rnd-20040927-1-src
[rocksndiamonds.git] / src / tools.c
index 8f3798a41f6e23541994274f933a96315c85808a..ab5086c0703788f08aacb0df01be8cf4d06ed33d 100644 (file)
@@ -40,10 +40,28 @@ static int el_act2crm(int, int);
 static struct GadgetInfo *tool_gadget[NUM_TOOL_BUTTONS];
 static int request_gadget_id = -1;
 
+static char *print_if_not_empty(int element)
+{
+  static char *s = NULL;
+  char *token_name = element_info[element].token_name;
+
+  if (s != NULL)
+    free(s);
+
+  s = checked_malloc(strlen(token_name) + 10 + 1);
+
+  if (element != EL_EMPTY)
+    sprintf(s, "%d\t['%s']", element, token_name);
+  else
+    sprintf(s, "%d", element);
+
+  return s;
+}
+
 void DumpTile(int x, int y)
 {
   int sx = SCREENX(x);
-  int sy = SCREENX(y);
+  int sy = SCREENY(y);
 
   printf_line("-", 79);
   printf("Field Info: SCREEN(%d, %d), LEVEL(%d, %d)\n", sx, sy, x, y);
@@ -57,12 +75,12 @@ void DumpTile(int x, int y)
     return;
   }
 
-  printf("  Feld:        %d ['%s']\n", Feld[x][y],
+  printf("  Feld:        %d\t['%s']\n", Feld[x][y],
         element_info[Feld[x][y]].token_name);
-  printf("  Back:        %d\n", Back[x][y]);
-  printf("  Store:       %d\n", Store[x][y]);
-  printf("  Store2:      %d\n", Store2[x][y]);
-  printf("  StorePlayer: %d\n", StorePlayer[x][y]);
+  printf("  Back:        %s\n", print_if_not_empty(Back[x][y]));
+  printf("  Store:       %s\n", print_if_not_empty(Store[x][y]));
+  printf("  Store2:      %s\n", print_if_not_empty(Store2[x][y]));
+  printf("  StorePlayer: %s\n", print_if_not_empty(StorePlayer[x][y]));
   printf("  MovPos:      %d\n", MovPos[x][y]);
   printf("  MovDir:      %d\n", MovDir[x][y]);
   printf("  MovDelay:    %d\n", MovDelay[x][y]);
@@ -256,28 +274,33 @@ void BackToFront()
   {
     if (redraw_mask & REDRAW_DOOR_1)
       BlitBitmap(backbuffer, window, DX, DY, DXSIZE, DYSIZE, DX, DY);
+
     if (redraw_mask & REDRAW_DOOR_2)
     {
+#if 0
       if ((redraw_mask & REDRAW_DOOR_2) == REDRAW_DOOR_2)
-       BlitBitmap(backbuffer, window, VX,VY, VXSIZE,VYSIZE, VX,VY);
+#endif
+       BlitBitmap(backbuffer, window, VX, VY, VXSIZE, VYSIZE, VX, VY);
+#if 0
       else
       {
        if (redraw_mask & REDRAW_VIDEO_1)
          BlitBitmap(backbuffer, window,
-                    VX+VIDEO_DISPLAY1_XPOS,VY+VIDEO_DISPLAY1_YPOS,
-                    VIDEO_DISPLAY_XSIZE,VIDEO_DISPLAY_YSIZE,
-                    VX+VIDEO_DISPLAY1_XPOS,VY+VIDEO_DISPLAY1_YPOS);
+                    VX + VIDEO_DISPLAY1_XPOS, VY + VIDEO_DISPLAY1_YPOS,
+                    VIDEO_DISPLAY_XSIZE, VIDEO_DISPLAY_YSIZE,
+                    VX + VIDEO_DISPLAY1_XPOS, VY + VIDEO_DISPLAY1_YPOS);
        if (redraw_mask & REDRAW_VIDEO_2)
          BlitBitmap(backbuffer, window,
-                    VX+VIDEO_DISPLAY2_XPOS,VY+VIDEO_DISPLAY2_YPOS,
-                    VIDEO_DISPLAY_XSIZE,VIDEO_DISPLAY_YSIZE,
-                    VX+VIDEO_DISPLAY2_XPOS,VY+VIDEO_DISPLAY2_YPOS);
+                    VX + VIDEO_DISPLAY2_XPOS, VY + VIDEO_DISPLAY2_YPOS,
+                    VIDEO_DISPLAY_XSIZE, VIDEO_DISPLAY_YSIZE,
+                    VX + VIDEO_DISPLAY2_XPOS, VY + VIDEO_DISPLAY2_YPOS);
        if (redraw_mask & REDRAW_VIDEO_3)
          BlitBitmap(backbuffer, window,
-                    VX+VIDEO_CONTROL_XPOS,VY+VIDEO_CONTROL_YPOS,
-                    VIDEO_CONTROL_XSIZE,VIDEO_CONTROL_YSIZE,
-                    VX+VIDEO_CONTROL_XPOS,VY+VIDEO_CONTROL_YPOS);
+                    VX + VIDEO_CONTROL_XPOS, VY + VIDEO_CONTROL_YPOS,
+                    VIDEO_CONTROL_XSIZE, VIDEO_CONTROL_YSIZE,
+                    VX + VIDEO_CONTROL_XPOS, VY + VIDEO_CONTROL_YPOS);
       }
+#endif
     }
 
     if (redraw_mask & REDRAW_DOOR_3)
@@ -297,10 +320,10 @@ void BackToFront()
   if (redraw_mask & REDRAW_TILES)
   {
     for (x = 0; x < SCR_FIELDX; x++)
-      for (y =0 ; y < SCR_FIELDY; y++)
+      for (y = 0 ; y < SCR_FIELDY; y++)
        if (redraw[redraw_x1 + x][redraw_y1 + y])
          BlitBitmap(buffer, window,
-                    FX + x * TILEX, FX + y * TILEY, TILEX, TILEY,
+                    FX + x * TILEX, FY + y * TILEY, TILEX, TILEY,
                     SX + x * TILEX, SY + y * TILEY);
   }
 
@@ -867,17 +890,41 @@ void DrawPlayer(struct PlayerInfo *player)
   /* draw elements the player is just walking/passing through/under          */
   /* ----------------------------------------------------------------------- */
 
-  /* handle the field the player is leaving ... */
-  if (player_is_moving && IS_ACCESSIBLE_INSIDE(last_element))
-    DrawLevelField(last_jx, last_jy);
-  else if (player_is_moving && IS_ACCESSIBLE_UNDER(last_element))
-    DrawLevelFieldThruMask(last_jx, last_jy);
+  if (player_is_moving)
+  {
+    /* handle the field the player is leaving ... */
+    if (IS_ACCESSIBLE_INSIDE(last_element))
+      DrawLevelField(last_jx, last_jy);
+    else if (IS_ACCESSIBLE_UNDER(last_element))
+      DrawLevelFieldThruMask(last_jx, last_jy);
+  }
+
+#if 1
+  /* do not redraw accessible elements if the player is just pushing them */
+  if (!player_is_moving || !player->is_pushing)
+  {
+    /* ... and the field the player is entering */
+    if (IS_ACCESSIBLE_INSIDE(element))
+      DrawLevelField(jx, jy);
+    else if (IS_ACCESSIBLE_UNDER(element))
+      DrawLevelFieldThruMask(jx, jy);
+  }
+
+#else
 
-  /* ... and the field the player is entering */
-  if (IS_ACCESSIBLE_INSIDE(element))
-    DrawLevelField(jx, jy);
-  else if (IS_ACCESSIBLE_UNDER(element))
-    DrawLevelFieldThruMask(jx, jy);
+#if 0
+  /* !!! I have forgotton what this should be good for !!! */
+  /* !!! causes player being visible when pushing from within tubes !!! */
+  if (!player->is_pushing)
+#endif
+  {
+    /* ... and the field the player is entering */
+    if (IS_ACCESSIBLE_INSIDE(element))
+      DrawLevelField(jx, jy);
+    else if (IS_ACCESSIBLE_UNDER(element))
+      DrawLevelFieldThruMask(jx, jy);
+  }
+#endif
 
   if (setup.direct_draw)
   {
@@ -1655,10 +1702,15 @@ void DrawEnvelopeBackground(int envelope_nr, int startx, int starty,
 void AnimateEnvelope(int envelope_nr, int anim_mode, int action)
 {
   int graphic = IMG_BACKGROUND_ENVELOPE_1 + envelope_nr;
+#if 1
+  Bitmap *src_bitmap = graphic_info[graphic].bitmap;
+  int mask_mode = (src_bitmap != NULL ? BLIT_MASKED : BLIT_ON_BACKGROUND);
+#else
   boolean draw_masked = graphic_info[graphic].draw_masked;
   int mask_mode = (draw_masked ? BLIT_MASKED : BLIT_ON_BACKGROUND);
+#endif
   boolean ffwd_delay = (tape.playing && tape.fast_forward);
-  boolean no_delay = (tape.index_search);
+  boolean no_delay = (tape.warp_forward);
   unsigned long anim_delay = 0;
   int frame_delay_value = (ffwd_delay ? FfwdFrameDelay : GameFrameDelay);
   int anim_delay_value = (no_delay ? 0 : frame_delay_value);
@@ -1710,7 +1762,7 @@ void ShowEnvelope(int envelope_nr)
   int sound_opening = element_info[element].sound[ACTION_OPENING];
   int sound_closing = element_info[element].sound[ACTION_CLOSING];
   boolean ffwd_delay = (tape.playing && tape.fast_forward);
-  boolean no_delay = (tape.index_search);
+  boolean no_delay = (tape.warp_forward);
   int normal_delay_value = ONE_SECOND_DELAY / (ffwd_delay ? 2 : 1);
   int wait_delay_value = (no_delay ? 0 : normal_delay_value);
   int anim_mode = graphic_info[graphic].anim_mode;
@@ -2050,15 +2102,21 @@ boolean Request(char *text, unsigned int req_state)
     }
   }
 
+#if 1
+  /* disable deactivated drawing when quick-loading level tape recording */
+  if (tape.playing && tape.deactivate_display)
+    TapeDeactivateDisplayOff(TRUE);
+#endif
+
 #if 1
   SetMouseCursor(CURSOR_DEFAULT);
 #endif
 
-#if defined(PLATFORM_UNIX)
+#if defined(NETWORK_AVALIABLE)
   /* pause network game while waiting for request to answer */
   if (options.network &&
       game_status == GAME_MODE_PLAYING &&
-      req_state & REQUEST_WAIT_FOR)
+      req_state & REQUEST_WAIT_FOR_INPUT)
     SendToServer_PausePlaying();
 #endif
 
@@ -2070,12 +2128,15 @@ boolean Request(char *text, unsigned int req_state)
 
   UnmapAllGadgets();
 
-  CloseDoor(DOOR_CLOSE_1);
+  if (old_door_state & DOOR_OPEN_1)
+  {
+    CloseDoor(DOOR_CLOSE_1);
 
-  /* save old door content */
-  BlitBitmap(bitmap_db_door, bitmap_db_door,
-            DOOR_GFX_PAGEX1, DOOR_GFX_PAGEY1, DXSIZE, DYSIZE,
-            DOOR_GFX_PAGEX2, DOOR_GFX_PAGEY1);
+    /* save old door content */
+    BlitBitmap(bitmap_db_door, bitmap_db_door,
+              DOOR_GFX_PAGEX1, DOOR_GFX_PAGEY1, DXSIZE, DYSIZE,
+              DOOR_GFX_PAGEX2, DOOR_GFX_PAGEY1);
+  }
 
   SetDrawBackgroundMask(REDRAW_FIELD | REDRAW_DOOR_1);
 
@@ -2148,7 +2209,7 @@ boolean Request(char *text, unsigned int req_state)
   ClearEventQueue();
 #endif
 
-  if (!(req_state & REQUEST_WAIT_FOR))
+  if (!(req_state & REQUEST_WAIT_FOR_INPUT))
   {
     SetDrawBackgroundMask(REDRAW_FIELD);
 
@@ -2292,59 +2353,70 @@ boolean Request(char *text, unsigned int req_state)
   {
     CloseDoor(DOOR_CLOSE_1);
 
-    if (!(req_state & REQ_STAY_CLOSED) && (old_door_state & DOOR_OPEN_1))
-    {
-      BlitBitmap(bitmap_db_door, bitmap_db_door,
-                DOOR_GFX_PAGEX2,DOOR_GFX_PAGEY1, DXSIZE,DYSIZE,
-                DOOR_GFX_PAGEX1,DOOR_GFX_PAGEY1);
-      OpenDoor(DOOR_OPEN_1);
-    }
+    if (((old_door_state & DOOR_OPEN_1) && !(req_state & REQ_STAY_CLOSED)) ||
+       (req_state & REQ_REOPEN))
+      OpenDoor(DOOR_OPEN_1 | DOOR_COPY_BACK);
   }
 
   RemapAllGadgets();
 
   SetDrawBackgroundMask(REDRAW_FIELD);
 
-#if defined(PLATFORM_UNIX)
+#if defined(NETWORK_AVALIABLE)
   /* continue network game after request */
   if (options.network &&
       game_status == GAME_MODE_PLAYING &&
-      req_state & REQUEST_WAIT_FOR)
+      req_state & REQUEST_WAIT_FOR_INPUT)
     SendToServer_ContinuePlaying();
 #endif
 
+#if 1
+  /* restore deactivated drawing when quick-loading level tape recording */
+  if (tape.playing && tape.deactivate_display)
+    TapeDeactivateDisplayOn();
+#endif
+
   return result;
 }
 
 unsigned int OpenDoor(unsigned int door_state)
 {
-  unsigned int new_door_state;
-
   if (door_state & DOOR_COPY_BACK)
   {
-    BlitBitmap(bitmap_db_door, bitmap_db_door,
-              DOOR_GFX_PAGEX2, DOOR_GFX_PAGEY1, DXSIZE, DYSIZE + VYSIZE,
-              DOOR_GFX_PAGEX1, DOOR_GFX_PAGEY1);
+    if (door_state & DOOR_OPEN_1)
+      BlitBitmap(bitmap_db_door, bitmap_db_door,
+                DOOR_GFX_PAGEX2, DOOR_GFX_PAGEY1, DXSIZE, DYSIZE,
+                DOOR_GFX_PAGEX1, DOOR_GFX_PAGEY1);
+
+    if (door_state & DOOR_OPEN_2)
+      BlitBitmap(bitmap_db_door, bitmap_db_door,
+                DOOR_GFX_PAGEX2, DOOR_GFX_PAGEY2, VXSIZE, VYSIZE,
+                DOOR_GFX_PAGEX1, DOOR_GFX_PAGEY2);
+
     door_state &= ~DOOR_COPY_BACK;
   }
 
-  new_door_state = MoveDoor(door_state);
-
-  return(new_door_state);
+  return MoveDoor(door_state);
 }
 
 unsigned int CloseDoor(unsigned int door_state)
 {
-  unsigned int new_door_state;
+  unsigned int old_door_state = GetDoorState();
 
-  BlitBitmap(backbuffer, bitmap_db_door,
-            DX, DY, DXSIZE, DYSIZE, DOOR_GFX_PAGEX1, DOOR_GFX_PAGEY1);
-  BlitBitmap(backbuffer, bitmap_db_door,
-            VX, VY, VXSIZE, VYSIZE, DOOR_GFX_PAGEX1, DOOR_GFX_PAGEY2);
+  if (!(door_state & DOOR_NO_COPY_BACK))
+  {
+    if (old_door_state & DOOR_OPEN_1)
+      BlitBitmap(backbuffer, bitmap_db_door,
+                DX, DY, DXSIZE, DYSIZE, DOOR_GFX_PAGEX1, DOOR_GFX_PAGEY1);
+
+    if (old_door_state & DOOR_OPEN_2)
+      BlitBitmap(backbuffer, bitmap_db_door,
+                VX, VY, VXSIZE, VYSIZE, DOOR_GFX_PAGEX1, DOOR_GFX_PAGEY2);
 
-  new_door_state = MoveDoor(door_state);
+    door_state &= ~DOOR_NO_COPY_BACK;
+  }
 
-  return(new_door_state);
+  return MoveDoor(door_state);
 }
 
 unsigned int GetDoorState()
@@ -2439,7 +2511,7 @@ unsigned int MoveDoor(unsigned int door_state)
        {
          BlitBitmap(bitmap_db_door, drawto,
                     DOOR_GFX_PAGEX1, DOOR_GFX_PAGEY1 + i / 2,
-                    DXSIZE,DYSIZE - i / 2, DX, DY);
+                    DXSIZE, DYSIZE - i / 2, DX, DY);
 
          ClearRectangle(drawto, DX, DY + DYSIZE - i / 2, DXSIZE, i / 2);
        }
@@ -2819,6 +2891,636 @@ static void HandleToolButtons(struct GadgetInfo *gi)
   request_gadget_id = gi->custom_id;
 }
 
+int map_element_RND_to_EM(int element_rnd)
+{
+  static unsigned short mapping_RND_to_EM[NUM_FILE_ELEMENTS];
+  static boolean mapping_initialized = FALSE;
+
+  struct
+  {
+    int element_em;
+    int element_rnd;
+  }
+  mapping_RND_to_EM_list[] =
+  {
+    { Xblank,                  EL_EMPTY                        },
+    { Xstone,                  EL_ROCK                         },
+    { Xnut,                    EL_NUT                          },
+    { Xbug_n,                  EL_BUG_UP                       },
+    { Xbug_e,                  EL_BUG_RIGHT                    },
+    { Xbug_s,                  EL_BUG_DOWN                     },
+    { Xbug_w,                  EL_BUG_LEFT                     },
+    { Xtank_n,                 EL_SPACESHIP_UP                 },
+    { Xtank_e,                 EL_SPACESHIP_RIGHT              },
+    { Xtank_s,                 EL_SPACESHIP_DOWN               },
+    { Xtank_w,                 EL_SPACESHIP_LEFT               },
+    { Xandroid,                        EL_EMC_ANDROID                  },
+    { Xandroid_1_n,            EL_EMC_ANDROID_UP               },
+    { Xandroid_1_e,            EL_EMC_ANDROID_RIGHT            },
+    { Xandroid_1_w,            EL_EMC_ANDROID_LEFT             },
+    { Xandroid_1_s,            EL_EMC_ANDROID_DOWN             },
+    { Xspring,                 EL_SPRING                       },
+    { Xeater_n,                        EL_YAMYAM                       },
+    { Xalien,                  EL_ROBOT                        },
+    { Xemerald,                        EL_EMERALD                      },
+    { Xdiamond,                        EL_DIAMOND                      },
+    { Xdrip_fall,              EL_AMOEBA_DROP                  },
+    { Xbomb,                   EL_BOMB                         },
+    { Xballoon,                        EL_BALLOON                      },
+    { Xgrass,                  EL_EMC_GRASS                    },
+    { Xdirt,                   EL_SAND                         },
+    { Xacid_ne,                        EL_ACID_POOL_TOPRIGHT           },
+    { Xacid_se,                        EL_ACID_POOL_BOTTOMRIGHT        },
+    { Xacid_s,                 EL_ACID_POOL_BOTTOM             },
+    { Xacid_sw,                        EL_ACID_POOL_BOTTOMLEFT         },
+    { Xacid_nw,                        EL_ACID_POOL_TOPLEFT            },
+    { Xacid_1,                 EL_ACID                         },
+    { Xball_1,                 EL_EMC_GENERATOR_BALL           },
+    { Xgrow_ns,                        EL_EMC_GROW                     },
+    { Xwonderwall,             EL_MAGIC_WALL                   },
+    { Xameuba_1,               EL_AMOEBA_WET                   },
+    { Xdoor_1,                 EL_EM_GATE_1                    },
+    { Xdoor_2,                 EL_EM_GATE_2                    },
+    { Xdoor_3,                 EL_EM_GATE_3                    },
+    { Xdoor_4,                 EL_EM_GATE_4                    },
+    { Xdoor_5,                 EL_EMC_GATE_5                   },
+    { Xdoor_6,                 EL_EMC_GATE_6                   },
+    { Xdoor_7,                 EL_EMC_GATE_7                   },
+    { Xdoor_8,                 EL_EMC_GATE_8                   },
+    { Xkey_1,                  EL_EM_KEY_1                     },
+    { Xkey_2,                  EL_EM_KEY_2                     },
+    { Xkey_3,                  EL_EM_KEY_3                     },
+    { Xkey_4,                  EL_EM_KEY_4                     },
+    { Xkey_5,                  EL_EMC_KEY_5                    },
+    { Xkey_6,                  EL_EMC_KEY_6                    },
+    { Xkey_7,                  EL_EMC_KEY_7                    },
+    { Xkey_8,                  EL_EMC_KEY_8                    },
+    { Xwind_n,                 EL_BALLOON_SWITCH_UP            },
+    { Xwind_e,                 EL_BALLOON_SWITCH_RIGHT         },
+    { Xwind_s,                 EL_BALLOON_SWITCH_DOWN          },
+    { Xwind_w,                 EL_BALLOON_SWITCH_LEFT          },
+    { Xwind_nesw,              EL_BALLOON_SWITCH_ANY           },
+    { Xwind_stop,              EL_BALLOON_SWITCH_NONE          },
+    { Xexit,                   EL_EXIT_CLOSED                  },
+    { Xexit_1,                 EL_EXIT_OPEN                    },
+    { Xdynamite,               EL_DYNAMITE                     },
+    { Xdynamite_1,             EL_DYNAMITE_ACTIVE              },
+    { Xbumper,                 EL_EMC_BUMPER                   },
+    { Xwheel,                  EL_ROBOT_WHEEL                  },
+    { Xswitch,                 EL_UNKNOWN                      },
+    { Xsand,                   EL_QUICKSAND_EMPTY              },
+    { Xsand_stone,             EL_QUICKSAND_FULL               },
+    { Xplant,                  EL_EMC_PLANT                    },
+    { Xlenses,                 EL_EMC_LENSES                   },
+    { Xmagnify,                        EL_EMC_MAGNIFY                  },
+    { Xdripper,                        EL_UNKNOWN                      },
+    { Xfake_blank,             EL_INVISIBLE_WALL               },
+    { Xfake_grass,             EL_INVISIBLE_SAND               },
+    { Xfake_door_1,            EL_EM_GATE_1_GRAY               },
+    { Xfake_door_2,            EL_EM_GATE_2_GRAY               },
+    { Xfake_door_3,            EL_EM_GATE_3_GRAY               },
+    { Xfake_door_4,            EL_EM_GATE_4_GRAY               },
+    { Xfake_door_5,            EL_EMC_GATE_5_GRAY              },
+    { Xfake_door_6,            EL_EMC_GATE_6_GRAY              },
+    { Xfake_door_7,            EL_EMC_GATE_7_GRAY              },
+    { Xfake_door_8,            EL_EMC_GATE_8_GRAY              },
+    { Xsteel_1,                        EL_STEELWALL                    },
+    { Xsteel_2,                        EL_UNKNOWN                      },
+    { Xsteel_3,                        EL_EMC_STEELWALL_1              },
+    { Xsteel_4,                        EL_UNKNOWN                      },
+    { Xwall_1,                 EL_WALL                         },
+    { Xwall_2,                 EL_UNKNOWN                      },
+    { Xwall_3,                 EL_UNKNOWN                      },
+    { Xwall_4,                 EL_UNKNOWN                      },
+    { Xround_wall_1,           EL_WALL_SLIPPERY                },
+    { Xround_wall_2,           EL_UNKNOWN                      },
+    { Xround_wall_3,           EL_UNKNOWN                      },
+    { Xround_wall_4,           EL_UNKNOWN                      },
+    { Xdecor_1,                        EL_UNKNOWN                      },
+    { Xdecor_2,                        EL_EMC_WALL_6                   },
+    { Xdecor_3,                        EL_EMC_WALL_4                   },
+    { Xdecor_4,                        EL_EMC_WALL_5                   },
+    { Xdecor_5,                        EL_EMC_WALL_7                   },
+    { Xdecor_6,                        EL_EMC_WALL_8                   },
+    { Xdecor_7,                        EL_UNKNOWN                      },
+    { Xdecor_8,                        EL_EMC_WALL_1                   },
+    { Xdecor_9,                        EL_EMC_WALL_2                   },
+    { Xdecor_10,               EL_EMC_WALL_3                   },
+    { Xdecor_11,               EL_UNKNOWN                      },
+    { Xdecor_12,               EL_UNKNOWN                      },
+    { Xalpha_0,                        EL_CHAR('0')                    },
+    { Xalpha_1,                        EL_CHAR('1')                    },
+    { Xalpha_2,                        EL_CHAR('2')                    },
+    { Xalpha_3,                        EL_CHAR('3')                    },
+    { Xalpha_4,                        EL_CHAR('4')                    },
+    { Xalpha_5,                        EL_CHAR('5')                    },
+    { Xalpha_6,                        EL_CHAR('6')                    },
+    { Xalpha_7,                        EL_CHAR('7')                    },
+    { Xalpha_8,                        EL_CHAR('8')                    },
+    { Xalpha_9,                        EL_CHAR('9')                    },
+    { Xalpha_excla,            EL_CHAR('!')                    },
+    { Xalpha_quote,            EL_CHAR('"')                    },
+    { Xalpha_comma,            EL_CHAR(',')                    },
+    { Xalpha_minus,            EL_CHAR('-')                    },
+    { Xalpha_perio,            EL_CHAR('.')                    },
+    { Xalpha_colon,            EL_CHAR(':')                    },
+    { Xalpha_quest,            EL_CHAR('?')                    },
+    { Xalpha_a,                        EL_CHAR('A')                    },
+    { Xalpha_b,                        EL_CHAR('B')                    },
+    { Xalpha_c,                        EL_CHAR('C')                    },
+    { Xalpha_d,                        EL_CHAR('D')                    },
+    { Xalpha_e,                        EL_CHAR('E')                    },
+    { Xalpha_f,                        EL_CHAR('F')                    },
+    { Xalpha_g,                        EL_CHAR('G')                    },
+    { Xalpha_h,                        EL_CHAR('H')                    },
+    { Xalpha_i,                        EL_CHAR('I')                    },
+    { Xalpha_j,                        EL_CHAR('J')                    },
+    { Xalpha_k,                        EL_CHAR('K')                    },
+    { Xalpha_l,                        EL_CHAR('L')                    },
+    { Xalpha_m,                        EL_CHAR('M')                    },
+    { Xalpha_n,                        EL_CHAR('N')                    },
+    { Xalpha_o,                        EL_CHAR('O')                    },
+    { Xalpha_p,                        EL_CHAR('P')                    },
+    { Xalpha_q,                        EL_CHAR('Q')                    },
+    { Xalpha_r,                        EL_CHAR('R')                    },
+    { Xalpha_s,                        EL_CHAR('S')                    },
+    { Xalpha_t,                        EL_CHAR('T')                    },
+    { Xalpha_u,                        EL_CHAR('U')                    },
+    { Xalpha_v,                        EL_CHAR('V')                    },
+    { Xalpha_w,                        EL_CHAR('W')                    },
+    { Xalpha_x,                        EL_CHAR('X')                    },
+    { Xalpha_y,                        EL_CHAR('Y')                    },
+    { Xalpha_z,                        EL_CHAR('Z')                    },
+    { Xalpha_arrow_e,          EL_CHAR('>')                    },
+    { Xalpha_arrow_w,          EL_CHAR('<')                    },
+    { Xalpha_copyr,            EL_CHAR('©')                    },
+
+    { Zplayer,                 EL_PLAYER_1                     },
+    { Zplayer,                 EL_PLAYER_2                     },
+    { Zplayer,                 EL_PLAYER_3                     },
+    { Zplayer,                 EL_PLAYER_4                     },
+
+    { ZBORDER,                 EL_EMC_LEVEL_BORDER             },
+
+    { -1,                      -1                              }
+  };
+
+  if (!mapping_initialized)
+  {
+    int i;
+
+    /* return "Xalpha_quest" for all undefined elements in mapping array */
+    for (i = 0; i < NUM_FILE_ELEMENTS; i++)
+      mapping_RND_to_EM[i] = Xalpha_quest;
+
+    for (i = 0; mapping_RND_to_EM_list[i].element_rnd != -1; i++)
+      mapping_RND_to_EM[mapping_RND_to_EM_list[i].element_rnd] =
+       mapping_RND_to_EM_list[i].element_em;
+
+    mapping_initialized = TRUE;
+  }
+
+  if (element_rnd >= 0 && element_rnd < NUM_FILE_ELEMENTS)
+    return mapping_RND_to_EM[element_rnd];
+
+  Error(ERR_WARN, "invalid RND level element %d", element_rnd);
+
+  return EL_UNKNOWN;
+}
+
+int map_element_EM_to_RND(int element_em)
+{
+  static unsigned short mapping_EM_to_RND[TILE_MAX];
+  static boolean mapping_initialized = FALSE;
+
+  struct
+  {
+    int element_em;
+    int element_rnd;
+  }
+  mapping_EM_to_RND_list[] =
+  {
+    { Xblank,                  EL_EMPTY                        },
+    { Yacid_splash_eB,         EL_EMPTY                        },
+    { Yacid_splash_wB,         EL_EMPTY                        },
+
+#ifdef EM_ENGINE_BAD_ROLL
+    { Xstone_force_e,          EL_ROCK                         },
+    { Xstone_force_w,          EL_ROCK                         },
+    { Xnut_force_e,            EL_NUT                          },
+    { Xnut_force_w,            EL_NUT                          },
+    { Xspring_force_e,         EL_SPRING                       },
+    { Xspring_force_w,         EL_SPRING                       },
+    { Xemerald_force_e,                EL_EMERALD                      },
+    { Xemerald_force_w,                EL_EMERALD                      },
+    { Xdiamond_force_e,                EL_DIAMOND                      },
+    { Xdiamond_force_w,                EL_DIAMOND                      },
+    { Xbomb_force_e,           EL_BOMB                         },
+    { Xbomb_force_w,           EL_BOMB                         },
+#endif
+
+    { Xstone,                  EL_ROCK                         },
+    { Xstone_pause,            EL_ROCK                         },
+    { Xstone_fall,             EL_ROCK                         },
+    { Ystone_s,                        EL_ROCK                         },
+    { Ystone_sB,               EL_ROCK                         },
+    { Ystone_e,                        EL_ROCK                         },
+    { Ystone_eB,               EL_ROCK                         },
+    { Ystone_w,                        EL_ROCK                         },
+    { Ystone_wB,               EL_ROCK                         },
+    { Xnut,                    EL_NUT                          },
+    { Xnut_pause,              EL_NUT                          },
+    { Xnut_fall,               EL_NUT                          },
+    { Ynut_s,                  EL_NUT                          },
+    { Ynut_sB,                 EL_NUT                          },
+    { Ynut_e,                  EL_NUT                          },
+    { Ynut_eB,                 EL_NUT                          },
+    { Ynut_w,                  EL_NUT                          },
+    { Ynut_wB,                 EL_NUT                          },
+    { Xbug_n,                  EL_BUG_UP                       },
+    { Xbug_e,                  EL_BUG_RIGHT                    },
+    { Xbug_s,                  EL_BUG_DOWN                     },
+    { Xbug_w,                  EL_BUG_LEFT                     },
+    { Xbug_gon,                        EL_BUG_UP                       },
+    { Xbug_goe,                        EL_BUG_RIGHT                    },
+    { Xbug_gos,                        EL_BUG_DOWN                     },
+    { Xbug_gow,                        EL_BUG_LEFT                     },
+    { Ybug_n,                  EL_BUG_UP                       },
+    { Ybug_nB,                 EL_BUG_UP                       },
+    { Ybug_e,                  EL_BUG_RIGHT                    },
+    { Ybug_eB,                 EL_BUG_RIGHT                    },
+    { Ybug_s,                  EL_BUG_DOWN                     },
+    { Ybug_sB,                 EL_BUG_DOWN                     },
+    { Ybug_w,                  EL_BUG_LEFT                     },
+    { Ybug_wB,                 EL_BUG_LEFT                     },
+    { Ybug_w_n,                        EL_BUG_UP                       },
+    { Ybug_n_e,                        EL_BUG_RIGHT                    },
+    { Ybug_e_s,                        EL_BUG_DOWN                     },
+    { Ybug_s_w,                        EL_BUG_LEFT                     },
+    { Ybug_e_n,                        EL_BUG_UP                       },
+    { Ybug_s_e,                        EL_BUG_RIGHT                    },
+    { Ybug_w_s,                        EL_BUG_DOWN                     },
+    { Ybug_n_w,                        EL_BUG_LEFT                     },
+    { Ybug_stone,              EL_ROCK                         },
+    { Ybug_spring,             EL_SPRING                       },
+    { Xtank_n,                 EL_SPACESHIP_UP                 },
+    { Xtank_e,                 EL_SPACESHIP_RIGHT              },
+    { Xtank_s,                 EL_SPACESHIP_DOWN               },
+    { Xtank_w,                 EL_SPACESHIP_LEFT               },
+    { Xtank_gon,               EL_SPACESHIP_UP                 },
+    { Xtank_goe,               EL_SPACESHIP_RIGHT              },
+    { Xtank_gos,               EL_SPACESHIP_DOWN               },
+    { Xtank_gow,               EL_SPACESHIP_LEFT               },
+    { Ytank_n,                 EL_SPACESHIP_UP                 },
+    { Ytank_nB,                        EL_SPACESHIP_UP                 },
+    { Ytank_e,                 EL_SPACESHIP_RIGHT              },
+    { Ytank_eB,                        EL_SPACESHIP_RIGHT              },
+    { Ytank_s,                 EL_SPACESHIP_DOWN               },
+    { Ytank_sB,                        EL_SPACESHIP_DOWN               },
+    { Ytank_w,                 EL_SPACESHIP_LEFT               },
+    { Ytank_wB,                        EL_SPACESHIP_LEFT               },
+    { Ytank_w_n,               EL_SPACESHIP_UP                 },
+    { Ytank_n_e,               EL_SPACESHIP_RIGHT              },
+    { Ytank_e_s,               EL_SPACESHIP_DOWN               },
+    { Ytank_s_w,               EL_SPACESHIP_LEFT               },
+    { Ytank_e_n,               EL_SPACESHIP_UP                 },
+    { Ytank_s_e,               EL_SPACESHIP_RIGHT              },
+    { Ytank_w_s,               EL_SPACESHIP_DOWN               },
+    { Ytank_n_w,               EL_SPACESHIP_LEFT               },
+    { Ytank_stone,             EL_ROCK                         },
+    { Ytank_spring,            EL_SPRING                       },
+    { Xandroid,                        EL_EMC_ANDROID                  },
+    { Xandroid_1_n,            EL_EMC_ANDROID_UP               },
+    { Xandroid_2_n,            EL_EMC_ANDROID_UP               },
+    { Xandroid_1_e,            EL_EMC_ANDROID_RIGHT            },
+    { Xandroid_2_e,            EL_EMC_ANDROID_RIGHT            },
+    { Xandroid_1_w,            EL_EMC_ANDROID_LEFT             },
+    { Xandroid_2_w,            EL_EMC_ANDROID_LEFT             },
+    { Xandroid_1_s,            EL_EMC_ANDROID_DOWN             },
+    { Xandroid_2_s,            EL_EMC_ANDROID_DOWN             },
+    { Yandroid_n,              EL_EMC_ANDROID_UP               },
+    { Yandroid_nB,             EL_EMC_ANDROID_UP               },
+    { Yandroid_ne,             EL_EMC_ANDROID_RIGHT_UP         },
+    { Yandroid_neB,            EL_EMC_ANDROID_RIGHT_UP         },
+    { Yandroid_e,              EL_EMC_ANDROID_RIGHT            },
+    { Yandroid_eB,             EL_EMC_ANDROID_RIGHT            },
+    { Yandroid_se,             EL_EMC_ANDROID_RIGHT_DOWN       },
+    { Yandroid_seB,            EL_EMC_ANDROID_RIGHT_DOWN       },
+    { Yandroid_s,              EL_EMC_ANDROID_DOWN             },
+    { Yandroid_sB,             EL_EMC_ANDROID_DOWN             },
+    { Yandroid_sw,             EL_EMC_ANDROID_LEFT_DOWN        },
+    { Yandroid_swB,            EL_EMC_ANDROID_LEFT_DOWN        },
+    { Yandroid_w,              EL_EMC_ANDROID_LEFT             },
+    { Yandroid_wB,             EL_EMC_ANDROID_LEFT             },
+    { Yandroid_nw,             EL_EMC_ANDROID_LEFT_UP          },
+    { Yandroid_nwB,            EL_EMC_ANDROID_LEFT_UP          },
+    { Xspring,                 EL_SPRING                       },
+    { Xspring_pause,           EL_SPRING                       },
+    { Xspring_e,               EL_SPRING                       },
+    { Xspring_w,               EL_SPRING                       },
+    { Xspring_fall,            EL_SPRING                       },
+    { Yspring_s,               EL_SPRING                       },
+    { Yspring_sB,              EL_SPRING                       },
+    { Yspring_e,               EL_SPRING                       },
+    { Yspring_eB,              EL_SPRING                       },
+    { Yspring_w,               EL_SPRING                       },
+    { Yspring_wB,              EL_SPRING                       },
+    { Yspring_kill_e,          EL_SPRING                       },
+    { Yspring_kill_eB,         EL_SPRING                       },
+    { Yspring_kill_w,          EL_SPRING                       },
+    { Yspring_kill_wB,         EL_SPRING                       },
+    { Xeater_n,                        EL_YAMYAM                       },
+    { Xeater_e,                        EL_YAMYAM                       },
+    { Xeater_w,                        EL_YAMYAM                       },
+    { Xeater_s,                        EL_YAMYAM                       },
+    { Yeater_n,                        EL_YAMYAM                       },
+    { Yeater_nB,               EL_YAMYAM                       },
+    { Yeater_e,                        EL_YAMYAM                       },
+    { Yeater_eB,               EL_YAMYAM                       },
+    { Yeater_s,                        EL_YAMYAM                       },
+    { Yeater_sB,               EL_YAMYAM                       },
+    { Yeater_w,                        EL_YAMYAM                       },
+    { Yeater_wB,               EL_YAMYAM                       },
+    { Yeater_stone,            EL_ROCK                         },
+    { Yeater_spring,           EL_SPRING                       },
+    { Xalien,                  EL_ROBOT                        },
+    { Xalien_pause,            EL_ROBOT                        },
+    { Yalien_n,                        EL_ROBOT                        },
+    { Yalien_nB,               EL_ROBOT                        },
+    { Yalien_e,                        EL_ROBOT                        },
+    { Yalien_eB,               EL_ROBOT                        },
+    { Yalien_s,                        EL_ROBOT                        },
+    { Yalien_sB,               EL_ROBOT                        },
+    { Yalien_w,                        EL_ROBOT                        },
+    { Yalien_wB,               EL_ROBOT                        },
+    { Yalien_stone,            EL_ROCK                         },
+    { Yalien_spring,           EL_SPRING                       },
+    { Xemerald,                        EL_EMERALD                      },
+    { Xemerald_pause,          EL_EMERALD                      },
+    { Xemerald_fall,           EL_EMERALD                      },
+    { Xemerald_shine,          EL_EMERALD                      },
+    { Yemerald_s,              EL_EMERALD                      },
+    { Yemerald_sB,             EL_EMERALD                      },
+    { Yemerald_e,              EL_EMERALD                      },
+    { Yemerald_eB,             EL_EMERALD                      },
+    { Yemerald_w,              EL_EMERALD                      },
+    { Yemerald_wB,             EL_EMERALD                      },
+    { Yemerald_eat,            EL_EMERALD                      },
+    { Yemerald_stone,          EL_ROCK                         },
+    { Xdiamond,                        EL_DIAMOND                      },
+    { Xdiamond_pause,          EL_DIAMOND                      },
+    { Xdiamond_fall,           EL_DIAMOND                      },
+    { Xdiamond_shine,          EL_DIAMOND                      },
+    { Ydiamond_s,              EL_DIAMOND                      },
+    { Ydiamond_sB,             EL_DIAMOND                      },
+    { Ydiamond_e,              EL_DIAMOND                      },
+    { Ydiamond_eB,             EL_DIAMOND                      },
+    { Ydiamond_w,              EL_DIAMOND                      },
+    { Ydiamond_wB,             EL_DIAMOND                      },
+    { Ydiamond_eat,            EL_DIAMOND                      },
+    { Ydiamond_stone,          EL_ROCK                         },
+    { Xdrip_fall,              EL_AMOEBA_DROP                  },
+    { Xdrip_stretch,           EL_AMOEBA_DROP                  },
+    { Xdrip_stretchB,          EL_AMOEBA_DROP                  },
+    { Xdrip_eat,               EL_AMOEBA_DROP                  },
+    { Ydrip_s1,                        EL_AMOEBA_DROP                  },
+    { Ydrip_s1B,               EL_AMOEBA_DROP                  },
+    { Ydrip_s2,                        EL_AMOEBA_DROP                  },
+    { Ydrip_s2B,               EL_AMOEBA_DROP                  },
+    { Xbomb,                   EL_BOMB                         },
+    { Xbomb_pause,             EL_BOMB                         },
+    { Xbomb_fall,              EL_BOMB                         },
+    { Ybomb_s,                 EL_BOMB                         },
+    { Ybomb_sB,                        EL_BOMB                         },
+    { Ybomb_e,                 EL_BOMB                         },
+    { Ybomb_eB,                        EL_BOMB                         },
+    { Ybomb_w,                 EL_BOMB                         },
+    { Ybomb_wB,                        EL_BOMB                         },
+    { Ybomb_eat,               EL_BOMB                         },
+    { Xballoon,                        EL_BALLOON                      },
+    { Yballoon_n,              EL_BALLOON                      },
+    { Yballoon_nB,             EL_BALLOON                      },
+    { Yballoon_e,              EL_BALLOON                      },
+    { Yballoon_eB,             EL_BALLOON                      },
+    { Yballoon_s,              EL_BALLOON                      },
+    { Yballoon_sB,             EL_BALLOON                      },
+    { Yballoon_w,              EL_BALLOON                      },
+    { Yballoon_wB,             EL_BALLOON                      },
+    { Xgrass,                  EL_SAND                         },
+    { Ygrass_nB,               EL_SAND                         },
+    { Ygrass_eB,               EL_SAND                         },
+    { Ygrass_sB,               EL_SAND                         },
+    { Ygrass_wB,               EL_SAND                         },
+    { Xdirt,                   EL_SAND                         },
+    { Ydirt_nB,                        EL_SAND                         },
+    { Ydirt_eB,                        EL_SAND                         },
+    { Ydirt_sB,                        EL_SAND                         },
+    { Ydirt_wB,                        EL_SAND                         },
+    { Xacid_ne,                        EL_ACID_POOL_TOPRIGHT           },
+    { Xacid_se,                        EL_ACID_POOL_BOTTOMRIGHT        },
+    { Xacid_s,                 EL_ACID_POOL_BOTTOM             },
+    { Xacid_sw,                        EL_ACID_POOL_BOTTOMLEFT         },
+    { Xacid_nw,                        EL_ACID_POOL_TOPLEFT            },
+    { Xacid_1,                 EL_ACID                         },
+    { Xacid_2,                 EL_ACID                         },
+    { Xacid_3,                 EL_ACID                         },
+    { Xacid_4,                 EL_ACID                         },
+    { Xacid_5,                 EL_ACID                         },
+    { Xacid_6,                 EL_ACID                         },
+    { Xacid_7,                 EL_ACID                         },
+    { Xacid_8,                 EL_ACID                         },
+    { Xball_1,                 EL_EMC_GENERATOR_BALL           },
+    { Xball_1B,                        EL_EMC_GENERATOR_BALL           },
+    { Xball_2,                 EL_EMC_GENERATOR_BALL           },
+    { Xball_2B,                        EL_EMC_GENERATOR_BALL           },
+    { Yball_eat,               EL_EMC_GENERATOR_BALL           },
+    { Xgrow_ns,                        EL_EMC_GROW                     },
+    { Ygrow_ns_eat,            EL_EMC_GROW                     },
+    { Xgrow_ew,                        EL_EMC_GROW                     },
+    { Ygrow_ew_eat,            EL_EMC_GROW                     },
+    { Xwonderwall,             EL_MAGIC_WALL                   },
+    { XwonderwallB,            EL_MAGIC_WALL                   },
+    { Xameuba_1,               EL_AMOEBA_WET                   },
+    { Xameuba_2,               EL_AMOEBA_WET                   },
+    { Xameuba_3,               EL_AMOEBA_WET                   },
+    { Xameuba_4,               EL_AMOEBA_WET                   },
+    { Xameuba_5,               EL_AMOEBA_WET                   },
+    { Xameuba_6,               EL_AMOEBA_WET                   },
+    { Xameuba_7,               EL_AMOEBA_WET                   },
+    { Xameuba_8,               EL_AMOEBA_WET                   },
+    { Xdoor_1,                 EL_EM_GATE_1                    },
+    { Xdoor_2,                 EL_EM_GATE_2                    },
+    { Xdoor_3,                 EL_EM_GATE_3                    },
+    { Xdoor_4,                 EL_EM_GATE_4                    },
+    { Xdoor_5,                 EL_EMC_GATE_5                   },
+    { Xdoor_6,                 EL_EMC_GATE_6                   },
+    { Xdoor_7,                 EL_EMC_GATE_7                   },
+    { Xdoor_8,                 EL_EMC_GATE_8                   },
+    { Xkey_1,                  EL_EM_KEY_1                     },
+    { Xkey_2,                  EL_EM_KEY_2                     },
+    { Xkey_3,                  EL_EM_KEY_3                     },
+    { Xkey_4,                  EL_EM_KEY_4                     },
+    { Xkey_5,                  EL_EMC_KEY_5                    },
+    { Xkey_6,                  EL_EMC_KEY_6                    },
+    { Xkey_7,                  EL_EMC_KEY_7                    },
+    { Xkey_8,                  EL_EMC_KEY_8                    },
+    { Xwind_n,                 EL_BALLOON_SWITCH_UP            },
+    { Xwind_e,                 EL_BALLOON_SWITCH_RIGHT         },
+    { Xwind_s,                 EL_BALLOON_SWITCH_DOWN          },
+    { Xwind_w,                 EL_BALLOON_SWITCH_LEFT          },
+    { Xwind_nesw,              EL_BALLOON_SWITCH_ANY           },
+    { Xwind_stop,              EL_BALLOON_SWITCH_NONE          },
+    { Xexit,                   EL_EXIT_CLOSED                  },
+    { Xexit_1,                 EL_EXIT_OPEN                    },
+    { Xexit_2,                 EL_EXIT_OPEN                    },
+    { Xexit_3,                 EL_EXIT_OPEN                    },
+    { Xdynamite,               EL_DYNAMITE                     },
+    { Ydynamite_eat,           EL_DYNAMITE                     },
+    { Xdynamite_1,             EL_DYNAMITE_ACTIVE              },
+    { Xdynamite_2,             EL_DYNAMITE_ACTIVE              },
+    { Xdynamite_3,             EL_DYNAMITE_ACTIVE              },
+    { Xdynamite_4,             EL_DYNAMITE_ACTIVE              },
+    { Xbumper,                 EL_EMC_BUMPER                   },
+    { XbumperB,                        EL_EMC_BUMPER                   },
+    { Xwheel,                  EL_ROBOT_WHEEL                  },
+    { XwheelB,                 EL_ROBOT_WHEEL                  },
+    { Xswitch,                 EL_UNKNOWN                      },
+    { XswitchB,                        EL_UNKNOWN                      },
+    { Xsand,                   EL_QUICKSAND_EMPTY              },
+    { Xsand_stone,             EL_QUICKSAND_FULL               },
+    { Xsand_stonein_1,         EL_QUICKSAND_FULL               },
+    { Xsand_stonein_2,         EL_QUICKSAND_FULL               },
+    { Xsand_stonein_3,         EL_QUICKSAND_FULL               },
+    { Xsand_stonein_4,         EL_QUICKSAND_FULL               },
+    { Xsand_stonesand_1,       EL_QUICKSAND_FULL               },
+    { Xsand_stonesand_2,       EL_QUICKSAND_FULL               },
+    { Xsand_stonesand_3,       EL_QUICKSAND_FULL               },
+    { Xsand_stonesand_4,       EL_QUICKSAND_FULL               },
+    { Xsand_stoneout_1,                EL_QUICKSAND_FULL               },
+    { Xsand_stoneout_2,                EL_QUICKSAND_FULL               },
+    { Xsand_sandstone_1,       EL_QUICKSAND_FULL               },
+    { Xsand_sandstone_2,       EL_QUICKSAND_FULL               },
+    { Xsand_sandstone_3,       EL_QUICKSAND_FULL               },
+    { Xsand_sandstone_4,       EL_QUICKSAND_FULL               },
+    { Xplant,                  EL_EMC_PLANT                    },
+    { Yplant,                  EL_EMC_PLANT                    },
+    { Xlenses,                 EL_EMC_LENSES                   },
+    { Xmagnify,                        EL_EMC_MAGNIFY                  },
+    { Xdripper,                        EL_UNKNOWN                      },
+    { XdripperB,               EL_UNKNOWN                      },
+    { Xfake_blank,             EL_INVISIBLE_WALL               },
+    { Xfake_blankB,            EL_INVISIBLE_WALL               },
+    { Xfake_grass,             EL_INVISIBLE_SAND               },
+    { Xfake_grassB,            EL_INVISIBLE_SAND               },
+    { Xfake_door_1,            EL_EM_GATE_1_GRAY               },
+    { Xfake_door_2,            EL_EM_GATE_2_GRAY               },
+    { Xfake_door_3,            EL_EM_GATE_3_GRAY               },
+    { Xfake_door_4,            EL_EM_GATE_4_GRAY               },
+    { Xfake_door_5,            EL_EMC_GATE_5_GRAY              },
+    { Xfake_door_6,            EL_EMC_GATE_6_GRAY              },
+    { Xfake_door_7,            EL_EMC_GATE_7_GRAY              },
+    { Xfake_door_8,            EL_EMC_GATE_8_GRAY              },
+    { Xsteel_1,                        EL_STEELWALL                    },
+    { Xsteel_2,                        EL_UNKNOWN                      },
+    { Xsteel_3,                        EL_EMC_STEELWALL_1              },
+    { Xsteel_4,                        EL_UNKNOWN                      },
+    { Xwall_1,                 EL_WALL                         },
+    { Xwall_2,                 EL_UNKNOWN                      },
+    { Xwall_3,                 EL_UNKNOWN                      },
+    { Xwall_4,                 EL_UNKNOWN                      },
+    { Xround_wall_1,           EL_WALL_SLIPPERY                },
+    { Xround_wall_2,           EL_UNKNOWN                      },
+    { Xround_wall_3,           EL_UNKNOWN                      },
+    { Xround_wall_4,           EL_UNKNOWN                      },
+    { Xdecor_1,                        EL_UNKNOWN                      },
+    { Xdecor_2,                        EL_EMC_WALL_6                   },
+    { Xdecor_3,                        EL_EMC_WALL_4                   },
+    { Xdecor_4,                        EL_EMC_WALL_5                   },
+    { Xdecor_5,                        EL_EMC_WALL_7                   },
+    { Xdecor_6,                        EL_EMC_WALL_8                   },
+    { Xdecor_7,                        EL_UNKNOWN                      },
+    { Xdecor_8,                        EL_EMC_WALL_1                   },
+    { Xdecor_9,                        EL_EMC_WALL_2                   },
+    { Xdecor_10,               EL_EMC_WALL_3                   },
+    { Xdecor_11,               EL_UNKNOWN                      },
+    { Xdecor_12,               EL_UNKNOWN                      },
+    { Xalpha_0,                        EL_CHAR('0')                    },
+    { Xalpha_1,                        EL_CHAR('1')                    },
+    { Xalpha_2,                        EL_CHAR('2')                    },
+    { Xalpha_3,                        EL_CHAR('3')                    },
+    { Xalpha_4,                        EL_CHAR('4')                    },
+    { Xalpha_5,                        EL_CHAR('5')                    },
+    { Xalpha_6,                        EL_CHAR('6')                    },
+    { Xalpha_7,                        EL_CHAR('7')                    },
+    { Xalpha_8,                        EL_CHAR('8')                    },
+    { Xalpha_9,                        EL_CHAR('9')                    },
+    { Xalpha_excla,            EL_CHAR('!')                    },
+    { Xalpha_quote,            EL_CHAR('"')                    },
+    { Xalpha_comma,            EL_CHAR(',')                    },
+    { Xalpha_minus,            EL_CHAR('-')                    },
+    { Xalpha_perio,            EL_CHAR('.')                    },
+    { Xalpha_colon,            EL_CHAR(':')                    },
+    { Xalpha_quest,            EL_CHAR('?')                    },
+    { Xalpha_a,                        EL_CHAR('A')                    },
+    { Xalpha_b,                        EL_CHAR('B')                    },
+    { Xalpha_c,                        EL_CHAR('C')                    },
+    { Xalpha_d,                        EL_CHAR('D')                    },
+    { Xalpha_e,                        EL_CHAR('E')                    },
+    { Xalpha_f,                        EL_CHAR('F')                    },
+    { Xalpha_g,                        EL_CHAR('G')                    },
+    { Xalpha_h,                        EL_CHAR('H')                    },
+    { Xalpha_i,                        EL_CHAR('I')                    },
+    { Xalpha_j,                        EL_CHAR('J')                    },
+    { Xalpha_k,                        EL_CHAR('K')                    },
+    { Xalpha_l,                        EL_CHAR('L')                    },
+    { Xalpha_m,                        EL_CHAR('M')                    },
+    { Xalpha_n,                        EL_CHAR('N')                    },
+    { Xalpha_o,                        EL_CHAR('O')                    },
+    { Xalpha_p,                        EL_CHAR('P')                    },
+    { Xalpha_q,                        EL_CHAR('Q')                    },
+    { Xalpha_r,                        EL_CHAR('R')                    },
+    { Xalpha_s,                        EL_CHAR('S')                    },
+    { Xalpha_t,                        EL_CHAR('T')                    },
+    { Xalpha_u,                        EL_CHAR('U')                    },
+    { Xalpha_v,                        EL_CHAR('V')                    },
+    { Xalpha_w,                        EL_CHAR('W')                    },
+    { Xalpha_x,                        EL_CHAR('X')                    },
+    { Xalpha_y,                        EL_CHAR('Y')                    },
+    { Xalpha_z,                        EL_CHAR('Z')                    },
+    { Xalpha_arrow_e,          EL_CHAR('>')                    },
+    { Xalpha_arrow_w,          EL_CHAR('<')                    },
+    { Xalpha_copyr,            EL_CHAR('©')                    },
+
+    { Zplayer,                 EL_PLAYER_1                     },
+
+    { ZBORDER,                 EL_EMC_LEVEL_BORDER             },
+
+    { -1,                      -1                              }
+  };
+
+  if (!mapping_initialized)
+  {
+    int i;
+
+    /* return "EL_UNKNOWN" for all undefined elements in mapping array */
+    for (i = 0; i < TILE_MAX; i++)
+      mapping_EM_to_RND[i] = EL_UNKNOWN;
+
+    for (i = 0; mapping_EM_to_RND_list[i].element_em != -1; i++)
+      mapping_EM_to_RND[mapping_EM_to_RND_list[i].element_em] =
+       mapping_EM_to_RND_list[i].element_rnd;
+
+    mapping_initialized = TRUE;
+  }
+
+  if (element_em >= 0 && element_em < TILE_MAX)
+    return mapping_EM_to_RND[element_em];
+
+  Error(ERR_WARN, "invalid EM level element %d", element_em);
+
+  return EL_UNKNOWN;
+}
+
 int get_next_element(int element)
 {
   switch(element)
@@ -2838,7 +3540,7 @@ int get_next_element(int element)
 int el_act_dir2img(int element, int action, int direction)
 {
   element = GFX_ELEMENT(element);
-  direction = MV_DIR_BIT(direction);
+  direction = MV_DIR_BIT(direction);   /* default: MV_NO_MOVING => MV_DOWN */
 
   return element_info[element].direction_graphic[action][direction];
 }
@@ -2846,7 +3548,7 @@ int el_act_dir2img(int element, int action, int direction)
 static int el_act_dir2crm(int element, int action, int direction)
 {
   element = GFX_ELEMENT(element);
-  direction = MV_DIR_BIT(direction);
+  direction = MV_DIR_BIT(direction);   /* default: MV_NO_MOVING => MV_DOWN */
 
   return element_info[element].direction_crumbled[action][direction];
 }
@@ -2872,6 +3574,11 @@ int el_dir2img(int element, int direction)
   return el_act_dir2img(element, ACTION_DEFAULT, direction);
 }
 
+int el2baseimg(int element)
+{
+  return element_info[element].graphic[ACTION_DEFAULT];
+}
+
 int el2img(int element)
 {
   element = GFX_ELEMENT(element);
@@ -2892,3 +3599,9 @@ int el2preimg(int element)
 
   return element_info[element].special_graphic[GFX_SPECIAL_ARG_PREVIEW];
 }
+
+int getGameFrameDelay_EM(int native_em_game_frame_delay)
+{
+  return (GameFrameDelay == GAME_FRAME_DELAY ? native_em_game_frame_delay :
+         GameFrameDelay);
+}