rnd-20031008-1-src
[rocksndiamonds.git] / src / init.c
index 20a84d1e0b400be248f5db6ff50844f8946a16a5..a4a926005cc45df991a2855d54b0146c47b3bdd5 100644 (file)
@@ -291,8 +291,13 @@ void InitFontGraphicInfo()
   /* ---------- initialize font graphic definitions ---------- */
 
   /* always start with reliable default values (normal font graphics) */
+#if 1
+  for (i=0; i < NUM_FONTS; i++)
+    font_info[i].graphic = IMG_FONT_INITIAL_1;
+#else
   for (i=0; i < NUM_FONTS; i++)
     font_info[i].graphic = FONT_INITIAL_1;
+#endif
 
   /* initialize normal font/graphic mapping from static configuration */
   for (i=0; font_to_graphic[i].font_nr > -1; i++)
@@ -411,24 +416,30 @@ void InitElementGraphicInfo()
     for (act=0; act<NUM_ACTIONS; act++)
     {
       element_info[i].graphic[act] = -1;
+      element_info[i].crumbled[act] = -1;
 
       for (dir=0; dir<NUM_DIRECTIONS; dir++)
+      {
        element_info[i].direction_graphic[act][dir] = -1;
+       element_info[i].direction_crumbled[act][dir] = -1;
+      }
     }
   }
 
   /* initialize normal element/graphic mapping from static configuration */
   for (i=0; element_to_graphic[i].element > -1; i++)
   {
-    int element   = element_to_graphic[i].element;
-    int action    = element_to_graphic[i].action;
-    int direction = element_to_graphic[i].direction;
-    int graphic   = element_to_graphic[i].graphic;
+    int element      = element_to_graphic[i].element;
+    int action       = element_to_graphic[i].action;
+    int direction    = element_to_graphic[i].direction;
+    boolean crumbled = element_to_graphic[i].crumbled;
+    int graphic      = element_to_graphic[i].graphic;
 
     if (graphic_info[graphic].bitmap == NULL)
       continue;
 
-    if ((action > -1 || direction > -1) && el2img(element) != -1)
+    if ((action > -1 || direction > -1 || crumbled == TRUE) &&
+       el2img(element) != -1)
     {
       boolean base_redefined = getImageListEntry(el2img(element))->redefined;
       boolean act_dir_redefined = getImageListEntry(graphic)->redefined;
@@ -444,10 +455,20 @@ void InitElementGraphicInfo()
     if (action < 0)
       action = ACTION_DEFAULT;
 
-    if (direction > -1)
-      element_info[element].direction_graphic[action][direction] = graphic;
+    if (crumbled)
+    {
+      if (direction > -1)
+       element_info[element].direction_crumbled[action][direction] = graphic;
+      else
+       element_info[element].crumbled[action] = graphic;
+    }
     else
-      element_info[element].graphic[action] = graphic;
+    {
+      if (direction > -1)
+       element_info[element].direction_graphic[action][direction] = graphic;
+      else
+       element_info[element].graphic[action] = graphic;
+    }
   }
 
   /* initialize normal element/graphic mapping from dynamic configuration */
@@ -458,6 +479,13 @@ void InitElementGraphicInfo()
     int direction = property_mapping[i].ext2_index;
     int special   = property_mapping[i].ext3_index;
     int graphic   = property_mapping[i].artwork_index;
+    boolean crumbled = FALSE;
+
+    if (special == GFX_SPECIAL_ARG_CRUMBLED)
+    {
+      special = -1;
+      crumbled = TRUE;
+    }
 
     if (graphic_info[graphic].bitmap == NULL)
       continue;
@@ -468,42 +496,128 @@ void InitElementGraphicInfo()
     if (action < 0)
       action = ACTION_DEFAULT;
 
-    if (direction < 0)
+    if (crumbled)
+    {
+      if (direction < 0)
+       for (dir=0; dir<NUM_DIRECTIONS; dir++)
+         element_info[element].direction_crumbled[action][dir] = -1;
+
+      if (direction > -1)
+       element_info[element].direction_crumbled[action][direction] = graphic;
+      else
+       element_info[element].crumbled[action] = graphic;
+    }
+    else
+    {
+      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
+       element_info[element].graphic[action] = graphic;
+    }
+  }
+
+  /* now copy all graphics that are defined to be cloned from other graphics */
+  for (i=0; i<MAX_NUM_ELEMENTS; i++)
+  {
+    int graphic = element_info[i].graphic[ACTION_DEFAULT];
+    int crumbled_like, diggable_like;
+
+    if (graphic == -1)
+      continue;
+
+    crumbled_like = graphic_info[graphic].crumbled_like;
+    diggable_like = graphic_info[graphic].diggable_like;
+
+    if (crumbled_like != -1 && element_info[i].crumbled[ACTION_DEFAULT] == -1)
+    {
+      for (act=0; act<NUM_ACTIONS; act++)
+       element_info[i].crumbled[act] =
+         element_info[crumbled_like].crumbled[act];
+      for (act=0; act<NUM_ACTIONS; act++)
+       for (dir=0; dir<NUM_DIRECTIONS; dir++)
+         element_info[i].direction_crumbled[act][dir] =
+           element_info[crumbled_like].direction_crumbled[act][dir];
+    }
+
+    if (diggable_like != -1 && element_info[i].graphic[ACTION_DIGGING] == -1)
+    {
+      element_info[i].graphic[ACTION_DIGGING] =
+       element_info[diggable_like].graphic[ACTION_DIGGING];
       for (dir=0; dir<NUM_DIRECTIONS; dir++)
-       element_info[element].direction_graphic[action][dir] = -1;
+       element_info[i].direction_graphic[ACTION_DIGGING][dir] =
+         element_info[diggable_like].direction_graphic[ACTION_DIGGING][dir];
+    }
+  }
 
-    if (direction > -1)
-      element_info[element].direction_graphic[action][direction] = graphic;
-    else
-      element_info[element].graphic[action] = graphic;
+#if 1
+  /* now set all undefined/invalid graphics to -1 to set to default after it */
+  for (i=0; i<MAX_NUM_ELEMENTS; i++)
+  {
+    for (act=0; act<NUM_ACTIONS; act++)
+    {
+      int graphic;
+
+      graphic = element_info[i].graphic[act];
+      if (graphic > 0 && graphic_info[graphic].bitmap == NULL)
+       element_info[i].graphic[act] = -1;
+
+      graphic = element_info[i].crumbled[act];
+      if (graphic > 0 && graphic_info[graphic].bitmap == NULL)
+       element_info[i].crumbled[act] = -1;
+
+      for (dir=0; dir<NUM_DIRECTIONS; dir++)
+      {
+       graphic = element_info[i].direction_graphic[act][dir];
+       if (graphic > 0 && graphic_info[graphic].bitmap == NULL)
+         element_info[i].direction_graphic[act][dir] = -1;
+
+       graphic = element_info[i].direction_crumbled[act][dir];
+       if (graphic > 0 && graphic_info[graphic].bitmap == NULL)
+         element_info[i].direction_crumbled[act][dir] = -1;
+      }
+    }
   }
+#endif
 
   /* now set all '-1' values to element specific default values */
   for (i=0; i<MAX_NUM_ELEMENTS; i++)
   {
     int default_graphic = element_info[i].graphic[ACTION_DEFAULT];
+    int default_crumbled = element_info[i].crumbled[ACTION_DEFAULT];
     int default_direction_graphic[NUM_DIRECTIONS];
+    int default_direction_crumbled[NUM_DIRECTIONS];
 
     if (default_graphic == -1)
       default_graphic = IMG_CHAR_QUESTION;
+    if (default_crumbled == -1)
+      default_crumbled = IMG_EMPTY;
 
     for (dir=0; dir<NUM_DIRECTIONS; dir++)
     {
       default_direction_graphic[dir] =
        element_info[i].direction_graphic[ACTION_DEFAULT][dir];
+      default_direction_crumbled[dir] =
+       element_info[i].direction_crumbled[ACTION_DEFAULT][dir];
 
       if (default_direction_graphic[dir] == -1)
        default_direction_graphic[dir] = default_graphic;
+      if (default_direction_crumbled[dir] == -1)
+       default_direction_crumbled[dir] = default_crumbled;
     }
 
     for (act=0; act<NUM_ACTIONS; act++)
     {
-      boolean act_remove = (act == ACTION_DIGGING ||
-                           act == ACTION_SNAPPING ||
-                           act == ACTION_COLLECTING);
+      boolean act_remove = ((IS_DIGGABLE(i)    && act == ACTION_DIGGING)  ||
+                           (IS_SNAPPABLE(i)   && act == ACTION_SNAPPING) ||
+                           (IS_COLLECTIBLE(i) && act == ACTION_COLLECTING));
 
       /* generic default action graphic (defined by "[default]" directive) */
       int default_action_graphic = element_info[EL_DEFAULT].graphic[act];
+      int default_action_crumbled = element_info[EL_DEFAULT].crumbled[act];
 
       /* look for special default action graphic (classic game specific) */
       if (IS_BD_ELEMENT(i) && element_info[EL_BD_DEFAULT].graphic[act] != -1)
@@ -513,29 +627,76 @@ void InitElementGraphicInfo()
       if (IS_SB_ELEMENT(i) && element_info[EL_SB_DEFAULT].graphic[act] != -1)
        default_action_graphic = element_info[EL_SB_DEFAULT].graphic[act];
 
+      if (IS_BD_ELEMENT(i) && element_info[EL_BD_DEFAULT].crumbled[act] != -1)
+       default_action_crumbled = element_info[EL_BD_DEFAULT].crumbled[act];
+      if (IS_SP_ELEMENT(i) && element_info[EL_SP_DEFAULT].crumbled[act] != -1)
+       default_action_crumbled = element_info[EL_SP_DEFAULT].crumbled[act];
+      if (IS_SB_ELEMENT(i) && element_info[EL_SB_DEFAULT].crumbled[act] != -1)
+       default_action_crumbled = element_info[EL_SB_DEFAULT].crumbled[act];
+
       if (default_action_graphic == -1)
        default_action_graphic = default_graphic;
+      if (default_action_crumbled == -1)
+       default_action_crumbled = default_crumbled;
 
       for (dir=0; dir<NUM_DIRECTIONS; dir++)
       {
        int default_action_direction_graphic = element_info[i].graphic[act];
+       int default_action_direction_crumbled = element_info[i].crumbled[act];
 
        /* no graphic for current action -- use default direction graphic */
        if (default_action_direction_graphic == -1)
          default_action_direction_graphic =
            (act_remove ? IMG_EMPTY : default_direction_graphic[dir]);
+       if (default_action_direction_crumbled == -1)
+         default_action_direction_crumbled =
+           (act_remove ? IMG_EMPTY : default_direction_crumbled[dir]);
 
        if (element_info[i].direction_graphic[act][dir] == -1)
          element_info[i].direction_graphic[act][dir] =
            default_action_direction_graphic;
+       if (element_info[i].direction_crumbled[act][dir] == -1)
+         element_info[i].direction_crumbled[act][dir] =
+           default_action_direction_crumbled;
       }
 
       /* no graphic for this specific action -- use default action graphic */
       if (element_info[i].graphic[act] == -1)
        element_info[i].graphic[act] =
          (act_remove ? IMG_EMPTY : default_action_graphic);
+      if (element_info[i].crumbled[act] == -1)
+       element_info[i].crumbled[act] =
+         (act_remove ? IMG_EMPTY : default_action_crumbled);
+    }
+  }
+
+#if 1
+  /* set animation mode to "none" for each graphic with only 1 frame */
+  for (i=0; i<MAX_NUM_ELEMENTS; i++)
+  {
+    for (act=0; act<NUM_ACTIONS; act++)
+    {
+      int graphic = element_info[i].graphic[act];
+      int crumbled = element_info[i].crumbled[act];
+
+      if (graphic_info[graphic].anim_frames == 1)
+       graphic_info[graphic].anim_mode = ANIM_NONE;
+      if (graphic_info[crumbled].anim_frames == 1)
+       graphic_info[crumbled].anim_mode = ANIM_NONE;
+
+      for (dir=0; dir<NUM_DIRECTIONS; dir++)
+      {
+       graphic = element_info[i].direction_graphic[act][dir];
+       crumbled = element_info[i].direction_crumbled[act][dir];
+
+       if (graphic_info[graphic].anim_frames == 1)
+         graphic_info[graphic].anim_mode = ANIM_NONE;
+       if (graphic_info[crumbled].anim_frames == 1)
+         graphic_info[crumbled].anim_mode = ANIM_NONE;
+      }
     }
   }
+#endif
 
 #if 0
 #if DEBUG
@@ -595,6 +756,26 @@ void InitElementSpecialGraphicInfo()
     if (special >= 0 && special < NUM_SPECIAL_GFX_ARGS)
       element_info[element].special_graphic[special] = graphic;
   }
+
+#if 1
+  /* now set all undefined/invalid graphics to default */
+  for (i=0; i < MAX_NUM_ELEMENTS; i++)
+    for (j=0; j < NUM_SPECIAL_GFX_ARGS; j++)
+      if (graphic_info[element_info[i].special_graphic[j]].bitmap == NULL)
+       element_info[i].special_graphic[j] =
+         element_info[i].graphic[ACTION_DEFAULT];
+#endif
+}
+
+static int get_element_from_token(char *token)
+{
+  int i;
+
+  for (i=0; i < MAX_NUM_ELEMENTS; i++)
+    if (strcmp(element_info[i].token_name, token) == 0)
+      return i;
+
+  return -1;
 }
 
 static void set_graphic_parameters(int graphic, char **parameter_raw)
@@ -607,10 +788,15 @@ static void set_graphic_parameters(int graphic, char **parameter_raw)
 
   /* get integer values from string parameters */
   for (i=0; i < NUM_GFX_ARGS; i++)
+  {
     parameter[i] =
       get_parameter_value(image_config_suffix[i].token, parameter_raw[i],
                          image_config_suffix[i].type);
 
+    if (image_config_suffix[i].type == TYPE_TOKEN)
+      parameter[i] = get_element_from_token(parameter_raw[i]);
+  }
+
   graphic_info[graphic].bitmap = src_bitmap;
 
   /* start with reliable default values */
@@ -620,6 +806,9 @@ static void set_graphic_parameters(int graphic, char **parameter_raw)
   graphic_info[graphic].height = TILEY;
   graphic_info[graphic].offset_x = 0;  /* one or both of these values ... */
   graphic_info[graphic].offset_y = 0;  /* ... will be corrected later */
+  graphic_info[graphic].crumbled_like = -1;    /* do not use clone element */
+  graphic_info[graphic].diggable_like = -1;    /* do not use clone element */
+  graphic_info[graphic].border_size = TILEX / 8;  /* "CRUMBLED" border size */
 
   /* optional x and y tile position of animation frame sequence */
   if (parameter[GFX_ARG_XPOS] != ARG_UNDEFINED_VALUE)
@@ -686,8 +875,10 @@ static void set_graphic_parameters(int graphic, char **parameter_raw)
     graphic_info[graphic].anim_delay = 1;
 
   graphic_info[graphic].anim_mode = parameter[GFX_ARG_ANIM_MODE];
+#if 0
   if (graphic_info[graphic].anim_frames == 1)
     graphic_info[graphic].anim_mode = ANIM_NONE;
+#endif
 
   /* automatically determine correct start frame, if not defined */
   if (parameter[GFX_ARG_START_FRAME] == ARG_UNDEFINED_VALUE)
@@ -701,6 +892,18 @@ static void set_graphic_parameters(int graphic, char **parameter_raw)
   /* animation synchronized with global frame counter, not move position */
   graphic_info[graphic].anim_global_sync = parameter[GFX_ARG_GLOBAL_SYNC];
 
+  /* optional element for cloning crumble graphics */
+  if (parameter[GFX_ARG_CRUMBLED_LIKE] != ARG_UNDEFINED_VALUE)
+    graphic_info[graphic].crumbled_like = parameter[GFX_ARG_CRUMBLED_LIKE];
+
+  /* optional element for cloning digging graphics */
+  if (parameter[GFX_ARG_DIGGABLE_LIKE] != ARG_UNDEFINED_VALUE)
+    graphic_info[graphic].diggable_like = parameter[GFX_ARG_DIGGABLE_LIKE];
+
+  /* optional border size for "crumbling" diggable graphics */
+  if (parameter[GFX_ARG_BORDER_SIZE] != ARG_UNDEFINED_VALUE)
+    graphic_info[graphic].border_size = parameter[GFX_ARG_BORDER_SIZE];
+
   /* this is only used for toon animations */
   graphic_info[graphic].step_offset = parameter[GFX_ARG_STEP_OFFSET];
   graphic_info[graphic].step_delay  = parameter[GFX_ARG_STEP_DELAY];
@@ -708,6 +911,9 @@ static void set_graphic_parameters(int graphic, char **parameter_raw)
   /* this is only used for drawing font characters */
   graphic_info[graphic].draw_x = parameter[GFX_ARG_DRAW_XOFFSET];
   graphic_info[graphic].draw_y = parameter[GFX_ARG_DRAW_YOFFSET];
+
+  /* this is only used for drawing envelope graphics */
+  graphic_info[graphic].draw_masked = parameter[GFX_ARG_DRAW_MASKED];
 }
 
 static void InitGraphicInfo()
@@ -731,6 +937,10 @@ static void InitGraphicInfo()
 
   graphic_info = checked_calloc(num_images * sizeof(struct GraphicInfo));
 
+#if 0
+  printf("::: graphic_info: %d entries\n", num_images);
+#endif
+
 #if defined(TARGET_X11_NATIVE_PERFORMANCE_WORKAROUND)
   if (clipmasks_initialized)
   {
@@ -755,7 +965,13 @@ static void InitGraphicInfo()
     int first_frame, last_frame;
 
 #if 0
-    printf("::: image: '%s'\n", image->token);
+    printf("::: image: '%s' [%d]\n", image->token, i);
+#endif
+
+#if 0
+    printf("::: image # %d: '%s' ['%s']\n",
+          i, image->token,
+          getTokenFromImageID(i));
 #endif
 
     set_graphic_parameters(i, image->parameter);
@@ -998,7 +1214,7 @@ static void InitSoundInfo()
     sound_info[i].loop = FALSE;
 
 #if 0
-    printf("::: sound: '%s'\n", sound->token);
+    printf("::: sound %d: '%s'\n", i, sound->token);
 #endif
 
     /* determine all loop sounds and identify certain sound classes */
@@ -1012,9 +1228,9 @@ static void InitSoundInfo()
                 element_action_info[j].suffix) == 0)
       {
        sound_effect_properties[i] = element_action_info[j].value;
+       sound_info[i].loop = element_action_info[j].is_loop_sound;
 
-       if (element_action_info[j].is_loop_sound)
-         sound_info[i].loop = TRUE;
+       break;
       }
     }
 
@@ -1154,7 +1370,7 @@ void InitElementPropertiesStatic()
     -1
   };
 
-  static int ep_collectible[] =
+  static int ep_collectible_only[] =
   {
     EL_BD_DIAMOND,
     EL_EMERALD,
@@ -1182,7 +1398,10 @@ void InitElementPropertiesStatic()
     EL_SHIELD_NORMAL,
     EL_SHIELD_DEADLY,
     EL_EXTRA_TIME,
-    EL_ENVELOPE,
+    EL_ENVELOPE_1,
+    EL_ENVELOPE_2,
+    EL_ENVELOPE_3,
+    EL_ENVELOPE_4,
     EL_SPEED_PILL,
     -1
   };
@@ -1209,9 +1428,9 @@ void InitElementPropertiesStatic()
 
     /* !!! maybe this should better be handled by 'ep_diggable' !!! */
 #if 1
-    EL_SP_BUGGY_BASE_ACTIVE,
-    EL_TRAP_ACTIVE,
     EL_LANDMINE,
+    EL_TRAP_ACTIVE,
+    EL_SP_BUGGY_BASE_ACTIVE,
 #endif
     -1
   };
@@ -1291,7 +1510,7 @@ void InitElementPropertiesStatic()
     EL_SIGN_EXIT,
     EL_SIGN_YINYANG,
     EL_SIGN_OTHER,
-    EL_STEELWALL_SLANTED,
+    EL_STEELWALL_SLIPPERY,
     EL_EMC_STEELWALL_1,
     EL_EMC_STEELWALL_2,
     EL_EMC_STEELWALL_3,
@@ -1345,7 +1564,7 @@ void InitElementPropertiesStatic()
 
   static int ep_slippery[] =
   {
-    EL_WALL_CRUMBLED,
+    EL_WALL_SLIPPERY,
     EL_BD_WALL,
     EL_ROCK,
     EL_BD_ROCK,
@@ -1374,7 +1593,7 @@ void InitElementPropertiesStatic()
     EL_SP_CHIP_TOP,
     EL_SP_CHIP_BOTTOM,
     EL_SPEED_PILL,
-    EL_STEELWALL_SLANTED,
+    EL_STEELWALL_SLIPPERY,
     EL_PEARL,
     EL_CRYSTAL,
     -1
@@ -1539,6 +1758,7 @@ void InitElementPropertiesStatic()
     EL_SOKOBAN_FIELD_EMPTY,
     EL_EXIT_OPEN,
     EL_SP_EXIT_OPEN,
+    EL_SP_EXIT_OPENING,
     EL_GATE_1,
     EL_GATE_2,
     EL_GATE_3,
@@ -1610,6 +1830,16 @@ void InitElementPropertiesStatic()
     -1
   };
 
+  static int ep_droppable[] =
+  {
+    -1
+  };
+
+  static int ep_can_explode_1x1[] =
+  {
+    -1
+  };
+
   static int ep_pushable[] =
   {
     EL_ROCK,
@@ -1629,21 +1859,13 @@ void InitElementPropertiesStatic()
     -1
   };
 
-  static int ep_can_be_crumbled[] =
-  {
-    EL_SAND,
-    EL_LANDMINE,
-    EL_TRAP,
-    EL_TRAP_ACTIVE,
-    -1
-  };
-
   static int ep_player[] =
   {
     EL_PLAYER_1,
     EL_PLAYER_2,
     EL_PLAYER_3,
     EL_PLAYER_4,
+    EL_SP_MURPHY,
     -1
   };
 
@@ -1695,7 +1917,7 @@ void InitElementPropertiesStatic()
   {
     EL_EMPTY,
     EL_SAND,
-    EL_WALL_CRUMBLED,
+    EL_WALL_SLIPPERY,
     EL_BD_WALL,
     EL_ROCK,
     EL_BD_ROCK,
@@ -1722,6 +1944,9 @@ void InitElementPropertiesStatic()
 
   static int ep_sp_element[] =
   {
+    /* should always be valid */
+    EL_EMPTY,
+
     EL_SP_EMPTY,
     EL_SP_ZONK,
     EL_SP_BASE,
@@ -1772,6 +1997,8 @@ void InitElementPropertiesStatic()
     EL_SP_TERMINAL_ACTIVE,
     EL_SP_BUGGY_BASE_ACTIVATING,
     EL_SP_BUGGY_BASE_ACTIVE,
+    EL_SP_EXIT_OPENING,
+    EL_SP_EXIT_CLOSING,
     -1
   };
 
@@ -1872,7 +2099,7 @@ void InitElementPropertiesStatic()
     EL_EXIT_OPENING,
     EL_EXIT_OPEN,
     EL_WALL,
-    EL_WALL_CRUMBLED,
+    EL_WALL_SLIPPERY,
     EL_EXPANDABLE_WALL,
     EL_EXPANDABLE_WALL_HORIZONTAL,
     EL_EXPANDABLE_WALL_VERTICAL,
@@ -1903,7 +2130,7 @@ void InitElementPropertiesStatic()
     EL_INVISIBLE_STEELWALL_ACTIVE,
     EL_INVISIBLE_WALL,
     EL_INVISIBLE_WALL_ACTIVE,
-    EL_STEELWALL_SLANTED,
+    EL_STEELWALL_SLIPPERY,
     EL_EMC_STEELWALL_1,
     EL_EMC_STEELWALL_2,
     EL_EMC_STEELWALL_3,
@@ -1927,7 +2154,7 @@ void InitElementPropertiesStatic()
     EL_EXPANDABLE_WALL_VERTICAL,
     EL_EXPANDABLE_WALL_ANY,
     EL_BD_WALL,
-    EL_WALL_CRUMBLED,
+    EL_WALL_SLIPPERY,
     EL_EXIT_CLOSED,
     EL_EXIT_OPENING,
     EL_EXIT_OPEN,
@@ -2030,7 +2257,7 @@ void InitElementPropertiesStatic()
     EL_SIGN_EXIT,
     EL_SIGN_YINYANG,
     EL_SIGN_OTHER,
-    EL_STEELWALL_SLANTED,
+    EL_STEELWALL_SLIPPERY,
     EL_EMC_STEELWALL_1,
     EL_EMC_STEELWALL_2,
     EL_EMC_STEELWALL_3,
@@ -2224,7 +2451,7 @@ void InitElementPropertiesStatic()
     EL_SAND,
     EL_WALL,
     EL_BD_WALL,
-    EL_WALL_CRUMBLED,
+    EL_WALL_SLIPPERY,
     EL_STEELWALL,
     EL_AMOEBA_DEAD,
     EL_QUICKSAND_EMPTY,
@@ -2342,7 +2569,7 @@ void InitElementPropertiesStatic()
     EL_SIGN_EXIT,
     EL_SIGN_YINYANG,
     EL_SIGN_OTHER,
-    EL_STEELWALL_SLANTED,
+    EL_STEELWALL_SLIPPERY,
     EL_EMC_STEELWALL_1,
     EL_EMC_STEELWALL_2,
     EL_EMC_STEELWALL_3,
@@ -2358,6 +2585,20 @@ void InitElementPropertiesStatic()
     -1
   };
 
+  static int ep_em_slippery_wall[] =
+  {
+    -1
+  };
+
+  static int ep_gfx_crumbled[] =
+  {
+    EL_SAND,
+    EL_LANDMINE,
+    EL_TRAP,
+    EL_TRAP_ACTIVE,
+    -1
+  };
+
   static struct
   {
     int *elements;
@@ -2365,7 +2606,7 @@ void InitElementPropertiesStatic()
   } element_properties[] =
   {
     { ep_diggable,             EP_DIGGABLE             },
-    { ep_collectible,          EP_COLLECTIBLE          },
+    { ep_collectible_only,     EP_COLLECTIBLE_ONLY     },
     { ep_dont_run_into,                EP_DONT_RUN_INTO        },
     { ep_dont_collide_with,    EP_DONT_COLLIDE_WITH    },
     { ep_dont_touch,           EP_DONT_TOUCH           },
@@ -2386,10 +2627,10 @@ void InitElementPropertiesStatic()
     { ep_passable_over,                EP_PASSABLE_OVER        },
     { ep_passable_inside,      EP_PASSABLE_INSIDE      },
     { ep_passable_under,       EP_PASSABLE_UNDER       },
+    { ep_droppable,            EP_DROPPABLE            },
+    { ep_can_explode_1x1,      EP_CAN_EXPLODE_1X1      },
     { ep_pushable,             EP_PUSHABLE             },
 
-    { ep_can_be_crumbled,      EP_CAN_BE_CRUMBLED      },
-
     { ep_player,               EP_PLAYER               },
     { ep_can_pass_magic_wall,  EP_CAN_PASS_MAGIC_WALL  },
     { ep_switchable,           EP_SWITCHABLE           },
@@ -2414,6 +2655,10 @@ void InitElementPropertiesStatic()
     { ep_active_bomb,          EP_ACTIVE_BOMB          },
     { ep_inactive,             EP_INACTIVE             },
 
+    { ep_em_slippery_wall,     EP_EM_SLIPPERY_WALL     },
+
+    { ep_gfx_crumbled,         EP_GFX_CRUMBLED         },
+
     { NULL,                    -1                      }
   };
 
@@ -2502,14 +2747,13 @@ void InitElementPropertiesEngine(int engine_version)
     EP_BELT_SWITCH,
     EP_WALKABLE_UNDER,
     EP_EM_SLIPPERY_WALL,
-    EP_CAN_BE_CRUMBLED,
   };
 #endif
 
   static int no_wall_properties[] =
   {
     EP_DIGGABLE,
-    EP_COLLECTIBLE,
+    EP_COLLECTIBLE_ONLY,
     EP_DONT_RUN_INTO,
     EP_DONT_COLLIDE_WITH,
     EP_CAN_MOVE,
@@ -2519,8 +2763,6 @@ void InitElementPropertiesEngine(int engine_version)
     EP_CAN_SMASH_EVERYTHING,
     EP_PUSHABLE,
 
-    EP_CAN_BE_CRUMBLED,
-
     EP_PLAYER,
     EP_GEM,
     EP_FOOD_DARK_YAMYAM,
@@ -2575,6 +2817,10 @@ void InitElementPropertiesEngine(int engine_version)
     SET_PROPERTY(i, EP_ACCESSIBLE, (IS_WALKABLE(i) ||
                                    IS_PASSABLE(i)));
 
+    /* ---------- COLLECTIBLE ---------------------------------------------- */
+    SET_PROPERTY(i, EP_COLLECTIBLE, (IS_COLLECTIBLE_ONLY(i) ||
+                                    IS_DROPPABLE(i)));
+
     /* ---------- SNAPPABLE ------------------------------------------------ */
     SET_PROPERTY(i, EP_SNAPPABLE, (IS_DIGGABLE(i) ||
                                   IS_COLLECTIBLE(i) ||
@@ -2642,6 +2888,20 @@ void InitElementPropertiesEngine(int engine_version)
     SET_PROPERTY(i, EP_CAN_EXPLODE, (CAN_EXPLODE_BY_FIRE(i) ||
                                     CAN_EXPLODE_SMASHED(i) ||
                                     CAN_EXPLODE_IMPACT(i)));
+
+    /* ---------- CAN_EXPLODE_3X3 ------------------------------------------ */
+    SET_PROPERTY(i, EP_CAN_EXPLODE_3X3, (CAN_EXPLODE(i) &&
+                                        !CAN_EXPLODE_1X1(i)));
+
+    /* ---------- CAN_CHANGE ----------------------------------------------- */
+    SET_PROPERTY(i, EP_CAN_CHANGE, FALSE);     /* default: cannot change */
+    for (j=0; j < element_info[i].num_change_pages; j++)
+      if (element_info[i].change_page[j].can_change)
+       SET_PROPERTY(i, EP_CAN_CHANGE, TRUE);
+
+    /* ---------- GFX_CRUMBLED --------------------------------------------- */
+    SET_PROPERTY(i, EP_GFX_CRUMBLED,
+                element_info[i].crumbled[ACTION_DEFAULT] != IMG_EMPTY);
   }
 
 #if 0
@@ -3059,7 +3319,8 @@ static void InitImages()
 #endif
 
 #if 0
-  printf("::: InitImages ['%s', '%s'] ['%s', '%s']\n",
+  printf("::: InitImages for '%s' ['%s', '%s'] ['%s', '%s']\n",
+        leveldir_current->identifier,
         artwork.gfx_current_identifier,
         artwork.gfx_current->identifier,
         leveldir_current->graphics_set,
@@ -3074,19 +3335,31 @@ static void InitImages()
   ReinitializeGraphics();
 }
 
-static void InitSound()
+static void InitSound(char *identifier)
 {
+  if (identifier == NULL)
+    identifier = artwork.snd_current->identifier;
+
+#if 1
+  /* set artwork path to send it to the sound server process */
   setLevelArtworkDir(artwork.snd_first);
+#endif
 
-  InitReloadCustomSounds(artwork.snd_current->identifier);
+  InitReloadCustomSounds(identifier);
   ReinitializeSounds();
 }
 
-static void InitMusic()
+static void InitMusic(char *identifier)
 {
+  if (identifier == NULL)
+    identifier = artwork.mus_current->identifier;
+
+#if 1
+  /* set artwork path to send it to the sound server process */
   setLevelArtworkDir(artwork.mus_first);
+#endif
 
-  InitReloadCustomMusic(artwork.mus_current->identifier);
+  InitReloadCustomMusic(identifier);
   ReinitializeMusic();
 }
 
@@ -3113,186 +3386,134 @@ void InitNetworkServer()
 #endif
 }
 
-void ReloadCustomArtwork()
+static char *getNewArtworkIdentifier(int type)
 {
-  static char *leveldir_current_identifier = NULL;
-  static boolean last_override_level_graphics = FALSE;
-  static boolean last_override_level_sounds = FALSE;
-  static boolean last_override_level_music = FALSE;
-  static boolean last_own_level_graphics_set = FALSE;
-  static boolean last_own_level_sounds_set = FALSE;
-  static boolean last_own_level_music_set = FALSE;
-  boolean level_graphics_set_changed = FALSE;
-  boolean level_sounds_set_changed = FALSE;
-  boolean level_music_set_changed = FALSE;
-  /* identifier for new artwork; default: artwork configured in setup */
-#if 0
-  char *gfx_new_identifier = artwork.gfx_current->identifier;
-  char *snd_new_identifier = artwork.snd_current->identifier;
-  char *mus_new_identifier = artwork.mus_current->identifier;
+  static char *leveldir_current_identifier[3] = { NULL, NULL, NULL };
+  static boolean last_override_level_artwork[3] = { FALSE, FALSE, FALSE };
+  static boolean last_has_level_artwork_set[3] = { FALSE, FALSE, FALSE };
+  static boolean initialized[3] = { FALSE, FALSE, FALSE };
+  TreeInfo *artwork_first_node = ARTWORK_FIRST_NODE(artwork, type);
+  boolean setup_override_artwork = SETUP_OVERRIDE_ARTWORK(setup, type);
+  char *setup_artwork_set = SETUP_ARTWORK_SET(setup, type);
+  char *leveldir_identifier = leveldir_current->identifier;
+#if 1
+  /* !!! setLevelArtworkDir() should be moved to an earlier stage !!! */
+  char *leveldir_artwork_set = setLevelArtworkDir(artwork_first_node);
 #else
-  char *gfx_new_identifier = artwork.gfx_current_identifier;
-  char *snd_new_identifier = artwork.snd_current_identifier;
-  char *mus_new_identifier = artwork.mus_current_identifier;
-#endif
-  boolean redraw_screen = FALSE;
-
-#if 0
-  if (leveldir_current_identifier == NULL)
-    leveldir_current_identifier = leveldir_current->identifier;
-#endif
-
-#if 0
-  printf("CURRENT GFX: '%s' ['%s']\n", artwork.gfx_current->identifier,
-        leveldir_current->graphics_set);
-  printf("CURRENT LEV: '%s' / '%s'\n", leveldir_current_identifier,
-        leveldir_current->identifier);
-#endif
-
-#if 0
-  printf("graphics --> '%s' ('%s')\n",
-        artwork.gfx_current_identifier, artwork.gfx_current->filename);
-  printf("sounds   --> '%s' ('%s')\n",
-        artwork.snd_current_identifier, artwork.snd_current->filename);
-  printf("music    --> '%s' ('%s')\n",
-        artwork.mus_current_identifier, artwork.mus_current->filename);
+  char *leveldir_artwork_set = LEVELDIR_ARTWORK_SET(leveldir_current, type);
 #endif
+  boolean has_level_artwork_set = (leveldir_artwork_set != NULL);
+  char *artwork_current_identifier;
+  char *artwork_new_identifier = NULL; /* default: nothing has changed */
 
   /* leveldir_current may be invalid (level group, parent link) */
   if (!validLevelSeries(leveldir_current))
-    return;
+    return NULL;
+
+  /* 1st step: determine artwork set to be activated in descending order:
+     --------------------------------------------------------------------
+     1. setup artwork (when configured to override everything else)
+     2. artwork set configured in "levelinfo.conf" of current level set
+        (artwork in level directory will have priority when loading later)
+     3. artwork in level directory (stored in artwork sub-directory)
+     4. setup artwork (currently configured in setup menu) */
+
+  if (setup_override_artwork)
+    artwork_current_identifier = setup_artwork_set;
+  else if (leveldir_artwork_set != NULL)
+    artwork_current_identifier = leveldir_artwork_set;
+  else if (getTreeInfoFromIdentifier(artwork_first_node, leveldir_identifier))
+    artwork_current_identifier = leveldir_identifier;
+  else
+    artwork_current_identifier = setup_artwork_set;
 
-  /* when a new level series was selected, check if there was a change
-     in custom artwork stored in level series directory */
-  if (1 || leveldir_current_identifier != leveldir_current->identifier)
-  {
-#if 0
-    char *identifier_old = leveldir_current_identifier;
-#endif
-    char *identifier_new = leveldir_current->identifier;
 
-#if 0
-    printf("::: 1: ['%s'] '%s', '%s' [%lx, %lx]\n",
-          gfx_new_identifier, identifier_old, identifier_new,
-          getTreeInfoFromIdentifier(artwork.gfx_first, identifier_old),
-          getTreeInfoFromIdentifier(artwork.gfx_first, identifier_new));
-#endif
+  /* 2nd step: check if it is really needed to reload artwork set
+     ------------------------------------------------------------ */
 
 #if 0
-    if (getTreeInfoFromIdentifier(artwork.gfx_first, identifier_new) == NULL)
-      gfx_new_identifier = GRAPHICS_SUBDIR;
-    else if (getTreeInfoFromIdentifier(artwork.gfx_first, identifier_old) !=
-            getTreeInfoFromIdentifier(artwork.gfx_first, identifier_new))
-      gfx_new_identifier = identifier_new;
-#else
-    if (getTreeInfoFromIdentifier(artwork.gfx_first, identifier_new))
-      gfx_new_identifier = identifier_new;
-    else
-      gfx_new_identifier = setup.graphics_set;
+  if (type == ARTWORK_TYPE_GRAPHICS)
+    printf("::: 0: '%s' ['%s', '%s'] ['%s' ('%s')]\n",
+          artwork_new_identifier,
+          ARTWORK_CURRENT_IDENTIFIER(artwork, type),
+          artwork_current_identifier,
+          leveldir_current->graphics_set,
+          leveldir_current->identifier);
 #endif
 
-#if 0
-    if (getTreeInfoFromIdentifier(artwork.snd_first, identifier_new) == NULL)
-      snd_new_identifier = SOUNDS_SUBDIR;
-    else if (getTreeInfoFromIdentifier(artwork.snd_first, identifier_old) !=
-            getTreeInfoFromIdentifier(artwork.snd_first, identifier_new))
-      snd_new_identifier = identifier_new;
-#else
-    if (getTreeInfoFromIdentifier(artwork.snd_first, identifier_new))
-      snd_new_identifier = identifier_new;
-    else
-      snd_new_identifier = setup.sounds_set;
-#endif
+  /* ---------- reload if level set and also artwork set has changed ------- */
+  if (leveldir_current_identifier[type] != leveldir_identifier &&
+      (last_has_level_artwork_set[type] || has_level_artwork_set))
+    artwork_new_identifier = artwork_current_identifier;
 
-#if 0
-    if (getTreeInfoFromIdentifier(artwork.mus_first, identifier_new) == NULL)
-      mus_new_identifier = MUSIC_SUBDIR;
-    else if (getTreeInfoFromIdentifier(artwork.mus_first, identifier_new) !=
-            getTreeInfoFromIdentifier(artwork.mus_first, identifier_new))
-      mus_new_identifier = identifier_new;
-#else
-    if (getTreeInfoFromIdentifier(artwork.mus_first, identifier_new))
-      mus_new_identifier = identifier_new;
-    else
-      mus_new_identifier = setup.music_set;
-#endif
+  leveldir_current_identifier[type] = leveldir_identifier;
+  last_has_level_artwork_set[type] = has_level_artwork_set;
 
 #if 0
-    printf("::: 2: ['%s'] '%s', '%s'\n",
-          gfx_new_identifier, identifier_old, identifier_new);
+  if (type == ARTWORK_TYPE_GRAPHICS)
+    printf("::: 1: '%s'\n", artwork_new_identifier);
 #endif
 
-#if 0
-    leveldir_current_identifier = leveldir_current->identifier;
-#endif
-  }
+  /* ---------- reload if "override artwork" setting has changed ----------- */
+  if (last_override_level_artwork[type] != setup_override_artwork)
+    artwork_new_identifier = artwork_current_identifier;
 
-  /* custom level artwork configured in level series configuration file
-     always overrides custom level artwork stored in level series directory
-     and (level independent) custom artwork configured in setup menu */
-  if (leveldir_current->graphics_set != NULL)
-    gfx_new_identifier = leveldir_current->graphics_set;
-  if (leveldir_current->sounds_set != NULL)
-    snd_new_identifier = leveldir_current->sounds_set;
-  if (leveldir_current->music_set != NULL)
-    mus_new_identifier = leveldir_current->music_set;
+  last_override_level_artwork[type] = setup_override_artwork;
 
-  if (leveldir_current_identifier != leveldir_current->identifier)
-  {
-    if (last_own_level_graphics_set || leveldir_current->graphics_set != NULL)
-      level_graphics_set_changed = TRUE;
+#if 0
+  if (type == ARTWORK_TYPE_GRAPHICS)
+    printf("::: 2: '%s'\n", artwork_new_identifier);
+#endif
 
-    if (last_own_level_sounds_set || leveldir_current->sounds_set != NULL)
-      level_sounds_set_changed = TRUE;
+  /* ---------- reload if current artwork identifier has changed ----------- */
+  if (strcmp(ARTWORK_CURRENT_IDENTIFIER(artwork, type),
+            artwork_current_identifier) != 0)
+    artwork_new_identifier = artwork_current_identifier;
 
-    if (last_own_level_music_set || leveldir_current->music_set != NULL)
-      level_music_set_changed = TRUE;
+  *(&(ARTWORK_CURRENT_IDENTIFIER(artwork, type))) = artwork_current_identifier;
 
-    last_own_level_graphics_set = (leveldir_current->graphics_set != NULL);
-    last_own_level_sounds_set = (leveldir_current->sounds_set != NULL);
-    last_own_level_music_set = (leveldir_current->music_set != NULL);
-  }
-
-#if 1
-  leveldir_current_identifier = leveldir_current->identifier;
+#if 0
+  if (type == ARTWORK_TYPE_GRAPHICS)
+    printf("::: 3: '%s'\n", artwork_new_identifier);
 #endif
 
-  if (setup.override_level_graphics)
-    gfx_new_identifier = artwork.gfx_current->identifier;
-  if (setup.override_level_sounds)
-    snd_new_identifier = artwork.snd_current->identifier;
-  if (setup.override_level_music)
-    mus_new_identifier = artwork.mus_current->identifier;
+  /* ---------- do not reload directly after starting ---------------------- */
+  if (!initialized[type])
+    artwork_new_identifier = NULL;
 
+  initialized[type] = TRUE;
 
 #if 0
-  printf("CHECKING OLD/NEW GFX:\n  OLD: '%s'\n  NEW: '%s' ['%s', '%s'] [%d]\n",
-        artwork.gfx_current_identifier, gfx_new_identifier,
-        artwork.gfx_current->identifier, leveldir_current->graphics_set,
-        level_graphics_set_changed);
+  if (type == ARTWORK_TYPE_GRAPHICS)
+    printf("::: 4: '%s'\n", artwork_new_identifier);
 #endif
 
-  if (strcmp(artwork.gfx_current_identifier, gfx_new_identifier) != 0 ||
-      last_override_level_graphics != setup.override_level_graphics ||
-      level_graphics_set_changed)
-  {
 #if 0
-    printf("RELOADING GRAPHICS '%s' -> '%s' ['%s']\n",
-          artwork.gfx_current_identifier,
-          gfx_new_identifier,
-          artwork.gfx_current->identifier);
+  if (type == ARTWORK_TYPE_GRAPHICS)
+    printf("CHECKING OLD/NEW GFX:\n- OLD: %s\n- NEW: %s ['%s', '%s'] ['%s']\n",
+          artwork.gfx_current_identifier, artwork_current_identifier,
+          artwork.gfx_current->identifier, leveldir_current->graphics_set,
+          artwork_new_identifier);
 #endif
 
-#if 0
-    artwork.gfx_current =
-      getTreeInfoFromIdentifier(artwork.gfx_first, gfx_new_identifier);
-#endif
-#if 0
-    artwork.gfx_current_identifier = gfx_new_identifier;
-#endif
+  return artwork_new_identifier;
+}
 
+void ReloadCustomArtwork()
+{
+  char *gfx_new_identifier = getNewArtworkIdentifier(ARTWORK_TYPE_GRAPHICS);
+  char *snd_new_identifier = getNewArtworkIdentifier(ARTWORK_TYPE_SOUNDS);
+  char *mus_new_identifier = getNewArtworkIdentifier(ARTWORK_TYPE_MUSIC);
+  boolean redraw_screen = FALSE;
+
+  if (gfx_new_identifier != NULL)
+  {
 #if 0
-    setLevelArtworkDir(artwork.gfx_first);
+    printf("RELOADING GRAPHICS '%s' -> '%s' ['%s', '%s']\n",
+          artwork.gfx_current_identifier,
+          gfx_new_identifier,
+          artwork.gfx_current->identifier,
+          leveldir_current->graphics_set);
 #endif
 
     ClearRectangle(window, 0, 0, WIN_XSIZE, WIN_YSIZE);
@@ -3300,82 +3521,30 @@ void ReloadCustomArtwork()
     InitImages();
 
 #if 0
-    printf("::: %d\n", menu.list_size[GAME_MODE_LEVELS]);
+    printf("... '%s'\n",
+          leveldir_current->graphics_set);
 #endif
 
     FreeTileClipmasks();
     InitTileClipmasks();
-#if 0
-    artwork.gfx_current =
-      getTreeInfoFromIdentifier(artwork.gfx_first, gfx_new_identifier);
-#endif
-#if 0
-    printf("::: '%s', %lx\n", gfx_new_identifier, artwork.gfx_current);
-#endif
-
-#if 0
-    artwork.gfx_current_identifier = artwork.gfx_current->identifier;
-#endif
-    artwork.gfx_current_identifier = gfx_new_identifier;
-    last_override_level_graphics = setup.override_level_graphics;
-
-#if 0
-    printf("DONE RELOADING GFX: '%s' ['%s']\n",
-          artwork.gfx_current_identifier, artwork.gfx_current->identifier);
-#endif
 
     redraw_screen = TRUE;
   }
 
-  if (strcmp(artwork.snd_current_identifier, snd_new_identifier) != 0 ||
-      last_override_level_sounds != setup.override_level_sounds ||
-      level_sounds_set_changed)
+  if (snd_new_identifier != NULL)
   {
-#if 0
-    printf("RELOADING SOUNDS '%s' -> '%s' ('%s')\n",
-          artwork.snd_current_identifier,
-          artwork.snd_current->identifier,
-          snd_new_identifier);
-#endif
-
-    /* set artwork path to send it to the sound server process */
-    setLevelArtworkDir(artwork.snd_first);
-
     ClearRectangle(window, 0, 0, WIN_XSIZE, WIN_YSIZE);
 
-    InitReloadCustomSounds(snd_new_identifier);
-    ReinitializeSounds();
-
-#if 0
-    artwork.snd_current =
-      getTreeInfoFromIdentifier(artwork.snd_first, setup.sounds_set);
-    artwork.snd_current_identifier = artwork.snd_current->identifier;
-#endif
-    artwork.snd_current_identifier = snd_new_identifier;
-    last_override_level_sounds = setup.override_level_sounds;
+    InitSound(snd_new_identifier);
 
     redraw_screen = TRUE;
   }
 
-  if (strcmp(artwork.mus_current_identifier, mus_new_identifier) != 0 ||
-      last_override_level_music != setup.override_level_music ||
-      level_music_set_changed)
+  if (mus_new_identifier != NULL)
   {
-    /* set artwork path to send it to the sound server process */
-    setLevelArtworkDir(artwork.mus_first);
-
     ClearRectangle(window, 0, 0, WIN_XSIZE, WIN_YSIZE);
 
-    InitReloadCustomMusic(mus_new_identifier);
-    ReinitializeMusic();
-
-#if 0
-    artwork.mus_current =
-      getTreeInfoFromIdentifier(artwork.mus_first, setup.music_set);
-    artwork.mus_current_identifier = artwork.mus_current->identifier;
-#endif
-    artwork.mus_current_identifier = mus_new_identifier;
-    last_override_level_music = setup.override_level_music;
+    InitMusic(mus_new_identifier);
 
     redraw_screen = TRUE;
   }
@@ -3439,6 +3608,7 @@ void OpenAll()
   InitEventFilter(FilterMouseMotionEvents);
 
   InitElementPropertiesStatic();
+  InitElementPropertiesEngine(GAME_VERSION_ACTUAL);
 
   InitGfx();
 
@@ -3446,8 +3616,8 @@ void OpenAll()
   InitLevelArtworkInfo();
 
   InitImages();                        /* needs to know current level directory */
-  InitSound();                 /* needs to know current level directory */
-  InitMusic();                 /* needs to know current level directory */
+  InitSound(NULL);             /* needs to know current level directory */
+  InitMusic(NULL);             /* needs to know current level directory */
 
   InitGfxBackground();