normal gameplay,
 791      being able to only redraw the playfield is required for deactivating
 792      certain drawing areas (mainly playfield) to work, which is needed for
 793      warp-forward to be fast enough (by skipping redraw of most frames) */
 794
 795   if (redraw_mask & REDRAW_ALL)
 796   {
 797     BlitBitmap(backbuffer, window, 0, 0, WIN_XSIZE, WIN_YSIZE, 0, 0);
 798   }
 799   else if (redraw_mask & REDRAW_FIELD)
 800   {
 801     BlitBitmap(backbuffer, window,
 802                REAL_SX, REAL_SY, FULL_SXSIZE, FULL_SYSIZE, REAL_SX, REAL_SY);
 803   }
 804   else if (redraw_mask & REDRAW_DOORS)
 805   {
 806     // merge door areas to prevent calling screen redraw more than once
 807     int x1 = WIN_XSIZE;
 808     int y1 = WIN_YSIZE;
 809     int x2 = 0;
 810     int y2 = 0;
 811
 812     if (redraw_mask & REDRAW_DOOR_1)
 813     {
 814       x1 = MIN(x1, DX);
 815       y1 = MIN(y1, DY);
 816       x2 = MAX(x2, DX + DXSIZE);
 817       y2 = MAX(y2, DY + DYSIZE);
 818     }
 819
 820     if (redraw_mask & REDRAW_DOOR_2)
 821     {
 822       x1 = MIN(x1, VX);
 823       y1 = MIN(y1, VY);
 824       x2 = MAX(x2, VX + VXSIZE);
 825       y2 = MAX(y2, VY + VYSIZE);
 826     }
 827
 828     if (redraw_mask & REDRAW_DOOR_3)
 829     {
 830       x1 = MIN(x1, EX);
 831       y1 = MIN(y1, EY);
 832       x2 = MAX(x2, EX + EXSIZE);
 833       y2 = MAX(y2, EY + EYSIZE);
 834     }
 835
 836     // make sure that at least one pixel is blitted, and inside the screen
 837     // (else nothing is blitted, causing the animations not to be updated)
 838     x1 = MIN(MAX(0, x1), WIN_XSIZE - 1);
 839     y1 = MIN(MAX(0, y1), WIN_YSIZE - 1);
 840     x2 = MIN(MAX(1, x2), WIN_XSIZE);
 841     y2 = MIN(MAX(1, y2), WIN_YSIZE);
 842
 843     BlitBitmap(backbuffer, window, x1, y1, x2 - x1, y2 - y1, x1, y1);
 844   }
 845
 846   redraw_mask = REDRAW_NONE;
 847
 848 #if DEBUG_FRAME_TIME
 849   PrintFrameTimeDebugging();
 850 #endif
 851 }
 852
 853 void BackToFront_WithFrameDelay(unsigned int frame_delay_value)
 854 {
 855   unsigned int frame_delay_value_old = GetVideoFrameDelay();
 856
 857   SetVideoFrameDelay(frame_delay_value);
 858
 859   BackToFront();
 860
 861   SetVideoFrameDelay(frame_delay_value_old);
 862 }
 863
 864 static int fade_type_skip = FADE_TYPE_NONE;
 865
 866 static void FadeExt(int fade_mask, int fade_mode, int fade_type)
 867 {
 868   void (*draw_border_function)(void) = NULL;
 869   int x, y, width, height;
 870   int fade_delay, post_delay;
 871
 872   if (fade_type == FADE_TYPE_FADE_OUT)
 873   {
 874     if (fade_type_skip != FADE_TYPE_NONE)
 875     {
 876       // skip all fade operations until specified fade operation
 877       if (fade_type & fade_type_skip)
 878         fade_type_skip = FADE_TYPE_NONE;
 879
 880       return;
 881     }
 882
 883     if (fading.fade_mode & FADE_TYPE_TRANSFORM)
 884       return;
 885   }
 886
 887   redraw_mask |= fade_mask;
 888
 889   if (fade_type == FADE_TYPE_SKIP)
 890   {
 891     fade_type_skip = fade_mode;
 892
 893     return;
 894   }
 895
 896   fade_delay = fading.fade_delay;
 897   post_delay = (fade_mode == FADE_MODE_FADE_OUT ? fading.post_delay : 0);
 898
 899   if (fade_type_skip != FADE_TYPE_NONE)
 900   {
 901     // skip all fade operations until specified fade operation
 902     if (fade_type & fade_type_skip)
 903       fade_type_skip = FADE_TYPE_NONE;
 904
 905     fade_delay = 0;
 906   }
 907
 908   if (global.autoplay_leveldir)
 909   {
 910     return;
 911   }
 912
 913   if (fade_mask == REDRAW_FIELD)
 914   {
 915     x = FADE_SX;
 916     y = FADE_SY;
 917     width  = FADE_SXSIZE;
 918     height = FADE_SYSIZE;
 919
 920     if (border.draw_masked_when_fading)
 921       draw_border_function = DrawMaskedBorder_FIELD;    // update when fading
 922     else
 923       DrawMaskedBorder_FIELD();                         // draw once
 924   }
 925   else          // REDRAW_ALL
 926   {
 927     x = 0;
 928     y = 0;
 929     width  = WIN_XSIZE;
 930     height = WIN_YSIZE;
 931   }
 932
 933   // when switching screens without fading, set fade delay to zero
 934   if (!setup.fade_screens || fading.fade_mode == FADE_MODE_NONE)
 935     fade_delay = 0;
 936
 937   // do not display black frame when fading out without fade delay
 938   if (fade_mode == FADE_MODE_FADE_OUT && fade_delay == 0)
 939     return;
 940
 941   FadeRectangle(x, y, width, height, fade_mode, fade_delay, post_delay,
 942                 draw_border_function);
 943
 944   redraw_mask &= ~fade_mask;
 945
 946   ClearAutoRepeatKeyEvents();
 947 }
 948
 949 static void SetScreenStates_BeforeFadingIn(void)
 950 {
 951   // temporarily set screen mode for animations to screen after fading in
 952   global.anim_status = global.anim_status_next;
 953
 954   // store backbuffer with all animations that will be started after fading in
 955   PrepareFadeBitmap(DRAW_TO_FADE_TARGET);
 956
 957   // set screen mode for animations back to fading
 958   global.anim_status = GAME_MODE_PSEUDO_FADING;
 959 }
 960
 961 static void SetScreenStates_AfterFadingIn(void)
 962 {
 963   // store new source screen (to use correct masked border for fading)
 964   gfx.fade_border_source_status = global.border_status;
 965
 966   global.anim_status = global.anim_status_next;
 967 }
 968
 969 static void SetScreenStates_BeforeFadingOut(void)
 970 {
 971   // store new target screen (to use correct masked border for fading)
 972   gfx.fade_border_target_status = game_status;
 973
 974   // set screen mode for animations to fading
 975   global.anim_status = GAME_MODE_PSEUDO_FADING;
 976
 977   // store backbuffer with all animations that will be stopped for fading out
 978   PrepareFadeBitmap(DRAW_TO_FADE_SOURCE);
 979 }
 980
 981 static void SetScreenStates_AfterFadingOut(void)
 982 {
 983   global.border_status = game_status;
 984
 985   // always use global border for PLAYING when restarting the game
 986   if (global.border_status == GAME_MODE_PSEUDO_RESTARTING)
 987     global.border_status = GAME_MODE_PLAYING;
 988 }
 989
 990 void FadeIn(int fade_mask)
 991 {
 992   SetScreenStates_BeforeFadingIn();
 993
 994 #if 1
 995   DrawMaskedBorder(REDRAW_ALL);
 996 #endif
 997
 998   if (fading.fade_mode & FADE_TYPE_TRANSFORM)
 999     FadeExt(fade_mask, fading.fade_mode, FADE_TYPE_FADE_IN);
1000   else
1001     FadeExt(fade_mask, FADE_MODE_FADE_IN, FADE_TYPE_FADE_IN);
1002
1003   FADE_SX = REAL_SX;
1004   FADE_SY = REAL_SY;
1005   FADE_SXSIZE = FULL_SXSIZE;
1006   FADE_SYSIZE = FULL_SYSIZE;
1007
1008   // activate virtual buttons depending on upcoming game status
1009   if (strEqual(setup.touch.control_type, TOUCH_CONTROL_VIRTUAL_BUTTONS) &&
1010       game_status == GAME_MODE_PLAYING && !tape.playing)
1011     SetOverlayActive(TRUE);
1012
1013   SetScreenStates_AfterFadingIn();
1014
1015   // force update of global animation status in case of rapid screen changes
1016   redraw_mask = REDRAW_ALL;
1017   BackToFront();
1018 }
1019
1020 void FadeOut(int fade_mask)
1021 {
1022   // update screen if areas covered by "fade_mask" and "redraw_mask" differ
1023   if (!equalRedrawMasks(fade_mask, redraw_mask) &&
1024       fade_type_skip != FADE_MODE_SKIP_FADE_OUT)
1025     BackToFront();
1026
1027   SetScreenStates_BeforeFadingOut();
1028
1029   SetTileCursorActive(FALSE);
1030   SetOverlayActive(FALSE);
1031
1032 #if 0
1033   DrawMaskedBorder(REDRAW_ALL);
1034 #endif
1035
1036   if (fading.fade_mode & FADE_TYPE_TRANSFORM)
1037     FadeExt(fade_mask, fading.fade_mode, FADE_TYPE_FADE_OUT);
1038   else
1039     FadeExt(fade_mask, FADE_MODE_FADE_OUT, FADE_TYPE_FADE_OUT);
1040
1041   SetScreenStates_AfterFadingOut();
1042 }
1043
1044 static void FadeSetLeaveNext(struct TitleFadingInfo fading_leave, boolean set)
1045 {
1046   static struct TitleFadingInfo fading_leave_stored;
1047
1048   if (set)
1049     fading_leave_stored = fading_leave;
1050   else
1051     fading = fading_leave_stored;
1052 }
1053
1054 void FadeSetEnterMenu(void)
1055 {
1056   fading = menu.enter_menu;
1057
1058   FadeSetLeaveNext(fading, TRUE);       // (keep same fade mode)
1059 }
1060
1061 void FadeSetLeaveMenu(void)
1062 {
1063   fading = menu.leave_menu;
1064
1065   FadeSetLeaveNext(fading, TRUE);       // (keep same fade mode)
1066 }
1067
1068 void FadeSetEnterScreen(void)
1069 {
1070   fading = menu.enter_screen[game_status];
1071
1072   FadeSetLeaveNext(menu.leave_screen[game_status], TRUE);       // store
1073 }
1074
1075 void FadeSetNextScreen(void)
1076 {
1077   fading = menu.next_screen[game_status];
1078
1079   // (do not overwrite fade mode set by FadeSetEnterScreen)
1080   // FadeSetLeaveNext(fading, TRUE);    // (keep same fade mode)
1081 }
1082
1083 void FadeSetLeaveScreen(void)
1084 {
1085   FadeSetLeaveNext(menu.leave_screen[game_status], FALSE);      // recall
1086 }
1087
1088 void FadeSetFromType(int type)
1089 {
1090   if (type & TYPE_ENTER_SCREEN)
1091     FadeSetEnterScreen();
1092   else if (type & TYPE_ENTER)
1093     FadeSetEnterMenu();
1094   else if (type & TYPE_LEAVE)
1095     FadeSetLeaveMenu();
1096 }
1097
1098 void FadeSetDisabled(void)
1099 {
1100   static struct TitleFadingInfo fading_none = { FADE_MODE_NONE, -1, -1, -1 };
1101
1102   fading = fading_none;
1103 }
1104
1105 void FadeSkipNextFadeIn(void)
1106 {
1107   FadeExt(0, FADE_MODE_SKIP_FADE_IN, FADE_TYPE_SKIP);
1108 }
1109
1110 void FadeSkipNextFadeOut(void)
1111 {
1112   FadeExt(0, FADE_MODE_SKIP_FADE_OUT, FADE_TYPE_SKIP);
1113 }
1114
1115 static int getGlobalGameStatus(int status)
1116 {
1117   return (status == GAME_MODE_PSEUDO_TYPENAME ? GAME_MODE_MAIN :
1118           status == GAME_MODE_SCOREINFO       ? GAME_MODE_SCORES :
1119           status);
1120 }
1121
1122 int getImageFromGraphicOrDefault(int graphic, int default_graphic)
1123 {
1124   if (graphic == IMG_UNDEFINED)
1125     return IMG_UNDEFINED;
1126
1127   boolean redefined = getImageListEntryFromImageID(graphic)->redefined;
1128
1129   return (graphic_info[graphic].bitmap != NULL || redefined ?
1130           graphic : default_graphic);
1131 }
1132
1133 static int getBackgroundImage(int graphic)
1134 {
1135   return getImageFromGraphicOrDefault(graphic, IMG_BACKGROUND);
1136 }
1137
1138 static int getGlobalBorderImage(int graphic)
1139 {
1140   return getImageFromGraphicOrDefault(graphic, IMG_GLOBAL_BORDER);
1141 }
1142
1143 Bitmap *getGlobalBorderBitmapFromStatus(int status_raw)
1144 {
1145   int status = getGlobalGameStatus(status_raw);
1146   int graphic =
1147     (status == GAME_MODE_MAIN    ? IMG_GLOBAL_BORDER_MAIN :
1148      status == GAME_MODE_SCORES  ? IMG_GLOBAL_BORDER_SCORES :
1149      status == GAME_MODE_EDITOR  ? IMG_GLOBAL_BORDER_EDITOR :
1150      status == GAME_MODE_PLAYING ? IMG_GLOBAL_BORDER_PLAYING :
1151      IMG_GLOBAL_BORDER);
1152   int graphic_final = getGlobalBorderImage(graphic);
1153
1154   return graphic_info[graphic_final].bitmap;
1155 }
1156
1157 void SetBackgroundImage(int graphic, int redraw_mask)
1158 {
1159   struct GraphicInfo *g = &graphic_info[graphic];
1160   struct GraphicInfo g_undefined = { 0 };
1161
1162   if (graphic == IMG_UNDEFINED)
1163     g = &g_undefined;
1164
1165   // always use original size bitmap for backgrounds, if existing
1166   Bitmap *bitmap = (g->bitmaps != NULL &&
1167                     g->bitmaps[IMG_BITMAP_PTR_ORIGINAL] != NULL ?
1168                     g->bitmaps[IMG_BITMAP_PTR_ORIGINAL] : g->bitmap);
1169
1170   // remove every mask before setting mask for window, and
1171   // remove window area mask before setting mask for main or door area
1172   int remove_mask = (redraw_mask == REDRAW_ALL ? 0xffff : REDRAW_ALL);
1173
1174   // (!!! TO BE FIXED: The whole REDRAW_* system really sucks! !!!)
1175   SetBackgroundBitmap(NULL, remove_mask, 0, 0, 0, 0);   // !!! FIX THIS !!!
1176   SetBackgroundBitmap(bitmap, redraw_mask,
1177                       g->src_x, g->src_y,
1178                       g->width, g->height);
1179 }
1180
1181 void SetWindowBackgroundImageIfDefined(int graphic)
1182 {
1183   if (graphic_info[graphic].bitmap)
1184     SetBackgroundImage(graphic, REDRAW_ALL);
1185 }
1186
1187 void SetMainBackgroundImageIfDefined(int graphic)
1188 {
1189   if (graphic_info[graphic].bitmap)
1190     SetBackgroundImage(graphic, REDRAW_FIELD);
1191 }
1192
1193 void SetDoorBackgroundImageIfDefined(int graphic)
1194 {
1195   if (graphic_info[graphic].bitmap)
1196     SetBackgroundImage(graphic, REDRAW_DOOR_1);
1197 }
1198
1199 void SetWindowBackgroundImage(int graphic)
1200 {
1201   SetBackgroundImage(getBackgroundImage(graphic), REDRAW_ALL);
1202 }
1203
1204 void SetMainBackgroundImage(int graphic)
1205 {
1206   SetBackgroundImage(getBackgroundImage(graphic), REDRAW_FIELD);
1207 }
1208
1209 void SetDoorBackgroundImage(int graphic)
1210 {
1211   SetBackgroundImage(getBackgroundImage(graphic), REDRAW_DOOR_1);
1212 }
1213
1214 void SetPanelBackground(void)
1215 {
1216   SetDoorBackgroundImage(IMG_BACKGROUND_PANEL);
1217 }
1218
1219 void DrawBackground(int x, int y, int width, int height)
1220 {
1221   // "drawto" might still point to playfield buffer here (hall of fame)
1222   ClearRectangleOnBackground(backbuffer, x, y, width, height);
1223
1224   if (IN_GFX_FIELD_FULL(x, y))
1225     redraw_mask |= REDRAW_FIELD;
1226   else if (IN_GFX_DOOR_1(x, y))
1227     redraw_mask |= REDRAW_DOOR_1;
1228   else if (IN_GFX_DOOR_2(x, y))
1229     redraw_mask |= REDRAW_DOOR_2;
1230   else if (IN_GFX_DOOR_3(x, y))
1231     redraw_mask |= REDRAW_DOOR_3;
1232 }
1233
1234 void DrawBackgroundForFont(int x, int y, int width, int height, int font_nr)
1235 {
1236   struct FontBitmapInfo *font = getFontBitmapInfo(font_nr);
1237
1238   if (font->bitmap == NULL)
1239     return;
1240
1241   DrawBackground(x, y, width, height);
1242 }
1243
1244 void DrawBackgroundForGraphic(int x, int y, int width, int height, int graphic)
1245 {
1246   struct GraphicInfo *g = &graphic_info[graphic];
1247
1248   if (g->bitmap == NULL)
1249     return;
1250
1251   DrawBackground(x, y, width, height);
1252 }
1253
1254 static int game_status_last = -1;
1255 static Bitmap *global_border_bitmap_last = NULL;
1256 static Bitmap *global_border_bitmap = NULL;
1257 static int real_sx_last = -1, real_sy_last = -1;
1258 static int full_sxsize_last = -1, full_sysize_last = -1;
1259 static int dx_last = -1, dy_last = -1;
1260 static int dxsize_last = -1, dysize_last = -1;
1261 static int vx_last = -1, vy_last = -1;
1262 static int vxsize_last = -1, vysize_last = -1;
1263 static int ex_last = -1, ey_last = -1;
1264 static int exsize_last = -1, eysize_last = -1;
1265
1266 boolean CheckIfGlobalBorderHasChanged(void)
1267 {
1268   // if game status has not changed, global border has not changed either
1269   if (game_status == game_status_last)
1270     return FALSE;
1271
1272   // determine and store new global border bitmap for current game status
1273   global_border_bitmap = getGlobalBorderBitmapFromStatus(game_status);
1274
1275   return (global_border_bitmap_last != global_border_bitmap);
1276 }
1277
1278 #define ONLY_REDRAW_GLOBAL_BORDER_IF_NEEDED             0
1279
1280 #if ONLY_REDRAW_GLOBAL_BORDER_IF_NEEDED
1281 static boolean CheckIfGlobalBorderRedrawIsNeeded(void)
1282 {
1283   // if game status has not changed, nothing has to be redrawn
1284   if (game_status == game_status_last)
1285     return FALSE;
1286
1287   // redraw if last screen was title screen
1288   if (game_status_last == GAME_MODE_TITLE)
1289     return TRUE;
1290
1291   // redraw if global screen border has changed
1292   if (CheckIfGlobalBorderHasChanged())
1293     return TRUE;
1294
1295   // redraw if position or size of playfield area has changed
1296   if (real_sx_last != REAL_SX || real_sy_last != REAL_SY ||
1297       full_sxsize_last != FULL_SXSIZE || full_sysize_last != FULL_SYSIZE)
1298     return TRUE;
1299
1300   // redraw if position or size of door area has changed
1301   if (dx_last != DX || dy_last != DY ||
1302       dxsize_last != DXSIZE || dysize_last != DYSIZE)
1303     return TRUE;
1304
1305   // redraw if position or size of tape area has changed
1306   if (vx_last != VX || vy_last != VY ||
1307       vxsize_last != VXSIZE || vysize_last != VYSIZE)
1308     return TRUE;
1309
1310   // redraw if position or size of editor area has changed
1311   if (ex_last != EX || ey_last != EY ||
1312       exsize_last != EXSIZE || eysize_last != EYSIZE)
1313     return TRUE;
1314
1315   return FALSE;
1316 }
1317 #endif
1318
1319 static void RedrawGlobalBorderFromBitmap(Bitmap *bitmap)
1320 {
1321   if (bitmap)
1322     BlitBitmap(bitmap, backbuffer, 0, 0, WIN_XSIZE, WIN_YSIZE, 0, 0);
1323   else
1324     ClearRectangle(backbuffer, 0, 0, WIN_XSIZE, WIN_YSIZE);
1325 }
1326
1327 void RedrawGlobalBorder(void)
1328 {
1329   Bitmap *bitmap = getGlobalBorderBitmapFromStatus(game_status);
1330
1331   RedrawGlobalBorderFromBitmap(bitmap);
1332
1333   redraw_mask = REDRAW_ALL;
1334 }
1335
1336 static void RedrawGlobalBorderIfNeeded(void)
1337 {
1338 #if ONLY_REDRAW_GLOBAL_BORDER_IF_NEEDED
1339   if (game_status == game_status_last)
1340     return;
1341 #endif
1342
1343   // copy current draw buffer to later copy back areas that have not changed
1344   if (game_status_last != GAME_MODE_TITLE)
1345     BlitBitmap(backbuffer, bitmap_db_store_1, 0, 0, WIN_XSIZE, WIN_YSIZE, 0, 0);
1346
1347 #if ONLY_REDRAW_GLOBAL_BORDER_IF_NEEDED
1348   if (CheckIfGlobalBorderRedrawIsNeeded())
1349 #else
1350   // determine and store new global border bitmap for current game status
1351   global_border_bitmap = getGlobalBorderBitmapFromStatus(game_status);
1352 #endif
1353   {
1354     // redraw global screen border (or clear, if defined to be empty)
1355     RedrawGlobalBorderFromBitmap(global_border_bitmap);
1356
1357     if (game_status == GAME_MODE_EDITOR)
1358       DrawSpecialEditorDoor();
1359
1360     // copy previous playfield and door areas, if they are defined on both
1361     // previous and current screen and if they still have the same size
1362
1363     if (real_sx_last != -1 && real_sy_last != -1 &&
1364         REAL_SX != -1 && REAL_SY != -1 &&
1365         full_sxsize_last == FULL_SXSIZE && full_sysize_last == FULL_SYSIZE)
1366       BlitBitmap(bitmap_db_store_1, backbuffer,
1367                  real_sx_last, real_sy_last, FULL_SXSIZE, FULL_SYSIZE,
1368                  REAL_SX, REAL_SY);
1369
1370     if (dx_last != -1 && dy_last != -1 &&
1371         DX != -1 && DY != -1 &&
1372         dxsize_last == DXSIZE && dysize_last == DYSIZE)
1373       BlitBitmap(bitmap_db_store_1, backbuffer,
1374                  dx_last, dy_last, DXSIZE, DYSIZE, DX, DY);
1375
1376     if (game_status != GAME_MODE_EDITOR)
1377     {
1378       if (vx_last != -1 && vy_last != -1 &&
1379           VX != -1 && VY != -1 &&
1380           vxsize_last == VXSIZE && vysize_last == VYSIZE)
1381         BlitBitmap(bitmap_db_store_1, backbuffer,
1382                    vx_last, vy_last, VXSIZE, VYSIZE, VX, VY);
1383     }
1384     else
1385     {
1386       if (ex_last != -1 && ey_last != -1 &&
1387           EX != -1 && EY != -1 &&
1388           exsize_last == EXSIZE && eysize_last == EYSIZE)
1389         BlitBitmap(bitmap_db_store_1, backbuffer,
1390                    ex_last, ey_last, EXSIZE, EYSIZE, EX, EY);
1391     }
1392
1393     redraw_mask = REDRAW_ALL;
1394   }
1395
1396   game_status_last = game_status;
1397
1398   global_border_bitmap_last = global_border_bitmap;
1399
1400   real_sx_last = REAL_SX;
1401   real_sy_last = REAL_SY;
1402   full_sxsize_last = FULL_SXSIZE;
1403   full_sysize_last = FULL_SYSIZE;
1404   dx_last = DX;
1405   dy_last = DY;
1406   dxsize_last = DXSIZE;
1407   dysize_last = DYSIZE;
1408   vx_last = VX;
1409   vy_last = VY;
1410   vxsize_last = VXSIZE;
1411   vysize_last = VYSIZE;
1412   ex_last = EX;
1413   ey_last = EY;
1414   exsize_last = EXSIZE;
1415   eysize_last = EYSIZE;
1416 }
1417
1418 void ClearField(void)
1419 {
1420   RedrawGlobalBorderIfNeeded();
1421
1422   // !!! "drawto" might still point to playfield buffer here (see above) !!!
1423   // (when entering hall of fame after playing)
1424   DrawBackground(REAL_SX, REAL_SY, FULL_SXSIZE, FULL_SYSIZE);
1425
1426   // !!! maybe this should be done before clearing the background !!!
1427   if (game_status == GAME_MODE_PLAYING)
1428   {
1429     ClearRectangle(fieldbuffer, 0, 0, FXSIZE, FYSIZE);
1430     SetDrawtoField(DRAW_TO_FIELDBUFFER);
1431   }
1432   else
1433   {
1434     SetDrawtoField(DRAW_TO_BACKBUFFER);
1435   }
1436 }
1437
1438 void MarkTileDirty(int x, int y)
1439 {
1440   redraw_mask |= REDRAW_FIELD;
1441 }
1442
1443 void SetBorderElement(void)
1444 {
1445   int x, y;
1446
1447   BorderElement = EL_EMPTY;
1448
1449   // only the R'n'D game engine may use an additional steelwall border
1450   if (level.game_engine_type != GAME_ENGINE_TYPE_RND)
1451     return;
1452
1453   for (y = 0; y < lev_fieldy && BorderElement == EL_EMPTY; y++)
1454   {
1455     for (x = 0; x < lev_fieldx; x++)
1456     {
1457       if (!IS_INDESTRUCTIBLE(Tile[x][y]))
1458         BorderElement = EL_STEELWALL;
1459
1460       if (y != 0 && y != lev_fieldy - 1 && x != lev_fieldx - 1)
1461         x = lev_fieldx - 2;
1462     }
1463   }
1464 }
1465
1466 void FloodFillLevelExt(int start_x, int start_y, int fill_element,
1467                        int max_array_fieldx, int max_array_fieldy,
1468                        short field[max_array_fieldx][max_array_fieldy],
1469                        int max_fieldx, int max_fieldy)
1470 {
1471   static struct XY stack_buffer[MAX_LEV_FIELDX * MAX_LEV_FIELDY];
1472   struct XY *check = xy_topdown;
1473   int old_element = field[start_x][start_y];
1474   int stack_pos = 0;
1475
1476   // do nothing if start field already has the desired content
1477   if (old_element == fill_element)
1478     return;
1479
1480   stack_buffer[stack_pos++] = (struct XY){ start_x, start_y };
1481
1482   while (stack_pos > 0)
1483   {
1484     struct XY current = stack_buffer[--stack_pos];
1485     int i;
1486
1487     field[current.x][current.y] = fill_element;
1488
1489     for (i = 0; i < 4; i++)
1490     {
1491       int x = current.x + check[i].x;
1492       int y = current.y + check[i].y;
1493
1494       // check for stack buffer overflow (should not happen)
1495       if (stack_pos >= MAX_LEV_FIELDX * MAX_LEV_FIELDY)
1496         Fail("Stack buffer overflow in 'FloodFillLevelExt()'. Please debug.");
1497
1498       if (IN_FIELD(x, y, max_fieldx, max_fieldy) && field[x][y] == old_element)
1499         stack_buffer[stack_pos++] = (struct XY){ x, y };
1500     }
1501   }
1502 }
1503
1504 void FloodFillLevel(int from_x, int from_y, int fill_element,
1505                     short field[MAX_LEV_FIELDX][MAX_LEV_FIELDY],
1506                     int max_fieldx, int max_fieldy)
1507 {
1508   FloodFillLevelExt(from_x, from_y, fill_element,
1509                     MAX_LEV_FIELDX, MAX_LEV_FIELDY, field,
1510                     max_fieldx, max_fieldy);
1511 }
1512
1513 void SetRandomAnimationValue(int x, int y)
1514 {
1515   gfx.anim_random_frame = GfxRandom[x][y];
1516 }
1517
1518 int getGraphicAnimationFrame(int graphic, int sync_frame)
1519 {
1520   // animation synchronized with global frame counter, not move position
1521   if (graphic_info[graphic].anim_global_sync || sync_frame < 0)
1522     sync_frame = FrameCounter;
1523   else if (graphic_info[graphic].anim_global_anim_sync)
1524     sync_frame = getGlobalAnimSyncFrame();
1525
1526   return getAnimationFrame(graphic_info[graphic].anim_frames,
1527                            graphic_info[graphic].anim_delay,
1528                            graphic_info[graphic].anim_mode,
1529                            graphic_info[graphic].anim_start_frame,
1530                            sync_frame);
1531 }
1532
1533 int getGraphicAnimationFrameXY(int graphic, int lx, int ly)
1534 {
1535   if (graphic_info[graphic].anim_mode & ANIM_TILED)
1536   {
1537     struct GraphicInfo *g = &graphic_info[graphic];
1538     int xsize = MAX(1, g->anim_frames_per_line);
1539     int ysize = MAX(1, g->anim_frames / xsize);
1540     int xoffset = g->anim_start_frame % xsize;
1541     int yoffset = g->anim_start_frame % ysize;
1542     // may be needed if screen field is significantly larger than playfield
1543     int x = (lx + xoffset + SCR_FIELDX * xsize) % xsize;
1544     int y = (ly + yoffset + SCR_FIELDY * ysize) % ysize;
1545     int sync_frame = y * xsize + x;
1546
1547     return sync_frame % g->anim_frames;
1548   }
1549   else if (graphic_info[graphic].anim_mode & ANIM_RANDOM_STATIC)
1550   {
1551     struct GraphicInfo *g = &graphic_info[graphic];
1552     // may be needed if screen field is significantly larger than playfield
1553     int x = (lx + SCR_FIELDX * lev_fieldx) % lev_fieldx;
1554     int y = (ly + SCR_FIELDY * lev_fieldy) % lev_fieldy;
1555     int sync_frame = GfxRandomStatic[x][y];
1556
1557     return sync_frame % g->anim_frames;
1558   }
1559   else
1560   {
1561     int sync_frame = (IN_LEV_FIELD(lx, ly) ? GfxFrame[lx][ly] : -1);
1562
1563     return getGraphicAnimationFrame(graphic, sync_frame);
1564   }
1565 }
1566
1567 void getGraphicSourceBitmap(int graphic, int tilesize, Bitmap **bitmap)
1568 {
1569   struct GraphicInfo *g = &graphic_info[graphic];
1570   int tilesize_capped = MIN(MAX(1, tilesize), TILESIZE);
1571
1572   if (tilesize == gfx.standard_tile_size)
1573     *bitmap = g->bitmaps[IMG_BITMAP_STANDARD];
1574   else if (tilesize == game.tile_size)
1575     *bitmap = g->bitmaps[IMG_BITMAP_PTR_GAME];
1576   else
1577     *bitmap = g->bitmaps[IMG_BITMAP_1x1 - log_2(tilesize_capped)];
1578 }
1579
1580 void getGraphicSourceXY(int graphic, int frame, int *x, int *y,
1581                         boolean get_backside)
1582 {
1583   struct GraphicInfo *g = &graphic_info[graphic];
1584   int src_x = g->src_x + (get_backside ? g->offset2_x : 0);
1585   int src_y = g->src_y + (get_backside ? g->offset2_y : 0);
1586
1587   if (g->offset_y == 0)         // frames are ordered horizontally
1588   {
1589     int max_width = g->anim_frames_per_line * g->width;
1590     int pos = (src_y / g->height) * max_width + src_x + frame * g->offset_x;
1591
1592     *x = pos % max_width;
1593     *y = src_y % g->height + pos / max_width * g->height;
1594   }
1595   else if (g->offset_x == 0)    // frames are ordered vertically
1596   {
1597     int max_height = g->anim_frames_per_line * g->height;
1598     int pos = (src_x / g->width) * max_height + src_y + frame * g->offset_y;
1599
1600     *x = src_x % g->width + pos / max_height * g->width;
1601     *y = pos % max_height;
1602   }
1603   else                          // frames are ordered diagonally
1604   {
1605     *x = src_x + frame * g->offset_x;
1606     *y = src_y + frame * g->offset_y;
1607   }
1608 }
1609
1610 void getSizedGraphicSourceExt(int graphic, int frame, int tilesize,
1611                               Bitmap **bitmap, int *x, int *y,
1612                               boolean get_backside)
1613 {
1614   struct GraphicInfo *g = &graphic_info[graphic];
1615
1616   // if no graphics defined at all, use fallback graphics
1617   if (g->bitmaps == NULL)
1618     *g = graphic_info[IMG_CHAR_EXCLAM];
1619
1620   // if no in-game graphics defined, always use standard graphic size
1621   if (g->bitmaps[IMG_BITMAP_PTR_GAME] == NULL)
1622     tilesize = TILESIZE;
1623
1624   getGraphicSourceBitmap(graphic, tilesize, bitmap);
1625   getGraphicSourceXY(graphic, frame, x, y, get_backside);
1626
1627   *x = *x * tilesize / g->tile_size;
1628   *y = *y * tilesize / g->tile_size;
1629 }
1630
1631 void getSizedGraphicSource(int graphic, int frame, int tilesize,
1632                            Bitmap **bitmap, int *x, int *y)
1633 {
1634   getSizedGraphicSourceExt(graphic, frame, tilesize, bitmap, x, y, FALSE);
1635 }
1636
1637 void getFixedGraphicSource(int graphic, int frame,
1638                            Bitmap **bitmap, int *x, int *y)
1639 {
1640   getSizedGraphicSourceExt(graphic, frame, TILESIZE, bitmap, x, y, FALSE);
1641 }
1642
1643 void getMiniGraphicSource(int graphic, Bitmap **bitmap, int *x, int *y)
1644 {
1645   getSizedGraphicSource(graphic, 0, MINI_TILESIZE, bitmap, x, y);
1646 }
1647
1648 void getGlobalAnimGraphicSource(int graphic, int frame,
1649                                 Bitmap **bitmap, int *x, int *y)
1650 {
1651   struct GraphicInfo *g = &graphic_info[graphic];
1652
1653   // if no graphics defined at all, use fallback graphics
1654   if (g->bitmaps == NULL)
1655     *g = graphic_info[IMG_CHAR_EXCLAM];
1656
1657   // use original size graphics, if existing, else use standard size graphics
1658   if (g->bitmaps[IMG_BITMAP_PTR_ORIGINAL])
1659     *bitmap = g->bitmaps[IMG_BITMAP_PTR_ORIGINAL];
1660   else
1661     *bitmap = g->bitmaps[IMG_BITMAP_STANDARD];
1662
1663   getGraphicSourceXY(graphic, frame, x, y, FALSE);
1664 }
1665
1666 static void getGraphicSourceExt(int graphic, int frame, Bitmap **bitmap,
1667                                 int *x, int *y, boolean get_backside)
1668 {
1669   getSizedGraphicSourceExt(graphic, frame, TILESIZE_VAR, bitmap, x, y,
1670                            get_backside);
1671 }
1672
1673 void getGraphicSource(int graphic, int frame, Bitmap **bitmap, int *x, int *y)
1674 {
1675   getGraphicSourceExt(graphic, frame, bitmap, x, y, FALSE);
1676 }
1677
1678 void DrawGraphic(int x, int y, int graphic, int frame)
1679 {
1680 #if DEBUG
1681   if (!IN_SCR_FIELD(x, y))
1682   {
1683     Debug("draw:DrawGraphic", "x = %d, y = %d, graphic = %d", x, y, graphic);
1684     Debug("draw:DrawGraphic", "This should never happen!");
1685
1686     return;
1687   }
1688 #endif
1689
1690   DrawGraphicExt(drawto_field, FX + x * TILEX_VAR, FY + y * TILEY_VAR, graphic,
1691                  frame);
1692
1693   MarkTileDirty(x, y);
1694 }
1695
1696 void DrawFixedGraphic(int x, int y, int graphic, int frame)
1697 {
1698 #if DEBUG
1699   if (!IN_SCR_FIELD(x, y))
1700   {
1701     Debug("draw:DrawFixedGraphic", "x = %d, y = %d, graphic = %d",
1702           x, y, graphic);
1703     Debug("draw:DrawFixedGraphic", "This should never happen!");
1704
1705     return;
1706   }
1707 #endif
1708
1709   DrawFixedGraphicExt(drawto_field, FX + x * TILEX, FY + y * TILEY, graphic,
1710                       frame);
1711   MarkTileDirty(x, y);
1712 }
1713
1714 void DrawGraphicExt(DrawBuffer *dst_bitmap, int x, int y, int graphic,
1715                     int frame)
1716 {
1717   Bitmap *src_bitmap;
1718   int src_x, src_y;
1719
1720   getGraphicSource(graphic, frame, &src_bitmap, &src_x, &src_y);
1721
1722   BlitBitmap(src_bitmap, dst_bitmap, src_x, src_y, TILEX_VAR, TILEY_VAR, x, y);
1723 }
1724
1725 void DrawFixedGraphicExt(DrawBuffer *dst_bitmap, int x, int y, int graphic,
1726                          int frame)
1727 {
1728   Bitmap *src_bitmap;
1729   int src_x, src_y;
1730
1731   getFixedGraphicSource(graphic, frame, &src_bitmap, &src_x, &src_y);
1732   BlitBitmap(src_bitmap, dst_bitmap, src_x, src_y, TILEX, TILEY, x, y);
1733 }
1734
1735 void DrawGraphicThruMask(int x, int y, int graphic, int frame)
1736 {
1737 #if DEBUG
1738   if (!IN_SCR_FIELD(x, y))
1739   {
1740     Debug("draw:DrawGraphicThruMask", "x = %d, y = %d, graphic = %d",
1741           x, y, graphic);
1742     Debug("draw:DrawGraphicThruMask", "This should never happen!");
1743
1744     return;
1745   }
1746 #endif
1747
1748   DrawGraphicThruMaskExt(drawto_field, FX + x * TILEX_VAR, FY + y * TILEY_VAR,
1749                          graphic, frame);
1750
1751   MarkTileDirty(x, y);
1752 }
1753
1754 void DrawFixedGraphicThruMask(int x, int y, int graphic, int frame)
1755 {
1756 #if DEBUG
1757   if (!IN_SCR_FIELD(x, y))
1758   {
1759     Debug("draw:DrawFixedGraphicThruMask", "x = %d, y = %d, graphic = %d",
1760           x, y, graphic);
1761     Debug("draw:DrawFixedGraphicThruMask", "This should never happen!");
1762
1763     return;
1764   }
1765 #endif
1766
1767   DrawFixedGraphicThruMaskExt(drawto_field, FX + x * TILEX, FY + y * TILEY,
1768                               graphic, frame);
1769   MarkTileDirty(x, y);
1770 }
1771
1772 void DrawGraphicThruMaskExt(DrawBuffer *d, int dst_x, int dst_y, int graphic,
1773                             int frame)
1774 {
1775   Bitmap *src_bitmap;
1776   int src_x, src_y;
1777
1778   getGraphicSource(graphic, frame, &src_bitmap, &src_x, &src_y);
1779
1780   BlitBitmapMasked(src_bitmap, d, src_x, src_y, TILEX_VAR, TILEY_VAR,
1781                    dst_x, dst_y);
1782 }
1783
1784 void DrawFixedGraphicThruMaskExt(DrawBuffer *d, int dst_x, int dst_y,
1785                                  int graphic, int frame)
1786 {
1787   Bitmap *src_bitmap;
1788   int src_x, src_y;
1789
1790   getFixedGraphicSource(graphic, frame, &src_bitmap, &src_x, &src_y);
1791
1792   BlitBitmapMasked(src_bitmap, d, src_x, src_y, TILEX, TILEY,
1793                    dst_x, dst_y);
1794 }
1795
1796 void DrawSizedGraphic(int x, int y, int graphic, int frame, int tilesize)
1797 {
1798   DrawSizedGraphicExt(drawto, SX + x * tilesize, SY + y * tilesize, graphic,
1799                       frame, tilesize);
1800   MarkTileDirty(x / tilesize, y / tilesize);
1801 }
1802
1803 void DrawSizedGraphicThruMask(int x, int y, int graphic, int frame,
1804                               int tilesize)
1805 {
1806   DrawSizedGraphicThruMaskExt(drawto, SX + x * tilesize, SY + y * tilesize,
1807                               graphic, frame, tilesize);
1808   MarkTileDirty(x / tilesize, y / tilesize);
1809 }
1810
1811 void DrawSizedGraphicExt(DrawBuffer *d, int x, int y, int graphic, int frame,
1812                          int tilesize)
1813 {
1814   Bitmap *src_bitmap;
1815   int src_x, src_y;
1816
1817   getSizedGraphicSource(graphic, frame, tilesize, &src_bitmap, &src_x, &src_y);
1818   BlitBitmap(src_bitmap, d, src_x, src_y, tilesize, tilesize, x, y);
1819 }
1820
1821 void DrawSizedGraphicThruMaskExt(DrawBuffer *d, int x, int y, int graphic,
1822                                  int frame, int tilesize)
1823 {
1824   Bitmap *src_bitmap;
1825   int src_x, src_y;
1826
1827   getSizedGraphicSource(graphic, frame, tilesize, &src_bitmap, &src_x, &src_y);
1828   BlitBitmapMasked(src_bitmap, d, src_x, src_y, tilesize, tilesize, x, y);
1829 }
1830
1831 void DrawMiniGraphic(int x, int y, int graphic)
1832 {
1833   DrawMiniGraphicExt(drawto, SX + x * MINI_TILEX, SY + y * MINI_TILEY, graphic);
1834   MarkTileDirty(x / 2, y / 2);
1835 }
1836
1837 void DrawMiniGraphicExt(DrawBuffer *d, int x, int y, int graphic)
1838 {
1839   Bitmap *src_bitmap;
1840   int src_x, src_y;
1841
1842   getMiniGraphicSource(graphic, &src_bitmap, &src_x, &src_y);
1843   BlitBitmap(src_bitmap, d, src_x, src_y, MINI_TILEX, MINI_TILEY, x, y);
1844 }
1845
1846 static void DrawGraphicShiftedNormal(int x, int y, int dx, int dy,
1847                                      int graphic, int frame,
1848                                      int cut_mode, int mask_mode)
1849 {
1850   Bitmap *src_bitmap;
1851   int src_x, src_y;
1852   int dst_x, dst_y;
1853   int width = TILEX, height = TILEY;
1854   int cx = 0, cy = 0;
1855
1856   if (dx || dy)                 // shifted graphic
1857   {
1858     if (x < BX1)                // object enters playfield from the left
1859     {
1860       x = BX1;
1861       width = dx;
1862       cx = TILEX - dx;
1863       dx = 0;
1864     }
1865     else if (x > BX2)           // object enters playfield from the right
1866     {
1867       x = BX2;
1868       width = -dx;
1869       dx = TILEX + dx;
1870     }
1871     else if (x == BX1 && dx < 0) // object leaves playfield to the left
1872     {
1873       width += dx;
1874       cx = -dx;
1875       dx = 0;
1876     }
1877     else if (x == BX2 && dx > 0) // object leaves playfield to the right
1878       width -= dx;
1879     else if (dx)                // general horizontal movement
1880       MarkTileDirty(x + SIGN(dx), y);
1881
1882     if (y < BY1)                // object enters playfield from the top
1883     {
1884       if (cut_mode == CUT_BELOW) // object completely above top border
1885         return;
1886
1887       y = BY1;
1888       height = dy;
1889       cy = TILEY - dy;
1890       dy = 0;
1891     }
1892     else if (y > BY2)           // object enters playfield from the bottom
1893     {
1894       y = BY2;
1895       height = -dy;
1896       dy = TILEY + dy;
1897     }
1898     else if (y == BY1 && dy < 0) // object leaves playfield to the top
1899     {
1900       height += dy;
1901       cy = -dy;
1902       dy = 0;
1903     }
1904     else if (dy > 0 && cut_mode == CUT_ABOVE)
1905     {
1906       if (y == BY2)             // object completely above bottom border
1907         return;
1908
1909       height = dy;
1910       cy = TILEY - dy;
1911       dy = TILEY;
1912       MarkTileDirty(x, y + 1);
1913     }                           // object leaves playfield to the bottom
1914     else if (dy > 0 && (y == BY2 || cut_mode == CUT_BELOW))
1915       height -= dy;
1916     else if (dy)                // general vertical movement
1917       MarkTileDirty(x, y + SIGN(dy));
1918   }
1919
1920 #if DEBUG
1921   if (!IN_SCR_FIELD(x, y))
1922   {
1923     Debug("draw:DrawGraphicShiftedNormal", "x = %d, y = %d, graphic = %d",
1924           x, y, graphic);
1925     Debug("draw:DrawGraphicShiftedNormal", "This should never happen!");
1926
1927     return;
1928   }
1929 #endif
1930
1931   width = width * TILESIZE_VAR / TILESIZE;
1932   height = height * TILESIZE_VAR / TILESIZE;
1933   cx = cx * TILESIZE_VAR / TILESIZE;
1934   cy = cy * TILESIZE_VAR / TILESIZE;
1935   dx = dx * TILESIZE_VAR / TILESIZE;
1936   dy = dy * TILESIZE_VAR / TILESIZE;
1937
1938   if (width > 0 && height > 0)
1939   {
1940     getGraphicSource(graphic, frame, &src_bitmap, &src_x, &src_y);
1941
1942     src_x += cx;
1943     src_y += cy;
1944
1945     dst_x = FX + x * TILEX_VAR + dx;
1946     dst_y = FY + y * TILEY_VAR + dy;
1947
1948     if (mask_mode == USE_MASKING)
1949       BlitBitmapMasked(src_bitmap, drawto_field, src_x, src_y, width, height,
1950                        dst_x, dst_y);
1951     else
1952       BlitBitmap(src_bitmap, drawto_field, src_x, src_y, width, height,
1953                  dst_x, dst_y);
1954
1955     MarkTileDirty(x, y);
1956   }
1957 }
1958
1959 static void DrawGraphicShiftedDouble(int x, int y, int dx, int dy,
1960                                      int graphic, int frame,
1961                                      int cut_mode, int mask_mode)
1962 {
1963   Bitmap *src_bitmap;
1964   int src_x, src_y;
1965   int dst_x, dst_y;
1966   int width = TILEX_VAR, height = TILEY_VAR;
1967   int x1 = x;
1968   int y1 = y;
1969   int x2 = x + SIGN(dx);
1970   int y2 = y + SIGN(dy);
1971
1972   // movement with two-tile animations must be sync'ed with movement position,
1973   // not with current GfxFrame (which can be higher when using slow movement)
1974   int anim_pos = (dx ? ABS(dx) : ABS(dy));
1975   int anim_frames = graphic_info[graphic].anim_frames;
1976
1977   // (we also need anim_delay here for movement animations with less frames)
1978   int anim_delay = graphic_info[graphic].anim_delay;
1979   int sync_frame = anim_pos * anim_frames * anim_delay / TILESIZE;
1980
1981   boolean draw_start_tile = (cut_mode != CUT_ABOVE);    // only for falling!
1982   boolean draw_end_tile   = (cut_mode != CUT_BELOW);    // only for falling!
1983
1984   // re-calculate animation frame for two-tile movement animation
1985   frame = getGraphicAnimationFrame(graphic, sync_frame);
1986
1987   // check if movement start graphic inside screen area and should be drawn
1988   if (draw_start_tile && IN_SCR_FIELD(x1, y1))
1989   {
1990     getGraphicSourceExt(graphic, frame, &src_bitmap, &src_x, &src_y, TRUE);
1991
1992     dst_x = FX + x1 * TILEX_VAR;
1993     dst_y = FY + y1 * TILEY_VAR;
1994
1995     if (mask_mode == USE_MASKING)
1996       BlitBitmapMasked(src_bitmap, drawto_field, src_x, src_y, width, height,
1997                        dst_x, dst_y);
1998     else
1999       BlitBitmap(src_bitmap, drawto_field, src_x, src_y, width, height,
2000                  dst_x, dst_y);
2001
2002     MarkTileDirty(x1, y1);
2003   }
2004
2005   // check if movement end graphic inside screen area and should be drawn
2006   if (draw_end_tile && IN_SCR_FIELD(x2, y2))
2007   {
2008     getGraphicSourceExt(graphic, frame, &src_bitmap, &src_x, &src_y, FALSE);
2009
2010     dst_x = FX + x2 * TILEX_VAR;
2011     dst_y = FY + y2 * TILEY_VAR;
2012
2013     if (mask_mode == USE_MASKING)
2014       BlitBitmapMasked(src_bitmap, drawto_field, src_x, src_y, width, height,
2015                        dst_x, dst_y);
2016     else
2017       BlitBitmap(src_bitmap, drawto_field, src_x, src_y, width, height,
2018                  dst_x, dst_y);
2019
2020     MarkTileDirty(x2, y2);
2021   }
2022 }
2023
2024 static void DrawGraphicShifted(int x, int y, int dx, int dy,
2025                                int graphic, int frame,
2026                                int cut_mode, int mask_mode)
2027 {
2028   if (graphic < 0)
2029   {
2030     DrawGraphic(x, y, graphic, frame);
2031
2032     return;
2033   }
2034
2035   if (graphic_info[graphic].double_movement)    // EM style movement images
2036     DrawGraphicShiftedDouble(x, y, dx, dy, graphic, frame, cut_mode, mask_mode);
2037   else
2038     DrawGraphicShiftedNormal(x, y, dx, dy, graphic, frame, cut_mode, mask_mode);
2039 }
2040
2041 static void DrawGraphicShiftedThruMask(int x, int y, int dx, int dy,
2042                                        int graphic, int frame, int cut_mode)
2043 {
2044   DrawGraphicShifted(x, y, dx, dy, graphic, frame, cut_mode, USE_MASKING);
2045 }
2046
2047 void DrawScreenElementExt(int x, int y, int dx, int dy, int element,
2048                           int cut_mode, int mask_mode)
2049 {
2050   int lx = LEVELX(x), ly = LEVELY(y);
2051   int graphic;
2052   int frame;
2053
2054   if (IN_LEV_FIELD(lx, ly))
2055   {
2056     if (element == EL_EMPTY)
2057       element = GfxElementEmpty[lx][ly];
2058
2059     SetRandomAnimationValue(lx, ly);
2060
2061     graphic = el_act_dir2img(element, GfxAction[lx][ly], GfxDir[lx][ly]);
2062     frame = getGraphicAnimationFrameXY(graphic, lx, ly);
2063
2064     // do not use double (EM style) movement graphic when not moving
2065     if (graphic_info[graphic].double_movement && !dx && !dy)
2066     {
2067       graphic = el_act_dir2img(element, ACTION_DEFAULT, GfxDir[lx][ly]);
2068       frame = getGraphicAnimationFrameXY(graphic, lx, ly);
2069     }
2070
2071     if (game.use_masked_elements && (dx || dy))
2072       mask_mode = USE_MASKING;
2073   }
2074   else  // border element
2075   {
2076     graphic = el2img(element);
2077     frame = getGraphicAnimationFrameXY(graphic, lx, ly);
2078   }
2079
2080   if (element == EL_EXPANDABLE_WALL)
2081   {
2082     boolean left_stopped = FALSE, right_stopped = FALSE;
2083
2084     if (!IN_LEV_FIELD(lx - 1, ly) || IS_WALL(Tile[lx - 1][ly]))
2085       left_stopped = TRUE;
2086     if (!IN_LEV_FIELD(lx + 1, ly) || IS_WALL(Tile[lx + 1][ly]))
2087       right_stopped = TRUE;
2088
2089     if (left_stopped && right_stopped)
2090       graphic = IMG_WALL;
2091     else if (left_stopped)
2092     {
2093       graphic = IMG_EXPANDABLE_WALL_GROWING_RIGHT;
2094       frame = graphic_info[graphic].anim_frames - 1;
2095     }
2096     else if (right_stopped)
2097     {
2098       graphic = IMG_EXPANDABLE_WALL_GROWING_LEFT;
2099       frame = graphic_info[graphic].anim_frames - 1;
2100     }
2101   }
2102
2103   if (dx || dy)
2104     DrawGraphicShifted(x, y, dx, dy, graphic, frame, cut_mode, mask_mode);
2105   else if (mask_mode == USE_MASKING)
2106     DrawGraphicThruMask(x, y, graphic, frame);
2107   else
2108     DrawGraphic(x, y, graphic, frame);
2109 }
2110
2111 void DrawLevelElementExt(int x, int y, int dx, int dy, int element,
2112                          int cut_mode, int mask_mode)
2113 {
2114   if (IN_LEV_FIELD(x, y) && IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
2115     DrawScreenElementExt(SCREENX(x), SCREENY(y), dx, dy, element,
2116                          cut_mode, mask_mode);
2117 }
2118
2119 void DrawScreenElementShifted(int x, int y, int dx, int dy, int element,
2120                               int cut_mode)
2121 {
2122   DrawScreenElementExt(x, y, dx, dy, element, cut_mode, NO_MASKING);
2123 }
2124
2125 void DrawLevelElementShifted(int x, int y, int dx, int dy, int element,
2126                              int cut_mode)
2127 {
2128   DrawLevelElementExt(x, y, dx, dy, element, cut_mode, NO_MASKING);
2129 }
2130
2131 void DrawLevelElementThruMask(int x, int y, int element)
2132 {
2133   DrawLevelElementExt(x, y, 0, 0, element, NO_CUTTING, USE_MASKING);
2134 }
2135
2136 void DrawLevelFieldThruMask(int x, int y)
2137 {
2138   DrawLevelElementExt(x, y, 0, 0, Tile[x][y], NO_CUTTING, USE_MASKING);
2139 }
2140
2141 // !!! implementation of quicksand is totally broken !!!
2142 #define IS_CRUMBLED_TILE(x, y, e)                                       \
2143         (GFX_CRUMBLED(e) && (!IN_LEV_FIELD(x, y) ||                     \
2144                              !IS_MOVING(x, y) ||                        \
2145                              (e) == EL_QUICKSAND_EMPTYING ||            \
2146                              (e) == EL_QUICKSAND_FAST_EMPTYING))
2147
2148 static void DrawLevelFieldCrumbledInnerCorners(int x, int y, int dx, int dy,
2149                                                int graphic)
2150 {
2151   Bitmap *src_bitmap;
2152   int src_x, src_y;
2153   int width, height, cx, cy;
2154   int sx = SCREENX(x), sy = SCREENY(y);
2155   int crumbled_border_size = graphic_info[graphic].border_size;
2156   int crumbled_tile_size = graphic_info[graphic].tile_size;
2157   int crumbled_border_size_var =
2158     crumbled_border_size * TILESIZE_VAR / crumbled_tile_size;
2159   int i;
2160
2161   getGraphicSource(graphic, 0, &src_bitmap, &src_x, &src_y);
2162
2163   for (i = 1; i < 4; i++)
2164   {
2165     int dxx = (i & 1 ? dx : 0);
2166     int dyy = (i & 2 ? dy : 0);
2167     int xx = x + dxx;
2168     int yy = y + dyy;
2169     int element = (IN_LEV_FIELD(xx, yy) ? TILE_GFX_ELEMENT(xx, yy) :
2170                    BorderElement);
2171
2172     // check if neighbour field is of same crumble type
2173     boolean same = (IS_CRUMBLED_TILE(xx, yy, element) &&
2174                     graphic_info[graphic].class ==
2175                     graphic_info[el_act2crm(element, ACTION_DEFAULT)].class);
2176
2177     // return if check prevents inner corner
2178     if (same == (dxx == dx && dyy == dy))
2179       return;
2180   }
2181
2182   // if we reach this point, we have an inner corner
2183
2184   getGraphicSource(graphic, 1, &src_bitmap, &src_x, &src_y);
2185
2186   width  = crumbled_border_size_var;
2187   height = crumbled_border_size_var;
2188   cx = (dx > 0 ? TILESIZE_VAR - width  : 0);
2189   cy = (dy > 0 ? TILESIZE_VAR - height : 0);
2190
2191   if (game.use_masked_elements)
2192   {
2193     int graphic0 = el2img(EL_EMPTY);
2194     int frame0 = getGraphicAnimationFrameXY(graphic0, x, y);
2195     Bitmap *src_bitmap0;
2196     int src_x0, src_y0;
2197
2198     getGraphicSource(graphic0, frame0, &src_bitmap0, &src_x0, &src_y0);
2199
2200     BlitBitmap(src_bitmap0, drawto_field, src_x0 + cx, src_y0 + cy,
2201                width, height,
2202                FX + sx * TILEX_VAR + cx, FY + sy * TILEY_VAR + cy);
2203
2204     BlitBitmapMasked(src_bitmap, drawto_field, src_x + cx, src_y + cy,
2205                      width, height,
2206                      FX + sx * TILEX_VAR + cx, FY + sy * TILEY_VAR + cy);
2207   }
2208   else
2209     BlitBitmap(src_bitmap, drawto_field, src_x + cx, src_y + cy,
2210                width, height,
2211                FX + sx * TILEX_VAR + cx, FY + sy * TILEY_VAR + cy);
2212 }
2213
2214 static void DrawLevelFieldCrumbledBorders(int x, int y, int graphic, int frame,
2215                                           int dir)
2216 {
2217   Bitmap *src_bitmap;
2218   int src_x, src_y;
2219   int width, height, bx, by, cx, cy;
2220   int sx = SCREENX(x), sy = SCREENY(y);
2221   int crumbled_border_size = graphic_info[graphic].border_size;
2222   int crumbled_tile_size = graphic_info[graphic].tile_size;
2223   int crumbled_border_size_var =
2224     crumbled_border_size * TILESIZE_VAR / crumbled_tile_size;
2225   int crumbled_border_pos_var = TILESIZE_VAR - crumbled_border_size_var;
2226   int i;
2227
2228   getGraphicSource(graphic, frame, &src_bitmap, &src_x, &src_y);
2229
2230   // only needed when using masked elements
2231   int graphic0 = el2img(EL_EMPTY);
2232   int frame0 = getGraphicAnimationFrameXY(graphic0, x, y);
2233   Bitmap *src_bitmap0;
2234   int src_x0, src_y0;
2235
2236   if (game.use_masked_elements)
2237     getGraphicSource(graphic0, frame0, &src_bitmap0, &src_x0, &src_y0);
2238
2239   // draw simple, sloppy, non-corner-accurate crumbled border
2240
2241   width  = (dir == 1 || dir == 2 ? crumbled_border_size_var : TILESIZE_VAR);
2242   height = (dir == 0 || dir == 3 ? crumbled_border_size_var : TILESIZE_VAR);
2243   cx = (dir == 2 ? crumbled_border_pos_var : 0);
2244   cy = (dir == 3 ? crumbled_border_pos_var : 0);
2245
2246   if (game.use_masked_elements)
2247   {
2248     BlitBitmap(src_bitmap0, drawto_field, src_x0 + cx, src_y0 + cy,
2249                width, height,
2250                FX + sx * TILEX_VAR + cx,
2251                FY + sy * TILEY_VAR + cy);
2252
2253     BlitBitmapMasked(src_bitmap, drawto_field, src_x + cx, src_y + cy,
2254                      width, height,
2255                      FX + sx * TILEX_VAR + cx,
2256                      FY + sy * TILEY_VAR + cy);
2257   }
2258   else
2259     BlitBitmap(src_bitmap, drawto_field, src_x + cx, src_y + cy,
2260                width, height,
2261                FX + sx * TILEX_VAR + cx,
2262                FY + sy * TILEY_VAR + cy);
2263
2264   // (remaining middle border part must be at least as big as corner part)
2265   if (!(graphic_info[graphic].style & STYLE_ACCURATE_BORDERS) ||
2266       crumbled_border_size_var >= TILESIZE_VAR / 3)
2267     return;
2268
2269   // correct corners of crumbled border, if needed
2270
2271   for (i = -1; i <= 1; i += 2)
2272   {
2273     int xx = x + (dir == 0 || dir == 3 ? i : 0);
2274     int yy = y + (dir == 1 || dir == 2 ? i : 0);
2275     int element = (IN_LEV_FIELD(xx, yy) ? TILE_GFX_ELEMENT(xx, yy) :
2276                    BorderElement);
2277
2278     // check if neighbour field is of same crumble type
2279     if (IS_CRUMBLED_TILE(xx, yy, element) &&
2280         graphic_info[graphic].class ==
2281         graphic_info[el_act2crm(element, ACTION_DEFAULT)].class)
2282     {
2283       // no crumbled corner, but continued crumbled border
2284
2285       int c1 = (dir == 2 || dir == 3 ? crumbled_border_pos_var : 0);
2286       int c2 = (i == 1 ? crumbled_border_pos_var : 0);
2287       int b1 = (i == 1 ? crumbled_border_size_var :
2288                 TILESIZE_VAR - 2 * crumbled_border_size_var);
2289
2290       width  = crumbled_border_size_var;
2291       height = crumbled_border_size_var;
2292
2293       if (dir == 1 || dir == 2)
2294       {
2295         cx = c1;
2296         cy = c2;
2297         bx = cx;
2298         by = b1;
2299       }
2300       else
2301       {
2302         cx = c2;
2303         cy = c1;
2304         bx = b1;
2305         by = cy;
2306       }
2307
2308       if (game.use_masked_elements)
2309       {
2310         BlitBitmap(src_bitmap0, drawto_field, src_x0 + bx, src_y0 + by,
2311                    width, height,
2312                    FX + sx * TILEX_VAR + cx,
2313                    FY + sy * TILEY_VAR + cy);
2314
2315         BlitBitmapMasked(src_bitmap, drawto_field, src_x + bx, src_y + by,
2316                          width, height,
2317                          FX + sx * TILEX_VAR + cx,
2318                          FY + sy * TILEY_VAR + cy);
2319       }
2320       else
2321         BlitBitmap(src_bitmap, drawto_field, src_x + bx, src_y + by,
2322                    width, height,
2323                    FX + sx * TILEX_VAR + cx,
2324                    FY + sy * TILEY_VAR + cy);
2325     }
2326   }
2327 }
2328
2329 static void DrawLevelFieldCrumbledExt(int x, int y, int graphic, int frame)
2330 {
2331   int sx = SCREENX(x), sy = SCREENY(y);
2332   int element;
2333   int i;
2334   struct XY *xy = xy_topdown;
2335
2336   if (!IN_LEV_FIELD(x, y))
2337     return;
2338
2339   element = TILE_GFX_ELEMENT(x, y);
2340
2341   if (IS_CRUMBLED_TILE(x, y, element))          // crumble field itself
2342   {
2343     if (!IN_SCR_FIELD(sx, sy))
2344       return;
2345
2346     // crumble field borders towards direct neighbour fields
2347     for (i = 0; i < 4; i++)
2348     {
2349       int xx = x + xy[i].x;
2350       int yy = y + xy[i].y;
2351
2352       element = (IN_LEV_FIELD(xx, yy) ? TILE_GFX_ELEMENT(xx, yy) :
2353                  BorderElement);
2354
2355       // check if neighbour field is of same crumble type
2356       if (IS_CRUMBLED_TILE(xx, yy, element) &&
2357           graphic_info[graphic].class ==
2358           graphic_info[el_act2crm(element, ACTION_DEFAULT)].class)
2359         continue;
2360
2361       DrawLevelFieldCrumbledBorders(x, y, graphic, frame, i);
2362     }
2363
2364     // crumble inner field corners towards corner neighbour fields
2365     if ((graphic_info[graphic].style & STYLE_INNER_CORNERS) &&
2366         graphic_info[graphic].anim_frames == 2)
2367     {
2368       for (i = 0; i < 4; i++)
2369       {
2370         int dx = (i & 1 ? +1 : -1);
2371         int dy = (i & 2 ? +1 : -1);
2372
2373         DrawLevelFieldCrumbledInnerCorners(x, y, dx, dy, graphic);
2374       }
2375     }
2376
2377     MarkTileDirty(sx, sy);
2378   }
2379   else          // center field is not crumbled -- crumble neighbour fields
2380   {
2381     // crumble field borders of direct neighbour fields
2382     for (i = 0; i < 4; i++)
2383     {
2384       int xx = x + xy[i].x;
2385       int yy = y + xy[i].y;
2386       int sxx = sx + xy[i].x;
2387       int syy = sy + xy[i].y;
2388
2389       if (!IN_LEV_FIELD(xx, yy) ||
2390           !IN_SCR_FIELD(sxx, syy))
2391         continue;
2392
2393       // do not crumble fields that are being digged or snapped
2394       if (Tile[xx][yy] == EL_EMPTY ||
2395           Tile[xx][yy] == EL_ELEMENT_SNAPPING)
2396         continue;
2397
2398       element = TILE_GFX_ELEMENT(xx, yy);
2399
2400       if (!IS_CRUMBLED_TILE(xx, yy, element))
2401         continue;
2402
2403       graphic = el_act2crm(element, ACTION_DEFAULT);
2404
2405       DrawLevelFieldCrumbledBorders(xx, yy, graphic, 0, 3 - i);
2406
2407       MarkTileDirty(sxx, syy);
2408     }
2409
2410     // crumble inner field corners of corner neighbour fields
2411     for (i = 0; i < 4; i++)
2412     {
2413       int dx = (i & 1 ? +1 : -1);
2414       int dy = (i & 2 ? +1 : -1);
2415       int xx = x + dx;
2416       int yy = y + dy;
2417       int sxx = sx + dx;
2418       int syy = sy + dy;
2419
2420       if (!IN_LEV_FIELD(xx, yy) ||
2421           !IN_SCR_FIELD(sxx, syy))
2422         continue;
2423
2424       if (Tile[xx][yy] == EL_ELEMENT_SNAPPING)
2425         continue;
2426
2427       element = TILE_GFX_ELEMENT(xx, yy);
2428
2429       if (!IS_CRUMBLED_TILE(xx, yy, element))
2430         continue;
2431
2432       graphic = el_act2crm(element, ACTION_DEFAULT);
2433
2434       if ((graphic_info[graphic].style & STYLE_INNER_CORNERS) &&
2435           graphic_info[graphic].anim_frames == 2)
2436         DrawLevelFieldCrumbledInnerCorners(xx, yy, -dx, -dy, graphic);
2437
2438       MarkTileDirty(sxx, syy);
2439     }
2440   }
2441 }
2442
2443 void DrawLevelFieldCrumbled(int x, int y)
2444 {
2445   int graphic;
2446
2447   if (!IN_LEV_FIELD(x, y))
2448     return;
2449
2450   if (Tile[x][y] == EL_ELEMENT_SNAPPING &&
2451       GfxElement[x][y] != EL_UNDEFINED &&
2452       GFX_CRUMBLED(GfxElement[x][y]))
2453   {
2454     DrawLevelFieldCrumbledDigging(x, y, GfxDir[x][y], GfxFrame[x][y]);
2455
2456     return;
2457   }
2458
2459   graphic = el_act2crm(TILE_GFX_ELEMENT(x, y), ACTION_DEFAULT);
2460
2461   DrawLevelFieldCrumbledExt(x, y, graphic, 0);
2462 }
2463
2464 void DrawLevelFieldCrumbledDigging(int x, int y, int direction,
2465                                    int step_frame)
2466 {
2467   int graphic1 = el_act_dir2img(GfxElement[x][y], ACTION_DIGGING, direction);
2468   int graphic2 = el_act_dir2crm(GfxElement[x][y], ACTION_DIGGING, direction);
2469   int frame1 = getGraphicAnimationFrame(graphic1, step_frame);
2470   int frame2 = getGraphicAnimationFrame(graphic2, step_frame);
2471   int sx = SCREENX(x), sy = SCREENY(y);
2472
2473   DrawScreenGraphic(sx, sy, graphic1, frame1);
2474   DrawLevelFieldCrumbledExt(x, y, graphic2, frame2);
2475 }
2476
2477 void DrawLevelFieldCrumbledNeighbours(int x, int y)
2478 {
2479   int sx = SCREENX(x), sy = SCREENY(y);
2480   struct XY *xy = xy_topdown;
2481   int i;
2482
2483   // crumble direct neighbour fields (required for field borders)
2484   for (i = 0; i < 4; i++)
2485   {
2486     int xx = x + xy[i].x;
2487     int yy = y + xy[i].y;
2488     int sxx = sx + xy[i].x;
2489     int syy = sy + xy[i].y;
2490
2491     if (!IN_LEV_FIELD(xx, yy) ||
2492         !IN_SCR_FIELD(sxx, syy) ||
2493         !GFX_CRUMBLED(Tile[xx][yy]) ||
2494         IS_MOVING(xx, yy))
2495       continue;
2496
2497     DrawLevelField(xx, yy);
2498   }
2499
2500   // crumble corner neighbour fields (required for inner field corners)
2501   for (i = 0; i < 4; i++)
2502   {
2503     int dx = (i & 1 ? +1 : -1);
2504     int dy = (i & 2 ? +1 : -1);
2505     int xx = x + dx;
2506     int yy = y + dy;
2507     int sxx = sx + dx;
2508     int syy = sy + dy;
2509
2510     if (!IN_LEV_FIELD(xx, yy) ||
2511         !IN_SCR_FIELD(sxx, syy) ||
2512         !GFX_CRUMBLED(Tile[xx][yy]) ||
2513         IS_MOVING(xx, yy))
2514       continue;
2515
2516     int element = TILE_GFX_ELEMENT(xx, yy);
2517     int graphic = el_act2crm(element, ACTION_DEFAULT);
2518
2519     if ((graphic_info[graphic].style & STYLE_INNER_CORNERS) &&
2520         graphic_info[graphic].anim_frames == 2)
2521       DrawLevelField(xx, yy);
2522   }
2523 }
2524
2525 static int getBorderElement(int x, int y)
2526 {
2527   int border[7][2] =
2528   {
2529     { EL_STEELWALL_TOPLEFT,             EL_INVISIBLE_STEELWALL_TOPLEFT     },
2530     { EL_STEELWALL_TOPRIGHT,            EL_INVISIBLE_STEELWALL_TOPRIGHT    },
2531     { EL_STEELWALL_BOTTOMLEFT,          EL_INVISIBLE_STEELWALL_BOTTOMLEFT  },
2532     { EL_STEELWALL_BOTTOMRIGHT,         EL_INVISIBLE_STEELWALL_BOTTOMRIGHT },
2533     { EL_STEELWALL_VERTICAL,            EL_INVISIBLE_STEELWALL_VERTICAL    },
2534     { EL_STEELWALL_HORIZONTAL,          EL_INVISIBLE_STEELWALL_HORIZONTAL  },
2535     { EL_STEELWALL,                     EL_INVISIBLE_STEELWALL             }
2536   };
2537   int steel_type = (BorderElement == EL_STEELWALL ? 0 : 1);
2538   int steel_position = (x == -1         && y == -1              ? 0 :
2539                         x == lev_fieldx && y == -1              ? 1 :
2540                         x == -1         && y == lev_fieldy      ? 2 :
2541                         x == lev_fieldx && y == lev_fieldy      ? 3 :
2542                         x == -1         || x == lev_fieldx      ? 4 :
2543                         y == -1         || y == lev_fieldy      ? 5 : 6);
2544
2545   return border[steel_position][steel_type];
2546 }
2547
2548 void DrawScreenGraphic(int x, int y, int graphic, int frame)
2549 {
2550   if (game.use_masked_elements)
2551   {
2552     if (graphic != el2img(EL_EMPTY))
2553       DrawScreenElementExt(x, y, 0, 0, EL_EMPTY, NO_CUTTING, NO_MASKING);
2554
2555     DrawGraphicThruMask(x, y, graphic, frame);
2556   }
2557   else
2558   {
2559     DrawGraphic(x, y, graphic, frame);
2560   }
2561 }
2562
2563 void DrawLevelGraphic(int x, int y, int graphic, int frame)
2564 {
2565   DrawScreenGraphic(SCREENX(x), SCREENY(y), graphic, frame);
2566 }
2567
2568 void DrawScreenElement(int x, int y, int element)
2569 {
2570   int mask_mode = NO_MASKING;
2571
2572   if (game.use_masked_elements)
2573   {
2574     int lx = LEVELX(x), ly = LEVELY(y);
2575
2576     if (IN_LEV_FIELD(lx, ly) && element != EL_EMPTY)
2577     {
2578       DrawScreenElementExt(x, y, 0, 0, EL_EMPTY, NO_CUTTING, NO_MASKING);
2579
2580       mask_mode = USE_MASKING;
2581     }
2582   }
2583
2584   DrawScreenElementExt(x, y, 0, 0, element, NO_CUTTING, mask_mode);
2585   DrawLevelFieldCrumbled(LEVELX(x), LEVELY(y));
2586 }
2587
2588 void DrawLevelElement(int x, int y, int element)
2589 {
2590   if (IN_LEV_FIELD(x, y) && IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
2591     DrawScreenElement(SCREENX(x), SCREENY(y), element);
2592 }
2593
2594 void DrawScreenField(int x, int y)
2595 {
2596   int lx = LEVELX(x), ly = LEVELY(y);
2597   int element, content;
2598
2599   if (!IN_LEV_FIELD(lx, ly))
2600   {
2601     if (lx < -1 || lx > lev_fieldx || ly < -1 || ly > lev_fieldy)
2602       element = EL_EMPTY;
2603     else
2604       element = getBorderElement(lx, ly);
2605
2606     DrawScreenElement(x, y, element);
2607
2608     return;
2609   }
2610
2611   element = Tile[lx][ly];
2612   content = Store[lx][ly];
2613
2614   if (IS_MOVING(lx, ly))
2615   {
2616     int horiz_move = (MovDir[lx][ly] == MV_LEFT || MovDir[lx][ly] == MV_RIGHT);
2617     boolean cut_mode = NO_CUTTING;
2618
2619     if (element == EL_QUICKSAND_EMPTYING ||
2620         element == EL_QUICKSAND_FAST_EMPTYING ||
2621         element == EL_MAGIC_WALL_EMPTYING ||
2622         element == EL_BD_MAGIC_WALL_EMPTYING ||
2623         element == EL_DC_MAGIC_WALL_EMPTYING ||
2624         element == EL_AMOEBA_DROPPING)
2625       cut_mode = CUT_ABOVE;
2626     else if (element == EL_QUICKSAND_FILLING ||
2627              element == EL_QUICKSAND_FAST_FILLING ||
2628              element == EL_MAGIC_WALL_FILLING ||
2629              element == EL_BD_MAGIC_WALL_FILLING ||
2630              element == EL_DC_MAGIC_WALL_FILLING)
2631       cut_mode = CUT_BELOW;
2632
2633     if (cut_mode == CUT_ABOVE)
2634       DrawScreenElement(x, y, element);
2635     else
2636       DrawScreenElement(x, y, EL_EMPTY);
2637
2638     if (cut_mode != CUT_BELOW && game.use_masked_elements)
2639     {
2640       int dir = MovDir[lx][ly];
2641       int newx = x + (dir == MV_LEFT ? -1 : dir == MV_RIGHT ? +1 : 0);
2642       int newy = y + (dir == MV_UP   ? -1 : dir == MV_DOWN  ? +1 : 0);
2643
2644       if (IN_SCR_FIELD(newx, newy))
2645         DrawScreenElement(newx, newy, EL_EMPTY);
2646     }
2647
2648     if (horiz_move)
2649       DrawScreenElementShifted(x, y, MovPos[lx][ly], 0, element, NO_CUTTING);
2650     else if (cut_mode == NO_CUTTING)
2651       DrawScreenElementShifted(x, y, 0, MovPos[lx][ly], element, cut_mode);
2652     else
2653     {
2654       DrawScreenElementShifted(x, y, 0, MovPos[lx][ly], content, cut_mode);
2655
2656       if (cut_mode == CUT_BELOW &&
2657           IN_LEV_FIELD(lx, ly + 1) && IN_SCR_FIELD(x, y + 1))
2658         DrawLevelElement(lx, ly + 1, element);
2659     }
2660
2661     if (content == EL_ACID)
2662     {
2663       int dir = MovDir[lx][ly];
2664       int newlx = lx + (dir == MV_LEFT ? -1 : dir == MV_RIGHT ? +1 : 0);
2665       int newly = ly + (dir == MV_UP   ? -1 : dir == MV_DOWN  ? +1 : 0);
2666
2667       DrawLevelElementThruMask(newlx, newly, EL_ACID);
2668
2669       // prevent target field from being drawn again (but without masking)
2670       // (this would happen if target field is scanned after moving element)
2671       Stop[newlx][newly] = TRUE;
2672     }
2673   }
2674   else if (IS_BLOCKED(lx, ly))
2675   {
2676     int oldx, oldy;
2677     int sx, sy;
2678     int horiz_move;
2679     boolean cut_mode = NO_CUTTING;
2680     int element_old, content_old;
2681
2682     Blocked2Moving(lx, ly, &oldx, &oldy);
2683     sx = SCREENX(oldx);
2684     sy = SCREENY(oldy);
2685     horiz_move = (MovDir[oldx][oldy] == MV_LEFT ||
2686                   MovDir[oldx][oldy] == MV_RIGHT);
2687
2688     element_old = Tile[oldx][oldy];
2689     content_old = Store[oldx][oldy];
2690
2691     if (element_old == EL_QUICKSAND_EMPTYING ||
2692         element_old == EL_QUICKSAND_FAST_EMPTYING ||
2693         element_old == EL_MAGIC_WALL_EMPTYING ||
2694         element_old == EL_BD_MAGIC_WALL_EMPTYING ||
2695         element_old == EL_DC_MAGIC_WALL_EMPTYING ||
2696         element_old == EL_AMOEBA_DROPPING)
2697       cut_mode = CUT_ABOVE;
2698
2699     DrawScreenElement(x, y, EL_EMPTY);
2700
2701     if (horiz_move)
2702       DrawScreenElementShifted(sx, sy, MovPos[oldx][oldy], 0, element_old,
2703                                NO_CUTTING);
2704     else if (cut_mode == NO_CUTTING)
2705       DrawScreenElementShifted(sx, sy, 0, MovPos[oldx][oldy], element_old,
2706                                cut_mode);
2707     else
2708       DrawScreenElementShifted(sx, sy, 0, MovPos[oldx][oldy], content_old,
2709                                cut_mode);
2710   }
2711   else if (IS_DRAWABLE(element))
2712     DrawScreenElement(x, y, element);
2713   else
2714     DrawScreenElement(x, y, EL_EMPTY);
2715 }
2716
2717 void DrawLevelField(int x, int y)
2718 {
2719   if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
2720     DrawScreenField(SCREENX(x), SCREENY(y));
2721   else if (IS_MOVING(x, y))
2722   {
2723     int newx, newy;
2724
2725     Moving2Blocked(x, y, &newx, &newy);
2726     if (IN_SCR_FIELD(SCREENX(newx), SCREENY(newy)))
2727       DrawScreenField(SCREENX(newx), SCREENY(newy));
2728   }
2729   else if (IS_BLOCKED(x, y))
2730   {
2731     int oldx, oldy;
2732
2733     Blocked2Moving(x, y, &oldx, &oldy);
2734     if (IN_SCR_FIELD(SCREENX(oldx), SCREENY(oldy)))
2735       DrawScreenField(SCREENX(oldx), SCREENY(oldy));
2736   }
2737 }
2738
2739 static void DrawSizedWallExt_MM(int dst_x, int dst_y, int element, int tilesize,
2740                                 int (*el2img_function)(int), boolean masked,
2741                                 int element_bits_draw)
2742 {
2743   int element_base = map_mm_wall_element(element);
2744   int element_bits = (IS_DF_WALL(element) ?
2745                       element - EL_DF_WALL_START :
2746                       IS_MM_WALL(element) ?
2747                       element - EL_MM_WALL_START : EL_EMPTY) & 0x000f;
2748   int graphic = el2img_function(element_base);
2749   int tilesize_draw = tilesize / 2;
2750   Bitmap *src_bitmap;
2751   int src_x, src_y;
2752   int i;
2753
2754   getSizedGraphicSource(graphic, 0, tilesize_draw, &src_bitmap, &src_x, &src_y);
2755
2756   for (i = 0; i < 4; i++)
2757   {
2758     int dst_draw_x = dst_x + (i % 2) * tilesize_draw;
2759     int dst_draw_y = dst_y + (i / 2) * tilesize_draw;
2760
2761     if (!(element_bits_draw & (1 << i)))
2762       continue;
2763
2764     if (element_bits & (1 << i))
2765     {
2766       if (masked)
2767         BlitBitmapMasked(src_bitmap, drawto, src_x, src_y,
2768                          tilesize_draw, tilesize_draw, dst_draw_x, dst_draw_y);
2769       else
2770         BlitBitmap(src_bitmap, drawto, src_x, src_y,
2771                    tilesize_draw, tilesize_draw, dst_draw_x, dst_draw_y);
2772     }
2773     else
2774     {
2775       if (!masked)
2776         ClearRectangle(drawto, dst_draw_x, dst_draw_y,
2777                        tilesize_draw, tilesize_draw);
2778     }
2779   }
2780 }
2781
2782 void DrawSizedWallParts_MM(int x, int y, int element, int tilesize,
2783                            boolean masked, int element_bits_draw)
2784 {
2785   DrawSizedWallExt_MM(SX + x * tilesize, SY + y * tilesize,
2786                       element, tilesize, el2edimg, masked, element_bits_draw);
2787 }
2788
2789 static void DrawSizedWall_MM(int dst_x, int dst_y, int element, int tilesize,
2790                              int (*el2img_function)(int))
2791 {
2792   DrawSizedWallExt_MM(dst_x, dst_y, element, tilesize, el2img_function, FALSE,
2793                       0x000f);
2794 }
2795
2796 static void DrawSizedElementExt(int x, int y, int element, int tilesize,
2797                                 boolean masked)
2798 {
2799   if (IS_MM_WALL(element))
2800   {
2801     DrawSizedWallExt_MM(SX + x * tilesize, SY + y * tilesize,
2802                         element, tilesize, el2edimg, masked, 0x000f);
2803   }
2804   else
2805   {
2806     int graphic = el2edimg(element);
2807
2808     if (masked)
2809       DrawSizedGraphicThruMask(x, y, graphic, 0, tilesize);
2810     else
2811       DrawSizedGraphic(x, y, graphic, 0, tilesize);
2812   }
2813 }
2814
2815 void DrawSizedElement(int x, int y, int element, int tilesize)
2816 {
2817   DrawSizedElementExt(x, y, element, tilesize, FALSE);
2818 }
2819
2820 void DrawSizedElementThruMask(int x, int y, int element, int tilesize)
2821 {
2822   DrawSizedElementExt(x, y, element, tilesize, TRUE);
2823 }
2824
2825 void DrawMiniElement(int x, int y, int element)
2826 {
2827   int graphic;
2828
2829   graphic = el2edimg(element);
2830   DrawMiniGraphic(x, y, graphic);
2831 }
2832
2833 void DrawSizedElementOrWall(int sx, int sy, int scroll_x, int scroll_y,
2834                             int tilesize)
2835 {
2836   int x = sx + scroll_x, y = sy + scroll_y;
2837
2838   if (x < -1 || x > lev_fieldx || y < -1 || y > lev_fieldy)
2839     DrawSizedElement(sx, sy, EL_EMPTY, tilesize);
2840   else if (x > -1 && x < lev_fieldx && y > -1 && y < lev_fieldy)
2841     DrawSizedElement(sx, sy, Tile[x][y], tilesize);
2842   else
2843     DrawSizedGraphic(sx, sy, el2edimg(getBorderElement(x, y)), 0, tilesize);
2844 }
2845
2846 void DrawMiniElementOrWall(int sx, int sy, int scroll_x, int scroll_y)
2847 {
2848   int x = sx + scroll_x, y = sy + scroll_y;
2849
2850   if (x < -1 || x > lev_fieldx || y < -1 || y > lev_fieldy)
2851     DrawMiniElement(sx, sy, EL_EMPTY);
2852   else if (x > -1 && x < lev_fieldx && y > -1 && y < lev_fieldy)
2853     DrawMiniElement(sx, sy, Tile[x][y]);
2854   else
2855     DrawMiniGraphic(sx, sy, el2edimg(getBorderElement(x, y)));
2856 }
2857
2858 static void DrawEnvelopeBackgroundTiles(int graphic, int startx, int starty,
2859                                         int x, int y, int xsize, int ysize,
2860                                         int tile_width, int tile_height)
2861 {
2862   Bitmap *src_bitmap;
2863   int src_x, src_y;
2864   int dst_x = startx + x * tile_width;
2865   int dst_y = starty + y * tile_height;
2866   int width  = graphic_info[graphic].width;
2867   int height = graphic_info[graphic].height;
2868   int inner_width_raw  = MAX(width  - 2 * tile_width,  tile_width);
2869   int inner_height_raw = MAX(height - 2 * tile_height, tile_height);
2870   int inner_width  = inner_width_raw  - (inner_width_raw  % tile_width);
2871   int inner_height = inner_height_raw - (inner_height_raw % tile_height);
2872   int inner_sx = (width  >= 3 * tile_width  ? tile_width  : 0);
2873   int inner_sy = (height >= 3 * tile_height ? tile_height : 0);
2874   boolean draw_masked = graphic_info[graphic].draw_masked;
2875
2876   getFixedGraphicSource(graphic, 0, &src_bitmap, &src_x, &src_y);
2877
2878   if (src_bitmap == NULL || width < tile_width || height < tile_height)
2879   {
2880     ClearRectangle(drawto, dst_x, dst_y, tile_width, tile_height);
2881     return;
2882   }
2883
2884   src_x += (x == 0 ? 0 : x == xsize - 1 ? width  - tile_width  :
2885             inner_sx + (x - 1) * tile_width  % inner_width);
2886   src_y += (y == 0 ? 0 : y == ysize - 1 ? height - tile_height :
2887             inner_sy + (y - 1) * tile_height % inner_height);
2888
2889   if (draw_masked)
2890     BlitBitmapMasked(src_bitmap, drawto, src_x, src_y, tile_width, tile_height,
2891                      dst_x, dst_y);
2892   else
2893     BlitBitmap(src_bitmap, drawto, src_x, src_y, tile_width, tile_height,
2894                dst_x, dst_y);
2895 }
2896
2897 static void DrawEnvelopeBackground(int graphic, int startx, int starty,
2898                                    int x, int y, int xsize, int ysize,
2899                                    int font_nr)
2900 {
2901   int font_width  = getFontWidth(font_nr);
2902   int font_height = getFontHeight(font_nr);
2903
2904   DrawEnvelopeBackgroundTiles(graphic, startx, starty, x, y, xsize, ysize,
2905                               font_width, font_height);
2906 }
2907
2908 static void AnimateEnvelope(int envelope_nr, int anim_mode, int action)
2909 {
2910   int graphic = IMG_BACKGROUND_ENVELOPE_1 + envelope_nr;
2911   Bitmap *src_bitmap = graphic_info[graphic].bitmap;
2912   int mask_mode = (src_bitmap != NULL ? BLIT_MASKED : BLIT_ON_BACKGROUND);
2913   boolean ffwd_delay = (tape.playing && tape.fast_forward);
2914   boolean no_delay = (tape.warp_forward);
2915   int frame_delay_value = (ffwd_delay ? FfwdFrameDelay : GameFrameDelay);
2916   int anim_delay_value = MAX(1, (no_delay ? 0 : frame_delay_value) / 2);
2917   DelayCounter anim_delay = { anim_delay_value };
2918   int font_nr = FONT_ENVELOPE_1 + envelope_nr;
2919   int font_width = getFontWidth(font_nr);
2920   int font_height = getFontHeight(font_nr);
2921   int max_xsize = level.envelope[envelope_nr].xsize;
2922   int max_ysize = level.envelope[envelope_nr].ysize;
2923   int xstart = (anim_mode & ANIM_VERTICAL ? max_xsize : 0);
2924   int ystart = (anim_mode & ANIM_HORIZONTAL ? max_ysize : 0);
2925   int xend = max_xsize;
2926   int yend = (anim_mode != ANIM_DEFAULT ? max_ysize : 0);
2927   int xstep = (xstart < xend ? 1 : 0);
2928   int ystep = (ystart < yend || xstep == 0 ? 1 : 0);
2929   int start = 0;
2930   int end = MAX(xend - xstart, yend - ystart);
2931   int i;
2932
2933   for (i = start; i <= end; i++)
2934   {
2935     int last_frame = end;       // last frame of this "for" loop
2936     int x = xstart + i * xstep;
2937     int y = ystart + i * ystep;
2938     int xsize = (action == ACTION_CLOSING ? xend - (x - xstart) : x) + 2;
2939     int ysize = (action == ACTION_CLOSING ? yend - (y - ystart) : y) + 2;
2940     int sx = SX + (SXSIZE - xsize * font_width)  / 2;
2941     int sy = SY + (SYSIZE - ysize * font_height) / 2;
2942     int xx, yy;
2943
2944     SetDrawtoField(DRAW_TO_FIELDBUFFER);
2945
2946     BlitScreenToBitmap(backbuffer);
2947
2948     SetDrawtoField(DRAW_TO_BACKBUFFER);
2949
2950     for (yy = 0; yy < ysize; yy++)
2951       for (xx = 0; xx < xsize; xx++)
2952         DrawEnvelopeBackground(graphic, sx, sy, xx, yy, xsize, ysize, font_nr);
2953
2954     DrawTextArea(sx + font_width, sy + font_height,
2955                  level.envelope[envelope_nr].text, font_nr, max_xsize,
2956                  xsize - 2, ysize - 2, 0, mask_mode,
2957                  level.envelope[envelope_nr].autowrap,
2958                  level.envelope[envelope_nr].centered, FALSE);
2959
2960     redraw_mask |= REDRAW_FIELD;
2961     BackToFront();
2962
2963     SkipUntilDelayReached(&anim_delay, &i, last_frame);
2964   }
2965
2966   ClearAutoRepeatKeyEvents();
2967 }
2968
2969 void ShowEnvelope(int envelope_nr)
2970 {
2971   int element = EL_ENVELOPE_1 + envelope_nr;
2972   int graphic = IMG_BACKGROUND_ENVELOPE_1 + envelope_nr;
2973   int sound_opening = element_info[element].sound[ACTION_OPENING];
2974   int sound_closing = element_info[element].sound[ACTION_CLOSING];
2975   boolean ffwd_delay = (tape.playing && tape.fast_forward);
2976   boolean no_delay = (tape.warp_forward);
2977   int normal_delay_value = ONE_SECOND_DELAY / (ffwd_delay ? 2 : 1);
2978   int wait_delay_value = (no_delay ? 0 : normal_delay_value);
2979   int anim_mode = graphic_info[graphic].anim_mode;
2980   int main_anim_mode = (anim_mode == ANIM_NONE ? ANIM_VERTICAL|ANIM_HORIZONTAL:
2981                         anim_mode == ANIM_DEFAULT ? ANIM_VERTICAL : anim_mode);
2982   boolean overlay_enabled = GetOverlayEnabled();
2983
2984   game.envelope_active = TRUE;  // needed for RedrawPlayfield() events
2985
2986   SetOverlayEnabled(FALSE);
2987   UnmapAllGadgets();
2988
2989   PlayMenuSoundStereo(sound_opening, SOUND_MIDDLE);
2990
2991   if (anim_mode == ANIM_DEFAULT)
2992     AnimateEnvelope(envelope_nr, ANIM_DEFAULT, ACTION_OPENING);
2993
2994   AnimateEnvelope(envelope_nr, main_anim_mode, ACTION_OPENING);
2995
2996   if (tape.playing)
2997     Delay_WithScreenUpdates(wait_delay_value);
2998   else
2999     WaitForEventToContinue();
3000
3001   RemapAllGadgets();
3002   SetOverlayEnabled(overlay_enabled);
3003
3004   PlayMenuSoundStereo(sound_closing, SOUND_MIDDLE);
3005
3006   if (anim_mode != ANIM_NONE)
3007     AnimateEnvelope(envelope_nr, main_anim_mode, ACTION_CLOSING);
3008
3009   if (anim_mode == ANIM_DEFAULT)
3010     AnimateEnvelope(envelope_nr, ANIM_DEFAULT, ACTION_CLOSING);
3011
3012   game.envelope_active = FALSE;
3013
3014   SetDrawtoField(DRAW_TO_FIELDBUFFER);
3015
3016   redraw_mask |= REDRAW_FIELD;
3017   BackToFront();
3018 }
3019
3020 static void PrepareEnvelopeRequestToScreen(Bitmap *bitmap, int sx, int sy,
3021                                            int xsize, int ysize)
3022 {
3023   if (!global.use_envelope_request)
3024     return;
3025
3026   if (request.bitmap == NULL ||
3027       xsize > request.xsize ||
3028       ysize > request.ysize)
3029   {
3030     if (request.bitmap != NULL)
3031       FreeBitmap(request.bitmap);
3032
3033     request.bitmap = CreateBitmap(xsize, ysize, DEFAULT_DEPTH);
3034
3035     SDL_Surface *surface = request.bitmap->surface;
3036
3037     if ((request.bitmap->surface_masked = SDLGetNativeSurface(surface)) == NULL)
3038       Fail("SDLGetNativeSurface() failed");
3039   }
3040
3041   BlitBitmap(bitmap, request.bitmap, sx, sy, xsize, ysize, 0, 0);
3042
3043   // create masked surface for request bitmap, if needed
3044   if (graphic_info[IMG_BACKGROUND_REQUEST].draw_masked)
3045   {
3046     SDL_Surface *surface        = request.bitmap->surface;
3047     SDL_Surface *surface_masked = request.bitmap->surface_masked;
3048
3049     SDLBlitSurface(surface, surface_masked, 0, 0, xsize, ysize, 0, 0);
3050     SDL_SetColorKey(surface_masked, SET_TRANSPARENT_PIXEL,
3051                     SDL_MapRGB(surface_masked->format, 0x00, 0x00, 0x00));
3052   }
3053
3054   SDLFreeBitmapTextures(request.bitmap);
3055   SDLCreateBitmapTextures(request.bitmap);
3056
3057   // set envelope request run-time values
3058   request.sx = sx;
3059   request.sy = sy;
3060   request.xsize = xsize;
3061   request.ysize = ysize;
3062 }
3063
3064 void DrawEnvelopeRequestToScreen(int drawing_target)
3065 {
3066   if (global.use_envelope_request &&
3067       game.request_active &&
3068       drawing_target == DRAW_TO_SCREEN)
3069   {
3070     if (graphic_info[IMG_BACKGROUND_REQUEST].draw_masked)
3071       BlitToScreenMasked(request.bitmap, 0, 0, request.xsize, request.ysize,
3072                          request.sx, request.sy);
3073     else
3074       BlitToScreen(request.bitmap, 0, 0, request.xsize, request.ysize,
3075                    request.sx, request.sy);
3076   }
3077 }
3078
3079 static void setRequestBasePosition(int *x, int *y)
3080 {
3081   int sx_base, sy_base;
3082
3083   if (request.x != -1)
3084     sx_base = request.x;
3085   else if (request.align == ALIGN_LEFT)
3086     sx_base = SX;
3087   else if (request.align == ALIGN_RIGHT)
3088     sx_base = SX + SXSIZE;
3089   else
3090     sx_base = SX + SXSIZE / 2;
3091
3092   if (request.y != -1)
3093     sy_base = request.y;
3094   else if (request.valign == VALIGN_TOP)
3095     sy_base = SY;
3096   else if (request.valign == VALIGN_BOTTOM)
3097     sy_base = SY + SYSIZE;
3098   else
3099     sy_base = SY + SYSIZE / 2;
3100
3101   *x = sx_base;
3102   *y = sy_base;
3103 }
3104
3105 static void setRequestPositionExt(int *x, int *y, int width, int height,
3106                                   boolean add_border_size)
3107 {
3108   int border_size = request.border_size;
3109   int sx_base, sy_base;
3110   int sx, sy;
3111
3112   setRequestBasePosition(&sx_base, &sy_base);
3113
3114   if (request.align == ALIGN_LEFT)
3115     sx = sx_base;
3116   else if (request.align == ALIGN_RIGHT)
3117     sx = sx_base - width;
3118   else
3119     sx = sx_base - width  / 2;
3120
3121   if (request.valign == VALIGN_TOP)
3122     sy = sy_base;
3123   else if (request.valign == VALIGN_BOTTOM)
3124     sy = sy_base - height;
3125   else
3126     sy = sy_base - height / 2;
3127
3128   sx = MAX(0, MIN(sx, WIN_XSIZE - width));
3129   sy = MAX(0, MIN(sy, WIN_YSIZE - height));
3130
3131   if (add_border_size)
3132   {
3133     sx += border_size;
3134     sy += border_size;
3135   }
3136
3137   *x = sx;
3138   *y = sy;
3139 }
3140
3141 static void setRequestPosition(int *x, int *y, boolean add_border_size)
3142 {
3143   setRequestPositionExt(x, y, request.width, request.height, add_border_size);
3144 }
3145
3146 static void DrawEnvelopeRequest(char *text, unsigned int req_state)
3147 {
3148   DrawBuffer *drawto_last = drawto;
3149   char *text_final = text;
3150   char *text_door_style = NULL;
3151   int graphic = IMG_BACKGROUND_REQUEST;
3152   Bitmap *src_bitmap = graphic_info[graphic].bitmap;
3153   int mask_mode = (src_bitmap != NULL ? BLIT_MASKED : BLIT_ON_BACKGROUND);
3154   int font_nr = FONT_REQUEST;
3155   int font_width = getFontWidth(font_nr);
3156   int font_height = getFontHeight(font_nr);
3157   int border_size = request.border_size;
3158   int line_spacing = request.line_spacing;
3159   int line_height = font_height + line_spacing;
3160   int max_text_width  = request.width  - 2 * border_size;
3161   int max_text_height = request.height - 2 * border_size;
3162   int line_length = max_text_width  / font_width;
3163   int max_lines   = max_text_height / line_height;
3164   int text_width = line_length * font_width;
3165   int width = request.width;
3166   int height = request.height;
3167   int tile_size = MAX(request.step_offset, 1);
3168   int x_steps = width  / tile_size;
3169   int y_steps = height / tile_size;
3170   int sx_offset = border_size;
3171   int sy_offset = border_size;
3172   int sx, sy;
3173   int x, y;
3174
3175   if (request.centered)
3176     sx_offset = (request.width - text_width) / 2;
3177
3178   if (request.wrap_single_words && !request.autowrap)
3179   {
3180     char *src_text_ptr, *dst_text_ptr;
3181
3182     text_door_style = checked_malloc(2 * strlen(text) + 1);
3183
3184     src_text_ptr = text;
3185     dst_text_ptr = text_door_style;
3186
3187     while (*src_text_ptr)
3188     {
3189       if (*src_text_ptr == ' ' ||
3190           *src_text_ptr == '?' ||
3191           *src_text_ptr == '!')
3192         *dst_text_ptr++ = '\n';
3193
3194       if (*src_text_ptr != ' ')
3195         *dst_text_ptr++ = *src_text_ptr;
3196
3197       src_text_ptr++;
3198     }
3199
3200     *dst_text_ptr = '\0';
3201
3202     text_final = text_door_style;
3203   }
3204
3205   setRequestPosition(&sx, &sy, FALSE);
3206
3207   // draw complete envelope request to temporary bitmap
3208   drawto = bitmap_db_store_1;
3209
3210   ClearRectangle(drawto, sx, sy, width, height);
3211
3212   for (y = 0; y < y_steps; y++)
3213     for (x = 0; x < x_steps; x++)
3214       DrawEnvelopeBackgroundTiles(graphic, sx, sy,
3215                                   x, y, x_steps, y_steps,
3216                                   tile_size, tile_size);
3217
3218   // force DOOR font inside door area
3219   SetFontStatus(GAME_MODE_PSEUDO_DOOR);
3220
3221   DrawTextBuffer(sx + sx_offset, sy + sy_offset, text_final, font_nr,
3222                  line_length, -1, max_lines, line_spacing, mask_mode,
3223                  request.autowrap, request.centered, FALSE);
3224
3225   ResetFontStatus();
3226
3227   MapToolButtons(req_state);
3228
3229   // restore pointer to drawing buffer
3230   drawto = drawto_last;
3231
3232   // prepare complete envelope request from temporary bitmap
3233   PrepareEnvelopeRequestToScreen(bitmap_db_store_1, sx, sy, width, height);
3234
3235   if (text_door_style)
3236     free(text_door_style);
3237 }
3238
3239 static void AnimateEnvelopeRequest(int anim_mode, int action)
3240 {
3241   boolean game_ended = (game_status == GAME_MODE_PLAYING && checkGameEnded());
3242   int delay_value_normal = request.step_delay;
3243   int delay_value_fast = delay_value_normal / 2;
3244   boolean ffwd_delay = (tape.playing && tape.fast_forward);
3245   boolean no_delay = (tape.warp_forward);
3246   int delay_value = (ffwd_delay ? delay_value_fast : delay_value_normal);
3247   int anim_delay_value = MAX(1, (no_delay ? 0 : delay_value) / 2);
3248   DelayCounter anim_delay = { anim_delay_value };
3249
3250   int tile_size = MAX(request.step_offset, 1);
3251   int max_xsize = request.width  / tile_size;
3252   int max_ysize = request.height / tile_size;
3253   int max_xsize_inner = max_xsize - 2;
3254   int max_ysize_inner = max_ysize - 2;
3255
3256   int xstart = (anim_mode & ANIM_VERTICAL ? max_xsize_inner : 0);
3257   int ystart = (anim_mode & ANIM_HORIZONTAL ? max_ysize_inner : 0);
3258   int xend = max_xsize_inner;
3259   int yend = (anim_mode != ANIM_DEFAULT ? max_ysize_inner : 0);
3260   int xstep = (xstart < xend ? 1 : 0);
3261   int ystep = (ystart < yend || xstep == 0 ? 1 : 0);
3262   int start = 0;
3263   int end = MAX(xend - xstart, yend - ystart);
3264   int i;
3265
3266   if (setup.quick_doors)
3267   {
3268     xstart = xend;
3269     ystart = yend;
3270     end = 0;
3271   }
3272
3273   for (i = start; i <= end; i++)
3274   {
3275     int last_frame = end;       // last frame of this "for" loop
3276     int x = xstart + i * xstep;
3277     int y = ystart + i * ystep;
3278     int xsize = (action == ACTION_CLOSING ? xend - (x - xstart) : x) + 2;
3279     int ysize = (action == ACTION_CLOSING ? yend - (y - ystart) : y) + 2;
3280     int xsize_size_left = (xsize - 1) * tile_size;
3281     int ysize_size_top  = (ysize - 1) * tile_size;
3282     int max_xsize_pos = (max_xsize - 1) * tile_size;
3283     int max_ysize_pos = (max_ysize - 1) * tile_size;
3284     int width  = xsize * tile_size;
3285     int height = ysize * tile_size;
3286     int src_x, src_y;
3287     int dst_x, dst_y;
3288     int xx, yy;
3289
3290     if (game_ended)
3291       HandleGameActions();
3292
3293     setRequestPosition(&src_x, &src_y, FALSE);
3294     setRequestPositionExt(&dst_x, &dst_y, width, height, FALSE);
3295
3296     for (yy = 0; yy < 2; yy++)
3297     {
3298       for (xx = 0; xx < 2; xx++)
3299       {
3300         int src_xx = src_x + xx * max_xsize_pos;
3301         int src_yy = src_y + yy * max_ysize_pos;
3302         int dst_xx = dst_x + xx * xsize_size_left;
3303         int dst_yy = dst_y + yy * ysize_size_top;
3304         int xx_size = (xx ? tile_size : xsize_size_left);
3305         int yy_size = (yy ? tile_size : ysize_size_top);
3306
3307         // draw partial (animated) envelope request to temporary bitmap
3308         BlitBitmap(bitmap_db_store_1, bitmap_db_store_2,
3309                    src_xx, src_yy, xx_size, yy_size, dst_xx, dst_yy);
3310       }
3311     }
3312
3313     // prepare partial (animated) envelope request from temporary bitmap
3314     PrepareEnvelopeRequestToScreen(bitmap_db_store_2, dst_x, dst_y,
3315                                    width, height);
3316
3317     redraw_mask |= REDRAW_FIELD;
3318
3319     BackToFront();
3320
3321     SkipUntilDelayReached(&anim_delay, &i, last_frame);
3322   }
3323
3324   ClearAutoRepeatKeyEvents();
3325 }
3326
3327 static void ShowEnvelopeRequest(char *text, unsigned int req_state, int action)
3328 {
3329   int graphic = IMG_BACKGROUND_REQUEST;
3330   int sound_opening = SND_REQUEST_OPENING;
3331   int sound_closing = SND_REQUEST_CLOSING;
3332   int anim_mode_1 = request.anim_mode;                  // (higher priority)
3333   int anim_mode_2 = graphic_info[graphic].anim_mode;    // (lower priority)
3334   int anim_mode = (anim_mode_1 != ANIM_DEFAULT ? anim_mode_1 : anim_mode_2);
3335   int main_anim_mode = (anim_mode == ANIM_NONE ? ANIM_VERTICAL|ANIM_HORIZONTAL:
3336                         anim_mode == ANIM_DEFAULT ? ANIM_VERTICAL : anim_mode);
3337
3338   game.envelope_active = TRUE;  // needed for RedrawPlayfield() events
3339
3340   if (action == ACTION_OPENING)
3341   {
3342     PlayMenuSoundStereo(sound_opening, SOUND_MIDDLE);
3343
3344     if (anim_mode == ANIM_DEFAULT)
3345       AnimateEnvelopeRequest(ANIM_DEFAULT, ACTION_OPENING);
3346
3347     AnimateEnvelopeRequest(main_anim_mode, ACTION_OPENING);
3348   }
3349   else
3350   {
3351     PlayMenuSoundStereo(sound_closing, SOUND_MIDDLE);
3352
3353     if (anim_mode != ANIM_NONE)
3354       AnimateEnvelopeRequest(main_anim_mode, ACTION_CLOSING);
3355
3356     if (anim_mode == ANIM_DEFAULT)
3357       AnimateEnvelopeRequest(ANIM_DEFAULT, ACTION_CLOSING);
3358   }
3359
3360   game.envelope_active = FALSE;
3361 }
3362
3363 static void DrawPreviewElement(int dst_x, int dst_y, int element, int tilesize)
3364 {
3365   if (IS_MM_WALL(element))
3366   {
3367     DrawSizedWall_MM(dst_x, dst_y, element, tilesize, el2preimg);
3368   }
3369   else
3370   {
3371     Bitmap *src_bitmap;
3372     int src_x, src_y;
3373     int graphic = el2preimg(element);
3374
3375     getSizedGraphicSource(graphic, 0, tilesize, &src_bitmap, &src_x, &src_y);
3376     BlitBitmap(src_bitmap, drawto, src_x, src_y, tilesize, tilesize,
3377                dst_x, dst_y);
3378   }
3379 }
3380
3381 void DrawLevel(int draw_background_mask)
3382 {
3383   int x, y;
3384
3385   SetMainBackgroundImage(IMG_BACKGROUND_PLAYING);
3386   SetDrawBackgroundMask(draw_background_mask);
3387
3388   ClearField();
3389
3390   for (x = BX1; x <= BX2; x++)
3391     for (y = BY1; y <= BY2; y++)
3392       DrawScreenField(x, y);
3393
3394   redraw_mask |= REDRAW_FIELD;
3395 }
3396
3397 void DrawSizedLevel(int size_x, int size_y, int scroll_x, int scroll_y,
3398                     int tilesize)
3399 {
3400   int x, y;
3401
3402   for (x = 0; x < size_x; x++)
3403     for (y = 0; y < size_y; y++)
3404       DrawSizedElementOrWall(x, y, scroll_x, scroll_y, tilesize);
3405
3406   redraw_mask |= REDRAW_FIELD;
3407 }
3408
3409 void DrawMiniLevel(int size_x, int size_y, int scroll_x, int scroll_y)
3410 {
3411   int x, y;
3412
3413   for (x = 0; x < size_x; x++)
3414     for (y = 0; y < size_y; y++)
3415       DrawMiniElementOrWall(x, y, scroll_x, scroll_y);
3416
3417   redraw_mask |= REDRAW_FIELD;
3418 }
3419
3420 static void DrawPreviewLevelPlayfield(int from_x, int from_y)
3421 {
3422   boolean show_level_border = (BorderElement != EL_EMPTY);
3423   int level_xsize = lev_fieldx + (show_level_border ? 2 : 0);
3424   int level_ysize = lev_fieldy + (show_level_border ? 2 : 0);
3425   int tile_size = preview.tile_size;
3426   int preview_width  = preview.xsize * tile_size;
3427   int preview_height = preview.ysize * tile_size;
3428   int real_preview_xsize = MIN(level_xsize, preview.xsize);
3429   int real_preview_ysize = MIN(level_ysize, preview.ysize);
3430   int real_preview_width  = real_preview_xsize * tile_size;
3431   int real_preview_height = real_preview_ysize * tile_size;
3432   int dst_x = SX + ALIGNED_XPOS(preview.x, preview_width, preview.align);
3433   int dst_y = SY + ALIGNED_YPOS(preview.y, preview_height, preview.valign);
3434   int x, y;
3435
3436   if (!IN_GFX_FIELD_FULL(dst_x, dst_y + preview_height - 1))
3437     return;
3438
3439   DrawBackground(dst_x, dst_y, preview_width, preview_height);
3440
3441   dst_x += (preview_width  - real_preview_width)  / 2;
3442   dst_y += (preview_height - real_preview_height) / 2;
3443
3444   for (x = 0; x < real_preview_xsize; x++)
3445   {
3446     for (y = 0; y < real_preview_ysize; y++)
3447     {
3448       int lx = from_x + x + (show_level_border ? -1 : 0);
3449       int ly = from_y + y + (show_level_border ? -1 : 0);
3450       int element = (IN_LEV_FIELD(lx, ly) ? level.field[lx][ly] :
3451                      getBorderElement(lx, ly));
3452
3453       DrawPreviewElement(dst_x + x * tile_size, dst_y + y * tile_size,
3454                          element, tile_size);
3455     }
3456   }
3457
3458   redraw_mask |= REDRAW_FIELD;
3459 }
3460
3461 #define MICROLABEL_EMPTY                0
3462 #define MICROLABEL_LEVEL_NAME           1
3463 #define MICROLABEL_LEVEL_AUTHOR_HEAD    2
3464 #define MICROLABEL_LEVEL_AUTHOR         3
3465 #define MICROLABEL_IMPORTED_FROM_HEAD   4
3466 #define MICROLABEL_IMPORTED_FROM        5
3467 #define MICROLABEL_IMPORTED_BY_HEAD     6
3468 #define MICROLABEL_IMPORTED_BY          7
3469
3470 static int getMaxTextLength(struct TextPosInfo *pos, int font_nr)
3471 {
3472   int max_text_width = SXSIZE;
3473   int font_width = getFontWidth(font_nr);
3474
3475   if (pos->align == ALIGN_CENTER)
3476     max_text_width = (pos->x < SXSIZE / 2 ? pos->x * 2 : (SXSIZE - pos->x) * 2);
3477   else if (pos->align == ALIGN_RIGHT)
3478     max_text_width = pos->x;
3479   else
3480     max_text_width = SXSIZE - pos->x;
3481
3482   return max_text_width / font_width;
3483 }
3484
3485 static void DrawPreviewLevelLabelExt(int mode, struct TextPosInfo *pos)
3486 {
3487   char label_text[MAX_OUTPUT_LINESIZE + 1];
3488   int max_len_label_text;
3489   int font_nr = pos->font;
3490   int i;
3491
3492   if (!IN_GFX_FIELD_FULL(pos->x, pos->y + getFontHeight(pos->font)))
3493     return;
3494
3495   if (mode == MICROLABEL_LEVEL_AUTHOR_HEAD ||
3496       mode == MICROLABEL_IMPORTED_FROM_HEAD ||
3497       mode == MICROLABEL_IMPORTED_BY_HEAD)
3498     font_nr = pos->font_alt;
3499
3500   max_len_label_text = getMaxTextLength(pos, font_nr);
3501
3502   if (pos->size != -1)
3503     max_len_label_text = pos->size;
3504
3505   for (i = 0; i < max_len_label_text; i++)
3506     label_text[i] = ' ';
3507   label_text[max_len_label_text] = '\0';
3508
3509   if (strlen(label_text) > 0)
3510     DrawTextSAligned(pos->x, pos->y, label_text, font_nr, pos->align);
3511
3512   strncpy(label_text,
3513           (mode == MICROLABEL_LEVEL_NAME ? level.name :
3514            mode == MICROLABEL_LEVEL_AUTHOR_HEAD ? "created by" :
3515            mode == MICROLABEL_LEVEL_AUTHOR ? level.author :
3516            mode == MICROLABEL_IMPORTED_FROM_HEAD ? "imported from" :
3517            mode == MICROLABEL_IMPORTED_FROM ? leveldir_current->imported_from :
3518            mode == MICROLABEL_IMPORTED_BY_HEAD ? "imported by" :
3519            mode == MICROLABEL_IMPORTED_BY ? leveldir_current->imported_by :""),
3520           max_len_label_text);
3521   label_text[max_len_label_text] = '\0';
3522
3523   if (strlen(label_text) > 0)
3524     DrawTextSAligned(pos->x, pos->y, label_text, font_nr, pos->align);
3525
3526   redraw_mask |= REDRAW_FIELD;
3527 }
3528
3529 static void DrawPreviewLevelLabel(int mode)
3530 {
3531   DrawPreviewLevelLabelExt(mode, &menu.main.text.level_info_2);
3532 }
3533
3534 static void DrawPreviewLevelInfo(int mode)
3535 {
3536   if (mode == MICROLABEL_LEVEL_NAME)
3537     DrawPreviewLevelLabelExt(mode, &menu.main.text.level_name);
3538   else if (mode == MICROLABEL_LEVEL_AUTHOR)
3539     DrawPreviewLevelLabelExt(mode, &menu.main.text.level_author);
3540 }
3541
3542 static void DrawPreviewLevelExt(boolean restart)
3543 {
3544   static DelayCounter scroll_delay = { 0 };
3545   static DelayCounter label_delay = { 0 };
3546   static int from_x, from_y, scroll_direction;
3547   static int label_state, label_counter;
3548   boolean show_level_border = (BorderElement != EL_EMPTY);
3549   int level_xsize = lev_fieldx + (show_level_border ? 2 : 0);
3550   int level_ysize = lev_fieldy + (show_level_border ? 2 : 0);
3551
3552   scroll_delay.value = preview.step_delay;
3553   label_delay.value = MICROLEVEL_LABEL_DELAY;
3554
3555   if (restart)
3556   {
3557     from_x = 0;
3558     from_y = 0;
3559
3560     if (preview.anim_mode == ANIM_CENTERED)
3561     {
3562       if (level_xsize > preview.xsize)
3563         from_x = (level_xsize - preview.xsize) / 2;
3564       if (level_ysize > preview.ysize)
3565         from_y = (level_ysize - preview.ysize) / 2;
3566     }
3567
3568     from_x += preview.xoffset;
3569     from_y += preview.yoffset;
3570
3571     scroll_direction = MV_RIGHT;
3572     label_state = 1;
3573     label_counter = 0;
3574
3575     DrawPreviewLevelPlayfield(from_x, from_y);
3576     DrawPreviewLevelLabel(label_state);
3577
3578     DrawPreviewLevelInfo(MICROLABEL_LEVEL_NAME);
3579     DrawPreviewLevelInfo(MICROLABEL_LEVEL_AUTHOR);
3580
3581     // initialize delay counters
3582     ResetDelayCounter(&scroll_delay);
3583     ResetDelayCounter(&label_delay);
3584
3585     if (leveldir_current->name)
3586     {
3587       struct TextPosInfo *pos = &menu.main.text.level_info_1;
3588       char label_text[MAX_OUTPUT_LINESIZE + 1];
3589       int font_nr = pos->font;
3590       int max_len_label_text = getMaxTextLength(pos, font_nr);
3591
3592       if (pos->size != -1)
3593         max_len_label_text = pos->size;
3594
3595       strncpy(label_text, leveldir_current->name, max_len_label_text);
3596       label_text[max_len_label_text] = '\0';
3597
3598       if (IN_GFX_FIELD_FULL(pos->x, pos->y + getFontHeight(pos->font)))
3599         DrawTextSAligned(pos->x, pos->y, label_text, font_nr, pos->align);
3600     }
3601
3602     return;
3603   }
3604
3605   // scroll preview level, if needed
3606   if (preview.anim_mode != ANIM_NONE &&
3607       (level_xsize > preview.xsize || level_ysize > preview.ysize) &&
3608       DelayReached(&scroll_delay))
3609   {
3610     switch (scroll_direction)
3611     {
3612       case MV_LEFT:
3613         if (from_x > 0)
3614         {
3615           from_x -= preview.step_offset;
3616           from_x = (from_x < 0 ? 0 : from_x);
3617         }
3618         else
3619           scroll_direction = MV_UP;
3620         break;
3621
3622       case MV_RIGHT:
3623         if (from_x < level_xsize - preview.xsize)
3624         {
3625           from_x += preview.step_offset;
3626           from_x = (from_x > level_xsize - preview.xsize ?
3627                     level_xsize - preview.xsize : from_x);
3628         }
3629         else
3630           scroll_direction = MV_DOWN;
3631         break;
3632
3633       case MV_UP:
3634         if (from_y > 0)
3635         {
3636           from_y -= preview.step_offset;
3637           from_y = (from_y < 0 ? 0 : from_y);
3638         }
3639         else
3640           scroll_direction = MV_RIGHT;
3641         break;
3642
3643       case MV_DOWN:
3644         if (from_y < level_ysize - preview.ysize)
3645         {
3646           from_y += preview.step_offset;
3647           from_y = (from_y > level_ysize - preview.ysize ?
3648                     level_ysize - preview.ysize : from_y);
3649         }
3650         else
3651           scroll_direction = MV_LEFT;
3652         break;
3653
3654       default:
3655         break;
3656     }
3657
3658     DrawPreviewLevelPlayfield(from_x, from_y);
3659   }
3660
3661   // !!! THIS ALL SUCKS -- SHOULD BE CLEANLY REWRITTEN !!!
3662   // redraw micro level label, if needed
3663   if (!strEqual(level.name, NAMELESS_LEVEL_NAME) &&
3664       !strEqual(level.author, ANONYMOUS_NAME) &&
3665       !strEqual(level.author, leveldir_current->name) &&
3666       DelayReached(&label_delay))
3667   {
3668     int max_label_counter = 23;
3669
3670     if (leveldir_current->imported_from != NULL &&
3671         strlen(leveldir_current->imported_from) > 0)
3672       max_label_counter += 14;
3673     if (leveldir_current->imported_by != NULL &&
3674         strlen(leveldir_current->imported_by) > 0)
3675       max_label_counter += 14;
3676
3677     label_counter = (label_counter + 1) % max_label_counter;
3678     label_state = (label_counter >= 0 && label_counter <= 7 ?
3679                    MICROLABEL_LEVEL_NAME :
3680                    label_counter >= 9 && label_counter <= 12 ?
3681                    MICROLABEL_LEVEL_AUTHOR_HEAD :
3682                    label_counter >= 14 && label_counter <= 21 ?
3683                    MICROLABEL_LEVEL_AUTHOR :
3684                    label_counter >= 23 && label_counter <= 26 ?
3685                    MICROLABEL_IMPORTED_FROM_HEAD :
3686                    label_counter >= 28 && label_counter <= 35 ?
3687                    MICROLABEL_IMPORTED_FROM :
3688                    label_counter >= 37 && label_counter <= 40 ?
3689                    MICROLABEL_IMPORTED_BY_HEAD :
3690                    label_counter >= 42 && label_counter <= 49 ?
3691                    MICROLABEL_IMPORTED_BY : MICROLABEL_EMPTY);
3692
3693     if (leveldir_current->imported_from == NULL &&
3694         (label_state == MICROLABEL_IMPORTED_FROM_HEAD ||
3695          label_state == MICROLABEL_IMPORTED_FROM))
3696       label_state = (label_state == MICROLABEL_IMPORTED_FROM_HEAD ?
3697                      MICROLABEL_IMPORTED_BY_HEAD : MICROLABEL_IMPORTED_BY);
3698
3699     DrawPreviewLevelLabel(label_state);
3700   }
3701 }
3702
3703 void DrawPreviewPlayers(void)
3704 {
3705   if (game_status != GAME_MODE_MAIN)
3706     return;
3707
3708   // do not draw preview players if level preview redefined, but players aren't
3709   if (preview.redefined && !menu.main.preview_players.redefined)
3710     return;
3711
3712   boolean player_found[MAX_PLAYERS];
3713   int num_players = 0;
3714   int i, x, y;
3715
3716   for (i = 0; i < MAX_PLAYERS; i++)
3717     player_found[i] = FALSE;
3718
3719   // check which players can be found in the level (simple approach)
3720   for (x = 0; x < lev_fieldx; x++)
3721   {
3722     for (y = 0; y < lev_fieldy; y++)
3723     {
3724       int element = level.field[x][y];
3725
3726       if (IS_PLAYER_ELEMENT(element))
3727       {
3728         int player_nr = GET_PLAYER_NR(element);
3729
3730         player_nr = MIN(MAX(0, player_nr), MAX_PLAYERS - 1);
3731
3732         if (!player_found[player_nr])
3733           num_players++;
3734
3735         player_found[player_nr] = TRUE;
3736       }
3737     }
3738   }
3739
3740   struct TextPosInfo *pos = &menu.main.preview_players;
3741   int tile_size = pos->tile_size;
3742   int border_size = pos->border_size;
3743   int player_xoffset_raw = (pos->vertical ? 0 : tile_size + border_size);
3744   int player_yoffset_raw = (pos->vertical ? tile_size + border_size : 0);
3745   int player_xoffset = (pos->xoffset != -1 ? pos->xoffset : player_xoffset_raw);
3746   int player_yoffset = (pos->yoffset != -1 ? pos->yoffset : player_yoffset_raw);
3747   int max_players_width  = (MAX_PLAYERS - 1) * player_xoffset + tile_size;
3748   int max_players_height = (MAX_PLAYERS - 1) * player_yoffset + tile_size;
3749   int all_players_width  = (num_players - 1) * player_xoffset + tile_size;
3750   int all_players_height = (num_players - 1) * player_yoffset + tile_size;
3751   int max_xpos = SX + ALIGNED_XPOS(pos->x, max_players_width,  pos->align);
3752   int max_ypos = SY + ALIGNED_YPOS(pos->y, max_players_height, pos->valign);
3753   int xpos = SX + ALIGNED_XPOS(pos->x, all_players_width,  pos->align);
3754   int ypos = SY + ALIGNED_YPOS(pos->y, all_players_height, pos->valign);
3755
3756   // clear area in which the players will be drawn
3757   ClearRectangleOnBackground(drawto, max_xpos, max_ypos,
3758                              max_players_width, max_players_height);
3759
3760   if (!network.enabled && !setup.team_mode)
3761     return;
3762
3763   // only draw players if level is suited for team mode
3764   if (num_players < 2)
3765     return;
3766
3767   // draw all players that were found in the level
3768   for (i = 0; i < MAX_PLAYERS; i++)
3769   {
3770     if (player_found[i])
3771     {
3772       int graphic = el2img(EL_PLAYER_1 + i);
3773
3774       DrawSizedGraphicThruMaskExt(drawto, xpos, ypos, graphic, 0, tile_size);
3775
3776       xpos += player_xoffset;
3777       ypos += player_yoffset;
3778     }
3779   }
3780 }
3781
3782 void DrawPreviewLevelInitial(void)
3783 {
3784   DrawPreviewLevelExt(TRUE);
3785   DrawPreviewPlayers();
3786 }
3787
3788 void DrawPreviewLevelAnimation(void)
3789 {
3790   DrawPreviewLevelExt(FALSE);
3791 }
3792
3793 static void DrawNetworkPlayer(int x, int y, int player_nr, int tile_size,
3794                               int border_size, int font_nr)
3795 {
3796   int graphic = el2img(EL_PLAYER_1 + player_nr);
3797   int font_height = getFontHeight(font_nr);
3798   int player_height = MAX(tile_size, font_height);
3799   int xoffset_text = tile_size + border_size;
3800   int yoffset_text    = (player_height - font_height) / 2;
3801   int yoffset_graphic = (player_height - tile_size) / 2;
3802   char *player_name = getNetworkPlayerName(player_nr + 1);
3803
3804   DrawSizedGraphicThruMaskExt(drawto, x, y + yoffset_graphic, graphic, 0,
3805                               tile_size);
3806   DrawText(x + xoffset_text, y + yoffset_text, player_name, font_nr);
3807 }
3808
3809 static void DrawNetworkPlayersExt(boolean force)
3810 {
3811   if (game_status != GAME_MODE_MAIN)
3812     return;
3813
3814   if (!network.connected && !force)
3815     return;
3816
3817   // do not draw network players if level preview redefined, but players aren't
3818   if (preview.redefined && !menu.main.network_players.redefined)
3819     return;
3820
3821   int num_players = 0;
3822   int i;
3823
3824   for (i = 0; i < MAX_PLAYERS; i++)
3825     if (stored_player[i].connected_network)
3826       num_players++;
3827
3828   struct TextPosInfo *pos = &menu.main.network_players;
3829   int tile_size = pos->tile_size;
3830   int border_size = pos->border_size;
3831   int xoffset_text = tile_size + border_size;
3832   int font_nr = pos->font;
3833   int font_width = getFontWidth(font_nr);
3834   int font_height = getFontHeight(font_nr);
3835   int player_height = MAX(tile_size, font_height);
3836   int player_yoffset = player_height + border_size;
3837   int max_players_width = xoffset_text + MAX_PLAYER_NAME_LEN * font_width;
3838   int max_players_height = MAX_PLAYERS * player_yoffset - border_size;
3839   int all_players_height = num_players * player_yoffset - border_size;
3840   int max_xpos = SX + ALIGNED_XPOS(pos->x, max_players_width,  pos->align);
3841   int max_ypos = SY + ALIGNED_YPOS(pos->y, max_players_height, pos->valign);
3842   int ypos = SY + ALIGNED_YPOS(pos->y, all_players_height, pos->valign);
3843
3844   ClearRectangleOnBackground(drawto, max_xpos, max_ypos,
3845                              max_players_width, max_players_height);
3846
3847   // first draw local network player ...
3848   for (i = 0; i < MAX_PLAYERS; i++)
3849   {
3850     if (stored_player[i].connected_network &&
3851         stored_player[i].connected_locally)
3852     {
3853       char *player_name = getNetworkPlayerName(i + 1);
3854       int player_width = xoffset_text + getTextWidth(player_name, font_nr);
3855       int xpos = SX + ALIGNED_XPOS(pos->x, player_width,  pos->align);
3856
3857       DrawNetworkPlayer(xpos, ypos, i, tile_size, border_size, font_nr);
3858
3859       ypos += player_yoffset;
3860     }
3861   }
3862
3863   // ... then draw all other network players
3864   for (i = 0; i < MAX_PLAYERS; i++)
3865   {
3866     if (stored_player[i].connected_network &&
3867         !stored_player[i].connected_locally)
3868     {
3869       char *player_name = getNetworkPlayerName(i + 1);
3870       int player_width = xoffset_text + getTextWidth(player_name, font_nr);
3871       int xpos = SX + ALIGNED_XPOS(pos->x, player_width,  pos->align);
3872
3873       DrawNetworkPlayer(xpos, ypos, i, tile_size, border_size, font_nr);
3874
3875       ypos += player_yoffset;
3876     }
3877   }
3878 }
3879
3880 void DrawNetworkPlayers(void)
3881 {
3882   DrawNetworkPlayersExt(FALSE);
3883 }
3884
3885 void ClearNetworkPlayers(void)
3886 {
3887   DrawNetworkPlayersExt(TRUE);
3888 }
3889
3890 static void DrawGraphicAnimationExt(DrawBuffer *dst_bitmap, int x, int y,
3891                                     int graphic, int lx, int ly,
3892                                     int mask_mode)
3893 {
3894   int frame = getGraphicAnimationFrameXY(graphic, lx, ly);
3895
3896   if (mask_mode == USE_MASKING)
3897     DrawGraphicThruMaskExt(dst_bitmap, x, y, graphic, frame);
3898   else
3899     DrawGraphicExt(dst_bitmap, x, y, graphic, frame);
3900 }
3901
3902 void DrawFixedGraphicAnimationExt(DrawBuffer *dst_bitmap, int x, int y,
3903                                   int graphic, int sync_frame, int mask_mode)
3904 {
3905   int frame = getGraphicAnimationFrame(graphic, sync_frame);
3906
3907   if (mask_mode == USE_MASKING)
3908     DrawFixedGraphicThruMaskExt(dst_bitmap, x, y, graphic, frame);
3909   else
3910     DrawFixedGraphicExt(dst_bitmap, x, y, graphic, frame);
3911 }
3912
3913 void DrawSizedGraphicAnimationExt(DrawBuffer *dst_bitmap, int x, int y,
3914                                   int graphic, int sync_frame, int tilesize,
3915                                   int mask_mode)
3916 {
3917   int frame = getGraphicAnimationFrame(graphic, sync_frame);
3918
3919   if (mask_mode == USE_MASKING)
3920     DrawSizedGraphicThruMaskExt(dst_bitmap, x, y, graphic, frame, tilesize);
3921   else
3922     DrawSizedGraphicExt(dst_bitmap, x, y, graphic, frame, tilesize);
3923 }
3924
3925 static void DrawGraphicAnimation(int x, int y, int graphic)
3926 {
3927   int lx = LEVELX(x), ly = LEVELY(y);
3928   int mask_mode = NO_MASKING;
3929
3930   if (!IN_SCR_FIELD(x, y))
3931     return;
3932
3933   if (game.use_masked_elements)
3934   {
3935     if (Tile[lx][ly] != EL_EMPTY)
3936     {
3937       DrawScreenElementExt(x, y, 0, 0, EL_EMPTY, NO_CUTTING, NO_MASKING);
3938
3939       mask_mode = USE_MASKING;
3940     }
3941   }
3942
3943   DrawGraphicAnimationExt(drawto_field, FX + x * TILEX_VAR, FY + y * TILEY_VAR,
3944                           graphic, lx, ly, mask_mode);
3945
3946   MarkTileDirty(x, y);
3947 }
3948
3949 void DrawFixedGraphicAnimation(int x, int y, int graphic)
3950 {
3951   int lx = LEVELX(x), ly = LEVELY(y);
3952   int mask_mode = NO_MASKING;
3953
3954   if (!IN_SCR_FIELD(x, y))
3955     return;
3956
3957   if (game.use_masked_elements)
3958   {
3959     if (Tile[lx][ly] != EL_EMPTY)
3960     {
3961       DrawScreenElementExt(x, y, 0, 0, EL_EMPTY, NO_CUTTING, NO_MASKING);
3962
3963       mask_mode = USE_MASKING;
3964     }
3965   }
3966
3967   DrawGraphicAnimationExt(drawto_field, FX + x * TILEX, FY + y * TILEY,
3968                           graphic, lx, ly, mask_mode);
3969
3970   MarkTileDirty(x, y);
3971 }
3972
3973 void DrawLevelGraphicAnimation(int x, int y, int graphic)
3974 {
3975   DrawGraphicAnimation(SCREENX(x), SCREENY(y), graphic);
3976 }
3977
3978 void DrawLevelElementAnimation(int x, int y, int element)
3979 {
3980   int graphic = el_act_dir2img(element, GfxAction[x][y], GfxDir[x][y]);
3981
3982   DrawGraphicAnimation(SCREENX(x), SCREENY(y), graphic);
3983 }
3984
3985 void DrawLevelGraphicAnimationIfNeeded(int x, int y, int graphic)
3986 {
3987   int sx = SCREENX(x), sy = SCREENY(y);
3988
3989   if (!IN_LEV_FIELD(x, y) || !IN_SCR_FIELD(sx, sy))
3990     return;
3991
3992   if (Tile[x][y] == EL_EMPTY)
3993     graphic = el2img(GfxElementEmpty[x][y]);
3994
3995   if (!IS_NEW_FRAME(GfxFrame[x][y], graphic))
3996     return;
3997
3998   if (ANIM_MODE(graphic) & (ANIM_TILED | ANIM_RANDOM_STATIC))
3999     return;
4000
4001   DrawGraphicAnimation(sx, sy, graphic);
4002
4003 #if 1
4004   if (GFX_CRUMBLED(TILE_GFX_ELEMENT(x, y)))
4005     DrawLevelFieldCrumbled(x, y);
4006 #else
4007   if (GFX_CRUMBLED(Tile[x][y]))
4008     DrawLevelFieldCrumbled(x, y);
4009 #endif
4010 }
4011
4012 void DrawLevelElementAnimationIfNeeded(int x, int y, int element)
4013 {
4014   int sx = SCREENX(x), sy = SCREENY(y);
4015   int graphic;
4016
4017   if (!IN_LEV_FIELD(x, y) || !IN_SCR_FIELD(sx, sy))
4018     return;
4019
4020   graphic = el_act_dir2img(element, GfxAction[x][y], GfxDir[x][y]);
4021
4022   if (!IS_NEW_FRAME(GfxFrame[x][y], graphic))
4023     return;
4024
4025   DrawGraphicAnimation(sx, sy, graphic);
4026
4027   if (GFX_CRUMBLED(element))
4028     DrawLevelFieldCrumbled(x, y);
4029 }
4030
4031 static int getPlayerGraphic(struct PlayerInfo *player, int move_dir)
4032 {
4033   if (player->use_murphy)
4034   {
4035     // this works only because currently only one player can be "murphy" ...
4036     static int last_horizontal_dir = MV_LEFT;
4037     int graphic = el_act_dir2img(EL_SP_MURPHY, player->GfxAction, move_dir);
4038
4039     if (move_dir == MV_LEFT || move_dir == MV_RIGHT)
4040       last_horizontal_dir = move_dir;
4041
4042     if (graphic == IMG_SP_MURPHY)       // undefined => use special graphic
4043     {
4044       int direction = (player->is_snapping ? move_dir : last_horizontal_dir);
4045
4046       graphic = el_act_dir2img(EL_SP_MURPHY, player->GfxAction, direction);
4047     }
4048
4049     return graphic;
4050   }
4051   else
4052     return el_act_dir2img(player->artwork_element, player->GfxAction, move_dir);
4053 }
4054
4055 static boolean equalGraphics(int graphic1, int graphic2)
4056 {
4057   struct GraphicInfo *g1 = &graphic_info[graphic1];
4058   struct GraphicInfo *g2 = &graphic_info[graphic2];
4059
4060   return (g1->bitmap      == g2->bitmap &&
4061           g1->src_x       == g2->src_x &&
4062           g1->src_y       == g2->src_y &&
4063           g1->anim_frames == g2->anim_frames &&
4064           g1->anim_delay  == g2->anim_delay &&
4065           g1->anim_mode   == g2->anim_mode);
4066 }
4067
4068 #define DRAW_PLAYER_OVER_PUSHED_ELEMENT 1
4069
4070 enum
4071 {
4072   DRAW_PLAYER_STAGE_INIT = 0,
4073   DRAW_PLAYER_STAGE_LAST_FIELD,
4074   DRAW_PLAYER_STAGE_FIELD_UNDER_PLAYER,
4075 #if DRAW_PLAYER_OVER_PUSHED_ELEMENT
4076   DRAW_PLAYER_STAGE_ELEMENT_PUSHED,
4077   DRAW_PLAYER_STAGE_PLAYER,
4078 #else
4079   DRAW_PLAYER_STAGE_PLAYER,
4080   DRAW_PLAYER_STAGE_ELEMENT_PUSHED,
4081 #endif
4082   DRAW_PLAYER_STAGE_ELEMENT_OVER_PLAYER,
4083   DRAW_PLAYER_STAGE_FIELD_OVER_PLAYER,
4084
4085   NUM_DRAW_PLAYER_STAGES
4086 };
4087
4088 static void DrawPlayerExt(struct PlayerInfo *player, int drawing_stage)
4089 {
4090   static int static_last_player_graphic[MAX_PLAYERS];
4091   static int static_last_player_frame[MAX_PLAYERS];
4092   static boolean static_player_is_opaque[MAX_PLAYERS];
4093   static boolean draw_player[MAX_PLAYERS];
4094   int pnr = player->index_nr;
4095
4096   if (drawing_stage == DRAW_PLAYER_STAGE_INIT)
4097   {
4098     static_last_player_graphic[pnr] = getPlayerGraphic(player, player->MovDir);
4099     static_last_player_frame[pnr] = player->Frame;
4100     static_player_is_opaque[pnr] = FALSE;
4101
4102     draw_player[pnr] = TRUE;
4103   }
4104
4105   if (!draw_player[pnr])
4106     return;
4107
4108 #if DEBUG
4109   if (!IN_LEV_FIELD(player->jx, player->jy))
4110   {
4111     Debug("draw:DrawPlayerExt", "x = %d, y = %d", player->jx, player->jy);
4112     Debug("draw:DrawPlayerExt", "This should never happen!");
4113
4114     draw_player[pnr] = FALSE;
4115
4116     return;
4117   }
4118 #endif
4119
4120   int last_player_graphic  = static_last_player_graphic[pnr];
4121   int last_player_frame    = static_last_player_frame[pnr];
4122   boolean player_is_opaque = static_player_is_opaque[pnr];
4123
4124   int jx = player->jx;
4125   int jy = player->jy;
4126   int move_dir = (player->is_waiting ? player->dir_waiting : player->MovDir);
4127   int dx = (move_dir == MV_LEFT ? -1 : move_dir == MV_RIGHT ? +1 : 0);
4128   int dy = (move_dir == MV_UP   ? -1 : move_dir == MV_DOWN  ? +1 : 0);
4129   int last_jx = (player->is_moving ? jx - dx : jx);
4130   int last_jy = (player->is_moving ? jy - dy : jy);
4131   int next_jx = jx + dx;
4132   int next_jy = jy + dy;
4133   boolean player_is_moving = (player->MovPos != 0 ? TRUE : FALSE);
4134   int sx = SCREENX(jx);
4135   int sy = SCREENY(jy);
4136   int sxx = (move_dir == MV_LEFT || move_dir == MV_RIGHT ? player->GfxPos : 0);
4137   int syy = (move_dir == MV_UP   || move_dir == MV_DOWN  ? player->GfxPos : 0);
4138   int element = Tile[jx][jy];
4139   int last_element = Tile[last_jx][last_jy];
4140   int action = (player->is_pushing    ? ACTION_PUSHING         :
4141                 player->is_digging    ? ACTION_DIGGING         :
4142                 player->is_collecting ? ACTION_COLLECTING      :
4143                 player->is_moving     ? ACTION_MOVING          :
4144                 player->is_snapping   ? ACTION_SNAPPING        :
4145                 player->is_dropping   ? ACTION_DROPPING        :
4146                 player->is_waiting    ? player->action_waiting :
4147                 ACTION_DEFAULT);
4148
4149   if (drawing_stage == DRAW_PLAYER_STAGE_INIT)
4150   {
4151     // ------------------------------------------------------------------------
4152     // initialize drawing the player
4153     // ------------------------------------------------------------------------
4154
4155     draw_player[pnr] = FALSE;
4156
4157     // GfxElement[][] is set to the element the player is digging or collecting;
4158     // remove also for off-screen player if the player is not moving anymore
4159     if (IN_LEV_FIELD(jx, jy) && !player_is_moving)
4160       GfxElement[jx][jy] = EL_UNDEFINED;
4161
4162     if (!player->active || !IN_SCR_FIELD(SCREENX(last_jx), SCREENY(last_jy)))
4163       return;
4164
4165     if (element == EL_EXPLOSION)
4166       return;
4167
4168     InitPlayerGfxAnimation(player, action, move_dir);
4169
4170     draw_player[pnr] = TRUE;
4171   }
4172   else if (drawing_stage == DRAW_PLAYER_STAGE_LAST_FIELD)
4173   {
4174     // ------------------------------------------------------------------------
4175     // draw things in the field the player is leaving, if needed
4176     // ------------------------------------------------------------------------
4177
4178     if (!IN_SCR_FIELD(sx, sy))
4179       draw_player[pnr] = FALSE;
4180
4181     if (!player->is_moving)
4182       return;
4183
4184     if (Back[last_jx][last_jy] && IS_DRAWABLE(last_element))
4185     {
4186       DrawLevelElement(last_jx, last_jy, Back[last_jx][last_jy]);
4187
4188       if (last_element == EL_DYNAMITE_ACTIVE ||
4189           last_element == EL_EM_DYNAMITE_ACTIVE ||
4190           last_element == EL_SP_DISK_RED_ACTIVE)
4191         DrawDynamite(last_jx, last_jy);
4192       else
4193         DrawLevelFieldThruMask(last_jx, last_jy);
4194     }
4195     else if (last_element == EL_DYNAMITE_ACTIVE ||
4196              last_element == EL_EM_DYNAMITE_ACTIVE ||
4197              last_element == EL_SP_DISK_RED_ACTIVE)
4198       DrawDynamite(last_jx, last_jy);
4199     else
4200       DrawLevelField(last_jx, last_jy);
4201   }
4202   else if (drawing_stage == DRAW_PLAYER_STAGE_FIELD_UNDER_PLAYER)
4203   {
4204     // ------------------------------------------------------------------------
4205     // draw things behind the player, if needed
4206     // ------------------------------------------------------------------------
4207
4208     if (Back[jx][jy])
4209     {
4210       DrawLevelElement(jx, jy, Back[jx][jy]);
4211
4212       return;
4213     }
4214
4215     if (IS_ACTIVE_BOMB(element))
4216     {
4217       DrawLevelElement(jx, jy, EL_EMPTY);
4218
4219       return;
4220     }
4221
4222     if (player_is_moving && GfxElement[jx][jy] != EL_UNDEFINED)
4223     {
4224       int old_element = GfxElement[jx][jy];
4225       int old_graphic = el_act_dir2img(old_element, action, move_dir);
4226       int frame = getGraphicAnimationFrame(old_graphic, player->StepFrame);
4227
4228       if (GFX_CRUMBLED(old_element))
4229         DrawLevelFieldCrumbledDigging(jx, jy, move_dir, player->StepFrame);
4230       else
4231         DrawScreenGraphic(sx, sy, old_graphic, frame);
4232
4233       if (graphic_info[old_graphic].anim_mode & ANIM_OPAQUE_PLAYER)
4234         static_player_is_opaque[pnr] = TRUE;
4235     }
4236     else
4237     {
4238       GfxElement[jx][jy] = EL_UNDEFINED;
4239
4240       // make sure that pushed elements are drawn with correct frame rate
4241       int graphic = el_act_dir2img(element, ACTION_PUSHING, move_dir);
4242
4243       if (player->is_pushing && player->is_moving && !IS_ANIM_MODE_CE(graphic))
4244         GfxFrame[jx][jy] = player->StepFrame;
4245
4246       DrawLevelField(jx, jy);
4247     }
4248   }
4249   else if (drawing_stage == DRAW_PLAYER_STAGE_ELEMENT_PUSHED)
4250   {
4251     // ------------------------------------------------------------------------
4252     // draw things the player is pushing, if needed
4253     // ------------------------------------------------------------------------
4254
4255     if (!player->is_pushing || !player->is_moving)
4256       return;
4257
4258     if (Tile[next_jx][next_jy] == EL_EXPLOSION)
4259       return;
4260
4261     int gfx_frame = GfxFrame[jx][jy];
4262
4263     if (!IS_MOVING(jx, jy))             // push movement already finished
4264     {
4265       element = Tile[next_jx][next_jy];
4266       gfx_frame = GfxFrame[next_jx][next_jy];
4267     }
4268
4269     int graphic = el_act_dir2img(element, ACTION_PUSHING, move_dir);
4270     int sync_frame = (IS_ANIM_MODE_CE(graphic) ? gfx_frame : player->StepFrame);
4271     int frame = getGraphicAnimationFrame(graphic, sync_frame);
4272
4273     // draw background element under pushed element (like the Sokoban field)
4274     if (game.use_masked_pushing && IS_MOVING(jx, jy))
4275     {
4276       // this allows transparent pushing animation over non-black background
4277
4278       if (Back[jx][jy])
4279         DrawLevelElement(jx, jy, Back[jx][jy]);
4280       else
4281         DrawLevelElement(jx, jy, EL_EMPTY);
4282     }
4283
4284     if (Back[next_jx][next_jy])
4285       DrawLevelElement(next_jx, next_jy, Back[next_jx][next_jy]);
4286     else
4287       DrawLevelElement(next_jx, next_jy, EL_EMPTY);
4288
4289     int px = SCREENX(jx), py = SCREENY(jy);
4290     int pxx = (TILEX - ABS(sxx)) * dx;
4291     int pyy = (TILEY - ABS(syy)) * dy;
4292
4293 #if 1
4294     // do not draw (EM style) pushing animation when pushing is finished
4295     // (two-tile animations usually do not contain start and end frame)
4296     if (graphic_info[graphic].double_movement && !IS_MOVING(jx, jy))
4297       DrawLevelElement(next_jx, next_jy, Tile[next_jx][next_jy]);
4298     else
4299       DrawGraphicShiftedThruMask(px, py, pxx, pyy, graphic, frame, NO_CUTTING);
4300 #else
4301     // masked drawing is needed for EMC style (double) movement graphics
4302     // !!! (ONLY WHEN DRAWING PUSHED ELEMENT OVER THE PLAYER) !!!
4303     DrawGraphicShiftedThruMask(px, py, pxx, pyy, graphic, frame, NO_CUTTING);
4304 #endif
4305   }
4306   else if (drawing_stage == DRAW_PLAYER_STAGE_PLAYER)
4307   {
4308     // ------------------------------------------------------------------------
4309     // draw player himself
4310     // ------------------------------------------------------------------------
4311
4312     int graphic = getPlayerGraphic(player, move_dir);
4313
4314     // in the case of changed player action or direction, prevent the current
4315     // animation frame from being restarted for identical animations
4316     if (player->Frame == 0 && equalGraphics(graphic, last_player_graphic))
4317       player->Frame = last_player_frame;
4318
4319     int frame = getGraphicAnimationFrame(graphic, player->Frame);
4320
4321     if (player_is_opaque)
4322       DrawGraphicShifted(sx,sy, sxx,syy, graphic, frame, NO_CUTTING,NO_MASKING);
4323     else
4324       DrawGraphicShiftedThruMask(sx, sy, sxx, syy, graphic, frame, NO_CUTTING);
4325
4326     if (SHIELD_ON(player))
4327     {
4328       graphic = (player->shield_deadly_time_left ? IMG_SHIELD_DEADLY_ACTIVE :
4329                  IMG_SHIELD_NORMAL_ACTIVE);
4330       frame = getGraphicAnimationFrame(graphic, -1);
4331
4332       DrawGraphicShiftedThruMask(sx, sy, sxx, syy, graphic, frame, NO_CUTTING);
4333     }
4334   }
4335   else if (drawing_stage == DRAW_PLAYER_STAGE_ELEMENT_OVER_PLAYER)
4336   {
4337     // ------------------------------------------------------------------------
4338     // draw things in front of player (active dynamite or dynabombs)
4339     // ------------------------------------------------------------------------
4340
4341     if (IS_ACTIVE_BOMB(element))
4342     {
4343       int graphic = el2img(element);
4344       int frame = getGraphicAnimationFrameXY(graphic, jx, jy);
4345
4346       if (game.emulation == EMU_SUPAPLEX)
4347         DrawGraphic(sx, sy, IMG_SP_DISK_RED, frame);
4348       else
4349         DrawGraphicThruMask(sx, sy, graphic, frame);
4350     }
4351
4352     if (player_is_moving && last_element == EL_EXPLOSION)
4353     {
4354       int element = (GfxElement[last_jx][last_jy] != EL_UNDEFINED ?
4355                      GfxElement[last_jx][last_jy] :  EL_EMPTY);
4356       int graphic = el_act2img(element, ACTION_EXPLODING);
4357       int delay = (game.emulation == EMU_SUPAPLEX ? 3 : 2);
4358       int phase = ExplodePhase[last_jx][last_jy] - 1;
4359       int frame = getGraphicAnimationFrame(graphic, phase - delay);
4360
4361       if (phase >= delay)
4362         DrawGraphicThruMask(SCREENX(last_jx), SCREENY(last_jy), graphic, frame);
4363     }
4364   }
4365   else if (drawing_stage == DRAW_PLAYER_STAGE_FIELD_OVER_PLAYER)
4366   {
4367     // ------------------------------------------------------------------------
4368     // draw elements the player is just walking/passing through/under
4369     // ------------------------------------------------------------------------
4370
4371     if (player_is_moving)
4372     {
4373       // handle the field the player is leaving ...
4374       if (IS_ACCESSIBLE_INSIDE(last_element))
4375         DrawLevelField(last_jx, last_jy);
4376       else if (IS_ACCESSIBLE_UNDER(last_element))
4377         DrawLevelFieldThruMask(last_jx, last_jy);
4378     }
4379
4380     // do not redraw accessible elements if the player is just pushing them
4381     if (!player_is_moving || !player->is_pushing)
4382     {
4383       // ... and the field the player is entering
4384       if (IS_ACCESSIBLE_INSIDE(element))
4385         DrawLevelField(jx, jy);
4386       else if (IS_ACCESSIBLE_UNDER(element))
4387         DrawLevelFieldThruMask(jx, jy);
4388     }
4389
4390     MarkTileDirty(sx, sy);
4391   }
4392 }
4393
4394 void DrawPlayer(struct PlayerInfo *player)
4395 {
4396   int i;
4397
4398   for (i = 0; i < NUM_DRAW_PLAYER_STAGES; i++)
4399     DrawPlayerExt(player, i);
4400 }
4401
4402 void DrawAllPlayers(void)
4403 {
4404   int i, j;
4405
4406   for (i = 0; i < NUM_DRAW_PLAYER_STAGES; i++)
4407     for (j = 0; j < MAX_PLAYERS; j++)
4408       if (stored_player[j].active)
4409         DrawPlayerExt(&stored_player[j], i);
4410 }
4411
4412 void DrawPlayerField(int x, int y)
4413 {
4414   if (!IS_PLAYER(x, y))
4415     return;
4416
4417   DrawPlayer(PLAYERINFO(x, y));
4418 }
4419
4420 // ----------------------------------------------------------------------------
4421
4422 void WaitForEventToContinue(void)
4423 {
4424   boolean first_wait = TRUE;
4425   boolean still_wait = TRUE;
4426
4427   if (program.headless)
4428     return;
4429
4430   // simulate releasing mouse button over last gadget, if still pressed
4431   if (button_status)
4432     HandleGadgets(-1, -1, 0);
4433
4434   button_status = MB_RELEASED;
4435
4436   ClearEventQueue();
4437   ClearPlayerAction();
4438
4439   while (still_wait)
4440   {
4441     Event event;
4442
4443     if (NextValidEvent(&event))
4444     {
4445       switch (event.type)
4446       {
4447         case EVENT_BUTTONPRESS:
4448         case EVENT_FINGERPRESS:
4449           first_wait = FALSE;
4450           break;
4451
4452         case EVENT_BUTTONRELEASE:
4453         case EVENT_FINGERRELEASE:
4454           still_wait = first_wait;
4455           break;
4456
4457         case EVENT_KEYPRESS:
4458         case SDL_CONTROLLERBUTTONDOWN:
4459         case SDL_JOYBUTTONDOWN:
4460           still_wait = FALSE;
4461           break;
4462
4463         default:
4464           HandleOtherEvents(&event);
4465           break;
4466       }
4467     }
4468     else if (AnyJoystickButton() == JOY_BUTTON_NEW_PRESSED)
4469     {
4470       still_wait = FALSE;
4471     }
4472
4473     if (!PendingEvent())
4474       BackToFront();
4475   }
4476 }
4477
4478 #define MAX_REQUEST_LINES               13
4479 #define MAX_REQUEST_LINE_FONT1_LEN      7
4480 #define MAX_REQUEST_LINE_FONT2_LEN      10
4481
4482 static int RequestHandleEvents(unsigned int req_state, int draw_buffer_game)
4483 {
4484   boolean game_ended = (game_status == GAME_MODE_PLAYING && checkGameEnded());
4485   int draw_buffer_last = GetDrawtoField();
4486   int width  = request.width;
4487   int height = request.height;
4488   int sx, sy;
4489   int result;
4490
4491   setRequestPosition(&sx, &sy, FALSE);
4492
4493   button_status = MB_RELEASED;
4494
4495   request_gadget_id = -1;
4496   result = -1;
4497
4498   while (result < 0)
4499   {
4500     if (game_ended)
4501     {
4502       SetDrawtoField(draw_buffer_game);
4503
4504       HandleGameActions();
4505
4506       SetDrawtoField(DRAW_TO_BACKBUFFER);
4507     }
4508
4509     if (PendingEvent())
4510     {
4511       Event event;
4512
4513       while (NextValidEvent(&event))
4514       {
4515         switch (event.type)
4516         {
4517           case EVENT_BUTTONPRESS:
4518           case EVENT_BUTTONRELEASE:
4519           case EVENT_MOTIONNOTIFY:
4520           {
4521             DrawBuffer *drawto_last = drawto;
4522             int mx, my;
4523
4524             if (event.type == EVENT_MOTIONNOTIFY)
4525             {
4526               if (!button_status)
4527                 continue;
4528
4529               motion_status = TRUE;
4530               mx = ((MotionEvent *) &event)->x;
4531               my = ((MotionEvent *) &event)->y;
4532             }
4533             else
4534             {
4535               motion_status = FALSE;
4536               mx = ((ButtonEvent *) &event)->x;
4537               my = ((ButtonEvent *) &event)->y;
4538               if (event.type == EVENT_BUTTONPRESS)
4539                 button_status = ((ButtonEvent *) &event)->button;
4540               else
4541                 button_status = MB_RELEASED;
4542             }
4543
4544             if (global.use_envelope_request)
4545             {
4546               // draw changed button states to temporary bitmap
4547               drawto = bitmap_db_store_1;
4548             }
4549
4550             // this sets 'request_gadget_id'
4551             HandleGadgets(mx, my, button_status);
4552
4553             if (global.use_envelope_request)
4554             {
4555               // restore pointer to drawing buffer
4556               drawto = drawto_last;
4557
4558               // prepare complete envelope request from temporary bitmap
4559               PrepareEnvelopeRequestToScreen(bitmap_db_store_1, sx, sy,
4560                                              width, height);
4561             }
4562
4563             switch (request_gadget_id)
4564             {
4565               case TOOL_CTRL_ID_YES:
4566               case TOOL_CTRL_ID_TOUCH_YES:
4567                 result = TRUE;
4568                 break;
4569               case TOOL_CTRL_ID_NO:
4570               case TOOL_CTRL_ID_TOUCH_NO:
4571                 result = FALSE;
4572                 break;
4573               case TOOL_CTRL_ID_CONFIRM:
4574               case TOOL_CTRL_ID_TOUCH_CONFIRM:
4575                 result = TRUE | FALSE;
4576                 break;
4577
4578               case TOOL_CTRL_ID_PLAYER_1:
4579                 result = 1;
4580                 break;
4581               case TOOL_CTRL_ID_PLAYER_2:
4582                 result = 2;
4583                 break;
4584               case TOOL_CTRL_ID_PLAYER_3:
4585                 result = 3;
4586                 break;
4587               case TOOL_CTRL_ID_PLAYER_4:
4588                 result = 4;
4589                 break;
4590
4591               default:
4592                 // only check clickable animations if no request gadget clicked
4593                 HandleGlobalAnimClicks(mx, my, button_status, FALSE);
4594                 break;
4595             }
4596
4597             break;
4598           }
4599
4600           case SDL_WINDOWEVENT:
4601             HandleWindowEvent((WindowEvent *) &event);
4602             break;
4603
4604           case SDL_APP_WILLENTERBACKGROUND:
4605           case SDL_APP_DIDENTERBACKGROUND:
4606           case SDL_APP_WILLENTERFOREGROUND:
4607           case SDL_APP_DIDENTERFOREGROUND:
4608             HandlePauseResumeEvent((PauseResumeEvent *) &event);
4609             break;
4610
4611           case EVENT_KEYPRESS:
4612           {
4613             Key key = GetEventKey((KeyEvent *)&event);
4614
4615             switch (key)
4616             {
4617               case KSYM_space:
4618                 if (req_state & REQ_CONFIRM)
4619                   result = 1;
4620                 break;
4621
4622               case KSYM_Return:
4623               case KSYM_y:
4624               case KSYM_Y:
4625               case KSYM_Select:
4626               case KSYM_Menu:
4627 #if defined(KSYM_Rewind)
4628               case KSYM_Rewind:         // for Amazon Fire TV remote
4629 #endif
4630                 result = 1;
4631                 break;
4632
4633               case KSYM_Escape:
4634               case KSYM_n:
4635               case KSYM_N:
4636               case KSYM_Back:
4637 #if defined(KSYM_FastForward)
4638               case KSYM_FastForward:    // for Amazon Fire TV remote
4639 #endif
4640                 result = 0;
4641                 break;
4642
4643               default:
4644                 HandleKeysDebug(key, KEY_PRESSED);
4645                 break;
4646             }
4647
4648             if (req_state & REQ_PLAYER)
4649             {
4650               int old_player_nr = setup.network_player_nr;
4651
4652               if (result != -1)
4653                 result = old_player_nr + 1;
4654
4655               switch (key)
4656               {
4657                 case KSYM_space:
4658                   result = old_player_nr + 1;
4659                   break;
4660
4661                 case KSYM_Up:
4662                 case KSYM_1:
4663                   result = 1;
4664                   break;
4665
4666                 case KSYM_Right:
4667                 case KSYM_2:
4668                   result = 2;
4669                   break;
4670
4671                 case KSYM_Down:
4672                 case KSYM_3:
4673                   result = 3;
4674                   break;
4675
4676                 case KSYM_Left:
4677                 case KSYM_4:
4678                   result = 4;
4679                   break;
4680
4681                 default:
4682                   break;
4683               }
4684             }
4685
4686             break;
4687           }
4688
4689           case EVENT_FINGERRELEASE:
4690           case EVENT_KEYRELEASE:
4691             ClearPlayerAction();
4692             break;
4693
4694           case SDL_CONTROLLERBUTTONDOWN:
4695             switch (event.cbutton.button)
4696             {
4697               case SDL_CONTROLLER_BUTTON_A:
4698               case SDL_CONTROLLER_BUTTON_X:
4699               case SDL_CONTROLLER_BUTTON_LEFTSHOULDER:
4700               case SDL_CONTROLLER_BUTTON_LEFTSTICK:
4701                 result = 1;
4702                 break;
4703
4704               case SDL_CONTROLLER_BUTTON_B:
4705               case SDL_CONTROLLER_BUTTON_Y:
4706               case SDL_CONTROLLER_BUTTON_RIGHTSHOULDER:
4707               case SDL_CONTROLLER_BUTTON_RIGHTSTICK:
4708               case SDL_CONTROLLER_BUTTON_BACK:
4709                 result = 0;
4710                 break;
4711             }
4712
4713             if (req_state & REQ_PLAYER)
4714             {
4715               int old_player_nr = setup.network_player_nr;
4716
4717               if (result != -1)
4718                 result = old_player_nr + 1;
4719
4720               switch (event.cbutton.button)
4721               {
4722                 case SDL_CONTROLLER_BUTTON_DPAD_UP:
4723                 case SDL_CONTROLLER_BUTTON_Y:
4724                   result = 1;
4725                   break;
4726
4727                 case SDL_CONTROLLER_BUTTON_DPAD_RIGHT:
4728                 case SDL_CONTROLLER_BUTTON_B:
4729                   result = 2;
4730                   break;
4731
4732                 case SDL_CONTROLLER_BUTTON_DPAD_DOWN:
4733                 case SDL_CONTROLLER_BUTTON_A:
4734                   result = 3;
4735                   break;
4736
4737                 case SDL_CONTROLLER_BUTTON_DPAD_LEFT:
4738                 case SDL_CONTROLLER_BUTTON_X:
4739                   result = 4;
4740                   break;
4741
4742                 default:
4743                   break;
4744               }
4745             }
4746
4747             break;
4748
4749           case SDL_CONTROLLERBUTTONUP:
4750             HandleJoystickEvent(&event);
4751             ClearPlayerAction();
4752             break;
4753
4754           default:
4755             HandleOtherEvents(&event);
4756             break;
4757         }
4758       }
4759     }
4760     else if (AnyJoystickButton() == JOY_BUTTON_NEW_PRESSED)
4761     {
4762       int joy = AnyJoystick();
4763
4764       if (joy & JOY_BUTTON_1)
4765         result = 1;
4766       else if (joy & JOY_BUTTON_2)
4767         result = 0;
4768     }
4769     else if (AnyJoystick())
4770     {
4771       int joy = AnyJoystick();
4772
4773       if (req_state & REQ_PLAYER)
4774       {
4775         if (joy & JOY_UP)
4776           result = 1;
4777         else if (joy & JOY_RIGHT)
4778           result = 2;
4779         else if (joy & JOY_DOWN)
4780           result = 3;
4781         else if (joy & JOY_LEFT)
4782           result = 4;
4783       }
4784     }
4785
4786     BackToFront();
4787   }
4788
4789   SetDrawtoField(draw_buffer_last);
4790
4791   return result;
4792 }
4793
4794 static void DoRequestBefore(void)
4795 {
4796   if (game_status == GAME_MODE_PLAYING)
4797     BlitScreenToBitmap(backbuffer);
4798
4799   // disable deactivated drawing when quick-loading level tape recording
4800   if (tape.playing && tape.deactivate_display)
4801     TapeDeactivateDisplayOff(TRUE);
4802
4803   SetMouseCursor(CURSOR_DEFAULT);
4804
4805   // pause network game while waiting for request to answer
4806   if (network.enabled &&
4807       game_status == GAME_MODE_PLAYING &&
4808       !game.all_players_gone)
4809     SendToServer_PausePlaying();
4810
4811   // simulate releasing mouse button over last gadget, if still pressed
4812   if (button_status)
4813     HandleGadgets(-1, -1, 0);
4814
4815   UnmapAllGadgets();
4816 }
4817
4818 static void DoRequestAfter(void)
4819 {
4820   RemapAllGadgets();
4821
4822   if (game_status == GAME_MODE_PLAYING)
4823   {
4824     SetPanelBackground();
4825     SetDrawBackgroundMask(REDRAW_DOOR_1);
4826   }
4827   else
4828   {
4829     SetDrawBackgroundMask(REDRAW_FIELD);
4830   }
4831
4832   // continue network game after request
4833   if (network.enabled &&
4834       game_status == GAME_MODE_PLAYING &&
4835       !game.all_players_gone)
4836     SendToServer_ContinuePlaying();
4837
4838   // restore deactivated drawing when quick-loading level tape recording
4839   if (tape.playing && tape.deactivate_display)
4840     TapeDeactivateDisplayOn();
4841 }
4842
4843 static boolean RequestDoor(char *text, unsigned int req_state)
4844 {
4845   int draw_buffer_last = GetDrawtoField();
4846   unsigned int old_door_state = GetDoorState();
4847   int max_request_line_len = MAX_REQUEST_LINE_FONT1_LEN;
4848   int font_nr = FONT_TEXT_2;
4849   char *text_ptr;
4850   int result;
4851   int ty;
4852
4853   if (maxWordLengthInRequestString(text) > MAX_REQUEST_LINE_FONT1_LEN)
4854   {
4855     max_request_line_len = MAX_REQUEST_LINE_FONT2_LEN;
4856     font_nr = FONT_TEXT_1;
4857   }
4858
4859   DoRequestBefore();
4860
4861   if (old_door_state & DOOR_OPEN_1)
4862   {
4863     CloseDoor(DOOR_CLOSE_1);
4864
4865     // save old door content
4866     BlitBitmap(bitmap_db_door_1, bitmap_db_door_1,
4867                0, 0, DXSIZE, DYSIZE, DXSIZE, 0);
4868   }
4869
4870   SetDoorBackgroundImage(IMG_BACKGROUND_DOOR);
4871   SetDrawBackgroundMask(REDRAW_FIELD | REDRAW_DOOR_1);
4872
4873   // clear door drawing field
4874   DrawBackground(DX, DY, DXSIZE, DYSIZE);
4875
4876   // force DOOR font inside door area
4877   SetFontStatus(GAME_MODE_PSEUDO_DOOR);
4878
4879   // write text for request
4880   for (text_ptr = text, ty = 0; ty < MAX_REQUEST_LINES; ty++)
4881   {
4882     char text_line[max_request_line_len + 1];
4883     int tx, tl, tc = 0;
4884
4885     if (!*text_ptr)
4886       break;
4887
4888     for (tl = 0, tx = 0; tx < max_request_line_len; tl++, tx++)
4889     {
4890       tc = *(text_ptr + tx);
4891       if (!tc || tc == ' ' || tc == '?' || tc == '!')
4892         break;
4893     }
4894
4895     if ((tc == '?' || tc == '!') && tl == 0)
4896       tl = 1;
4897
4898     if (!tl)
4899     {
4900       text_ptr++;
4901       ty--;
4902       continue;
4903     }
4904
4905     strncpy(text_line, text_ptr, tl);
4906     text_line[tl] = 0;
4907
4908     DrawText(DX + (DXSIZE - tl * getFontWidth(font_nr)) / 2,
4909              DY + 8 + ty * (getFontHeight(font_nr) + 2),
4910              text_line, font_nr);
4911
4912     text_ptr += tl + (tc == ' ' ? 1 : 0);
4913   }
4914
4915   ResetFontStatus();
4916
4917   MapToolButtons(req_state);
4918
4919   // copy request gadgets to door backbuffer
4920   BlitBitmap(drawto, bitmap_db_door_1, DX, DY, DXSIZE, DYSIZE, 0, 0);
4921
4922   OpenDoor(DOOR_OPEN_1);
4923
4924   // ---------- handle request buttons ----------
4925   result = RequestHandleEvents(req_state, draw_buffer_last);
4926
4927   UnmapToolButtons();
4928
4929   if (!(req_state & REQ_STAY_OPEN))
4930   {
4931     CloseDoor(DOOR_CLOSE_1);
4932
4933     if (((old_door_state & DOOR_OPEN_1) && !(req_state & REQ_STAY_CLOSED)) ||
4934         (req_state & REQ_REOPEN))
4935       OpenDoor(DOOR_OPEN_1 | DOOR_COPY_BACK);
4936   }
4937
4938   DoRequestAfter();
4939
4940   return result;
4941 }
4942
4943 static boolean RequestEnvelope(char *text, unsigned int req_state)
4944 {
4945   int draw_buffer_last = GetDrawtoField();
4946   int result;
4947
4948   DoRequestBefore();
4949
4950   DrawEnvelopeRequest(text, req_state);
4951   ShowEnvelopeRequest(text, req_state, ACTION_OPENING);
4952
4953   // ---------- handle request buttons ----------
4954   result = RequestHandleEvents(req_state, draw_buffer_last);
4955
4956   UnmapToolButtons();
4957
4958   ShowEnvelopeRequest(text, req_state, ACTION_CLOSING);
4959
4960   DoRequestAfter();
4961
4962   return result;
4963 }
4964
4965 boolean Request(char *text, unsigned int req_state)
4966 {
4967   boolean game_ended = (game_status == GAME_MODE_PLAYING && checkGameEnded());
4968   boolean overlay_enabled = GetOverlayEnabled();
4969   boolean result;
4970
4971   // when showing request dialog after game ended, deactivate game panel
4972   if (game_ended)
4973     game.panel.active = FALSE;
4974
4975   game.request_active = TRUE;
4976
4977   SetOverlayEnabled(FALSE);
4978
4979   if (global.use_envelope_request)
4980     result = RequestEnvelope(text, req_state);
4981   else
4982     result = RequestDoor(text, req_state);
4983
4984   SetOverlayEnabled(overlay_enabled);
4985
4986   game.request_active = FALSE;
4987
4988   return result;
4989 }
4990
4991 static int compareDoorPartOrderInfo(const void *object1, const void *object2)
4992 {
4993   const struct DoorPartOrderInfo *dpo1 = (struct DoorPartOrderInfo *)object1;
4994   const struct DoorPartOrderInfo *dpo2 = (struct DoorPartOrderInfo *)object2;
4995   int compare_result;
4996
4997   if (dpo1->sort_priority != dpo2->sort_priority)
4998     compare_result = dpo1->sort_priority - dpo2->sort_priority;
4999   else
5000     compare_result = dpo1->nr - dpo2->nr;
5001
5002   return compare_result;
5003 }
5004
5005 void InitGraphicCompatibilityInfo_Doors(void)
5006 {
5007   struct
5008   {
5009     int door_token;
5010     int part_1, part_8;
5011     struct DoorInfo *door;
5012   }
5013   doors[] =
5014   {
5015     { DOOR_1,   IMG_GFX_DOOR_1_PART_1,  IMG_GFX_DOOR_1_PART_8,  &door_1 },
5016     { DOOR_2,   IMG_GFX_DOOR_2_PART_1,  IMG_GFX_DOOR_2_PART_8,  &door_2 },
5017
5018     { -1,       -1,                     -1,                     NULL    }
5019   };
5020   struct Rect door_rect_list[] =
5021   {
5022     { DX, DY, DXSIZE, DYSIZE },
5023     { VX, VY, VXSIZE, VYSIZE }
5024   };
5025   int i, j;
5026
5027   for (i = 0; doors[i].door_token != -1; i++)
5028   {
5029     int door_token = doors[i].door_token;
5030     int door_index = DOOR_INDEX_FROM_TOKEN(door_token);
5031     int part_1 = doors[i].part_1;
5032     int part_8 = doors[i].part_8;
5033     int part_2 = part_1 + 1;
5034     int part_3 = part_1 + 2;
5035     struct DoorInfo *door = doors[i].door;
5036     struct Rect *door_rect = &door_rect_list[door_index];
5037     boolean door_gfx_redefined = FALSE;
5038
5039     // check if any door part graphic definitions have been redefined
5040
5041     for (j = 0; door_part_controls[j].door_token != -1; j++)
5042     {
5043       struct DoorPartControlInfo *dpc = &door_part_controls[j];
5044       struct FileInfo *fi = getImageListEntryFromImageID(dpc->graphic);
5045
5046       if (dpc->door_token == door_token && fi->redefined)
5047         door_gfx_redefined = TRUE;
5048     }
5049
5050     // check for old-style door graphic/animation modifications
5051
5052     if (!door_gfx_redefined)
5053     {
5054       if (door->anim_mode & ANIM_STATIC_PANEL)
5055       {
5056         door->panel.step_xoffset = 0;
5057         door->panel.step_yoffset = 0;
5058       }
5059
5060       if (door->anim_mode & (ANIM_HORIZONTAL | ANIM_VERTICAL))
5061       {
5062         struct GraphicInfo *g_part_1 = &graphic_info[part_1];
5063         struct GraphicInfo *g_part_2 = &graphic_info[part_2];
5064         int num_door_steps, num_panel_steps;
5065
5066         // remove door part graphics other than the two default wings
5067
5068         for (j = 0; door_part_controls[j].door_token != -1; j++)
5069         {
5070           struct DoorPartControlInfo *dpc = &door_part_controls[j];
5071           struct GraphicInfo *g = &graphic_info[dpc->graphic];
5072
5073           if (dpc->graphic >= part_3 &&
5074               dpc->graphic <= part_8)
5075             g->bitmap = NULL;
5076         }
5077
5078         // set graphics and screen positions of the default wings
5079
5080         g_part_1->width  = door_rect->width;
5081         g_part_1->height = door_rect->height;
5082         g_part_2->width  = door_rect->width;
5083         g_part_2->height = door_rect->height;
5084         g_part_2->src_x = door_rect->width;
5085         g_part_2->src_y = g_part_1->src_y;
5086
5087         door->part_2.x = door->part_1.x;
5088         door->part_2.y = door->part_1.y;
5089
5090         if (door->width != -1)
5091         {
5092           g_part_1->width = door->width;
5093           g_part_2->width = door->width;
5094
5095           // special treatment for graphics and screen position of right wing
5096           g_part_2->src_x += door_rect->width - door->width;
5097           door->part_2.x  += door_rect->width - door->width;
5098         }
5099
5100         if (door->height != -1)
5101         {
5102           g_part_1->height = door->height;
5103           g_part_2->height = door->height;
5104
5105           // special treatment for graphics and screen position of bottom wing
5106           g_part_2->src_y += door_rect->height - door->height;
5107           door->part_2.y  += door_rect->height - door->height;
5108         }
5109
5110         // set animation delays for the default wings and panels
5111
5112         door->part_1.step_delay = door->step_delay;
5113         door->part_2.step_delay = door->step_delay;
5114         door->panel.step_delay  = door->step_delay;
5115
5116         // set animation draw order for the default wings
5117
5118         door->part_1.sort_priority = 2; // draw left wing over ...
5119         door->part_2.sort_priority = 1; //          ... right wing
5120
5121         // set animation draw offset for the default wings
5122
5123         if (door->anim_mode & ANIM_HORIZONTAL)
5124         {
5125           door->part_1.step_xoffset = door->step_offset;
5126           door->part_1.step_yoffset = 0;
5127           door->part_2.step_xoffset = door->step_offset * -1;
5128           door->part_2.step_yoffset = 0;
5129
5130           num_door_steps = g_part_1->width / door->step_offset;
5131         }
5132         else    // ANIM_VERTICAL
5133         {
5134           door->part_1.step_xoffset = 0;
5135           door->part_1.step_yoffset = door->step_offset;
5136           door->part_2.step_xoffset = 0;
5137           door->part_2.step_yoffset = door->step_offset * -1;
5138
5139           num_door_steps = g_part_1->height / door->step_offset;
5140         }
5141
5142         // set animation draw offset for the default panels
5143
5144         if (door->step_offset > 1)
5145         {
5146           num_panel_steps = 2 * door_rect->height / door->step_offset;
5147           door->panel.start_step = num_panel_steps - num_door_steps;
5148           door->panel.start_step_closing = door->panel.start_step;
5149         }
5150         else
5151         {
5152           num_panel_steps = door_rect->height / door->step_offset;
5153           door->panel.start_step = num_panel_steps - num_door_steps / 2;
5154           door->panel.start_step_closing = door->panel.start_step;
5155           door->panel.step_delay *= 2;
5156         }
5157       }
5158     }
5159   }
5160 }
5161
5162 void InitDoors(void)
5163 {
5164   int i;
5165
5166   for (i = 0; door_part_controls[i].door_token != -1; i++)
5167   {
5168     struct DoorPartControlInfo *dpc = &door_part_controls[i];
5169     struct DoorPartOrderInfo *dpo = &door_part_order[i];
5170
5171     // initialize "start_step_opening" and "start_step_closing", if needed
5172     if (dpc->pos->start_step_opening == 0 &&
5173         dpc->pos->start_step_closing == 0)
5174     {
5175       // dpc->pos->start_step_opening = dpc->pos->start_step;
5176       dpc->pos->start_step_closing = dpc->pos->start_step;
5177     }
5178
5179     // fill structure for door part draw order (sorted below)
5180     dpo->nr = i;
5181     dpo->sort_priority = dpc->pos->sort_priority;
5182   }
5183
5184   // sort door part controls according to sort_priority and graphic number
5185   qsort(door_part_order, MAX_DOOR_PARTS,
5186         sizeof(struct DoorPartOrderInfo), compareDoorPartOrderInfo);
5187 }
5188
5189 unsigned int OpenDoor(unsigned int door_state)
5190 {
5191   if (door_state & DOOR_COPY_BACK)
5192   {
5193     if (door_state & DOOR_OPEN_1)
5194       BlitBitmap(bitmap_db_door_1, bitmap_db_door_1,
5195                  1 * DXSIZE, 0, DXSIZE, DYSIZE, 0 * DXSIZE, 0);
5196
5197     if (door_state & DOOR_OPEN_2)
5198       BlitBitmap(bitmap_db_door_2, bitmap_db_door_2,
5199                  1 * VXSIZE, 0, VXSIZE, VYSIZE, 0 * VXSIZE, 0);
5200
5201     door_state &= ~DOOR_COPY_BACK;
5202   }
5203
5204   return MoveDoor(door_state);
5205 }
5206
5207 unsigned int CloseDoor(unsigned int door_state)
5208 {
5209   unsigned int old_door_state = GetDoorState();
5210
5211   if (!(door_state & DOOR_NO_COPY_BACK))
5212   {
5213     if (old_door_state & DOOR_OPEN_1)
5214       BlitBitmap(backbuffer, bitmap_db_door_1,
5215                  DX, DY, DXSIZE, DYSIZE, 0, 0);
5216
5217     if (old_door_state & DOOR_OPEN_2)
5218       BlitBitmap(backbuffer, bitmap_db_door_2,
5219                  VX, VY, VXSIZE, VYSIZE, 0, 0);
5220
5221     door_state &= ~DOOR_NO_COPY_BACK;
5222   }
5223
5224   return MoveDoor(door_state);
5225 }
5226
5227 unsigned int GetDoorState(void)
5228 {
5229   return MoveDoor(DOOR_GET_STATE);
5230 }
5231
5232 unsigned int SetDoorState(unsigned int door_state)
5233 {
5234   return MoveDoor(door_state | DOOR_SET_STATE);
5235 }
5236
5237 static int euclid(int a, int b)
5238 {
5239   return (b ? euclid(b, a % b) : a);
5240 }
5241
5242 unsigned int MoveDoor(unsigned int door_state)
5243 {
5244   struct Rect door_rect_list[] =
5245   {
5246     { DX, DY, DXSIZE, DYSIZE },
5247     { VX, VY, VXSIZE, VYSIZE }
5248   };
5249   static int door1 = DOOR_CLOSE_1;
5250   static int door2 = DOOR_CLOSE_2;
5251   DelayCounter door_delay = { 0 };
5252   int i;
5253
5254   if (door_state == DOOR_GET_STATE)
5255     return (door1 | door2);
5256
5257   if (door_state & DOOR_SET_STATE)
5258   {
5259     if (door_state & DOOR_ACTION_1)
5260       door1 = door_state & DOOR_ACTION_1;
5261     if (door_state & DOOR_ACTION_2)
5262       door2 = door_state & DOOR_ACTION_2;
5263
5264     return (door1 | door2);
5265   }
5266
5267   if (!(door_state & DOOR_FORCE_REDRAW))
5268   {
5269     if (door1 == DOOR_OPEN_1 && door_state & DOOR_OPEN_1)
5270       door_state &= ~DOOR_OPEN_1;
5271     else if (door1 == DOOR_CLOSE_1 && door_state & DOOR_CLOSE_1)
5272       door_state &= ~DOOR_CLOSE_1;
5273     if (door2 == DOOR_OPEN_2 && door_state & DOOR_OPEN_2)
5274       door_state &= ~DOOR_OPEN_2;
5275     else if (door2 == DOOR_CLOSE_2 && door_state & DOOR_CLOSE_2)
5276       door_state &= ~DOOR_CLOSE_2;
5277   }
5278
5279   if (global.autoplay_leveldir)
5280   {
5281     door_state |= DOOR_NO_DELAY;
5282     door_state &= ~DOOR_CLOSE_ALL;
5283   }
5284
5285   if (game_status == GAME_MODE_EDITOR && !(door_state & DOOR_FORCE_ANIM))
5286     door_state |= DOOR_NO_DELAY;
5287
5288   if (door_state & DOOR_ACTION)
5289   {
5290     boolean game_ended = (game_status == GAME_MODE_PLAYING && checkGameEnded());
5291     boolean door_panel_drawn[NUM_DOORS];
5292     boolean panel_has_doors[NUM_DOORS];
5293     boolean door_part_skip[MAX_DOOR_PARTS];
5294     boolean door_part_done[MAX_DOOR_PARTS];
5295     boolean door_part_done_all;
5296     int num_steps[MAX_DOOR_PARTS];
5297     int max_move_delay = 0;     // delay for complete animations of all doors
5298     int max_step_delay = 0;     // delay (ms) between two animation frames
5299     int num_move_steps = 0;     // number of animation steps for all doors
5300     int max_move_delay_doors_only = 0;  // delay for doors only (no panel)
5301     int num_move_steps_doors_only = 0;  // steps for doors only (no panel)
5302     int start = 0;
5303     int k;
5304
5305     for (i = 0; i < NUM_DOORS; i++)
5306       panel_has_doors[i] = FALSE;
5307
5308     for (i = 0; i < MAX_DOOR_PARTS; i++)
5309     {
5310       struct DoorPartControlInfo *dpc = &door_part_controls[i];
5311       struct GraphicInfo *g = &graphic_info[dpc->graphic];
5312       int door_token = dpc->door_token;
5313
5314       door_part_done[i] = FALSE;
5315       door_part_skip[i] = (!(door_state & door_token) ||
5316                            !g->bitmap);
5317     }
5318
5319     for (i = 0; i < MAX_DOOR_PARTS; i++)
5320     {
5321       int nr = door_part_order[i].nr;
5322       struct DoorPartControlInfo *dpc = &door_part_controls[nr];
5323       struct DoorPartPosInfo *pos = dpc->pos;
5324       struct GraphicInfo *g = &graphic_info[dpc->graphic];
5325       int door_token = dpc->door_token;
5326       int door_index = DOOR_INDEX_FROM_TOKEN(door_token);
5327       boolean is_panel = DOOR_PART_IS_PANEL(nr);
5328       int step_xoffset = ABS(pos->step_xoffset);
5329       int step_yoffset = ABS(pos->step_yoffset);
5330       int step_delay = pos->step_delay;
5331       int current_door_state = door_state & door_token;
5332       boolean door_opening = ((current_door_state & DOOR_OPEN)  != 0);
5333       boolean door_closing = ((current_door_state & DOOR_CLOSE) != 0);
5334       boolean part_opening = (is_panel ? door_closing : door_opening);
5335       int start_step = (part_opening ? pos->start_step_opening :
5336                         pos->start_step_closing);
5337       float move_xsize = (step_xoffset ? g->width  : 0);
5338       float move_ysize = (step_yoffset ? g->height : 0);
5339       int move_xsteps = (step_xoffset ? ceil(move_xsize / step_xoffset) : 0);
5340       int move_ysteps = (step_yoffset ? ceil(move_ysize / step_yoffset) : 0);
5341       int move_steps = (move_xsteps && move_ysteps ?
5342                         MIN(move_xsteps, move_ysteps) :
5343                         move_xsteps ? move_xsteps : move_ysteps) - start_step;
5344       int move_delay = move_steps * step_delay;
5345
5346       if (door_part_skip[nr])
5347         continue;
5348
5349       max_move_delay = MAX(max_move_delay, move_delay);
5350       max_step_delay = (max_step_delay == 0 ? step_delay :
5351                         euclid(max_step_delay, step_delay));
5352       num_steps[nr] = move_steps;
5353
5354       if (!is_panel)
5355       {
5356         max_move_delay_doors_only = MAX(max_move_delay_doors_only, move_delay);
5357
5358         panel_has_doors[door_index] = TRUE;
5359       }
5360     }
5361
5362     max_step_delay = MAX(1, max_step_delay);    // prevent division by zero
5363
5364     num_move_steps = max_move_delay / max_step_delay;
5365     num_move_steps_doors_only = max_move_delay_doors_only / max_step_delay;
5366
5367     door_delay.value = max_step_delay;
5368
5369     if ((door_state & DOOR_NO_DELAY) || setup.quick_doors)
5370     {
5371       start = num_move_steps - 1;
5372     }
5373     else
5374     {
5375       // opening door sound has priority over simultaneously closing door
5376       if (door_state & (DOOR_OPEN_1 | DOOR_OPEN_2))
5377       {
5378         PlayMenuSoundStereo(SND_DOOR_OPENING, SOUND_MIDDLE);
5379
5380         if (door_state & DOOR_OPEN_1)
5381           PlayMenuSoundStereo(SND_DOOR_1_OPENING, SOUND_MIDDLE);
5382         if (door_state & DOOR_OPEN_2)
5383           PlayMenuSoundStereo(SND_DOOR_2_OPENING, SOUND_MIDDLE);
5384       }
5385       else if (door_state & (DOOR_CLOSE_1 | DOOR_CLOSE_2))
5386       {
5387         PlayMenuSoundStereo(SND_DOOR_CLOSING, SOUND_MIDDLE);
5388
5389         if (door_state & DOOR_CLOSE_1)
5390           PlayMenuSoundStereo(SND_DOOR_1_CLOSING, SOUND_MIDDLE);
5391         if (door_state & DOOR_CLOSE_2)
5392           PlayMenuSoundStereo(SND_DOOR_2_CLOSING, SOUND_MIDDLE);
5393       }
5394     }
5395
5396     for (k = start; k < num_move_steps; k++)
5397     {
5398       int last_frame = num_move_steps - 1;      // last frame of this "for" loop
5399
5400       door_part_done_all = TRUE;
5401
5402       for (i = 0; i < NUM_DOORS; i++)
5403         door_panel_drawn[i] = FALSE;
5404
5405       for (i = 0; i < MAX_DOOR_PARTS; i++)
5406       {
5407         int nr = door_part_order[i].nr;
5408         struct DoorPartControlInfo *dpc = &door_part_controls[nr];
5409         struct DoorPartPosInfo *pos = dpc->pos;
5410         struct GraphicInfo *g = &graphic_info[dpc->graphic];
5411         int door_token = dpc->door_token;
5412         int door_index = DOOR_INDEX_FROM_TOKEN(door_token);
5413         boolean is_panel = DOOR_PART_IS_PANEL(nr);
5414         boolean is_panel_and_door_has_closed = FALSE;
5415         struct Rect *door_rect = &door_rect_list[door_index];
5416         Bitmap *bitmap_db_door = (door_token == DOOR_1 ? bitmap_db_door_1 :
5417                                   bitmap_db_door_2);
5418         Bitmap *bitmap = (is_panel ? bitmap_db_door : g->bitmap);
5419         int current_door_state = door_state & door_token;
5420         boolean door_opening = ((current_door_state & DOOR_OPEN)  != 0);
5421         boolean door_closing = !door_opening;
5422         boolean part_opening = (is_panel ? door_closing : door_opening);
5423         boolean part_closing = !part_opening;
5424         int start_step = (part_opening ? pos->start_step_opening :
5425                           pos->start_step_closing);
5426         int step_delay = pos->step_delay;
5427         int step_factor = step_delay / max_step_delay;
5428         int k1 = (step_factor ? k / step_factor + 1 : k);
5429         int k2 = (part_opening ? k1 + start_step : num_steps[nr] - k1);
5430         int kk = MAX(0, k2);
5431         int g_src_x = 0;
5432         int g_src_y = 0;
5433         int src_x, src_y, src_xx, src_yy;
5434         int dst_x, dst_y, dst_xx, dst_yy;
5435         int width, height;
5436
5437         if (door_part_skip[nr])
5438           continue;
5439
5440         if (!(door_state & door_token))
5441           continue;
5442
5443         if (!g->bitmap)
5444           continue;
5445
5446         if (!is_panel)
5447         {
5448           int k2_door = (door_opening ? k : num_move_steps_doors_only - k - 1);
5449           int kk_door = MAX(0, k2_door);
5450           int sync_frame = kk_door * door_delay.value;
5451           int frame = getGraphicAnimationFrame(dpc->graphic, sync_frame);
5452
5453           getFixedGraphicSource(dpc->graphic, frame, &bitmap,
5454                                 &g_src_x, &g_src_y);
5455         }
5456
5457         // draw door panel
5458
5459         if (!door_panel_drawn[door_index])
5460         {
5461           ClearRectangle(drawto, door_rect->x, door_rect->y,
5462                          door_rect->width, door_rect->height);
5463
5464           door_panel_drawn[door_index] = TRUE;
5465         }
5466
5467         // draw opening or closing door parts
5468
5469         if (pos->step_xoffset < 0)      // door part on right side
5470         {
5471           src_xx = 0;
5472           dst_xx = pos->x + ABS(kk * pos->step_xoffset);
5473           width = g->width;
5474
5475           if (dst_xx + width > door_rect->width)
5476             width = door_rect->width - dst_xx;
5477         }
5478         else                            // door part on left side
5479         {
5480           src_xx = 0;
5481           dst_xx = pos->x - kk * pos->step_xoffset;
5482
5483           if (dst_xx < 0)
5484           {
5485             src_xx = ABS(dst_xx);
5486             dst_xx = 0;
5487           }
5488
5489           width = g->width - src_xx;
5490
5491           if (width > door_rect->width)
5492             width = door_rect->width;
5493
5494           // Debug("tools:MoveDoor", "k == %d [%d]", k, start_step);
5495         }
5496
5497         if (pos->step_yoffset < 0)      // door part on bottom side
5498         {
5499           src_yy = 0;
5500           dst_yy = pos->y + ABS(kk * pos->step_yoffset);
5501           height = g->height;
5502
5503           if (dst_yy + height > door_rect->height)
5504             height = door_rect->height - dst_yy;
5505         }
5506         else                            // door part on top side
5507         {
5508           src_yy = 0;
5509           dst_yy = pos->y - kk * pos->step_yoffset;
5510
5511           if (dst_yy < 0)
5512           {
5513             src_yy = ABS(dst_yy);
5514             dst_yy = 0;
5515           }
5516
5517           height = g->height - src_yy;
5518         }
5519
5520         src_x = g_src_x + src_xx;
5521         src_y = g_src_y + src_yy;
5522
5523         dst_x = door_rect->x + dst_xx;
5524         dst_y = door_rect->y + dst_yy;
5525
5526         is_panel_and_door_has_closed =
5527           (is_panel &&
5528            door_closing &&
5529            panel_has_doors[door_index] &&
5530            k >= num_move_steps_doors_only - 1);
5531
5532         if (width  >= 0 && width  <= g->width &&
5533             height >= 0 && height <= g->height &&
5534             !is_panel_and_door_has_closed)
5535         {
5536           if (is_panel || !pos->draw_masked)
5537             BlitBitmap(bitmap, drawto, src_x, src_y, width, height,
5538                        dst_x, dst_y);
5539           else
5540             BlitBitmapMasked(bitmap, drawto, src_x, src_y, width, height,
5541                              dst_x, dst_y);
5542         }
5543
5544         redraw_mask |= REDRAW_DOOR_FROM_TOKEN(door_token);
5545
5546         if ((part_opening && (width < 0         || height < 0)) ||
5547             (part_closing && (width >= g->width && height >= g->height)))
5548           door_part_done[nr] = TRUE;
5549
5550         // continue door part animations, but not panel after door has closed
5551         if (!door_part_done[nr] && !is_panel_and_door_has_closed)
5552           door_part_done_all = FALSE;
5553       }
5554
5555       if (!(door_state & DOOR_NO_DELAY))
5556       {
5557         if (game_ended)
5558           HandleGameActions();
5559
5560         BackToFront();
5561
5562         SkipUntilDelayReached(&door_delay, &k, last_frame);
5563
5564         // prevent OS (Windows) from complaining about program not responding
5565         CheckQuitEvent();
5566       }
5567
5568       if (door_part_done_all)
5569         break;
5570     }
5571
5572     if (!(door_state & DOOR_NO_DELAY))
5573     {
5574       // wait for specified door action post delay
5575       if (door_state & DOOR_ACTION_1 && door_state & DOOR_ACTION_2)
5576         door_delay.value = MAX(door_1.post_delay, door_2.post_delay);
5577       else if (door_state & DOOR_ACTION_1)
5578         door_delay.value = door_1.post_delay;
5579       else if (door_state & DOOR_ACTION_2)
5580         door_delay.value = door_2.post_delay;
5581
5582       while (!DelayReached(&door_delay))
5583       {
5584         if (game_ended)
5585           HandleGameActions();
5586
5587         BackToFront();
5588       }
5589     }
5590   }
5591
5592   if (door_state & DOOR_ACTION_1)
5593     door1 = door_state & DOOR_ACTION_1;
5594   if (door_state & DOOR_ACTION_2)
5595     door2 = door_state & DOOR_ACTION_2;
5596
5597   // draw masked border over door area
5598   DrawMaskedBorder(REDRAW_DOOR_1);
5599   DrawMaskedBorder(REDRAW_DOOR_2);
5600
5601   ClearAutoRepeatKeyEvents();
5602
5603   return (door1 | door2);
5604 }
5605
5606 static boolean useSpecialEditorDoor(void)
5607 {
5608   int graphic = IMG_GLOBAL_BORDER_EDITOR;
5609   boolean redefined = getImageListEntryFromImageID(graphic)->redefined;
5610
5611   // do not draw special editor door if editor border defined or redefined
5612   if (graphic_info[graphic].bitmap != NULL || redefined)
5613     return FALSE;
5614
5615   // do not draw special editor door if global border defined to be empty
5616   if (graphic_info[IMG_GLOBAL_BORDER].bitmap == NULL)
5617     return FALSE;
5618
5619   // do not draw special editor door if viewport definitions do not match
5620   if (EX != VX ||
5621       EY >= VY ||
5622       EXSIZE != VXSIZE ||
5623       EY + EYSIZE != VY + VYSIZE)
5624     return FALSE;
5625
5626   return TRUE;
5627 }
5628
5629 void DrawSpecialEditorDoor(void)
5630 {
5631   struct GraphicInfo *gfx1 = &graphic_info[IMG_DOOR_2_TOP_BORDER_CORRECTION];
5632   int top_border_width = gfx1->width;
5633   int top_border_height = gfx1->height;
5634   int outer_border = viewport.door_2[GAME_MODE_EDITOR].border_size;
5635   int ex = EX - outer_border;
5636   int ey = EY - outer_border;
5637   int vy = VY - outer_border;
5638   int exsize = EXSIZE + 2 * outer_border;
5639
5640   if (!useSpecialEditorDoor())
5641     return;
5642
5643   // draw bigger level editor toolbox window
5644   BlitBitmap(gfx1->bitmap, drawto, gfx1->src_x, gfx1->src_y,
5645              top_border_width, top_border_height, ex, ey - top_border_height);
5646   BlitBitmap(graphic_info[IMG_GLOBAL_BORDER].bitmap, drawto, ex, vy,
5647              exsize, EYSIZE - VYSIZE + outer_border, ex, ey);
5648
5649   redraw_mask |= REDRAW_ALL;
5650 }
5651
5652 void UndrawSpecialEditorDoor(void)
5653 {
5654   struct GraphicInfo *gfx1 = &graphic_info[IMG_DOOR_2_TOP_BORDER_CORRECTION];
5655   int top_border_width = gfx1->width;
5656   int top_border_height = gfx1->height;
5657   int outer_border = viewport.door_2[GAME_MODE_EDITOR].border_size;
5658   int ex = EX - outer_border;
5659   int ey = EY - outer_border;
5660   int ey_top = ey - top_border_height;
5661   int exsize = EXSIZE + 2 * outer_border;
5662   int eysize = EYSIZE + 2 * outer_border;
5663
5664   if (!useSpecialEditorDoor())
5665     return;
5666
5667   // draw normal tape recorder window
5668   if (graphic_info[IMG_GLOBAL_BORDER].bitmap)
5669   {
5670     BlitBitmap(graphic_info[IMG_GLOBAL_BORDER].bitmap, drawto,
5671                ex, ey_top, top_border_width, top_border_height,
5672                ex, ey_top);
5673     BlitBitmap(graphic_info[IMG_GLOBAL_BORDER].bitmap, drawto,
5674                ex, ey, exsize, eysize, ex, ey);
5675   }
5676   else
5677   {
5678     // if screen background is set to "[NONE]", clear editor toolbox window
5679     ClearRectangle(drawto, ex, ey_top, top_border_width, top_border_height);
5680     ClearRectangle(drawto, ex, ey, exsize, eysize);
5681   }
5682
5683   redraw_mask |= REDRAW_ALL;
5684 }
5685
5686
5687 // ---------- new tool button stuff -------------------------------------------
5688
5689 static struct
5690 {
5691   int graphic;
5692   struct TextPosInfo *pos;
5693   int gadget_id;
5694   boolean is_touch_button;
5695   char *infotext;
5696 } toolbutton_info[NUM_TOOL_BUTTONS] =
5697 {
5698   {
5699     IMG_GFX_REQUEST_BUTTON_YES,         &request.button.yes,
5700     TOOL_CTRL_ID_YES, FALSE,            "yes"
5701   },
5702   {
5703     IMG_GFX_REQUEST_BUTTON_NO,          &request.button.no,
5704     TOOL_CTRL_ID_NO, FALSE,             "no"
5705   },
5706   {
5707     IMG_GFX_REQUEST_BUTTON_CONFIRM,     &request.button.confirm,
5708     TOOL_CTRL_ID_CONFIRM, FALSE,        "confirm"
5709   },
5710   {
5711     IMG_GFX_REQUEST_BUTTON_PLAYER_1,    &request.button.player_1,
5712     TOOL_CTRL_ID_PLAYER_1, FALSE,       "player 1"
5713   },
5714   {
5715     IMG_GFX_REQUEST_BUTTON_PLAYER_2,    &request.button.player_2,
5716     TOOL_CTRL_ID_PLAYER_2, FALSE,       "player 2"
5717   },
5718   {
5719     IMG_GFX_REQUEST_BUTTON_PLAYER_3,    &request.button.player_3,
5720     TOOL_CTRL_ID_PLAYER_3, FALSE,       "player 3"
5721   },
5722   {
5723     IMG_GFX_REQUEST_BUTTON_PLAYER_4,    &request.button.player_4,
5724     TOOL_CTRL_ID_PLAYER_4, FALSE,       "player 4"
5725   },
5726   {
5727     IMG_GFX_REQUEST_BUTTON_TOUCH_YES,   &request.button.touch_yes,
5728     TOOL_CTRL_ID_TOUCH_YES, TRUE,       "yes"
5729   },
5730   {
5731     IMG_GFX_REQUEST_BUTTON_TOUCH_NO,    &request.button.touch_no,
5732     TOOL_CTRL_ID_TOUCH_NO, TRUE,        "no"
5733   },
5734   {
5735     IMG_GFX_REQUEST_BUTTON_TOUCH_CONFIRM, &request.button.touch_confirm,
5736     TOOL_CTRL_ID_TOUCH_CONFIRM, TRUE,   "confirm"
5737   }
5738 };
5739
5740 void CreateToolButtons(void)
5741 {
5742   int i;
5743
5744   for (i = 0; i < NUM_TOOL_BUTTONS; i++)
5745   {
5746     int graphic = toolbutton_info[i].graphic;
5747     struct GraphicInfo *gfx = &graphic_info[graphic];
5748     struct TextPosInfo *pos = toolbutton_info[i].pos;
5749     struct GadgetInfo *gi;
5750     Bitmap *deco_bitmap = None;
5751     int deco_x = 0, deco_y = 0, deco_xpos = 0, deco_ypos = 0;
5752     unsigned int event_mask = GD_EVENT_RELEASED;
5753     boolean is_touch_button = toolbutton_info[i].is_touch_button;
5754     int base_x = (is_touch_button ? 0 : DX);
5755     int base_y = (is_touch_button ? 0 : DY);
5756     int gd_x = gfx->src_x;
5757     int gd_y = gfx->src_y;
5758     int gd_xp = gfx->src_x + gfx->pressed_xoffset;
5759     int gd_yp = gfx->src_y + gfx->pressed_yoffset;
5760     int x = pos->x;
5761     int y = pos->y;
5762     int id = i;
5763
5764     // do not use touch buttons if overlay touch buttons are disabled
5765     if (is_touch_button && !setup.touch.overlay_buttons)
5766       continue;
5767
5768     if (global.use_envelope_request && !is_touch_button)
5769     {
5770       setRequestPosition(&base_x, &base_y, TRUE);
5771
5772       // check if request buttons are outside of envelope and fix, if needed
5773       if (x < 0 || x + gfx->width  > request.width ||
5774           y < 0 || y + gfx->height > request.height)
5775       {
5776         if (id == TOOL_CTRL_ID_YES)
5777         {
5778           x = 0;
5779           y = request.height - 2 * request.border_size - gfx->height;
5780         }
5781         else if (id == TOOL_CTRL_ID_NO)
5782         {
5783           x = request.width  - 2 * request.border_size - gfx->width;
5784           y = request.height - 2 * request.border_size - gfx->height;
5785         }
5786         else if (id == TOOL_CTRL_ID_CONFIRM)
5787         {
5788           x = (request.width - 2 * request.border_size - gfx->width) / 2;
5789           y = request.height - 2 * request.border_size - gfx->height;
5790         }
5791         else if (id >= TOOL_CTRL_ID_PLAYER_1 && id <= TOOL_CTRL_ID_PLAYER_4)
5792         {
5793           int player_nr = id - TOOL_CTRL_ID_PLAYER_1;
5794
5795           x = (request.width - 2 * request.border_size - gfx->width) / 2;
5796           y = request.height - 2 * request.border_size - gfx->height * 2;
5797
5798           x += (player_nr == 3 ? -1 : player_nr == 1 ? +1 : 0) * gfx->width;
5799           y += (player_nr == 0 ? -1 : player_nr == 2 ? +1 : 0) * gfx->height;
5800         }
5801       }
5802     }
5803
5804     if (id >= TOOL_CTRL_ID_PLAYER_1 && id <= TOOL_CTRL_ID_PLAYER_4 &&
5805         pos->draw_player)
5806     {
5807       int player_nr = id - TOOL_CTRL_ID_PLAYER_1;
5808
5809       getSizedGraphicSource(PLAYER_NR_GFX(IMG_PLAYER_1, player_nr), 0,
5810                             pos->size, &deco_bitmap, &deco_x, &deco_y);
5811       deco_xpos = (gfx->width  - pos->size) / 2;
5812       deco_ypos = (gfx->height - pos->size) / 2;
5813     }
5814
5815     gi = CreateGadget(GDI_CUSTOM_ID, id,
5816                       GDI_IMAGE_ID, graphic,
5817                       GDI_INFO_TEXT, toolbutton_info[i].infotext,
5818                       GDI_X, base_x + x,
5819                       GDI_Y, base_y + y,
5820                       GDI_WIDTH, gfx->width,
5821                       GDI_HEIGHT, gfx->height,
5822                       GDI_TYPE, GD_TYPE_NORMAL_BUTTON,
5823                       GDI_STATE, GD_BUTTON_UNPRESSED,
5824                       GDI_DESIGN_UNPRESSED, gfx->bitmap, gd_x, gd_y,
5825                       GDI_DESIGN_PRESSED, gfx->bitmap, gd_xp, gd_yp,
5826                       GDI_DECORATION_DESIGN, deco_bitmap, deco_x, deco_y,
5827                       GDI_DECORATION_POSITION, deco_xpos, deco_ypos,
5828                       GDI_DECORATION_SIZE, pos->size, pos->size,
5829                       GDI_DECORATION_SHIFTING, 1, 1,
5830                       GDI_DIRECT_DRAW, FALSE,
5831                       GDI_OVERLAY_TOUCH_BUTTON, is_touch_button,
5832                       GDI_EVENT_MASK, event_mask,
5833                       GDI_CALLBACK_ACTION, HandleToolButtons,
5834                       GDI_END);
5835
5836     if (gi == NULL)
5837       Fail("cannot create gadget");
5838
5839     tool_gadget[id] = gi;
5840   }
5841 }
5842
5843 void FreeToolButtons(void)
5844 {
5845   int i;
5846
5847   for (i = 0; i < NUM_TOOL_BUTTONS; i++)
5848     FreeGadget(tool_gadget[i]);
5849 }
5850
5851 static void MapToolButtons(unsigned int req_state)
5852 {
5853   if (req_state & REQ_ASK)
5854   {
5855     MapGadget(tool_gadget[TOOL_CTRL_ID_YES]);
5856     MapGadget(tool_gadget[TOOL_CTRL_ID_NO]);
5857     MapGadget(tool_gadget[TOOL_CTRL_ID_TOUCH_YES]);
5858     MapGadget(tool_gadget[TOOL_CTRL_ID_TOUCH_NO]);
5859   }
5860   else if (req_state & REQ_CONFIRM)
5861   {
5862     MapGadget(tool_gadget[TOOL_CTRL_ID_CONFIRM]);
5863     MapGadget(tool_gadget[TOOL_CTRL_ID_TOUCH_CONFIRM]);
5864   }
5865   else if (req_state & REQ_PLAYER)
5866   {
5867     MapGadget(tool_gadget[TOOL_CTRL_ID_PLAYER_1]);
5868     MapGadget(tool_gadget[TOOL_CTRL_ID_PLAYER_2]);
5869     MapGadget(tool_gadget[TOOL_CTRL_ID_PLAYER_3]);
5870     MapGadget(tool_gadget[TOOL_CTRL_ID_PLAYER_4]);
5871   }
5872 }
5873
5874 static void UnmapToolButtons(void)
5875 {
5876   int i;
5877
5878   for (i = 0; i < NUM_TOOL_BUTTONS; i++)
5879     UnmapGadget(tool_gadget[i]);
5880 }
5881
5882 static void HandleToolButtons(struct GadgetInfo *gi)
5883 {
5884   request_gadget_id = gi->custom_id;
5885 }
5886
5887 static struct Mapping_EM_to_RND_object
5888 {
5889   int element_em;
5890   boolean is_rnd_to_em_mapping;         // unique mapping EM <-> RND
5891   boolean is_backside;                  // backside of moving element
5892
5893   int element_rnd;
5894   int action;
5895   int direction;
5896 }
5897 em_object_mapping_list[GAME_TILE_MAX + 1] =
5898 {
5899   {
5900     Zborder,                            FALSE,  FALSE,
5901     EL_EMPTY,                           -1, -1
5902   },
5903   {
5904     Zplayer,                            FALSE,  FALSE,
5905     EL_EMPTY,                           -1, -1
5906   },
5907
5908   {
5909     Zbug,                               FALSE,  FALSE,
5910     EL_EMPTY,                           -1, -1
5911   },
5912   {
5913     Ztank,                              FALSE,  FALSE,
5914     EL_EMPTY,                           -1, -1
5915   },
5916   {
5917     Zeater,                             FALSE,  FALSE,
5918     EL_EMPTY,                           -1, -1
5919   },
5920   {
5921     Zdynamite,                          FALSE,  FALSE,
5922     EL_EMPTY,                           -1, -1
5923   },
5924   {
5925     Zboom,                              FALSE,  FALSE,
5926     EL_EMPTY,                           -1, -1
5927   },
5928
5929   {
5930     Xchain,                             FALSE,  FALSE,
5931     EL_DEFAULT,                         ACTION_EXPLODING, -1
5932   },
5933   {
5934     Xboom_bug,                          FALSE,  FALSE,
5935     EL_BUG,                             ACTION_EXPLODING, -1
5936   },
5937   {
5938     Xboom_tank,                         FALSE,  FALSE,
5939     EL_SPACESHIP,                       ACTION_EXPLODING, -1
5940   },
5941   {
5942     Xboom_android,                      FALSE,  FALSE,
5943     EL_EMC_ANDROID,                     ACTION_OTHER, -1
5944   },
5945   {
5946     Xboom_1,                            FALSE,  FALSE,
5947     EL_DEFAULT,                         ACTION_EXPLODING, -1
5948   },
5949   {
5950     Xboom_2,                            FALSE,  FALSE,
5951     EL_DEFAULT,                         ACTION_EXPLODING, -1
5952   },
5953
5954   {
5955     Xblank,                             TRUE,   FALSE,
5956     EL_EMPTY,                           -1, -1
5957   },
5958
5959   {
5960     Xsplash_e,                          FALSE,  FALSE,
5961     EL_ACID_SPLASH_RIGHT,               -1, -1
5962   },
5963   {
5964     Xsplash_w,                          FALSE,  FALSE,
5965     EL_ACID_SPLASH_LEFT,                -1, -1
5966   },
5967
5968   {
5969     Xplant,                             TRUE,   FALSE,
5970     EL_EMC_PLANT,                       -1, -1
5971   },
5972   {
5973     Yplant,                             FALSE,  FALSE,
5974     EL_EMC_PLANT,                       -1, -1
5975   },
5976
5977   {
5978     Xacid_1,                            TRUE,   FALSE,
5979     EL_ACID,                            -1, -1
5980   },
5981   {
5982     Xacid_2,                            FALSE,  FALSE,
5983     EL_ACID,                            -1, -1
5984   },
5985   {
5986     Xacid_3,                            FALSE,  FALSE,
5987     EL_ACID,                            -1, -1
5988   },
5989   {
5990     Xacid_4,                            FALSE,  FALSE,
5991     EL_ACID,                            -1, -1
5992   },
5993   {
5994     Xacid_5,                            FALSE,  FALSE,
5995     EL_ACID,                            -1, -1
5996   },
5997   {
5998     Xacid_6,                            FALSE,  FALSE,
5999     EL_ACID,                            -1, -1
6000   },
6001   {
6002     Xacid_7,                            FALSE,  FALSE,
6003     EL_ACID,                            -1, -1
6004   },
6005   {
6006     Xacid_8,                            FALSE,  FALSE,
6007     EL_ACID,                            -1, -1
6008   },
6009
6010   {
6011     Xfake_acid_1,                       TRUE,   FALSE,
6012     EL_EMC_FAKE_ACID,                   -1, -1
6013   },
6014   {
6015     Xfake_acid_2,                       FALSE,  FALSE,
6016     EL_EMC_FAKE_ACID,                   -1, -1
6017   },
6018   {
6019     Xfake_acid_3,                       FALSE,  FALSE,
6020     EL_EMC_FAKE_ACID,                   -1, -1
6021   },
6022   {
6023     Xfake_acid_4,                       FALSE,  FALSE,
6024     EL_EMC_FAKE_ACID,                   -1, -1
6025   },
6026   {
6027     Xfake_acid_5,                       FALSE,  FALSE,
6028     EL_EMC_FAKE_ACID,                   -1, -1
6029   },
6030   {
6031     Xfake_acid_6,                       FALSE,  FALSE,
6032     EL_EMC_FAKE_ACID,                   -1, -1
6033   },
6034   {
6035     Xfake_acid_7,                       FALSE,  FALSE,
6036     EL_EMC_FAKE_ACID,                   -1, -1
6037   },
6038   {
6039     Xfake_acid_8,                       FALSE,  FALSE,
6040     EL_EMC_FAKE_ACID,                   -1, -1
6041   },
6042
6043   {
6044     Xfake_acid_1_player,                FALSE,  FALSE,
6045     EL_EMC_FAKE_ACID,                   -1, -1
6046   },
6047   {
6048     Xfake_acid_2_player,                FALSE,  FALSE,
6049     EL_EMC_FAKE_ACID,                   -1, -1
6050   },
6051   {
6052     Xfake_acid_3_player,                FALSE,  FALSE,
6053     EL_EMC_FAKE_ACID,                   -1, -1
6054   },
6055   {
6056     Xfake_acid_4_player,                FALSE,  FALSE,
6057     EL_EMC_FAKE_ACID,                   -1, -1
6058   },
6059   {
6060     Xfake_acid_5_player,                FALSE,  FALSE,
6061     EL_EMC_FAKE_ACID,                   -1, -1
6062   },
6063   {
6064     Xfake_acid_6_player,                FALSE,  FALSE,
6065     EL_EMC_FAKE_ACID,                   -1, -1
6066   },
6067   {
6068     Xfake_acid_7_player,                FALSE,  FALSE,
6069     EL_EMC_FAKE_ACID,                   -1, -1
6070   },
6071   {
6072     Xfake_acid_8_player,                FALSE,  FALSE,
6073     EL_EMC_FAKE_ACID,                   -1, -1
6074   },
6075
6076   {
6077     Xgrass,                             TRUE,   FALSE,
6078     EL_EMC_GRASS,                       -1, -1
6079   },
6080   {
6081     Ygrass_nB,                          FALSE,  FALSE,
6082     EL_EMC_GRASS,                       ACTION_DIGGING, MV_BIT_UP
6083   },
6084   {
6085     Ygrass_eB,                          FALSE,  FALSE,
6086     EL_EMC_GRASS,                       ACTION_DIGGING, MV_BIT_RIGHT
6087   },
6088   {
6089     Ygrass_sB,                          FALSE,  FALSE,
6090     EL_EMC_GRASS,                       ACTION_DIGGING, MV_BIT_DOWN
6091   },
6092   {
6093     Ygrass_wB,                          FALSE,  FALSE,
6094     EL_EMC_GRASS,                       ACTION_DIGGING, MV_BIT_LEFT
6095   },
6096
6097   {
6098     Xdirt,                              TRUE,   FALSE,
6099     EL_SAND,                            -1, -1
6100   },
6101   {
6102     Ydirt_nB,                           FALSE,  FALSE,
6103     EL_SAND,                            ACTION_DIGGING, MV_BIT_UP
6104   },
6105   {
6106     Ydirt_eB,                           FALSE,  FALSE,
6107     EL_SAND,                            ACTION_DIGGING, MV_BIT_RIGHT
6108   },
6109   {
6110     Ydirt_sB,                           FALSE,  FALSE,
6111     EL_SAND,                            ACTION_DIGGING, MV_BIT_DOWN
6112   },
6113   {
6114     Ydirt_wB,                           FALSE,  FALSE,
6115     EL_SAND,                            ACTION_DIGGING, MV_BIT_LEFT
6116   },
6117
6118   {
6119     Xandroid,                           TRUE,   FALSE,
6120     EL_EMC_ANDROID,                     ACTION_ACTIVE, -1
6121   },
6122   {
6123     Xandroid_1_n,                       FALSE,  FALSE,
6124     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_UP
6125   },
6126   {
6127     Xandroid_2_n,                       FALSE,  FALSE,
6128     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_UP
6129   },
6130   {
6131     Xandroid_1_e,                       FALSE,  FALSE,
6132     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_RIGHT
6133   },
6134   {
6135     Xandroid_2_e,                       FALSE,  FALSE,
6136     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_RIGHT
6137   },
6138   {
6139     Xandroid_1_w,                       FALSE,  FALSE,
6140     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_LEFT
6141   },
6142   {
6143     Xandroid_2_w,                       FALSE,  FALSE,
6144     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_LEFT
6145   },
6146   {
6147     Xandroid_1_s,                       FALSE,  FALSE,
6148     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_DOWN
6149   },
6150   {
6151     Xandroid_2_s,                       FALSE,  FALSE,
6152     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_DOWN
6153   },
6154   {
6155     Yandroid_n,                         FALSE,  FALSE,
6156     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_UP
6157   },
6158   {
6159     Yandroid_nB,                        FALSE,  TRUE,
6160     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_UP
6161   },
6162   {
6163     Yandroid_ne,                        FALSE,  FALSE,
6164     EL_EMC_ANDROID,                     ACTION_GROWING, MV_BIT_UPRIGHT
6165   },
6166   {
6167     Yandroid_neB,                       FALSE,  TRUE,
6168     EL_EMC_ANDROID,                     ACTION_SHRINKING, MV_BIT_UPRIGHT
6169   },
6170   {
6171     Yandroid_e,                         FALSE,  FALSE,
6172     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_RIGHT
6173   },
6174   {
6175     Yandroid_eB,                        FALSE,  TRUE,
6176     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_RIGHT
6177   },
6178   {
6179     Yandroid_se,                        FALSE,  FALSE,
6180     EL_EMC_ANDROID,                     ACTION_GROWING, MV_BIT_DOWNRIGHT
6181   },
6182   {
6183     Yandroid_seB,                       FALSE,  TRUE,
6184     EL_EMC_ANDROID,                     ACTION_SHRINKING, MV_BIT_DOWNRIGHT
6185   },
6186   {
6187     Yandroid_s,                         FALSE,  FALSE,
6188     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_DOWN
6189   },
6190   {
6191     Yandroid_sB,                        FALSE,  TRUE,
6192     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_DOWN
6193   },
6194   {
6195     Yandroid_sw,                        FALSE,  FALSE,
6196     EL_EMC_ANDROID,                     ACTION_GROWING, MV_BIT_DOWNLEFT
6197   },
6198   {
6199     Yandroid_swB,                       FALSE,  TRUE,
6200     EL_EMC_ANDROID,                     ACTION_SHRINKING, MV_BIT_DOWNLEFT
6201   },
6202   {
6203     Yandroid_w,                         FALSE,  FALSE,
6204     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_LEFT
6205   },
6206   {
6207     Yandroid_wB,                        FALSE,  TRUE,
6208     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_LEFT
6209   },
6210   {
6211     Yandroid_nw,                        FALSE,  FALSE,
6212     EL_EMC_ANDROID,                     ACTION_GROWING, MV_BIT_UPLEFT
6213   },
6214   {
6215     Yandroid_nwB,                       FALSE,  TRUE,
6216     EL_EMC_ANDROID,                     ACTION_SHRINKING, MV_BIT_UPLEFT
6217   },
6218
6219   {
6220     Xeater_n,                           TRUE,   FALSE,
6221     EL_YAMYAM_UP,                       -1, -1
6222   },
6223   {
6224     Xeater_e,                           TRUE,   FALSE,
6225     EL_YAMYAM_RIGHT,                    -1, -1
6226   },
6227   {
6228     Xeater_w,                           TRUE,   FALSE,
6229     EL_YAMYAM_LEFT,                     -1, -1
6230   },
6231   {
6232     Xeater_s,                           TRUE,   FALSE,
6233     EL_YAMYAM_DOWN,                     -1, -1
6234   },
6235   {
6236     Yeater_n,                           FALSE,  FALSE,
6237     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_UP
6238   },
6239   {
6240     Yeater_nB,                          FALSE,  TRUE,
6241     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_UP
6242   },
6243   {
6244     Yeater_e,                           FALSE,  FALSE,
6245     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_RIGHT
6246   },
6247   {
6248     Yeater_eB,                          FALSE,  TRUE,
6249     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_RIGHT
6250   },
6251   {
6252     Yeater_s,                           FALSE,  FALSE,
6253     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_DOWN
6254   },
6255   {
6256     Yeater_sB,                          FALSE,  TRUE,
6257     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_DOWN
6258   },
6259   {
6260     Yeater_w,                           FALSE,  FALSE,
6261     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_LEFT
6262   },
6263   {
6264     Yeater_wB,                          FALSE,  TRUE,
6265     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_LEFT
6266   },
6267   {
6268     Yeater_stone,                       FALSE,  FALSE,
6269     EL_YAMYAM,                          ACTION_SMASHED_BY_ROCK, -1
6270   },
6271   {
6272     Yeater_spring,                      FALSE,  FALSE,
6273     EL_YAMYAM,                          ACTION_SMASHED_BY_SPRING, -1
6274   },
6275
6276   {
6277     Xalien,                             TRUE,   FALSE,
6278     EL_ROBOT,                           -1, -1
6279   },
6280   {
6281     Xalien_pause,                       FALSE,  FALSE,
6282     EL_ROBOT,                           -1, -1
6283   },
6284   {
6285     Yalien_n,                           FALSE,  FALSE,
6286     EL_ROBOT,                           ACTION_MOVING, MV_BIT_UP
6287   },
6288   {
6289     Yalien_nB,                          FALSE,  TRUE,
6290     EL_ROBOT,                           ACTION_MOVING, MV_BIT_UP
6291   },
6292   {
6293     Yalien_e,                           FALSE,  FALSE,
6294     EL_ROBOT,                           ACTION_MOVING, MV_BIT_RIGHT
6295   },
6296   {
6297     Yalien_eB,                          FALSE,  TRUE,
6298     EL_ROBOT,                           ACTION_MOVING, MV_BIT_RIGHT
6299   },
6300   {
6301     Yalien_s,                           FALSE,  FALSE,
6302     EL_ROBOT,                           ACTION_MOVING, MV_BIT_DOWN
6303   },
6304   {
6305     Yalien_sB,                          FALSE,  TRUE,
6306     EL_ROBOT,                           ACTION_MOVING, MV_BIT_DOWN
6307   },
6308   {
6309     Yalien_w,                           FALSE,  FALSE,
6310     EL_ROBOT,                           ACTION_MOVING, MV_BIT_LEFT
6311   },
6312   {
6313     Yalien_wB,                          FALSE,  TRUE,
6314     EL_ROBOT,                           ACTION_MOVING, MV_BIT_LEFT
6315   },
6316   {
6317     Yalien_stone,                       FALSE,  FALSE,
6318     EL_ROBOT,                           ACTION_SMASHED_BY_ROCK, -1
6319   },
6320   {
6321     Yalien_spring,                      FALSE,  FALSE,
6322     EL_ROBOT,                           ACTION_SMASHED_BY_SPRING, -1
6323   },
6324
6325   {
6326     Xbug_1_n,                           TRUE,   FALSE,
6327     EL_BUG_UP,                          -1, -1
6328   },
6329   {
6330     Xbug_1_e,                           TRUE,   FALSE,
6331     EL_BUG_RIGHT,                       -1, -1
6332   },
6333   {
6334     Xbug_1_s,                           TRUE,   FALSE,
6335     EL_BUG_DOWN,                        -1, -1
6336   },
6337   {
6338     Xbug_1_w,                           TRUE,   FALSE,
6339     EL_BUG_LEFT,                        -1, -1
6340   },
6341   {
6342     Xbug_2_n,                           FALSE,  FALSE,
6343     EL_BUG_UP,                          -1, -1
6344   },
6345   {
6346     Xbug_2_e,                           FALSE,  FALSE,
6347     EL_BUG_RIGHT,                       -1, -1
6348   },
6349   {
6350     Xbug_2_s,                           FALSE,  FALSE,
6351     EL_BUG_DOWN,                        -1, -1
6352   },
6353   {
6354     Xbug_2_w,                           FALSE,  FALSE,
6355     EL_BUG_LEFT,                        -1, -1
6356   },
6357   {
6358     Ybug_n,                             FALSE,  FALSE,
6359     EL_BUG,                             ACTION_MOVING, MV_BIT_UP
6360   },
6361   {
6362     Ybug_nB,                            FALSE,  TRUE,
6363     EL_BUG,                             ACTION_MOVING, MV_BIT_UP
6364   },
6365   {
6366     Ybug_e,                             FALSE,  FALSE,
6367     EL_BUG,                             ACTION_MOVING, MV_BIT_RIGHT
6368   },
6369   {
6370     Ybug_eB,                            FALSE,  TRUE,
6371     EL_BUG,                             ACTION_MOVING, MV_BIT_RIGHT
6372   },
6373   {
6374     Ybug_s,                             FALSE,  FALSE,
6375     EL_BUG,                             ACTION_MOVING, MV_BIT_DOWN
6376   },
6377   {
6378     Ybug_sB,                            FALSE,  TRUE,
6379     EL_BUG,                             ACTION_MOVING, MV_BIT_DOWN
6380   },
6381   {
6382     Ybug_w,                             FALSE,  FALSE,
6383     EL_BUG,                             ACTION_MOVING, MV_BIT_LEFT
6384   },
6385   {
6386     Ybug_wB,                            FALSE,  TRUE,
6387     EL_BUG,                             ACTION_MOVING, MV_BIT_LEFT
6388   },
6389   {
6390     Ybug_w_n,                           FALSE,  FALSE,
6391     EL_BUG,                             ACTION_TURNING_FROM_LEFT, MV_BIT_UP
6392   },
6393   {
6394     Ybug_n_e,                           FALSE,  FALSE,
6395     EL_BUG,                             ACTION_TURNING_FROM_UP, MV_BIT_RIGHT
6396   },
6397   {
6398     Ybug_e_s,                           FALSE,  FALSE,
6399     EL_BUG,                             ACTION_TURNING_FROM_RIGHT, MV_BIT_DOWN
6400   },
6401   {
6402     Ybug_s_w,                           FALSE,  FALSE,
6403     EL_BUG,                             ACTION_TURNING_FROM_DOWN, MV_BIT_LEFT
6404   },
6405   {
6406     Ybug_e_n,                           FALSE,  FALSE,
6407     EL_BUG,                             ACTION_TURNING_FROM_RIGHT, MV_BIT_UP
6408   },
6409   {
6410     Ybug_s_e,                           FALSE,  FALSE,
6411     EL_BUG,                             ACTION_TURNING_FROM_DOWN, MV_BIT_RIGHT
6412   },
6413   {
6414     Ybug_w_s,                           FALSE,  FALSE,
6415     EL_BUG,                             ACTION_TURNING_FROM_LEFT, MV_BIT_DOWN
6416   },
6417   {
6418     Ybug_n_w,                           FALSE,  FALSE,
6419     EL_BUG,                             ACTION_TURNING_FROM_UP, MV_BIT_LEFT
6420   },
6421   {
6422     Ybug_stone,                         FALSE,  FALSE,
6423     EL_BUG,                             ACTION_SMASHED_BY_ROCK, -1
6424   },
6425   {
6426     Ybug_spring,                        FALSE,  FALSE,
6427     EL_BUG,                             ACTION_SMASHED_BY_SPRING, -1
6428   },
6429
6430   {
6431     Xtank_1_n,                          TRUE,   FALSE,
6432     EL_SPACESHIP_UP,                    -1, -1
6433   },
6434   {
6435     Xtank_1_e,                          TRUE,   FALSE,
6436     EL_SPACESHIP_RIGHT,                 -1, -1
6437   },
6438   {
6439     Xtank_1_s,                          TRUE,   FALSE,
6440     EL_SPACESHIP_DOWN,                  -1, -1
6441   },
6442   {
6443     Xtank_1_w,                          TRUE,   FALSE,
6444     EL_SPACESHIP_LEFT,                  -1, -1
6445   },
6446   {
6447     Xtank_2_n,                          FALSE,  FALSE,
6448     EL_SPACESHIP_UP,                    -1, -1
6449   },
6450   {
6451     Xtank_2_e,                          FALSE,  FALSE,
6452     EL_SPACESHIP_RIGHT,                 -1, -1
6453   },
6454   {
6455     Xtank_2_s,                          FALSE,  FALSE,
6456     EL_SPACESHIP_DOWN,                  -1, -1
6457   },
6458   {
6459     Xtank_2_w,                          FALSE,  FALSE,
6460     EL_SPACESHIP_LEFT,                  -1, -1
6461   },
6462   {
6463     Ytank_n,                            FALSE,  FALSE,
6464     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_UP
6465   },
6466   {
6467     Ytank_nB,                           FALSE,  TRUE,
6468     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_UP
6469   },
6470   {
6471     Ytank_e,                            FALSE,  FALSE,
6472     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_RIGHT
6473   },
6474   {
6475     Ytank_eB,                           FALSE,  TRUE,
6476     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_RIGHT
6477   },
6478   {
6479     Ytank_s,                            FALSE,  FALSE,
6480     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_DOWN
6481   },
6482   {
6483     Ytank_sB,                           FALSE,  TRUE,
6484     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_DOWN
6485   },
6486   {
6487     Ytank_w,                            FALSE,  FALSE,
6488     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_LEFT
6489   },
6490   {
6491     Ytank_wB,                           FALSE,  TRUE,
6492     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_LEFT
6493   },
6494   {
6495     Ytank_w_n,                          FALSE,  FALSE,
6496     EL_SPACESHIP,                       ACTION_TURNING_FROM_LEFT, MV_BIT_UP
6497   },
6498   {
6499     Ytank_n_e,                          FALSE,  FALSE,
6500     EL_SPACESHIP,                       ACTION_TURNING_FROM_UP, MV_BIT_RIGHT
6501   },
6502   {
6503     Ytank_e_s,                          FALSE,  FALSE,
6504     EL_SPACESHIP,                       ACTION_TURNING_FROM_RIGHT, MV_BIT_DOWN
6505   },
6506   {
6507     Ytank_s_w,                          FALSE,  FALSE,
6508     EL_SPACESHIP,                       ACTION_TURNING_FROM_DOWN, MV_BIT_LEFT
6509   },
6510   {
6511     Ytank_e_n,                          FALSE,  FALSE,
6512     EL_SPACESHIP,                       ACTION_TURNING_FROM_RIGHT, MV_BIT_UP
6513   },
6514   {
6515     Ytank_s_e,                          FALSE,  FALSE,
6516     EL_SPACESHIP,                       ACTION_TURNING_FROM_DOWN, MV_BIT_RIGHT
6517   },
6518   {
6519     Ytank_w_s,                          FALSE,  FALSE,
6520     EL_SPACESHIP,                       ACTION_TURNING_FROM_LEFT, MV_BIT_DOWN
6521   },
6522   {
6523     Ytank_n_w,                          FALSE,  FALSE,
6524     EL_SPACESHIP,                       ACTION_TURNING_FROM_UP, MV_BIT_LEFT
6525   },
6526   {
6527     Ytank_stone,                        FALSE,  FALSE,
6528     EL_SPACESHIP,                       ACTION_SMASHED_BY_ROCK, -1
6529   },
6530   {
6531     Ytank_spring,                       FALSE,  FALSE,
6532     EL_SPACESHIP,                       ACTION_SMASHED_BY_SPRING, -1
6533   },
6534
6535   {
6536     Xemerald,                           TRUE,   FALSE,
6537     EL_EMERALD,                         -1, -1
6538   },
6539   {
6540     Xemerald_pause,                     FALSE,  FALSE,
6541     EL_EMERALD,                         -1, -1
6542   },
6543   {
6544     Xemerald_fall,                      FALSE,  FALSE,
6545     EL_EMERALD,                         -1, -1
6546   },
6547   {
6548     Xemerald_shine,                     FALSE,  FALSE,
6549     EL_EMERALD,                         ACTION_TWINKLING, -1
6550   },
6551   {
6552     Yemerald_s,                         FALSE,  FALSE,
6553     EL_EMERALD,                         ACTION_FALLING, -1
6554   },
6555   {
6556     Yemerald_sB,                        FALSE,  TRUE,
6557     EL_EMERALD,                         ACTION_FALLING, -1
6558   },
6559   {
6560     Yemerald_e,                         FALSE,  FALSE,
6561     EL_EMERALD,                         ACTION_MOVING, MV_BIT_RIGHT
6562   },
6563   {
6564     Yemerald_eB,                        FALSE,  TRUE,
6565     EL_EMERALD,                         ACTION_MOVING, MV_BIT_RIGHT
6566   },
6567   {
6568     Yemerald_w,                         FALSE,  FALSE,
6569     EL_EMERALD,                         ACTION_MOVING, MV_BIT_LEFT
6570   },
6571   {
6572     Yemerald_wB,                        FALSE,  TRUE,
6573     EL_EMERALD,                         ACTION_MOVING, MV_BIT_LEFT
6574   },
6575   {
6576     Yemerald_blank,                     FALSE,  FALSE,
6577     EL_EMERALD,                         ACTION_COLLECTING, -1
6578   },
6579
6580   {
6581     Xdiamond,                           TRUE,   FALSE,
6582     EL_DIAMOND,                         -1, -1
6583   },
6584   {
6585     Xdiamond_pause,                     FALSE,  FALSE,
6586     EL_DIAMOND,                         -1, -1
6587   },
6588   {
6589     Xdiamond_fall,                      FALSE,  FALSE,
6590     EL_DIAMOND,                         -1, -1
6591   },
6592   {
6593     Xdiamond_shine,                     FALSE,  FALSE,
6594     EL_DIAMOND,                         ACTION_TWINKLING, -1
6595   },
6596   {
6597     Ydiamond_s,                         FALSE,  FALSE,
6598     EL_DIAMOND,                         ACTION_FALLING, -1
6599   },
6600   {
6601     Ydiamond_sB,                        FALSE,  TRUE,
6602     EL_DIAMOND,                         ACTION_FALLING, -1
6603   },
6604   {
6605     Ydiamond_e,                         FALSE,  FALSE,
6606     EL_DIAMOND,                         ACTION_MOVING, MV_BIT_RIGHT
6607   },
6608   {
6609     Ydiamond_eB,                        FALSE,  TRUE,
6610     EL_DIAMOND,                         ACTION_MOVING, MV_BIT_RIGHT
6611   },
6612   {
6613     Ydiamond_w,                         FALSE,  FALSE,
6614     EL_DIAMOND,                         ACTION_MOVING, MV_BIT_LEFT
6615   },
6616   {
6617     Ydiamond_wB,                        FALSE,  TRUE,
6618     EL_DIAMOND,                         ACTION_MOVING, MV_BIT_LEFT
6619   },
6620   {
6621     Ydiamond_blank,                     FALSE,  FALSE,
6622     EL_DIAMOND,                         ACTION_COLLECTING, -1
6623   },
6624   {
6625     Ydiamond_stone,                     FALSE,  FALSE,
6626     EL_DIAMOND,                         ACTION_SMASHED_BY_ROCK, -1
6627   },
6628
6629   {
6630     Xstone,                             TRUE,   FALSE,
6631     EL_ROCK,                            -1, -1
6632   },
6633   {
6634     Xstone_pause,                       FALSE,  FALSE,
6635     EL_ROCK,                            -1, -1
6636   },
6637   {
6638     Xstone_fall,                        FALSE,  FALSE,
6639     EL_ROCK,                            -1, -1
6640   },
6641   {
6642     Ystone_s,                           FALSE,  FALSE,
6643     EL_ROCK,                            ACTION_FALLING, -1
6644   },
6645   {
6646     Ystone_sB,                          FALSE,  TRUE,
6647     EL_ROCK,                            ACTION_FALLING, -1
6648   },
6649   {
6650     Ystone_e,                           FALSE,  FALSE,
6651     EL_ROCK,                            ACTION_MOVING, MV_BIT_RIGHT
6652   },
6653   {
6654     Ystone_eB,                          FALSE,  TRUE,
6655     EL_ROCK,                            ACTION_MOVING, MV_BIT_RIGHT
6656   },
6657   {
6658     Ystone_w,                           FALSE,  FALSE,
6659     EL_ROCK,                            ACTION_MOVING, MV_BIT_LEFT
6660   },
6661   {
6662     Ystone_wB,                          FALSE,  TRUE,
6663     EL_ROCK,                            ACTION_MOVING, MV_BIT_LEFT
6664   },
6665
6666   {
6667     Xbomb,                              TRUE,   FALSE,
6668     EL_BOMB,                            -1, -1
6669   },
6670   {
6671     Xbomb_pause,                        FALSE,  FALSE,
6672     EL_BOMB,                            -1, -1
6673   },
6674   {
6675     Xbomb_fall,                         FALSE,  FALSE,
6676     EL_BOMB,                            -1, -1
6677   },
6678   {
6679     Ybomb_s,                            FALSE,  FALSE,
6680     EL_BOMB,                            ACTION_FALLING, -1
6681   },
6682   {
6683     Ybomb_sB,                           FALSE,  TRUE,
6684     EL_BOMB,                            ACTION_FALLING, -1
6685   },
6686   {
6687     Ybomb_e,                            FALSE,  FALSE,
6688     EL_BOMB,                            ACTION_MOVING, MV_BIT_RIGHT
6689   },
6690   {
6691     Ybomb_eB,                           FALSE,  TRUE,
6692     EL_BOMB,                            ACTION_MOVING, MV_BIT_RIGHT
6693   },
6694   {
6695     Ybomb_w,                            FALSE,  FALSE,
6696     EL_BOMB,                            ACTION_MOVING, MV_BIT_LEFT
6697   },
6698   {
6699     Ybomb_wB,                           FALSE,  TRUE,
6700     EL_BOMB,                            ACTION_MOVING, MV_BIT_LEFT
6701   },
6702   {
6703     Ybomb_blank,                        FALSE,  FALSE,
6704     EL_BOMB,                            ACTION_ACTIVATING, -1
6705   },
6706
6707   {
6708     Xnut,                               TRUE,   FALSE,
6709     EL_NUT,                             -1, -1
6710   },
6711   {
6712     Xnut_pause,                         FALSE,  FALSE,
6713     EL_NUT,                             -1, -1
6714   },
6715   {
6716     Xnut_fall,                          FALSE,  FALSE,
6717     EL_NUT,                             -1, -1
6718   },
6719   {
6720     Ynut_s,                             FALSE,  FALSE,
6721     EL_NUT,                             ACTION_FALLING, -1
6722   },
6723   {
6724     Ynut_sB,                            FALSE,  TRUE,
6725     EL_NUT,                             ACTION_FALLING, -1
6726   },
6727   {
6728     Ynut_e,                             FALSE,  FALSE,
6729     EL_NUT,                             ACTION_MOVING, MV_BIT_RIGHT
6730   },
6731   {
6732     Ynut_eB,                            FALSE,  TRUE,
6733     EL_NUT,                             ACTION_MOVING, MV_BIT_RIGHT
6734   },
6735   {
6736     Ynut_w,                             FALSE,  FALSE,
6737     EL_NUT,                             ACTION_MOVING, MV_BIT_LEFT
6738   },
6739   {
6740     Ynut_wB,                            FALSE,  TRUE,
6741     EL_NUT,                             ACTION_MOVING, MV_BIT_LEFT
6742   },
6743   {
6744     Ynut_stone,                         FALSE,  FALSE,
6745     EL_NUT,                             ACTION_BREAKING, -1
6746   },
6747
6748   {
6749     Xspring,                            TRUE,   FALSE,
6750     EL_SPRING,                          -1, -1
6751   },
6752   {
6753     Xspring_pause,                      FALSE,  FALSE,
6754     EL_SPRING,                          -1, -1
6755   },
6756   {
6757     Xspring_e,                          TRUE,   FALSE,
6758     EL_SPRING_RIGHT,                    -1, -1
6759   },
6760   {
6761     Xspring_w,                          TRUE,   FALSE,
6762     EL_SPRING_LEFT,                     -1, -1
6763   },
6764   {
6765     Xspring_fall,                       FALSE,  FALSE,
6766     EL_SPRING,                          -1, -1
6767   },
6768   {
6769     Yspring_s,                          FALSE,  FALSE,
6770     EL_SPRING,                          ACTION_FALLING, -1
6771   },
6772   {
6773     Yspring_sB,                         FALSE,  TRUE,
6774     EL_SPRING,                          ACTION_FALLING, -1
6775   },
6776   {
6777     Yspring_e,                          FALSE,  FALSE,
6778     EL_SPRING,                          ACTION_MOVING, MV_BIT_RIGHT
6779   },
6780   {
6781     Yspring_eB,                         FALSE,  TRUE,
6782     EL_SPRING,                          ACTION_MOVING, MV_BIT_RIGHT
6783   },
6784   {
6785     Yspring_w,                          FALSE,  FALSE,
6786     EL_SPRING,                          ACTION_MOVING, MV_BIT_LEFT
6787   },
6788   {
6789     Yspring_wB,                         FALSE,  TRUE,
6790     EL_SPRING,                          ACTION_MOVING, MV_BIT_LEFT
6791   },
6792   {
6793     Yspring_alien_e,                    FALSE,  FALSE,
6794     EL_SPRING,                          ACTION_EATING, MV_BIT_RIGHT
6795   },
6796   {
6797     Yspring_alien_eB,                   FALSE,  TRUE,
6798     EL_SPRING,                          ACTION_EATING, MV_BIT_RIGHT
6799   },
6800   {
6801     Yspring_alien_w,                    FALSE,  FALSE,
6802     EL_SPRING,                          ACTION_EATING, MV_BIT_LEFT
6803   },
6804   {
6805     Yspring_alien_wB,                   FALSE,  TRUE,
6806     EL_SPRING,                          ACTION_EATING, MV_BIT_LEFT
6807   },
6808
6809   {
6810     Xpush_emerald_e,                    FALSE,  FALSE,
6811     EL_EMERALD,                         -1, MV_BIT_RIGHT
6812   },
6813   {
6814     Xpush_emerald_w,                    FALSE,  FALSE,
6815     EL_EMERALD,                         -1, MV_BIT_LEFT
6816   },
6817   {
6818     Xpush_diamond_e,                    FALSE,  FALSE,
6819     EL_DIAMOND,                         -1, MV_BIT_RIGHT
6820   },
6821   {
6822     Xpush_diamond_w,                    FALSE,  FALSE,
6823     EL_DIAMOND,                         -1, MV_BIT_LEFT
6824   },
6825   {
6826     Xpush_stone_e,                      FALSE,  FALSE,
6827     EL_ROCK,                            -1, MV_BIT_RIGHT
6828   },
6829   {
6830     Xpush_stone_w,                      FALSE,  FALSE,
6831     EL_ROCK,                            -1, MV_BIT_LEFT
6832   },
6833   {
6834     Xpush_bomb_e,                       FALSE,  FALSE,
6835     EL_BOMB,                            -1, MV_BIT_RIGHT
6836   },
6837   {
6838     Xpush_bomb_w,                       FALSE,  FALSE,
6839     EL_BOMB,                            -1, MV_BIT_LEFT
6840   },
6841   {
6842     Xpush_nut_e,                        FALSE,  FALSE,
6843     EL_NUT,                             -1, MV_BIT_RIGHT
6844   },
6845   {
6846     Xpush_nut_w,                        FALSE,  FALSE,
6847     EL_NUT,                             -1, MV_BIT_LEFT
6848   },
6849   {
6850     Xpush_spring_e,                     FALSE,  FALSE,
6851     EL_SPRING_RIGHT,                    -1, MV_BIT_RIGHT
6852   },
6853   {
6854     Xpush_spring_w,                     FALSE,  FALSE,
6855     EL_SPRING_LEFT,                     -1, MV_BIT_LEFT
6856   },
6857
6858   {
6859     Xdynamite,                          TRUE,   FALSE,
6860     EL_EM_DYNAMITE,                     -1, -1
6861   },
6862   {
6863     Ydynamite_blank,                    FALSE,  FALSE,
6864     EL_EM_DYNAMITE,                     ACTION_COLLECTING, -1
6865   },
6866   {
6867     Xdynamite_1,                        TRUE,   FALSE,
6868     EL_EM_DYNAMITE_ACTIVE,              -1, -1
6869   },
6870   {
6871     Xdynamite_2,                        FALSE,  FALSE,
6872     EL_EM_DYNAMITE_ACTIVE,              -1, -1
6873   },
6874   {
6875     Xdynamite_3,                        FALSE,  FALSE,
6876     EL_EM_DYNAMITE_ACTIVE,              -1, -1
6877   },
6878   {
6879     Xdynamite_4,                        FALSE,  FALSE,
6880     EL_EM_DYNAMITE_ACTIVE,              -1, -1
6881   },
6882
6883   {
6884     Xkey_1,                             TRUE,   FALSE,
6885     EL_EM_KEY_1,                        -1, -1
6886   },
6887   {
6888     Xkey_2,                             TRUE,   FALSE,
6889     EL_EM_KEY_2,                        -1, -1
6890   },
6891   {
6892     Xkey_3,                             TRUE,   FALSE,
6893     EL_EM_KEY_3,                        -1, -1
6894   },
6895   {
6896     Xkey_4,                             TRUE,   FALSE,
6897     EL_EM_KEY_4,                        -1, -1
6898   },
6899   {
6900     Xkey_5,                             TRUE,   FALSE,
6901     EL_EMC_KEY_5,                       -1, -1
6902   },
6903   {
6904     Xkey_6,                             TRUE,   FALSE,
6905     EL_EMC_KEY_6,                       -1, -1
6906   },
6907   {
6908     Xkey_7,                             TRUE,   FALSE,
6909     EL_EMC_KEY_7,                       -1, -1
6910   },
6911   {
6912     Xkey_8,                             TRUE,   FALSE,
6913     EL_EMC_KEY_8,                       -1, -1
6914   },
6915
6916   {
6917     Xdoor_1,                            TRUE,   FALSE,
6918     EL_EM_GATE_1,                       -1, -1
6919   },
6920   {
6921     Xdoor_2,                            TRUE,   FALSE,
6922     EL_EM_GATE_2,                       -1, -1
6923   },
6924   {
6925     Xdoor_3,                            TRUE,   FALSE,
6926     EL_EM_GATE_3,                       -1, -1
6927   },
6928   {
6929     Xdoor_4,                            TRUE,   FALSE,
6930     EL_EM_GATE_4,                       -1, -1
6931   },
6932   {
6933     Xdoor_5,                            TRUE,   FALSE,
6934     EL_EMC_GATE_5,                      -1, -1
6935   },
6936   {
6937     Xdoor_6,                            TRUE,   FALSE,
6938     EL_EMC_GATE_6,                      -1, -1
6939   },
6940   {
6941     Xdoor_7,                            TRUE,   FALSE,
6942     EL_EMC_GATE_7,                      -1, -1
6943   },
6944   {
6945     Xdoor_8,                            TRUE,   FALSE,
6946     EL_EMC_GATE_8,                      -1, -1
6947   },
6948
6949   {
6950     Xfake_door_1,                       TRUE,   FALSE,
6951     EL_EM_GATE_1_GRAY,                  -1, -1
6952   },
6953   {
6954     Xfake_door_2,                       TRUE,   FALSE,
6955     EL_EM_GATE_2_GRAY,                  -1, -1
6956   },
6957   {
6958     Xfake_door_3,                       TRUE,   FALSE,
6959     EL_EM_GATE_3_GRAY,                  -1, -1
6960   },
6961   {
6962     Xfake_door_4,                       TRUE,   FALSE,
6963     EL_EM_GATE_4_GRAY,                  -1, -1
6964   },
6965   {
6966     Xfake_door_5,                       TRUE,   FALSE,
6967     EL_EMC_GATE_5_GRAY,                 -1, -1
6968   },
6969   {
6970     Xfake_door_6,                       TRUE,   FALSE,
6971     EL_EMC_GATE_6_GRAY,                 -1, -1
6972   },
6973   {
6974     Xfake_door_7,                       TRUE,   FALSE,
6975     EL_EMC_GATE_7_GRAY,                 -1, -1
6976   },
6977   {
6978     Xfake_door_8,                       TRUE,   FALSE,
6979     EL_EMC_GATE_8_GRAY,                 -1, -1
6980   },
6981
6982   {
6983     Xballoon,                           TRUE,   FALSE,
6984     EL_BALLOON,                         -1, -1
6985   },
6986   {
6987     Yballoon_n,                         FALSE,  FALSE,
6988     EL_BALLOON,                         ACTION_MOVING, MV_BIT_UP
6989   },
6990   {
6991     Yballoon_nB,                        FALSE,  TRUE,
6992     EL_BALLOON,                         ACTION_MOVING, MV_BIT_UP
6993   },
6994   {
6995     Yballoon_e,                         FALSE,  FALSE,
6996     EL_BALLOON,                         ACTION_MOVING, MV_BIT_RIGHT
6997   },
6998   {
6999     Yballoon_eB,                        FALSE,  TRUE,
7000     EL_BALLOON,                         ACTION_MOVING, MV_BIT_RIGHT
7001   },
7002   {
7003     Yballoon_s,                         FALSE,  FALSE,
7004     EL_BALLOON,                         ACTION_MOVING, MV_BIT_DOWN
7005   },
7006   {
7007     Yballoon_sB,                        FALSE,  TRUE,
7008     EL_BALLOON,                         ACTION_MOVING, MV_BIT_DOWN
7009   },
7010   {
7011     Yballoon_w,                         FALSE,  FALSE,
7012     EL_BALLOON,                         ACTION_MOVING, MV_BIT_LEFT
7013   },
7014   {
7015     Yballoon_wB,                        FALSE,  TRUE,
7016     EL_BALLOON,                         ACTION_MOVING, MV_BIT_LEFT
7017   },
7018
7019   {
7020     Xball_1,                            TRUE,   FALSE,
7021     EL_EMC_MAGIC_BALL,                  -1, -1
7022   },
7023   {
7024     Yball_1,                            FALSE,  FALSE,
7025     EL_EMC_MAGIC_BALL,                  ACTION_ACTIVE, -1
7026   },
7027   {
7028     Xball_2,                            FALSE,  FALSE,
7029     EL_EMC_MAGIC_BALL,                  ACTION_ACTIVE, -1
7030   },
7031   {
7032     Yball_2,                            FALSE,  FALSE,
7033     EL_EMC_MAGIC_BALL,                  ACTION_ACTIVE, -1
7034   },
7035   {
7036     Yball_blank,                        FALSE,  FALSE,
7037     EL_EMC_MAGIC_BALL,                  ACTION_DROPPING, -1
7038   },
7039
7040   {
7041     Xamoeba_1,                          TRUE,   FALSE,
7042     EL_AMOEBA_DRY,                      ACTION_OTHER, -1
7043   },
7044   {
7045     Xamoeba_2,                          FALSE,  FALSE,
7046     EL_AMOEBA_DRY,                      ACTION_OTHER, -1
7047   },
7048   {
7049     Xamoeba_3,                          FALSE,  FALSE,
7050     EL_AMOEBA_DRY,                      ACTION_OTHER, -1
7051   },
7052   {
7053     Xamoeba_4,                          FALSE,  FALSE,
7054     EL_AMOEBA_DRY,                      ACTION_OTHER, -1
7055   },
7056   {
7057     Xamoeba_5,                          TRUE,   FALSE,
7058     EL_AMOEBA_WET,                      ACTION_OTHER, -1
7059   },
7060   {
7061     Xamoeba_6,                          FALSE,  FALSE,
7062     EL_AMOEBA_WET,                      ACTION_OTHER, -1
7063   },
7064   {
7065     Xamoeba_7,                          FALSE,  FALSE,
7066     EL_AMOEBA_WET,                      ACTION_OTHER, -1
7067   },
7068   {
7069     Xamoeba_8,                          FALSE,  FALSE,
7070     EL_AMOEBA_WET,                      ACTION_OTHER, -1
7071   },
7072
7073   {
7074     Xdrip,                              TRUE,   FALSE,
7075     EL_AMOEBA_DROP,                     ACTION_GROWING, -1
7076   },
7077   {
7078     Xdrip_fall,                         FALSE,  FALSE,
7079     EL_AMOEBA_DROP,                     -1, -1
7080   },
7081   {
7082     Xdrip_stretch,                      FALSE,  FALSE,
7083     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
7084   },
7085   {
7086     Xdrip_stretchB,                     FALSE,  TRUE,
7087     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
7088   },
7089   {
7090     Ydrip_1_s,                          FALSE,  FALSE,
7091     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
7092   },
7093   {
7094     Ydrip_1_sB,                         FALSE,  TRUE,
7095     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
7096   },
7097   {
7098     Ydrip_2_s,                          FALSE,  FALSE,
7099     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
7100   },
7101   {
7102     Ydrip_2_sB,                         FALSE,  TRUE,
7103     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
7104   },
7105
7106   {
7107     Xwonderwall,                        TRUE,   FALSE,
7108     EL_MAGIC_WALL,                      -1, -1
7109   },
7110   {
7111     Ywonderwall,                        FALSE,  FALSE,
7112     EL_MAGIC_WALL,                      ACTION_ACTIVE, -1
7113   },
7114
7115   {
7116     Xwheel,                             TRUE,   FALSE,
7117     EL_ROBOT_WHEEL,                     -1, -1
7118   },
7119   {
7120     Ywheel,                             FALSE,  FALSE,
7121     EL_ROBOT_WHEEL,                     ACTION_ACTIVE, -1
7122   },
7123
7124   {
7125     Xswitch,                            TRUE,   FALSE,
7126     EL_EMC_MAGIC_BALL_SWITCH,           -1, -1
7127   },
7128   {
7129     Yswitch,                            FALSE,  FALSE,
7130     EL_EMC_MAGIC_BALL_SWITCH,           ACTION_ACTIVE, -1
7131   },
7132
7133   {
7134     Xbumper,                            TRUE,   FALSE,
7135     EL_EMC_SPRING_BUMPER,               -1, -1
7136   },
7137   {
7138     Ybumper,                            FALSE,  FALSE,
7139     EL_EMC_SPRING_BUMPER,               ACTION_ACTIVE, -1
7140   },
7141
7142   {
7143     Xacid_nw,                           TRUE,   FALSE,
7144     EL_ACID_POOL_TOPLEFT,               -1, -1
7145   },
7146   {
7147     Xacid_ne,                           TRUE,   FALSE,
7148     EL_ACID_POOL_TOPRIGHT,              -1, -1
7149   },
7150   {
7151     Xacid_sw,                           TRUE,   FALSE,
7152     EL_ACID_POOL_BOTTOMLEFT,            -1, -1
7153   },
7154   {
7155     Xacid_s,                            TRUE,   FALSE,
7156     EL_ACID_POOL_BOTTOM,                -1, -1
7157   },
7158   {
7159     Xacid_se,                           TRUE,   FALSE,
7160     EL_ACID_POOL_BOTTOMRIGHT,           -1, -1
7161   },
7162
7163   {
7164     Xfake_blank,                        TRUE,   FALSE,
7165     EL_INVISIBLE_WALL,                  -1, -1
7166   },
7167   {
7168     Yfake_blank,                        FALSE,  FALSE,
7169     EL_INVISIBLE_WALL,                  ACTION_ACTIVE, -1
7170   },
7171
7172   {
7173     Xfake_grass,                        TRUE,   FALSE,
7174     EL_EMC_FAKE_GRASS,                  -1, -1
7175   },
7176   {
7177     Yfake_grass,                        FALSE,  FALSE,
7178     EL_EMC_FAKE_GRASS,                  ACTION_ACTIVE, -1
7179   },
7180
7181   {
7182     Xfake_amoeba,                       TRUE,   FALSE,
7183     EL_EMC_DRIPPER,                     -1, -1
7184   },
7185   {
7186     Yfake_amoeba,                       FALSE,  FALSE,
7187     EL_EMC_DRIPPER,                     ACTION_ACTIVE, -1
7188   },
7189
7190   {
7191     Xlenses,                            TRUE,   FALSE,
7192     EL_EMC_LENSES,                      -1, -1
7193   },
7194
7195   {
7196     Xmagnify,                           TRUE,   FALSE,
7197     EL_EMC_MAGNIFIER,                   -1, -1
7198   },
7199
7200   {
7201     Xsand,                              TRUE,   FALSE,
7202     EL_QUICKSAND_EMPTY,                 -1, -1
7203   },
7204   {
7205     Xsand_stone,                        TRUE,   FALSE,
7206     EL_QUICKSAND_FULL,                  -1, -1
7207   },
7208   {
7209     Xsand_stonein_1,                    FALSE,  TRUE,
7210     EL_ROCK,                            ACTION_FILLING, -1
7211   },
7212   {
7213     Xsand_stonein_2,                    FALSE,  TRUE,
7214     EL_ROCK,                            ACTION_FILLING, -1
7215   },
7216   {
7217     Xsand_stonein_3,                    FALSE,  TRUE,
7218     EL_ROCK,                            ACTION_FILLING, -1
7219   },
7220   {
7221     Xsand_stonein_4,                    FALSE,  TRUE,
7222     EL_ROCK,                            ACTION_FILLING, -1
7223   },
7224   {
7225     Xsand_sandstone_1,                  FALSE,  FALSE,
7226     EL_QUICKSAND_FILLING,               -1, -1
7227   },
7228   {
7229     Xsand_sandstone_2,                  FALSE,  FALSE,
7230     EL_QUICKSAND_FILLING,               -1, -1
7231   },
7232   {
7233     Xsand_sandstone_3,                  FALSE,  FALSE,
7234     EL_QUICKSAND_FILLING,               -1, -1
7235   },
7236   {
7237     Xsand_sandstone_4,                  FALSE,  FALSE,
7238     EL_QUICKSAND_FILLING,               -1, -1
7239   },
7240   {
7241     Xsand_stonesand_1,                  FALSE,  FALSE,
7242     EL_QUICKSAND_EMPTYING,              -1, -1
7243   },
7244   {
7245     Xsand_stonesand_2,                  FALSE,  FALSE,
7246     EL_QUICKSAND_EMPTYING,              -1, -1
7247   },
7248   {
7249     Xsand_stonesand_3,                  FALSE,  FALSE,
7250     EL_QUICKSAND_EMPTYING,              -1, -1
7251   },
7252   {
7253     Xsand_stonesand_4,                  FALSE,  FALSE,
7254     EL_QUICKSAND_EMPTYING,              -1, -1
7255   },
7256   {
7257     Xsand_stoneout_1,                   FALSE,  FALSE,
7258     EL_ROCK,                            ACTION_EMPTYING, -1
7259   },
7260   {
7261     Xsand_stoneout_2,                   FALSE,  FALSE,
7262     EL_ROCK,                            ACTION_EMPTYING, -1
7263   },
7264   {
7265     Xsand_stonesand_quickout_1,         FALSE,  FALSE,
7266     EL_QUICKSAND_EMPTYING,              -1, -1
7267   },
7268   {
7269     Xsand_stonesand_quickout_2,         FALSE,  FALSE,
7270     EL_QUICKSAND_EMPTYING,              -1, -1
7271   },
7272
7273   {
7274     Xslide_ns,                          TRUE,   FALSE,
7275     EL_EXPANDABLE_WALL_VERTICAL,        -1, -1
7276   },
7277   {
7278     Yslide_ns_blank,                    FALSE,  FALSE,
7279     EL_EXPANDABLE_WALL_VERTICAL,        ACTION_GROWING, -1
7280   },
7281   {
7282     Xslide_ew,                          TRUE,   FALSE,
7283     EL_EXPANDABLE_WALL_HORIZONTAL,      -1, -1
7284   },
7285   {
7286     Yslide_ew_blank,                    FALSE,  FALSE,
7287     EL_EXPANDABLE_WALL_HORIZONTAL,      ACTION_GROWING, -1
7288   },
7289
7290   {
7291     Xwind_n,                            TRUE,   FALSE,
7292     EL_BALLOON_SWITCH_UP,               -1, -1
7293   },
7294   {
7295     Xwind_e,                            TRUE,   FALSE,
7296     EL_BALLOON_SWITCH_RIGHT,            -1, -1
7297   },
7298   {
7299     Xwind_s,                            TRUE,   FALSE,
7300     EL_BALLOON_SWITCH_DOWN,             -1, -1
7301   },
7302   {
7303     Xwind_w,                            TRUE,   FALSE,
7304     EL_BALLOON_SWITCH_LEFT,             -1, -1
7305   },
7306   {
7307     Xwind_any,                          TRUE,   FALSE,
7308     EL_BALLOON_SWITCH_ANY,              -1, -1
7309   },
7310   {
7311     Xwind_stop,                         TRUE,   FALSE,
7312     EL_BALLOON_SWITCH_NONE,             -1, -1
7313   },
7314
7315   {
7316     Xexit,                              TRUE,   FALSE,
7317     EL_EM_EXIT_CLOSED,                  -1, -1
7318   },
7319   {
7320     Xexit_1,                            TRUE,   FALSE,
7321     EL_EM_EXIT_OPEN,                    -1, -1
7322   },
7323   {
7324     Xexit_2,                            FALSE,  FALSE,
7325     EL_EM_EXIT_OPEN,                    -1, -1
7326   },
7327   {
7328     Xexit_3,                            FALSE,  FALSE,
7329     EL_EM_EXIT_OPEN,                    -1, -1
7330   },
7331
7332   {
7333     Xpause,                             FALSE,  FALSE,
7334     EL_EMPTY,                           -1, -1
7335   },
7336
7337   {
7338     Xwall_1,                            TRUE,   FALSE,
7339     EL_WALL,                            -1, -1
7340   },
7341   {
7342     Xwall_2,                            TRUE,   FALSE,
7343     EL_EMC_WALL_14,                     -1, -1
7344   },
7345   {
7346     Xwall_3,                            TRUE,   FALSE,
7347     EL_EMC_WALL_15,                     -1, -1
7348   },
7349   {
7350     Xwall_4,                            TRUE,   FALSE,
7351     EL_EMC_WALL_16,                     -1, -1
7352   },
7353
7354   {
7355     Xroundwall_1,                       TRUE,   FALSE,
7356     EL_WALL_SLIPPERY,                   -1, -1
7357   },
7358   {
7359     Xroundwall_2,                       TRUE,   FALSE,
7360     EL_EMC_WALL_SLIPPERY_2,             -1, -1
7361   },
7362   {
7363     Xroundwall_3,                       TRUE,   FALSE,
7364     EL_EMC_WALL_SLIPPERY_3,             -1, -1
7365   },
7366   {
7367     Xroundwall_4,                       TRUE,   FALSE,
7368     EL_EMC_WALL_SLIPPERY_4,             -1, -1
7369   },
7370
7371   {
7372     Xsteel_1,                           TRUE,   FALSE,
7373     EL_STEELWALL,                       -1, -1
7374   },
7375   {
7376     Xsteel_2,                           TRUE,   FALSE,
7377     EL_EMC_STEELWALL_2,                 -1, -1
7378   },
7379   {
7380     Xsteel_3,                           TRUE,   FALSE,
7381     EL_EMC_STEELWALL_3,                 -1, -1
7382   },
7383   {
7384     Xsteel_4,                           TRUE,   FALSE,
7385     EL_EMC_STEELWALL_4,                 -1, -1
7386   },
7387
7388   {
7389     Xdecor_1,                           TRUE,   FALSE,
7390     EL_EMC_WALL_8,                      -1, -1
7391   },
7392   {
7393     Xdecor_2,                           TRUE,   FALSE,
7394     EL_EMC_WALL_6,                      -1, -1
7395   },
7396   {
7397     Xdecor_3,                           TRUE,   FALSE,
7398     EL_EMC_WALL_4,                      -1, -1
7399   },
7400   {
7401     Xdecor_4,                           TRUE,   FALSE,
7402     EL_EMC_WALL_7,                      -1, -1
7403   },
7404   {
7405     Xdecor_5,                           TRUE,   FALSE,
7406     EL_EMC_WALL_5,                      -1, -1
7407   },
7408   {
7409     Xdecor_6,                           TRUE,   FALSE,
7410     EL_EMC_WALL_9,                      -1, -1
7411   },
7412   {
7413     Xdecor_7,                           TRUE,   FALSE,
7414     EL_EMC_WALL_10,                     -1, -1
7415   },
7416   {
7417     Xdecor_8,                           TRUE,   FALSE,
7418     EL_EMC_WALL_1,                      -1, -1
7419   },
7420   {
7421     Xdecor_9,                           TRUE,   FALSE,
7422     EL_EMC_WALL_2,                      -1, -1
7423   },
7424   {
7425     Xdecor_10,                          TRUE,   FALSE,
7426     EL_EMC_WALL_3,                      -1, -1
7427   },
7428   {
7429     Xdecor_11,                          TRUE,   FALSE,
7430     EL_EMC_WALL_11,                     -1, -1
7431   },
7432   {
7433     Xdecor_12,                          TRUE,   FALSE,
7434     EL_EMC_WALL_12,                     -1, -1
7435   },
7436
7437   {
7438     Xalpha_0,                           TRUE,   FALSE,
7439     EL_CHAR('0'),                       -1, -1
7440   },
7441   {
7442     Xalpha_1,                           TRUE,   FALSE,
7443     EL_CHAR('1'),                       -1, -1
7444   },
7445   {
7446     Xalpha_2,                           TRUE,   FALSE,
7447     EL_CHAR('2'),                       -1, -1
7448   },
7449   {
7450     Xalpha_3,                           TRUE,   FALSE,
7451     EL_CHAR('3'),                       -1, -1
7452   },
7453   {
7454     Xalpha_4,                           TRUE,   FALSE,
7455     EL_CHAR('4'),                       -1, -1
7456   },
7457   {
7458     Xalpha_5,                           TRUE,   FALSE,
7459     EL_CHAR('5'),                       -1, -1
7460   },
7461   {
7462     Xalpha_6,                           TRUE,   FALSE,
7463     EL_CHAR('6'),                       -1, -1
7464   },
7465   {
7466     Xalpha_7,                           TRUE,   FALSE,
7467     EL_CHAR('7'),                       -1, -1
7468   },
7469   {
7470     Xalpha_8,                           TRUE,   FALSE,
7471     EL_CHAR('8'),                       -1, -1
7472   },
7473   {
7474     Xalpha_9,                           TRUE,   FALSE,
7475     EL_CHAR('9'),                       -1, -1
7476   },
7477   {
7478     Xalpha_excla,                       TRUE,   FALSE,
7479     EL_CHAR('!'),                       -1, -1
7480   },
7481   {
7482     Xalpha_apost,                       TRUE,   FALSE,
7483     EL_CHAR('\''),                      -1, -1
7484   },
7485   {
7486     Xalpha_comma,                       TRUE,   FALSE,
7487     EL_CHAR(','),                       -1, -1
7488   },
7489   {
7490     Xalpha_minus,                       TRUE,   FALSE,
7491     EL_CHAR('-'),                       -1, -1
7492   },
7493   {
7494     Xalpha_perio,                       TRUE,   FALSE,
7495     EL_CHAR('.'),                       -1, -1
7496   },
7497   {
7498     Xalpha_colon,                       TRUE,   FALSE,
7499     EL_CHAR(':'),                       -1, -1
7500   },
7501   {
7502     Xalpha_quest,                       TRUE,   FALSE,
7503     EL_CHAR('?'),                       -1, -1
7504   },
7505   {
7506     Xalpha_a,                           TRUE,   FALSE,
7507     EL_CHAR('A'),                       -1, -1
7508   },
7509   {
7510     Xalpha_b,                           TRUE,   FALSE,
7511     EL_CHAR('B'),                       -1, -1
7512   },
7513   {
7514     Xalpha_c,                           TRUE,   FALSE,
7515     EL_CHAR('C'),                       -1, -1
7516   },
7517   {
7518     Xalpha_d,                           TRUE,   FALSE,
7519     EL_CHAR('D'),                       -1, -1
7520   },
7521   {
7522     Xalpha_e,                           TRUE,   FALSE,
7523     EL_CHAR('E'),                       -1, -1
7524   },
7525   {
7526     Xalpha_f,                           TRUE,   FALSE,
7527     EL_CHAR('F'),                       -1, -1
7528   },
7529   {
7530     Xalpha_g,                           TRUE,   FALSE,
7531     EL_CHAR('G'),                       -1, -1
7532   },
7533   {
7534     Xalpha_h,                           TRUE,   FALSE,
7535     EL_CHAR('H'),                       -1, -1
7536   },
7537   {
7538     Xalpha_i,                           TRUE,   FALSE,
7539     EL_CHAR('I'),                       -1, -1
7540   },
7541   {
7542     Xalpha_j,                           TRUE,   FALSE,
7543     EL_CHAR('J'),                       -1, -1
7544   },
7545   {
7546     Xalpha_k,                           TRUE,   FALSE,
7547     EL_CHAR('K'),                       -1, -1
7548   },
7549   {
7550     Xalpha_l,                           TRUE,   FALSE,
7551     EL_CHAR('L'),                       -1, -1
7552   },
7553   {
7554     Xalpha_m,                           TRUE,   FALSE,
7555     EL_CHAR('M'),                       -1, -1
7556   },
7557   {
7558     Xalpha_n,                           TRUE,   FALSE,
7559     EL_CHAR('N'),                       -1, -1
7560   },
7561   {
7562     Xalpha_o,                           TRUE,   FALSE,
7563     EL_CHAR('O'),                       -1, -1
7564   },
7565   {
7566     Xalpha_p,                           TRUE,   FALSE,
7567     EL_CHAR('P'),                       -1, -1
7568   },
7569   {
7570     Xalpha_q,                           TRUE,   FALSE,
7571     EL_CHAR('Q'),                       -1, -1
7572   },
7573   {
7574     Xalpha_r,                           TRUE,   FALSE,
7575     EL_CHAR('R'),                       -1, -1
7576   },
7577   {
7578     Xalpha_s,                           TRUE,   FALSE,
7579     EL_CHAR('S'),                       -1, -1
7580   },
7581   {
7582     Xalpha_t,                           TRUE,   FALSE,
7583     EL_CHAR('T'),                       -1, -1
7584   },
7585   {
7586     Xalpha_u,                           TRUE,   FALSE,
7587     EL_CHAR('U'),                       -1, -1
7588   },
7589   {
7590     Xalpha_v,                           TRUE,   FALSE,
7591     EL_CHAR('V'),                       -1, -1
7592   },
7593   {
7594     Xalpha_w,                           TRUE,   FALSE,
7595     EL_CHAR('W'),                       -1, -1
7596   },
7597   {
7598     Xalpha_x,                           TRUE,   FALSE,
7599     EL_CHAR('X'),                       -1, -1
7600   },
7601   {
7602     Xalpha_y,                           TRUE,   FALSE,
7603     EL_CHAR('Y'),                       -1, -1
7604   },
7605   {
7606     Xalpha_z,                           TRUE,   FALSE,
7607     EL_CHAR('Z'),                       -1, -1
7608   },
7609   {
7610     Xalpha_arrow_e,                     TRUE,   FALSE,
7611     EL_CHAR('>'),                       -1, -1
7612   },
7613   {
7614     Xalpha_arrow_w,                     TRUE,   FALSE,
7615     EL_CHAR('<'),                       -1, -1
7616   },
7617   {
7618     Xalpha_copyr,                       TRUE,   FALSE,
7619     EL_CHAR(CHAR_BYTE_COPYRIGHT),       -1, -1
7620   },
7621
7622   {
7623     Ykey_1_blank,                       FALSE,  FALSE,
7624     EL_EM_KEY_1,                        ACTION_COLLECTING, -1
7625   },
7626   {
7627     Ykey_2_blank,                       FALSE,  FALSE,
7628     EL_EM_KEY_2,                        ACTION_COLLECTING, -1
7629   },
7630   {
7631     Ykey_3_blank,                       FALSE,  FALSE,
7632     EL_EM_KEY_3,                        ACTION_COLLECTING, -1
7633   },
7634   {
7635     Ykey_4_blank,                       FALSE,  FALSE,
7636     EL_EM_KEY_4,                        ACTION_COLLECTING, -1
7637   },
7638   {
7639     Ykey_5_blank,                       FALSE,  FALSE,
7640     EL_EMC_KEY_5,                       ACTION_COLLECTING, -1
7641   },
7642   {
7643     Ykey_6_blank,                       FALSE,  FALSE,
7644     EL_EMC_KEY_6,                       ACTION_COLLECTING, -1
7645   },
7646   {
7647     Ykey_7_blank,                       FALSE,  FALSE,
7648     EL_EMC_KEY_7,                       ACTION_COLLECTING, -1
7649   },
7650   {
7651     Ykey_8_blank,                       FALSE,  FALSE,
7652     EL_EMC_KEY_8,                       ACTION_COLLECTING, -1
7653   },
7654   {
7655     Ylenses_blank,                      FALSE,  FALSE,
7656     EL_EMC_LENSES,                      ACTION_COLLECTING, -1
7657   },
7658   {
7659     Ymagnify_blank,                     FALSE,  FALSE,
7660     EL_EMC_MAGNIFIER,                   ACTION_COLLECTING, -1
7661   },
7662   {
7663     Ygrass_blank,                       FALSE,  FALSE,
7664     EL_EMC_GRASS,                       ACTION_SNAPPING, -1
7665   },
7666   {
7667     Ydirt_blank,                        FALSE,  FALSE,
7668     EL_SAND,                            ACTION_SNAPPING, -1
7669   },
7670
7671   {
7672     -1,                                 FALSE,  FALSE,
7673     -1,                                 -1, -1
7674   }
7675 };
7676
7677 static struct Mapping_EM_to_RND_player
7678 {
7679   int action_em;
7680   int player_nr;
7681
7682   int element_rnd;
7683   int action;
7684   int direction;
7685 }
7686 em_player_mapping_list[MAX_PLAYERS * PLY_MAX + 1] =
7687 {
7688   {
7689     PLY_walk_n,                         0,
7690     EL_PLAYER_1,                        ACTION_MOVING, MV_BIT_UP,
7691   },
7692   {
7693     PLY_walk_e,                         0,
7694     EL_PLAYER_1,                        ACTION_MOVING, MV_BIT_RIGHT,
7695   },
7696   {
7697     PLY_walk_s,                         0,
7698     EL_PLAYER_1,                        ACTION_MOVING, MV_BIT_DOWN,
7699   },
7700   {
7701     PLY_walk_w,                         0,
7702     EL_PLAYER_1,                        ACTION_MOVING, MV_BIT_LEFT,
7703   },
7704   {
7705     PLY_push_n,                         0,
7706     EL_PLAYER_1,                        ACTION_PUSHING, MV_BIT_UP,
7707   },
7708   {
7709     PLY_push_e,                         0,
7710     EL_PLAYER_1,                        ACTION_PUSHING, MV_BIT_RIGHT,
7711   },
7712   {
7713     PLY_push_s,                         0,
7714     EL_PLAYER_1,                        ACTION_PUSHING, MV_BIT_DOWN,
7715   },
7716   {
7717     PLY_push_w,                         0,
7718     EL_PLAYER_1,                        ACTION_PUSHING, MV_BIT_LEFT,
7719   },
7720   {
7721     PLY_shoot_n,                        0,
7722     EL_PLAYER_1,                        ACTION_SNAPPING, MV_BIT_UP,
7723   },
7724   {
7725     PLY_shoot_e,                        0,
7726     EL_PLAYER_1,                        ACTION_SNAPPING, MV_BIT_RIGHT,
7727   },
7728   {
7729     PLY_shoot_s,                        0,
7730     EL_PLAYER_1,                        ACTION_SNAPPING, MV_BIT_DOWN,
7731   },
7732   {
7733     PLY_shoot_w,                        0,
7734     EL_PLAYER_1,                        ACTION_SNAPPING, MV_BIT_LEFT,
7735   },
7736   {
7737     PLY_walk_n,                         1,
7738     EL_PLAYER_2,                        ACTION_MOVING, MV_BIT_UP,
7739   },
7740   {
7741     PLY_walk_e,                         1,
7742     EL_PLAYER_2,                        ACTION_MOVING, MV_BIT_RIGHT,
7743   },
7744   {
7745     PLY_walk_s,                         1,
7746     EL_PLAYER_2,                        ACTION_MOVING, MV_BIT_DOWN,
7747   },
7748   {
7749     PLY_walk_w,                         1,
7750     EL_PLAYER_2,                        ACTION_MOVING, MV_BIT_LEFT,
7751   },
7752   {
7753     PLY_push_n,                         1,
7754     EL_PLAYER_2,                        ACTION_PUSHING, MV_BIT_UP,
7755   },
7756   {
7757     PLY_push_e,                         1,
7758     EL_PLAYER_2,                        ACTION_PUSHING, MV_BIT_RIGHT,
7759   },
7760   {
7761     PLY_push_s,                         1,
7762     EL_PLAYER_2,                        ACTION_PUSHING, MV_BIT_DOWN,
7763   },
7764   {
7765     PLY_push_w,                         1,
7766     EL_PLAYER_2,                        ACTION_PUSHING, MV_BIT_LEFT,
7767   },
7768   {
7769     PLY_shoot_n,                        1,
7770     EL_PLAYER_2,                        ACTION_SNAPPING, MV_BIT_UP,
7771   },
7772   {
7773     PLY_shoot_e,                        1,
7774     EL_PLAYER_2,                        ACTION_SNAPPING, MV_BIT_RIGHT,
7775   },
7776   {
7777     PLY_shoot_s,                        1,
7778     EL_PLAYER_2,                        ACTION_SNAPPING, MV_BIT_DOWN,
7779   },
7780   {
7781     PLY_shoot_w,                        1,
7782     EL_PLAYER_2,                        ACTION_SNAPPING, MV_BIT_LEFT,
7783   },
7784   {
7785     PLY_still,                          0,
7786     EL_PLAYER_1,                        ACTION_DEFAULT, -1,
7787   },
7788   {
7789     PLY_still,                          1,
7790     EL_PLAYER_2,                        ACTION_DEFAULT, -1,
7791   },
7792   {
7793     PLY_walk_n,                         2,
7794     EL_PLAYER_3,                        ACTION_MOVING, MV_BIT_UP,
7795   },
7796   {
7797     PLY_walk_e,                         2,
7798     EL_PLAYER_3,                        ACTION_MOVING, MV_BIT_RIGHT,
7799   },
7800   {
7801     PLY_walk_s,                         2,
7802     EL_PLAYER_3,                        ACTION_MOVING, MV_BIT_DOWN,
7803   },
7804   {
7805     PLY_walk_w,                         2,
7806     EL_PLAYER_3,                        ACTION_MOVING, MV_BIT_LEFT,
7807   },
7808   {
7809     PLY_push_n,                         2,
7810     EL_PLAYER_3,                        ACTION_PUSHING, MV_BIT_UP,
7811   },
7812   {
7813     PLY_push_e,                         2,
7814     EL_PLAYER_3,                        ACTION_PUSHING, MV_BIT_RIGHT,
7815   },
7816   {
7817     PLY_push_s,                         2,
7818     EL_PLAYER_3,                        ACTION_PUSHING, MV_BIT_DOWN,
7819   },
7820   {
7821     PLY_push_w,                         2,
7822     EL_PLAYER_3,                        ACTION_PUSHING, MV_BIT_LEFT,
7823   },
7824   {
7825     PLY_shoot_n,                        2,
7826     EL_PLAYER_3,                        ACTION_SNAPPING, MV_BIT_UP,
7827   },
7828   {
7829     PLY_shoot_e,                        2,
7830     EL_PLAYER_3,                        ACTION_SNAPPING, MV_BIT_RIGHT,
7831   },
7832   {
7833     PLY_shoot_s,                        2,
7834     EL_PLAYER_3,                        ACTION_SNAPPING, MV_BIT_DOWN,
7835   },
7836   {
7837     PLY_shoot_w,                        2,
7838     EL_PLAYER_3,                        ACTION_SNAPPING, MV_BIT_LEFT,
7839   },
7840   {
7841     PLY_walk_n,                         3,
7842     EL_PLAYER_4,                        ACTION_MOVING, MV_BIT_UP,
7843   },
7844   {
7845     PLY_walk_e,                         3,
7846     EL_PLAYER_4,                        ACTION_MOVING, MV_BIT_RIGHT,
7847   },
7848   {
7849     PLY_walk_s,                         3,
7850     EL_PLAYER_4,                        ACTION_MOVING, MV_BIT_DOWN,
7851   },
7852   {
7853     PLY_walk_w,                         3,
7854     EL_PLAYER_4,                        ACTION_MOVING, MV_BIT_LEFT,
7855   },
7856   {
7857     PLY_push_n,                         3,
7858     EL_PLAYER_4,                        ACTION_PUSHING, MV_BIT_UP,
7859   },
7860   {
7861     PLY_push_e,                         3,
7862     EL_PLAYER_4,                        ACTION_PUSHING, MV_BIT_RIGHT,
7863   },
7864   {
7865     PLY_push_s,                         3,
7866     EL_PLAYER_4,                        ACTION_PUSHING, MV_BIT_DOWN,
7867   },
7868   {
7869     PLY_push_w,                         3,
7870     EL_PLAYER_4,                        ACTION_PUSHING, MV_BIT_LEFT,
7871   },
7872   {
7873     PLY_shoot_n,                        3,
7874     EL_PLAYER_4,                        ACTION_SNAPPING, MV_BIT_UP,
7875   },
7876   {
7877     PLY_shoot_e,                        3,
7878     EL_PLAYER_4,                        ACTION_SNAPPING, MV_BIT_RIGHT,
7879   },
7880   {
7881     PLY_shoot_s,                        3,
7882     EL_PLAYER_4,                        ACTION_SNAPPING, MV_BIT_DOWN,
7883   },
7884   {
7885     PLY_shoot_w,                        3,
7886     EL_PLAYER_4,                        ACTION_SNAPPING, MV_BIT_LEFT,
7887   },
7888   {
7889     PLY_still,                          2,
7890     EL_PLAYER_3,                        ACTION_DEFAULT, -1,
7891   },
7892   {
7893     PLY_still,                          3,
7894     EL_PLAYER_4,                        ACTION_DEFAULT, -1,
7895   },
7896
7897   {
7898     -1,                                 -1,
7899     -1,                                 -1, -1
7900   }
7901 };
7902
7903 int map_element_RND_to_EM_cave(int element_rnd)
7904 {
7905   static unsigned short mapping_RND_to_EM[NUM_FILE_ELEMENTS];
7906   static boolean mapping_initialized = FALSE;
7907
7908   if (!mapping_initialized)
7909   {
7910     int i;
7911
7912     // return "Xalpha_quest" for all undefined elements in mapping array
7913     for (i = 0; i < NUM_FILE_ELEMENTS; i++)
7914       mapping_RND_to_EM[i] = Xalpha_quest;
7915
7916     for (i = 0; em_object_mapping_list[i].element_em != -1; i++)
7917       if (em_object_mapping_list[i].is_rnd_to_em_mapping)
7918         mapping_RND_to_EM[em_object_mapping_list[i].element_rnd] =
7919           em_object_mapping_list[i].element_em;
7920
7921     mapping_initialized = TRUE;
7922   }
7923
7924   if (element_rnd < 0 || element_rnd >= NUM_FILE_ELEMENTS)
7925   {
7926     Warn("invalid RND level element %d", element_rnd);
7927
7928     return EL_UNKNOWN;
7929   }
7930
7931   return map_em_element_X_to_C(mapping_RND_to_EM[element_rnd]);
7932 }
7933
7934 int map_element_EM_to_RND_cave(int element_em_cave)
7935 {
7936   static unsigned short mapping_EM_to_RND[GAME_TILE_MAX];
7937   static boolean mapping_initialized = FALSE;
7938
7939   if (!mapping_initialized)
7940   {
7941     int i;
7942
7943     // return "EL_UNKNOWN" for all undefined elements in mapping array
7944     for (i = 0; i < GAME_TILE_MAX; i++)
7945       mapping_EM_to_RND[i] = EL_UNKNOWN;
7946
7947     for (i = 0; em_object_mapping_list[i].element_em != -1; i++)
7948       mapping_EM_to_RND[em_object_mapping_list[i].element_em] =
7949         em_object_mapping_list[i].element_rnd;
7950
7951     mapping_initialized = TRUE;
7952   }
7953
7954   if (element_em_cave < 0 || element_em_cave >= CAVE_TILE_MAX)
7955   {
7956     Warn("invalid EM cave element %d", element_em_cave);
7957
7958     return EL_UNKNOWN;
7959   }
7960
7961   return mapping_EM_to_RND[map_em_element_C_to_X(element_em_cave)];
7962 }
7963
7964 int map_element_EM_to_RND_game(int element_em_game)
7965 {
7966   static unsigned short mapping_EM_to_RND[GAME_TILE_MAX];
7967   static boolean mapping_initialized = FALSE;
7968
7969   if (!mapping_initialized)
7970   {
7971     int i;
7972
7973     // return "EL_UNKNOWN" for all undefined elements in mapping array
7974     for (i = 0; i < GAME_TILE_MAX; i++)
7975       mapping_EM_to_RND[i] = EL_UNKNOWN;
7976
7977     for (i = 0; em_object_mapping_list[i].element_em != -1; i++)
7978       mapping_EM_to_RND[em_object_mapping_list[i].element_em] =
7979         em_object_mapping_list[i].element_rnd;
7980
7981     mapping_initialized = TRUE;
7982   }
7983
7984   if (element_em_game < 0 || element_em_game >= GAME_TILE_MAX)
7985   {
7986     Warn("invalid EM game element %d", element_em_game);
7987
7988     return EL_UNKNOWN;
7989   }
7990
7991   return mapping_EM_to_RND[element_em_game];
7992 }
7993
7994 void map_android_clone_elements_RND_to_EM(struct LevelInfo *level)
7995 {
7996   struct LevelInfo_EM *level_em = level->native_em_level;
7997   struct CAVE *cav = level_em->cav;
7998   int i, j;
7999
8000   for (i = 0; i < GAME_TILE_MAX; i++)
8001     cav->android_array[i] = Cblank;
8002
8003   for (i = 0; i < level->num_android_clone_elements; i++)
8004   {
8005     int element_rnd = level->android_clone_element[i];
8006     int element_em_cave = map_element_RND_to_EM_cave(element_rnd);
8007
8008     for (j = 0; em_object_mapping_list[j].element_em != -1; j++)
8009       if (em_object_mapping_list[j].element_rnd == element_rnd)
8010         cav->android_array[em_object_mapping_list[j].element_em] =
8011           element_em_cave;
8012   }
8013 }
8014
8015 void map_android_clone_elements_EM_to_RND(struct LevelInfo *level)
8016 {
8017   struct LevelInfo_EM *level_em = level->native_em_level;
8018   struct CAVE *cav = level_em->cav;
8019   int i, j;
8020
8021   level->num_android_clone_elements = 0;
8022
8023   for (i = 0; i < GAME_TILE_MAX; i++)
8024   {
8025     int element_em_cave = cav->android_array[i];
8026     int element_rnd;
8027     boolean element_found = FALSE;
8028
8029     if (element_em_cave == Cblank)
8030       continue;
8031
8032     element_rnd = map_element_EM_to_RND_cave(element_em_cave);
8033
8034     for (j = 0; j < level->num_android_clone_elements; j++)
8035       if (level->android_clone_element[j] == element_rnd)
8036         element_found = TRUE;
8037
8038     if (!element_found)
8039     {
8040       level->android_clone_element[level->num_android_clone_elements++] =
8041         element_rnd;
8042
8043       if (level->num_android_clone_elements == MAX_ANDROID_ELEMENTS)
8044         break;
8045     }
8046   }
8047
8048   if (level->num_android_clone_elements == 0)
8049   {
8050     level->num_android_clone_elements = 1;
8051     level->android_clone_element[0] = EL_EMPTY;
8052   }
8053 }
8054
8055 int map_direction_RND_to_EM(int direction)
8056 {
8057   return (direction == MV_UP    ? 0 :
8058           direction == MV_RIGHT ? 1 :
8059           direction == MV_DOWN  ? 2 :
8060           direction == MV_LEFT  ? 3 :
8061           -1);
8062 }
8063
8064 int map_direction_EM_to_RND(int direction)
8065 {
8066   return (direction == 0 ? MV_UP    :
8067           direction == 1 ? MV_RIGHT :
8068           direction == 2 ? MV_DOWN  :
8069           direction == 3 ? MV_LEFT  :
8070           MV_NONE);
8071 }
8072
8073 int map_element_RND_to_SP(int element_rnd)
8074 {
8075   int element_sp = 0x20;        // map unknown elements to yellow "hardware"
8076
8077   if (element_rnd >= EL_SP_START &&
8078       element_rnd <= EL_SP_END)
8079     element_sp = element_rnd - EL_SP_START;
8080   else if (element_rnd == EL_EMPTY_SPACE)
8081     element_sp = 0x00;
8082   else if (element_rnd == EL_INVISIBLE_WALL)
8083     element_sp = 0x28;
8084
8085   return element_sp;
8086 }
8087
8088 int map_element_SP_to_RND(int element_sp)
8089 {
8090   int element_rnd = EL_UNKNOWN;
8091
8092   if (element_sp >= 0x00 &&
8093       element_sp <= 0x27)
8094     element_rnd = EL_SP_START + element_sp;
8095   else if (element_sp == 0x28)
8096     element_rnd = EL_INVISIBLE_WALL;
8097
8098   return element_rnd;
8099 }
8100
8101 int map_action_SP_to_RND(int action_sp)
8102 {
8103   switch (action_sp)
8104   {
8105     case actActive:             return ACTION_ACTIVE;
8106     case actImpact:             return ACTION_IMPACT;
8107     case actExploding:          return ACTION_EXPLODING;
8108     case actDigging:            return ACTION_DIGGING;
8109     case actSnapping:           return ACTION_SNAPPING;
8110     case actCollecting:         return ACTION_COLLECTING;
8111     case actPassing:            return ACTION_PASSING;
8112     case actPushing:            return ACTION_PUSHING;
8113     case actDropping:           return ACTION_DROPPING;
8114
8115     default:                    return ACTION_DEFAULT;
8116   }
8117 }
8118
8119 int map_element_RND_to_MM(int element_rnd)
8120 {
8121   return (element_rnd >= EL_MM_START_1 &&
8122           element_rnd <= EL_MM_END_1 ?
8123           EL_MM_START_1_NATIVE + element_rnd - EL_MM_START_1 :
8124
8125           element_rnd >= EL_MM_START_2 &&
8126           element_rnd <= EL_MM_END_2 ?
8127           EL_MM_START_2_NATIVE + element_rnd - EL_MM_START_2 :
8128
8129           element_rnd >= EL_MM_START_3 &&
8130           element_rnd <= EL_MM_END_3 ?
8131           EL_MM_START_3_NATIVE + element_rnd - EL_MM_START_3 :
8132
8133           element_rnd >= EL_CHAR_START &&
8134           element_rnd <= EL_CHAR_END ?
8135           EL_MM_CHAR_START_NATIVE + element_rnd - EL_CHAR_START :
8136
8137           element_rnd >= EL_MM_RUNTIME_START &&
8138           element_rnd <= EL_MM_RUNTIME_END ?
8139           EL_MM_RUNTIME_START_NATIVE + element_rnd - EL_MM_RUNTIME_START :
8140
8141           EL_MM_EMPTY_NATIVE);
8142 }
8143
8144 int map_element_MM_to_RND(int element_mm)
8145 {
8146   return (element_mm == EL_MM_EMPTY_NATIVE ||
8147           element_mm == EL_DF_EMPTY_NATIVE ?
8148           EL_EMPTY :
8149
8150           element_mm >= EL_MM_START_1_NATIVE &&
8151           element_mm <= EL_MM_END_1_NATIVE ?
8152           EL_MM_START_1 + element_mm - EL_MM_START_1_NATIVE :
8153
8154           element_mm >= EL_MM_START_2_NATIVE &&
8155           element_mm <= EL_MM_END_2_NATIVE ?
8156           EL_MM_START_2 + element_mm - EL_MM_START_2_NATIVE :
8157
8158           element_mm >= EL_MM_START_3_NATIVE &&
8159           element_mm <= EL_MM_END_3_NATIVE ?
8160           EL_MM_START_3 + element_mm - EL_MM_START_3_NATIVE :
8161
8162           element_mm >= EL_MM_CHAR_START_NATIVE &&
8163           element_mm <= EL_MM_CHAR_END_NATIVE ?
8164           EL_CHAR_START + element_mm - EL_MM_CHAR_START_NATIVE :
8165
8166           element_mm >= EL_MM_RUNTIME_START_NATIVE &&
8167           element_mm <= EL_MM_RUNTIME_END_NATIVE ?
8168           EL_MM_RUNTIME_START + element_mm - EL_MM_RUNTIME_START_NATIVE :
8169
8170           EL_EMPTY);
8171 }
8172
8173 int map_action_MM_to_RND(int action_mm)
8174 {
8175   // all MM actions are defined to exactly match their RND counterparts
8176   return action_mm;
8177 }
8178
8179 int map_sound_MM_to_RND(int sound_mm)
8180 {
8181   switch (sound_mm)
8182   {
8183     case SND_MM_GAME_LEVELTIME_CHARGING:
8184       return SND_GAME_LEVELTIME_CHARGING;
8185
8186     case SND_MM_GAME_HEALTH_CHARGING:
8187       return SND_GAME_HEALTH_CHARGING;
8188
8189     default:
8190       return SND_UNDEFINED;
8191   }
8192 }
8193
8194 int map_mm_wall_element(int element)
8195 {
8196   return (element >= EL_MM_STEEL_WALL_START &&
8197           element <= EL_MM_STEEL_WALL_END ?
8198           EL_MM_STEEL_WALL :
8199
8200           element >= EL_MM_WOODEN_WALL_START &&
8201           element <= EL_MM_WOODEN_WALL_END ?
8202           EL_MM_WOODEN_WALL :
8203
8204           element >= EL_MM_ICE_WALL_START &&
8205           element <= EL_MM_ICE_WALL_END ?
8206           EL_MM_ICE_WALL :
8207
8208           element >= EL_MM_AMOEBA_WALL_START &&
8209           element <= EL_MM_AMOEBA_WALL_END ?
8210           EL_MM_AMOEBA_WALL :
8211
8212           element >= EL_DF_STEEL_WALL_START &&
8213           element <= EL_DF_STEEL_WALL_END ?
8214           EL_DF_STEEL_WALL :
8215
8216           element >= EL_DF_WOODEN_WALL_START &&
8217           element <= EL_DF_WOODEN_WALL_END ?
8218           EL_DF_WOODEN_WALL :
8219
8220           element);
8221 }
8222
8223 int map_mm_wall_element_editor(int element)
8224 {
8225   switch (element)
8226   {
8227     case EL_MM_STEEL_WALL:      return EL_MM_STEEL_WALL_START;
8228     case EL_MM_WOODEN_WALL:     return EL_MM_WOODEN_WALL_START;
8229     case EL_MM_ICE_WALL:        return EL_MM_ICE_WALL_START;
8230     case EL_MM_AMOEBA_WALL:     return EL_MM_AMOEBA_WALL_START;
8231     case EL_DF_STEEL_WALL:      return EL_DF_STEEL_WALL_START;
8232     case EL_DF_WOODEN_WALL:     return EL_DF_WOODEN_WALL_START;
8233
8234     default:                    return element;
8235   }
8236 }
8237
8238 int get_next_element(int element)
8239 {
8240   switch (element)
8241   {
8242     case EL_QUICKSAND_FILLING:          return EL_QUICKSAND_FULL;
8243     case EL_QUICKSAND_EMPTYING:         return EL_QUICKSAND_EMPTY;
8244     case EL_QUICKSAND_FAST_FILLING:     return EL_QUICKSAND_FAST_FULL;
8245     case EL_QUICKSAND_FAST_EMPTYING:    return EL_QUICKSAND_FAST_EMPTY;
8246     case EL_MAGIC_WALL_FILLING:         return EL_MAGIC_WALL_FULL;
8247     case EL_MAGIC_WALL_EMPTYING:        return EL_MAGIC_WALL_ACTIVE;
8248     case EL_BD_MAGIC_WALL_FILLING:      return EL_BD_MAGIC_WALL_FULL;
8249     case EL_BD_MAGIC_WALL_EMPTYING:     return EL_BD_MAGIC_WALL_ACTIVE;
8250     case EL_DC_MAGIC_WALL_FILLING:      return EL_DC_MAGIC_WALL_FULL;
8251     case EL_DC_MAGIC_WALL_EMPTYING:     return EL_DC_MAGIC_WALL_ACTIVE;
8252     case EL_AMOEBA_DROPPING:            return EL_AMOEBA_WET;
8253
8254     default:                            return element;
8255   }
8256 }
8257
8258 int el2img_mm(int element_mm)
8259 {
8260   return el2img(map_element_MM_to_RND(element_mm));
8261 }
8262
8263 int el_act2img_mm(int element_mm, int action)
8264 {
8265   return el_act2img(map_element_MM_to_RND(element_mm), action);
8266 }
8267
8268 int el_act_dir2img(int element, int action, int direction)
8269 {
8270   element = GFX_ELEMENT(element);
8271   direction = MV_DIR_TO_BIT(direction); // default: MV_NONE => MV_DOWN
8272
8273   // direction_graphic[][] == graphic[] for undefined direction graphics
8274   return element_info[element].direction_graphic[action][direction];
8275 }
8276
8277 static int el_act_dir2crm(int element, int action, int direction)
8278 {
8279   element = GFX_ELEMENT(element);
8280   direction = MV_DIR_TO_BIT(direction); // default: MV_NONE => MV_DOWN
8281
8282   // direction_graphic[][] == graphic[] for undefined direction graphics
8283   return element_info[element].direction_crumbled[action][direction];
8284 }
8285
8286 int el_act2img(int element, int action)
8287 {
8288   element = GFX_ELEMENT(element);
8289
8290   return element_info[element].graphic[action];
8291 }
8292
8293 int el_act2crm(int element, int action)
8294 {
8295   element = GFX_ELEMENT(element);
8296
8297   return element_info[element].crumbled[action];
8298 }
8299
8300 int el_dir2img(int element, int direction)
8301 {
8302   element = GFX_ELEMENT(element);
8303
8304   return el_act_dir2img(element, ACTION_DEFAULT, direction);
8305 }
8306
8307 int el2baseimg(int element)
8308 {
8309   return element_info[element].graphic[ACTION_DEFAULT];
8310 }
8311
8312 int el2img(int element)
8313 {
8314   element = GFX_ELEMENT(element);
8315
8316   return element_info[element].graphic[ACTION_DEFAULT];
8317 }
8318
8319 int el2edimg(int element)
8320 {
8321   element = GFX_ELEMENT(element);
8322
8323   return element_info[element].special_graphic[GFX_SPECIAL_ARG_EDITOR];
8324 }
8325
8326 int el2preimg(int element)
8327 {
8328   element = GFX_ELEMENT(element);
8329
8330   return element_info[element].special_graphic[GFX_SPECIAL_ARG_PREVIEW];
8331 }
8332
8333 int el2panelimg(int element)
8334 {
8335   element = GFX_ELEMENT(element);
8336
8337   return element_info[element].special_graphic[GFX_SPECIAL_ARG_PANEL];
8338 }
8339
8340 int font2baseimg(int font_nr)
8341 {
8342   return font_info[font_nr].special_graphic[GFX_SPECIAL_ARG_DEFAULT];
8343 }
8344
8345 int getBeltNrFromBeltElement(int element)
8346 {
8347   return (element < EL_CONVEYOR_BELT_2_LEFT ? 0 :
8348           element < EL_CONVEYOR_BELT_3_LEFT ? 1 :
8349           element < EL_CONVEYOR_BELT_4_LEFT ? 2 : 3);
8350 }
8351
8352 int getBeltNrFromBeltActiveElement(int element)
8353 {
8354   return (element < EL_CONVEYOR_BELT_2_LEFT_ACTIVE ? 0 :
8355           element < EL_CONVEYOR_BELT_3_LEFT_ACTIVE ? 1 :
8356           element < EL_CONVEYOR_BELT_4_LEFT_ACTIVE ? 2 : 3);
8357 }
8358
8359 int getBeltNrFromBeltSwitchElement(int element)
8360 {
8361   return (element < EL_CONVEYOR_BELT_2_SWITCH_LEFT ? 0 :
8362           element < EL_CONVEYOR_BELT_3_SWITCH_LEFT ? 1 :
8363           element < EL_CONVEYOR_BELT_4_SWITCH_LEFT ? 2 : 3);
8364 }
8365
8366 int getBeltDirNrFromBeltElement(int element)
8367 {
8368   static int belt_base_element[4] =
8369   {
8370     EL_CONVEYOR_BELT_1_LEFT,
8371     EL_CONVEYOR_BELT_2_LEFT,
8372     EL_CONVEYOR_BELT_3_LEFT,
8373     EL_CONVEYOR_BELT_4_LEFT
8374   };
8375
8376   int belt_nr = getBeltNrFromBeltElement(element);
8377   int belt_dir_nr = element - belt_base_element[belt_nr];
8378
8379   return (belt_dir_nr % 3);
8380 }
8381
8382 int getBeltDirNrFromBeltSwitchElement(int element)
8383 {
8384   static int belt_base_element[4] =
8385   {
8386     EL_CONVEYOR_BELT_1_SWITCH_LEFT,
8387     EL_CONVEYOR_BELT_2_SWITCH_LEFT,
8388     EL_CONVEYOR_BELT_3_SWITCH_LEFT,
8389     EL_CONVEYOR_BELT_4_SWITCH_LEFT
8390   };
8391
8392   int belt_nr = getBeltNrFromBeltSwitchElement(element);
8393   int belt_dir_nr = element - belt_base_element[belt_nr];
8394
8395   return (belt_dir_nr % 3);
8396 }
8397
8398 int getBeltDirFromBeltElement(int element)
8399 {
8400   static int belt_move_dir[3] =
8401   {
8402     MV_LEFT,
8403     MV_NONE,
8404     MV_RIGHT
8405   };
8406
8407   int belt_dir_nr = getBeltDirNrFromBeltElement(element);
8408
8409   return belt_move_dir[belt_dir_nr];
8410 }
8411
8412 int getBeltDirFromBeltSwitchElement(int element)
8413 {
8414   static int belt_move_dir[3] =
8415   {
8416     MV_LEFT,
8417     MV_NONE,
8418     MV_RIGHT
8419   };
8420
8421   int belt_dir_nr = getBeltDirNrFromBeltSwitchElement(element);
8422
8423   return belt_move_dir[belt_dir_nr];
8424 }
8425
8426 int getBeltElementFromBeltNrAndBeltDirNr(int belt_nr, int belt_dir_nr)
8427 {
8428   static int belt_base_element[4] =
8429   {
8430     EL_CONVEYOR_BELT_1_LEFT,
8431     EL_CONVEYOR_BELT_2_LEFT,
8432     EL_CONVEYOR_BELT_3_LEFT,
8433     EL_CONVEYOR_BELT_4_LEFT
8434   };
8435
8436   return belt_base_element[belt_nr] + belt_dir_nr;
8437 }
8438
8439 int getBeltElementFromBeltNrAndBeltDir(int belt_nr, int belt_dir)
8440 {
8441   int belt_dir_nr = (belt_dir == MV_LEFT ? 0 : belt_dir == MV_RIGHT ? 2 : 1);
8442
8443   return getBeltElementFromBeltNrAndBeltDirNr(belt_nr, belt_dir_nr);
8444 }
8445
8446 int getBeltSwitchElementFromBeltNrAndBeltDirNr(int belt_nr, int belt_dir_nr)
8447 {
8448   static int belt_base_element[4] =
8449   {
8450     EL_CONVEYOR_BELT_1_SWITCH_LEFT,
8451     EL_CONVEYOR_BELT_2_SWITCH_LEFT,
8452     EL_CONVEYOR_BELT_3_SWITCH_LEFT,
8453     EL_CONVEYOR_BELT_4_SWITCH_LEFT
8454   };
8455
8456   return belt_base_element[belt_nr] + belt_dir_nr;
8457 }
8458
8459 int getBeltSwitchElementFromBeltNrAndBeltDir(int belt_nr, int belt_dir)
8460 {
8461   int belt_dir_nr = (belt_dir == MV_LEFT ? 0 : belt_dir == MV_RIGHT ? 2 : 1);
8462
8463   return getBeltSwitchElementFromBeltNrAndBeltDirNr(belt_nr, belt_dir_nr);
8464 }
8465
8466 boolean swapTiles_EM(boolean is_pre_emc_cave)
8467 {
8468   return is_pre_emc_cave && leveldir_current->use_emc_tiles;
8469 }
8470
8471 boolean getTeamMode_EM(void)
8472 {
8473   return game.team_mode || network_playing;
8474 }
8475
8476 boolean isActivePlayer_EM(int player_nr)
8477 {
8478   return stored_player[player_nr].active;
8479 }
8480
8481 unsigned int InitRND(int seed)
8482 {
8483   if (level.game_engine_type == GAME_ENGINE_TYPE_EM)
8484     return InitEngineRandom_EM(seed);
8485   else if (level.game_engine_type == GAME_ENGINE_TYPE_SP)
8486     return InitEngineRandom_SP(seed);
8487   else if (level.game_engine_type == GAME_ENGINE_TYPE_MM)
8488     return InitEngineRandom_MM(seed);
8489   else
8490     return InitEngineRandom_RND(seed);
8491 }
8492
8493 static struct Mapping_EM_to_RND_object object_mapping[GAME_TILE_MAX];
8494 static struct Mapping_EM_to_RND_player player_mapping[MAX_PLAYERS][PLY_MAX];
8495
8496 static int get_effective_element_EM(int tile, int frame_em)
8497 {
8498   int element             = object_mapping[tile].element_rnd;
8499   int action              = object_mapping[tile].action;
8500   boolean is_backside     = object_mapping[tile].is_backside;
8501   boolean action_removing = (action == ACTION_DIGGING ||
8502                              action == ACTION_SNAPPING ||
8503                              action == ACTION_COLLECTING);
8504
8505   if (frame_em < 7)
8506   {
8507     switch (tile)
8508     {
8509       case Xsplash_e:
8510       case Xsplash_w:
8511         return (frame_em > 5 ? EL_EMPTY : element);
8512
8513       default:
8514         return element;
8515     }
8516   }
8517   else  // frame_em == 7
8518   {
8519     switch (tile)
8520     {
8521       case Xsplash_e:
8522       case Xsplash_w:
8523         return EL_EMPTY;
8524
8525       case Ynut_stone:
8526         return EL_EMERALD;
8527
8528       case Ydiamond_stone:
8529         return EL_ROCK;
8530
8531       case Xdrip_stretch:
8532       case Xdrip_stretchB:
8533       case Ydrip_1_s:
8534       case Ydrip_1_sB:
8535       case Yball_1:
8536       case Xball_2:
8537       case Yball_2:
8538       case Yball_blank:
8539       case Ykey_1_blank:
8540       case Ykey_2_blank:
8541       case Ykey_3_blank:
8542       case Ykey_4_blank:
8543       case Ykey_5_blank:
8544       case Ykey_6_blank:
8545       case Ykey_7_blank:
8546       case Ykey_8_blank:
8547       case Ylenses_blank:
8548       case Ymagnify_blank:
8549       case Ygrass_blank:
8550       case Ydirt_blank:
8551       case Xsand_stonein_1:
8552       case Xsand_stonein_2:
8553       case Xsand_stonein_3:
8554       case Xsand_stonein_4:
8555         return element;
8556
8557       default:
8558         return (is_backside || action_removing ? EL_EMPTY : element);
8559     }
8560   }
8561 }
8562
8563 static boolean check_linear_animation_EM(int tile)
8564 {
8565   switch (tile)
8566   {
8567     case Xsand_stonesand_1:
8568     case Xsand_stonesand_quickout_1:
8569     case Xsand_sandstone_1:
8570     case Xsand_stonein_1:
8571     case Xsand_stoneout_1:
8572     case Xboom_1:
8573     case Xdynamite_1:
8574     case Ybug_w_n:
8575     case Ybug_n_e:
8576     case Ybug_e_s:
8577     case Ybug_s_w:
8578     case Ybug_e_n:
8579     case Ybug_s_e:
8580     case Ybug_w_s:
8581     case Ybug_n_w:
8582     case Ytank_w_n:
8583     case Ytank_n_e:
8584     case Ytank_e_s:
8585     case Ytank_s_w:
8586     case Ytank_e_n:
8587     case Ytank_s_e:
8588     case Ytank_w_s:
8589     case Ytank_n_w:
8590     case Xsplash_e:
8591     case Xsplash_w:
8592     case Ynut_stone:
8593       return TRUE;
8594   }
8595
8596   return FALSE;
8597 }
8598
8599 static void set_crumbled_graphics_EM(struct GraphicInfo_EM *g_em,
8600                                      boolean has_crumbled_graphics,
8601                                      int crumbled, int sync_frame)
8602 {
8603   // if element can be crumbled, but certain action graphics are just empty
8604   // space (like instantly snapping sand to empty space in 1 frame), do not
8605   // treat these empty space graphics as crumbled graphics in EMC engine
8606   if (crumbled == IMG_EMPTY_SPACE)
8607     has_crumbled_graphics = FALSE;
8608
8609   if (has_crumbled_graphics)
8610   {
8611     struct GraphicInfo *g_crumbled = &graphic_info[crumbled];
8612     int frame_crumbled = getAnimationFrame(g_crumbled->anim_frames,
8613                                            g_crumbled->anim_delay,
8614                                            g_crumbled->anim_mode,
8615                                            g_crumbled->anim_start_frame,
8616                                            sync_frame);
8617
8618     getGraphicSource(crumbled, frame_crumbled, &g_em->crumbled_bitmap,
8619                      &g_em->crumbled_src_x, &g_em->crumbled_src_y);
8620
8621     g_em->crumbled_border_size = graphic_info[crumbled].border_size;
8622     g_em->crumbled_tile_size = graphic_info[crumbled].tile_size;
8623
8624     g_em->has_crumbled_graphics = TRUE;
8625   }
8626   else
8627   {
8628     g_em->crumbled_bitmap = NULL;
8629     g_em->crumbled_src_x = 0;
8630     g_em->crumbled_src_y = 0;
8631     g_em->crumbled_border_size = 0;
8632     g_em->crumbled_tile_size = 0;
8633
8634     g_em->has_crumbled_graphics = FALSE;
8635   }
8636 }
8637
8638 #if 0
8639 void ResetGfxAnimation_EM(int x, int y, int tile)
8640 {
8641   GfxFrame[x][y] = 0;
8642 }
8643 #endif
8644
8645 void SetGfxAnimation_EM(struct GraphicInfo_EM *g_em,
8646                         int tile, int frame_em, int x, int y)
8647 {
8648   int action = object_mapping[tile].action;
8649   int direction = object_mapping[tile].direction;
8650   int effective_element = get_effective_element_EM(tile, frame_em);
8651   int graphic = (direction == MV_NONE ?
8652                  el_act2img(effective_element, action) :
8653                  el_act_dir2img(effective_element, action, direction));
8654   struct GraphicInfo *g = &graphic_info[graphic];
8655   int sync_frame;
8656   boolean action_removing = (action == ACTION_DIGGING ||
8657                              action == ACTION_SNAPPING ||
8658                              action == ACTION_COLLECTING);
8659   boolean action_moving   = (action == ACTION_FALLING ||
8660                              action == ACTION_MOVING ||
8661                              action == ACTION_PUSHING ||
8662                              action == ACTION_EATING ||
8663                              action == ACTION_FILLING ||
8664                              action == ACTION_EMPTYING);
8665   boolean action_falling  = (action == ACTION_FALLING ||
8666                              action == ACTION_FILLING ||
8667                              action == ACTION_EMPTYING);
8668
8669   // special case: graphic uses "2nd movement tile" and has defined
8670   // 7 frames for movement animation (or less) => use default graphic
8671   // for last (8th) frame which ends the movement animation
8672   if (g->double_movement && g->anim_frames < 8 && frame_em == 7)
8673   {
8674     action = ACTION_DEFAULT;    // (keep action_* unchanged for now)
8675     graphic = (direction == MV_NONE ?
8676                el_act2img(effective_element, action) :
8677                el_act_dir2img(effective_element, action, direction));
8678
8679     g = &graphic_info[graphic];
8680   }
8681
8682   if ((action_removing || check_linear_animation_EM(tile)) && frame_em == 0)
8683   {
8684     GfxFrame[x][y] = 0;
8685   }
8686   else if (action_moving)
8687   {
8688     boolean is_backside = object_mapping[tile].is_backside;
8689
8690     if (is_backside)
8691     {
8692       int direction = object_mapping[tile].direction;
8693       int move_dir = (action_falling ? MV_DOWN : direction);
8694
8695       GfxFrame[x][y]++;
8696
8697 #if 1
8698       // !!! TEST !!! NEW !!! DOES NOT WORK RIGHT YET !!!
8699       if (g->double_movement && frame_em == 0)
8700         GfxFrame[x][y] = 0;
8701 #endif
8702
8703       if (move_dir == MV_LEFT)
8704         GfxFrame[x - 1][y] = GfxFrame[x][y];
8705       else if (move_dir == MV_RIGHT)
8706         GfxFrame[x + 1][y] = GfxFrame[x][y];
8707       else if (move_dir == MV_UP)
8708         GfxFrame[x][y - 1] = GfxFrame[x][y];
8709       else if (move_dir == MV_DOWN)
8710         GfxFrame[x][y + 1] = GfxFrame[x][y];
8711     }
8712   }
8713   else
8714   {
8715     GfxFrame[x][y]++;
8716
8717     // special case: animation for Xsand_stonesand_quickout_1/2 twice as fast
8718     if (tile == Xsand_stonesand_quickout_1 ||
8719         tile == Xsand_stonesand_quickout_2)
8720       GfxFrame[x][y]++;
8721   }
8722
8723   if (graphic_info[graphic].anim_global_sync)
8724     sync_frame = FrameCounter;
8725   else if (graphic_info[graphic].anim_global_anim_sync)
8726     sync_frame = getGlobalAnimSyncFrame();
8727   else if (IN_FIELD(x, y, MAX_LEV_FIELDX, MAX_LEV_FIELDY))
8728     sync_frame = GfxFrame[x][y];
8729   else
8730     sync_frame = 0;     // playfield border (pseudo steel)
8731
8732   SetRandomAnimationValue(x, y);
8733
8734   int frame = getAnimationFrame(g->anim_frames,
8735                                 g->anim_delay,
8736                                 g->anim_mode,
8737                                 g->anim_start_frame,
8738                                 sync_frame);
8739
8740   g_em->unique_identifier =
8741     (graphic << 16) | ((frame % 8) << 12) | (g_em->width << 6) | g_em->height;
8742 }
8743
8744 void getGraphicSourceObjectExt_EM(struct GraphicInfo_EM *g_em,
8745                                   int tile, int frame_em, int x, int y)
8746 {
8747   int action = object_mapping[tile].action;
8748   int direction = object_mapping[tile].direction;
8749   boolean is_backside = object_mapping[tile].is_backside;
8750   int effective_element = get_effective_element_EM(tile, frame_em);
8751   int effective_action = action;
8752   int graphic = (direction == MV_NONE ?
8753                  el_act2img(effective_element, effective_action) :
8754                  el_act_dir2img(effective_element, effective_action,
8755                                 direction));
8756   int crumbled = (direction == MV_NONE ?
8757                   el_act2crm(effective_element, effective_action) :
8758                   el_act_dir2crm(effective_element, effective_action,
8759                                  direction));
8760   int base_graphic = el_act2img(effective_element, ACTION_DEFAULT);
8761   int base_crumbled = el_act2crm(effective_element, ACTION_DEFAULT);
8762   boolean has_crumbled_graphics = (base_crumbled != base_graphic);
8763   struct GraphicInfo *g = &graphic_info[graphic];
8764   int sync_frame;
8765
8766   // special case: graphic uses "2nd movement tile" and has defined
8767   // 7 frames for movement animation (or less) => use default graphic
8768   // for last (8th) frame which ends the movement animation
8769   if (g->double_movement && g->anim_frames < 8 && frame_em == 7)
8770   {
8771     effective_action = ACTION_DEFAULT;
8772     graphic = (direction == MV_NONE ?
8773                el_act2img(effective_element, effective_action) :
8774                el_act_dir2img(effective_element, effective_action,
8775                               direction));
8776     crumbled = (direction == MV_NONE ?
8777                 el_act2crm(effective_element, effective_action) :
8778                 el_act_dir2crm(effective_element, effective_action,
8779                                direction));
8780
8781     g = &graphic_info[graphic];
8782   }
8783
8784   if (graphic_info[graphic].anim_global_sync)
8785     sync_frame = FrameCounter;
8786   else if (graphic_info[graphic].anim_global_anim_sync)
8787     sync_frame = getGlobalAnimSyncFrame();
8788   else if (IN_FIELD(x, y, MAX_LEV_FIELDX, MAX_LEV_FIELDY))
8789     sync_frame = GfxFrame[x][y];
8790   else
8791     sync_frame = 0;     // playfield border (pseudo steel)
8792
8793   SetRandomAnimationValue(x, y);
8794
8795   int frame = getAnimationFrame(g->anim_frames,
8796                                 g->anim_delay,
8797                                 g->anim_mode,
8798                                 g->anim_start_frame,
8799                                 sync_frame);
8800
8801   getGraphicSourceExt(graphic, frame, &g_em->bitmap, &g_em->src_x, &g_em->src_y,
8802                       g->double_movement && is_backside);
8803
8804   // (updating the "crumbled" graphic definitions is probably not really needed,
8805   // as animations for crumbled graphics can't be longer than one EMC cycle)
8806   set_crumbled_graphics_EM(g_em, has_crumbled_graphics, crumbled,
8807                            sync_frame);
8808 }
8809
8810 void getGraphicSourcePlayerExt_EM(struct GraphicInfo_EM *g_em,
8811                                   int player_nr, int anim, int frame_em)
8812 {
8813   int element   = player_mapping[player_nr][anim].element_rnd;
8814   int action    = player_mapping[player_nr][anim].action;
8815   int direction = player_mapping[player_nr][anim].direction;
8816   int graphic = (direction == MV_NONE ?
8817                  el_act2img(element, action) :
8818                  el_act_dir2img(element, action, direction));
8819   struct GraphicInfo *g = &graphic_info[graphic];
8820   int sync_frame;
8821
8822   InitPlayerGfxAnimation(&stored_player[player_nr], action, direction);
8823
8824   stored_player[player_nr].StepFrame = frame_em;
8825
8826   sync_frame = stored_player[player_nr].Frame;
8827
8828   int frame = getAnimationFrame(g->anim_frames,
8829                                 g->anim_delay,
8830                                 g->anim_mode,
8831                                 g->anim_start_frame,
8832                                 sync_frame);
8833
8834   getGraphicSourceExt(graphic, frame, &g_em->bitmap,
8835                       &g_em->src_x, &g_em->src_y, FALSE);
8836 }
8837
8838 void InitGraphicInfo_EM(void)
8839 {
8840   int i, j, p;
8841
8842   // always start with reliable default values
8843   for (i = 0; i < GAME_TILE_MAX; i++)
8844   {
8845     object_mapping[i].element_rnd = EL_UNKNOWN;
8846     object_mapping[i].is_backside = FALSE;
8847     object_mapping[i].action = ACTION_DEFAULT;
8848     object_mapping[i].direction = MV_NONE;
8849   }
8850
8851   // always start with reliable default values
8852   for (p = 0; p < MAX_PLAYERS; p++)
8853   {
8854     for (i = 0; i < PLY_MAX; i++)
8855     {
8856       player_mapping[p][i].element_rnd = EL_UNKNOWN;
8857       player_mapping[p][i].action = ACTION_DEFAULT;
8858       player_mapping[p][i].direction = MV_NONE;
8859     }
8860   }
8861
8862   for (i = 0; em_object_mapping_list[i].element_em != -1; i++)
8863   {
8864     int e = em_object_mapping_list[i].element_em;
8865
8866     object_mapping[e].element_rnd = em_object_mapping_list[i].element_rnd;
8867     object_mapping[e].is_backside = em_object_mapping_list[i].is_backside;
8868
8869     if (em_object_mapping_list[i].action != -1)
8870       object_mapping[e].action = em_object_mapping_list[i].action;
8871
8872     if (em_object_mapping_list[i].direction != -1)
8873       object_mapping[e].direction =
8874         MV_DIR_FROM_BIT(em_object_mapping_list[i].direction);
8875   }
8876
8877   for (i = 0; em_player_mapping_list[i].action_em != -1; i++)
8878   {
8879     int a = em_player_mapping_list[i].action_em;
8880     int p = em_player_mapping_list[i].player_nr;
8881
8882     player_mapping[p][a].element_rnd = em_player_mapping_list[i].element_rnd;
8883
8884     if (em_player_mapping_list[i].action != -1)
8885       player_mapping[p][a].action = em_player_mapping_list[i].action;
8886
8887     if (em_player_mapping_list[i].direction != -1)
8888       player_mapping[p][a].direction =
8889         MV_DIR_FROM_BIT(em_player_mapping_list[i].direction);
8890   }
8891
8892   for (i = 0; i < GAME_TILE_MAX; i++)
8893   {
8894     int element = object_mapping[i].element_rnd;
8895     int action = object_mapping[i].action;
8896     int direction = object_mapping[i].direction;
8897     boolean is_backside = object_mapping[i].is_backside;
8898     boolean action_exploding = ((action == ACTION_EXPLODING ||
8899                                  action == ACTION_SMASHED_BY_ROCK ||
8900                                  action == ACTION_SMASHED_BY_SPRING) &&
8901                                 element != EL_DIAMOND);
8902     boolean action_active = (action == ACTION_ACTIVE);
8903     boolean action_other = (action == ACTION_OTHER);
8904
8905     for (j = 0; j < 8; j++)
8906     {
8907       int effective_element = get_effective_element_EM(i, j);
8908       int effective_action = (j < 7 ? action :
8909                               i == Xdrip_stretch ? action :
8910                               i == Xdrip_stretchB ? action :
8911                               i == Ydrip_1_s ? action :
8912                               i == Ydrip_1_sB ? action :
8913                               i == Yball_1 ? action :
8914                               i == Xball_2 ? action :
8915                               i == Yball_2 ? action :
8916                               i == Yball_blank ? action :
8917                               i == Ykey_1_blank ? action :
8918                               i == Ykey_2_blank ? action :
8919                               i == Ykey_3_blank ? action :
8920                               i == Ykey_4_blank ? action :
8921                               i == Ykey_5_blank ? action :
8922                               i == Ykey_6_blank ? action :
8923                               i == Ykey_7_blank ? action :
8924                               i == Ykey_8_blank ? action :
8925                               i == Ylenses_blank ? action :
8926                               i == Ymagnify_blank ? action :
8927                               i == Ygrass_blank ? action :
8928                               i == Ydirt_blank ? action :
8929                               i == Xsand_stonein_1 ? action :
8930                               i == Xsand_stonein_2 ? action :
8931                               i == Xsand_stonein_3 ? action :
8932                               i == Xsand_stonein_4 ? action :
8933                               i == Xsand_stoneout_1 ? action :
8934                               i == Xsand_stoneout_2 ? action :
8935                               i == Xboom_android ? ACTION_EXPLODING :
8936                               action_exploding ? ACTION_EXPLODING :
8937                               action_active ? action :
8938                               action_other ? action :
8939                               ACTION_DEFAULT);
8940       int graphic = (el_act_dir2img(effective_element, effective_action,
8941                                     direction));
8942       int crumbled = (el_act_dir2crm(effective_element, effective_action,
8943                                      direction));
8944       int base_graphic = el_act2img(effective_element, ACTION_DEFAULT);
8945       int base_crumbled = el_act2crm(effective_element, ACTION_DEFAULT);
8946       boolean has_action_graphics = (graphic != base_graphic);
8947       boolean has_crumbled_graphics = (base_crumbled != base_graphic);
8948       struct GraphicInfo *g = &graphic_info[graphic];
8949       struct GraphicInfo_EM *g_em = &graphic_info_em_object[i][j];
8950       Bitmap *src_bitmap;
8951       int src_x, src_y;
8952       // ensure to get symmetric 3-frame, 2-delay animations as used in EM
8953       boolean special_animation = (action != ACTION_DEFAULT &&
8954                                    g->anim_frames == 3 &&
8955                                    g->anim_delay == 2 &&
8956                                    g->anim_mode & ANIM_LINEAR);
8957       int sync_frame = (i == Xdrip_stretch ? 7 :
8958                         i == Xdrip_stretchB ? 7 :
8959                         i == Ydrip_2_s ? j + 8 :
8960                         i == Ydrip_2_sB ? j + 8 :
8961                         i == Xacid_1 ? 0 :
8962                         i == Xacid_2 ? 10 :
8963                         i == Xacid_3 ? 20 :
8964                         i == Xacid_4 ? 30 :
8965                         i == Xacid_5 ? 40 :
8966                         i == Xacid_6 ? 50 :
8967                         i == Xacid_7 ? 60 :
8968                         i == Xacid_8 ? 70 :
8969                         i == Xfake_acid_1 ? 0 :
8970                         i == Xfake_acid_2 ? 10 :
8971                         i == Xfake_acid_3 ? 20 :
8972                         i == Xfake_acid_4 ? 30 :
8973                         i == Xfake_acid_5 ? 40 :
8974                         i == Xfake_acid_6 ? 50 :
8975                         i == Xfake_acid_7 ? 60 :
8976                         i == Xfake_acid_8 ? 70 :
8977                         i == Xfake_acid_1_player ? 0 :
8978                         i == Xfake_acid_2_player ? 10 :
8979                         i == Xfake_acid_3_player ? 20 :
8980                         i == Xfake_acid_4_player ? 30 :
8981                         i == Xfake_acid_5_player ? 40 :
8982                         i == Xfake_acid_6_player ? 50 :
8983                         i == Xfake_acid_7_player ? 60 :
8984                         i == Xfake_acid_8_player ? 70 :
8985                         i == Xball_2 ? 7 :
8986                         i == Yball_2 ? j + 8 :
8987                         i == Yball_blank ? j + 1 :
8988                         i == Ykey_1_blank ? j + 1 :
8989                         i == Ykey_2_blank ? j + 1 :
8990                         i == Ykey_3_blank ? j + 1 :
8991                         i == Ykey_4_blank ? j + 1 :
8992                         i == Ykey_5_blank ? j + 1 :
8993                         i == Ykey_6_blank ? j + 1 :
8994                         i == Ykey_7_blank ? j + 1 :
8995                         i == Ykey_8_blank ? j + 1 :
8996                         i == Ylenses_blank ? j + 1 :
8997                         i == Ymagnify_blank ? j + 1 :
8998                         i == Ygrass_blank ? j + 1 :
8999                         i == Ydirt_blank ? j + 1 :
9000                         i == Xamoeba_1 ? 0 :
9001                         i == Xamoeba_2 ? 1 :
9002                         i == Xamoeba_3 ? 2 :
9003                         i == Xamoeba_4 ? 3 :
9004                         i == Xamoeba_5 ? 0 :
9005                         i == Xamoeba_6 ? 1 :
9006                         i == Xamoeba_7 ? 2 :
9007                         i == Xamoeba_8 ? 3 :
9008                         i == Xexit_2 ? j + 8 :
9009                         i == Xexit_3 ? j + 16 :
9010                         i == Xdynamite_1 ? 0 :
9011                         i == Xdynamite_2 ? 8 :
9012                         i == Xdynamite_3 ? 16 :
9013                         i == Xdynamite_4 ? 24 :
9014                         i == Xsand_stonein_1 ? j + 1 :
9015                         i == Xsand_stonein_2 ? j + 9 :
9016                         i == Xsand_stonein_3 ? j + 17 :
9017                         i == Xsand_stonein_4 ? j + 25 :
9018                         i == Xsand_stoneout_1 && j == 0 ? 0 :
9019                         i == Xsand_stoneout_1 && j == 1 ? 0 :
9020                         i == Xsand_stoneout_1 && j == 2 ? 1 :
9021                         i == Xsand_stoneout_1 && j == 3 ? 2 :
9022                         i == Xsand_stoneout_1 && j == 4 ? 2 :
9023                         i == Xsand_stoneout_1 && j == 5 ? 3 :
9024                         i == Xsand_stoneout_1 && j == 6 ? 4 :
9025                         i == Xsand_stoneout_1 && j == 7 ? 4 :
9026                         i == Xsand_stoneout_2 && j == 0 ? 5 :
9027                         i == Xsand_stoneout_2 && j == 1 ? 6 :
9028                         i == Xsand_stoneout_2 && j == 2 ? 7 :
9029                         i == Xsand_stoneout_2 && j == 3 ? 8 :
9030                         i == Xsand_stoneout_2 && j == 4 ? 9 :
9031                         i == Xsand_stoneout_2 && j == 5 ? 11 :
9032                         i == Xsand_stoneout_2 && j == 6 ? 13 :
9033                         i == Xsand_stoneout_2 && j == 7 ? 15 :
9034                         i == Xboom_bug && j == 1 ? 2 :
9035                         i == Xboom_bug && j == 2 ? 2 :
9036                         i == Xboom_bug && j == 3 ? 4 :
9037                         i == Xboom_bug && j == 4 ? 4 :
9038                         i == Xboom_bug && j == 5 ? 2 :
9039                         i == Xboom_bug && j == 6 ? 2 :
9040                         i == Xboom_bug && j == 7 ? 0 :
9041                         i == Xboom_tank && j == 1 ? 2 :
9042                         i == Xboom_tank && j == 2 ? 2 :
9043                         i == Xboom_tank && j == 3 ? 4 :
9044                         i == Xboom_tank && j == 4 ? 4 :
9045                         i == Xboom_tank && j == 5 ? 2 :
9046                         i == Xboom_tank && j == 6 ? 2 :
9047                         i == Xboom_tank && j == 7 ? 0 :
9048                         i == Xboom_android && j == 7 ? 6 :
9049                         i == Xboom_1 && j == 1 ? 2 :
9050                         i == Xboom_1 && j == 2 ? 2 :
9051                         i == Xboom_1 && j == 3 ? 4 :
9052                         i == Xboom_1 && j == 4 ? 4 :
9053                         i == Xboom_1 && j == 5 ? 6 :
9054                         i == Xboom_1 && j == 6 ? 6 :
9055                         i == Xboom_1 && j == 7 ? 8 :
9056                         i == Xboom_2 && j == 0 ? 8 :
9057                         i == Xboom_2 && j == 1 ? 8 :
9058                         i == Xboom_2 && j == 2 ? 10 :
9059                         i == Xboom_2 && j == 3 ? 10 :
9060                         i == Xboom_2 && j == 4 ? 10 :
9061                         i == Xboom_2 && j == 5 ? 12 :
9062                         i == Xboom_2 && j == 6 ? 12 :
9063                         i == Xboom_2 && j == 7 ? 12 :
9064                         special_animation && j == 4 ? 3 :
9065                         effective_action != action ? 0 :
9066                         j);
9067       int frame = getAnimationFrame(g->anim_frames,
9068                                     g->anim_delay,
9069                                     g->anim_mode,
9070                                     g->anim_start_frame,
9071                                     sync_frame);
9072
9073       getGraphicSourceExt(graphic, frame, &src_bitmap, &src_x, &src_y,
9074                           g->double_movement && is_backside);
9075
9076       g_em->bitmap = src_bitmap;
9077       g_em->src_x = src_x;
9078       g_em->src_y = src_y;
9079       g_em->src_offset_x = 0;
9080       g_em->src_offset_y = 0;
9081       g_em->dst_offset_x = 0;
9082       g_em->dst_offset_y = 0;
9083       g_em->width  = TILEX;
9084       g_em->height = TILEY;
9085
9086       g_em->preserve_background = FALSE;
9087
9088       set_crumbled_graphics_EM(g_em, has_crumbled_graphics, crumbled,
9089                                sync_frame);
9090
9091       if ((!g->double_movement && (effective_action == ACTION_FALLING ||
9092                                    effective_action == ACTION_MOVING  ||
9093                                    effective_action == ACTION_PUSHING ||
9094                                    effective_action == ACTION_EATING)) ||
9095           (!has_action_graphics && (effective_action == ACTION_FILLING ||
9096                                     effective_action == ACTION_EMPTYING)))
9097       {
9098         int move_dir =
9099           (effective_action == ACTION_FALLING ||
9100            effective_action == ACTION_FILLING ||
9101            effective_action == ACTION_EMPTYING ? MV_DOWN : direction);
9102         int dx = (move_dir == MV_LEFT ? -1 : move_dir == MV_RIGHT ? 1 : 0);
9103         int dy = (move_dir == MV_UP   ? -1 : move_dir == MV_DOWN  ? 1 : 0);
9104         int num_steps = (i == Ydrip_1_s  ? 16 :
9105                          i == Ydrip_1_sB ? 16 :
9106                          i == Ydrip_2_s  ? 16 :
9107                          i == Ydrip_2_sB ? 16 :
9108                          i == Xsand_stonein_1 ? 32 :
9109                          i == Xsand_stonein_2 ? 32 :
9110                          i == Xsand_stonein_3 ? 32 :
9111                          i == Xsand_stonein_4 ? 32 :
9112                          i == Xsand_stoneout_1 ? 16 :
9113                          i == Xsand_stoneout_2 ? 16 : 8);
9114         int cx = ABS(dx) * (TILEX / num_steps);
9115         int cy = ABS(dy) * (TILEY / num_steps);
9116         int step_frame = (i == Ydrip_2_s        ? j + 8 :
9117                           i == Ydrip_2_sB       ? j + 8 :
9118                           i == Xsand_stonein_2  ? j + 8 :
9119                           i == Xsand_stonein_3  ? j + 16 :
9120                           i == Xsand_stonein_4  ? j + 24 :
9121                           i == Xsand_stoneout_2 ? j + 8 : j) + 1;
9122         int step = (is_backside ? step_frame : num_steps - step_frame);
9123
9124         if (is_backside)        // tile where movement starts
9125         {
9126           if (dx < 0 || dy < 0)
9127           {
9128             g_em->src_offset_x = cx * step;
9129             g_em->src_offset_y = cy * step;
9130           }
9131           else
9132           {
9133             g_em->dst_offset_x = cx * step;
9134             g_em->dst_offset_y = cy * step;
9135           }
9136         }
9137         else                    // tile where movement ends
9138         {
9139           if (dx < 0 || dy < 0)
9140           {
9141             g_em->dst_offset_x = cx * step;
9142             g_em->dst_offset_y = cy * step;
9143           }
9144           else
9145           {
9146             g_em->src_offset_x = cx * step;
9147             g_em->src_offset_y = cy * step;
9148           }
9149         }
9150
9151         g_em->width  = TILEX - cx * step;
9152         g_em->height = TILEY - cy * step;
9153       }
9154
9155       // create unique graphic identifier to decide if tile must be redrawn
9156       /* bit 31 - 16 (16 bit): EM style graphic
9157          bit 15 - 12 ( 4 bit): EM style frame
9158          bit 11 -  6 ( 6 bit): graphic width
9159          bit  5 -  0 ( 6 bit): graphic height */
9160       g_em->unique_identifier =
9161         (graphic << 16) | (frame << 12) | (g_em->width << 6) | g_em->height;
9162     }
9163   }
9164
9165   for (i = 0; i < GAME_TILE_MAX; i++)
9166   {
9167     for (j = 0; j < 8; j++)
9168     {
9169       int element = object_mapping[i].element_rnd;
9170       int action = object_mapping[i].action;
9171       int direction = object_mapping[i].direction;
9172       boolean is_backside = object_mapping[i].is_backside;
9173       int graphic_action  = el_act_dir2img(element, action, direction);
9174       int graphic_default = el_act_dir2img(element, ACTION_DEFAULT, direction);
9175
9176       if ((action == ACTION_SMASHED_BY_ROCK ||
9177            action == ACTION_SMASHED_BY_SPRING ||
9178            action == ACTION_EATING) &&
9179           graphic_action == graphic_default)
9180       {
9181         int e = (action == ACTION_SMASHED_BY_ROCK   ? Ystone_s  :
9182                  action == ACTION_SMASHED_BY_SPRING ? Yspring_s :
9183                  direction == MV_LEFT  ? (is_backside? Yspring_wB: Yspring_w) :
9184                  direction == MV_RIGHT ? (is_backside? Yspring_eB: Yspring_e) :
9185                  Xspring);
9186
9187         // no separate animation for "smashed by rock" -- use rock instead
9188         struct GraphicInfo_EM *g_em = &graphic_info_em_object[i][j];
9189         struct GraphicInfo_EM *g_xx = &graphic_info_em_object[e][j];
9190
9191         g_em->bitmap            = g_xx->bitmap;
9192         g_em->src_x             = g_xx->src_x;
9193         g_em->src_y             = g_xx->src_y;
9194         g_em->src_offset_x      = g_xx->src_offset_x;
9195         g_em->src_offset_y      = g_xx->src_offset_y;
9196         g_em->dst_offset_x      = g_xx->dst_offset_x;
9197         g_em->dst_offset_y      = g_xx->dst_offset_y;
9198         g_em->width             = g_xx->width;
9199         g_em->height            = g_xx->height;
9200         g_em->unique_identifier = g_xx->unique_identifier;
9201
9202         if (!is_backside)
9203           g_em->preserve_background = TRUE;
9204       }
9205     }
9206   }
9207
9208   for (p = 0; p < MAX_PLAYERS; p++)
9209   {
9210     for (i = 0; i < PLY_MAX; i++)
9211     {
9212       int element = player_mapping[p][i].element_rnd;
9213       int action = player_mapping[p][i].action;
9214       int direction = player_mapping[p][i].direction;
9215
9216       for (j = 0; j < 8; j++)
9217       {
9218         int effective_element = element;
9219         int effective_action = action;
9220         int graphic = (direction == MV_NONE ?
9221                        el_act2img(effective_element, effective_action) :
9222                        el_act_dir2img(effective_element, effective_action,
9223                                       direction));
9224         struct GraphicInfo *g = &graphic_info[graphic];
9225         struct GraphicInfo_EM *g_em = &graphic_info_em_player[p][i][j];
9226         Bitmap *src_bitmap;
9227         int src_x, src_y;
9228         int sync_frame = j;
9229         int frame = getAnimationFrame(g->anim_frames,
9230                                       g->anim_delay,
9231                                       g->anim_mode,
9232                                       g->anim_start_frame,
9233                                       sync_frame);
9234
9235         getGraphicSourceExt(graphic, frame, &src_bitmap, &src_x, &src_y, FALSE);
9236
9237         g_em->bitmap = src_bitmap;
9238         g_em->src_x = src_x;
9239         g_em->src_y = src_y;
9240         g_em->src_offset_x = 0;
9241         g_em->src_offset_y = 0;
9242         g_em->dst_offset_x = 0;
9243         g_em->dst_offset_y = 0;
9244         g_em->width  = TILEX;
9245         g_em->height = TILEY;
9246       }
9247     }
9248   }
9249 }
9250
9251 static void CheckSaveEngineSnapshot_EM(int frame,
9252                                        boolean any_player_moving,
9253                                        boolean any_player_snapping,
9254                                        boolean any_player_dropping)
9255 {
9256   if (frame == 7 && !any_player_dropping)
9257   {
9258     if (!local_player->was_waiting)
9259     {
9260       if (!CheckSaveEngineSnapshotToList())
9261         return;
9262
9263       local_player->was_waiting = TRUE;
9264     }
9265   }
9266   else if (any_player_moving || any_player_snapping || any_player_dropping)
9267   {
9268     local_player->was_waiting = FALSE;
9269   }
9270 }
9271
9272 static void CheckSaveEngineSnapshot_SP(boolean murphy_is_waiting,
9273                                        boolean murphy_is_dropping)
9274 {
9275   if (murphy_is_waiting)
9276   {
9277     if (!local_player->was_waiting)
9278     {
9279       if (!CheckSaveEngineSnapshotToList())
9280         return;
9281
9282       local_player->was_waiting = TRUE;
9283     }
9284   }
9285   else
9286   {
9287     local_player->was_waiting = FALSE;
9288   }
9289 }
9290
9291 static void CheckSaveEngineSnapshot_MM(boolean element_clicked,
9292                                        boolean button_released)
9293 {
9294   if (button_released)
9295   {
9296     if (game.snapshot.mode == SNAPSHOT_MODE_EVERY_MOVE)
9297       CheckSaveEngineSnapshotToList();
9298   }
9299   else if (element_clicked)
9300   {
9301     if (game.snapshot.mode != SNAPSHOT_MODE_EVERY_MOVE)
9302       CheckSaveEngineSnapshotToList();
9303
9304     game.snapshot.changed_action = TRUE;
9305   }
9306 }
9307
9308 boolean CheckSingleStepMode_EM(int frame,
9309                                boolean any_player_moving,
9310                                boolean any_player_snapping,
9311                                boolean any_player_dropping)
9312 {
9313   if (tape.single_step && tape.recording && !tape.pausing)
9314     if (frame == 7 && !any_player_dropping && FrameCounter > 6)
9315       TapeTogglePause(TAPE_TOGGLE_AUTOMATIC);
9316
9317   CheckSaveEngineSnapshot_EM(frame, any_player_moving,
9318                              any_player_snapping, any_player_dropping);
9319
9320   return tape.pausing;
9321 }
9322
9323 void CheckSingleStepMode_SP(boolean murphy_is_waiting,
9324                             boolean murphy_is_dropping)
9325 {
9326   boolean murphy_starts_dropping = FALSE;
9327   int i;
9328
9329   for (i = 0; i < MAX_PLAYERS; i++)
9330     if (stored_player[i].force_dropping)
9331       murphy_starts_dropping = TRUE;
9332
9333   if (tape.single_step && tape.recording && !tape.pausing)
9334     if (murphy_is_waiting && !murphy_starts_dropping)
9335       TapeTogglePause(TAPE_TOGGLE_AUTOMATIC);
9336
9337   CheckSaveEngineSnapshot_SP(murphy_is_waiting, murphy_is_dropping);
9338 }
9339
9340 void CheckSingleStepMode_MM(boolean element_clicked,
9341                             boolean button_released)
9342 {
9343   if (tape.single_step && tape.recording && !tape.pausing)
9344     if (button_released)
9345       TapeTogglePause(TAPE_TOGGLE_AUTOMATIC);
9346
9347   CheckSaveEngineSnapshot_MM(element_clicked, button_released);
9348 }
9349
9350 void getGraphicSource_SP(struct GraphicInfo_SP *g_sp,
9351                          int graphic, int sync_frame)
9352 {
9353   int frame = getGraphicAnimationFrame(graphic, sync_frame);
9354
9355   getGraphicSource(graphic, frame, &g_sp->bitmap, &g_sp->src_x, &g_sp->src_y);
9356 }
9357
9358 boolean isNextAnimationFrame_SP(int graphic, int sync_frame)
9359 {
9360   return (IS_NEXT_FRAME(sync_frame, graphic));
9361 }
9362
9363 int getGraphicInfo_Delay(int graphic)
9364 {
9365   return graphic_info[graphic].anim_delay;
9366 }
9367
9368 boolean getGraphicInfo_NewFrame(int x, int y, int graphic)
9369 {
9370   if (!IS_NEW_FRAME(GfxFrame[x][y], graphic))
9371     return FALSE;
9372
9373   if (ANIM_MODE(graphic) & (ANIM_TILED | ANIM_RANDOM_STATIC))
9374     return FALSE;
9375
9376   return TRUE;
9377 }
9378
9379 void PlayMenuSoundExt(int sound)
9380 {
9381   if (sound == SND_UNDEFINED)
9382     return;
9383
9384   if ((!setup.sound_simple && !IS_LOOP_SOUND(sound)) ||
9385       (!setup.sound_loops && IS_LOOP_SOUND(sound)))
9386     return;
9387
9388   if (IS_LOOP_SOUND(sound))
9389     PlaySoundLoop(sound);
9390   else
9391     PlaySound(sound);
9392 }
9393
9394 void PlayMenuSound(void)
9395 {
9396   PlayMenuSoundExt(menu.sound[game_status]);
9397 }
9398
9399 void PlayMenuSoundStereo(int sound, int stereo_position)
9400 {
9401   if (sound == SND_UNDEFINED)
9402     return;
9403
9404   if ((!setup.sound_simple && !IS_LOOP_SOUND(sound)) ||
9405       (!setup.sound_loops && IS_LOOP_SOUND(sound)))
9406     return;
9407
9408   if (IS_LOOP_SOUND(sound))
9409     PlaySoundExt(sound, SOUND_MAX_VOLUME, stereo_position, SND_CTRL_PLAY_LOOP);
9410   else
9411     PlaySoundStereo(sound, stereo_position);
9412 }
9413
9414 void PlayMenuSoundIfLoopExt(int sound)
9415 {
9416   if (sound == SND_UNDEFINED)
9417     return;
9418
9419   if ((!setup.sound_simple && !IS_LOOP_SOUND(sound)) ||
9420       (!setup.sound_loops && IS_LOOP_SOUND(sound)))
9421     return;
9422
9423   if (IS_LOOP_SOUND(sound))
9424     PlaySoundLoop(sound);
9425 }
9426
9427 void PlayMenuSoundIfLoop(void)
9428 {
9429   PlayMenuSoundIfLoopExt(menu.sound[game_status]);
9430 }
9431
9432 void PlayMenuMusicExt(int music)
9433 {
9434   if (music == MUS_UNDEFINED)
9435     return;
9436
9437   if (!setup.sound_music)
9438     return;
9439
9440   if (IS_LOOP_MUSIC(music))
9441     PlayMusicLoop(music);
9442   else
9443     PlayMusic(music);
9444 }
9445
9446 void PlayMenuMusic(void)
9447 {
9448   char *curr_music = getCurrentlyPlayingMusicFilename();
9449   char *next_music = getMusicInfoEntryFilename(menu.music[game_status]);
9450
9451   if (!strEqual(curr_music, next_music))
9452     PlayMenuMusicExt(menu.music[game_status]);
9453 }
9454
9455 void PlayMenuSoundsAndMusic(void)
9456 {
9457   PlayMenuSound();
9458   PlayMenuMusic();
9459 }
9460
9461 static void FadeMenuSounds(void)
9462 {
9463   FadeSounds();
9464 }
9465
9466 static void FadeMenuMusic(void)
9467 {
9468   char *curr_music = getCurrentlyPlayingMusicFilename();
9469   char *next_music = getMusicInfoEntryFilename(menu.music[game_status]);
9470
9471   if (!strEqual(curr_music, next_music))
9472     FadeMusic();
9473 }
9474
9475 void FadeMenuSoundsAndMusic(void)
9476 {
9477   FadeMenuSounds();
9478   FadeMenuMusic();
9479 }
9480
9481 void PlaySoundActivating(void)
9482 {
9483 #if 0
9484   PlaySound(SND_MENU_ITEM_ACTIVATING);
9485 #endif
9486 }
9487
9488 void PlaySoundSelecting(void)
9489 {
9490 #if 0
9491   PlaySound(SND_MENU_ITEM_SELECTING);
9492 #endif
9493 }
9494
9495 void ToggleFullscreenIfNeeded(void)
9496 {
9497   // if setup and video fullscreen state are already matching, nothing do do
9498   if (setup.fullscreen == video.fullscreen_enabled ||
9499       !video.fullscreen_available)
9500     return;
9501
9502   SDLSetWindowFullscreen(setup.fullscreen);
9503
9504   // set setup value according to successfully changed fullscreen mode
9505   setup.fullscreen = video.fullscreen_enabled;
9506 }
9507
9508 void ChangeWindowScalingIfNeeded(void)
9509 {
9510   // if setup and video window scaling are already matching, nothing do do
9511   if (setup.window_scaling_percent == video.window_scaling_percent ||
9512       video.fullscreen_enabled)
9513     return;
9514
9515   SDLSetWindowScaling(setup.window_scaling_percent);
9516
9517   // set setup value according to successfully changed window scaling
9518   setup.window_scaling_percent = video.window_scaling_percent;
9519 }
9520
9521 void ChangeVsyncModeIfNeeded(void)
9522 {
9523   int setup_vsync_mode = VSYNC_MODE_STR_TO_INT(setup.vsync_mode);
9524   int video_vsync_mode = video.vsync_mode;
9525
9526   // if setup and video vsync mode are already matching, nothing do do
9527   if (setup_vsync_mode == video_vsync_mode)
9528     return;
9529
9530   // if renderer is using OpenGL, vsync mode can directly be changed
9531   SDLSetScreenVsyncMode(setup.vsync_mode);
9532
9533   // if vsync mode unchanged, try re-creating renderer to set vsync mode
9534   if (video.vsync_mode == video_vsync_mode)
9535   {
9536     Bitmap *tmp_backbuffer = CreateBitmap(WIN_XSIZE, WIN_YSIZE, DEFAULT_DEPTH);
9537
9538     // save backbuffer content which gets lost when re-creating screen
9539     BlitBitmap(backbuffer, tmp_backbuffer, 0, 0, WIN_XSIZE, WIN_YSIZE, 0, 0);
9540
9541     // force re-creating screen and renderer to set new vsync mode
9542     video.fullscreen_enabled = !setup.fullscreen;
9543
9544     // when creating new renderer, destroy textures linked to old renderer
9545     FreeAllImageTextures();     // needs old renderer to free the textures
9546
9547     // re-create screen and renderer (including change of vsync mode)
9548     ChangeVideoModeIfNeeded(setup.fullscreen);
9549
9550     // set setup value according to successfully changed fullscreen mode
9551     setup.fullscreen = video.fullscreen_enabled;
9552
9553     // restore backbuffer content from temporary backbuffer backup bitmap
9554     BlitBitmap(tmp_backbuffer, backbuffer, 0, 0, WIN_XSIZE, WIN_YSIZE, 0, 0);
9555     FreeBitmap(tmp_backbuffer);
9556
9557     // update visible window/screen
9558     BlitBitmap(backbuffer, window, 0, 0, WIN_XSIZE, WIN_YSIZE, 0, 0);
9559
9560     // when changing vsync mode, re-create textures for new renderer
9561     InitImageTextures();
9562   }
9563
9564   // set setup value according to successfully changed vsync mode
9565   setup.vsync_mode = VSYNC_MODE_INT_TO_STR(video.vsync_mode);
9566 }
9567
9568 static void JoinRectangles(int *x, int *y, int *width, int *height,
9569                            int x2, int y2, int width2, int height2)
9570 {
9571   // do not join with "off-screen" rectangle
9572   if (x2 == -1 || y2 == -1)
9573     return;
9574
9575   *x = MIN(*x, x2);
9576   *y = MIN(*y, y2);
9577   *width = MAX(*width, width2);
9578   *height = MAX(*height, height2);
9579 }
9580
9581 void SetAnimStatus(int anim_status_new)
9582 {
9583   if (anim_status_new == GAME_MODE_MAIN)
9584     anim_status_new = GAME_MODE_PSEUDO_MAINONLY;
9585   else if (anim_status_new == GAME_MODE_NAMES)
9586     anim_status_new = GAME_MODE_PSEUDO_NAMESONLY;
9587   else if (anim_status_new == GAME_MODE_SCORES)
9588     anim_status_new = GAME_MODE_PSEUDO_SCORESOLD;
9589
9590   global.anim_status_next = anim_status_new;
9591
9592   // directly set screen modes that are entered without fading
9593   if ((global.anim_status      == GAME_MODE_PSEUDO_MAINONLY &&
9594        global.anim_status_next == GAME_MODE_PSEUDO_TYPENAME) ||
9595       (global.anim_status      == GAME_MODE_PSEUDO_TYPENAME &&
9596        global.anim_status_next == GAME_MODE_PSEUDO_MAINONLY) ||
9597       (global.anim_status      == GAME_MODE_PSEUDO_NAMESONLY &&
9598        global.anim_status_next == GAME_MODE_PSEUDO_TYPENAMES) ||
9599       (global.anim_status      == GAME_MODE_PSEUDO_TYPENAMES &&
9600        global.anim_status_next == GAME_MODE_PSEUDO_NAMESONLY))
9601     global.anim_status = global.anim_status_next;
9602 }
9603
9604 void SetGameStatus(int game_status_new)
9605 {
9606   if (game_status_new != game_status)
9607     game_status_last_screen = game_status;
9608
9609   game_status = game_status_new;
9610
9611   SetAnimStatus(game_status_new);
9612 }
9613
9614 void SetFontStatus(int game_status_new)
9615 {
9616   static int last_game_status = -1;
9617
9618   if (game_status_new != -1)
9619   {
9620     // set game status for font use after storing last game status
9621     last_game_status = game_status;
9622     game_status = game_status_new;
9623   }
9624   else
9625   {
9626     // reset game status after font use from last stored game status
9627     game_status = last_game_status;
9628   }
9629 }
9630
9631 void ResetFontStatus(void)
9632 {
9633   SetFontStatus(-1);
9634 }
9635
9636 void SetLevelSetInfo(char *identifier, int level_nr)
9637 {
9638   setString(&levelset.identifier, identifier);
9639
9640   levelset.level_nr = level_nr;
9641 }
9642
9643 boolean CheckIfAllViewportsHaveChanged(void)
9644 {
9645   // if game status has not changed, viewports have not changed either
9646   if (game_status == game_status_last)
9647     return FALSE;
9648
9649   // check if all viewports have changed with current game status
9650
9651   struct RectWithBorder *vp_playfield = &viewport.playfield[game_status];
9652   struct RectWithBorder *vp_door_1    = &viewport.door_1[game_status];
9653   struct RectWithBorder *vp_door_2    = &viewport.door_2[game_status];
9654   int new_real_sx       = vp_playfield->x;
9655   int new_real_sy       = vp_playfield->y;
9656   int new_full_sxsize   = vp_playfield->width;
9657   int new_full_sysize   = vp_playfield->height;
9658   int new_dx            = vp_door_1->x;
9659   int new_dy            = vp_door_1->y;
9660   int new_dxsize        = vp_door_1->width;
9661   int new_dysize        = vp_door_1->height;
9662   int new_vx            = vp_door_2->x;
9663   int new_vy            = vp_door_2->y;
9664   int new_vxsize        = vp_door_2->width;
9665   int new_vysize        = vp_door_2->height;
9666
9667   boolean playfield_viewport_has_changed =
9668     (new_real_sx != REAL_SX ||
9669      new_real_sy != REAL_SY ||
9670      new_full_sxsize != FULL_SXSIZE ||
9671      new_full_sysize != FULL_SYSIZE);
9672
9673   boolean door_1_viewport_has_changed =
9674     (new_dx != DX ||
9675      new_dy != DY ||
9676      new_dxsize != DXSIZE ||
9677      new_dysize != DYSIZE);
9678
9679   boolean door_2_viewport_has_changed =
9680     (new_vx != VX ||
9681      new_vy != VY ||
9682      new_vxsize != VXSIZE ||
9683      new_vysize != VYSIZE ||
9684      game_status_last == GAME_MODE_EDITOR);
9685
9686   return (playfield_viewport_has_changed &&
9687           door_1_viewport_has_changed &&
9688           door_2_viewport_has_changed);
9689 }
9690
9691 boolean CheckFadeAll(void)
9692 {
9693   return (CheckIfGlobalBorderHasChanged() ||
9694           CheckIfAllViewportsHaveChanged());
9695 }
9696
9697 void ChangeViewportPropertiesIfNeeded(void)
9698 {
9699   boolean use_mini_tilesize = (level.game_engine_type == GAME_ENGINE_TYPE_MM ?
9700                                FALSE : setup.small_game_graphics);
9701   int gfx_game_mode = getGlobalGameStatus(game_status);
9702   int gfx_game_mode2 = (gfx_game_mode == GAME_MODE_EDITOR ? GAME_MODE_DEFAULT :
9703                         gfx_game_mode);
9704   struct RectWithBorder *vp_window    = &viewport.window[gfx_game_mode];
9705   struct RectWithBorder *vp_playfield = &viewport.playfield[gfx_game_mode];
9706   struct RectWithBorder *vp_door_1    = &viewport.door_1[gfx_game_mode];
9707   struct RectWithBorder *vp_door_2    = &viewport.door_2[gfx_game_mode2];
9708   struct RectWithBorder *vp_door_3    = &viewport.door_2[GAME_MODE_EDITOR];
9709   int new_win_xsize     = vp_window->width;
9710   int new_win_ysize     = vp_window->height;
9711   int border_left       = vp_playfield->border_left;
9712   int border_right      = vp_playfield->border_right;
9713   int border_top        = vp_playfield->border_top;
9714   int border_bottom     = vp_playfield->border_bottom;
9715   int new_sx            = vp_playfield->x      + border_left;
9716   int new_sy            = vp_playfield->y      + border_top;
9717   int new_sxsize        = vp_playfield->width  - border_left - border_right;
9718   int new_sysize        = vp_playfield->height - border_top  - border_bottom;
9719   int new_real_sx       = vp_playfield->x;
9720   int new_real_sy       = vp_playfield->y;
9721   int new_full_sxsize   = vp_playfield->width;
9722   int new_full_sysize   = vp_playfield->height;
9723   int new_dx            = vp_door_1->x;
9724   int new_dy            = vp_door_1->y;
9725   int new_dxsize        = vp_door_1->width;
9726   int new_dysize        = vp_door_1->height;
9727   int new_vx            = vp_door_2->x;
9728   int new_vy            = vp_door_2->y;
9729   int new_vxsize        = vp_door_2->width;
9730   int new_vysize        = vp_door_2->height;
9731   int new_ex            = vp_door_3->x;
9732   int new_ey            = vp_door_3->y;
9733   int new_exsize        = vp_door_3->width;
9734   int new_eysize        = vp_door_3->height;
9735   int new_tilesize_var = (use_mini_tilesize ? MINI_TILESIZE : game.tile_size);
9736   int tilesize = (gfx_game_mode == GAME_MODE_PLAYING ? new_tilesize_var :
9737                   gfx_game_mode == GAME_MODE_EDITOR ? MINI_TILESIZE : TILESIZE);
9738   int new_scr_fieldx = new_sxsize / tilesize;
9739   int new_scr_fieldy = new_sysize / tilesize;
9740   int new_scr_fieldx_buffers = new_sxsize / new_tilesize_var;
9741   int new_scr_fieldy_buffers = new_sysize / new_tilesize_var;
9742   boolean init_gfx_buffers = FALSE;
9743   boolean init_video_buffer = FALSE;
9744   boolean init_gadgets_and_anims = FALSE;
9745   boolean init_em_graphics = FALSE;
9746
9747   if (new_win_xsize != WIN_XSIZE ||
9748       new_win_ysize != WIN_YSIZE)
9749   {
9750     WIN_XSIZE = new_win_xsize;
9751     WIN_YSIZE = new_win_ysize;
9752
9753     init_video_buffer = TRUE;
9754     init_gfx_buffers = TRUE;
9755     init_gadgets_and_anims = TRUE;
9756
9757     // Debug("tools:viewport", "video: init_video_buffer, init_gfx_buffers");
9758   }
9759
9760   if (new_scr_fieldx != SCR_FIELDX ||
9761       new_scr_fieldy != SCR_FIELDY)
9762   {
9763     // this always toggles between MAIN and GAME when using small tile size
9764
9765     SCR_FIELDX = new_scr_fieldx;
9766     SCR_FIELDY = new_scr_fieldy;
9767
9768     // Debug("tools:viewport", "new_scr_fieldx != SCR_FIELDX ...");
9769   }
9770
9771   if (new_sx != SX ||
9772       new_sy != SY ||
9773       new_dx != DX ||
9774       new_dy != DY ||
9775       new_vx != VX ||
9776       new_vy != VY ||
9777       new_ex != EX ||
9778       new_ey != EY ||
9779       new_sxsize != SXSIZE ||
9780       new_sysize != SYSIZE ||
9781       new_dxsize != DXSIZE ||
9782       new_dysize != DYSIZE ||
9783       new_vxsize != VXSIZE ||
9784       new_vysize != VYSIZE ||
9785       new_exsize != EXSIZE ||
9786       new_eysize != EYSIZE ||
9787       new_real_sx != REAL_SX ||
9788       new_real_sy != REAL_SY ||
9789       new_full_sxsize != FULL_SXSIZE ||
9790       new_full_sysize != FULL_SYSIZE ||
9791       new_tilesize_var != TILESIZE_VAR
9792       )
9793   {
9794     // ------------------------------------------------------------------------
9795     // determine next fading area for changed viewport definitions
9796     // ------------------------------------------------------------------------
9797
9798     // start with current playfield area (default fading area)
9799     FADE_SX = REAL_SX;
9800     FADE_SY = REAL_SY;
9801     FADE_SXSIZE = FULL_SXSIZE;
9802     FADE_SYSIZE = FULL_SYSIZE;
9803
9804     // add new playfield area if position or size has changed
9805     if (new_real_sx != REAL_SX || new_real_sy != REAL_SY ||
9806         new_full_sxsize != FULL_SXSIZE || new_full_sysize != FULL_SYSIZE)
9807     {
9808       JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
9809                      new_real_sx, new_real_sy, new_full_sxsize,new_full_sysize);
9810     }
9811
9812     // add current and new door 1 area if position or size has changed
9813     if (new_dx != DX || new_dy != DY ||
9814         new_dxsize != DXSIZE || new_dysize != DYSIZE)
9815     {
9816       JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
9817                      DX, DY, DXSIZE, DYSIZE);
9818       JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
9819                      new_dx, new_dy, new_dxsize, new_dysize);
9820     }
9821
9822     // add current and new door 2 area if position or size has changed
9823     if (new_vx != VX || new_vy != VY ||
9824         new_vxsize != VXSIZE || new_vysize != VYSIZE)
9825     {
9826       JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
9827                      VX, VY, VXSIZE, VYSIZE);
9828       JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
9829                      new_vx, new_vy, new_vxsize, new_vysize);
9830     }
9831
9832     // ------------------------------------------------------------------------
9833     // handle changed tile size
9834     // ------------------------------------------------------------------------
9835
9836     if (new_tilesize_var != TILESIZE_VAR)
9837     {
9838       // Debug("tools:viewport", "new_tilesize_var != TILESIZE_VAR");
9839
9840       // changing tile size invalidates scroll values of engine snapshots
9841       FreeEngineSnapshotSingle();
9842
9843       // changing tile size requires update of graphic mapping for EM engine
9844       init_em_graphics = TRUE;
9845     }
9846
9847     SX = new_sx;
9848     SY = new_sy;
9849     DX = new_dx;
9850     DY = new_dy;
9851     VX = new_vx;
9852     VY = new_vy;
9853     EX = new_ex;
9854     EY = new_ey;
9855     SXSIZE = new_sxsize;
9856     SYSIZE = new_sysize;
9857     DXSIZE = new_dxsize;
9858     DYSIZE = new_dysize;
9859     VXSIZE = new_vxsize;
9860     VYSIZE = new_vysize;
9861     EXSIZE = new_exsize;
9862     EYSIZE = new_eysize;
9863     REAL_SX = new_real_sx;
9864     REAL_SY = new_real_sy;
9865     FULL_SXSIZE = new_full_sxsize;
9866     FULL_SYSIZE = new_full_sysize;
9867     TILESIZE_VAR = new_tilesize_var;
9868
9869     init_gfx_buffers = TRUE;
9870     init_gadgets_and_anims = TRUE;
9871
9872     // Debug("tools:viewport", "viewports: init_gfx_buffers");
9873     // Debug("tools:viewport", "viewports: init_gadgets_and_anims");
9874   }
9875
9876   if (init_gfx_buffers)
9877   {
9878     // Debug("tools:viewport", "init_gfx_buffers");
9879
9880     SCR_FIELDX = new_scr_fieldx_buffers;
9881     SCR_FIELDY = new_scr_fieldy_buffers;
9882
9883     InitGfxBuffers();
9884
9885     SCR_FIELDX = new_scr_fieldx;
9886     SCR_FIELDY = new_scr_fieldy;
9887
9888     SetDrawDeactivationMask(REDRAW_NONE);
9889     SetDrawBackgroundMask(REDRAW_FIELD);
9890   }
9891
9892   if (init_video_buffer)
9893   {
9894     // Debug("tools:viewport", "init_video_buffer");
9895
9896     FreeAllImageTextures();     // needs old renderer to free the textures
9897
9898     InitVideoBuffer(WIN_XSIZE, WIN_YSIZE, DEFAULT_DEPTH, setup.fullscreen);
9899     InitImageTextures();
9900   }
9901
9902   if (init_gadgets_and_anims)
9903   {
9904     // Debug("tools:viewport", "init_gadgets_and_anims");
9905
9906     InitGadgets();
9907     InitGlobalAnimations();
9908   }
9909
9910   if (init_em_graphics)
9911   {
9912     InitGraphicInfo_EM();
9913   }
9914 }
9915
9916 void OpenURL(char *url)
9917 {
9918 #if SDL_VERSION_ATLEAST(2,0,14)
9919   SDL_OpenURL(url);
9920 #else
9921   Warn("SDL_OpenURL(\"%s\") not supported by SDL %d.%d.%d!",
9922        url, SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL);
9923   Warn("Please upgrade to at least SDL 2.0.14 for URL support!");
9924 #endif
9925 }
9926
9927 void OpenURLFromHash(SetupFileHash *hash, int hash_key)
9928 {
9929   OpenURL(getHashEntry(hash, int2str(hash_key, 0)));
9930 }
9931
9932
9933 // ============================================================================
9934 // tests
9935 // ============================================================================
9936
9937 #if defined(PLATFORM_WINDOWS)
9938 /* FILETIME of Jan 1 1970 00:00:00. */
9939 static const unsigned __int64 epoch = ((unsigned __int64) 116444736000000000ULL);
9940
9941 /*
9942  * timezone information is stored outside the kernel so tzp isn't used anymore.
9943  *
9944  * Note: this function is not for Win32 high precision timing purpose. See
9945  * elapsed_time().
9946  */
9947 static int gettimeofday_windows(struct timeval * tp, struct timezone * tzp)
9948 {
9949   FILETIME    file_time;
9950   SYSTEMTIME  system_time;
9951   ULARGE_INTEGER ularge;
9952
9953   GetSystemTime(&system_time);
9954   SystemTimeToFileTime(&system_time, &file_time);
9955   ularge.LowPart = file_time.dwLowDateTime;
9956   ularge.HighPart = file_time.dwHighDateTime;
9957
9958   tp->tv_sec = (long) ((ularge.QuadPart - epoch) / 10000000L);
9959   tp->tv_usec = (long) (system_time.wMilliseconds * 1000);
9960
9961   return 0;
9962 }
9963 #endif
9964
9965 static char *test_init_uuid_random_function_simple(void)
9966 {
9967   static char seed_text[100];
9968   unsigned int seed = InitSimpleRandom(NEW_RANDOMIZE);
9969
9970   sprintf(seed_text, "%d", seed);
9971
9972   return seed_text;
9973 }
9974
9975 static char *test_init_uuid_random_function_better(void)
9976 {
9977   static char seed_text[100];
9978   struct timeval current_time;
9979
9980   gettimeofday(&current_time, NULL);
9981
9982   prng_seed_bytes(&current_time, sizeof(current_time));
9983
9984   sprintf(seed_text, "%ld.%ld",
9985           (long)current_time.tv_sec,
9986           (long)current_time.tv_usec);
9987
9988   return seed_text;
9989 }
9990
9991 #if defined(PLATFORM_WINDOWS)
9992 static char *test_init_uuid_random_function_better_windows(void)
9993 {
9994   static char seed_text[100];
9995   struct timeval current_time;
9996
9997   gettimeofday_windows(&current_time, NULL);
9998
9999   prng_seed_bytes(&current_time, sizeof(current_time));
10000
10001   sprintf(seed_text, "%ld.%ld",
10002           (long)current_time.tv_sec,
10003           (long)current_time.tv_usec);
10004
10005   return seed_text;
10006 }
10007 #endif
10008
10009 static unsigned int test_uuid_random_function_simple(int max)
10010 {
10011   return GetSimpleRandom(max);
10012 }
10013
10014 static unsigned int test_uuid_random_function_better(int max)
10015 {
10016   return (max > 0 ? prng_get_uint() % max : 0);
10017 }
10018
10019 #if defined(PLATFORM_WINDOWS)
10020 #define NUM_UUID_TESTS                  3
10021 #else
10022 #define NUM_UUID_TESTS                  2
10023 #endif
10024
10025 static void TestGeneratingUUIDs_RunTest(int nr, int always_seed, int num_uuids)
10026 {
10027   struct hashtable *hash_seeds =
10028     create_hashtable(16, 0.75, get_hash_from_key, hash_keys_are_equal);
10029   struct hashtable *hash_uuids =
10030     create_hashtable(16, 0.75, get_hash_from_key, hash_keys_are_equal);
10031   static char message[100];
10032   int i;
10033
10034   char *random_name = (nr == 0 ? "simple" : "better");
10035   char *random_type = (always_seed ? "always" : "only once");
10036   char *(*init_random_function)(void) =
10037     (nr == 0 ?
10038      test_init_uuid_random_function_simple :
10039      test_init_uuid_random_function_better);
10040   unsigned int (*random_function)(int) =
10041     (nr == 0 ?
10042      test_uuid_random_function_simple :
10043      test_uuid_random_function_better);
10044   int xpos = 40;
10045
10046 #if defined(PLATFORM_WINDOWS)
10047   if (nr == 2)
10048   {
10049     random_name = "windows";
10050     init_random_function = test_init_uuid_random_function_better_windows;
10051   }
10052 #endif
10053
10054   ClearField();
10055
10056   DrawTextF(xpos, 40, FC_GREEN, "Test: Generating UUIDs");
10057   DrawTextF(xpos, 80, FC_YELLOW, "Test %d.%d:", nr + 1, always_seed + 1);
10058
10059   DrawTextF(xpos, 100, FC_YELLOW, "Random Generator Name: %s", random_name);
10060   DrawTextF(xpos, 120, FC_YELLOW, "Seeding Random Generator: %s", random_type);
10061   DrawTextF(xpos, 140, FC_YELLOW, "Number of UUIDs generated: %d", num_uuids);
10062
10063   DrawTextF(xpos, 180, FC_GREEN, "Please wait ...");
10064
10065   BackToFront();
10066
10067   // always initialize random number generator at least once
10068   init_random_function();
10069
10070   unsigned int time_start = SDL_GetTicks();
10071
10072   for (i = 0; i < num_uuids; i++)
10073   {
10074     if (always_seed)
10075     {
10076       char *seed = getStringCopy(init_random_function());
10077
10078       hashtable_remove(hash_seeds, seed);
10079       hashtable_insert(hash_seeds, seed, "1");
10080     }
10081
10082     char *uuid = getStringCopy(getUUIDExt(random_function));
10083
10084     hashtable_remove(hash_uuids, uuid);
10085     hashtable_insert(hash_uuids, uuid, "1");
10086   }
10087
10088   int num_unique_seeds = hashtable_count(hash_seeds);
10089   int num_unique_uuids = hashtable_count(hash_uuids);
10090
10091   unsigned int time_needed = SDL_GetTicks() - time_start;
10092
10093   DrawTextF(xpos, 220, FC_YELLOW, "Time needed: %d ms", time_needed);
10094
10095   DrawTextF(xpos, 240, FC_YELLOW, "Number of unique UUIDs: %d", num_unique_uuids);
10096
10097   if (always_seed)
10098     DrawTextF(xpos, 260, FC_YELLOW, "Number of unique seeds: %d", num_unique_seeds);
10099
10100   if (nr == NUM_UUID_TESTS - 1 && always_seed)
10101     DrawTextF(xpos, 300, FC_GREEN, "All tests done!");
10102   else
10103     DrawTextF(xpos, 300, FC_GREEN, "Confirm dialog for next test ...");
10104
10105   sprintf(message, "Test %d.%d finished!", nr + 1, always_seed + 1);
10106
10107   Request(message, REQ_CONFIRM);
10108
10109   hashtable_destroy(hash_seeds, 0);
10110   hashtable_destroy(hash_uuids, 0);
10111 }
10112
10113 void TestGeneratingUUIDs(void)
10114 {
10115   int num_uuids = 1000000;
10116   int i, j;
10117
10118   for (i = 0; i < NUM_UUID_TESTS; i++)
10119     for (j = 0; j < 2; j++)
10120       TestGeneratingUUIDs_RunTest(i, j, num_uuids);
10121
10122   CloseAllAndExit(0);
10123 }