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   boolean game_ended = (game_status == GAME_MODE_PLAYING && checkGameEnded());
4797
4798   // when showing request dialog after game ended, deactivate game panel
4799   if (game_ended)
4800     game.panel.active = FALSE;
4801
4802   if (game_status == GAME_MODE_PLAYING)
4803     BlitScreenToBitmap(backbuffer);
4804
4805   // disable deactivated drawing when quick-loading level tape recording
4806   if (tape.playing && tape.deactivate_display)
4807     TapeDeactivateDisplayOff(TRUE);
4808
4809   SetMouseCursor(CURSOR_DEFAULT);
4810
4811   // pause network game while waiting for request to answer
4812   if (network.enabled &&
4813       game_status == GAME_MODE_PLAYING &&
4814       !game.all_players_gone)
4815     SendToServer_PausePlaying();
4816
4817   // simulate releasing mouse button over last gadget, if still pressed
4818   if (button_status)
4819     HandleGadgets(-1, -1, 0);
4820
4821   UnmapAllGadgets();
4822 }
4823
4824 static void DoRequestAfter(void)
4825 {
4826   RemapAllGadgets();
4827
4828   if (game_status == GAME_MODE_PLAYING)
4829   {
4830     SetPanelBackground();
4831     SetDrawBackgroundMask(REDRAW_DOOR_1);
4832   }
4833   else
4834   {
4835     SetDrawBackgroundMask(REDRAW_FIELD);
4836   }
4837
4838   // continue network game after request
4839   if (network.enabled &&
4840       game_status == GAME_MODE_PLAYING &&
4841       !game.all_players_gone)
4842     SendToServer_ContinuePlaying();
4843
4844   // restore deactivated drawing when quick-loading level tape recording
4845   if (tape.playing && tape.deactivate_display)
4846     TapeDeactivateDisplayOn();
4847 }
4848
4849 static void DrawRequestDoorText(char *text)
4850 {
4851   char *text_ptr = text;
4852   int max_request_line_len = MAX_REQUEST_LINE_FONT1_LEN;
4853   int font_nr = FONT_TEXT_2;
4854   int ty;
4855
4856   // force DOOR font inside door area
4857   SetFontStatus(GAME_MODE_PSEUDO_DOOR);
4858
4859   if (maxWordLengthInRequestString(text) > MAX_REQUEST_LINE_FONT1_LEN)
4860   {
4861     max_request_line_len = MAX_REQUEST_LINE_FONT2_LEN;
4862     font_nr = FONT_TEXT_1;
4863   }
4864
4865   for (text_ptr = text, ty = 0; ty < MAX_REQUEST_LINES; ty++)
4866   {
4867     char text_line[max_request_line_len + 1];
4868     int tx, tl, tc = 0;
4869
4870     if (!*text_ptr)
4871       break;
4872
4873     for (tl = 0, tx = 0; tx < max_request_line_len; tl++, tx++)
4874     {
4875       tc = *(text_ptr + tx);
4876       if (!tc || tc == ' ' || tc == '?' || tc == '!')
4877         break;
4878     }
4879
4880     if ((tc == '?' || tc == '!') && tl == 0)
4881       tl = 1;
4882
4883     if (!tl)
4884     {
4885       text_ptr++;
4886       ty--;
4887       continue;
4888     }
4889
4890     strncpy(text_line, text_ptr, tl);
4891     text_line[tl] = 0;
4892
4893     DrawText(DX + (DXSIZE - tl * getFontWidth(font_nr)) / 2,
4894              DY + 8 + ty * (getFontHeight(font_nr) + 2),
4895              text_line, font_nr);
4896
4897     text_ptr += tl + (tc == ' ' ? 1 : 0);
4898   }
4899
4900   ResetFontStatus();
4901 }
4902
4903 static int RequestDoor(char *text, unsigned int req_state)
4904 {
4905   unsigned int old_door_state = GetDoorState();
4906   int draw_buffer_last = GetDrawtoField();
4907   int result;
4908
4909   if (old_door_state & DOOR_OPEN_1)
4910   {
4911     CloseDoor(DOOR_CLOSE_1);
4912
4913     // save old door content
4914     BlitBitmap(bitmap_db_door_1, bitmap_db_door_1,
4915                0, 0, DXSIZE, DYSIZE, DXSIZE, 0);
4916   }
4917
4918   SetDoorBackgroundImage(IMG_BACKGROUND_DOOR);
4919   SetDrawBackgroundMask(REDRAW_FIELD | REDRAW_DOOR_1);
4920
4921   // clear door drawing field
4922   DrawBackground(DX, DY, DXSIZE, DYSIZE);
4923
4924   // write text for request
4925   DrawRequestDoorText(text);
4926
4927   MapToolButtons(req_state);
4928
4929   // copy request gadgets to door backbuffer
4930   BlitBitmap(drawto, bitmap_db_door_1, DX, DY, DXSIZE, DYSIZE, 0, 0);
4931
4932   OpenDoor(DOOR_OPEN_1);
4933
4934   // ---------- handle request buttons ----------
4935   result = RequestHandleEvents(req_state, draw_buffer_last);
4936
4937   UnmapToolButtons();
4938
4939   if (!(req_state & REQ_STAY_OPEN))
4940   {
4941     CloseDoor(DOOR_CLOSE_1);
4942
4943     if (((old_door_state & DOOR_OPEN_1) && !(req_state & REQ_STAY_CLOSED)) ||
4944         (req_state & REQ_REOPEN))
4945       OpenDoor(DOOR_OPEN_1 | DOOR_COPY_BACK);
4946   }
4947
4948   return result;
4949 }
4950
4951 static int RequestEnvelope(char *text, unsigned int req_state)
4952 {
4953   int draw_buffer_last = GetDrawtoField();
4954   int result;
4955
4956   DrawEnvelopeRequest(text, req_state);
4957   ShowEnvelopeRequest(text, req_state, ACTION_OPENING);
4958
4959   // ---------- handle request buttons ----------
4960   result = RequestHandleEvents(req_state, draw_buffer_last);
4961
4962   UnmapToolButtons();
4963
4964   ShowEnvelopeRequest(text, req_state, ACTION_CLOSING);
4965
4966   return result;
4967 }
4968
4969 int Request(char *text, unsigned int req_state)
4970 {
4971   boolean overlay_enabled = GetOverlayEnabled();
4972   int result;
4973
4974   game.request_active = TRUE;
4975
4976   SetOverlayEnabled(FALSE);
4977
4978   DoRequestBefore();
4979
4980   if (global.use_envelope_request)
4981     result = RequestEnvelope(text, req_state);
4982   else
4983     result = RequestDoor(text, req_state);
4984
4985   DoRequestAfter();
4986
4987   SetOverlayEnabled(overlay_enabled);
4988
4989   game.request_active = FALSE;
4990
4991   return result;
4992 }
4993
4994 static int compareDoorPartOrderInfo(const void *object1, const void *object2)
4995 {
4996   const struct DoorPartOrderInfo *dpo1 = (struct DoorPartOrderInfo *)object1;
4997   const struct DoorPartOrderInfo *dpo2 = (struct DoorPartOrderInfo *)object2;
4998   int compare_result;
4999
5000   if (dpo1->sort_priority != dpo2->sort_priority)
5001     compare_result = dpo1->sort_priority - dpo2->sort_priority;
5002   else
5003     compare_result = dpo1->nr - dpo2->nr;
5004
5005   return compare_result;
5006 }
5007
5008 void InitGraphicCompatibilityInfo_Doors(void)
5009 {
5010   struct
5011   {
5012     int door_token;
5013     int part_1, part_8;
5014     struct DoorInfo *door;
5015   }
5016   doors[] =
5017   {
5018     { DOOR_1,   IMG_GFX_DOOR_1_PART_1,  IMG_GFX_DOOR_1_PART_8,  &door_1 },
5019     { DOOR_2,   IMG_GFX_DOOR_2_PART_1,  IMG_GFX_DOOR_2_PART_8,  &door_2 },
5020
5021     { -1,       -1,                     -1,                     NULL    }
5022   };
5023   struct Rect door_rect_list[] =
5024   {
5025     { DX, DY, DXSIZE, DYSIZE },
5026     { VX, VY, VXSIZE, VYSIZE }
5027   };
5028   int i, j;
5029
5030   for (i = 0; doors[i].door_token != -1; i++)
5031   {
5032     int door_token = doors[i].door_token;
5033     int door_index = DOOR_INDEX_FROM_TOKEN(door_token);
5034     int part_1 = doors[i].part_1;
5035     int part_8 = doors[i].part_8;
5036     int part_2 = part_1 + 1;
5037     int part_3 = part_1 + 2;
5038     struct DoorInfo *door = doors[i].door;
5039     struct Rect *door_rect = &door_rect_list[door_index];
5040     boolean door_gfx_redefined = FALSE;
5041
5042     // check if any door part graphic definitions have been redefined
5043
5044     for (j = 0; door_part_controls[j].door_token != -1; j++)
5045     {
5046       struct DoorPartControlInfo *dpc = &door_part_controls[j];
5047       struct FileInfo *fi = getImageListEntryFromImageID(dpc->graphic);
5048
5049       if (dpc->door_token == door_token && fi->redefined)
5050         door_gfx_redefined = TRUE;
5051     }
5052
5053     // check for old-style door graphic/animation modifications
5054
5055     if (!door_gfx_redefined)
5056     {
5057       if (door->anim_mode & ANIM_STATIC_PANEL)
5058       {
5059         door->panel.step_xoffset = 0;
5060         door->panel.step_yoffset = 0;
5061       }
5062
5063       if (door->anim_mode & (ANIM_HORIZONTAL | ANIM_VERTICAL))
5064       {
5065         struct GraphicInfo *g_part_1 = &graphic_info[part_1];
5066         struct GraphicInfo *g_part_2 = &graphic_info[part_2];
5067         int num_door_steps, num_panel_steps;
5068
5069         // remove door part graphics other than the two default wings
5070
5071         for (j = 0; door_part_controls[j].door_token != -1; j++)
5072         {
5073           struct DoorPartControlInfo *dpc = &door_part_controls[j];
5074           struct GraphicInfo *g = &graphic_info[dpc->graphic];
5075
5076           if (dpc->graphic >= part_3 &&
5077               dpc->graphic <= part_8)
5078             g->bitmap = NULL;
5079         }
5080
5081         // set graphics and screen positions of the default wings
5082
5083         g_part_1->width  = door_rect->width;
5084         g_part_1->height = door_rect->height;
5085         g_part_2->width  = door_rect->width;
5086         g_part_2->height = door_rect->height;
5087         g_part_2->src_x = door_rect->width;
5088         g_part_2->src_y = g_part_1->src_y;
5089
5090         door->part_2.x = door->part_1.x;
5091         door->part_2.y = door->part_1.y;
5092
5093         if (door->width != -1)
5094         {
5095           g_part_1->width = door->width;
5096           g_part_2->width = door->width;
5097
5098           // special treatment for graphics and screen position of right wing
5099           g_part_2->src_x += door_rect->width - door->width;
5100           door->part_2.x  += door_rect->width - door->width;
5101         }
5102
5103         if (door->height != -1)
5104         {
5105           g_part_1->height = door->height;
5106           g_part_2->height = door->height;
5107
5108           // special treatment for graphics and screen position of bottom wing
5109           g_part_2->src_y += door_rect->height - door->height;
5110           door->part_2.y  += door_rect->height - door->height;
5111         }
5112
5113         // set animation delays for the default wings and panels
5114
5115         door->part_1.step_delay = door->step_delay;
5116         door->part_2.step_delay = door->step_delay;
5117         door->panel.step_delay  = door->step_delay;
5118
5119         // set animation draw order for the default wings
5120
5121         door->part_1.sort_priority = 2; // draw left wing over ...
5122         door->part_2.sort_priority = 1; //          ... right wing
5123
5124         // set animation draw offset for the default wings
5125
5126         if (door->anim_mode & ANIM_HORIZONTAL)
5127         {
5128           door->part_1.step_xoffset = door->step_offset;
5129           door->part_1.step_yoffset = 0;
5130           door->part_2.step_xoffset = door->step_offset * -1;
5131           door->part_2.step_yoffset = 0;
5132
5133           num_door_steps = g_part_1->width / door->step_offset;
5134         }
5135         else    // ANIM_VERTICAL
5136         {
5137           door->part_1.step_xoffset = 0;
5138           door->part_1.step_yoffset = door->step_offset;
5139           door->part_2.step_xoffset = 0;
5140           door->part_2.step_yoffset = door->step_offset * -1;
5141
5142           num_door_steps = g_part_1->height / door->step_offset;
5143         }
5144
5145         // set animation draw offset for the default panels
5146
5147         if (door->step_offset > 1)
5148         {
5149           num_panel_steps = 2 * door_rect->height / door->step_offset;
5150           door->panel.start_step = num_panel_steps - num_door_steps;
5151           door->panel.start_step_closing = door->panel.start_step;
5152         }
5153         else
5154         {
5155           num_panel_steps = door_rect->height / door->step_offset;
5156           door->panel.start_step = num_panel_steps - num_door_steps / 2;
5157           door->panel.start_step_closing = door->panel.start_step;
5158           door->panel.step_delay *= 2;
5159         }
5160       }
5161     }
5162   }
5163 }
5164
5165 void InitDoors(void)
5166 {
5167   int i;
5168
5169   for (i = 0; door_part_controls[i].door_token != -1; i++)
5170   {
5171     struct DoorPartControlInfo *dpc = &door_part_controls[i];
5172     struct DoorPartOrderInfo *dpo = &door_part_order[i];
5173
5174     // initialize "start_step_opening" and "start_step_closing", if needed
5175     if (dpc->pos->start_step_opening == 0 &&
5176         dpc->pos->start_step_closing == 0)
5177     {
5178       // dpc->pos->start_step_opening = dpc->pos->start_step;
5179       dpc->pos->start_step_closing = dpc->pos->start_step;
5180     }
5181
5182     // fill structure for door part draw order (sorted below)
5183     dpo->nr = i;
5184     dpo->sort_priority = dpc->pos->sort_priority;
5185   }
5186
5187   // sort door part controls according to sort_priority and graphic number
5188   qsort(door_part_order, MAX_DOOR_PARTS,
5189         sizeof(struct DoorPartOrderInfo), compareDoorPartOrderInfo);
5190 }
5191
5192 unsigned int OpenDoor(unsigned int door_state)
5193 {
5194   if (door_state & DOOR_COPY_BACK)
5195   {
5196     if (door_state & DOOR_OPEN_1)
5197       BlitBitmap(bitmap_db_door_1, bitmap_db_door_1,
5198                  1 * DXSIZE, 0, DXSIZE, DYSIZE, 0 * DXSIZE, 0);
5199
5200     if (door_state & DOOR_OPEN_2)
5201       BlitBitmap(bitmap_db_door_2, bitmap_db_door_2,
5202                  1 * VXSIZE, 0, VXSIZE, VYSIZE, 0 * VXSIZE, 0);
5203
5204     door_state &= ~DOOR_COPY_BACK;
5205   }
5206
5207   return MoveDoor(door_state);
5208 }
5209
5210 unsigned int CloseDoor(unsigned int door_state)
5211 {
5212   unsigned int old_door_state = GetDoorState();
5213
5214   if (!(door_state & DOOR_NO_COPY_BACK))
5215   {
5216     if (old_door_state & DOOR_OPEN_1)
5217       BlitBitmap(backbuffer, bitmap_db_door_1,
5218                  DX, DY, DXSIZE, DYSIZE, 0, 0);
5219
5220     if (old_door_state & DOOR_OPEN_2)
5221       BlitBitmap(backbuffer, bitmap_db_door_2,
5222                  VX, VY, VXSIZE, VYSIZE, 0, 0);
5223
5224     door_state &= ~DOOR_NO_COPY_BACK;
5225   }
5226
5227   return MoveDoor(door_state);
5228 }
5229
5230 unsigned int GetDoorState(void)
5231 {
5232   return MoveDoor(DOOR_GET_STATE);
5233 }
5234
5235 unsigned int SetDoorState(unsigned int door_state)
5236 {
5237   return MoveDoor(door_state | DOOR_SET_STATE);
5238 }
5239
5240 static int euclid(int a, int b)
5241 {
5242   return (b ? euclid(b, a % b) : a);
5243 }
5244
5245 unsigned int MoveDoor(unsigned int door_state)
5246 {
5247   struct Rect door_rect_list[] =
5248   {
5249     { DX, DY, DXSIZE, DYSIZE },
5250     { VX, VY, VXSIZE, VYSIZE }
5251   };
5252   static int door1 = DOOR_CLOSE_1;
5253   static int door2 = DOOR_CLOSE_2;
5254   DelayCounter door_delay = { 0 };
5255   int i;
5256
5257   if (door_state == DOOR_GET_STATE)
5258     return (door1 | door2);
5259
5260   if (door_state & DOOR_SET_STATE)
5261   {
5262     if (door_state & DOOR_ACTION_1)
5263       door1 = door_state & DOOR_ACTION_1;
5264     if (door_state & DOOR_ACTION_2)
5265       door2 = door_state & DOOR_ACTION_2;
5266
5267     return (door1 | door2);
5268   }
5269
5270   if (!(door_state & DOOR_FORCE_REDRAW))
5271   {
5272     if (door1 == DOOR_OPEN_1 && door_state & DOOR_OPEN_1)
5273       door_state &= ~DOOR_OPEN_1;
5274     else if (door1 == DOOR_CLOSE_1 && door_state & DOOR_CLOSE_1)
5275       door_state &= ~DOOR_CLOSE_1;
5276     if (door2 == DOOR_OPEN_2 && door_state & DOOR_OPEN_2)
5277       door_state &= ~DOOR_OPEN_2;
5278     else if (door2 == DOOR_CLOSE_2 && door_state & DOOR_CLOSE_2)
5279       door_state &= ~DOOR_CLOSE_2;
5280   }
5281
5282   if (global.autoplay_leveldir)
5283   {
5284     door_state |= DOOR_NO_DELAY;
5285     door_state &= ~DOOR_CLOSE_ALL;
5286   }
5287
5288   if (game_status == GAME_MODE_EDITOR && !(door_state & DOOR_FORCE_ANIM))
5289     door_state |= DOOR_NO_DELAY;
5290
5291   if (door_state & DOOR_ACTION)
5292   {
5293     boolean game_ended = (game_status == GAME_MODE_PLAYING && checkGameEnded());
5294     boolean door_panel_drawn[NUM_DOORS];
5295     boolean panel_has_doors[NUM_DOORS];
5296     boolean door_part_skip[MAX_DOOR_PARTS];
5297     boolean door_part_done[MAX_DOOR_PARTS];
5298     boolean door_part_done_all;
5299     int num_steps[MAX_DOOR_PARTS];
5300     int max_move_delay = 0;     // delay for complete animations of all doors
5301     int max_step_delay = 0;     // delay (ms) between two animation frames
5302     int num_move_steps = 0;     // number of animation steps for all doors
5303     int max_move_delay_doors_only = 0;  // delay for doors only (no panel)
5304     int num_move_steps_doors_only = 0;  // steps for doors only (no panel)
5305     int start = 0;
5306     int k;
5307
5308     for (i = 0; i < NUM_DOORS; i++)
5309       panel_has_doors[i] = FALSE;
5310
5311     for (i = 0; i < MAX_DOOR_PARTS; i++)
5312     {
5313       struct DoorPartControlInfo *dpc = &door_part_controls[i];
5314       struct GraphicInfo *g = &graphic_info[dpc->graphic];
5315       int door_token = dpc->door_token;
5316
5317       door_part_done[i] = FALSE;
5318       door_part_skip[i] = (!(door_state & door_token) ||
5319                            !g->bitmap);
5320     }
5321
5322     for (i = 0; i < MAX_DOOR_PARTS; i++)
5323     {
5324       int nr = door_part_order[i].nr;
5325       struct DoorPartControlInfo *dpc = &door_part_controls[nr];
5326       struct DoorPartPosInfo *pos = dpc->pos;
5327       struct GraphicInfo *g = &graphic_info[dpc->graphic];
5328       int door_token = dpc->door_token;
5329       int door_index = DOOR_INDEX_FROM_TOKEN(door_token);
5330       boolean is_panel = DOOR_PART_IS_PANEL(nr);
5331       int step_xoffset = ABS(pos->step_xoffset);
5332       int step_yoffset = ABS(pos->step_yoffset);
5333       int step_delay = pos->step_delay;
5334       int current_door_state = door_state & door_token;
5335       boolean door_opening = ((current_door_state & DOOR_OPEN)  != 0);
5336       boolean door_closing = ((current_door_state & DOOR_CLOSE) != 0);
5337       boolean part_opening = (is_panel ? door_closing : door_opening);
5338       int start_step = (part_opening ? pos->start_step_opening :
5339                         pos->start_step_closing);
5340       float move_xsize = (step_xoffset ? g->width  : 0);
5341       float move_ysize = (step_yoffset ? g->height : 0);
5342       int move_xsteps = (step_xoffset ? ceil(move_xsize / step_xoffset) : 0);
5343       int move_ysteps = (step_yoffset ? ceil(move_ysize / step_yoffset) : 0);
5344       int move_steps = (move_xsteps && move_ysteps ?
5345                         MIN(move_xsteps, move_ysteps) :
5346                         move_xsteps ? move_xsteps : move_ysteps) - start_step;
5347       int move_delay = move_steps * step_delay;
5348
5349       if (door_part_skip[nr])
5350         continue;
5351
5352       max_move_delay = MAX(max_move_delay, move_delay);
5353       max_step_delay = (max_step_delay == 0 ? step_delay :
5354                         euclid(max_step_delay, step_delay));
5355       num_steps[nr] = move_steps;
5356
5357       if (!is_panel)
5358       {
5359         max_move_delay_doors_only = MAX(max_move_delay_doors_only, move_delay);
5360
5361         panel_has_doors[door_index] = TRUE;
5362       }
5363     }
5364
5365     max_step_delay = MAX(1, max_step_delay);    // prevent division by zero
5366
5367     num_move_steps = max_move_delay / max_step_delay;
5368     num_move_steps_doors_only = max_move_delay_doors_only / max_step_delay;
5369
5370     door_delay.value = max_step_delay;
5371
5372     if ((door_state & DOOR_NO_DELAY) || setup.quick_doors)
5373     {
5374       start = num_move_steps - 1;
5375     }
5376     else
5377     {
5378       // opening door sound has priority over simultaneously closing door
5379       if (door_state & (DOOR_OPEN_1 | DOOR_OPEN_2))
5380       {
5381         PlayMenuSoundStereo(SND_DOOR_OPENING, SOUND_MIDDLE);
5382
5383         if (door_state & DOOR_OPEN_1)
5384           PlayMenuSoundStereo(SND_DOOR_1_OPENING, SOUND_MIDDLE);
5385         if (door_state & DOOR_OPEN_2)
5386           PlayMenuSoundStereo(SND_DOOR_2_OPENING, SOUND_MIDDLE);
5387       }
5388       else if (door_state & (DOOR_CLOSE_1 | DOOR_CLOSE_2))
5389       {
5390         PlayMenuSoundStereo(SND_DOOR_CLOSING, SOUND_MIDDLE);
5391
5392         if (door_state & DOOR_CLOSE_1)
5393           PlayMenuSoundStereo(SND_DOOR_1_CLOSING, SOUND_MIDDLE);
5394         if (door_state & DOOR_CLOSE_2)
5395           PlayMenuSoundStereo(SND_DOOR_2_CLOSING, SOUND_MIDDLE);
5396       }
5397     }
5398
5399     for (k = start; k < num_move_steps; k++)
5400     {
5401       int last_frame = num_move_steps - 1;      // last frame of this "for" loop
5402
5403       door_part_done_all = TRUE;
5404
5405       for (i = 0; i < NUM_DOORS; i++)
5406         door_panel_drawn[i] = FALSE;
5407
5408       for (i = 0; i < MAX_DOOR_PARTS; i++)
5409       {
5410         int nr = door_part_order[i].nr;
5411         struct DoorPartControlInfo *dpc = &door_part_controls[nr];
5412         struct DoorPartPosInfo *pos = dpc->pos;
5413         struct GraphicInfo *g = &graphic_info[dpc->graphic];
5414         int door_token = dpc->door_token;
5415         int door_index = DOOR_INDEX_FROM_TOKEN(door_token);
5416         boolean is_panel = DOOR_PART_IS_PANEL(nr);
5417         boolean is_panel_and_door_has_closed = FALSE;
5418         struct Rect *door_rect = &door_rect_list[door_index];
5419         Bitmap *bitmap_db_door = (door_token == DOOR_1 ? bitmap_db_door_1 :
5420                                   bitmap_db_door_2);
5421         Bitmap *bitmap = (is_panel ? bitmap_db_door : g->bitmap);
5422         int current_door_state = door_state & door_token;
5423         boolean door_opening = ((current_door_state & DOOR_OPEN)  != 0);
5424         boolean door_closing = !door_opening;
5425         boolean part_opening = (is_panel ? door_closing : door_opening);
5426         boolean part_closing = !part_opening;
5427         int start_step = (part_opening ? pos->start_step_opening :
5428                           pos->start_step_closing);
5429         int step_delay = pos->step_delay;
5430         int step_factor = step_delay / max_step_delay;
5431         int k1 = (step_factor ? k / step_factor + 1 : k);
5432         int k2 = (part_opening ? k1 + start_step : num_steps[nr] - k1);
5433         int kk = MAX(0, k2);
5434         int g_src_x = 0;
5435         int g_src_y = 0;
5436         int src_x, src_y, src_xx, src_yy;
5437         int dst_x, dst_y, dst_xx, dst_yy;
5438         int width, height;
5439
5440         if (door_part_skip[nr])
5441           continue;
5442
5443         if (!(door_state & door_token))
5444           continue;
5445
5446         if (!g->bitmap)
5447           continue;
5448
5449         if (!is_panel)
5450         {
5451           int k2_door = (door_opening ? k : num_move_steps_doors_only - k - 1);
5452           int kk_door = MAX(0, k2_door);
5453           int sync_frame = kk_door * door_delay.value;
5454           int frame = getGraphicAnimationFrame(dpc->graphic, sync_frame);
5455
5456           getFixedGraphicSource(dpc->graphic, frame, &bitmap,
5457                                 &g_src_x, &g_src_y);
5458         }
5459
5460         // draw door panel
5461
5462         if (!door_panel_drawn[door_index])
5463         {
5464           ClearRectangle(drawto, door_rect->x, door_rect->y,
5465                          door_rect->width, door_rect->height);
5466
5467           door_panel_drawn[door_index] = TRUE;
5468         }
5469
5470         // draw opening or closing door parts
5471
5472         if (pos->step_xoffset < 0)      // door part on right side
5473         {
5474           src_xx = 0;
5475           dst_xx = pos->x + ABS(kk * pos->step_xoffset);
5476           width = g->width;
5477
5478           if (dst_xx + width > door_rect->width)
5479             width = door_rect->width - dst_xx;
5480         }
5481         else                            // door part on left side
5482         {
5483           src_xx = 0;
5484           dst_xx = pos->x - kk * pos->step_xoffset;
5485
5486           if (dst_xx < 0)
5487           {
5488             src_xx = ABS(dst_xx);
5489             dst_xx = 0;
5490           }
5491
5492           width = g->width - src_xx;
5493
5494           if (width > door_rect->width)
5495             width = door_rect->width;
5496
5497           // Debug("tools:MoveDoor", "k == %d [%d]", k, start_step);
5498         }
5499
5500         if (pos->step_yoffset < 0)      // door part on bottom side
5501         {
5502           src_yy = 0;
5503           dst_yy = pos->y + ABS(kk * pos->step_yoffset);
5504           height = g->height;
5505
5506           if (dst_yy + height > door_rect->height)
5507             height = door_rect->height - dst_yy;
5508         }
5509         else                            // door part on top side
5510         {
5511           src_yy = 0;
5512           dst_yy = pos->y - kk * pos->step_yoffset;
5513
5514           if (dst_yy < 0)
5515           {
5516             src_yy = ABS(dst_yy);
5517             dst_yy = 0;
5518           }
5519
5520           height = g->height - src_yy;
5521         }
5522
5523         src_x = g_src_x + src_xx;
5524         src_y = g_src_y + src_yy;
5525
5526         dst_x = door_rect->x + dst_xx;
5527         dst_y = door_rect->y + dst_yy;
5528
5529         is_panel_and_door_has_closed =
5530           (is_panel &&
5531            door_closing &&
5532            panel_has_doors[door_index] &&
5533            k >= num_move_steps_doors_only - 1);
5534
5535         if (width  >= 0 && width  <= g->width &&
5536             height >= 0 && height <= g->height &&
5537             !is_panel_and_door_has_closed)
5538         {
5539           if (is_panel || !pos->draw_masked)
5540             BlitBitmap(bitmap, drawto, src_x, src_y, width, height,
5541                        dst_x, dst_y);
5542           else
5543             BlitBitmapMasked(bitmap, drawto, src_x, src_y, width, height,
5544                              dst_x, dst_y);
5545         }
5546
5547         redraw_mask |= REDRAW_DOOR_FROM_TOKEN(door_token);
5548
5549         if ((part_opening && (width < 0         || height < 0)) ||
5550             (part_closing && (width >= g->width && height >= g->height)))
5551           door_part_done[nr] = TRUE;
5552
5553         // continue door part animations, but not panel after door has closed
5554         if (!door_part_done[nr] && !is_panel_and_door_has_closed)
5555           door_part_done_all = FALSE;
5556       }
5557
5558       if (!(door_state & DOOR_NO_DELAY))
5559       {
5560         if (game_ended)
5561           HandleGameActions();
5562
5563         BackToFront();
5564
5565         SkipUntilDelayReached(&door_delay, &k, last_frame);
5566
5567         // prevent OS (Windows) from complaining about program not responding
5568         CheckQuitEvent();
5569       }
5570
5571       if (door_part_done_all)
5572         break;
5573     }
5574
5575     if (!(door_state & DOOR_NO_DELAY))
5576     {
5577       // wait for specified door action post delay
5578       if (door_state & DOOR_ACTION_1 && door_state & DOOR_ACTION_2)
5579         door_delay.value = MAX(door_1.post_delay, door_2.post_delay);
5580       else if (door_state & DOOR_ACTION_1)
5581         door_delay.value = door_1.post_delay;
5582       else if (door_state & DOOR_ACTION_2)
5583         door_delay.value = door_2.post_delay;
5584
5585       while (!DelayReached(&door_delay))
5586       {
5587         if (game_ended)
5588           HandleGameActions();
5589
5590         BackToFront();
5591       }
5592     }
5593   }
5594
5595   if (door_state & DOOR_ACTION_1)
5596     door1 = door_state & DOOR_ACTION_1;
5597   if (door_state & DOOR_ACTION_2)
5598     door2 = door_state & DOOR_ACTION_2;
5599
5600   // draw masked border over door area
5601   DrawMaskedBorder(REDRAW_DOOR_1);
5602   DrawMaskedBorder(REDRAW_DOOR_2);
5603
5604   ClearAutoRepeatKeyEvents();
5605
5606   return (door1 | door2);
5607 }
5608
5609 static boolean useSpecialEditorDoor(void)
5610 {
5611   int graphic = IMG_GLOBAL_BORDER_EDITOR;
5612   boolean redefined = getImageListEntryFromImageID(graphic)->redefined;
5613
5614   // do not draw special editor door if editor border defined or redefined
5615   if (graphic_info[graphic].bitmap != NULL || redefined)
5616     return FALSE;
5617
5618   // do not draw special editor door if global border defined to be empty
5619   if (graphic_info[IMG_GLOBAL_BORDER].bitmap == NULL)
5620     return FALSE;
5621
5622   // do not draw special editor door if viewport definitions do not match
5623   if (EX != VX ||
5624       EY >= VY ||
5625       EXSIZE != VXSIZE ||
5626       EY + EYSIZE != VY + VYSIZE)
5627     return FALSE;
5628
5629   return TRUE;
5630 }
5631
5632 void DrawSpecialEditorDoor(void)
5633 {
5634   struct GraphicInfo *gfx1 = &graphic_info[IMG_DOOR_2_TOP_BORDER_CORRECTION];
5635   int top_border_width = gfx1->width;
5636   int top_border_height = gfx1->height;
5637   int outer_border = viewport.door_2[GAME_MODE_EDITOR].border_size;
5638   int ex = EX - outer_border;
5639   int ey = EY - outer_border;
5640   int vy = VY - outer_border;
5641   int exsize = EXSIZE + 2 * outer_border;
5642
5643   if (!useSpecialEditorDoor())
5644     return;
5645
5646   // draw bigger level editor toolbox window
5647   BlitBitmap(gfx1->bitmap, drawto, gfx1->src_x, gfx1->src_y,
5648              top_border_width, top_border_height, ex, ey - top_border_height);
5649   BlitBitmap(graphic_info[IMG_GLOBAL_BORDER].bitmap, drawto, ex, vy,
5650              exsize, EYSIZE - VYSIZE + outer_border, ex, ey);
5651
5652   redraw_mask |= REDRAW_ALL;
5653 }
5654
5655 void UndrawSpecialEditorDoor(void)
5656 {
5657   struct GraphicInfo *gfx1 = &graphic_info[IMG_DOOR_2_TOP_BORDER_CORRECTION];
5658   int top_border_width = gfx1->width;
5659   int top_border_height = gfx1->height;
5660   int outer_border = viewport.door_2[GAME_MODE_EDITOR].border_size;
5661   int ex = EX - outer_border;
5662   int ey = EY - outer_border;
5663   int ey_top = ey - top_border_height;
5664   int exsize = EXSIZE + 2 * outer_border;
5665   int eysize = EYSIZE + 2 * outer_border;
5666
5667   if (!useSpecialEditorDoor())
5668     return;
5669
5670   // draw normal tape recorder window
5671   if (graphic_info[IMG_GLOBAL_BORDER].bitmap)
5672   {
5673     BlitBitmap(graphic_info[IMG_GLOBAL_BORDER].bitmap, drawto,
5674                ex, ey_top, top_border_width, top_border_height,
5675                ex, ey_top);
5676     BlitBitmap(graphic_info[IMG_GLOBAL_BORDER].bitmap, drawto,
5677                ex, ey, exsize, eysize, ex, ey);
5678   }
5679   else
5680   {
5681     // if screen background is set to "[NONE]", clear editor toolbox window
5682     ClearRectangle(drawto, ex, ey_top, top_border_width, top_border_height);
5683     ClearRectangle(drawto, ex, ey, exsize, eysize);
5684   }
5685
5686   redraw_mask |= REDRAW_ALL;
5687 }
5688
5689
5690 // ---------- new tool button stuff -------------------------------------------
5691
5692 static struct
5693 {
5694   int graphic;
5695   struct TextPosInfo *pos;
5696   int gadget_id;
5697   boolean is_touch_button;
5698   char *infotext;
5699 } toolbutton_info[NUM_TOOL_BUTTONS] =
5700 {
5701   {
5702     IMG_GFX_REQUEST_BUTTON_YES,         &request.button.yes,
5703     TOOL_CTRL_ID_YES, FALSE,            "yes"
5704   },
5705   {
5706     IMG_GFX_REQUEST_BUTTON_NO,          &request.button.no,
5707     TOOL_CTRL_ID_NO, FALSE,             "no"
5708   },
5709   {
5710     IMG_GFX_REQUEST_BUTTON_CONFIRM,     &request.button.confirm,
5711     TOOL_CTRL_ID_CONFIRM, FALSE,        "confirm"
5712   },
5713   {
5714     IMG_GFX_REQUEST_BUTTON_PLAYER_1,    &request.button.player_1,
5715     TOOL_CTRL_ID_PLAYER_1, FALSE,       "player 1"
5716   },
5717   {
5718     IMG_GFX_REQUEST_BUTTON_PLAYER_2,    &request.button.player_2,
5719     TOOL_CTRL_ID_PLAYER_2, FALSE,       "player 2"
5720   },
5721   {
5722     IMG_GFX_REQUEST_BUTTON_PLAYER_3,    &request.button.player_3,
5723     TOOL_CTRL_ID_PLAYER_3, FALSE,       "player 3"
5724   },
5725   {
5726     IMG_GFX_REQUEST_BUTTON_PLAYER_4,    &request.button.player_4,
5727     TOOL_CTRL_ID_PLAYER_4, FALSE,       "player 4"
5728   },
5729   {
5730     IMG_GFX_REQUEST_BUTTON_TOUCH_YES,   &request.button.touch_yes,
5731     TOOL_CTRL_ID_TOUCH_YES, TRUE,       "yes"
5732   },
5733   {
5734     IMG_GFX_REQUEST_BUTTON_TOUCH_NO,    &request.button.touch_no,
5735     TOOL_CTRL_ID_TOUCH_NO, TRUE,        "no"
5736   },
5737   {
5738     IMG_GFX_REQUEST_BUTTON_TOUCH_CONFIRM, &request.button.touch_confirm,
5739     TOOL_CTRL_ID_TOUCH_CONFIRM, TRUE,   "confirm"
5740   }
5741 };
5742
5743 void CreateToolButtons(void)
5744 {
5745   int i;
5746
5747   for (i = 0; i < NUM_TOOL_BUTTONS; i++)
5748   {
5749     int graphic = toolbutton_info[i].graphic;
5750     struct GraphicInfo *gfx = &graphic_info[graphic];
5751     struct TextPosInfo *pos = toolbutton_info[i].pos;
5752     struct GadgetInfo *gi;
5753     Bitmap *deco_bitmap = None;
5754     int deco_x = 0, deco_y = 0, deco_xpos = 0, deco_ypos = 0;
5755     unsigned int event_mask = GD_EVENT_RELEASED;
5756     boolean is_touch_button = toolbutton_info[i].is_touch_button;
5757     int base_x = (is_touch_button ? 0 : DX);
5758     int base_y = (is_touch_button ? 0 : DY);
5759     int gd_x = gfx->src_x;
5760     int gd_y = gfx->src_y;
5761     int gd_xp = gfx->src_x + gfx->pressed_xoffset;
5762     int gd_yp = gfx->src_y + gfx->pressed_yoffset;
5763     int x = pos->x;
5764     int y = pos->y;
5765     int id = i;
5766
5767     // do not use touch buttons if overlay touch buttons are disabled
5768     if (is_touch_button && !setup.touch.overlay_buttons)
5769       continue;
5770
5771     if (global.use_envelope_request && !is_touch_button)
5772     {
5773       setRequestPosition(&base_x, &base_y, TRUE);
5774
5775       // check if request buttons are outside of envelope and fix, if needed
5776       if (x < 0 || x + gfx->width  > request.width ||
5777           y < 0 || y + gfx->height > request.height)
5778       {
5779         if (id == TOOL_CTRL_ID_YES)
5780         {
5781           x = 0;
5782           y = request.height - 2 * request.border_size - gfx->height;
5783         }
5784         else if (id == TOOL_CTRL_ID_NO)
5785         {
5786           x = request.width  - 2 * request.border_size - gfx->width;
5787           y = request.height - 2 * request.border_size - gfx->height;
5788         }
5789         else if (id == TOOL_CTRL_ID_CONFIRM)
5790         {
5791           x = (request.width - 2 * request.border_size - gfx->width) / 2;
5792           y = request.height - 2 * request.border_size - gfx->height;
5793         }
5794         else if (id >= TOOL_CTRL_ID_PLAYER_1 && id <= TOOL_CTRL_ID_PLAYER_4)
5795         {
5796           int player_nr = id - TOOL_CTRL_ID_PLAYER_1;
5797
5798           x = (request.width - 2 * request.border_size - gfx->width) / 2;
5799           y = request.height - 2 * request.border_size - gfx->height * 2;
5800
5801           x += (player_nr == 3 ? -1 : player_nr == 1 ? +1 : 0) * gfx->width;
5802           y += (player_nr == 0 ? -1 : player_nr == 2 ? +1 : 0) * gfx->height;
5803         }
5804       }
5805     }
5806
5807     if (id >= TOOL_CTRL_ID_PLAYER_1 && id <= TOOL_CTRL_ID_PLAYER_4 &&
5808         pos->draw_player)
5809     {
5810       int player_nr = id - TOOL_CTRL_ID_PLAYER_1;
5811
5812       getSizedGraphicSource(PLAYER_NR_GFX(IMG_PLAYER_1, player_nr), 0,
5813                             pos->size, &deco_bitmap, &deco_x, &deco_y);
5814       deco_xpos = (gfx->width  - pos->size) / 2;
5815       deco_ypos = (gfx->height - pos->size) / 2;
5816     }
5817
5818     gi = CreateGadget(GDI_CUSTOM_ID, id,
5819                       GDI_IMAGE_ID, graphic,
5820                       GDI_INFO_TEXT, toolbutton_info[i].infotext,
5821                       GDI_X, base_x + x,
5822                       GDI_Y, base_y + y,
5823                       GDI_WIDTH, gfx->width,
5824                       GDI_HEIGHT, gfx->height,
5825                       GDI_TYPE, GD_TYPE_NORMAL_BUTTON,
5826                       GDI_STATE, GD_BUTTON_UNPRESSED,
5827                       GDI_DESIGN_UNPRESSED, gfx->bitmap, gd_x, gd_y,
5828                       GDI_DESIGN_PRESSED, gfx->bitmap, gd_xp, gd_yp,
5829                       GDI_DECORATION_DESIGN, deco_bitmap, deco_x, deco_y,
5830                       GDI_DECORATION_POSITION, deco_xpos, deco_ypos,
5831                       GDI_DECORATION_SIZE, pos->size, pos->size,
5832                       GDI_DECORATION_SHIFTING, 1, 1,
5833                       GDI_DIRECT_DRAW, FALSE,
5834                       GDI_OVERLAY_TOUCH_BUTTON, is_touch_button,
5835                       GDI_EVENT_MASK, event_mask,
5836                       GDI_CALLBACK_ACTION, HandleToolButtons,
5837                       GDI_END);
5838
5839     if (gi == NULL)
5840       Fail("cannot create gadget");
5841
5842     tool_gadget[id] = gi;
5843   }
5844 }
5845
5846 void FreeToolButtons(void)
5847 {
5848   int i;
5849
5850   for (i = 0; i < NUM_TOOL_BUTTONS; i++)
5851     FreeGadget(tool_gadget[i]);
5852 }
5853
5854 static void MapToolButtons(unsigned int req_state)
5855 {
5856   if (req_state & REQ_ASK)
5857   {
5858     MapGadget(tool_gadget[TOOL_CTRL_ID_YES]);
5859     MapGadget(tool_gadget[TOOL_CTRL_ID_NO]);
5860     MapGadget(tool_gadget[TOOL_CTRL_ID_TOUCH_YES]);
5861     MapGadget(tool_gadget[TOOL_CTRL_ID_TOUCH_NO]);
5862   }
5863   else if (req_state & REQ_CONFIRM)
5864   {
5865     MapGadget(tool_gadget[TOOL_CTRL_ID_CONFIRM]);
5866     MapGadget(tool_gadget[TOOL_CTRL_ID_TOUCH_CONFIRM]);
5867   }
5868   else if (req_state & REQ_PLAYER)
5869   {
5870     MapGadget(tool_gadget[TOOL_CTRL_ID_PLAYER_1]);
5871     MapGadget(tool_gadget[TOOL_CTRL_ID_PLAYER_2]);
5872     MapGadget(tool_gadget[TOOL_CTRL_ID_PLAYER_3]);
5873     MapGadget(tool_gadget[TOOL_CTRL_ID_PLAYER_4]);
5874   }
5875 }
5876
5877 static void UnmapToolButtons(void)
5878 {
5879   int i;
5880
5881   for (i = 0; i < NUM_TOOL_BUTTONS; i++)
5882     UnmapGadget(tool_gadget[i]);
5883 }
5884
5885 static void HandleToolButtons(struct GadgetInfo *gi)
5886 {
5887   request_gadget_id = gi->custom_id;
5888 }
5889
5890 static struct Mapping_EM_to_RND_object
5891 {
5892   int element_em;
5893   boolean is_rnd_to_em_mapping;         // unique mapping EM <-> RND
5894   boolean is_backside;                  // backside of moving element
5895
5896   int element_rnd;
5897   int action;
5898   int direction;
5899 }
5900 em_object_mapping_list[GAME_TILE_MAX + 1] =
5901 {
5902   {
5903     Zborder,                            FALSE,  FALSE,
5904     EL_EMPTY,                           -1, -1
5905   },
5906   {
5907     Zplayer,                            FALSE,  FALSE,
5908     EL_EMPTY,                           -1, -1
5909   },
5910
5911   {
5912     Zbug,                               FALSE,  FALSE,
5913     EL_EMPTY,                           -1, -1
5914   },
5915   {
5916     Ztank,                              FALSE,  FALSE,
5917     EL_EMPTY,                           -1, -1
5918   },
5919   {
5920     Zeater,                             FALSE,  FALSE,
5921     EL_EMPTY,                           -1, -1
5922   },
5923   {
5924     Zdynamite,                          FALSE,  FALSE,
5925     EL_EMPTY,                           -1, -1
5926   },
5927   {
5928     Zboom,                              FALSE,  FALSE,
5929     EL_EMPTY,                           -1, -1
5930   },
5931
5932   {
5933     Xchain,                             FALSE,  FALSE,
5934     EL_DEFAULT,                         ACTION_EXPLODING, -1
5935   },
5936   {
5937     Xboom_bug,                          FALSE,  FALSE,
5938     EL_BUG,                             ACTION_EXPLODING, -1
5939   },
5940   {
5941     Xboom_tank,                         FALSE,  FALSE,
5942     EL_SPACESHIP,                       ACTION_EXPLODING, -1
5943   },
5944   {
5945     Xboom_android,                      FALSE,  FALSE,
5946     EL_EMC_ANDROID,                     ACTION_OTHER, -1
5947   },
5948   {
5949     Xboom_1,                            FALSE,  FALSE,
5950     EL_DEFAULT,                         ACTION_EXPLODING, -1
5951   },
5952   {
5953     Xboom_2,                            FALSE,  FALSE,
5954     EL_DEFAULT,                         ACTION_EXPLODING, -1
5955   },
5956
5957   {
5958     Xblank,                             TRUE,   FALSE,
5959     EL_EMPTY,                           -1, -1
5960   },
5961
5962   {
5963     Xsplash_e,                          FALSE,  FALSE,
5964     EL_ACID_SPLASH_RIGHT,               -1, -1
5965   },
5966   {
5967     Xsplash_w,                          FALSE,  FALSE,
5968     EL_ACID_SPLASH_LEFT,                -1, -1
5969   },
5970
5971   {
5972     Xplant,                             TRUE,   FALSE,
5973     EL_EMC_PLANT,                       -1, -1
5974   },
5975   {
5976     Yplant,                             FALSE,  FALSE,
5977     EL_EMC_PLANT,                       -1, -1
5978   },
5979
5980   {
5981     Xacid_1,                            TRUE,   FALSE,
5982     EL_ACID,                            -1, -1
5983   },
5984   {
5985     Xacid_2,                            FALSE,  FALSE,
5986     EL_ACID,                            -1, -1
5987   },
5988   {
5989     Xacid_3,                            FALSE,  FALSE,
5990     EL_ACID,                            -1, -1
5991   },
5992   {
5993     Xacid_4,                            FALSE,  FALSE,
5994     EL_ACID,                            -1, -1
5995   },
5996   {
5997     Xacid_5,                            FALSE,  FALSE,
5998     EL_ACID,                            -1, -1
5999   },
6000   {
6001     Xacid_6,                            FALSE,  FALSE,
6002     EL_ACID,                            -1, -1
6003   },
6004   {
6005     Xacid_7,                            FALSE,  FALSE,
6006     EL_ACID,                            -1, -1
6007   },
6008   {
6009     Xacid_8,                            FALSE,  FALSE,
6010     EL_ACID,                            -1, -1
6011   },
6012
6013   {
6014     Xfake_acid_1,                       TRUE,   FALSE,
6015     EL_EMC_FAKE_ACID,                   -1, -1
6016   },
6017   {
6018     Xfake_acid_2,                       FALSE,  FALSE,
6019     EL_EMC_FAKE_ACID,                   -1, -1
6020   },
6021   {
6022     Xfake_acid_3,                       FALSE,  FALSE,
6023     EL_EMC_FAKE_ACID,                   -1, -1
6024   },
6025   {
6026     Xfake_acid_4,                       FALSE,  FALSE,
6027     EL_EMC_FAKE_ACID,                   -1, -1
6028   },
6029   {
6030     Xfake_acid_5,                       FALSE,  FALSE,
6031     EL_EMC_FAKE_ACID,                   -1, -1
6032   },
6033   {
6034     Xfake_acid_6,                       FALSE,  FALSE,
6035     EL_EMC_FAKE_ACID,                   -1, -1
6036   },
6037   {
6038     Xfake_acid_7,                       FALSE,  FALSE,
6039     EL_EMC_FAKE_ACID,                   -1, -1
6040   },
6041   {
6042     Xfake_acid_8,                       FALSE,  FALSE,
6043     EL_EMC_FAKE_ACID,                   -1, -1
6044   },
6045
6046   {
6047     Xfake_acid_1_player,                FALSE,  FALSE,
6048     EL_EMC_FAKE_ACID,                   -1, -1
6049   },
6050   {
6051     Xfake_acid_2_player,                FALSE,  FALSE,
6052     EL_EMC_FAKE_ACID,                   -1, -1
6053   },
6054   {
6055     Xfake_acid_3_player,                FALSE,  FALSE,
6056     EL_EMC_FAKE_ACID,                   -1, -1
6057   },
6058   {
6059     Xfake_acid_4_player,                FALSE,  FALSE,
6060     EL_EMC_FAKE_ACID,                   -1, -1
6061   },
6062   {
6063     Xfake_acid_5_player,                FALSE,  FALSE,
6064     EL_EMC_FAKE_ACID,                   -1, -1
6065   },
6066   {
6067     Xfake_acid_6_player,                FALSE,  FALSE,
6068     EL_EMC_FAKE_ACID,                   -1, -1
6069   },
6070   {
6071     Xfake_acid_7_player,                FALSE,  FALSE,
6072     EL_EMC_FAKE_ACID,                   -1, -1
6073   },
6074   {
6075     Xfake_acid_8_player,                FALSE,  FALSE,
6076     EL_EMC_FAKE_ACID,                   -1, -1
6077   },
6078
6079   {
6080     Xgrass,                             TRUE,   FALSE,
6081     EL_EMC_GRASS,                       -1, -1
6082   },
6083   {
6084     Ygrass_nB,                          FALSE,  FALSE,
6085     EL_EMC_GRASS,                       ACTION_DIGGING, MV_BIT_UP
6086   },
6087   {
6088     Ygrass_eB,                          FALSE,  FALSE,
6089     EL_EMC_GRASS,                       ACTION_DIGGING, MV_BIT_RIGHT
6090   },
6091   {
6092     Ygrass_sB,                          FALSE,  FALSE,
6093     EL_EMC_GRASS,                       ACTION_DIGGING, MV_BIT_DOWN
6094   },
6095   {
6096     Ygrass_wB,                          FALSE,  FALSE,
6097     EL_EMC_GRASS,                       ACTION_DIGGING, MV_BIT_LEFT
6098   },
6099
6100   {
6101     Xdirt,                              TRUE,   FALSE,
6102     EL_SAND,                            -1, -1
6103   },
6104   {
6105     Ydirt_nB,                           FALSE,  FALSE,
6106     EL_SAND,                            ACTION_DIGGING, MV_BIT_UP
6107   },
6108   {
6109     Ydirt_eB,                           FALSE,  FALSE,
6110     EL_SAND,                            ACTION_DIGGING, MV_BIT_RIGHT
6111   },
6112   {
6113     Ydirt_sB,                           FALSE,  FALSE,
6114     EL_SAND,                            ACTION_DIGGING, MV_BIT_DOWN
6115   },
6116   {
6117     Ydirt_wB,                           FALSE,  FALSE,
6118     EL_SAND,                            ACTION_DIGGING, MV_BIT_LEFT
6119   },
6120
6121   {
6122     Xandroid,                           TRUE,   FALSE,
6123     EL_EMC_ANDROID,                     ACTION_ACTIVE, -1
6124   },
6125   {
6126     Xandroid_1_n,                       FALSE,  FALSE,
6127     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_UP
6128   },
6129   {
6130     Xandroid_2_n,                       FALSE,  FALSE,
6131     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_UP
6132   },
6133   {
6134     Xandroid_1_e,                       FALSE,  FALSE,
6135     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_RIGHT
6136   },
6137   {
6138     Xandroid_2_e,                       FALSE,  FALSE,
6139     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_RIGHT
6140   },
6141   {
6142     Xandroid_1_w,                       FALSE,  FALSE,
6143     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_LEFT
6144   },
6145   {
6146     Xandroid_2_w,                       FALSE,  FALSE,
6147     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_LEFT
6148   },
6149   {
6150     Xandroid_1_s,                       FALSE,  FALSE,
6151     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_DOWN
6152   },
6153   {
6154     Xandroid_2_s,                       FALSE,  FALSE,
6155     EL_EMC_ANDROID,                     ACTION_ACTIVE, MV_BIT_DOWN
6156   },
6157   {
6158     Yandroid_n,                         FALSE,  FALSE,
6159     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_UP
6160   },
6161   {
6162     Yandroid_nB,                        FALSE,  TRUE,
6163     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_UP
6164   },
6165   {
6166     Yandroid_ne,                        FALSE,  FALSE,
6167     EL_EMC_ANDROID,                     ACTION_GROWING, MV_BIT_UPRIGHT
6168   },
6169   {
6170     Yandroid_neB,                       FALSE,  TRUE,
6171     EL_EMC_ANDROID,                     ACTION_SHRINKING, MV_BIT_UPRIGHT
6172   },
6173   {
6174     Yandroid_e,                         FALSE,  FALSE,
6175     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_RIGHT
6176   },
6177   {
6178     Yandroid_eB,                        FALSE,  TRUE,
6179     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_RIGHT
6180   },
6181   {
6182     Yandroid_se,                        FALSE,  FALSE,
6183     EL_EMC_ANDROID,                     ACTION_GROWING, MV_BIT_DOWNRIGHT
6184   },
6185   {
6186     Yandroid_seB,                       FALSE,  TRUE,
6187     EL_EMC_ANDROID,                     ACTION_SHRINKING, MV_BIT_DOWNRIGHT
6188   },
6189   {
6190     Yandroid_s,                         FALSE,  FALSE,
6191     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_DOWN
6192   },
6193   {
6194     Yandroid_sB,                        FALSE,  TRUE,
6195     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_DOWN
6196   },
6197   {
6198     Yandroid_sw,                        FALSE,  FALSE,
6199     EL_EMC_ANDROID,                     ACTION_GROWING, MV_BIT_DOWNLEFT
6200   },
6201   {
6202     Yandroid_swB,                       FALSE,  TRUE,
6203     EL_EMC_ANDROID,                     ACTION_SHRINKING, MV_BIT_DOWNLEFT
6204   },
6205   {
6206     Yandroid_w,                         FALSE,  FALSE,
6207     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_LEFT
6208   },
6209   {
6210     Yandroid_wB,                        FALSE,  TRUE,
6211     EL_EMC_ANDROID,                     ACTION_MOVING, MV_BIT_LEFT
6212   },
6213   {
6214     Yandroid_nw,                        FALSE,  FALSE,
6215     EL_EMC_ANDROID,                     ACTION_GROWING, MV_BIT_UPLEFT
6216   },
6217   {
6218     Yandroid_nwB,                       FALSE,  TRUE,
6219     EL_EMC_ANDROID,                     ACTION_SHRINKING, MV_BIT_UPLEFT
6220   },
6221
6222   {
6223     Xeater_n,                           TRUE,   FALSE,
6224     EL_YAMYAM_UP,                       -1, -1
6225   },
6226   {
6227     Xeater_e,                           TRUE,   FALSE,
6228     EL_YAMYAM_RIGHT,                    -1, -1
6229   },
6230   {
6231     Xeater_w,                           TRUE,   FALSE,
6232     EL_YAMYAM_LEFT,                     -1, -1
6233   },
6234   {
6235     Xeater_s,                           TRUE,   FALSE,
6236     EL_YAMYAM_DOWN,                     -1, -1
6237   },
6238   {
6239     Yeater_n,                           FALSE,  FALSE,
6240     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_UP
6241   },
6242   {
6243     Yeater_nB,                          FALSE,  TRUE,
6244     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_UP
6245   },
6246   {
6247     Yeater_e,                           FALSE,  FALSE,
6248     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_RIGHT
6249   },
6250   {
6251     Yeater_eB,                          FALSE,  TRUE,
6252     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_RIGHT
6253   },
6254   {
6255     Yeater_s,                           FALSE,  FALSE,
6256     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_DOWN
6257   },
6258   {
6259     Yeater_sB,                          FALSE,  TRUE,
6260     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_DOWN
6261   },
6262   {
6263     Yeater_w,                           FALSE,  FALSE,
6264     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_LEFT
6265   },
6266   {
6267     Yeater_wB,                          FALSE,  TRUE,
6268     EL_YAMYAM,                          ACTION_MOVING, MV_BIT_LEFT
6269   },
6270   {
6271     Yeater_stone,                       FALSE,  FALSE,
6272     EL_YAMYAM,                          ACTION_SMASHED_BY_ROCK, -1
6273   },
6274   {
6275     Yeater_spring,                      FALSE,  FALSE,
6276     EL_YAMYAM,                          ACTION_SMASHED_BY_SPRING, -1
6277   },
6278
6279   {
6280     Xalien,                             TRUE,   FALSE,
6281     EL_ROBOT,                           -1, -1
6282   },
6283   {
6284     Xalien_pause,                       FALSE,  FALSE,
6285     EL_ROBOT,                           -1, -1
6286   },
6287   {
6288     Yalien_n,                           FALSE,  FALSE,
6289     EL_ROBOT,                           ACTION_MOVING, MV_BIT_UP
6290   },
6291   {
6292     Yalien_nB,                          FALSE,  TRUE,
6293     EL_ROBOT,                           ACTION_MOVING, MV_BIT_UP
6294   },
6295   {
6296     Yalien_e,                           FALSE,  FALSE,
6297     EL_ROBOT,                           ACTION_MOVING, MV_BIT_RIGHT
6298   },
6299   {
6300     Yalien_eB,                          FALSE,  TRUE,
6301     EL_ROBOT,                           ACTION_MOVING, MV_BIT_RIGHT
6302   },
6303   {
6304     Yalien_s,                           FALSE,  FALSE,
6305     EL_ROBOT,                           ACTION_MOVING, MV_BIT_DOWN
6306   },
6307   {
6308     Yalien_sB,                          FALSE,  TRUE,
6309     EL_ROBOT,                           ACTION_MOVING, MV_BIT_DOWN
6310   },
6311   {
6312     Yalien_w,                           FALSE,  FALSE,
6313     EL_ROBOT,                           ACTION_MOVING, MV_BIT_LEFT
6314   },
6315   {
6316     Yalien_wB,                          FALSE,  TRUE,
6317     EL_ROBOT,                           ACTION_MOVING, MV_BIT_LEFT
6318   },
6319   {
6320     Yalien_stone,                       FALSE,  FALSE,
6321     EL_ROBOT,                           ACTION_SMASHED_BY_ROCK, -1
6322   },
6323   {
6324     Yalien_spring,                      FALSE,  FALSE,
6325     EL_ROBOT,                           ACTION_SMASHED_BY_SPRING, -1
6326   },
6327
6328   {
6329     Xbug_1_n,                           TRUE,   FALSE,
6330     EL_BUG_UP,                          -1, -1
6331   },
6332   {
6333     Xbug_1_e,                           TRUE,   FALSE,
6334     EL_BUG_RIGHT,                       -1, -1
6335   },
6336   {
6337     Xbug_1_s,                           TRUE,   FALSE,
6338     EL_BUG_DOWN,                        -1, -1
6339   },
6340   {
6341     Xbug_1_w,                           TRUE,   FALSE,
6342     EL_BUG_LEFT,                        -1, -1
6343   },
6344   {
6345     Xbug_2_n,                           FALSE,  FALSE,
6346     EL_BUG_UP,                          -1, -1
6347   },
6348   {
6349     Xbug_2_e,                           FALSE,  FALSE,
6350     EL_BUG_RIGHT,                       -1, -1
6351   },
6352   {
6353     Xbug_2_s,                           FALSE,  FALSE,
6354     EL_BUG_DOWN,                        -1, -1
6355   },
6356   {
6357     Xbug_2_w,                           FALSE,  FALSE,
6358     EL_BUG_LEFT,                        -1, -1
6359   },
6360   {
6361     Ybug_n,                             FALSE,  FALSE,
6362     EL_BUG,                             ACTION_MOVING, MV_BIT_UP
6363   },
6364   {
6365     Ybug_nB,                            FALSE,  TRUE,
6366     EL_BUG,                             ACTION_MOVING, MV_BIT_UP
6367   },
6368   {
6369     Ybug_e,                             FALSE,  FALSE,
6370     EL_BUG,                             ACTION_MOVING, MV_BIT_RIGHT
6371   },
6372   {
6373     Ybug_eB,                            FALSE,  TRUE,
6374     EL_BUG,                             ACTION_MOVING, MV_BIT_RIGHT
6375   },
6376   {
6377     Ybug_s,                             FALSE,  FALSE,
6378     EL_BUG,                             ACTION_MOVING, MV_BIT_DOWN
6379   },
6380   {
6381     Ybug_sB,                            FALSE,  TRUE,
6382     EL_BUG,                             ACTION_MOVING, MV_BIT_DOWN
6383   },
6384   {
6385     Ybug_w,                             FALSE,  FALSE,
6386     EL_BUG,                             ACTION_MOVING, MV_BIT_LEFT
6387   },
6388   {
6389     Ybug_wB,                            FALSE,  TRUE,
6390     EL_BUG,                             ACTION_MOVING, MV_BIT_LEFT
6391   },
6392   {
6393     Ybug_w_n,                           FALSE,  FALSE,
6394     EL_BUG,                             ACTION_TURNING_FROM_LEFT, MV_BIT_UP
6395   },
6396   {
6397     Ybug_n_e,                           FALSE,  FALSE,
6398     EL_BUG,                             ACTION_TURNING_FROM_UP, MV_BIT_RIGHT
6399   },
6400   {
6401     Ybug_e_s,                           FALSE,  FALSE,
6402     EL_BUG,                             ACTION_TURNING_FROM_RIGHT, MV_BIT_DOWN
6403   },
6404   {
6405     Ybug_s_w,                           FALSE,  FALSE,
6406     EL_BUG,                             ACTION_TURNING_FROM_DOWN, MV_BIT_LEFT
6407   },
6408   {
6409     Ybug_e_n,                           FALSE,  FALSE,
6410     EL_BUG,                             ACTION_TURNING_FROM_RIGHT, MV_BIT_UP
6411   },
6412   {
6413     Ybug_s_e,                           FALSE,  FALSE,
6414     EL_BUG,                             ACTION_TURNING_FROM_DOWN, MV_BIT_RIGHT
6415   },
6416   {
6417     Ybug_w_s,                           FALSE,  FALSE,
6418     EL_BUG,                             ACTION_TURNING_FROM_LEFT, MV_BIT_DOWN
6419   },
6420   {
6421     Ybug_n_w,                           FALSE,  FALSE,
6422     EL_BUG,                             ACTION_TURNING_FROM_UP, MV_BIT_LEFT
6423   },
6424   {
6425     Ybug_stone,                         FALSE,  FALSE,
6426     EL_BUG,                             ACTION_SMASHED_BY_ROCK, -1
6427   },
6428   {
6429     Ybug_spring,                        FALSE,  FALSE,
6430     EL_BUG,                             ACTION_SMASHED_BY_SPRING, -1
6431   },
6432
6433   {
6434     Xtank_1_n,                          TRUE,   FALSE,
6435     EL_SPACESHIP_UP,                    -1, -1
6436   },
6437   {
6438     Xtank_1_e,                          TRUE,   FALSE,
6439     EL_SPACESHIP_RIGHT,                 -1, -1
6440   },
6441   {
6442     Xtank_1_s,                          TRUE,   FALSE,
6443     EL_SPACESHIP_DOWN,                  -1, -1
6444   },
6445   {
6446     Xtank_1_w,                          TRUE,   FALSE,
6447     EL_SPACESHIP_LEFT,                  -1, -1
6448   },
6449   {
6450     Xtank_2_n,                          FALSE,  FALSE,
6451     EL_SPACESHIP_UP,                    -1, -1
6452   },
6453   {
6454     Xtank_2_e,                          FALSE,  FALSE,
6455     EL_SPACESHIP_RIGHT,                 -1, -1
6456   },
6457   {
6458     Xtank_2_s,                          FALSE,  FALSE,
6459     EL_SPACESHIP_DOWN,                  -1, -1
6460   },
6461   {
6462     Xtank_2_w,                          FALSE,  FALSE,
6463     EL_SPACESHIP_LEFT,                  -1, -1
6464   },
6465   {
6466     Ytank_n,                            FALSE,  FALSE,
6467     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_UP
6468   },
6469   {
6470     Ytank_nB,                           FALSE,  TRUE,
6471     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_UP
6472   },
6473   {
6474     Ytank_e,                            FALSE,  FALSE,
6475     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_RIGHT
6476   },
6477   {
6478     Ytank_eB,                           FALSE,  TRUE,
6479     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_RIGHT
6480   },
6481   {
6482     Ytank_s,                            FALSE,  FALSE,
6483     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_DOWN
6484   },
6485   {
6486     Ytank_sB,                           FALSE,  TRUE,
6487     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_DOWN
6488   },
6489   {
6490     Ytank_w,                            FALSE,  FALSE,
6491     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_LEFT
6492   },
6493   {
6494     Ytank_wB,                           FALSE,  TRUE,
6495     EL_SPACESHIP,                       ACTION_MOVING, MV_BIT_LEFT
6496   },
6497   {
6498     Ytank_w_n,                          FALSE,  FALSE,
6499     EL_SPACESHIP,                       ACTION_TURNING_FROM_LEFT, MV_BIT_UP
6500   },
6501   {
6502     Ytank_n_e,                          FALSE,  FALSE,
6503     EL_SPACESHIP,                       ACTION_TURNING_FROM_UP, MV_BIT_RIGHT
6504   },
6505   {
6506     Ytank_e_s,                          FALSE,  FALSE,
6507     EL_SPACESHIP,                       ACTION_TURNING_FROM_RIGHT, MV_BIT_DOWN
6508   },
6509   {
6510     Ytank_s_w,                          FALSE,  FALSE,
6511     EL_SPACESHIP,                       ACTION_TURNING_FROM_DOWN, MV_BIT_LEFT
6512   },
6513   {
6514     Ytank_e_n,                          FALSE,  FALSE,
6515     EL_SPACESHIP,                       ACTION_TURNING_FROM_RIGHT, MV_BIT_UP
6516   },
6517   {
6518     Ytank_s_e,                          FALSE,  FALSE,
6519     EL_SPACESHIP,                       ACTION_TURNING_FROM_DOWN, MV_BIT_RIGHT
6520   },
6521   {
6522     Ytank_w_s,                          FALSE,  FALSE,
6523     EL_SPACESHIP,                       ACTION_TURNING_FROM_LEFT, MV_BIT_DOWN
6524   },
6525   {
6526     Ytank_n_w,                          FALSE,  FALSE,
6527     EL_SPACESHIP,                       ACTION_TURNING_FROM_UP, MV_BIT_LEFT
6528   },
6529   {
6530     Ytank_stone,                        FALSE,  FALSE,
6531     EL_SPACESHIP,                       ACTION_SMASHED_BY_ROCK, -1
6532   },
6533   {
6534     Ytank_spring,                       FALSE,  FALSE,
6535     EL_SPACESHIP,                       ACTION_SMASHED_BY_SPRING, -1
6536   },
6537
6538   {
6539     Xemerald,                           TRUE,   FALSE,
6540     EL_EMERALD,                         -1, -1
6541   },
6542   {
6543     Xemerald_pause,                     FALSE,  FALSE,
6544     EL_EMERALD,                         -1, -1
6545   },
6546   {
6547     Xemerald_fall,                      FALSE,  FALSE,
6548     EL_EMERALD,                         -1, -1
6549   },
6550   {
6551     Xemerald_shine,                     FALSE,  FALSE,
6552     EL_EMERALD,                         ACTION_TWINKLING, -1
6553   },
6554   {
6555     Yemerald_s,                         FALSE,  FALSE,
6556     EL_EMERALD,                         ACTION_FALLING, -1
6557   },
6558   {
6559     Yemerald_sB,                        FALSE,  TRUE,
6560     EL_EMERALD,                         ACTION_FALLING, -1
6561   },
6562   {
6563     Yemerald_e,                         FALSE,  FALSE,
6564     EL_EMERALD,                         ACTION_MOVING, MV_BIT_RIGHT
6565   },
6566   {
6567     Yemerald_eB,                        FALSE,  TRUE,
6568     EL_EMERALD,                         ACTION_MOVING, MV_BIT_RIGHT
6569   },
6570   {
6571     Yemerald_w,                         FALSE,  FALSE,
6572     EL_EMERALD,                         ACTION_MOVING, MV_BIT_LEFT
6573   },
6574   {
6575     Yemerald_wB,                        FALSE,  TRUE,
6576     EL_EMERALD,                         ACTION_MOVING, MV_BIT_LEFT
6577   },
6578   {
6579     Yemerald_blank,                     FALSE,  FALSE,
6580     EL_EMERALD,                         ACTION_COLLECTING, -1
6581   },
6582
6583   {
6584     Xdiamond,                           TRUE,   FALSE,
6585     EL_DIAMOND,                         -1, -1
6586   },
6587   {
6588     Xdiamond_pause,                     FALSE,  FALSE,
6589     EL_DIAMOND,                         -1, -1
6590   },
6591   {
6592     Xdiamond_fall,                      FALSE,  FALSE,
6593     EL_DIAMOND,                         -1, -1
6594   },
6595   {
6596     Xdiamond_shine,                     FALSE,  FALSE,
6597     EL_DIAMOND,                         ACTION_TWINKLING, -1
6598   },
6599   {
6600     Ydiamond_s,                         FALSE,  FALSE,
6601     EL_DIAMOND,                         ACTION_FALLING, -1
6602   },
6603   {
6604     Ydiamond_sB,                        FALSE,  TRUE,
6605     EL_DIAMOND,                         ACTION_FALLING, -1
6606   },
6607   {
6608     Ydiamond_e,                         FALSE,  FALSE,
6609     EL_DIAMOND,                         ACTION_MOVING, MV_BIT_RIGHT
6610   },
6611   {
6612     Ydiamond_eB,                        FALSE,  TRUE,
6613     EL_DIAMOND,                         ACTION_MOVING, MV_BIT_RIGHT
6614   },
6615   {
6616     Ydiamond_w,                         FALSE,  FALSE,
6617     EL_DIAMOND,                         ACTION_MOVING, MV_BIT_LEFT
6618   },
6619   {
6620     Ydiamond_wB,                        FALSE,  TRUE,
6621     EL_DIAMOND,                         ACTION_MOVING, MV_BIT_LEFT
6622   },
6623   {
6624     Ydiamond_blank,                     FALSE,  FALSE,
6625     EL_DIAMOND,                         ACTION_COLLECTING, -1
6626   },
6627   {
6628     Ydiamond_stone,                     FALSE,  FALSE,
6629     EL_DIAMOND,                         ACTION_SMASHED_BY_ROCK, -1
6630   },
6631
6632   {
6633     Xstone,                             TRUE,   FALSE,
6634     EL_ROCK,                            -1, -1
6635   },
6636   {
6637     Xstone_pause,                       FALSE,  FALSE,
6638     EL_ROCK,                            -1, -1
6639   },
6640   {
6641     Xstone_fall,                        FALSE,  FALSE,
6642     EL_ROCK,                            -1, -1
6643   },
6644   {
6645     Ystone_s,                           FALSE,  FALSE,
6646     EL_ROCK,                            ACTION_FALLING, -1
6647   },
6648   {
6649     Ystone_sB,                          FALSE,  TRUE,
6650     EL_ROCK,                            ACTION_FALLING, -1
6651   },
6652   {
6653     Ystone_e,                           FALSE,  FALSE,
6654     EL_ROCK,                            ACTION_MOVING, MV_BIT_RIGHT
6655   },
6656   {
6657     Ystone_eB,                          FALSE,  TRUE,
6658     EL_ROCK,                            ACTION_MOVING, MV_BIT_RIGHT
6659   },
6660   {
6661     Ystone_w,                           FALSE,  FALSE,
6662     EL_ROCK,                            ACTION_MOVING, MV_BIT_LEFT
6663   },
6664   {
6665     Ystone_wB,                          FALSE,  TRUE,
6666     EL_ROCK,                            ACTION_MOVING, MV_BIT_LEFT
6667   },
6668
6669   {
6670     Xbomb,                              TRUE,   FALSE,
6671     EL_BOMB,                            -1, -1
6672   },
6673   {
6674     Xbomb_pause,                        FALSE,  FALSE,
6675     EL_BOMB,                            -1, -1
6676   },
6677   {
6678     Xbomb_fall,                         FALSE,  FALSE,
6679     EL_BOMB,                            -1, -1
6680   },
6681   {
6682     Ybomb_s,                            FALSE,  FALSE,
6683     EL_BOMB,                            ACTION_FALLING, -1
6684   },
6685   {
6686     Ybomb_sB,                           FALSE,  TRUE,
6687     EL_BOMB,                            ACTION_FALLING, -1
6688   },
6689   {
6690     Ybomb_e,                            FALSE,  FALSE,
6691     EL_BOMB,                            ACTION_MOVING, MV_BIT_RIGHT
6692   },
6693   {
6694     Ybomb_eB,                           FALSE,  TRUE,
6695     EL_BOMB,                            ACTION_MOVING, MV_BIT_RIGHT
6696   },
6697   {
6698     Ybomb_w,                            FALSE,  FALSE,
6699     EL_BOMB,                            ACTION_MOVING, MV_BIT_LEFT
6700   },
6701   {
6702     Ybomb_wB,                           FALSE,  TRUE,
6703     EL_BOMB,                            ACTION_MOVING, MV_BIT_LEFT
6704   },
6705   {
6706     Ybomb_blank,                        FALSE,  FALSE,
6707     EL_BOMB,                            ACTION_ACTIVATING, -1
6708   },
6709
6710   {
6711     Xnut,                               TRUE,   FALSE,
6712     EL_NUT,                             -1, -1
6713   },
6714   {
6715     Xnut_pause,                         FALSE,  FALSE,
6716     EL_NUT,                             -1, -1
6717   },
6718   {
6719     Xnut_fall,                          FALSE,  FALSE,
6720     EL_NUT,                             -1, -1
6721   },
6722   {
6723     Ynut_s,                             FALSE,  FALSE,
6724     EL_NUT,                             ACTION_FALLING, -1
6725   },
6726   {
6727     Ynut_sB,                            FALSE,  TRUE,
6728     EL_NUT,                             ACTION_FALLING, -1
6729   },
6730   {
6731     Ynut_e,                             FALSE,  FALSE,
6732     EL_NUT,                             ACTION_MOVING, MV_BIT_RIGHT
6733   },
6734   {
6735     Ynut_eB,                            FALSE,  TRUE,
6736     EL_NUT,                             ACTION_MOVING, MV_BIT_RIGHT
6737   },
6738   {
6739     Ynut_w,                             FALSE,  FALSE,
6740     EL_NUT,                             ACTION_MOVING, MV_BIT_LEFT
6741   },
6742   {
6743     Ynut_wB,                            FALSE,  TRUE,
6744     EL_NUT,                             ACTION_MOVING, MV_BIT_LEFT
6745   },
6746   {
6747     Ynut_stone,                         FALSE,  FALSE,
6748     EL_NUT,                             ACTION_BREAKING, -1
6749   },
6750
6751   {
6752     Xspring,                            TRUE,   FALSE,
6753     EL_SPRING,                          -1, -1
6754   },
6755   {
6756     Xspring_pause,                      FALSE,  FALSE,
6757     EL_SPRING,                          -1, -1
6758   },
6759   {
6760     Xspring_e,                          TRUE,   FALSE,
6761     EL_SPRING_RIGHT,                    -1, -1
6762   },
6763   {
6764     Xspring_w,                          TRUE,   FALSE,
6765     EL_SPRING_LEFT,                     -1, -1
6766   },
6767   {
6768     Xspring_fall,                       FALSE,  FALSE,
6769     EL_SPRING,                          -1, -1
6770   },
6771   {
6772     Yspring_s,                          FALSE,  FALSE,
6773     EL_SPRING,                          ACTION_FALLING, -1
6774   },
6775   {
6776     Yspring_sB,                         FALSE,  TRUE,
6777     EL_SPRING,                          ACTION_FALLING, -1
6778   },
6779   {
6780     Yspring_e,                          FALSE,  FALSE,
6781     EL_SPRING,                          ACTION_MOVING, MV_BIT_RIGHT
6782   },
6783   {
6784     Yspring_eB,                         FALSE,  TRUE,
6785     EL_SPRING,                          ACTION_MOVING, MV_BIT_RIGHT
6786   },
6787   {
6788     Yspring_w,                          FALSE,  FALSE,
6789     EL_SPRING,                          ACTION_MOVING, MV_BIT_LEFT
6790   },
6791   {
6792     Yspring_wB,                         FALSE,  TRUE,
6793     EL_SPRING,                          ACTION_MOVING, MV_BIT_LEFT
6794   },
6795   {
6796     Yspring_alien_e,                    FALSE,  FALSE,
6797     EL_SPRING,                          ACTION_EATING, MV_BIT_RIGHT
6798   },
6799   {
6800     Yspring_alien_eB,                   FALSE,  TRUE,
6801     EL_SPRING,                          ACTION_EATING, MV_BIT_RIGHT
6802   },
6803   {
6804     Yspring_alien_w,                    FALSE,  FALSE,
6805     EL_SPRING,                          ACTION_EATING, MV_BIT_LEFT
6806   },
6807   {
6808     Yspring_alien_wB,                   FALSE,  TRUE,
6809     EL_SPRING,                          ACTION_EATING, MV_BIT_LEFT
6810   },
6811
6812   {
6813     Xpush_emerald_e,                    FALSE,  FALSE,
6814     EL_EMERALD,                         -1, MV_BIT_RIGHT
6815   },
6816   {
6817     Xpush_emerald_w,                    FALSE,  FALSE,
6818     EL_EMERALD,                         -1, MV_BIT_LEFT
6819   },
6820   {
6821     Xpush_diamond_e,                    FALSE,  FALSE,
6822     EL_DIAMOND,                         -1, MV_BIT_RIGHT
6823   },
6824   {
6825     Xpush_diamond_w,                    FALSE,  FALSE,
6826     EL_DIAMOND,                         -1, MV_BIT_LEFT
6827   },
6828   {
6829     Xpush_stone_e,                      FALSE,  FALSE,
6830     EL_ROCK,                            -1, MV_BIT_RIGHT
6831   },
6832   {
6833     Xpush_stone_w,                      FALSE,  FALSE,
6834     EL_ROCK,                            -1, MV_BIT_LEFT
6835   },
6836   {
6837     Xpush_bomb_e,                       FALSE,  FALSE,
6838     EL_BOMB,                            -1, MV_BIT_RIGHT
6839   },
6840   {
6841     Xpush_bomb_w,                       FALSE,  FALSE,
6842     EL_BOMB,                            -1, MV_BIT_LEFT
6843   },
6844   {
6845     Xpush_nut_e,                        FALSE,  FALSE,
6846     EL_NUT,                             -1, MV_BIT_RIGHT
6847   },
6848   {
6849     Xpush_nut_w,                        FALSE,  FALSE,
6850     EL_NUT,                             -1, MV_BIT_LEFT
6851   },
6852   {
6853     Xpush_spring_e,                     FALSE,  FALSE,
6854     EL_SPRING_RIGHT,                    -1, MV_BIT_RIGHT
6855   },
6856   {
6857     Xpush_spring_w,                     FALSE,  FALSE,
6858     EL_SPRING_LEFT,                     -1, MV_BIT_LEFT
6859   },
6860
6861   {
6862     Xdynamite,                          TRUE,   FALSE,
6863     EL_EM_DYNAMITE,                     -1, -1
6864   },
6865   {
6866     Ydynamite_blank,                    FALSE,  FALSE,
6867     EL_EM_DYNAMITE,                     ACTION_COLLECTING, -1
6868   },
6869   {
6870     Xdynamite_1,                        TRUE,   FALSE,
6871     EL_EM_DYNAMITE_ACTIVE,              -1, -1
6872   },
6873   {
6874     Xdynamite_2,                        FALSE,  FALSE,
6875     EL_EM_DYNAMITE_ACTIVE,              -1, -1
6876   },
6877   {
6878     Xdynamite_3,                        FALSE,  FALSE,
6879     EL_EM_DYNAMITE_ACTIVE,              -1, -1
6880   },
6881   {
6882     Xdynamite_4,                        FALSE,  FALSE,
6883     EL_EM_DYNAMITE_ACTIVE,              -1, -1
6884   },
6885
6886   {
6887     Xkey_1,                             TRUE,   FALSE,
6888     EL_EM_KEY_1,                        -1, -1
6889   },
6890   {
6891     Xkey_2,                             TRUE,   FALSE,
6892     EL_EM_KEY_2,                        -1, -1
6893   },
6894   {
6895     Xkey_3,                             TRUE,   FALSE,
6896     EL_EM_KEY_3,                        -1, -1
6897   },
6898   {
6899     Xkey_4,                             TRUE,   FALSE,
6900     EL_EM_KEY_4,                        -1, -1
6901   },
6902   {
6903     Xkey_5,                             TRUE,   FALSE,
6904     EL_EMC_KEY_5,                       -1, -1
6905   },
6906   {
6907     Xkey_6,                             TRUE,   FALSE,
6908     EL_EMC_KEY_6,                       -1, -1
6909   },
6910   {
6911     Xkey_7,                             TRUE,   FALSE,
6912     EL_EMC_KEY_7,                       -1, -1
6913   },
6914   {
6915     Xkey_8,                             TRUE,   FALSE,
6916     EL_EMC_KEY_8,                       -1, -1
6917   },
6918
6919   {
6920     Xdoor_1,                            TRUE,   FALSE,
6921     EL_EM_GATE_1,                       -1, -1
6922   },
6923   {
6924     Xdoor_2,                            TRUE,   FALSE,
6925     EL_EM_GATE_2,                       -1, -1
6926   },
6927   {
6928     Xdoor_3,                            TRUE,   FALSE,
6929     EL_EM_GATE_3,                       -1, -1
6930   },
6931   {
6932     Xdoor_4,                            TRUE,   FALSE,
6933     EL_EM_GATE_4,                       -1, -1
6934   },
6935   {
6936     Xdoor_5,                            TRUE,   FALSE,
6937     EL_EMC_GATE_5,                      -1, -1
6938   },
6939   {
6940     Xdoor_6,                            TRUE,   FALSE,
6941     EL_EMC_GATE_6,                      -1, -1
6942   },
6943   {
6944     Xdoor_7,                            TRUE,   FALSE,
6945     EL_EMC_GATE_7,                      -1, -1
6946   },
6947   {
6948     Xdoor_8,                            TRUE,   FALSE,
6949     EL_EMC_GATE_8,                      -1, -1
6950   },
6951
6952   {
6953     Xfake_door_1,                       TRUE,   FALSE,
6954     EL_EM_GATE_1_GRAY,                  -1, -1
6955   },
6956   {
6957     Xfake_door_2,                       TRUE,   FALSE,
6958     EL_EM_GATE_2_GRAY,                  -1, -1
6959   },
6960   {
6961     Xfake_door_3,                       TRUE,   FALSE,
6962     EL_EM_GATE_3_GRAY,                  -1, -1
6963   },
6964   {
6965     Xfake_door_4,                       TRUE,   FALSE,
6966     EL_EM_GATE_4_GRAY,                  -1, -1
6967   },
6968   {
6969     Xfake_door_5,                       TRUE,   FALSE,
6970     EL_EMC_GATE_5_GRAY,                 -1, -1
6971   },
6972   {
6973     Xfake_door_6,                       TRUE,   FALSE,
6974     EL_EMC_GATE_6_GRAY,                 -1, -1
6975   },
6976   {
6977     Xfake_door_7,                       TRUE,   FALSE,
6978     EL_EMC_GATE_7_GRAY,                 -1, -1
6979   },
6980   {
6981     Xfake_door_8,                       TRUE,   FALSE,
6982     EL_EMC_GATE_8_GRAY,                 -1, -1
6983   },
6984
6985   {
6986     Xballoon,                           TRUE,   FALSE,
6987     EL_BALLOON,                         -1, -1
6988   },
6989   {
6990     Yballoon_n,                         FALSE,  FALSE,
6991     EL_BALLOON,                         ACTION_MOVING, MV_BIT_UP
6992   },
6993   {
6994     Yballoon_nB,                        FALSE,  TRUE,
6995     EL_BALLOON,                         ACTION_MOVING, MV_BIT_UP
6996   },
6997   {
6998     Yballoon_e,                         FALSE,  FALSE,
6999     EL_BALLOON,                         ACTION_MOVING, MV_BIT_RIGHT
7000   },
7001   {
7002     Yballoon_eB,                        FALSE,  TRUE,
7003     EL_BALLOON,                         ACTION_MOVING, MV_BIT_RIGHT
7004   },
7005   {
7006     Yballoon_s,                         FALSE,  FALSE,
7007     EL_BALLOON,                         ACTION_MOVING, MV_BIT_DOWN
7008   },
7009   {
7010     Yballoon_sB,                        FALSE,  TRUE,
7011     EL_BALLOON,                         ACTION_MOVING, MV_BIT_DOWN
7012   },
7013   {
7014     Yballoon_w,                         FALSE,  FALSE,
7015     EL_BALLOON,                         ACTION_MOVING, MV_BIT_LEFT
7016   },
7017   {
7018     Yballoon_wB,                        FALSE,  TRUE,
7019     EL_BALLOON,                         ACTION_MOVING, MV_BIT_LEFT
7020   },
7021
7022   {
7023     Xball_1,                            TRUE,   FALSE,
7024     EL_EMC_MAGIC_BALL,                  -1, -1
7025   },
7026   {
7027     Yball_1,                            FALSE,  FALSE,
7028     EL_EMC_MAGIC_BALL,                  ACTION_ACTIVE, -1
7029   },
7030   {
7031     Xball_2,                            FALSE,  FALSE,
7032     EL_EMC_MAGIC_BALL,                  ACTION_ACTIVE, -1
7033   },
7034   {
7035     Yball_2,                            FALSE,  FALSE,
7036     EL_EMC_MAGIC_BALL,                  ACTION_ACTIVE, -1
7037   },
7038   {
7039     Yball_blank,                        FALSE,  FALSE,
7040     EL_EMC_MAGIC_BALL,                  ACTION_DROPPING, -1
7041   },
7042
7043   {
7044     Xamoeba_1,                          TRUE,   FALSE,
7045     EL_AMOEBA_DRY,                      ACTION_OTHER, -1
7046   },
7047   {
7048     Xamoeba_2,                          FALSE,  FALSE,
7049     EL_AMOEBA_DRY,                      ACTION_OTHER, -1
7050   },
7051   {
7052     Xamoeba_3,                          FALSE,  FALSE,
7053     EL_AMOEBA_DRY,                      ACTION_OTHER, -1
7054   },
7055   {
7056     Xamoeba_4,                          FALSE,  FALSE,
7057     EL_AMOEBA_DRY,                      ACTION_OTHER, -1
7058   },
7059   {
7060     Xamoeba_5,                          TRUE,   FALSE,
7061     EL_AMOEBA_WET,                      ACTION_OTHER, -1
7062   },
7063   {
7064     Xamoeba_6,                          FALSE,  FALSE,
7065     EL_AMOEBA_WET,                      ACTION_OTHER, -1
7066   },
7067   {
7068     Xamoeba_7,                          FALSE,  FALSE,
7069     EL_AMOEBA_WET,                      ACTION_OTHER, -1
7070   },
7071   {
7072     Xamoeba_8,                          FALSE,  FALSE,
7073     EL_AMOEBA_WET,                      ACTION_OTHER, -1
7074   },
7075
7076   {
7077     Xdrip,                              TRUE,   FALSE,
7078     EL_AMOEBA_DROP,                     ACTION_GROWING, -1
7079   },
7080   {
7081     Xdrip_fall,                         FALSE,  FALSE,
7082     EL_AMOEBA_DROP,                     -1, -1
7083   },
7084   {
7085     Xdrip_stretch,                      FALSE,  FALSE,
7086     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
7087   },
7088   {
7089     Xdrip_stretchB,                     FALSE,  TRUE,
7090     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
7091   },
7092   {
7093     Ydrip_1_s,                          FALSE,  FALSE,
7094     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
7095   },
7096   {
7097     Ydrip_1_sB,                         FALSE,  TRUE,
7098     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
7099   },
7100   {
7101     Ydrip_2_s,                          FALSE,  FALSE,
7102     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
7103   },
7104   {
7105     Ydrip_2_sB,                         FALSE,  TRUE,
7106     EL_AMOEBA_DROP,                     ACTION_FALLING, -1
7107   },
7108
7109   {
7110     Xwonderwall,                        TRUE,   FALSE,
7111     EL_MAGIC_WALL,                      -1, -1
7112   },
7113   {
7114     Ywonderwall,                        FALSE,  FALSE,
7115     EL_MAGIC_WALL,                      ACTION_ACTIVE, -1
7116   },
7117
7118   {
7119     Xwheel,                             TRUE,   FALSE,
7120     EL_ROBOT_WHEEL,                     -1, -1
7121   },
7122   {
7123     Ywheel,                             FALSE,  FALSE,
7124     EL_ROBOT_WHEEL,                     ACTION_ACTIVE, -1
7125   },
7126
7127   {
7128     Xswitch,                            TRUE,   FALSE,
7129     EL_EMC_MAGIC_BALL_SWITCH,           -1, -1
7130   },
7131   {
7132     Yswitch,                            FALSE,  FALSE,
7133     EL_EMC_MAGIC_BALL_SWITCH,           ACTION_ACTIVE, -1
7134   },
7135
7136   {
7137     Xbumper,                            TRUE,   FALSE,
7138     EL_EMC_SPRING_BUMPER,               -1, -1
7139   },
7140   {
7141     Ybumper,                            FALSE,  FALSE,
7142     EL_EMC_SPRING_BUMPER,               ACTION_ACTIVE, -1
7143   },
7144
7145   {
7146     Xacid_nw,                           TRUE,   FALSE,
7147     EL_ACID_POOL_TOPLEFT,               -1, -1
7148   },
7149   {
7150     Xacid_ne,                           TRUE,   FALSE,
7151     EL_ACID_POOL_TOPRIGHT,              -1, -1
7152   },
7153   {
7154     Xacid_sw,                           TRUE,   FALSE,
7155     EL_ACID_POOL_BOTTOMLEFT,            -1, -1
7156   },
7157   {
7158     Xacid_s,                            TRUE,   FALSE,
7159     EL_ACID_POOL_BOTTOM,                -1, -1
7160   },
7161   {
7162     Xacid_se,                           TRUE,   FALSE,
7163     EL_ACID_POOL_BOTTOMRIGHT,           -1, -1
7164   },
7165
7166   {
7167     Xfake_blank,                        TRUE,   FALSE,
7168     EL_INVISIBLE_WALL,                  -1, -1
7169   },
7170   {
7171     Yfake_blank,                        FALSE,  FALSE,
7172     EL_INVISIBLE_WALL,                  ACTION_ACTIVE, -1
7173   },
7174
7175   {
7176     Xfake_grass,                        TRUE,   FALSE,
7177     EL_EMC_FAKE_GRASS,                  -1, -1
7178   },
7179   {
7180     Yfake_grass,                        FALSE,  FALSE,
7181     EL_EMC_FAKE_GRASS,                  ACTION_ACTIVE, -1
7182   },
7183
7184   {
7185     Xfake_amoeba,                       TRUE,   FALSE,
7186     EL_EMC_DRIPPER,                     -1, -1
7187   },
7188   {
7189     Yfake_amoeba,                       FALSE,  FALSE,
7190     EL_EMC_DRIPPER,                     ACTION_ACTIVE, -1
7191   },
7192
7193   {
7194     Xlenses,                            TRUE,   FALSE,
7195     EL_EMC_LENSES,                      -1, -1
7196   },
7197
7198   {
7199     Xmagnify,                           TRUE,   FALSE,
7200     EL_EMC_MAGNIFIER,                   -1, -1
7201   },
7202
7203   {
7204     Xsand,                              TRUE,   FALSE,
7205     EL_QUICKSAND_EMPTY,                 -1, -1
7206   },
7207   {
7208     Xsand_stone,                        TRUE,   FALSE,
7209     EL_QUICKSAND_FULL,                  -1, -1
7210   },
7211   {
7212     Xsand_stonein_1,                    FALSE,  TRUE,
7213     EL_ROCK,                            ACTION_FILLING, -1
7214   },
7215   {
7216     Xsand_stonein_2,                    FALSE,  TRUE,
7217     EL_ROCK,                            ACTION_FILLING, -1
7218   },
7219   {
7220     Xsand_stonein_3,                    FALSE,  TRUE,
7221     EL_ROCK,                            ACTION_FILLING, -1
7222   },
7223   {
7224     Xsand_stonein_4,                    FALSE,  TRUE,
7225     EL_ROCK,                            ACTION_FILLING, -1
7226   },
7227   {
7228     Xsand_sandstone_1,                  FALSE,  FALSE,
7229     EL_QUICKSAND_FILLING,               -1, -1
7230   },
7231   {
7232     Xsand_sandstone_2,                  FALSE,  FALSE,
7233     EL_QUICKSAND_FILLING,               -1, -1
7234   },
7235   {
7236     Xsand_sandstone_3,                  FALSE,  FALSE,
7237     EL_QUICKSAND_FILLING,               -1, -1
7238   },
7239   {
7240     Xsand_sandstone_4,                  FALSE,  FALSE,
7241     EL_QUICKSAND_FILLING,               -1, -1
7242   },
7243   {
7244     Xsand_stonesand_1,                  FALSE,  FALSE,
7245     EL_QUICKSAND_EMPTYING,              -1, -1
7246   },
7247   {
7248     Xsand_stonesand_2,                  FALSE,  FALSE,
7249     EL_QUICKSAND_EMPTYING,              -1, -1
7250   },
7251   {
7252     Xsand_stonesand_3,                  FALSE,  FALSE,
7253     EL_QUICKSAND_EMPTYING,              -1, -1
7254   },
7255   {
7256     Xsand_stonesand_4,                  FALSE,  FALSE,
7257     EL_QUICKSAND_EMPTYING,              -1, -1
7258   },
7259   {
7260     Xsand_stoneout_1,                   FALSE,  FALSE,
7261     EL_ROCK,                            ACTION_EMPTYING, -1
7262   },
7263   {
7264     Xsand_stoneout_2,                   FALSE,  FALSE,
7265     EL_ROCK,                            ACTION_EMPTYING, -1
7266   },
7267   {
7268     Xsand_stonesand_quickout_1,         FALSE,  FALSE,
7269     EL_QUICKSAND_EMPTYING,              -1, -1
7270   },
7271   {
7272     Xsand_stonesand_quickout_2,         FALSE,  FALSE,
7273     EL_QUICKSAND_EMPTYING,              -1, -1
7274   },
7275
7276   {
7277     Xslide_ns,                          TRUE,   FALSE,
7278     EL_EXPANDABLE_WALL_VERTICAL,        -1, -1
7279   },
7280   {
7281     Yslide_ns_blank,                    FALSE,  FALSE,
7282     EL_EXPANDABLE_WALL_VERTICAL,        ACTION_GROWING, -1
7283   },
7284   {
7285     Xslide_ew,                          TRUE,   FALSE,
7286     EL_EXPANDABLE_WALL_HORIZONTAL,      -1, -1
7287   },
7288   {
7289     Yslide_ew_blank,                    FALSE,  FALSE,
7290     EL_EXPANDABLE_WALL_HORIZONTAL,      ACTION_GROWING, -1
7291   },
7292
7293   {
7294     Xwind_n,                            TRUE,   FALSE,
7295     EL_BALLOON_SWITCH_UP,               -1, -1
7296   },
7297   {
7298     Xwind_e,                            TRUE,   FALSE,
7299     EL_BALLOON_SWITCH_RIGHT,            -1, -1
7300   },
7301   {
7302     Xwind_s,                            TRUE,   FALSE,
7303     EL_BALLOON_SWITCH_DOWN,             -1, -1
7304   },
7305   {
7306     Xwind_w,                            TRUE,   FALSE,
7307     EL_BALLOON_SWITCH_LEFT,             -1, -1
7308   },
7309   {
7310     Xwind_any,                          TRUE,   FALSE,
7311     EL_BALLOON_SWITCH_ANY,              -1, -1
7312   },
7313   {
7314     Xwind_stop,                         TRUE,   FALSE,
7315     EL_BALLOON_SWITCH_NONE,             -1, -1
7316   },
7317
7318   {
7319     Xexit,                              TRUE,   FALSE,
7320     EL_EM_EXIT_CLOSED,                  -1, -1
7321   },
7322   {
7323     Xexit_1,                            TRUE,   FALSE,
7324     EL_EM_EXIT_OPEN,                    -1, -1
7325   },
7326   {
7327     Xexit_2,                            FALSE,  FALSE,
7328     EL_EM_EXIT_OPEN,                    -1, -1
7329   },
7330   {
7331     Xexit_3,                            FALSE,  FALSE,
7332     EL_EM_EXIT_OPEN,                    -1, -1
7333   },
7334
7335   {
7336     Xpause,                             FALSE,  FALSE,
7337     EL_EMPTY,                           -1, -1
7338   },
7339
7340   {
7341     Xwall_1,                            TRUE,   FALSE,
7342     EL_WALL,                            -1, -1
7343   },
7344   {
7345     Xwall_2,                            TRUE,   FALSE,
7346     EL_EMC_WALL_14,                     -1, -1
7347   },
7348   {
7349     Xwall_3,                            TRUE,   FALSE,
7350     EL_EMC_WALL_15,                     -1, -1
7351   },
7352   {
7353     Xwall_4,                            TRUE,   FALSE,
7354     EL_EMC_WALL_16,                     -1, -1
7355   },
7356
7357   {
7358     Xroundwall_1,                       TRUE,   FALSE,
7359     EL_WALL_SLIPPERY,                   -1, -1
7360   },
7361   {
7362     Xroundwall_2,                       TRUE,   FALSE,
7363     EL_EMC_WALL_SLIPPERY_2,             -1, -1
7364   },
7365   {
7366     Xroundwall_3,                       TRUE,   FALSE,
7367     EL_EMC_WALL_SLIPPERY_3,             -1, -1
7368   },
7369   {
7370     Xroundwall_4,                       TRUE,   FALSE,
7371     EL_EMC_WALL_SLIPPERY_4,             -1, -1
7372   },
7373
7374   {
7375     Xsteel_1,                           TRUE,   FALSE,
7376     EL_STEELWALL,                       -1, -1
7377   },
7378   {
7379     Xsteel_2,                           TRUE,   FALSE,
7380     EL_EMC_STEELWALL_2,                 -1, -1
7381   },
7382   {
7383     Xsteel_3,                           TRUE,   FALSE,
7384     EL_EMC_STEELWALL_3,                 -1, -1
7385   },
7386   {
7387     Xsteel_4,                           TRUE,   FALSE,
7388     EL_EMC_STEELWALL_4,                 -1, -1
7389   },
7390
7391   {
7392     Xdecor_1,                           TRUE,   FALSE,
7393     EL_EMC_WALL_8,                      -1, -1
7394   },
7395   {
7396     Xdecor_2,                           TRUE,   FALSE,
7397     EL_EMC_WALL_6,                      -1, -1
7398   },
7399   {
7400     Xdecor_3,                           TRUE,   FALSE,
7401     EL_EMC_WALL_4,                      -1, -1
7402   },
7403   {
7404     Xdecor_4,                           TRUE,   FALSE,
7405     EL_EMC_WALL_7,                      -1, -1
7406   },
7407   {
7408     Xdecor_5,                           TRUE,   FALSE,
7409     EL_EMC_WALL_5,                      -1, -1
7410   },
7411   {
7412     Xdecor_6,                           TRUE,   FALSE,
7413     EL_EMC_WALL_9,                      -1, -1
7414   },
7415   {
7416     Xdecor_7,                           TRUE,   FALSE,
7417     EL_EMC_WALL_10,                     -1, -1
7418   },
7419   {
7420     Xdecor_8,                           TRUE,   FALSE,
7421     EL_EMC_WALL_1,                      -1, -1
7422   },
7423   {
7424     Xdecor_9,                           TRUE,   FALSE,
7425     EL_EMC_WALL_2,                      -1, -1
7426   },
7427   {
7428     Xdecor_10,                          TRUE,   FALSE,
7429     EL_EMC_WALL_3,                      -1, -1
7430   },
7431   {
7432     Xdecor_11,                          TRUE,   FALSE,
7433     EL_EMC_WALL_11,                     -1, -1
7434   },
7435   {
7436     Xdecor_12,                          TRUE,   FALSE,
7437     EL_EMC_WALL_12,                     -1, -1
7438   },
7439
7440   {
7441     Xalpha_0,                           TRUE,   FALSE,
7442     EL_CHAR('0'),                       -1, -1
7443   },
7444   {
7445     Xalpha_1,                           TRUE,   FALSE,
7446     EL_CHAR('1'),                       -1, -1
7447   },
7448   {
7449     Xalpha_2,                           TRUE,   FALSE,
7450     EL_CHAR('2'),                       -1, -1
7451   },
7452   {
7453     Xalpha_3,                           TRUE,   FALSE,
7454     EL_CHAR('3'),                       -1, -1
7455   },
7456   {
7457     Xalpha_4,                           TRUE,   FALSE,
7458     EL_CHAR('4'),                       -1, -1
7459   },
7460   {
7461     Xalpha_5,                           TRUE,   FALSE,
7462     EL_CHAR('5'),                       -1, -1
7463   },
7464   {
7465     Xalpha_6,                           TRUE,   FALSE,
7466     EL_CHAR('6'),                       -1, -1
7467   },
7468   {
7469     Xalpha_7,                           TRUE,   FALSE,
7470     EL_CHAR('7'),                       -1, -1
7471   },
7472   {
7473     Xalpha_8,                           TRUE,   FALSE,
7474     EL_CHAR('8'),                       -1, -1
7475   },
7476   {
7477     Xalpha_9,                           TRUE,   FALSE,
7478     EL_CHAR('9'),                       -1, -1
7479   },
7480   {
7481     Xalpha_excla,                       TRUE,   FALSE,
7482     EL_CHAR('!'),                       -1, -1
7483   },
7484   {
7485     Xalpha_apost,                       TRUE,   FALSE,
7486     EL_CHAR('\''),                      -1, -1
7487   },
7488   {
7489     Xalpha_comma,                       TRUE,   FALSE,
7490     EL_CHAR(','),                       -1, -1
7491   },
7492   {
7493     Xalpha_minus,                       TRUE,   FALSE,
7494     EL_CHAR('-'),                       -1, -1
7495   },
7496   {
7497     Xalpha_perio,                       TRUE,   FALSE,
7498     EL_CHAR('.'),                       -1, -1
7499   },
7500   {
7501     Xalpha_colon,                       TRUE,   FALSE,
7502     EL_CHAR(':'),                       -1, -1
7503   },
7504   {
7505     Xalpha_quest,                       TRUE,   FALSE,
7506     EL_CHAR('?'),                       -1, -1
7507   },
7508   {
7509     Xalpha_a,                           TRUE,   FALSE,
7510     EL_CHAR('A'),                       -1, -1
7511   },
7512   {
7513     Xalpha_b,                           TRUE,   FALSE,
7514     EL_CHAR('B'),                       -1, -1
7515   },
7516   {
7517     Xalpha_c,                           TRUE,   FALSE,
7518     EL_CHAR('C'),                       -1, -1
7519   },
7520   {
7521     Xalpha_d,                           TRUE,   FALSE,
7522     EL_CHAR('D'),                       -1, -1
7523   },
7524   {
7525     Xalpha_e,                           TRUE,   FALSE,
7526     EL_CHAR('E'),                       -1, -1
7527   },
7528   {
7529     Xalpha_f,                           TRUE,   FALSE,
7530     EL_CHAR('F'),                       -1, -1
7531   },
7532   {
7533     Xalpha_g,                           TRUE,   FALSE,
7534     EL_CHAR('G'),                       -1, -1
7535   },
7536   {
7537     Xalpha_h,                           TRUE,   FALSE,
7538     EL_CHAR('H'),                       -1, -1
7539   },
7540   {
7541     Xalpha_i,                           TRUE,   FALSE,
7542     EL_CHAR('I'),                       -1, -1
7543   },
7544   {
7545     Xalpha_j,                           TRUE,   FALSE,
7546     EL_CHAR('J'),                       -1, -1
7547   },
7548   {
7549     Xalpha_k,                           TRUE,   FALSE,
7550     EL_CHAR('K'),                       -1, -1
7551   },
7552   {
7553     Xalpha_l,                           TRUE,   FALSE,
7554     EL_CHAR('L'),                       -1, -1
7555   },
7556   {
7557     Xalpha_m,                           TRUE,   FALSE,
7558     EL_CHAR('M'),                       -1, -1
7559   },
7560   {
7561     Xalpha_n,                           TRUE,   FALSE,
7562     EL_CHAR('N'),                       -1, -1
7563   },
7564   {
7565     Xalpha_o,                           TRUE,   FALSE,
7566     EL_CHAR('O'),                       -1, -1
7567   },
7568   {
7569     Xalpha_p,                           TRUE,   FALSE,
7570     EL_CHAR('P'),                       -1, -1
7571   },
7572   {
7573     Xalpha_q,                           TRUE,   FALSE,
7574     EL_CHAR('Q'),                       -1, -1
7575   },
7576   {
7577     Xalpha_r,                           TRUE,   FALSE,
7578     EL_CHAR('R'),                       -1, -1
7579   },
7580   {
7581     Xalpha_s,                           TRUE,   FALSE,
7582     EL_CHAR('S'),                       -1, -1
7583   },
7584   {
7585     Xalpha_t,                           TRUE,   FALSE,
7586     EL_CHAR('T'),                       -1, -1
7587   },
7588   {
7589     Xalpha_u,                           TRUE,   FALSE,
7590     EL_CHAR('U'),                       -1, -1
7591   },
7592   {
7593     Xalpha_v,                           TRUE,   FALSE,
7594     EL_CHAR('V'),                       -1, -1
7595   },
7596   {
7597     Xalpha_w,                           TRUE,   FALSE,
7598     EL_CHAR('W'),                       -1, -1
7599   },
7600   {
7601     Xalpha_x,                           TRUE,   FALSE,
7602     EL_CHAR('X'),                       -1, -1
7603   },
7604   {
7605     Xalpha_y,                           TRUE,   FALSE,
7606     EL_CHAR('Y'),                       -1, -1
7607   },
7608   {
7609     Xalpha_z,                           TRUE,   FALSE,
7610     EL_CHAR('Z'),                       -1, -1
7611   },
7612   {
7613     Xalpha_arrow_e,                     TRUE,   FALSE,
7614     EL_CHAR('>'),                       -1, -1
7615   },
7616   {
7617     Xalpha_arrow_w,                     TRUE,   FALSE,
7618     EL_CHAR('<'),                       -1, -1
7619   },
7620   {
7621     Xalpha_copyr,                       TRUE,   FALSE,
7622     EL_CHAR(CHAR_BYTE_COPYRIGHT),       -1, -1
7623   },
7624
7625   {
7626     Ykey_1_blank,                       FALSE,  FALSE,
7627     EL_EM_KEY_1,                        ACTION_COLLECTING, -1
7628   },
7629   {
7630     Ykey_2_blank,                       FALSE,  FALSE,
7631     EL_EM_KEY_2,                        ACTION_COLLECTING, -1
7632   },
7633   {
7634     Ykey_3_blank,                       FALSE,  FALSE,
7635     EL_EM_KEY_3,                        ACTION_COLLECTING, -1
7636   },
7637   {
7638     Ykey_4_blank,                       FALSE,  FALSE,
7639     EL_EM_KEY_4,                        ACTION_COLLECTING, -1
7640   },
7641   {
7642     Ykey_5_blank,                       FALSE,  FALSE,
7643     EL_EMC_KEY_5,                       ACTION_COLLECTING, -1
7644   },
7645   {
7646     Ykey_6_blank,                       FALSE,  FALSE,
7647     EL_EMC_KEY_6,                       ACTION_COLLECTING, -1
7648   },
7649   {
7650     Ykey_7_blank,                       FALSE,  FALSE,
7651     EL_EMC_KEY_7,                       ACTION_COLLECTING, -1
7652   },
7653   {
7654     Ykey_8_blank,                       FALSE,  FALSE,
7655     EL_EMC_KEY_8,                       ACTION_COLLECTING, -1
7656   },
7657   {
7658     Ylenses_blank,                      FALSE,  FALSE,
7659     EL_EMC_LENSES,                      ACTION_COLLECTING, -1
7660   },
7661   {
7662     Ymagnify_blank,                     FALSE,  FALSE,
7663     EL_EMC_MAGNIFIER,                   ACTION_COLLECTING, -1
7664   },
7665   {
7666     Ygrass_blank,                       FALSE,  FALSE,
7667     EL_EMC_GRASS,                       ACTION_SNAPPING, -1
7668   },
7669   {
7670     Ydirt_blank,                        FALSE,  FALSE,
7671     EL_SAND,                            ACTION_SNAPPING, -1
7672   },
7673
7674   {
7675     -1,                                 FALSE,  FALSE,
7676     -1,                                 -1, -1
7677   }
7678 };
7679
7680 static struct Mapping_EM_to_RND_player
7681 {
7682   int action_em;
7683   int player_nr;
7684
7685   int element_rnd;
7686   int action;
7687   int direction;
7688 }
7689 em_player_mapping_list[MAX_PLAYERS * PLY_MAX + 1] =
7690 {
7691   {
7692     PLY_walk_n,                         0,
7693     EL_PLAYER_1,                        ACTION_MOVING, MV_BIT_UP,
7694   },
7695   {
7696     PLY_walk_e,                         0,
7697     EL_PLAYER_1,                        ACTION_MOVING, MV_BIT_RIGHT,
7698   },
7699   {
7700     PLY_walk_s,                         0,
7701     EL_PLAYER_1,                        ACTION_MOVING, MV_BIT_DOWN,
7702   },
7703   {
7704     PLY_walk_w,                         0,
7705     EL_PLAYER_1,                        ACTION_MOVING, MV_BIT_LEFT,
7706   },
7707   {
7708     PLY_push_n,                         0,
7709     EL_PLAYER_1,                        ACTION_PUSHING, MV_BIT_UP,
7710   },
7711   {
7712     PLY_push_e,                         0,
7713     EL_PLAYER_1,                        ACTION_PUSHING, MV_BIT_RIGHT,
7714   },
7715   {
7716     PLY_push_s,                         0,
7717     EL_PLAYER_1,                        ACTION_PUSHING, MV_BIT_DOWN,
7718   },
7719   {
7720     PLY_push_w,                         0,
7721     EL_PLAYER_1,                        ACTION_PUSHING, MV_BIT_LEFT,
7722   },
7723   {
7724     PLY_shoot_n,                        0,
7725     EL_PLAYER_1,                        ACTION_SNAPPING, MV_BIT_UP,
7726   },
7727   {
7728     PLY_shoot_e,                        0,
7729     EL_PLAYER_1,                        ACTION_SNAPPING, MV_BIT_RIGHT,
7730   },
7731   {
7732     PLY_shoot_s,                        0,
7733     EL_PLAYER_1,                        ACTION_SNAPPING, MV_BIT_DOWN,
7734   },
7735   {
7736     PLY_shoot_w,                        0,
7737     EL_PLAYER_1,                        ACTION_SNAPPING, MV_BIT_LEFT,
7738   },
7739   {
7740     PLY_walk_n,                         1,
7741     EL_PLAYER_2,                        ACTION_MOVING, MV_BIT_UP,
7742   },
7743   {
7744     PLY_walk_e,                         1,
7745     EL_PLAYER_2,                        ACTION_MOVING, MV_BIT_RIGHT,
7746   },
7747   {
7748     PLY_walk_s,                         1,
7749     EL_PLAYER_2,                        ACTION_MOVING, MV_BIT_DOWN,
7750   },
7751   {
7752     PLY_walk_w,                         1,
7753     EL_PLAYER_2,                        ACTION_MOVING, MV_BIT_LEFT,
7754   },
7755   {
7756     PLY_push_n,                         1,
7757     EL_PLAYER_2,                        ACTION_PUSHING, MV_BIT_UP,
7758   },
7759   {
7760     PLY_push_e,                         1,
7761     EL_PLAYER_2,                        ACTION_PUSHING, MV_BIT_RIGHT,
7762   },
7763   {
7764     PLY_push_s,                         1,
7765     EL_PLAYER_2,                        ACTION_PUSHING, MV_BIT_DOWN,
7766   },
7767   {
7768     PLY_push_w,                         1,
7769     EL_PLAYER_2,                        ACTION_PUSHING, MV_BIT_LEFT,
7770   },
7771   {
7772     PLY_shoot_n,                        1,
7773     EL_PLAYER_2,                        ACTION_SNAPPING, MV_BIT_UP,
7774   },
7775   {
7776     PLY_shoot_e,                        1,
7777     EL_PLAYER_2,                        ACTION_SNAPPING, MV_BIT_RIGHT,
7778   },
7779   {
7780     PLY_shoot_s,                        1,
7781     EL_PLAYER_2,                        ACTION_SNAPPING, MV_BIT_DOWN,
7782   },
7783   {
7784     PLY_shoot_w,                        1,
7785     EL_PLAYER_2,                        ACTION_SNAPPING, MV_BIT_LEFT,
7786   },
7787   {
7788     PLY_still,                          0,
7789     EL_PLAYER_1,                        ACTION_DEFAULT, -1,
7790   },
7791   {
7792     PLY_still,                          1,
7793     EL_PLAYER_2,                        ACTION_DEFAULT, -1,
7794   },
7795   {
7796     PLY_walk_n,                         2,
7797     EL_PLAYER_3,                        ACTION_MOVING, MV_BIT_UP,
7798   },
7799   {
7800     PLY_walk_e,                         2,
7801     EL_PLAYER_3,                        ACTION_MOVING, MV_BIT_RIGHT,
7802   },
7803   {
7804     PLY_walk_s,                         2,
7805     EL_PLAYER_3,                        ACTION_MOVING, MV_BIT_DOWN,
7806   },
7807   {
7808     PLY_walk_w,                         2,
7809     EL_PLAYER_3,                        ACTION_MOVING, MV_BIT_LEFT,
7810   },
7811   {
7812     PLY_push_n,                         2,
7813     EL_PLAYER_3,                        ACTION_PUSHING, MV_BIT_UP,
7814   },
7815   {
7816     PLY_push_e,                         2,
7817     EL_PLAYER_3,                        ACTION_PUSHING, MV_BIT_RIGHT,
7818   },
7819   {
7820     PLY_push_s,                         2,
7821     EL_PLAYER_3,                        ACTION_PUSHING, MV_BIT_DOWN,
7822   },
7823   {
7824     PLY_push_w,                         2,
7825     EL_PLAYER_3,                        ACTION_PUSHING, MV_BIT_LEFT,
7826   },
7827   {
7828     PLY_shoot_n,                        2,
7829     EL_PLAYER_3,                        ACTION_SNAPPING, MV_BIT_UP,
7830   },
7831   {
7832     PLY_shoot_e,                        2,
7833     EL_PLAYER_3,                        ACTION_SNAPPING, MV_BIT_RIGHT,
7834   },
7835   {
7836     PLY_shoot_s,                        2,
7837     EL_PLAYER_3,                        ACTION_SNAPPING, MV_BIT_DOWN,
7838   },
7839   {
7840     PLY_shoot_w,                        2,
7841     EL_PLAYER_3,                        ACTION_SNAPPING, MV_BIT_LEFT,
7842   },
7843   {
7844     PLY_walk_n,                         3,
7845     EL_PLAYER_4,                        ACTION_MOVING, MV_BIT_UP,
7846   },
7847   {
7848     PLY_walk_e,                         3,
7849     EL_PLAYER_4,                        ACTION_MOVING, MV_BIT_RIGHT,
7850   },
7851   {
7852     PLY_walk_s,                         3,
7853     EL_PLAYER_4,                        ACTION_MOVING, MV_BIT_DOWN,
7854   },
7855   {
7856     PLY_walk_w,                         3,
7857     EL_PLAYER_4,                        ACTION_MOVING, MV_BIT_LEFT,
7858   },
7859   {
7860     PLY_push_n,                         3,
7861     EL_PLAYER_4,                        ACTION_PUSHING, MV_BIT_UP,
7862   },
7863   {
7864     PLY_push_e,                         3,
7865     EL_PLAYER_4,                        ACTION_PUSHING, MV_BIT_RIGHT,
7866   },
7867   {
7868     PLY_push_s,                         3,
7869     EL_PLAYER_4,                        ACTION_PUSHING, MV_BIT_DOWN,
7870   },
7871   {
7872     PLY_push_w,                         3,
7873     EL_PLAYER_4,                        ACTION_PUSHING, MV_BIT_LEFT,
7874   },
7875   {
7876     PLY_shoot_n,                        3,
7877     EL_PLAYER_4,                        ACTION_SNAPPING, MV_BIT_UP,
7878   },
7879   {
7880     PLY_shoot_e,                        3,
7881     EL_PLAYER_4,                        ACTION_SNAPPING, MV_BIT_RIGHT,
7882   },
7883   {
7884     PLY_shoot_s,                        3,
7885     EL_PLAYER_4,                        ACTION_SNAPPING, MV_BIT_DOWN,
7886   },
7887   {
7888     PLY_shoot_w,                        3,
7889     EL_PLAYER_4,                        ACTION_SNAPPING, MV_BIT_LEFT,
7890   },
7891   {
7892     PLY_still,                          2,
7893     EL_PLAYER_3,                        ACTION_DEFAULT, -1,
7894   },
7895   {
7896     PLY_still,                          3,
7897     EL_PLAYER_4,                        ACTION_DEFAULT, -1,
7898   },
7899
7900   {
7901     -1,                                 -1,
7902     -1,                                 -1, -1
7903   }
7904 };
7905
7906 int map_element_RND_to_EM_cave(int element_rnd)
7907 {
7908   static unsigned short mapping_RND_to_EM[NUM_FILE_ELEMENTS];
7909   static boolean mapping_initialized = FALSE;
7910
7911   if (!mapping_initialized)
7912   {
7913     int i;
7914
7915     // return "Xalpha_quest" for all undefined elements in mapping array
7916     for (i = 0; i < NUM_FILE_ELEMENTS; i++)
7917       mapping_RND_to_EM[i] = Xalpha_quest;
7918
7919     for (i = 0; em_object_mapping_list[i].element_em != -1; i++)
7920       if (em_object_mapping_list[i].is_rnd_to_em_mapping)
7921         mapping_RND_to_EM[em_object_mapping_list[i].element_rnd] =
7922           em_object_mapping_list[i].element_em;
7923
7924     mapping_initialized = TRUE;
7925   }
7926
7927   if (element_rnd < 0 || element_rnd >= NUM_FILE_ELEMENTS)
7928   {
7929     Warn("invalid RND level element %d", element_rnd);
7930
7931     return EL_UNKNOWN;
7932   }
7933
7934   return map_em_element_X_to_C(mapping_RND_to_EM[element_rnd]);
7935 }
7936
7937 int map_element_EM_to_RND_cave(int element_em_cave)
7938 {
7939   static unsigned short mapping_EM_to_RND[GAME_TILE_MAX];
7940   static boolean mapping_initialized = FALSE;
7941
7942   if (!mapping_initialized)
7943   {
7944     int i;
7945
7946     // return "EL_UNKNOWN" for all undefined elements in mapping array
7947     for (i = 0; i < GAME_TILE_MAX; i++)
7948       mapping_EM_to_RND[i] = EL_UNKNOWN;
7949
7950     for (i = 0; em_object_mapping_list[i].element_em != -1; i++)
7951       mapping_EM_to_RND[em_object_mapping_list[i].element_em] =
7952         em_object_mapping_list[i].element_rnd;
7953
7954     mapping_initialized = TRUE;
7955   }
7956
7957   if (element_em_cave < 0 || element_em_cave >= CAVE_TILE_MAX)
7958   {
7959     Warn("invalid EM cave element %d", element_em_cave);
7960
7961     return EL_UNKNOWN;
7962   }
7963
7964   return mapping_EM_to_RND[map_em_element_C_to_X(element_em_cave)];
7965 }
7966
7967 int map_element_EM_to_RND_game(int element_em_game)
7968 {
7969   static unsigned short mapping_EM_to_RND[GAME_TILE_MAX];
7970   static boolean mapping_initialized = FALSE;
7971
7972   if (!mapping_initialized)
7973   {
7974     int i;
7975
7976     // return "EL_UNKNOWN" for all undefined elements in mapping array
7977     for (i = 0; i < GAME_TILE_MAX; i++)
7978       mapping_EM_to_RND[i] = EL_UNKNOWN;
7979
7980     for (i = 0; em_object_mapping_list[i].element_em != -1; i++)
7981       mapping_EM_to_RND[em_object_mapping_list[i].element_em] =
7982         em_object_mapping_list[i].element_rnd;
7983
7984     mapping_initialized = TRUE;
7985   }
7986
7987   if (element_em_game < 0 || element_em_game >= GAME_TILE_MAX)
7988   {
7989     Warn("invalid EM game element %d", element_em_game);
7990
7991     return EL_UNKNOWN;
7992   }
7993
7994   return mapping_EM_to_RND[element_em_game];
7995 }
7996
7997 void map_android_clone_elements_RND_to_EM(struct LevelInfo *level)
7998 {
7999   struct LevelInfo_EM *level_em = level->native_em_level;
8000   struct CAVE *cav = level_em->cav;
8001   int i, j;
8002
8003   for (i = 0; i < GAME_TILE_MAX; i++)
8004     cav->android_array[i] = Cblank;
8005
8006   for (i = 0; i < level->num_android_clone_elements; i++)
8007   {
8008     int element_rnd = level->android_clone_element[i];
8009     int element_em_cave = map_element_RND_to_EM_cave(element_rnd);
8010
8011     for (j = 0; em_object_mapping_list[j].element_em != -1; j++)
8012       if (em_object_mapping_list[j].element_rnd == element_rnd)
8013         cav->android_array[em_object_mapping_list[j].element_em] =
8014           element_em_cave;
8015   }
8016 }
8017
8018 void map_android_clone_elements_EM_to_RND(struct LevelInfo *level)
8019 {
8020   struct LevelInfo_EM *level_em = level->native_em_level;
8021   struct CAVE *cav = level_em->cav;
8022   int i, j;
8023
8024   level->num_android_clone_elements = 0;
8025
8026   for (i = 0; i < GAME_TILE_MAX; i++)
8027   {
8028     int element_em_cave = cav->android_array[i];
8029     int element_rnd;
8030     boolean element_found = FALSE;
8031
8032     if (element_em_cave == Cblank)
8033       continue;
8034
8035     element_rnd = map_element_EM_to_RND_cave(element_em_cave);
8036
8037     for (j = 0; j < level->num_android_clone_elements; j++)
8038       if (level->android_clone_element[j] == element_rnd)
8039         element_found = TRUE;
8040
8041     if (!element_found)
8042     {
8043       level->android_clone_element[level->num_android_clone_elements++] =
8044         element_rnd;
8045
8046       if (level->num_android_clone_elements == MAX_ANDROID_ELEMENTS)
8047         break;
8048     }
8049   }
8050
8051   if (level->num_android_clone_elements == 0)
8052   {
8053     level->num_android_clone_elements = 1;
8054     level->android_clone_element[0] = EL_EMPTY;
8055   }
8056 }
8057
8058 int map_direction_RND_to_EM(int direction)
8059 {
8060   return (direction == MV_UP    ? 0 :
8061           direction == MV_RIGHT ? 1 :
8062           direction == MV_DOWN  ? 2 :
8063           direction == MV_LEFT  ? 3 :
8064           -1);
8065 }
8066
8067 int map_direction_EM_to_RND(int direction)
8068 {
8069   return (direction == 0 ? MV_UP    :
8070           direction == 1 ? MV_RIGHT :
8071           direction == 2 ? MV_DOWN  :
8072           direction == 3 ? MV_LEFT  :
8073           MV_NONE);
8074 }
8075
8076 int map_element_RND_to_SP(int element_rnd)
8077 {
8078   int element_sp = 0x20;        // map unknown elements to yellow "hardware"
8079
8080   if (element_rnd >= EL_SP_START &&
8081       element_rnd <= EL_SP_END)
8082     element_sp = element_rnd - EL_SP_START;
8083   else if (element_rnd == EL_EMPTY_SPACE)
8084     element_sp = 0x00;
8085   else if (element_rnd == EL_INVISIBLE_WALL)
8086     element_sp = 0x28;
8087
8088   return element_sp;
8089 }
8090
8091 int map_element_SP_to_RND(int element_sp)
8092 {
8093   int element_rnd = EL_UNKNOWN;
8094
8095   if (element_sp >= 0x00 &&
8096       element_sp <= 0x27)
8097     element_rnd = EL_SP_START + element_sp;
8098   else if (element_sp == 0x28)
8099     element_rnd = EL_INVISIBLE_WALL;
8100
8101   return element_rnd;
8102 }
8103
8104 int map_action_SP_to_RND(int action_sp)
8105 {
8106   switch (action_sp)
8107   {
8108     case actActive:             return ACTION_ACTIVE;
8109     case actImpact:             return ACTION_IMPACT;
8110     case actExploding:          return ACTION_EXPLODING;
8111     case actDigging:            return ACTION_DIGGING;
8112     case actSnapping:           return ACTION_SNAPPING;
8113     case actCollecting:         return ACTION_COLLECTING;
8114     case actPassing:            return ACTION_PASSING;
8115     case actPushing:            return ACTION_PUSHING;
8116     case actDropping:           return ACTION_DROPPING;
8117
8118     default:                    return ACTION_DEFAULT;
8119   }
8120 }
8121
8122 int map_element_RND_to_MM(int element_rnd)
8123 {
8124   return (element_rnd >= EL_MM_START_1 &&
8125           element_rnd <= EL_MM_END_1 ?
8126           EL_MM_START_1_NATIVE + element_rnd - EL_MM_START_1 :
8127
8128           element_rnd >= EL_MM_START_2 &&
8129           element_rnd <= EL_MM_END_2 ?
8130           EL_MM_START_2_NATIVE + element_rnd - EL_MM_START_2 :
8131
8132           element_rnd >= EL_MM_START_3 &&
8133           element_rnd <= EL_MM_END_3 ?
8134           EL_MM_START_3_NATIVE + element_rnd - EL_MM_START_3 :
8135
8136           element_rnd >= EL_CHAR_START &&
8137           element_rnd <= EL_CHAR_END ?
8138           EL_MM_CHAR_START_NATIVE + element_rnd - EL_CHAR_START :
8139
8140           element_rnd >= EL_MM_RUNTIME_START &&
8141           element_rnd <= EL_MM_RUNTIME_END ?
8142           EL_MM_RUNTIME_START_NATIVE + element_rnd - EL_MM_RUNTIME_START :
8143
8144           EL_MM_EMPTY_NATIVE);
8145 }
8146
8147 int map_element_MM_to_RND(int element_mm)
8148 {
8149   return (element_mm == EL_MM_EMPTY_NATIVE ||
8150           element_mm == EL_DF_EMPTY_NATIVE ?
8151           EL_EMPTY :
8152
8153           element_mm >= EL_MM_START_1_NATIVE &&
8154           element_mm <= EL_MM_END_1_NATIVE ?
8155           EL_MM_START_1 + element_mm - EL_MM_START_1_NATIVE :
8156
8157           element_mm >= EL_MM_START_2_NATIVE &&
8158           element_mm <= EL_MM_END_2_NATIVE ?
8159           EL_MM_START_2 + element_mm - EL_MM_START_2_NATIVE :
8160
8161           element_mm >= EL_MM_START_3_NATIVE &&
8162           element_mm <= EL_MM_END_3_NATIVE ?
8163           EL_MM_START_3 + element_mm - EL_MM_START_3_NATIVE :
8164
8165           element_mm >= EL_MM_CHAR_START_NATIVE &&
8166           element_mm <= EL_MM_CHAR_END_NATIVE ?
8167           EL_CHAR_START + element_mm - EL_MM_CHAR_START_NATIVE :
8168
8169           element_mm >= EL_MM_RUNTIME_START_NATIVE &&
8170           element_mm <= EL_MM_RUNTIME_END_NATIVE ?
8171           EL_MM_RUNTIME_START + element_mm - EL_MM_RUNTIME_START_NATIVE :
8172
8173           EL_EMPTY);
8174 }
8175
8176 int map_action_MM_to_RND(int action_mm)
8177 {
8178   // all MM actions are defined to exactly match their RND counterparts
8179   return action_mm;
8180 }
8181
8182 int map_sound_MM_to_RND(int sound_mm)
8183 {
8184   switch (sound_mm)
8185   {
8186     case SND_MM_GAME_LEVELTIME_CHARGING:
8187       return SND_GAME_LEVELTIME_CHARGING;
8188
8189     case SND_MM_GAME_HEALTH_CHARGING:
8190       return SND_GAME_HEALTH_CHARGING;
8191
8192     default:
8193       return SND_UNDEFINED;
8194   }
8195 }
8196
8197 int map_mm_wall_element(int element)
8198 {
8199   return (element >= EL_MM_STEEL_WALL_START &&
8200           element <= EL_MM_STEEL_WALL_END ?
8201           EL_MM_STEEL_WALL :
8202
8203           element >= EL_MM_WOODEN_WALL_START &&
8204           element <= EL_MM_WOODEN_WALL_END ?
8205           EL_MM_WOODEN_WALL :
8206
8207           element >= EL_MM_ICE_WALL_START &&
8208           element <= EL_MM_ICE_WALL_END ?
8209           EL_MM_ICE_WALL :
8210
8211           element >= EL_MM_AMOEBA_WALL_START &&
8212           element <= EL_MM_AMOEBA_WALL_END ?
8213           EL_MM_AMOEBA_WALL :
8214
8215           element >= EL_DF_STEEL_WALL_START &&
8216           element <= EL_DF_STEEL_WALL_END ?
8217           EL_DF_STEEL_WALL :
8218
8219           element >= EL_DF_WOODEN_WALL_START &&
8220           element <= EL_DF_WOODEN_WALL_END ?
8221           EL_DF_WOODEN_WALL :
8222
8223           element);
8224 }
8225
8226 int map_mm_wall_element_editor(int element)
8227 {
8228   switch (element)
8229   {
8230     case EL_MM_STEEL_WALL:      return EL_MM_STEEL_WALL_START;
8231     case EL_MM_WOODEN_WALL:     return EL_MM_WOODEN_WALL_START;
8232     case EL_MM_ICE_WALL:        return EL_MM_ICE_WALL_START;
8233     case EL_MM_AMOEBA_WALL:     return EL_MM_AMOEBA_WALL_START;
8234     case EL_DF_STEEL_WALL:      return EL_DF_STEEL_WALL_START;
8235     case EL_DF_WOODEN_WALL:     return EL_DF_WOODEN_WALL_START;
8236
8237     default:                    return element;
8238   }
8239 }
8240
8241 int get_next_element(int element)
8242 {
8243   switch (element)
8244   {
8245     case EL_QUICKSAND_FILLING:          return EL_QUICKSAND_FULL;
8246     case EL_QUICKSAND_EMPTYING:         return EL_QUICKSAND_EMPTY;
8247     case EL_QUICKSAND_FAST_FILLING:     return EL_QUICKSAND_FAST_FULL;
8248     case EL_QUICKSAND_FAST_EMPTYING:    return EL_QUICKSAND_FAST_EMPTY;
8249     case EL_MAGIC_WALL_FILLING:         return EL_MAGIC_WALL_FULL;
8250     case EL_MAGIC_WALL_EMPTYING:        return EL_MAGIC_WALL_ACTIVE;
8251     case EL_BD_MAGIC_WALL_FILLING:      return EL_BD_MAGIC_WALL_FULL;
8252     case EL_BD_MAGIC_WALL_EMPTYING:     return EL_BD_MAGIC_WALL_ACTIVE;
8253     case EL_DC_MAGIC_WALL_FILLING:      return EL_DC_MAGIC_WALL_FULL;
8254     case EL_DC_MAGIC_WALL_EMPTYING:     return EL_DC_MAGIC_WALL_ACTIVE;
8255     case EL_AMOEBA_DROPPING:            return EL_AMOEBA_WET;
8256
8257     default:                            return element;
8258   }
8259 }
8260
8261 int el2img_mm(int element_mm)
8262 {
8263   return el2img(map_element_MM_to_RND(element_mm));
8264 }
8265
8266 int el_act2img_mm(int element_mm, int action)
8267 {
8268   return el_act2img(map_element_MM_to_RND(element_mm), action);
8269 }
8270
8271 int el_act_dir2img(int element, int action, int direction)
8272 {
8273   element = GFX_ELEMENT(element);
8274   direction = MV_DIR_TO_BIT(direction); // default: MV_NONE => MV_DOWN
8275
8276   // direction_graphic[][] == graphic[] for undefined direction graphics
8277   return element_info[element].direction_graphic[action][direction];
8278 }
8279
8280 static int el_act_dir2crm(int element, int action, int direction)
8281 {
8282   element = GFX_ELEMENT(element);
8283   direction = MV_DIR_TO_BIT(direction); // default: MV_NONE => MV_DOWN
8284
8285   // direction_graphic[][] == graphic[] for undefined direction graphics
8286   return element_info[element].direction_crumbled[action][direction];
8287 }
8288
8289 int el_act2img(int element, int action)
8290 {
8291   element = GFX_ELEMENT(element);
8292
8293   return element_info[element].graphic[action];
8294 }
8295
8296 int el_act2crm(int element, int action)
8297 {
8298   element = GFX_ELEMENT(element);
8299
8300   return element_info[element].crumbled[action];
8301 }
8302
8303 int el_dir2img(int element, int direction)
8304 {
8305   element = GFX_ELEMENT(element);
8306
8307   return el_act_dir2img(element, ACTION_DEFAULT, direction);
8308 }
8309
8310 int el2baseimg(int element)
8311 {
8312   return element_info[element].graphic[ACTION_DEFAULT];
8313 }
8314
8315 int el2img(int element)
8316 {
8317   element = GFX_ELEMENT(element);
8318
8319   return element_info[element].graphic[ACTION_DEFAULT];
8320 }
8321
8322 int el2edimg(int element)
8323 {
8324   element = GFX_ELEMENT(element);
8325
8326   return element_info[element].special_graphic[GFX_SPECIAL_ARG_EDITOR];
8327 }
8328
8329 int el2preimg(int element)
8330 {
8331   element = GFX_ELEMENT(element);
8332
8333   return element_info[element].special_graphic[GFX_SPECIAL_ARG_PREVIEW];
8334 }
8335
8336 int el2panelimg(int element)
8337 {
8338   element = GFX_ELEMENT(element);
8339
8340   return element_info[element].special_graphic[GFX_SPECIAL_ARG_PANEL];
8341 }
8342
8343 int font2baseimg(int font_nr)
8344 {
8345   return font_info[font_nr].special_graphic[GFX_SPECIAL_ARG_DEFAULT];
8346 }
8347
8348 int getBeltNrFromBeltElement(int element)
8349 {
8350   return (element < EL_CONVEYOR_BELT_2_LEFT ? 0 :
8351           element < EL_CONVEYOR_BELT_3_LEFT ? 1 :
8352           element < EL_CONVEYOR_BELT_4_LEFT ? 2 : 3);
8353 }
8354
8355 int getBeltNrFromBeltActiveElement(int element)
8356 {
8357   return (element < EL_CONVEYOR_BELT_2_LEFT_ACTIVE ? 0 :
8358           element < EL_CONVEYOR_BELT_3_LEFT_ACTIVE ? 1 :
8359           element < EL_CONVEYOR_BELT_4_LEFT_ACTIVE ? 2 : 3);
8360 }
8361
8362 int getBeltNrFromBeltSwitchElement(int element)
8363 {
8364   return (element < EL_CONVEYOR_BELT_2_SWITCH_LEFT ? 0 :
8365           element < EL_CONVEYOR_BELT_3_SWITCH_LEFT ? 1 :
8366           element < EL_CONVEYOR_BELT_4_SWITCH_LEFT ? 2 : 3);
8367 }
8368
8369 int getBeltDirNrFromBeltElement(int element)
8370 {
8371   static int belt_base_element[4] =
8372   {
8373     EL_CONVEYOR_BELT_1_LEFT,
8374     EL_CONVEYOR_BELT_2_LEFT,
8375     EL_CONVEYOR_BELT_3_LEFT,
8376     EL_CONVEYOR_BELT_4_LEFT
8377   };
8378
8379   int belt_nr = getBeltNrFromBeltElement(element);
8380   int belt_dir_nr = element - belt_base_element[belt_nr];
8381
8382   return (belt_dir_nr % 3);
8383 }
8384
8385 int getBeltDirNrFromBeltSwitchElement(int element)
8386 {
8387   static int belt_base_element[4] =
8388   {
8389     EL_CONVEYOR_BELT_1_SWITCH_LEFT,
8390     EL_CONVEYOR_BELT_2_SWITCH_LEFT,
8391     EL_CONVEYOR_BELT_3_SWITCH_LEFT,
8392     EL_CONVEYOR_BELT_4_SWITCH_LEFT
8393   };
8394
8395   int belt_nr = getBeltNrFromBeltSwitchElement(element);
8396   int belt_dir_nr = element - belt_base_element[belt_nr];
8397
8398   return (belt_dir_nr % 3);
8399 }
8400
8401 int getBeltDirFromBeltElement(int element)
8402 {
8403   static int belt_move_dir[3] =
8404   {
8405     MV_LEFT,
8406     MV_NONE,
8407     MV_RIGHT
8408   };
8409
8410   int belt_dir_nr = getBeltDirNrFromBeltElement(element);
8411
8412   return belt_move_dir[belt_dir_nr];
8413 }
8414
8415 int getBeltDirFromBeltSwitchElement(int element)
8416 {
8417   static int belt_move_dir[3] =
8418   {
8419     MV_LEFT,
8420     MV_NONE,
8421     MV_RIGHT
8422   };
8423
8424   int belt_dir_nr = getBeltDirNrFromBeltSwitchElement(element);
8425
8426   return belt_move_dir[belt_dir_nr];
8427 }
8428
8429 int getBeltElementFromBeltNrAndBeltDirNr(int belt_nr, int belt_dir_nr)
8430 {
8431   static int belt_base_element[4] =
8432   {
8433     EL_CONVEYOR_BELT_1_LEFT,
8434     EL_CONVEYOR_BELT_2_LEFT,
8435     EL_CONVEYOR_BELT_3_LEFT,
8436     EL_CONVEYOR_BELT_4_LEFT
8437   };
8438
8439   return belt_base_element[belt_nr] + belt_dir_nr;
8440 }
8441
8442 int getBeltElementFromBeltNrAndBeltDir(int belt_nr, int belt_dir)
8443 {
8444   int belt_dir_nr = (belt_dir == MV_LEFT ? 0 : belt_dir == MV_RIGHT ? 2 : 1);
8445
8446   return getBeltElementFromBeltNrAndBeltDirNr(belt_nr, belt_dir_nr);
8447 }
8448
8449 int getBeltSwitchElementFromBeltNrAndBeltDirNr(int belt_nr, int belt_dir_nr)
8450 {
8451   static int belt_base_element[4] =
8452   {
8453     EL_CONVEYOR_BELT_1_SWITCH_LEFT,
8454     EL_CONVEYOR_BELT_2_SWITCH_LEFT,
8455     EL_CONVEYOR_BELT_3_SWITCH_LEFT,
8456     EL_CONVEYOR_BELT_4_SWITCH_LEFT
8457   };
8458
8459   return belt_base_element[belt_nr] + belt_dir_nr;
8460 }
8461
8462 int getBeltSwitchElementFromBeltNrAndBeltDir(int belt_nr, int belt_dir)
8463 {
8464   int belt_dir_nr = (belt_dir == MV_LEFT ? 0 : belt_dir == MV_RIGHT ? 2 : 1);
8465
8466   return getBeltSwitchElementFromBeltNrAndBeltDirNr(belt_nr, belt_dir_nr);
8467 }
8468
8469 boolean swapTiles_EM(boolean is_pre_emc_cave)
8470 {
8471   return is_pre_emc_cave && leveldir_current->use_emc_tiles;
8472 }
8473
8474 boolean getTeamMode_EM(void)
8475 {
8476   return game.team_mode || network_playing;
8477 }
8478
8479 boolean isActivePlayer_EM(int player_nr)
8480 {
8481   return stored_player[player_nr].active;
8482 }
8483
8484 unsigned int InitRND(int seed)
8485 {
8486   if (level.game_engine_type == GAME_ENGINE_TYPE_EM)
8487     return InitEngineRandom_EM(seed);
8488   else if (level.game_engine_type == GAME_ENGINE_TYPE_SP)
8489     return InitEngineRandom_SP(seed);
8490   else if (level.game_engine_type == GAME_ENGINE_TYPE_MM)
8491     return InitEngineRandom_MM(seed);
8492   else
8493     return InitEngineRandom_RND(seed);
8494 }
8495
8496 static struct Mapping_EM_to_RND_object object_mapping[GAME_TILE_MAX];
8497 static struct Mapping_EM_to_RND_player player_mapping[MAX_PLAYERS][PLY_MAX];
8498
8499 static int get_effective_element_EM(int tile, int frame_em)
8500 {
8501   int element             = object_mapping[tile].element_rnd;
8502   int action              = object_mapping[tile].action;
8503   boolean is_backside     = object_mapping[tile].is_backside;
8504   boolean action_removing = (action == ACTION_DIGGING ||
8505                              action == ACTION_SNAPPING ||
8506                              action == ACTION_COLLECTING);
8507
8508   if (frame_em < 7)
8509   {
8510     switch (tile)
8511     {
8512       case Xsplash_e:
8513       case Xsplash_w:
8514         return (frame_em > 5 ? EL_EMPTY : element);
8515
8516       default:
8517         return element;
8518     }
8519   }
8520   else  // frame_em == 7
8521   {
8522     switch (tile)
8523     {
8524       case Xsplash_e:
8525       case Xsplash_w:
8526         return EL_EMPTY;
8527
8528       case Ynut_stone:
8529         return EL_EMERALD;
8530
8531       case Ydiamond_stone:
8532         return EL_ROCK;
8533
8534       case Xdrip_stretch:
8535       case Xdrip_stretchB:
8536       case Ydrip_1_s:
8537       case Ydrip_1_sB:
8538       case Yball_1:
8539       case Xball_2:
8540       case Yball_2:
8541       case Yball_blank:
8542       case Ykey_1_blank:
8543       case Ykey_2_blank:
8544       case Ykey_3_blank:
8545       case Ykey_4_blank:
8546       case Ykey_5_blank:
8547       case Ykey_6_blank:
8548       case Ykey_7_blank:
8549       case Ykey_8_blank:
8550       case Ylenses_blank:
8551       case Ymagnify_blank:
8552       case Ygrass_blank:
8553       case Ydirt_blank:
8554       case Xsand_stonein_1:
8555       case Xsand_stonein_2:
8556       case Xsand_stonein_3:
8557       case Xsand_stonein_4:
8558         return element;
8559
8560       default:
8561         return (is_backside || action_removing ? EL_EMPTY : element);
8562     }
8563   }
8564 }
8565
8566 static boolean check_linear_animation_EM(int tile)
8567 {
8568   switch (tile)
8569   {
8570     case Xsand_stonesand_1:
8571     case Xsand_stonesand_quickout_1:
8572     case Xsand_sandstone_1:
8573     case Xsand_stonein_1:
8574     case Xsand_stoneout_1:
8575     case Xboom_1:
8576     case Xdynamite_1:
8577     case Ybug_w_n:
8578     case Ybug_n_e:
8579     case Ybug_e_s:
8580     case Ybug_s_w:
8581     case Ybug_e_n:
8582     case Ybug_s_e:
8583     case Ybug_w_s:
8584     case Ybug_n_w:
8585     case Ytank_w_n:
8586     case Ytank_n_e:
8587     case Ytank_e_s:
8588     case Ytank_s_w:
8589     case Ytank_e_n:
8590     case Ytank_s_e:
8591     case Ytank_w_s:
8592     case Ytank_n_w:
8593     case Xsplash_e:
8594     case Xsplash_w:
8595     case Ynut_stone:
8596       return TRUE;
8597   }
8598
8599   return FALSE;
8600 }
8601
8602 static void set_crumbled_graphics_EM(struct GraphicInfo_EM *g_em,
8603                                      boolean has_crumbled_graphics,
8604                                      int crumbled, int sync_frame)
8605 {
8606   // if element can be crumbled, but certain action graphics are just empty
8607   // space (like instantly snapping sand to empty space in 1 frame), do not
8608   // treat these empty space graphics as crumbled graphics in EMC engine
8609   if (crumbled == IMG_EMPTY_SPACE)
8610     has_crumbled_graphics = FALSE;
8611
8612   if (has_crumbled_graphics)
8613   {
8614     struct GraphicInfo *g_crumbled = &graphic_info[crumbled];
8615     int frame_crumbled = getAnimationFrame(g_crumbled->anim_frames,
8616                                            g_crumbled->anim_delay,
8617                                            g_crumbled->anim_mode,
8618                                            g_crumbled->anim_start_frame,
8619                                            sync_frame);
8620
8621     getGraphicSource(crumbled, frame_crumbled, &g_em->crumbled_bitmap,
8622                      &g_em->crumbled_src_x, &g_em->crumbled_src_y);
8623
8624     g_em->crumbled_border_size = graphic_info[crumbled].border_size;
8625     g_em->crumbled_tile_size = graphic_info[crumbled].tile_size;
8626
8627     g_em->has_crumbled_graphics = TRUE;
8628   }
8629   else
8630   {
8631     g_em->crumbled_bitmap = NULL;
8632     g_em->crumbled_src_x = 0;
8633     g_em->crumbled_src_y = 0;
8634     g_em->crumbled_border_size = 0;
8635     g_em->crumbled_tile_size = 0;
8636
8637     g_em->has_crumbled_graphics = FALSE;
8638   }
8639 }
8640
8641 #if 0
8642 void ResetGfxAnimation_EM(int x, int y, int tile)
8643 {
8644   GfxFrame[x][y] = 0;
8645 }
8646 #endif
8647
8648 void SetGfxAnimation_EM(struct GraphicInfo_EM *g_em,
8649                         int tile, int frame_em, int x, int y)
8650 {
8651   int action = object_mapping[tile].action;
8652   int direction = object_mapping[tile].direction;
8653   int effective_element = get_effective_element_EM(tile, frame_em);
8654   int graphic = (direction == MV_NONE ?
8655                  el_act2img(effective_element, action) :
8656                  el_act_dir2img(effective_element, action, direction));
8657   struct GraphicInfo *g = &graphic_info[graphic];
8658   int sync_frame;
8659   boolean action_removing = (action == ACTION_DIGGING ||
8660                              action == ACTION_SNAPPING ||
8661                              action == ACTION_COLLECTING);
8662   boolean action_moving   = (action == ACTION_FALLING ||
8663                              action == ACTION_MOVING ||
8664                              action == ACTION_PUSHING ||
8665                              action == ACTION_EATING ||
8666                              action == ACTION_FILLING ||
8667                              action == ACTION_EMPTYING);
8668   boolean action_falling  = (action == ACTION_FALLING ||
8669                              action == ACTION_FILLING ||
8670                              action == ACTION_EMPTYING);
8671
8672   // special case: graphic uses "2nd movement tile" and has defined
8673   // 7 frames for movement animation (or less) => use default graphic
8674   // for last (8th) frame which ends the movement animation
8675   if (g->double_movement && g->anim_frames < 8 && frame_em == 7)
8676   {
8677     action = ACTION_DEFAULT;    // (keep action_* unchanged for now)
8678     graphic = (direction == MV_NONE ?
8679                el_act2img(effective_element, action) :
8680                el_act_dir2img(effective_element, action, direction));
8681
8682     g = &graphic_info[graphic];
8683   }
8684
8685   if ((action_removing || check_linear_animation_EM(tile)) && frame_em == 0)
8686   {
8687     GfxFrame[x][y] = 0;
8688   }
8689   else if (action_moving)
8690   {
8691     boolean is_backside = object_mapping[tile].is_backside;
8692
8693     if (is_backside)
8694     {
8695       int direction = object_mapping[tile].direction;
8696       int move_dir = (action_falling ? MV_DOWN : direction);
8697
8698       GfxFrame[x][y]++;
8699
8700 #if 1
8701       // !!! TEST !!! NEW !!! DOES NOT WORK RIGHT YET !!!
8702       if (g->double_movement && frame_em == 0)
8703         GfxFrame[x][y] = 0;
8704 #endif
8705
8706       if (move_dir == MV_LEFT)
8707         GfxFrame[x - 1][y] = GfxFrame[x][y];
8708       else if (move_dir == MV_RIGHT)
8709         GfxFrame[x + 1][y] = GfxFrame[x][y];
8710       else if (move_dir == MV_UP)
8711         GfxFrame[x][y - 1] = GfxFrame[x][y];
8712       else if (move_dir == MV_DOWN)
8713         GfxFrame[x][y + 1] = GfxFrame[x][y];
8714     }
8715   }
8716   else
8717   {
8718     GfxFrame[x][y]++;
8719
8720     // special case: animation for Xsand_stonesand_quickout_1/2 twice as fast
8721     if (tile == Xsand_stonesand_quickout_1 ||
8722         tile == Xsand_stonesand_quickout_2)
8723       GfxFrame[x][y]++;
8724   }
8725
8726   if (graphic_info[graphic].anim_global_sync)
8727     sync_frame = FrameCounter;
8728   else if (graphic_info[graphic].anim_global_anim_sync)
8729     sync_frame = getGlobalAnimSyncFrame();
8730   else if (IN_FIELD(x, y, MAX_LEV_FIELDX, MAX_LEV_FIELDY))
8731     sync_frame = GfxFrame[x][y];
8732   else
8733     sync_frame = 0;     // playfield border (pseudo steel)
8734
8735   SetRandomAnimationValue(x, y);
8736
8737   int frame = getAnimationFrame(g->anim_frames,
8738                                 g->anim_delay,
8739                                 g->anim_mode,
8740                                 g->anim_start_frame,
8741                                 sync_frame);
8742
8743   g_em->unique_identifier =
8744     (graphic << 16) | ((frame % 8) << 12) | (g_em->width << 6) | g_em->height;
8745 }
8746
8747 void getGraphicSourceObjectExt_EM(struct GraphicInfo_EM *g_em,
8748                                   int tile, int frame_em, int x, int y)
8749 {
8750   int action = object_mapping[tile].action;
8751   int direction = object_mapping[tile].direction;
8752   boolean is_backside = object_mapping[tile].is_backside;
8753   int effective_element = get_effective_element_EM(tile, frame_em);
8754   int effective_action = action;
8755   int graphic = (direction == MV_NONE ?
8756                  el_act2img(effective_element, effective_action) :
8757                  el_act_dir2img(effective_element, effective_action,
8758                                 direction));
8759   int crumbled = (direction == MV_NONE ?
8760                   el_act2crm(effective_element, effective_action) :
8761                   el_act_dir2crm(effective_element, effective_action,
8762                                  direction));
8763   int base_graphic = el_act2img(effective_element, ACTION_DEFAULT);
8764   int base_crumbled = el_act2crm(effective_element, ACTION_DEFAULT);
8765   boolean has_crumbled_graphics = (base_crumbled != base_graphic);
8766   struct GraphicInfo *g = &graphic_info[graphic];
8767   int sync_frame;
8768
8769   // special case: graphic uses "2nd movement tile" and has defined
8770   // 7 frames for movement animation (or less) => use default graphic
8771   // for last (8th) frame which ends the movement animation
8772   if (g->double_movement && g->anim_frames < 8 && frame_em == 7)
8773   {
8774     effective_action = ACTION_DEFAULT;
8775     graphic = (direction == MV_NONE ?
8776                el_act2img(effective_element, effective_action) :
8777                el_act_dir2img(effective_element, effective_action,
8778                               direction));
8779     crumbled = (direction == MV_NONE ?
8780                 el_act2crm(effective_element, effective_action) :
8781                 el_act_dir2crm(effective_element, effective_action,
8782                                direction));
8783
8784     g = &graphic_info[graphic];
8785   }
8786
8787   if (graphic_info[graphic].anim_global_sync)
8788     sync_frame = FrameCounter;
8789   else if (graphic_info[graphic].anim_global_anim_sync)
8790     sync_frame = getGlobalAnimSyncFrame();
8791   else if (IN_FIELD(x, y, MAX_LEV_FIELDX, MAX_LEV_FIELDY))
8792     sync_frame = GfxFrame[x][y];
8793   else
8794     sync_frame = 0;     // playfield border (pseudo steel)
8795
8796   SetRandomAnimationValue(x, y);
8797
8798   int frame = getAnimationFrame(g->anim_frames,
8799                                 g->anim_delay,
8800                                 g->anim_mode,
8801                                 g->anim_start_frame,
8802                                 sync_frame);
8803
8804   getGraphicSourceExt(graphic, frame, &g_em->bitmap, &g_em->src_x, &g_em->src_y,
8805                       g->double_movement && is_backside);
8806
8807   // (updating the "crumbled" graphic definitions is probably not really needed,
8808   // as animations for crumbled graphics can't be longer than one EMC cycle)
8809   set_crumbled_graphics_EM(g_em, has_crumbled_graphics, crumbled,
8810                            sync_frame);
8811 }
8812
8813 void getGraphicSourcePlayerExt_EM(struct GraphicInfo_EM *g_em,
8814                                   int player_nr, int anim, int frame_em)
8815 {
8816   int element   = player_mapping[player_nr][anim].element_rnd;
8817   int action    = player_mapping[player_nr][anim].action;
8818   int direction = player_mapping[player_nr][anim].direction;
8819   int graphic = (direction == MV_NONE ?
8820                  el_act2img(element, action) :
8821                  el_act_dir2img(element, action, direction));
8822   struct GraphicInfo *g = &graphic_info[graphic];
8823   int sync_frame;
8824
8825   InitPlayerGfxAnimation(&stored_player[player_nr], action, direction);
8826
8827   stored_player[player_nr].StepFrame = frame_em;
8828
8829   sync_frame = stored_player[player_nr].Frame;
8830
8831   int frame = getAnimationFrame(g->anim_frames,
8832                                 g->anim_delay,
8833                                 g->anim_mode,
8834                                 g->anim_start_frame,
8835                                 sync_frame);
8836
8837   getGraphicSourceExt(graphic, frame, &g_em->bitmap,
8838                       &g_em->src_x, &g_em->src_y, FALSE);
8839 }
8840
8841 void InitGraphicInfo_EM(void)
8842 {
8843   int i, j, p;
8844
8845   // always start with reliable default values
8846   for (i = 0; i < GAME_TILE_MAX; i++)
8847   {
8848     object_mapping[i].element_rnd = EL_UNKNOWN;
8849     object_mapping[i].is_backside = FALSE;
8850     object_mapping[i].action = ACTION_DEFAULT;
8851     object_mapping[i].direction = MV_NONE;
8852   }
8853
8854   // always start with reliable default values
8855   for (p = 0; p < MAX_PLAYERS; p++)
8856   {
8857     for (i = 0; i < PLY_MAX; i++)
8858     {
8859       player_mapping[p][i].element_rnd = EL_UNKNOWN;
8860       player_mapping[p][i].action = ACTION_DEFAULT;
8861       player_mapping[p][i].direction = MV_NONE;
8862     }
8863   }
8864
8865   for (i = 0; em_object_mapping_list[i].element_em != -1; i++)
8866   {
8867     int e = em_object_mapping_list[i].element_em;
8868
8869     object_mapping[e].element_rnd = em_object_mapping_list[i].element_rnd;
8870     object_mapping[e].is_backside = em_object_mapping_list[i].is_backside;
8871
8872     if (em_object_mapping_list[i].action != -1)
8873       object_mapping[e].action = em_object_mapping_list[i].action;
8874
8875     if (em_object_mapping_list[i].direction != -1)
8876       object_mapping[e].direction =
8877         MV_DIR_FROM_BIT(em_object_mapping_list[i].direction);
8878   }
8879
8880   for (i = 0; em_player_mapping_list[i].action_em != -1; i++)
8881   {
8882     int a = em_player_mapping_list[i].action_em;
8883     int p = em_player_mapping_list[i].player_nr;
8884
8885     player_mapping[p][a].element_rnd = em_player_mapping_list[i].element_rnd;
8886
8887     if (em_player_mapping_list[i].action != -1)
8888       player_mapping[p][a].action = em_player_mapping_list[i].action;
8889
8890     if (em_player_mapping_list[i].direction != -1)
8891       player_mapping[p][a].direction =
8892         MV_DIR_FROM_BIT(em_player_mapping_list[i].direction);
8893   }
8894
8895   for (i = 0; i < GAME_TILE_MAX; i++)
8896   {
8897     int element = object_mapping[i].element_rnd;
8898     int action = object_mapping[i].action;
8899     int direction = object_mapping[i].direction;
8900     boolean is_backside = object_mapping[i].is_backside;
8901     boolean action_exploding = ((action == ACTION_EXPLODING ||
8902                                  action == ACTION_SMASHED_BY_ROCK ||
8903                                  action == ACTION_SMASHED_BY_SPRING) &&
8904                                 element != EL_DIAMOND);
8905     boolean action_active = (action == ACTION_ACTIVE);
8906     boolean action_other = (action == ACTION_OTHER);
8907
8908     for (j = 0; j < 8; j++)
8909     {
8910       int effective_element = get_effective_element_EM(i, j);
8911       int effective_action = (j < 7 ? action :
8912                               i == Xdrip_stretch ? action :
8913                               i == Xdrip_stretchB ? action :
8914                               i == Ydrip_1_s ? action :
8915                               i == Ydrip_1_sB ? action :
8916                               i == Yball_1 ? action :
8917                               i == Xball_2 ? action :
8918                               i == Yball_2 ? action :
8919                               i == Yball_blank ? action :
8920                               i == Ykey_1_blank ? action :
8921                               i == Ykey_2_blank ? action :
8922                               i == Ykey_3_blank ? action :
8923                               i == Ykey_4_blank ? action :
8924                               i == Ykey_5_blank ? action :
8925                               i == Ykey_6_blank ? action :
8926                               i == Ykey_7_blank ? action :
8927                               i == Ykey_8_blank ? action :
8928                               i == Ylenses_blank ? action :
8929                               i == Ymagnify_blank ? action :
8930                               i == Ygrass_blank ? action :
8931                               i == Ydirt_blank ? action :
8932                               i == Xsand_stonein_1 ? action :
8933                               i == Xsand_stonein_2 ? action :
8934                               i == Xsand_stonein_3 ? action :
8935                               i == Xsand_stonein_4 ? action :
8936                               i == Xsand_stoneout_1 ? action :
8937                               i == Xsand_stoneout_2 ? action :
8938                               i == Xboom_android ? ACTION_EXPLODING :
8939                               action_exploding ? ACTION_EXPLODING :
8940                               action_active ? action :
8941                               action_other ? action :
8942                               ACTION_DEFAULT);
8943       int graphic = (el_act_dir2img(effective_element, effective_action,
8944                                     direction));
8945       int crumbled = (el_act_dir2crm(effective_element, effective_action,
8946                                      direction));
8947       int base_graphic = el_act2img(effective_element, ACTION_DEFAULT);
8948       int base_crumbled = el_act2crm(effective_element, ACTION_DEFAULT);
8949       boolean has_action_graphics = (graphic != base_graphic);
8950       boolean has_crumbled_graphics = (base_crumbled != base_graphic);
8951       struct GraphicInfo *g = &graphic_info[graphic];
8952       struct GraphicInfo_EM *g_em = &graphic_info_em_object[i][j];
8953       Bitmap *src_bitmap;
8954       int src_x, src_y;
8955       // ensure to get symmetric 3-frame, 2-delay animations as used in EM
8956       boolean special_animation = (action != ACTION_DEFAULT &&
8957                                    g->anim_frames == 3 &&
8958                                    g->anim_delay == 2 &&
8959                                    g->anim_mode & ANIM_LINEAR);
8960       int sync_frame = (i == Xdrip_stretch ? 7 :
8961                         i == Xdrip_stretchB ? 7 :
8962                         i == Ydrip_2_s ? j + 8 :
8963                         i == Ydrip_2_sB ? j + 8 :
8964                         i == Xacid_1 ? 0 :
8965                         i == Xacid_2 ? 10 :
8966                         i == Xacid_3 ? 20 :
8967                         i == Xacid_4 ? 30 :
8968                         i == Xacid_5 ? 40 :
8969                         i == Xacid_6 ? 50 :
8970                         i == Xacid_7 ? 60 :
8971                         i == Xacid_8 ? 70 :
8972                         i == Xfake_acid_1 ? 0 :
8973                         i == Xfake_acid_2 ? 10 :
8974                         i == Xfake_acid_3 ? 20 :
8975                         i == Xfake_acid_4 ? 30 :
8976                         i == Xfake_acid_5 ? 40 :
8977                         i == Xfake_acid_6 ? 50 :
8978                         i == Xfake_acid_7 ? 60 :
8979                         i == Xfake_acid_8 ? 70 :
8980                         i == Xfake_acid_1_player ? 0 :
8981                         i == Xfake_acid_2_player ? 10 :
8982                         i == Xfake_acid_3_player ? 20 :
8983                         i == Xfake_acid_4_player ? 30 :
8984                         i == Xfake_acid_5_player ? 40 :
8985                         i == Xfake_acid_6_player ? 50 :
8986                         i == Xfake_acid_7_player ? 60 :
8987                         i == Xfake_acid_8_player ? 70 :
8988                         i == Xball_2 ? 7 :
8989                         i == Yball_2 ? j + 8 :
8990                         i == Yball_blank ? j + 1 :
8991                         i == Ykey_1_blank ? j + 1 :
8992                         i == Ykey_2_blank ? j + 1 :
8993                         i == Ykey_3_blank ? j + 1 :
8994                         i == Ykey_4_blank ? j + 1 :
8995                         i == Ykey_5_blank ? j + 1 :
8996                         i == Ykey_6_blank ? j + 1 :
8997                         i == Ykey_7_blank ? j + 1 :
8998                         i == Ykey_8_blank ? j + 1 :
8999                         i == Ylenses_blank ? j + 1 :
9000                         i == Ymagnify_blank ? j + 1 :
9001                         i == Ygrass_blank ? j + 1 :
9002                         i == Ydirt_blank ? j + 1 :
9003                         i == Xamoeba_1 ? 0 :
9004                         i == Xamoeba_2 ? 1 :
9005                         i == Xamoeba_3 ? 2 :
9006                         i == Xamoeba_4 ? 3 :
9007                         i == Xamoeba_5 ? 0 :
9008                         i == Xamoeba_6 ? 1 :
9009                         i == Xamoeba_7 ? 2 :
9010                         i == Xamoeba_8 ? 3 :
9011                         i == Xexit_2 ? j + 8 :
9012                         i == Xexit_3 ? j + 16 :
9013                         i == Xdynamite_1 ? 0 :
9014                         i == Xdynamite_2 ? 8 :
9015                         i == Xdynamite_3 ? 16 :
9016                         i == Xdynamite_4 ? 24 :
9017                         i == Xsand_stonein_1 ? j + 1 :
9018                         i == Xsand_stonein_2 ? j + 9 :
9019                         i == Xsand_stonein_3 ? j + 17 :
9020                         i == Xsand_stonein_4 ? j + 25 :
9021                         i == Xsand_stoneout_1 && j == 0 ? 0 :
9022                         i == Xsand_stoneout_1 && j == 1 ? 0 :
9023                         i == Xsand_stoneout_1 && j == 2 ? 1 :
9024                         i == Xsand_stoneout_1 && j == 3 ? 2 :
9025                         i == Xsand_stoneout_1 && j == 4 ? 2 :
9026                         i == Xsand_stoneout_1 && j == 5 ? 3 :
9027                         i == Xsand_stoneout_1 && j == 6 ? 4 :
9028                         i == Xsand_stoneout_1 && j == 7 ? 4 :
9029                         i == Xsand_stoneout_2 && j == 0 ? 5 :
9030                         i == Xsand_stoneout_2 && j == 1 ? 6 :
9031                         i == Xsand_stoneout_2 && j == 2 ? 7 :
9032                         i == Xsand_stoneout_2 && j == 3 ? 8 :
9033                         i == Xsand_stoneout_2 && j == 4 ? 9 :
9034                         i == Xsand_stoneout_2 && j == 5 ? 11 :
9035                         i == Xsand_stoneout_2 && j == 6 ? 13 :
9036                         i == Xsand_stoneout_2 && j == 7 ? 15 :
9037                         i == Xboom_bug && j == 1 ? 2 :
9038                         i == Xboom_bug && j == 2 ? 2 :
9039                         i == Xboom_bug && j == 3 ? 4 :
9040                         i == Xboom_bug && j == 4 ? 4 :
9041                         i == Xboom_bug && j == 5 ? 2 :
9042                         i == Xboom_bug && j == 6 ? 2 :
9043                         i == Xboom_bug && j == 7 ? 0 :
9044                         i == Xboom_tank && j == 1 ? 2 :
9045                         i == Xboom_tank && j == 2 ? 2 :
9046                         i == Xboom_tank && j == 3 ? 4 :
9047                         i == Xboom_tank && j == 4 ? 4 :
9048                         i == Xboom_tank && j == 5 ? 2 :
9049                         i == Xboom_tank && j == 6 ? 2 :
9050                         i == Xboom_tank && j == 7 ? 0 :
9051                         i == Xboom_android && j == 7 ? 6 :
9052                         i == Xboom_1 && j == 1 ? 2 :
9053                         i == Xboom_1 && j == 2 ? 2 :
9054                         i == Xboom_1 && j == 3 ? 4 :
9055                         i == Xboom_1 && j == 4 ? 4 :
9056                         i == Xboom_1 && j == 5 ? 6 :
9057                         i == Xboom_1 && j == 6 ? 6 :
9058                         i == Xboom_1 && j == 7 ? 8 :
9059                         i == Xboom_2 && j == 0 ? 8 :
9060                         i == Xboom_2 && j == 1 ? 8 :
9061                         i == Xboom_2 && j == 2 ? 10 :
9062                         i == Xboom_2 && j == 3 ? 10 :
9063                         i == Xboom_2 && j == 4 ? 10 :
9064                         i == Xboom_2 && j == 5 ? 12 :
9065                         i == Xboom_2 && j == 6 ? 12 :
9066                         i == Xboom_2 && j == 7 ? 12 :
9067                         special_animation && j == 4 ? 3 :
9068                         effective_action != action ? 0 :
9069                         j);
9070       int frame = getAnimationFrame(g->anim_frames,
9071                                     g->anim_delay,
9072                                     g->anim_mode,
9073                                     g->anim_start_frame,
9074                                     sync_frame);
9075
9076       getGraphicSourceExt(graphic, frame, &src_bitmap, &src_x, &src_y,
9077                           g->double_movement && is_backside);
9078
9079       g_em->bitmap = src_bitmap;
9080       g_em->src_x = src_x;
9081       g_em->src_y = src_y;
9082       g_em->src_offset_x = 0;
9083       g_em->src_offset_y = 0;
9084       g_em->dst_offset_x = 0;
9085       g_em->dst_offset_y = 0;
9086       g_em->width  = TILEX;
9087       g_em->height = TILEY;
9088
9089       g_em->preserve_background = FALSE;
9090
9091       set_crumbled_graphics_EM(g_em, has_crumbled_graphics, crumbled,
9092                                sync_frame);
9093
9094       if ((!g->double_movement && (effective_action == ACTION_FALLING ||
9095                                    effective_action == ACTION_MOVING  ||
9096                                    effective_action == ACTION_PUSHING ||
9097                                    effective_action == ACTION_EATING)) ||
9098           (!has_action_graphics && (effective_action == ACTION_FILLING ||
9099                                     effective_action == ACTION_EMPTYING)))
9100       {
9101         int move_dir =
9102           (effective_action == ACTION_FALLING ||
9103            effective_action == ACTION_FILLING ||
9104            effective_action == ACTION_EMPTYING ? MV_DOWN : direction);
9105         int dx = (move_dir == MV_LEFT ? -1 : move_dir == MV_RIGHT ? 1 : 0);
9106         int dy = (move_dir == MV_UP   ? -1 : move_dir == MV_DOWN  ? 1 : 0);
9107         int num_steps = (i == Ydrip_1_s  ? 16 :
9108                          i == Ydrip_1_sB ? 16 :
9109                          i == Ydrip_2_s  ? 16 :
9110                          i == Ydrip_2_sB ? 16 :
9111                          i == Xsand_stonein_1 ? 32 :
9112                          i == Xsand_stonein_2 ? 32 :
9113                          i == Xsand_stonein_3 ? 32 :
9114                          i == Xsand_stonein_4 ? 32 :
9115                          i == Xsand_stoneout_1 ? 16 :
9116                          i == Xsand_stoneout_2 ? 16 : 8);
9117         int cx = ABS(dx) * (TILEX / num_steps);
9118         int cy = ABS(dy) * (TILEY / num_steps);
9119         int step_frame = (i == Ydrip_2_s        ? j + 8 :
9120                           i == Ydrip_2_sB       ? j + 8 :
9121                           i == Xsand_stonein_2  ? j + 8 :
9122                           i == Xsand_stonein_3  ? j + 16 :
9123                           i == Xsand_stonein_4  ? j + 24 :
9124                           i == Xsand_stoneout_2 ? j + 8 : j) + 1;
9125         int step = (is_backside ? step_frame : num_steps - step_frame);
9126
9127         if (is_backside)        // tile where movement starts
9128         {
9129           if (dx < 0 || dy < 0)
9130           {
9131             g_em->src_offset_x = cx * step;
9132             g_em->src_offset_y = cy * step;
9133           }
9134           else
9135           {
9136             g_em->dst_offset_x = cx * step;
9137             g_em->dst_offset_y = cy * step;
9138           }
9139         }
9140         else                    // tile where movement ends
9141         {
9142           if (dx < 0 || dy < 0)
9143           {
9144             g_em->dst_offset_x = cx * step;
9145             g_em->dst_offset_y = cy * step;
9146           }
9147           else
9148           {
9149             g_em->src_offset_x = cx * step;
9150             g_em->src_offset_y = cy * step;
9151           }
9152         }
9153
9154         g_em->width  = TILEX - cx * step;
9155         g_em->height = TILEY - cy * step;
9156       }
9157
9158       // create unique graphic identifier to decide if tile must be redrawn
9159       /* bit 31 - 16 (16 bit): EM style graphic
9160          bit 15 - 12 ( 4 bit): EM style frame
9161          bit 11 -  6 ( 6 bit): graphic width
9162          bit  5 -  0 ( 6 bit): graphic height */
9163       g_em->unique_identifier =
9164         (graphic << 16) | (frame << 12) | (g_em->width << 6) | g_em->height;
9165     }
9166   }
9167
9168   for (i = 0; i < GAME_TILE_MAX; i++)
9169   {
9170     for (j = 0; j < 8; j++)
9171     {
9172       int element = object_mapping[i].element_rnd;
9173       int action = object_mapping[i].action;
9174       int direction = object_mapping[i].direction;
9175       boolean is_backside = object_mapping[i].is_backside;
9176       int graphic_action  = el_act_dir2img(element, action, direction);
9177       int graphic_default = el_act_dir2img(element, ACTION_DEFAULT, direction);
9178
9179       if ((action == ACTION_SMASHED_BY_ROCK ||
9180            action == ACTION_SMASHED_BY_SPRING ||
9181            action == ACTION_EATING) &&
9182           graphic_action == graphic_default)
9183       {
9184         int e = (action == ACTION_SMASHED_BY_ROCK   ? Ystone_s  :
9185                  action == ACTION_SMASHED_BY_SPRING ? Yspring_s :
9186                  direction == MV_LEFT  ? (is_backside? Yspring_wB: Yspring_w) :
9187                  direction == MV_RIGHT ? (is_backside? Yspring_eB: Yspring_e) :
9188                  Xspring);
9189
9190         // no separate animation for "smashed by rock" -- use rock instead
9191         struct GraphicInfo_EM *g_em = &graphic_info_em_object[i][j];
9192         struct GraphicInfo_EM *g_xx = &graphic_info_em_object[e][j];
9193
9194         g_em->bitmap            = g_xx->bitmap;
9195         g_em->src_x             = g_xx->src_x;
9196         g_em->src_y             = g_xx->src_y;
9197         g_em->src_offset_x      = g_xx->src_offset_x;
9198         g_em->src_offset_y      = g_xx->src_offset_y;
9199         g_em->dst_offset_x      = g_xx->dst_offset_x;
9200         g_em->dst_offset_y      = g_xx->dst_offset_y;
9201         g_em->width             = g_xx->width;
9202         g_em->height            = g_xx->height;
9203         g_em->unique_identifier = g_xx->unique_identifier;
9204
9205         if (!is_backside)
9206           g_em->preserve_background = TRUE;
9207       }
9208     }
9209   }
9210
9211   for (p = 0; p < MAX_PLAYERS; p++)
9212   {
9213     for (i = 0; i < PLY_MAX; i++)
9214     {
9215       int element = player_mapping[p][i].element_rnd;
9216       int action = player_mapping[p][i].action;
9217       int direction = player_mapping[p][i].direction;
9218
9219       for (j = 0; j < 8; j++)
9220       {
9221         int effective_element = element;
9222         int effective_action = action;
9223         int graphic = (direction == MV_NONE ?
9224                        el_act2img(effective_element, effective_action) :
9225                        el_act_dir2img(effective_element, effective_action,
9226                                       direction));
9227         struct GraphicInfo *g = &graphic_info[graphic];
9228         struct GraphicInfo_EM *g_em = &graphic_info_em_player[p][i][j];
9229         Bitmap *src_bitmap;
9230         int src_x, src_y;
9231         int sync_frame = j;
9232         int frame = getAnimationFrame(g->anim_frames,
9233                                       g->anim_delay,
9234                                       g->anim_mode,
9235                                       g->anim_start_frame,
9236                                       sync_frame);
9237
9238         getGraphicSourceExt(graphic, frame, &src_bitmap, &src_x, &src_y, FALSE);
9239
9240         g_em->bitmap = src_bitmap;
9241         g_em->src_x = src_x;
9242         g_em->src_y = src_y;
9243         g_em->src_offset_x = 0;
9244         g_em->src_offset_y = 0;
9245         g_em->dst_offset_x = 0;
9246         g_em->dst_offset_y = 0;
9247         g_em->width  = TILEX;
9248         g_em->height = TILEY;
9249       }
9250     }
9251   }
9252 }
9253
9254 static void CheckSaveEngineSnapshot_EM(int frame,
9255                                        boolean any_player_moving,
9256                                        boolean any_player_snapping,
9257                                        boolean any_player_dropping)
9258 {
9259   if (frame == 7 && !any_player_dropping)
9260   {
9261     if (!local_player->was_waiting)
9262     {
9263       if (!CheckSaveEngineSnapshotToList())
9264         return;
9265
9266       local_player->was_waiting = TRUE;
9267     }
9268   }
9269   else if (any_player_moving || any_player_snapping || any_player_dropping)
9270   {
9271     local_player->was_waiting = FALSE;
9272   }
9273 }
9274
9275 static void CheckSaveEngineSnapshot_SP(boolean murphy_is_waiting,
9276                                        boolean murphy_is_dropping)
9277 {
9278   if (murphy_is_waiting)
9279   {
9280     if (!local_player->was_waiting)
9281     {
9282       if (!CheckSaveEngineSnapshotToList())
9283         return;
9284
9285       local_player->was_waiting = TRUE;
9286     }
9287   }
9288   else
9289   {
9290     local_player->was_waiting = FALSE;
9291   }
9292 }
9293
9294 static void CheckSaveEngineSnapshot_MM(boolean element_clicked,
9295                                        boolean button_released)
9296 {
9297   if (button_released)
9298   {
9299     if (game.snapshot.mode == SNAPSHOT_MODE_EVERY_MOVE)
9300       CheckSaveEngineSnapshotToList();
9301   }
9302   else if (element_clicked)
9303   {
9304     if (game.snapshot.mode != SNAPSHOT_MODE_EVERY_MOVE)
9305       CheckSaveEngineSnapshotToList();
9306
9307     game.snapshot.changed_action = TRUE;
9308   }
9309 }
9310
9311 boolean CheckSingleStepMode_EM(int frame,
9312                                boolean any_player_moving,
9313                                boolean any_player_snapping,
9314                                boolean any_player_dropping)
9315 {
9316   if (tape.single_step && tape.recording && !tape.pausing)
9317     if (frame == 7 && !any_player_dropping && FrameCounter > 6)
9318       TapeTogglePause(TAPE_TOGGLE_AUTOMATIC);
9319
9320   CheckSaveEngineSnapshot_EM(frame, any_player_moving,
9321                              any_player_snapping, any_player_dropping);
9322
9323   return tape.pausing;
9324 }
9325
9326 void CheckSingleStepMode_SP(boolean murphy_is_waiting,
9327                             boolean murphy_is_dropping)
9328 {
9329   boolean murphy_starts_dropping = FALSE;
9330   int i;
9331
9332   for (i = 0; i < MAX_PLAYERS; i++)
9333     if (stored_player[i].force_dropping)
9334       murphy_starts_dropping = TRUE;
9335
9336   if (tape.single_step && tape.recording && !tape.pausing)
9337     if (murphy_is_waiting && !murphy_starts_dropping)
9338       TapeTogglePause(TAPE_TOGGLE_AUTOMATIC);
9339
9340   CheckSaveEngineSnapshot_SP(murphy_is_waiting, murphy_is_dropping);
9341 }
9342
9343 void CheckSingleStepMode_MM(boolean element_clicked,
9344                             boolean button_released)
9345 {
9346   if (tape.single_step && tape.recording && !tape.pausing)
9347     if (button_released)
9348       TapeTogglePause(TAPE_TOGGLE_AUTOMATIC);
9349
9350   CheckSaveEngineSnapshot_MM(element_clicked, button_released);
9351 }
9352
9353 void getGraphicSource_SP(struct GraphicInfo_SP *g_sp,
9354                          int graphic, int sync_frame)
9355 {
9356   int frame = getGraphicAnimationFrame(graphic, sync_frame);
9357
9358   getGraphicSource(graphic, frame, &g_sp->bitmap, &g_sp->src_x, &g_sp->src_y);
9359 }
9360
9361 boolean isNextAnimationFrame_SP(int graphic, int sync_frame)
9362 {
9363   return (IS_NEXT_FRAME(sync_frame, graphic));
9364 }
9365
9366 int getGraphicInfo_Delay(int graphic)
9367 {
9368   return graphic_info[graphic].anim_delay;
9369 }
9370
9371 boolean getGraphicInfo_NewFrame(int x, int y, int graphic)
9372 {
9373   if (!IS_NEW_FRAME(GfxFrame[x][y], graphic))
9374     return FALSE;
9375
9376   if (ANIM_MODE(graphic) & (ANIM_TILED | ANIM_RANDOM_STATIC))
9377     return FALSE;
9378
9379   return TRUE;
9380 }
9381
9382 void PlayMenuSoundExt(int sound)
9383 {
9384   if (sound == SND_UNDEFINED)
9385     return;
9386
9387   if ((!setup.sound_simple && !IS_LOOP_SOUND(sound)) ||
9388       (!setup.sound_loops && IS_LOOP_SOUND(sound)))
9389     return;
9390
9391   if (IS_LOOP_SOUND(sound))
9392     PlaySoundLoop(sound);
9393   else
9394     PlaySound(sound);
9395 }
9396
9397 void PlayMenuSound(void)
9398 {
9399   PlayMenuSoundExt(menu.sound[game_status]);
9400 }
9401
9402 void PlayMenuSoundStereo(int sound, int stereo_position)
9403 {
9404   if (sound == SND_UNDEFINED)
9405     return;
9406
9407   if ((!setup.sound_simple && !IS_LOOP_SOUND(sound)) ||
9408       (!setup.sound_loops && IS_LOOP_SOUND(sound)))
9409     return;
9410
9411   if (IS_LOOP_SOUND(sound))
9412     PlaySoundExt(sound, SOUND_MAX_VOLUME, stereo_position, SND_CTRL_PLAY_LOOP);
9413   else
9414     PlaySoundStereo(sound, stereo_position);
9415 }
9416
9417 void PlayMenuSoundIfLoopExt(int sound)
9418 {
9419   if (sound == SND_UNDEFINED)
9420     return;
9421
9422   if ((!setup.sound_simple && !IS_LOOP_SOUND(sound)) ||
9423       (!setup.sound_loops && IS_LOOP_SOUND(sound)))
9424     return;
9425
9426   if (IS_LOOP_SOUND(sound))
9427     PlaySoundLoop(sound);
9428 }
9429
9430 void PlayMenuSoundIfLoop(void)
9431 {
9432   PlayMenuSoundIfLoopExt(menu.sound[game_status]);
9433 }
9434
9435 void PlayMenuMusicExt(int music)
9436 {
9437   if (music == MUS_UNDEFINED)
9438     return;
9439
9440   if (!setup.sound_music)
9441     return;
9442
9443   if (IS_LOOP_MUSIC(music))
9444     PlayMusicLoop(music);
9445   else
9446     PlayMusic(music);
9447 }
9448
9449 void PlayMenuMusic(void)
9450 {
9451   char *curr_music = getCurrentlyPlayingMusicFilename();
9452   char *next_music = getMusicInfoEntryFilename(menu.music[game_status]);
9453
9454   if (!strEqual(curr_music, next_music))
9455     PlayMenuMusicExt(menu.music[game_status]);
9456 }
9457
9458 void PlayMenuSoundsAndMusic(void)
9459 {
9460   PlayMenuSound();
9461   PlayMenuMusic();
9462 }
9463
9464 static void FadeMenuSounds(void)
9465 {
9466   FadeSounds();
9467 }
9468
9469 static void FadeMenuMusic(void)
9470 {
9471   char *curr_music = getCurrentlyPlayingMusicFilename();
9472   char *next_music = getMusicInfoEntryFilename(menu.music[game_status]);
9473
9474   if (!strEqual(curr_music, next_music))
9475     FadeMusic();
9476 }
9477
9478 void FadeMenuSoundsAndMusic(void)
9479 {
9480   FadeMenuSounds();
9481   FadeMenuMusic();
9482 }
9483
9484 void PlaySoundActivating(void)
9485 {
9486 #if 0
9487   PlaySound(SND_MENU_ITEM_ACTIVATING);
9488 #endif
9489 }
9490
9491 void PlaySoundSelecting(void)
9492 {
9493 #if 0
9494   PlaySound(SND_MENU_ITEM_SELECTING);
9495 #endif
9496 }
9497
9498 void ToggleFullscreenIfNeeded(void)
9499 {
9500   // if setup and video fullscreen state are already matching, nothing do do
9501   if (setup.fullscreen == video.fullscreen_enabled ||
9502       !video.fullscreen_available)
9503     return;
9504
9505   SDLSetWindowFullscreen(setup.fullscreen);
9506
9507   // set setup value according to successfully changed fullscreen mode
9508   setup.fullscreen = video.fullscreen_enabled;
9509 }
9510
9511 void ChangeWindowScalingIfNeeded(void)
9512 {
9513   // if setup and video window scaling are already matching, nothing do do
9514   if (setup.window_scaling_percent == video.window_scaling_percent ||
9515       video.fullscreen_enabled)
9516     return;
9517
9518   SDLSetWindowScaling(setup.window_scaling_percent);
9519
9520   // set setup value according to successfully changed window scaling
9521   setup.window_scaling_percent = video.window_scaling_percent;
9522 }
9523
9524 void ChangeVsyncModeIfNeeded(void)
9525 {
9526   int setup_vsync_mode = VSYNC_MODE_STR_TO_INT(setup.vsync_mode);
9527   int video_vsync_mode = video.vsync_mode;
9528
9529   // if setup and video vsync mode are already matching, nothing do do
9530   if (setup_vsync_mode == video_vsync_mode)
9531     return;
9532
9533   // if renderer is using OpenGL, vsync mode can directly be changed
9534   SDLSetScreenVsyncMode(setup.vsync_mode);
9535
9536   // if vsync mode unchanged, try re-creating renderer to set vsync mode
9537   if (video.vsync_mode == video_vsync_mode)
9538   {
9539     Bitmap *tmp_backbuffer = CreateBitmap(WIN_XSIZE, WIN_YSIZE, DEFAULT_DEPTH);
9540
9541     // save backbuffer content which gets lost when re-creating screen
9542     BlitBitmap(backbuffer, tmp_backbuffer, 0, 0, WIN_XSIZE, WIN_YSIZE, 0, 0);
9543
9544     // force re-creating screen and renderer to set new vsync mode
9545     video.fullscreen_enabled = !setup.fullscreen;
9546
9547     // when creating new renderer, destroy textures linked to old renderer
9548     FreeAllImageTextures();     // needs old renderer to free the textures
9549
9550     // re-create screen and renderer (including change of vsync mode)
9551     ChangeVideoModeIfNeeded(setup.fullscreen);
9552
9553     // set setup value according to successfully changed fullscreen mode
9554     setup.fullscreen = video.fullscreen_enabled;
9555
9556     // restore backbuffer content from temporary backbuffer backup bitmap
9557     BlitBitmap(tmp_backbuffer, backbuffer, 0, 0, WIN_XSIZE, WIN_YSIZE, 0, 0);
9558     FreeBitmap(tmp_backbuffer);
9559
9560     // update visible window/screen
9561     BlitBitmap(backbuffer, window, 0, 0, WIN_XSIZE, WIN_YSIZE, 0, 0);
9562
9563     // when changing vsync mode, re-create textures for new renderer
9564     InitImageTextures();
9565   }
9566
9567   // set setup value according to successfully changed vsync mode
9568   setup.vsync_mode = VSYNC_MODE_INT_TO_STR(video.vsync_mode);
9569 }
9570
9571 static void JoinRectangles(int *x, int *y, int *width, int *height,
9572                            int x2, int y2, int width2, int height2)
9573 {
9574   // do not join with "off-screen" rectangle
9575   if (x2 == -1 || y2 == -1)
9576     return;
9577
9578   *x = MIN(*x, x2);
9579   *y = MIN(*y, y2);
9580   *width = MAX(*width, width2);
9581   *height = MAX(*height, height2);
9582 }
9583
9584 void SetAnimStatus(int anim_status_new)
9585 {
9586   if (anim_status_new == GAME_MODE_MAIN)
9587     anim_status_new = GAME_MODE_PSEUDO_MAINONLY;
9588   else if (anim_status_new == GAME_MODE_NAMES)
9589     anim_status_new = GAME_MODE_PSEUDO_NAMESONLY;
9590   else if (anim_status_new == GAME_MODE_SCORES)
9591     anim_status_new = GAME_MODE_PSEUDO_SCORESOLD;
9592
9593   global.anim_status_next = anim_status_new;
9594
9595   // directly set screen modes that are entered without fading
9596   if ((global.anim_status      == GAME_MODE_PSEUDO_MAINONLY &&
9597        global.anim_status_next == GAME_MODE_PSEUDO_TYPENAME) ||
9598       (global.anim_status      == GAME_MODE_PSEUDO_TYPENAME &&
9599        global.anim_status_next == GAME_MODE_PSEUDO_MAINONLY) ||
9600       (global.anim_status      == GAME_MODE_PSEUDO_NAMESONLY &&
9601        global.anim_status_next == GAME_MODE_PSEUDO_TYPENAMES) ||
9602       (global.anim_status      == GAME_MODE_PSEUDO_TYPENAMES &&
9603        global.anim_status_next == GAME_MODE_PSEUDO_NAMESONLY))
9604     global.anim_status = global.anim_status_next;
9605 }
9606
9607 void SetGameStatus(int game_status_new)
9608 {
9609   if (game_status_new != game_status)
9610     game_status_last_screen = game_status;
9611
9612   game_status = game_status_new;
9613
9614   SetAnimStatus(game_status_new);
9615 }
9616
9617 void SetFontStatus(int game_status_new)
9618 {
9619   static int last_game_status = -1;
9620
9621   if (game_status_new != -1)
9622   {
9623     // set game status for font use after storing last game status
9624     last_game_status = game_status;
9625     game_status = game_status_new;
9626   }
9627   else
9628   {
9629     // reset game status after font use from last stored game status
9630     game_status = last_game_status;
9631   }
9632 }
9633
9634 void ResetFontStatus(void)
9635 {
9636   SetFontStatus(-1);
9637 }
9638
9639 void SetLevelSetInfo(char *identifier, int level_nr)
9640 {
9641   setString(&levelset.identifier, identifier);
9642
9643   levelset.level_nr = level_nr;
9644 }
9645
9646 boolean CheckIfAllViewportsHaveChanged(void)
9647 {
9648   // if game status has not changed, viewports have not changed either
9649   if (game_status == game_status_last)
9650     return FALSE;
9651
9652   // check if all viewports have changed with current game status
9653
9654   struct RectWithBorder *vp_playfield = &viewport.playfield[game_status];
9655   struct RectWithBorder *vp_door_1    = &viewport.door_1[game_status];
9656   struct RectWithBorder *vp_door_2    = &viewport.door_2[game_status];
9657   int new_real_sx       = vp_playfield->x;
9658   int new_real_sy       = vp_playfield->y;
9659   int new_full_sxsize   = vp_playfield->width;
9660   int new_full_sysize   = vp_playfield->height;
9661   int new_dx            = vp_door_1->x;
9662   int new_dy            = vp_door_1->y;
9663   int new_dxsize        = vp_door_1->width;
9664   int new_dysize        = vp_door_1->height;
9665   int new_vx            = vp_door_2->x;
9666   int new_vy            = vp_door_2->y;
9667   int new_vxsize        = vp_door_2->width;
9668   int new_vysize        = vp_door_2->height;
9669
9670   boolean playfield_viewport_has_changed =
9671     (new_real_sx != REAL_SX ||
9672      new_real_sy != REAL_SY ||
9673      new_full_sxsize != FULL_SXSIZE ||
9674      new_full_sysize != FULL_SYSIZE);
9675
9676   boolean door_1_viewport_has_changed =
9677     (new_dx != DX ||
9678      new_dy != DY ||
9679      new_dxsize != DXSIZE ||
9680      new_dysize != DYSIZE);
9681
9682   boolean door_2_viewport_has_changed =
9683     (new_vx != VX ||
9684      new_vy != VY ||
9685      new_vxsize != VXSIZE ||
9686      new_vysize != VYSIZE ||
9687      game_status_last == GAME_MODE_EDITOR);
9688
9689   return (playfield_viewport_has_changed &&
9690           door_1_viewport_has_changed &&
9691           door_2_viewport_has_changed);
9692 }
9693
9694 boolean CheckFadeAll(void)
9695 {
9696   return (CheckIfGlobalBorderHasChanged() ||
9697           CheckIfAllViewportsHaveChanged());
9698 }
9699
9700 void ChangeViewportPropertiesIfNeeded(void)
9701 {
9702   boolean use_mini_tilesize = (level.game_engine_type == GAME_ENGINE_TYPE_MM ?
9703                                FALSE : setup.small_game_graphics);
9704   int gfx_game_mode = getGlobalGameStatus(game_status);
9705   int gfx_game_mode2 = (gfx_game_mode == GAME_MODE_EDITOR ? GAME_MODE_DEFAULT :
9706                         gfx_game_mode);
9707   struct RectWithBorder *vp_window    = &viewport.window[gfx_game_mode];
9708   struct RectWithBorder *vp_playfield = &viewport.playfield[gfx_game_mode];
9709   struct RectWithBorder *vp_door_1    = &viewport.door_1[gfx_game_mode];
9710   struct RectWithBorder *vp_door_2    = &viewport.door_2[gfx_game_mode2];
9711   struct RectWithBorder *vp_door_3    = &viewport.door_2[GAME_MODE_EDITOR];
9712   int new_win_xsize     = vp_window->width;
9713   int new_win_ysize     = vp_window->height;
9714   int border_left       = vp_playfield->border_left;
9715   int border_right      = vp_playfield->border_right;
9716   int border_top        = vp_playfield->border_top;
9717   int border_bottom     = vp_playfield->border_bottom;
9718   int new_sx            = vp_playfield->x      + border_left;
9719   int new_sy            = vp_playfield->y      + border_top;
9720   int new_sxsize        = vp_playfield->width  - border_left - border_right;
9721   int new_sysize        = vp_playfield->height - border_top  - border_bottom;
9722   int new_real_sx       = vp_playfield->x;
9723   int new_real_sy       = vp_playfield->y;
9724   int new_full_sxsize   = vp_playfield->width;
9725   int new_full_sysize   = vp_playfield->height;
9726   int new_dx            = vp_door_1->x;
9727   int new_dy            = vp_door_1->y;
9728   int new_dxsize        = vp_door_1->width;
9729   int new_dysize        = vp_door_1->height;
9730   int new_vx            = vp_door_2->x;
9731   int new_vy            = vp_door_2->y;
9732   int new_vxsize        = vp_door_2->width;
9733   int new_vysize        = vp_door_2->height;
9734   int new_ex            = vp_door_3->x;
9735   int new_ey            = vp_door_3->y;
9736   int new_exsize        = vp_door_3->width;
9737   int new_eysize        = vp_door_3->height;
9738   int new_tilesize_var = (use_mini_tilesize ? MINI_TILESIZE : game.tile_size);
9739   int tilesize = (gfx_game_mode == GAME_MODE_PLAYING ? new_tilesize_var :
9740                   gfx_game_mode == GAME_MODE_EDITOR ? MINI_TILESIZE : TILESIZE);
9741   int new_scr_fieldx = new_sxsize / tilesize;
9742   int new_scr_fieldy = new_sysize / tilesize;
9743   int new_scr_fieldx_buffers = new_sxsize / new_tilesize_var;
9744   int new_scr_fieldy_buffers = new_sysize / new_tilesize_var;
9745   boolean init_gfx_buffers = FALSE;
9746   boolean init_video_buffer = FALSE;
9747   boolean init_gadgets_and_anims = FALSE;
9748   boolean init_em_graphics = FALSE;
9749
9750   if (new_win_xsize != WIN_XSIZE ||
9751       new_win_ysize != WIN_YSIZE)
9752   {
9753     WIN_XSIZE = new_win_xsize;
9754     WIN_YSIZE = new_win_ysize;
9755
9756     init_video_buffer = TRUE;
9757     init_gfx_buffers = TRUE;
9758     init_gadgets_and_anims = TRUE;
9759
9760     // Debug("tools:viewport", "video: init_video_buffer, init_gfx_buffers");
9761   }
9762
9763   if (new_scr_fieldx != SCR_FIELDX ||
9764       new_scr_fieldy != SCR_FIELDY)
9765   {
9766     // this always toggles between MAIN and GAME when using small tile size
9767
9768     SCR_FIELDX = new_scr_fieldx;
9769     SCR_FIELDY = new_scr_fieldy;
9770
9771     // Debug("tools:viewport", "new_scr_fieldx != SCR_FIELDX ...");
9772   }
9773
9774   if (new_sx != SX ||
9775       new_sy != SY ||
9776       new_dx != DX ||
9777       new_dy != DY ||
9778       new_vx != VX ||
9779       new_vy != VY ||
9780       new_ex != EX ||
9781       new_ey != EY ||
9782       new_sxsize != SXSIZE ||
9783       new_sysize != SYSIZE ||
9784       new_dxsize != DXSIZE ||
9785       new_dysize != DYSIZE ||
9786       new_vxsize != VXSIZE ||
9787       new_vysize != VYSIZE ||
9788       new_exsize != EXSIZE ||
9789       new_eysize != EYSIZE ||
9790       new_real_sx != REAL_SX ||
9791       new_real_sy != REAL_SY ||
9792       new_full_sxsize != FULL_SXSIZE ||
9793       new_full_sysize != FULL_SYSIZE ||
9794       new_tilesize_var != TILESIZE_VAR
9795       )
9796   {
9797     // ------------------------------------------------------------------------
9798     // determine next fading area for changed viewport definitions
9799     // ------------------------------------------------------------------------
9800
9801     // start with current playfield area (default fading area)
9802     FADE_SX = REAL_SX;
9803     FADE_SY = REAL_SY;
9804     FADE_SXSIZE = FULL_SXSIZE;
9805     FADE_SYSIZE = FULL_SYSIZE;
9806
9807     // add new playfield area if position or size has changed
9808     if (new_real_sx != REAL_SX || new_real_sy != REAL_SY ||
9809         new_full_sxsize != FULL_SXSIZE || new_full_sysize != FULL_SYSIZE)
9810     {
9811       JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
9812                      new_real_sx, new_real_sy, new_full_sxsize,new_full_sysize);
9813     }
9814
9815     // add current and new door 1 area if position or size has changed
9816     if (new_dx != DX || new_dy != DY ||
9817         new_dxsize != DXSIZE || new_dysize != DYSIZE)
9818     {
9819       JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
9820                      DX, DY, DXSIZE, DYSIZE);
9821       JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
9822                      new_dx, new_dy, new_dxsize, new_dysize);
9823     }
9824
9825     // add current and new door 2 area if position or size has changed
9826     if (new_vx != VX || new_vy != VY ||
9827         new_vxsize != VXSIZE || new_vysize != VYSIZE)
9828     {
9829       JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
9830                      VX, VY, VXSIZE, VYSIZE);
9831       JoinRectangles(&FADE_SX, &FADE_SY, &FADE_SXSIZE, &FADE_SYSIZE,
9832                      new_vx, new_vy, new_vxsize, new_vysize);
9833     }
9834
9835     // ------------------------------------------------------------------------
9836     // handle changed tile size
9837     // ------------------------------------------------------------------------
9838
9839     if (new_tilesize_var != TILESIZE_VAR)
9840     {
9841       // Debug("tools:viewport", "new_tilesize_var != TILESIZE_VAR");
9842
9843       // changing tile size invalidates scroll values of engine snapshots
9844       FreeEngineSnapshotSingle();
9845
9846       // changing tile size requires update of graphic mapping for EM engine
9847       init_em_graphics = TRUE;
9848     }
9849
9850     SX = new_sx;
9851     SY = new_sy;
9852     DX = new_dx;
9853     DY = new_dy;
9854     VX = new_vx;
9855     VY = new_vy;
9856     EX = new_ex;
9857     EY = new_ey;
9858     SXSIZE = new_sxsize;
9859     SYSIZE = new_sysize;
9860     DXSIZE = new_dxsize;
9861     DYSIZE = new_dysize;
9862     VXSIZE = new_vxsize;
9863     VYSIZE = new_vysize;
9864     EXSIZE = new_exsize;
9865     EYSIZE = new_eysize;
9866     REAL_SX = new_real_sx;
9867     REAL_SY = new_real_sy;
9868     FULL_SXSIZE = new_full_sxsize;
9869     FULL_SYSIZE = new_full_sysize;
9870     TILESIZE_VAR = new_tilesize_var;
9871
9872     init_gfx_buffers = TRUE;
9873     init_gadgets_and_anims = TRUE;
9874
9875     // Debug("tools:viewport", "viewports: init_gfx_buffers");
9876     // Debug("tools:viewport", "viewports: init_gadgets_and_anims");
9877   }
9878
9879   if (init_gfx_buffers)
9880   {
9881     // Debug("tools:viewport", "init_gfx_buffers");
9882
9883     SCR_FIELDX = new_scr_fieldx_buffers;
9884     SCR_FIELDY = new_scr_fieldy_buffers;
9885
9886     InitGfxBuffers();
9887
9888     SCR_FIELDX = new_scr_fieldx;
9889     SCR_FIELDY = new_scr_fieldy;
9890
9891     SetDrawDeactivationMask(REDRAW_NONE);
9892     SetDrawBackgroundMask(REDRAW_FIELD);
9893   }
9894
9895   if (init_video_buffer)
9896   {
9897     // Debug("tools:viewport", "init_video_buffer");
9898
9899     FreeAllImageTextures();     // needs old renderer to free the textures
9900
9901     InitVideoBuffer(WIN_XSIZE, WIN_YSIZE, DEFAULT_DEPTH, setup.fullscreen);
9902     InitImageTextures();
9903   }
9904
9905   if (init_gadgets_and_anims)
9906   {
9907     // Debug("tools:viewport", "init_gadgets_and_anims");
9908
9909     InitGadgets();
9910     InitGlobalAnimations();
9911   }
9912
9913   if (init_em_graphics)
9914   {
9915     InitGraphicInfo_EM();
9916   }
9917 }
9918
9919 void OpenURL(char *url)
9920 {
9921 #if SDL_VERSION_ATLEAST(2,0,14)
9922   SDL_OpenURL(url);
9923 #else
9924   Warn("SDL_OpenURL(\"%s\") not supported by SDL %d.%d.%d!",
9925        url, SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL);
9926   Warn("Please upgrade to at least SDL 2.0.14 for URL support!");
9927 #endif
9928 }
9929
9930 void OpenURLFromHash(SetupFileHash *hash, int hash_key)
9931 {
9932   OpenURL(getHashEntry(hash, int2str(hash_key, 0)));
9933 }
9934
9935
9936 // ============================================================================
9937 // tests
9938 // ============================================================================
9939
9940 #if defined(PLATFORM_WINDOWS)
9941 /* FILETIME of Jan 1 1970 00:00:00. */
9942 static const unsigned __int64 epoch = ((unsigned __int64) 116444736000000000ULL);
9943
9944 /*
9945  * timezone information is stored outside the kernel so tzp isn't used anymore.
9946  *
9947  * Note: this function is not for Win32 high precision timing purpose. See
9948  * elapsed_time().
9949  */
9950 static int gettimeofday_windows(struct timeval * tp, struct timezone * tzp)
9951 {
9952   FILETIME    file_time;
9953   SYSTEMTIME  system_time;
9954   ULARGE_INTEGER ularge;
9955
9956   GetSystemTime(&system_time);
9957   SystemTimeToFileTime(&system_time, &file_time);
9958   ularge.LowPart = file_time.dwLowDateTime;
9959   ularge.HighPart = file_time.dwHighDateTime;
9960
9961   tp->tv_sec = (long) ((ularge.QuadPart - epoch) / 10000000L);
9962   tp->tv_usec = (long) (system_time.wMilliseconds * 1000);
9963
9964   return 0;
9965 }
9966 #endif
9967
9968 static char *test_init_uuid_random_function_simple(void)
9969 {
9970   static char seed_text[100];
9971   unsigned int seed = InitSimpleRandom(NEW_RANDOMIZE);
9972
9973   sprintf(seed_text, "%d", seed);
9974
9975   return seed_text;
9976 }
9977
9978 static char *test_init_uuid_random_function_better(void)
9979 {
9980   static char seed_text[100];
9981   struct timeval current_time;
9982
9983   gettimeofday(&current_time, NULL);
9984
9985   prng_seed_bytes(&current_time, sizeof(current_time));
9986
9987   sprintf(seed_text, "%ld.%ld",
9988           (long)current_time.tv_sec,
9989           (long)current_time.tv_usec);
9990
9991   return seed_text;
9992 }
9993
9994 #if defined(PLATFORM_WINDOWS)
9995 static char *test_init_uuid_random_function_better_windows(void)
9996 {
9997   static char seed_text[100];
9998   struct timeval current_time;
9999
10000   gettimeofday_windows(&current_time, NULL);
10001
10002   prng_seed_bytes(&current_time, sizeof(current_time));
10003
10004   sprintf(seed_text, "%ld.%ld",
10005           (long)current_time.tv_sec,
10006           (long)current_time.tv_usec);
10007
10008   return seed_text;
10009 }
10010 #endif
10011
10012 static unsigned int test_uuid_random_function_simple(int max)
10013 {
10014   return GetSimpleRandom(max);
10015 }
10016
10017 static unsigned int test_uuid_random_function_better(int max)
10018 {
10019   return (max > 0 ? prng_get_uint() % max : 0);
10020 }
10021
10022 #if defined(PLATFORM_WINDOWS)
10023 #define NUM_UUID_TESTS                  3
10024 #else
10025 #define NUM_UUID_TESTS                  2
10026 #endif
10027
10028 static void TestGeneratingUUIDs_RunTest(int nr, int always_seed, int num_uuids)
10029 {
10030   struct hashtable *hash_seeds =
10031     create_hashtable(16, 0.75, get_hash_from_key, hash_keys_are_equal);
10032   struct hashtable *hash_uuids =
10033     create_hashtable(16, 0.75, get_hash_from_key, hash_keys_are_equal);
10034   static char message[100];
10035   int i;
10036
10037   char *random_name = (nr == 0 ? "simple" : "better");
10038   char *random_type = (always_seed ? "always" : "only once");
10039   char *(*init_random_function)(void) =
10040     (nr == 0 ?
10041      test_init_uuid_random_function_simple :
10042      test_init_uuid_random_function_better);
10043   unsigned int (*random_function)(int) =
10044     (nr == 0 ?
10045      test_uuid_random_function_simple :
10046      test_uuid_random_function_better);
10047   int xpos = 40;
10048
10049 #if defined(PLATFORM_WINDOWS)
10050   if (nr == 2)
10051   {
10052     random_name = "windows";
10053     init_random_function = test_init_uuid_random_function_better_windows;
10054   }
10055 #endif
10056
10057   ClearField();
10058
10059   DrawTextF(xpos, 40, FC_GREEN, "Test: Generating UUIDs");
10060   DrawTextF(xpos, 80, FC_YELLOW, "Test %d.%d:", nr + 1, always_seed + 1);
10061
10062   DrawTextF(xpos, 100, FC_YELLOW, "Random Generator Name: %s", random_name);
10063   DrawTextF(xpos, 120, FC_YELLOW, "Seeding Random Generator: %s", random_type);
10064   DrawTextF(xpos, 140, FC_YELLOW, "Number of UUIDs generated: %d", num_uuids);
10065
10066   DrawTextF(xpos, 180, FC_GREEN, "Please wait ...");
10067
10068   BackToFront();
10069
10070   // always initialize random number generator at least once
10071   init_random_function();
10072
10073   unsigned int time_start = SDL_GetTicks();
10074
10075   for (i = 0; i < num_uuids; i++)
10076   {
10077     if (always_seed)
10078     {
10079       char *seed = getStringCopy(init_random_function());
10080
10081       hashtable_remove(hash_seeds, seed);
10082       hashtable_insert(hash_seeds, seed, "1");
10083     }
10084
10085     char *uuid = getStringCopy(getUUIDExt(random_function));
10086
10087     hashtable_remove(hash_uuids, uuid);
10088     hashtable_insert(hash_uuids, uuid, "1");
10089   }
10090
10091   int num_unique_seeds = hashtable_count(hash_seeds);
10092   int num_unique_uuids = hashtable_count(hash_uuids);
10093
10094   unsigned int time_needed = SDL_GetTicks() - time_start;
10095
10096   DrawTextF(xpos, 220, FC_YELLOW, "Time needed: %d ms", time_needed);
10097
10098   DrawTextF(xpos, 240, FC_YELLOW, "Number of unique UUIDs: %d", num_unique_uuids);
10099
10100   if (always_seed)
10101     DrawTextF(xpos, 260, FC_YELLOW, "Number of unique seeds: %d", num_unique_seeds);
10102
10103   if (nr == NUM_UUID_TESTS - 1 && always_seed)
10104     DrawTextF(xpos, 300, FC_GREEN, "All tests done!");
10105   else
10106     DrawTextF(xpos, 300, FC_GREEN, "Confirm dialog for next test ...");
10107
10108   sprintf(message, "Test %d.%d finished!", nr + 1, always_seed + 1);
10109
10110   Request(message, REQ_CONFIRM);
10111
10112   hashtable_destroy(hash_seeds, 0);
10113   hashtable_destroy(hash_uuids, 0);
10114 }
10115
10116 void TestGeneratingUUIDs(void)
10117 {
10118   int num_uuids = 1000000;
10119   int i, j;
10120
10121   for (i = 0; i < NUM_UUID_TESTS; i++)
10122     for (j = 0; j < 2; j++)
10123       TestGeneratingUUIDs_RunTest(i, j, num_uuids);
10124
10125   CloseAllAndExit(0);
10126 }