rnd-20040928-1-src
[rocksndiamonds.git] / src / init.c
index b19f825bf6021b0738285dc70dd32c3d6e5dd4cb..f0f528ce1ca3093e12bdf3ca0538f21d616357f2 100644 (file)
@@ -239,6 +239,11 @@ void InitGadgets()
   gadgets_initialized = TRUE;
 }
 
+inline void InitElementSmallImagesScaledUp(int graphic)
+{
+  CreateImageWithSmallImages(graphic, graphic_info[graphic].scale_up_factor);
+}
+
 void InitElementSmallImages()
 {
   struct PropertyMapping *property_mapping = getImageListPropertyMapping();
@@ -247,17 +252,32 @@ void InitElementSmallImages()
 
   /* initialize normal images from static configuration */
   for (i = 0; element_to_graphic[i].element > -1; i++)
-    CreateImageWithSmallImages(element_to_graphic[i].graphic);
+    InitElementSmallImagesScaledUp(element_to_graphic[i].graphic);
 
   /* initialize special images from static configuration */
   for (i = 0; element_to_special_graphic[i].element > -1; i++)
-    CreateImageWithSmallImages(element_to_special_graphic[i].graphic);
+    InitElementSmallImagesScaledUp(element_to_special_graphic[i].graphic);
 
   /* initialize images from dynamic configuration */
   for (i = 0; i < num_property_mappings; i++)
     if (property_mapping[i].artwork_index < MAX_NUM_ELEMENTS)
-      CreateImageWithSmallImages(property_mapping[i].artwork_index);
+      InitElementSmallImagesScaledUp(property_mapping[i].artwork_index);
+
+#if 1
+  /* !!! FIX THIS (CHANGE TO USING NORMAL ELEMENT GRAPHIC DEFINITIONS) !!! */
+  for (i = IMG_EMC_OBJECT; i <= IMG_EMC_SPRITE; i++)
+    InitElementSmallImagesScaledUp(i);
+#endif
+}
+
+#if 1
+/* !!! FIX THIS (CHANGE TO USING NORMAL ELEMENT GRAPHIC DEFINITIONS) !!! */
+void SetBitmaps_EM(Bitmap **em_bitmap)
+{
+  em_bitmap[0] = graphic_info[IMG_EMC_OBJECT].bitmap;
+  em_bitmap[1] = graphic_info[IMG_EMC_SPRITE].bitmap;
 }
+#endif
 
 static int getFontBitmapID(int font_nr)
 {
@@ -560,6 +580,11 @@ void InitElementGraphicInfo()
     }
   }
 
+#if 1
+  /* set hardcoded definitions for some runtime elements without graphic */
+  element_info[EL_AMOEBA_TO_DIAMOND].graphic[ACTION_DEFAULT] = IMG_AMOEBA_DEAD;
+#endif
+
 #if 1
   /* now set all undefined/invalid graphics to -1 to set to default after it */
   for (i = 0; i < MAX_NUM_ELEMENTS; i++)
@@ -646,6 +671,7 @@ void InitElementGraphicInfo()
        default_action_crumbled = element_info[EL_SB_DEFAULT].crumbled[act];
 
 #if 1
+      /* !!! needed because EL_EMPTY_SPACE treated as IS_SP_ELEMENT !!! */
       /* !!! make this better !!! */
       if (i == EL_EMPTY_SPACE)
       {
@@ -840,6 +866,7 @@ static void set_graphic_parameters(int graphic, char **parameter_raw)
   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 */
+  graphic_info[graphic].scale_up_factor = 1;   /* default: no scaling up */
   graphic_info[graphic].anim_delay_fixed = 0;
   graphic_info[graphic].anim_delay_random = 0;
   graphic_info[graphic].post_delay_fixed = 0;
@@ -863,10 +890,21 @@ static void set_graphic_parameters(int graphic, char **parameter_raw)
   if (parameter[GFX_ARG_HEIGHT] != ARG_UNDEFINED_VALUE)
     graphic_info[graphic].height = parameter[GFX_ARG_HEIGHT];
 
+  /* optional zoom factor for scaling up the image to a larger size */
+  if (parameter[GFX_ARG_SCALE_UP_FACTOR] != ARG_UNDEFINED_VALUE)
+    graphic_info[graphic].scale_up_factor = parameter[GFX_ARG_SCALE_UP_FACTOR];
+  if (graphic_info[graphic].scale_up_factor < 1)
+    graphic_info[graphic].scale_up_factor = 1;         /* no scaling */
+
   if (src_bitmap)
   {
-    anim_frames_per_row = src_bitmap->width  / graphic_info[graphic].width;
-    anim_frames_per_col = src_bitmap->height / graphic_info[graphic].height;
+    /* bitmap is not scaled at this stage, so calculate final size */
+    int scale_up_factor = graphic_info[graphic].scale_up_factor;
+    int src_bitmap_width  = src_bitmap->width  * scale_up_factor;
+    int src_bitmap_height = src_bitmap->height * scale_up_factor;
+
+    anim_frames_per_row = src_bitmap_width  / graphic_info[graphic].width;
+    anim_frames_per_col = src_bitmap_height / graphic_info[graphic].height;
   }
 
   /* correct x or y offset dependent of vertical or horizontal frame order */
@@ -1011,6 +1049,7 @@ static void InitGraphicInfo()
     Bitmap *src_bitmap;
     int src_x, src_y;
     int first_frame, last_frame;
+    int scale_up_factor, src_bitmap_width, src_bitmap_height;
 
 #if 0
     printf("::: image: '%s' [%d]\n", image->token, i);
@@ -1029,11 +1068,16 @@ static void InitGraphicInfo()
     if (graphic_info[i].bitmap == NULL)
       continue;                /* skip check for optional images that are undefined */
 
+    /* bitmap is not scaled at this stage, so calculate final size */
+    scale_up_factor = graphic_info[i].scale_up_factor;
+    src_bitmap_width  = graphic_info[i].bitmap->width  * scale_up_factor;
+    src_bitmap_height = graphic_info[i].bitmap->height * scale_up_factor;
+
     first_frame = 0;
     getGraphicSource(i, first_frame, &src_bitmap, &src_x, &src_y);
     if (src_x < 0 || src_y < 0 ||
-       src_x + TILEX > src_bitmap->width ||
-       src_y + TILEY > src_bitmap->height)
+       src_x + TILEX > src_bitmap_width ||
+       src_y + TILEY > src_bitmap_height)
     {
       Error(ERR_RETURN_LINE, "-");
       Error(ERR_RETURN, "warning: error found in config file:");
@@ -1048,6 +1092,10 @@ static void InitGraphicInfo()
            src_x, src_y);
       Error(ERR_RETURN, "custom graphic rejected for this element/action");
 
+#if 1
+      Error(ERR_RETURN, "scale_up_factor == %d", scale_up_factor);
+#endif
+
       if (i == fallback_graphic)
        Error(ERR_EXIT, "fatal error: no fallback graphic available");
 
@@ -1061,8 +1109,8 @@ static void InitGraphicInfo()
     last_frame = graphic_info[i].anim_frames - 1;
     getGraphicSource(i, last_frame, &src_bitmap, &src_x, &src_y);
     if (src_x < 0 || src_y < 0 ||
-       src_x + TILEX > src_bitmap->width ||
-       src_y + TILEY > src_bitmap->height)
+       src_x + TILEX > src_bitmap_width ||
+       src_y + TILEY > src_bitmap_height)
     {
       Error(ERR_RETURN_LINE, "-");
       Error(ERR_RETURN, "warning: error found in config file:");
@@ -1212,6 +1260,13 @@ static void InitElementSoundInfo()
        default_action_sound = element_info[i].sound[ACTION_DEFAULT];
 #endif
 
+#if 1
+      /* !!! needed because EL_EMPTY_SPACE treated as IS_SP_ELEMENT !!! */
+      /* !!! make this better !!! */
+      if (i == EL_EMPTY_SPACE)
+       default_action_sound = element_info[EL_DEFAULT].sound[act];
+#endif
+
       /* no sound for this specific action -- use default action sound */
       if (element_info[i].sound[act] == -1)
        element_info[i].sound[act] = default_action_sound;
@@ -1266,6 +1321,12 @@ static void set_sound_parameters(int sound, char **parameter_raw)
   /* explicit loop mode setting in configuration overrides default value */
   if (parameter[SND_ARG_MODE_LOOP] != ARG_UNDEFINED_VALUE)
     sound_info[sound].loop = parameter[SND_ARG_MODE_LOOP];
+
+  /* sound volume to change the original volume when loading the sound file */
+  sound_info[sound].volume = parameter[SND_ARG_VOLUME];
+
+  /* sound priority to give certain sounds a higher or lower priority */
+  sound_info[sound].volume = parameter[SND_ARG_VOLUME];
 }
 
 static void InitSoundInfo()
@@ -1546,7 +1607,7 @@ static void ReinitializeGraphics()
   InitElementGraphicInfo();            /* element game graphic mapping */
   InitElementSpecialGraphicInfo();     /* element special graphic mapping */
 
-  InitElementSmallImages();            /* create editor and preview images */
+  InitElementSmallImages();            /* scale images to all needed sizes */
   InitFontGraphicInfo();               /* initialize text drawing functions */
 
   SetMainBackgroundImage(IMG_BACKGROUND);
@@ -2071,14 +2132,14 @@ void InitElementPropertiesStatic()
     -1
   };
 
-  static int ep_can_explode_by_fire[] =
+  static int ep_explodes_by_fire[] =
   {
-    /* same elements as in 'ep_can_explode_impact' */
+    /* same elements as in 'ep_explodes_impact' */
     EL_BOMB,
     EL_SP_DISK_ORANGE,
     EL_DX_SUPABOMB,
 
-    /* same elements as in 'ep_can_explode_smashed' */
+    /* same elements as in 'ep_explodes_smashed' */
     EL_SATELLITE,
     EL_PIG,
     EL_DRAGON,
@@ -2107,9 +2168,9 @@ void InitElementPropertiesStatic()
     -1
   };
 
-  static int ep_can_explode_smashed[] =
+  static int ep_explodes_smashed[] =
   {
-    /* same elements as in 'ep_can_explode_impact' */
+    /* same elements as in 'ep_explodes_impact' */
     EL_BOMB,
     EL_SP_DISK_ORANGE,
     EL_DX_SUPABOMB,
@@ -2122,7 +2183,7 @@ void InitElementPropertiesStatic()
     -1
   };
 
-  static int ep_can_explode_impact[] =
+  static int ep_explodes_impact[] =
   {
     EL_BOMB,
     EL_SP_DISK_ORANGE,
@@ -2201,6 +2262,14 @@ void InitElementPropertiesStatic()
     EL_SP_GRAVITY_PORT_RIGHT,
     EL_SP_GRAVITY_PORT_UP,
     EL_SP_GRAVITY_PORT_DOWN,
+    EL_SP_GRAVITY_ON_PORT_LEFT,
+    EL_SP_GRAVITY_ON_PORT_RIGHT,
+    EL_SP_GRAVITY_ON_PORT_UP,
+    EL_SP_GRAVITY_ON_PORT_DOWN,
+    EL_SP_GRAVITY_OFF_PORT_LEFT,
+    EL_SP_GRAVITY_OFF_PORT_RIGHT,
+    EL_SP_GRAVITY_OFF_PORT_UP,
+    EL_SP_GRAVITY_OFF_PORT_DOWN,
     -1
   };
 
@@ -2214,7 +2283,7 @@ void InitElementPropertiesStatic()
     -1
   };
 
-  static int ep_can_explode_1x1[] =
+  static int ep_explodes_1x1_old[] =
   {
     -1
   };
@@ -2238,13 +2307,27 @@ void InitElementPropertiesStatic()
     -1
   };
 
-  static int ep_can_explode_cross[] =
+  static int ep_explodes_cross_old[] =
   {
     -1
   };
 
   static int ep_protected[] =
   {
+    /* same elements as in 'ep_walkable_inside' */
+    EL_TUBE_ANY,
+    EL_TUBE_VERTICAL,
+    EL_TUBE_HORIZONTAL,
+    EL_TUBE_VERTICAL_LEFT,
+    EL_TUBE_VERTICAL_RIGHT,
+    EL_TUBE_HORIZONTAL_UP,
+    EL_TUBE_HORIZONTAL_DOWN,
+    EL_TUBE_LEFT_UP,
+    EL_TUBE_LEFT_DOWN,
+    EL_TUBE_RIGHT_UP,
+    EL_TUBE_RIGHT_DOWN,
+
+    /* same elements as in 'ep_passable_over' */
     EL_EM_GATE_1,
     EL_EM_GATE_2,
     EL_EM_GATE_3,
@@ -2255,6 +2338,27 @@ void InitElementPropertiesStatic()
     EL_EM_GATE_4_GRAY,
     EL_SWITCHGATE_OPEN,
     EL_TIMEGATE_OPEN,
+
+    /* same elements as in 'ep_passable_inside' */
+    EL_SP_PORT_LEFT,
+    EL_SP_PORT_RIGHT,
+    EL_SP_PORT_UP,
+    EL_SP_PORT_DOWN,
+    EL_SP_PORT_HORIZONTAL,
+    EL_SP_PORT_VERTICAL,
+    EL_SP_PORT_ANY,
+    EL_SP_GRAVITY_PORT_LEFT,
+    EL_SP_GRAVITY_PORT_RIGHT,
+    EL_SP_GRAVITY_PORT_UP,
+    EL_SP_GRAVITY_PORT_DOWN,
+    EL_SP_GRAVITY_ON_PORT_LEFT,
+    EL_SP_GRAVITY_ON_PORT_RIGHT,
+    EL_SP_GRAVITY_ON_PORT_UP,
+    EL_SP_GRAVITY_ON_PORT_DOWN,
+    EL_SP_GRAVITY_OFF_PORT_LEFT,
+    EL_SP_GRAVITY_OFF_PORT_RIGHT,
+    EL_SP_GRAVITY_OFF_PORT_UP,
+    EL_SP_GRAVITY_OFF_PORT_DOWN,
     -1
   };
 
@@ -2263,6 +2367,71 @@ void InitElementPropertiesStatic()
     -1
   };
 
+  static int ep_can_explode[] =
+  {
+    /* same elements as in 'ep_explodes_impact' */
+    EL_BOMB,
+    EL_SP_DISK_ORANGE,
+    EL_DX_SUPABOMB,
+
+    /* same elements as in 'ep_explodes_smashed' */
+    EL_SATELLITE,
+    EL_PIG,
+    EL_DRAGON,
+    EL_MOLE,
+
+    /* elements that can explode by explosion or by dragonfire */
+    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,
+
+    /* elements that can explode only by explosion */
+    EL_BLACK_ORB,
+    -1
+  };
+
+  static int ep_gravity_reachable[] =
+  {
+    EL_SAND,
+    EL_SP_BASE,
+    EL_TRAP,
+    EL_INVISIBLE_SAND,
+    EL_INVISIBLE_SAND_ACTIVE,
+    EL_SP_PORT_LEFT,
+    EL_SP_PORT_RIGHT,
+    EL_SP_PORT_UP,
+    EL_SP_PORT_DOWN,
+    EL_SP_PORT_HORIZONTAL,
+    EL_SP_PORT_VERTICAL,
+    EL_SP_PORT_ANY,
+    EL_SP_GRAVITY_PORT_LEFT,
+    EL_SP_GRAVITY_PORT_RIGHT,
+    EL_SP_GRAVITY_PORT_UP,
+    EL_SP_GRAVITY_PORT_DOWN,
+    EL_SP_GRAVITY_ON_PORT_LEFT,
+    EL_SP_GRAVITY_ON_PORT_RIGHT,
+    EL_SP_GRAVITY_ON_PORT_UP,
+    EL_SP_GRAVITY_ON_PORT_DOWN,
+    EL_SP_GRAVITY_OFF_PORT_LEFT,
+    EL_SP_GRAVITY_OFF_PORT_RIGHT,
+    EL_SP_GRAVITY_OFF_PORT_UP,
+    EL_SP_GRAVITY_OFF_PORT_DOWN,
+    -1
+  };
+
   static int ep_player[] =
   {
     EL_PLAYER_1,
@@ -2357,6 +2526,7 @@ void InitElementPropertiesStatic()
     /* should always be valid */
     EL_EMPTY,
 
+    /* standard classic Supaplex elements */
     EL_SP_EMPTY,
     EL_SP_ZONK,
     EL_SP_BASE,
@@ -2398,11 +2568,24 @@ void InitElementPropertiesStatic()
     EL_SP_HARDWARE_BASE_6,
     EL_SP_CHIP_TOP,
     EL_SP_CHIP_BOTTOM,
+
     /* additional elements that appeared in newer Supaplex levels */
     EL_INVISIBLE_WALL,
-    /* more than one murphy in a level results in an inactive clone */
+
+    /* additional gravity port elements (not switching, but setting gravity) */
+    EL_SP_GRAVITY_ON_PORT_LEFT,
+    EL_SP_GRAVITY_ON_PORT_RIGHT,
+    EL_SP_GRAVITY_ON_PORT_UP,
+    EL_SP_GRAVITY_ON_PORT_DOWN,
+    EL_SP_GRAVITY_OFF_PORT_LEFT,
+    EL_SP_GRAVITY_OFF_PORT_RIGHT,
+    EL_SP_GRAVITY_OFF_PORT_UP,
+    EL_SP_GRAVITY_OFF_PORT_DOWN,
+
+    /* more than one Murphy in a level results in an inactive clone */
     EL_SP_MURPHY_CLONE,
-    /* runtime elements*/
+
+    /* runtime Supaplex elements */
     EL_SP_DISK_RED_ACTIVE,
     EL_SP_TERMINAL_ACTIVE,
     EL_SP_BUGGY_BASE_ACTIVATING,
@@ -2428,14 +2611,6 @@ void InitElementPropertiesStatic()
     -1
   };
 
-  static int ep_sp_buggy_base[] =
-  {
-    EL_SP_BUGGY_BASE,
-    EL_SP_BUGGY_BASE_ACTIVATING,
-    EL_SP_BUGGY_BASE_ACTIVE,
-    -1
-  };
-
   static int ep_gem[] =
   {
     EL_BD_DIAMOND,
@@ -2985,6 +3160,14 @@ void InitElementPropertiesStatic()
     EL_SP_HARDWARE_BASE_4,
     EL_SP_HARDWARE_BASE_5,
     EL_SP_HARDWARE_BASE_6,
+    EL_SP_GRAVITY_ON_PORT_LEFT,
+    EL_SP_GRAVITY_ON_PORT_RIGHT,
+    EL_SP_GRAVITY_ON_PORT_UP,
+    EL_SP_GRAVITY_ON_PORT_DOWN,
+    EL_SP_GRAVITY_OFF_PORT_LEFT,
+    EL_SP_GRAVITY_OFF_PORT_RIGHT,
+    EL_SP_GRAVITY_OFF_PORT_UP,
+    EL_SP_GRAVITY_OFF_PORT_DOWN,
     EL_CONVEYOR_BELT_1_SWITCH_LEFT,
     EL_CONVEYOR_BELT_1_SWITCH_MIDDLE,
     EL_CONVEYOR_BELT_1_SWITCH_RIGHT,
@@ -3058,9 +3241,9 @@ void InitElementPropertiesStatic()
     { 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_explodes_by_fire,     EP_EXPLODES_BY_FIRE     },
+    { ep_explodes_smashed,     EP_EXPLODES_SMASHED     },
+    { ep_explodes_impact,      EP_EXPLODES_IMPACT      },
     { ep_walkable_over,                EP_WALKABLE_OVER        },
     { ep_walkable_inside,      EP_WALKABLE_INSIDE      },
     { ep_walkable_under,       EP_WALKABLE_UNDER       },
@@ -3068,11 +3251,13 @@ void InitElementPropertiesStatic()
     { 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_explodes_1x1_old,     EP_EXPLODES_1X1_OLD     },
     { ep_pushable,             EP_PUSHABLE             },
-    { ep_can_explode_cross,    EP_CAN_EXPLODE_CROSS    },
+    { ep_explodes_cross_old,   EP_EXPLODES_CROSS_OLD   },
     { ep_protected,            EP_PROTECTED            },
     { ep_throwable,            EP_THROWABLE            },
+    { ep_can_explode,          EP_CAN_EXPLODE          },
+    { ep_gravity_reachable,    EP_GRAVITY_REACHABLE    },
 
     { ep_player,               EP_PLAYER               },
     { ep_can_pass_magic_wall,  EP_CAN_PASS_MAGIC_WALL  },
@@ -3080,7 +3265,6 @@ void InitElementPropertiesStatic()
     { ep_bd_element,           EP_BD_ELEMENT           },
     { ep_sp_element,           EP_SP_ELEMENT           },
     { ep_sb_element,           EP_SB_ELEMENT           },
-    { ep_sp_buggy_base,                EP_SP_BUGGY_BASE        },
     { ep_gem,                  EP_GEM                  },
     { ep_food_dark_yamyam,     EP_FOOD_DARK_YAMYAM     },
     { ep_food_penguin,         EP_FOOD_PENGUIN         },
@@ -3184,7 +3368,7 @@ void InitElementPropertiesEngine(int engine_version)
     EP_DONT_TOUCH,
     EP_DONT_RUN_INTO,
     EP_GEM,
-    EP_CAN_EXPLODE_BY_FIRE,
+    EP_EXPLODES_BY_FIRE,
     EP_PUSHABLE,
     EP_PLAYER,
     EP_HAS_CONTENT,
@@ -3304,7 +3488,7 @@ void InitElementPropertiesEngine(int engine_version)
                                             !IS_DIGGABLE(i) &&
                                             !IS_COLLECTIBLE(i)));
 
-#if 1
+#if 0
     /* ---------- PROTECTED ------------------------------------------------ */
     if (IS_ACCESSIBLE_INSIDE(i))
       SET_PROPERTY(i, EP_PROTECTED, TRUE);
@@ -3361,15 +3545,36 @@ void InitElementPropertiesEngine(int engine_version)
                                   CAN_SMASH_ENEMIES(i) ||
                                   CAN_SMASH_EVERYTHING(i)));
 
+#if 0
     /* ---------- CAN_EXPLODE ---------------------------------------------- */
     SET_PROPERTY(i, EP_CAN_EXPLODE, (CAN_EXPLODE_BY_FIRE(i) ||
                                     CAN_EXPLODE_SMASHED(i) ||
                                     CAN_EXPLODE_IMPACT(i)));
+#endif
 
+#if 0
     /* ---------- CAN_EXPLODE_3X3 ------------------------------------------ */
+#if 0
+    SET_PROPERTY(i, EP_CAN_EXPLODE_3X3, (!CAN_EXPLODE_1X1(i) &&
+                                        !CAN_EXPLODE_CROSS(i)));
+#else
     SET_PROPERTY(i, EP_CAN_EXPLODE_3X3, (CAN_EXPLODE(i) &&
                                         !CAN_EXPLODE_1X1(i) &&
                                         !CAN_EXPLODE_CROSS(i)));
+#endif
+#endif
+
+    /* ---------- CAN_EXPLODE_BY_FIRE -------------------------------------- */
+    SET_PROPERTY(i, EP_CAN_EXPLODE_BY_FIRE, (CAN_EXPLODE(i) &&
+                                            EXPLODES_BY_FIRE(i)));
+
+    /* ---------- CAN_EXPLODE_SMASHED -------------------------------------- */
+    SET_PROPERTY(i, EP_CAN_EXPLODE_SMASHED, (CAN_EXPLODE(i) &&
+                                            EXPLODES_SMASHED(i)));
+
+    /* ---------- CAN_EXPLODE_IMPACT --------------------------------------- */
+    SET_PROPERTY(i, EP_CAN_EXPLODE_IMPACT, (CAN_EXPLODE(i) &&
+                                           EXPLODES_IMPACT(i)));
 
     /* ---------- CAN_EXPLODE_BY_DRAGONFIRE -------------------------------- */
     SET_PROPERTY(i, EP_CAN_EXPLODE_BY_DRAGONFIRE, CAN_EXPLODE_BY_FIRE(i));
@@ -3387,10 +3592,6 @@ void InitElementPropertiesEngine(int engine_version)
     SET_PROPERTY(i, EP_MAYBE_DONT_COLLIDE_WITH, (i == EL_SP_SNIKSNAK ||
                                                 i == EL_SP_ELECTRON));
 
-    /* ---------- DIGGABLE_WITH_GRAVITY ------------------------------------ */
-    SET_PROPERTY(i, EP_DIGGABLE_WITH_GRAVITY, (IS_DIGGABLE(i) &&
-                                              !IS_SP_BUGGY_BASE(i)));
-
     /* ---------- CAN_MOVE_INTO_ACID --------------------------------------- */
     if (COULD_MOVE_INTO_ACID(i) && !IS_CUSTOM_ELEMENT(i))
       SET_PROPERTY(i, EP_CAN_MOVE_INTO_ACID,
@@ -3405,15 +3606,6 @@ void InitElementPropertiesEngine(int engine_version)
     SET_PROPERTY(i, EP_SP_PORT, (IS_SP_ELEMENT(i) &&
                                 IS_PASSABLE_INSIDE(i)));
 
-#if 0
-    if (i == EL_CUSTOM_START + 253)
-      printf("::: %d, %d, %d -> %d\n",
-            CAN_EXPLODE_1X1(i),
-            CAN_EXPLODE_3X3(i),
-            CAN_EXPLODE_CROSS(i),
-            CAN_EXPLODE(i));
-#endif
-
     /* ---------- CAN_CHANGE ----------------------------------------------- */
     SET_PROPERTY(i, EP_CAN_CHANGE, FALSE);     /* default: cannot change */
     for (j = 0; j < element_info[i].num_change_pages; j++)
@@ -3524,7 +3716,21 @@ void InitElementPropertiesEngine(int engine_version)
 
 static void InitGlobal()
 {
+  int i;
+
+  for (i = 0; i < MAX_NUM_ELEMENTS + 1; i++)
+  {
+    /* check if element_name_info entry defined for each element in "main.h" */
+    if (i < MAX_NUM_ELEMENTS && element_name_info[i].token_name == NULL)
+      Error(ERR_EXIT, "undefined 'element_name_info' entry for element %d", i);
+
+    element_info[i].token_name = element_name_info[i].token_name;
+    element_info[i].class_name = element_name_info[i].class_name;
+    element_info[i].editor_description=element_name_info[i].editor_description;
+  }
+
   global.autoplay_leveldir = NULL;
+  global.convert_leveldir = NULL;
 
   global.frames_per_second = 0;
   global.fps_slowdown = FALSE;
@@ -3660,6 +3866,20 @@ void Execute_Command(char *command)
       global.autoplay_level_nr = atoi(str_ptr);        /* get level_nr value */
     }
   }
+  else if (strncmp(command, "convert ", 8) == 0)
+  {
+    char *str_copy = getStringCopy(&command[8]);
+    char *str_ptr = strchr(str_copy, ' ');
+
+    global.convert_leveldir = str_copy;
+    global.convert_level_nr = -1;
+
+    if (str_ptr != NULL)
+    {
+      *str_ptr++ = '\0';                       /* terminate leveldir string */
+      global.convert_level_nr = atoi(str_ptr); /* get level_nr value */
+    }
+  }
   else
   {
     Error(ERR_EXIT_HELP, "unrecognized command '%s'", command);
@@ -4001,14 +4221,14 @@ static void InitMusic(char *identifier)
 
 void InitNetworkServer()
 {
-#if defined(PLATFORM_UNIX)
+#if defined(NETWORK_AVALIABLE)
   int nr_wanted;
 #endif
 
   if (!options.network)
     return;
 
-#if defined(PLATFORM_UNIX)
+#if defined(NETWORK_AVALIABLE)
   nr_wanted = Request("Choose player", REQ_PLAYER | REQ_STAY_CLOSED);
 
   if (!ConnectToServer(options.server_host, options.server_port))
@@ -4265,9 +4485,18 @@ void OpenAll()
     AutoPlayTape();
     return;
   }
+  else if (global.convert_leveldir)
+  {
+    ConvertLevels();
+    return;
+  }
 
   game_status = GAME_MODE_MAIN;
 
+#if 1
+  em_open_all();
+#endif
+
   DrawMainMenu();
 
   InitNetworkServer();
@@ -4280,9 +4509,18 @@ void CloseAllAndExit(int exit_value)
   FreeAllMusic();
   CloseAudio();                /* called after freeing sounds (needed for SDL) */
 
+#if 1
+  em_close_all();
+#endif
+
   FreeAllImages();
   FreeTileClipmasks();
 
+#if defined(TARGET_SDL)
+  if (network_server)  /* terminate network server */
+    SDL_KillThread(server_thread);
+#endif
+
   CloseVideoDisplay();
   ClosePlatformDependentStuff();