rnd-20030614-3-src
[rocksndiamonds.git] / src / init.c
index d6ede854a841fa36bfa305e99086e7b98e0ab5e7..77cf39a00fdba9c92f5f0203782b86aaf47ba1ee 100644 (file)
@@ -428,6 +428,19 @@ void InitElementGraphicInfo()
     if (graphic_info[graphic].bitmap == NULL)
       continue;
 
+    if ((action > -1 || direction > -1) && el2img(element) != -1)
+    {
+      boolean base_redefined = getImageListEntry(el2img(element))->redefined;
+      boolean act_dir_redefined = getImageListEntry(graphic)->redefined;
+
+      /* if the base graphic ("emerald", for example) has been redefined,
+        but not the action graphic ("emerald.falling", for example), do not
+        use an existing (in this case considered obsolete) action graphic
+        anymore, but use the automatically determined default graphic */
+      if (base_redefined && !act_dir_redefined)
+       continue;
+    }
+
     if (action < 0)
       action = ACTION_DEFAULT;
 
@@ -455,6 +468,10 @@ void InitElementGraphicInfo()
     if (action < 0)
       action = ACTION_DEFAULT;
 
+    if (direction < 0)
+      for (dir=0; dir<NUM_DIRECTIONS; dir++)
+       element_info[element].direction_graphic[action][dir] = -1;
+
     if (direction > -1)
       element_info[element].direction_graphic[action][direction] = graphic;
     else
@@ -541,6 +558,10 @@ void InitElementSpecialGraphicInfo()
     boolean base_redefined = getImageListEntry(el2img(element))->redefined;
     boolean special_redefined = getImageListEntry(graphic)->redefined;
 
+    /* if the base graphic ("emerald", for example) has been redefined,
+       but not the special graphic ("emerald.EDITOR", for example), do not
+       use an existing (in this case considered obsolete) special graphic
+       anymore, but use the automatically created (down-scaled) graphic */
     if (base_redefined && !special_redefined)
       continue;
 
@@ -1080,7 +1101,7 @@ void InitElementPropertiesStatic()
     EL_INVISIBLE_SAND,
     EL_INVISIBLE_SAND_ACTIVE,
 
-    /* !!! currently not diggable, but handled by 'ep_dont_go_to' !!! */
+    /* !!! currently not diggable, but handled by 'ep_dont_run_into' !!! */
 #if 0
     EL_LANDMINE,
     EL_TRAP_ACTIVE,
@@ -1122,6 +1143,62 @@ void InitElementPropertiesStatic()
     -1
   };
 
+  static int ep_dont_run_into[] =
+  {
+    /* same elements as in 'ep_dont_touch' */
+    EL_BUG,
+    EL_SPACESHIP,
+    EL_BD_BUTTERFLY,
+    EL_BD_FIREFLY,
+
+    /* same elements as in 'ep_dont_collide_with' */
+    EL_YAMYAM,
+    EL_DARK_YAMYAM,
+    EL_ROBOT,
+    EL_PACMAN,
+    EL_SP_SNIKSNAK,
+    EL_SP_ELECTRON,
+
+    /* new elements */
+    EL_AMOEBA_DROP,
+    EL_ACID,
+
+    /* !!! maybe this should better be handled by 'ep_diggable' !!! */
+#if 1
+    EL_SP_BUGGY_BASE_ACTIVE,
+    EL_TRAP_ACTIVE,
+    EL_LANDMINE,
+#endif
+    -1
+  };
+
+  static int ep_dont_collide_with[] =
+  {
+    /* same elements as in 'ep_dont_touch' */
+    EL_BUG,
+    EL_SPACESHIP,
+    EL_BD_BUTTERFLY,
+    EL_BD_FIREFLY,
+
+    /* new elements */
+    EL_YAMYAM,
+    EL_DARK_YAMYAM,
+    EL_ROBOT,
+    EL_PACMAN,
+    EL_SP_SNIKSNAK,
+    EL_SP_ELECTRON,
+    -1
+  };
+
+  static int ep_dont_touch[] =
+  {
+    EL_BUG,
+    EL_SPACESHIP,
+    EL_BD_BUTTERFLY,
+    EL_BD_FIREFLY,
+    -1
+  };
+
   static int ep_indestructible[] =
   {
     EL_STEELWALL,
@@ -1196,10 +1273,18 @@ void InitElementPropertiesStatic()
     EL_SWITCHGATE_OPENING,
     EL_SWITCHGATE_CLOSED,
     EL_SWITCHGATE_CLOSING,
+#if 0
+    EL_SWITCHGATE_SWITCH_UP,
+    EL_SWITCHGATE_SWITCH_DOWN,
+#endif
     EL_TIMEGATE_OPEN,
     EL_TIMEGATE_OPENING,
     EL_TIMEGATE_CLOSED,
     EL_TIMEGATE_CLOSING,
+#if 0
+    EL_TIMEGATE_SWITCH,
+    EL_TIMEGATE_SWITCH_ACTIVE,
+#endif
     EL_TUBE_ANY,
     EL_TUBE_VERTICAL,
     EL_TUBE_HORIZONTAL,
@@ -1251,6 +1336,33 @@ void InitElementPropertiesStatic()
     -1
   };
 
+  static int ep_can_change[] =
+  {
+    -1
+  };
+
+  static int ep_can_move[] =
+  {
+    EL_BUG,
+    EL_SPACESHIP,
+    EL_BD_BUTTERFLY,
+    EL_BD_FIREFLY,
+    EL_YAMYAM,
+    EL_DARK_YAMYAM,
+    EL_ROBOT,
+    EL_PACMAN,
+    EL_MOLE,
+    EL_PENGUIN,
+    EL_PIG,
+    EL_DRAGON,
+    EL_SATELLITE,
+    EL_SP_SNIKSNAK,
+    EL_SP_ELECTRON,
+    EL_BALLOON,
+    EL_SPRING,
+    -1
+  };
+
   static int ep_can_fall[] =
   {
     EL_ROCK,
@@ -1279,7 +1391,7 @@ void InitElementPropertiesStatic()
     -1
   };
 
-  static int ep_can_smash[] =
+  static int ep_can_smash_player[] =
   {
     EL_ROCK,
     EL_BD_ROCK,
@@ -1304,6 +1416,78 @@ void InitElementPropertiesStatic()
     -1
   };
 
+  static int ep_can_smash_enemies[] =
+  {
+    EL_ROCK,
+    EL_BD_ROCK,
+    EL_SP_ZONK,
+    -1
+  };
+
+  static int ep_can_smash_everything[] =
+  {
+    EL_ROCK,
+    EL_BD_ROCK,
+    EL_SP_ZONK,
+    -1
+  };
+
+  static int ep_can_explode_by_fire[] =
+  {
+    /* same elements as in 'ep_can_explode_impact' */
+    EL_BOMB,
+    EL_SP_DISK_ORANGE,
+    EL_DX_SUPABOMB,
+
+    /* same elements as in 'ep_can_explode_smashed' */
+    EL_SATELLITE,
+    EL_PIG,
+    EL_DRAGON,
+    EL_MOLE,
+
+    /* new elements */
+    EL_DYNAMITE_ACTIVE,
+    EL_DYNAMITE,
+    EL_DYNABOMB_PLAYER_1_ACTIVE,
+    EL_DYNABOMB_PLAYER_2_ACTIVE,
+    EL_DYNABOMB_PLAYER_3_ACTIVE,
+    EL_DYNABOMB_PLAYER_4_ACTIVE,
+    EL_DYNABOMB_INCREASE_NUMBER,
+    EL_DYNABOMB_INCREASE_SIZE,
+    EL_DYNABOMB_INCREASE_POWER,
+    EL_SP_DISK_RED_ACTIVE,
+    EL_BUG,
+    EL_PENGUIN,
+    EL_SP_DISK_RED,
+    EL_SP_DISK_YELLOW,
+    EL_SP_SNIKSNAK,
+    EL_SP_ELECTRON,
+    -1
+  };
+
+  static int ep_can_explode_smashed[] =
+  {
+    /* same elements as in 'ep_can_explode_impact' */
+    EL_BOMB,
+    EL_SP_DISK_ORANGE,
+    EL_DX_SUPABOMB,
+
+    /* new elements */
+    EL_SATELLITE,
+    EL_PIG,
+    EL_DRAGON,
+    EL_MOLE,
+    -1
+  };
+
+  static int ep_can_explode_impact[] =
+  {
+    EL_BOMB,
+    EL_SP_DISK_ORANGE,
+    EL_DX_SUPABOMB,
+    -1
+  };
+
   static int ep_walkable_over[] =
   {
     EL_EMPTY_SPACE,
@@ -1382,28 +1566,19 @@ void InitElementPropertiesStatic()
   static int ep_pushable[] =
   {
     EL_ROCK,
-    EL_BD_ROCK,
     EL_BOMB,
+    EL_DX_SUPABOMB,
     EL_NUT,
     EL_TIME_ORB_EMPTY,
-    EL_SOKOBAN_FIELD_FULL,
-    EL_SOKOBAN_OBJECT,
-    EL_SATELLITE,
     EL_SP_ZONK,
     EL_SP_DISK_ORANGE,
+    EL_SPRING,
+    EL_BD_ROCK,
+    EL_SOKOBAN_OBJECT,
+    EL_SOKOBAN_FIELD_FULL,
+    EL_SATELLITE,
     EL_SP_DISK_YELLOW,
     EL_BALLOON,
-    EL_SPRING,
-    EL_DX_SUPABOMB,
-    -1
-  };
-
-  static int ep_player[] =
-  {
-    EL_PLAYER_1,
-    EL_PLAYER_2,
-    EL_PLAYER_3,
-    EL_PLAYER_4,
     -1
   };
 
@@ -1416,48 +1591,12 @@ void InitElementPropertiesStatic()
     -1
   };
 
-  static int ep_can_move[] =
+  static int ep_player[] =
   {
-    /* only stored in level file */
-    EL_BUG_RIGHT,
-    EL_BUG_UP,
-    EL_BUG_LEFT,
-    EL_BUG_DOWN,
-    EL_SPACESHIP_RIGHT,
-    EL_SPACESHIP_UP,
-    EL_SPACESHIP_LEFT,
-    EL_SPACESHIP_DOWN,
-    EL_BD_BUTTERFLY_RIGHT,
-    EL_BD_BUTTERFLY_UP,
-    EL_BD_BUTTERFLY_LEFT,
-    EL_BD_BUTTERFLY_DOWN,
-    EL_BD_FIREFLY_RIGHT,
-    EL_BD_FIREFLY_UP,
-    EL_BD_FIREFLY_LEFT,
-    EL_BD_FIREFLY_DOWN,
-    EL_PACMAN_RIGHT,
-    EL_PACMAN_UP,
-    EL_PACMAN_LEFT,
-    EL_PACMAN_DOWN,
-
-    /* level file and runtime elements */
-    EL_BUG,
-    EL_SPACESHIP,
-    EL_BD_BUTTERFLY,
-    EL_BD_FIREFLY,
-    EL_YAMYAM,
-    EL_DARK_YAMYAM,
-    EL_ROBOT,
-    EL_PACMAN,
-    EL_MOLE,
-    EL_PENGUIN,
-    EL_PIG,
-    EL_DRAGON,
-    EL_SATELLITE,
-    EL_SP_SNIKSNAK,
-    EL_SP_ELECTRON,
-    EL_BALLOON,
-    EL_SPRING,
+    EL_PLAYER_1,
+    EL_PLAYER_2,
+    EL_PLAYER_3,
+    EL_PLAYER_4,
     -1
   };
 
@@ -1474,79 +1613,34 @@ void InitElementPropertiesStatic()
     -1
   };
 
-  static int ep_dont_touch[] =
-  {
-    EL_BUG,
-    EL_SPACESHIP,
-    EL_BD_BUTTERFLY,
-    EL_BD_FIREFLY,
-    -1
-  };
-
-  static int ep_enemy[] =
-  {
-    EL_BUG,
-    EL_SPACESHIP,
-    EL_BD_BUTTERFLY,
-    EL_BD_FIREFLY,
-    EL_YAMYAM,
-    EL_DARK_YAMYAM,
-    EL_ROBOT,
-    EL_PACMAN,
-    EL_SP_SNIKSNAK,
-    EL_SP_ELECTRON,
-    -1
-  };
-
-  static int ep_dont_go_to[] =
-  {
-    EL_BUG,
-    EL_SPACESHIP,
-    EL_BD_BUTTERFLY,
-    EL_BD_FIREFLY,
-    EL_YAMYAM,
-    EL_DARK_YAMYAM,
-    EL_ROBOT,
-    EL_PACMAN,
-    EL_AMOEBA_DROP,
-    EL_ACID,
-    EL_SP_SNIKSNAK,
-    EL_SP_ELECTRON,
-
-    /* !!! maybe this should better be handled by 'ep_diggable' !!! */
-#if 1
-    EL_SP_BUGGY_BASE_ACTIVE,
-    EL_TRAP_ACTIVE,
-    EL_LANDMINE,
-#endif
-    -1
-  };
-
-  static int ep_can_explode[] =
+  static int ep_switchable[] =
   {
-    EL_BOMB,
-    EL_DYNAMITE_ACTIVE,
-    EL_DYNAMITE,
-    EL_DYNABOMB_PLAYER_1_ACTIVE,
-    EL_DYNABOMB_PLAYER_2_ACTIVE,
-    EL_DYNABOMB_PLAYER_3_ACTIVE,
-    EL_DYNABOMB_PLAYER_4_ACTIVE,
-    EL_DYNABOMB_INCREASE_NUMBER,
-    EL_DYNABOMB_INCREASE_SIZE,
-    EL_DYNABOMB_INCREASE_POWER,
-    EL_SP_DISK_RED_ACTIVE,
-    EL_BUG,
-    EL_MOLE,
-    EL_PENGUIN,
-    EL_PIG,
-    EL_DRAGON,
-    EL_SATELLITE,
-    EL_SP_DISK_RED,
-    EL_SP_DISK_ORANGE,
-    EL_SP_DISK_YELLOW,
-    EL_SP_SNIKSNAK,
-    EL_SP_ELECTRON,
-    EL_DX_SUPABOMB,
+    EL_ROBOT_WHEEL,
+    EL_SP_TERMINAL,
+    EL_CONVEYOR_BELT_1_SWITCH_LEFT,
+    EL_CONVEYOR_BELT_1_SWITCH_MIDDLE,
+    EL_CONVEYOR_BELT_1_SWITCH_RIGHT,
+    EL_CONVEYOR_BELT_2_SWITCH_LEFT,
+    EL_CONVEYOR_BELT_2_SWITCH_MIDDLE,
+    EL_CONVEYOR_BELT_2_SWITCH_RIGHT,
+    EL_CONVEYOR_BELT_3_SWITCH_LEFT,
+    EL_CONVEYOR_BELT_3_SWITCH_MIDDLE,
+    EL_CONVEYOR_BELT_3_SWITCH_RIGHT,
+    EL_CONVEYOR_BELT_4_SWITCH_LEFT,
+    EL_CONVEYOR_BELT_4_SWITCH_MIDDLE,
+    EL_CONVEYOR_BELT_4_SWITCH_RIGHT,
+    EL_SWITCHGATE_SWITCH_UP,
+    EL_SWITCHGATE_SWITCH_DOWN,
+    EL_LIGHT_SWITCH,
+    EL_LIGHT_SWITCH_ACTIVE,
+    EL_TIMEGATE_SWITCH,
+    EL_BALLOON_SWITCH_LEFT,
+    EL_BALLOON_SWITCH_RIGHT,
+    EL_BALLOON_SWITCH_UP,
+    EL_BALLOON_SWITCH_DOWN,
+    EL_BALLOON_SWITCH_ANY,
+    EL_LAMP,
+    EL_TIME_ORB_FULL,
     -1
   };
 
@@ -1928,6 +2022,22 @@ void InitElementPropertiesStatic()
     -1
   };
 
+  static int ep_classic_enemy[] =
+  {
+    EL_BUG,
+    EL_SPACESHIP,
+    EL_BD_BUTTERFLY,
+    EL_BD_FIREFLY,
+
+    EL_YAMYAM,
+    EL_DARK_YAMYAM,
+    EL_ROBOT,
+    EL_PACMAN,
+    EL_SP_SNIKSNAK,
+    EL_SP_ELECTRON,
+    -1
+  };
+
   static int ep_belt[] =
   {
     EL_CONVEYOR_BELT_1_LEFT,
@@ -2200,10 +2310,20 @@ void InitElementPropertiesStatic()
   {
     { ep_diggable,             EP_DIGGABLE             },
     { ep_collectible,          EP_COLLECTIBLE          },
+    { ep_dont_run_into,                EP_DONT_RUN_INTO        },
+    { ep_dont_collide_with,    EP_DONT_COLLIDE_WITH    },
+    { ep_dont_touch,           EP_DONT_TOUCH           },
     { ep_indestructible,       EP_INDESTRUCTIBLE       },
     { ep_slippery,             EP_SLIPPERY             },
+    { ep_can_change,           EP_CAN_CHANGE           },
+    { ep_can_move,             EP_CAN_MOVE             },
     { ep_can_fall,             EP_CAN_FALL             },
-    { ep_can_smash,            EP_CAN_SMASH            },
+    { ep_can_smash_player,     EP_CAN_SMASH_PLAYER     },
+    { ep_can_smash_enemies,    EP_CAN_SMASH_ENEMIES    },
+    { ep_can_smash_everything, EP_CAN_SMASH_EVERYTHING },
+    { ep_can_explode_by_fire,  EP_CAN_EXPLODE_BY_FIRE  },
+    { ep_can_explode_smashed,  EP_CAN_EXPLODE_SMASHED  },
+    { ep_can_explode_impact,   EP_CAN_EXPLODE_IMPACT   },
     { ep_walkable_over,                EP_WALKABLE_OVER        },
     { ep_walkable_inside,      EP_WALKABLE_INSIDE      },
     { ep_walkable_under,       EP_WALKABLE_UNDER       },
@@ -2212,14 +2332,11 @@ void InitElementPropertiesStatic()
     { ep_passable_under,       EP_PASSABLE_UNDER       },
     { ep_pushable,             EP_PUSHABLE             },
 
-    { ep_player,               EP_PLAYER               },
     { ep_can_be_crumbled,      EP_CAN_BE_CRUMBLED      },
-    { ep_can_move,             EP_CAN_MOVE             },
+
+    { ep_player,               EP_PLAYER               },
     { ep_can_pass_magic_wall,  EP_CAN_PASS_MAGIC_WALL  },
-    { ep_dont_touch,           EP_DONT_TOUCH           },
-    { ep_enemy,                        EP_ENEMY                },
-    { ep_dont_go_to,           EP_DONT_GO_TO           },
-    { ep_can_explode,          EP_CAN_EXPLODE          },
+    { ep_switchable,           EP_SWITCHABLE           },
     { ep_bd_element,           EP_BD_ELEMENT           },
     { ep_sp_element,           EP_SP_ELEMENT           },
     { ep_sb_element,           EP_SB_ELEMENT           },
@@ -2229,6 +2346,7 @@ void InitElementPropertiesStatic()
     { ep_food_pig,             EP_FOOD_PIG             },
     { ep_historic_wall,                EP_HISTORIC_WALL        },
     { ep_historic_solid,       EP_HISTORIC_SOLID       },
+    { ep_classic_enemy,                EP_CLASSIC_ENEMY        },
     { ep_belt,                 EP_BELT                 },
     { ep_belt_active,          EP_BELT_ACTIVE          },
     { ep_belt_switch,          EP_BELT_SWITCH          },
@@ -2243,7 +2361,40 @@ void InitElementPropertiesStatic()
     { NULL,                    -1                      }
   };
 
-  int i, j;
+  static int copy_properties[][5] =
+  {
+    {
+      EL_BUG,
+      EL_BUG_LEFT,             EL_BUG_RIGHT,
+      EL_BUG_UP,               EL_BUG_DOWN
+    },
+    {
+      EL_SPACESHIP,
+      EL_SPACESHIP_LEFT,       EL_SPACESHIP_RIGHT,
+      EL_SPACESHIP_UP,         EL_SPACESHIP_DOWN
+    },
+    {
+      EL_BD_BUTTERFLY,
+      EL_BD_BUTTERFLY_LEFT,    EL_BD_BUTTERFLY_RIGHT,
+      EL_BD_BUTTERFLY_UP,      EL_BD_BUTTERFLY_DOWN
+    },
+    {
+      EL_BD_FIREFLY,
+      EL_BD_FIREFLY_LEFT,      EL_BD_FIREFLY_RIGHT,
+      EL_BD_FIREFLY_UP,                EL_BD_FIREFLY_DOWN
+    },
+    {
+      EL_PACMAN,
+      EL_PACMAN_LEFT,          EL_PACMAN_RIGHT,
+      EL_PACMAN_UP,            EL_PACMAN_DOWN
+    },
+    {
+      -1,
+      -1, -1, -1, -1
+    }
+  };
+
+  int i, j, k;
 
   /* always start with reliable default values (element has no properties) */
   for (i=0; i < MAX_NUM_ELEMENTS; i++)
@@ -2255,6 +2406,13 @@ void InitElementPropertiesStatic()
     for (j=0; (element_properties[i].elements)[j] != -1; j++)
       SET_PROPERTY((element_properties[i].elements)[j],
                   element_properties[i].property, TRUE);
+
+  /* copy properties to some elements that are only stored in level file */
+  for (i=0; i < NUM_ELEMENT_PROPERTIES; i++)
+    for (j=0; copy_properties[j][0] != -1; j++)
+      if (HAS_PROPERTY(copy_properties[j][0], i))
+       for (k=1; k<=4; k++)
+         SET_PROPERTY(copy_properties[j][k], i, TRUE);
 }
 
 void InitElementPropertiesEngine(int engine_version)
@@ -2265,16 +2423,16 @@ void InitElementPropertiesEngine(int engine_version)
     EP_AMOEBALIVE,
     EP_AMOEBOID,
     EP_PFORTE,
-    EP_ENEMY,
+    EP_DONT_COLLIDE_WITH,
     EP_MAUER,
     EP_CAN_FALL,
     EP_CAN_SMASH,
     EP_CAN_PASS_MAGIC_WALL,
     EP_CAN_MOVE,
     EP_DONT_TOUCH,
-    EP_DONT_GO_TO,
+    EP_DONT_RUN_INTO,
     EP_GEM,
-    EP_CAN_EXPLODE,
+    EP_CAN_EXPLODE_BY_FIRE,
     EP_PUSHABLE,
     EP_PLAYER,
     EP_HAS_CONTENT,
@@ -2294,26 +2452,31 @@ void InitElementPropertiesEngine(int engine_version)
 
   static int no_wall_properties[] =
   {
-    EP_AMOEBALIVE,
-    EP_AMOEBOID,
-    EP_CAN_BE_CRUMBLED,
-    EP_ENEMY,
-    EP_CAN_FALL,
-    EP_CAN_SMASH,
+    EP_DIGGABLE,
+    EP_COLLECTIBLE,
+    EP_DONT_RUN_INTO,
+    EP_DONT_COLLIDE_WITH,
     EP_CAN_MOVE,
-    EP_DONT_GO_TO,
-    EP_FOOD_DARK_YAMYAM,
-    EP_GEM,
-    EP_FOOD_PENGUIN,
+    EP_CAN_FALL,
+    EP_CAN_SMASH_PLAYER,
+    EP_CAN_SMASH_ENEMIES,
+    EP_CAN_SMASH_EVERYTHING,
     EP_PUSHABLE,
+
+    EP_CAN_BE_CRUMBLED,
+
     EP_PLAYER,
-    EP_ACCESSIBLE,
-    EP_DIGGABLE,
-    EP_COLLECTIBLE,
-    EP_ACTIVE_BOMB,
+    EP_GEM,
+    EP_FOOD_DARK_YAMYAM,
+    EP_FOOD_PENGUIN,
     EP_BELT,
     EP_BELT_ACTIVE,
     EP_TUBE,
+    EP_AMOEBOID,
+    EP_AMOEBALIVE,
+    EP_ACTIVE_BOMB,
+
+    EP_ACCESSIBLE,
     -1
   };
 
@@ -2356,6 +2519,12 @@ void InitElementPropertiesEngine(int engine_version)
     SET_PROPERTY(i, EP_ACCESSIBLE, (IS_WALKABLE(i) ||
                                    IS_PASSABLE(i)));
 
+    /* ---------- SNAPPABLE ------------------------------------------------ */
+    SET_PROPERTY(i, EP_SNAPPABLE, (IS_DIGGABLE(i) ||
+                                  IS_COLLECTIBLE(i) ||
+                                  IS_SWITCHABLE(i) ||
+                                  i == EL_BD_ROCK));
+
     /* ---------- WALL ----------------------------------------------------- */
     SET_PROPERTY(i, EP_WALL, TRUE);    /* default: element is wall */
 
@@ -2392,6 +2561,31 @@ void InitElementPropertiesEngine(int engine_version)
       SET_PROPERTY(i, EP_EXPLOSION_PROOF, (IS_INDESTRUCTIBLE(i) &&
                                           !IS_WALKABLE_OVER(i) &&
                                           !IS_WALKABLE_UNDER(i)));
+
+    if (IS_CUSTOM_ELEMENT(i))
+    {
+      /* ---------- DONT_COLLIDE_WITH / DONT_RUN_INTO ---------------------- */
+      if (DONT_TOUCH(i))
+       SET_PROPERTY(i, EP_DONT_COLLIDE_WITH, TRUE);
+      if (DONT_COLLIDE_WITH(i))
+       SET_PROPERTY(i, EP_DONT_RUN_INTO, TRUE);
+
+      /* ---------- CAN_SMASH_ENEMIES / CAN_SMASH_PLAYER ------------------- */
+      if (CAN_SMASH_EVERYTHING(i))
+       SET_PROPERTY(i, EP_CAN_SMASH_ENEMIES, TRUE);
+      if (CAN_SMASH_ENEMIES(i))
+       SET_PROPERTY(i, EP_CAN_SMASH_PLAYER, TRUE);
+    }
+
+    /* ---------- CAN_SMASH ------------------------------------------------ */
+    SET_PROPERTY(i, EP_CAN_SMASH, (CAN_SMASH_PLAYER(i) ||
+                                  CAN_SMASH_ENEMIES(i) ||
+                                  CAN_SMASH_EVERYTHING(i)));
+
+    /* ---------- CAN_EXPLODE ---------------------------------------------- */
+    SET_PROPERTY(i, EP_CAN_EXPLODE, (CAN_EXPLODE_BY_FIRE(i) ||
+                                    CAN_EXPLODE_SMASHED(i) ||
+                                    CAN_EXPLODE_BY_FIRE(i)));
   }
 
 #if 0
@@ -2436,6 +2630,20 @@ void InitElementPropertiesEngine(int engine_version)
                 (level.em_slippery_gems &&
                  engine_version > VERSION_IDENT(2,0,1)));
   }
+
+  /* dynamically adjust element properties according to game engine version */
+#if 0
+  if (engine_version < RELEASE_IDENT(2,2,0,7))
+#endif
+  {
+    for (i=0; i < NUM_CUSTOM_ELEMENTS; i++)
+    {
+      int element = EL_CUSTOM_START + i;
+
+      element_info[element].push_delay_fixed = 2;
+      element_info[element].push_delay_random = 8;
+    }
+  }
 }
 
 static void InitGlobal()