X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;f=src%2Ffiles.c;h=0fd7a18ade6db1691778942d270aee3e8f15ecb7;hb=cee436b68cda95e13abc810235a11ce94bc79c95;hp=a6b41e1ba640f2a226a87288ce45b98304be3971;hpb=fd1c9b7a9b8d2fc25b2b4beffc224c39ee73bb35;p=rocksndiamonds.git

diff --git a/src/files.c b/src/files.c
index a6b41e1b..0fd7a18a 100644
--- a/src/files.c
+++ b/src/files.c
@@ -29,7 +29,7 @@
 #define CHUNK_SIZE_NONE		-1	/* do not write chunk size    */
 #define FILE_VERS_CHUNK_SIZE	8	/* size of file version chunk */
 #define LEVEL_HEADER_SIZE	80	/* size of level file header  */
-#define LEVEL_HEADER_UNUSED	7	/* unused level header bytes  */
+#define LEVEL_HEADER_UNUSED	1	/* unused level header bytes  */
 #define LEVEL_CHUNK_CNT2_SIZE	160	/* size of level CNT2 chunk   */
 #define LEVEL_CHUNK_CNT2_UNUSED	11	/* unused CNT2 chunk bytes    */
 #define LEVEL_CHUNK_CNT3_HEADER	16	/* size of level CNT3 header  */
@@ -49,22 +49,6 @@
 #define TAPE_COOKIE_TMPL	"ROCKSNDIAMONDS_TAPE_FILE_VERSION_x.x"
 #define SCORE_COOKIE		"ROCKSNDIAMONDS_SCORE_FILE_VERSION_1.2"
 
-/* values for level file type identifier */
-#define LEVEL_FILE_TYPE_UNKNOWN		0
-#define LEVEL_FILE_TYPE_RND		1
-#define LEVEL_FILE_TYPE_BD		2
-#define LEVEL_FILE_TYPE_EM		3
-#define LEVEL_FILE_TYPE_SP		4
-#define LEVEL_FILE_TYPE_DX		5
-#define LEVEL_FILE_TYPE_SB		6
-#define LEVEL_FILE_TYPE_DC		7
-
-#define LEVEL_FILE_TYPE_RND_PACKED	(10 + LEVEL_FILE_TYPE_RND)
-#define LEVEL_FILE_TYPE_EM_PACKED	(10 + LEVEL_FILE_TYPE_EM)
-
-#define IS_SINGLE_LEVEL_FILE(x)		(x < 10)
-#define IS_PACKED_LEVEL_FILE(x)		(x > 10)
-
 
 /* ========================================================================= */
 /* level file functions                                                      */
@@ -106,15 +90,15 @@ void setElementChangeInfoToDefaults(struct ElementChangeInfo *change)
   change->trigger_element = EL_EMPTY_SPACE;
 
   change->explode = FALSE;
-  change->use_content = FALSE;
-  change->only_complete = FALSE;
-  change->use_random_change = FALSE;
-  change->random = 100;
-  change->power = CP_NON_DESTRUCTIVE;
+  change->use_target_content = FALSE;
+  change->only_if_complete = FALSE;
+  change->use_random_replace = FALSE;
+  change->random_percentage = 100;
+  change->replace_when = CP_WHEN_EMPTY;
 
   for (x = 0; x < 3; x++)
     for (y = 0; y < 3; y++)
-      change->content[x][y] = EL_EMPTY_SPACE;
+      change->target_content[x][y] = EL_EMPTY_SPACE;
 
   change->direct_action = 0;
   change->other_action = 0;
@@ -126,6 +110,8 @@ void setElementChangeInfoToDefaults(struct ElementChangeInfo *change)
 
 static void setLevelInfoToDefaults(struct LevelInfo *level)
 {
+  static boolean clipboard_elements_initialized = FALSE;
+
   int i, j, x, y;
 
   level->file_version = FILE_VERSION_ACTUAL;
@@ -157,13 +143,19 @@ static void setLevelInfoToDefaults(struct LevelInfo *level)
   level->double_speed = FALSE;
   level->initial_gravity = FALSE;
   level->em_slippery_gems = FALSE;
-  level->block_last_field = FALSE;
-  level->sp_block_last_field = TRUE;
+  level->instant_relocation = FALSE;
+  level->can_pass_to_walkable = FALSE;
+  level->grow_into_diggable = TRUE;
 
-  level->use_spring_bug = FALSE;
+  level->block_last_field = FALSE;	/* EM does not block by default */
+  level->sp_block_last_field = TRUE;	/* SP blocks the last field */
+  level->block_delay = 8;		/* when blocking, block 8 frames */
+  level->sp_block_delay = 9;		/* SP indeed blocks 9 frames, not 8 */
 
   level->can_move_into_acid_bits = ~0;	/* everything can move into acid */
+  level->dont_collide_with_bits = ~0;	/* always deadly when colliding */
 
+  level->use_spring_bug = FALSE;
   level->use_step_counter = FALSE;
 
   level->use_custom_template = FALSE;
@@ -200,10 +192,16 @@ static void setLevelInfoToDefaults(struct LevelInfo *level)
   {
     int element = i;
 
+    /* never initialize clipboard elements after the very first time */
+    if (IS_CLIPBOARD_ELEMENT(element) && clipboard_elements_initialized)
+      continue;
+
     setElementChangePages(&element_info[element], 1);
     setElementChangeInfoToDefaults(element_info[element].change);
 
-    if (IS_CUSTOM_ELEMENT(element) || IS_GROUP_ELEMENT(element))
+    if (IS_CUSTOM_ELEMENT(element) ||
+	IS_GROUP_ELEMENT(element) ||
+	IS_INTERNAL_ELEMENT(element))
     {
       for (j = 0; j < MAX_ELEMENT_NAME_LEN + 1; j++)
 	element_info[element].description[j] = '\0';
@@ -217,9 +215,12 @@ static void setLevelInfoToDefaults(struct LevelInfo *level)
 
       element_info[element].use_gfx_element = FALSE;
       element_info[element].gfx_element = EL_EMPTY_SPACE;
+
+      element_info[element].modified_settings = FALSE;
     }
 
-    if (IS_CUSTOM_ELEMENT(element))
+    if (IS_CUSTOM_ELEMENT(element) ||
+	IS_INTERNAL_ELEMENT(element))
     {
       element_info[element].access_direction = MV_ALL_DIRECTIONS;
 
@@ -228,19 +229,23 @@ static void setLevelInfoToDefaults(struct LevelInfo *level)
 
       element_info[element].push_delay_fixed = -1;	/* initialize later */
       element_info[element].push_delay_random = -1;	/* initialize later */
+      element_info[element].drop_delay_fixed = 0;
+      element_info[element].drop_delay_random = 0;
       element_info[element].move_delay_fixed = 0;
       element_info[element].move_delay_random = 0;
 
       element_info[element].move_pattern = MV_ALL_DIRECTIONS;
       element_info[element].move_direction_initial = MV_START_AUTOMATIC;
       element_info[element].move_stepsize = TILEX / 8;
+
       element_info[element].move_enter_element = EL_EMPTY_SPACE;
       element_info[element].move_leave_element = EL_EMPTY_SPACE;
       element_info[element].move_leave_type = LEAVE_TYPE_UNLIMITED;
 
       element_info[element].slippery_type = SLIPPERY_ANY_RANDOM;
 
-      element_info[element].explosion_delay = 18;
+      element_info[element].explosion_type = EXPLODES_3X3;
+      element_info[element].explosion_delay = 16;
       element_info[element].ignition_delay = 8;
 
       for (x = 0; x < 3; x++)
@@ -253,7 +258,6 @@ static void setLevelInfoToDefaults(struct LevelInfo *level)
       element_info[element].walk_to_action = 0;
       element_info[element].smash_targets = 0;
       element_info[element].deadliness = 0;
-      element_info[element].consistency = 0;
 
       element_info[element].can_explode_by_fire = FALSE;
       element_info[element].can_explode_smashed = FALSE;
@@ -267,10 +271,10 @@ static void setLevelInfoToDefaults(struct LevelInfo *level)
 
       /* now set default properties */
       SET_PROPERTY(element, EP_CAN_MOVE_INTO_ACID, TRUE);
-
-      element_info[element].modified_settings = FALSE;
     }
-    else if (IS_GROUP_ELEMENT(element) || element == EL_INTERNAL_EDITOR)
+
+    if (IS_GROUP_ELEMENT(element) ||
+	IS_INTERNAL_ELEMENT(element))
     {
       /* initialize memory for list of elements in group */
       if (element_info[element].group == NULL)
@@ -287,9 +291,13 @@ static void setLevelInfoToDefaults(struct LevelInfo *level)
     }
   }
 
+  clipboard_elements_initialized = TRUE;
+
   BorderElement = EL_STEELWALL;
 
-  level->no_level_file = FALSE;
+  level->no_valid_file = FALSE;
+
+  level->changed = FALSE;
 
   if (leveldir_current == NULL)		/* only when dumping level */
     return;
@@ -527,6 +535,20 @@ static void determineLevelFileInfo_Filetype(struct LevelFileInfo *lfi)
     lfi->type = getFileTypeFromBasename(lfi->basename);
 }
 
+#if 1
+static void setLevelFileInfo(struct LevelFileInfo *level_file_info, int nr)
+{
+  /* always start with reliable default values */
+  setFileInfoToDefaults(level_file_info);
+
+  level_file_info->nr = nr;	/* set requested level number */
+
+  determineLevelFileInfo_Filename(level_file_info);
+  determineLevelFileInfo_Filetype(level_file_info);
+}
+
+#else
+
 static struct LevelFileInfo *getLevelFileInfo(int nr)
 {
   static struct LevelFileInfo level_file_info;
@@ -541,7 +563,7 @@ static struct LevelFileInfo *getLevelFileInfo(int nr)
 
   return &level_file_info;
 }
-
+#endif
 
 /* ------------------------------------------------------------------------- */
 /* functions for loading R'n'D level                                         */
@@ -680,13 +702,16 @@ static int LoadLevel_HEAD(FILE *file, int chunk_size, struct LevelInfo *level)
 
   level->block_last_field	= (getFile8Bit(file) == 1 ? TRUE : FALSE);
   level->sp_block_last_field	= (getFile8Bit(file) == 1 ? TRUE : FALSE);
+  level->can_move_into_acid_bits = getFile32BitBE(file);
+  level->dont_collide_with_bits = getFile8Bit(file);
 
   level->use_spring_bug		= (getFile8Bit(file) == 1 ? TRUE : FALSE);
-
-  level->can_move_into_acid_bits = getFile16BitBE(file);
-
   level->use_step_counter	= (getFile8Bit(file) == 1 ? TRUE : FALSE);
 
+  level->instant_relocation	= (getFile8Bit(file) == 1 ? TRUE : FALSE);
+  level->can_pass_to_walkable	= (getFile8Bit(file) == 1 ? TRUE : FALSE);
+  level->grow_into_diggable	= (getFile8Bit(file) == 1 ? TRUE : FALSE);
+
   ReadUnusedBytesFromFile(file, LEVEL_HEADER_UNUSED);
 
   return chunk_size;
@@ -966,16 +991,16 @@ static int LoadLevel_CUS3(FILE *file, int chunk_size, struct LevelInfo *level)
       getMappedElement(getFile16BitBE(file));
 
     element_info[element].change->explode = getFile8Bit(file);
-    element_info[element].change->use_content = getFile8Bit(file);
-    element_info[element].change->only_complete = getFile8Bit(file);
-    element_info[element].change->use_random_change = getFile8Bit(file);
+    element_info[element].change->use_target_content = getFile8Bit(file);
+    element_info[element].change->only_if_complete = getFile8Bit(file);
+    element_info[element].change->use_random_replace = getFile8Bit(file);
 
-    element_info[element].change->random = getFile8Bit(file);
-    element_info[element].change->power = getFile8Bit(file);
+    element_info[element].change->random_percentage = getFile8Bit(file);
+    element_info[element].change->replace_when = getFile8Bit(file);
 
     for (y = 0; y < 3; y++)
       for (x = 0; x < 3; x++)
-	element_info[element].change->content[x][y] =
+	element_info[element].change->target_content[x][y] =
 	  getMappedElement(getFile16BitBE(file));
 
     element_info[element].slippery_type = getFile8Bit(file);
@@ -1036,8 +1061,10 @@ static int LoadLevel_CUS4(FILE *file, int chunk_size, struct LevelInfo *level)
   ei->collect_score = getFile8Bit(file);
   ei->collect_count = getFile8Bit(file);
 
-  ei->push_delay_fixed = getFile16BitBE(file);
-  ei->push_delay_random = getFile16BitBE(file);
+  ei->drop_delay_fixed = getFile8Bit(file);
+  ei->push_delay_fixed = getFile8Bit(file);
+  ei->drop_delay_random = getFile8Bit(file);
+  ei->push_delay_random = getFile8Bit(file);
   ei->move_delay_fixed = getFile16BitBE(file);
   ei->move_delay_random = getFile16BitBE(file);
 
@@ -1063,9 +1090,10 @@ static int LoadLevel_CUS4(FILE *file, int chunk_size, struct LevelInfo *level)
 
   ei->explosion_delay = getFile8Bit(file);
   ei->ignition_delay = getFile8Bit(file);
+  ei->explosion_type = getFile8Bit(file);
 
   /* some free bytes for future custom property values and padding */
-  ReadUnusedBytesFromFile(file, 2);
+  ReadUnusedBytesFromFile(file, 1);
 
   /* read change property values */
 
@@ -1089,16 +1117,16 @@ static int LoadLevel_CUS4(FILE *file, int chunk_size, struct LevelInfo *level)
     change->trigger_element = getMappedElement(getFile16BitBE(file));
 
     change->explode = getFile8Bit(file);
-    change->use_content = getFile8Bit(file);
-    change->only_complete = getFile8Bit(file);
-    change->use_random_change = getFile8Bit(file);
+    change->use_target_content = getFile8Bit(file);
+    change->only_if_complete = getFile8Bit(file);
+    change->use_random_replace = getFile8Bit(file);
 
-    change->random = getFile8Bit(file);
-    change->power = getFile8Bit(file);
+    change->random_percentage = getFile8Bit(file);
+    change->replace_when = getFile8Bit(file);
 
     for (y = 0; y < 3; y++)
       for (x = 0; x < 3; x++)
-	change->content[x][y] = getMappedElement(getFile16BitBE(file));
+	change->target_content[x][y] = getMappedElement(getFile16BitBE(file));
 
     change->can_change = getFile8Bit(file);
 
@@ -1182,7 +1210,7 @@ static void LoadLevelFromFileInfo_RND(struct LevelInfo *level,
 
   if (!(file = fopen(filename, MODE_READ)))
   {
-    level->no_level_file = TRUE;
+    level->no_valid_file = TRUE;
 
     if (level != &level_template)
       Error(ERR_WARN, "cannot read level '%s' -- using empty level", filename);
@@ -1198,6 +1226,8 @@ static void LoadLevelFromFileInfo_RND(struct LevelInfo *level,
     getFileChunkBE(file, chunk_name, NULL);
     if (strcmp(chunk_name, "CAVE") != 0)
     {
+      level->no_valid_file = TRUE;
+
       Error(ERR_WARN, "unknown format of level file '%s'", filename);
       fclose(file);
       return;
@@ -1212,6 +1242,8 @@ static void LoadLevelFromFileInfo_RND(struct LevelInfo *level,
 
     if (!checkCookieString(cookie, LEVEL_COOKIE_TMPL))
     {
+      level->no_valid_file = TRUE;
+
       Error(ERR_WARN, "unknown format of level file '%s'", filename);
       fclose(file);
       return;
@@ -1219,6 +1251,8 @@ static void LoadLevelFromFileInfo_RND(struct LevelInfo *level,
 
     if ((level->file_version = getFileVersionFromCookieString(cookie)) == -1)
     {
+      level->no_valid_file = TRUE;
+
       Error(ERR_WARN, "unsupported version of level file '%s'", filename);
       fclose(file);
       return;
@@ -1632,7 +1666,7 @@ static void LoadLevelFromFileInfo_EM(struct LevelInfo *level,
 
   if (!(file = fopen(filename, MODE_READ)))
   {
-    level->no_level_file = TRUE;
+    level->no_valid_file = TRUE;
 
     Error(ERR_WARN, "cannot read level '%s' -- using empty level", filename);
 
@@ -1739,8 +1773,12 @@ static void LoadLevelFromFileInfo_EM(struct LevelInfo *level,
 static void LoadLevelFromFileStream_SP(FILE *file, struct LevelInfo *level,
 				       int nr)
 {
+  int num_special_ports;
   int i, x, y;
 
+  /* for details of the Supaplex level format, see Herman Perk's Supaplex
+     documentation file "SPFIX63.DOC" from his Supaplex "SpeedFix" package */
+
   /* read level body (width * height == 60 * 24 tiles == 1440 bytes) */
   for (y = 0; y < SP_LEVEL_YSIZE; y++)
   {
@@ -1765,28 +1803,104 @@ static void LoadLevelFromFileStream_SP(FILE *file, struct LevelInfo *level,
     }
   }
 
-  ReadUnusedBytesFromFile(file, 4);
+  ReadUnusedBytesFromFile(file, 4);	/* (not used by Supaplex engine) */
 
-  /* Initial gravitation: 1 == "on", anything else (0) == "off" */
+  /* initial gravity: 1 == "on", anything else (0) == "off" */
   level->initial_gravity = (fgetc(file) == 1 ? TRUE : FALSE);
 
-  ReadUnusedBytesFromFile(file, 1);
+  ReadUnusedBytesFromFile(file, 1);	/* (not used by Supaplex engine) */
 
   /* level title in uppercase letters, padded with dashes ("-") (23 bytes) */
   for (i = 0; i < SP_LEVEL_NAME_LEN; i++)
     level->name[i] = fgetc(file);
   level->name[SP_LEVEL_NAME_LEN] = '\0';
 
-  /* initial "freeze zonks": 2 == "on", anything else (0) == "off" */
-  ReadUnusedBytesFromFile(file, 1);	/* !!! NOT SUPPORTED YET !!! */
+  /* initial "freeze zonks": 2 == "on", anything else (0, 1) == "off" */
+  ReadUnusedBytesFromFile(file, 1);	/* (not used by R'n'D engine) */
 
   /* number of infotrons needed; 0 means that Supaplex will count the total
-     amount of infotrons in the level and use the low byte of that number.
+     amount of infotrons in the level and use the low byte of that number
      (a multiple of 256 infotrons will result in "0 infotrons needed"!) */
   level->gems_needed = fgetc(file);
 
-  /* information about special gravity port entries */
-  ReadUnusedBytesFromFile(file, 65);	/* !!! NOT SUPPORTED YET !!! */
+  /* number of special ("gravity") port entries below (maximum 10 allowed) */
+  num_special_ports = fgetc(file);
+
+  /* database of properties of up to 10 special ports (6 bytes per port) */
+  for (i = 0; i < 10; i++)
+  {
+    int port_location, port_x, port_y, port_element;
+    int gravity;
+
+    /* high and low byte of the location of a special port; if (x, y) are the
+       coordinates of a port in the field and (0, 0) is the top-left corner,
+       the 16 bit value here calculates as 2 * (x + (y * 60)) (this is twice
+       of what may be expected: Supaplex works with a game field in memory
+       which is 2 bytes per tile) */
+    port_location = getFile16BitBE(file);
+
+    /* change gravity: 1 == "turn on", anything else (0) == "turn off" */
+    gravity = fgetc(file);
+
+    /* "freeze zonks": 2 == "turn on", anything else (0, 1) == "turn off" */
+    ReadUnusedBytesFromFile(file, 1);	/* (not used by R'n'D engine) */
+
+    /* "freeze enemies": 1 == "turn on", anything else (0) == "turn off" */
+    ReadUnusedBytesFromFile(file, 1);	/* (not used by R'n'D engine) */
+
+    ReadUnusedBytesFromFile(file, 1);	/* (not used by Supaplex engine) */
+
+    if (i >= num_special_ports)
+      continue;
+
+    port_x = (port_location / 2) % SP_LEVEL_XSIZE;
+    port_y = (port_location / 2) / SP_LEVEL_XSIZE;
+
+    if (port_x < 0 || port_x >= SP_LEVEL_XSIZE ||
+	port_y < 0 || port_y >= SP_LEVEL_YSIZE)
+    {
+      Error(ERR_WARN, "special port position (%d, %d) out of bounds",
+	    port_x, port_y);
+
+      continue;
+    }
+
+    port_element = level->field[port_x][port_y];
+
+    if (port_element < EL_SP_GRAVITY_PORT_RIGHT ||
+	port_element > EL_SP_GRAVITY_PORT_UP)
+    {
+      Error(ERR_WARN, "no special port at position (%d, %d)", port_x, port_y);
+
+      continue;
+    }
+
+    /* change previous (wrong) gravity inverting special port to either
+       gravity enabling special port or gravity disabling special port */
+    level->field[port_x][port_y] +=
+      (gravity == 1 ? EL_SP_GRAVITY_ON_PORT_RIGHT :
+       EL_SP_GRAVITY_OFF_PORT_RIGHT) - EL_SP_GRAVITY_PORT_RIGHT;
+  }
+
+  ReadUnusedBytesFromFile(file, 4);	/* (not used by Supaplex engine) */
+
+  /* change special gravity ports without database entries to normal ports */
+  for (y = 0; y < SP_LEVEL_YSIZE; y++)
+    for (x = 0; x < SP_LEVEL_XSIZE; x++)
+      if (level->field[x][y] >= EL_SP_GRAVITY_PORT_RIGHT &&
+	  level->field[x][y] <= EL_SP_GRAVITY_PORT_UP)
+	level->field[x][y] += EL_SP_PORT_RIGHT - EL_SP_GRAVITY_PORT_RIGHT;
+
+  /* auto-determine number of infotrons if it was stored as "0" -- see above */
+  if (level->gems_needed == 0)
+  {
+    for (y = 0; y < SP_LEVEL_YSIZE; y++)
+      for (x = 0; x < SP_LEVEL_XSIZE; x++)
+	if (level->field[x][y] == EL_SP_INFOTRON)
+	  level->gems_needed++;
+
+    level->gems_needed &= 0xff;		/* only use low byte -- see above */
+  }
 
   level->fieldx = SP_LEVEL_XSIZE;
   level->fieldy = SP_LEVEL_YSIZE;
@@ -1824,7 +1938,7 @@ static void LoadLevelFromFileInfo_SP(struct LevelInfo *level,
 
   if (!(file = fopen(filename, MODE_READ)))
   {
-    level->no_level_file = TRUE;
+    level->no_valid_file = TRUE;
 
     Error(ERR_WARN, "cannot read level '%s' -- using empty level", filename);
 
@@ -1834,7 +1948,7 @@ static void LoadLevelFromFileInfo_SP(struct LevelInfo *level,
   /* position file stream to the requested level inside the level package */
   if (fseek(file, nr * SP_LEVEL_SIZE, SEEK_SET) != 0)
   {
-    level->no_level_file = TRUE;
+    level->no_valid_file = TRUE;
 
     Error(ERR_WARN, "cannot fseek level '%s' -- using empty level", filename);
 
@@ -2066,6 +2180,11 @@ static void LoadLevel_InitVersion(struct LevelInfo *level, char *filename)
        pre-2.0 levels, where the game version is still taken from the
        file format version used to store the level -- see above). */
 
+#if 1
+    /* player was faster than enemies in 1.0.0 and before */
+    if (level->file_version == FILE_VERSION_1_0)
+      level->double_speed = TRUE;
+#else
     /* do some special adjustments to support older level versions */
     if (level->file_version == FILE_VERSION_1_0)
     {
@@ -2075,19 +2194,23 @@ static void LoadLevel_InitVersion(struct LevelInfo *level, char *filename)
       /* player was faster than monsters in (pre-)1.0 levels */
       level->double_speed = TRUE;
     }
+#endif
 
-    /* Default behaviour for EM style gems was "slippery" only in 2.0.1 */
+    /* default behaviour for EM style gems was "slippery" only in 2.0.1 */
     if (level->game_version == VERSION_IDENT(2,0,1,0))
       level->em_slippery_gems = TRUE;
 
+    /* springs could be pushed over pits before (pre-release version) 2.2.0 */
     if (level->game_version < VERSION_IDENT(2,2,0,0))
       level->use_spring_bug = TRUE;
 
-    if (level->game_version < VERSION_IDENT(3,0,9,0))
+    /* only few elements were able to actively move into acid before 3.1.0 */
+    if (level->game_version < VERSION_IDENT(3,1,0,0))
     {
       int i, j;
 
       level->can_move_into_acid_bits = 0; /* nothing can move into acid */
+      level->dont_collide_with_bits = 0; /* nothing is deadly when colliding */
 
       setMoveIntoAcidProperty(level, EL_ROBOT,     TRUE);
       setMoveIntoAcidProperty(level, EL_SATELLITE, TRUE);
@@ -2111,8 +2234,25 @@ static void LoadLevel_InitVersion(struct LevelInfo *level, char *filename)
 	}
       }
     }
+
+#if 1	/* USE_NEW_BLOCK_STYLE */
+    /* blocking the last field when moving was corrected in version 3.1.1 */
+    if (level->game_version < VERSION_IDENT(3,1,1,0))
+    {
+#if 0
+      printf("::: %d\n", level->block_last_field);
+#endif
+
+      /* even "not blocking" was blocking the last field for one frame */
+      level->block_delay    = (level->block_last_field    ? 7 : 1);
+      level->sp_block_delay = (level->sp_block_last_field ? 7 : 1);
+
+      level->block_last_field = TRUE;
+      level->sp_block_last_field = TRUE;
+    }
+#endif
   }
-  else
+  else		/* always use the latest game engine version */
   {
 #if 0
     printf("\n::: ALWAYS USE LATEST ENGINE FOR THIS LEVEL: [%d] '%s'\n",
@@ -2233,6 +2373,39 @@ static void LoadLevel_InitElements(struct LevelInfo *level, char *filename)
     }
   }
 
+  /* initialize "can_explode" field for old levels which did not store this */
+  /* !!! CHECK THIS -- "<= 3,1,0,0" IS PROBABLY WRONG !!! */
+  if (level->game_version <= VERSION_IDENT(3,1,0,0))
+  {
+    for (i = 0; i < NUM_CUSTOM_ELEMENTS; i++)
+    {
+      int element = EL_CUSTOM_START + i;
+
+      if (EXPLODES_1X1_OLD(element))
+	element_info[element].explosion_type = EXPLODES_1X1;
+
+      SET_PROPERTY(element, EP_CAN_EXPLODE, (EXPLODES_BY_FIRE(element) ||
+					     EXPLODES_SMASHED(element) ||
+					     EXPLODES_IMPACT(element)));
+    }
+  }
+
+  /* correct previously hard-coded move delay values for maze runner style */
+  if (level->game_version < VERSION_IDENT(3,1,1,0))
+  {
+    for (i = 0; i < NUM_CUSTOM_ELEMENTS; i++)
+    {
+      int element = EL_CUSTOM_START + i;
+
+      if (element_info[element].move_pattern & MV_MAZE_RUNNER_STYLE)
+      {
+	/* previously hard-coded and therefore ignored */
+	element_info[element].move_delay_fixed = 9;
+	element_info[element].move_delay_random = 0;
+      }
+    }
+  }
+
 #if 0
   /* set default push delay values (corrected since version 3.0.7-1) */
   if (level->game_version < VERSION_IDENT(3,0,7,1))
@@ -2325,6 +2498,16 @@ static void LoadLevel_InitPlayfield(struct LevelInfo *level, char *filename)
 
 void LoadLevelTemplate(int nr)
 {
+#if 1
+  char *filename;
+
+  setLevelFileInfo(&level_template.file_info, nr);
+  filename = level_template.file_info.filename;
+
+  LoadLevelFromFileInfo(&level_template, &level_template.file_info);
+
+#else
+
 #if 1
   struct LevelFileInfo *level_file_info = getLevelFileInfo(nr);
   char *filename = level_file_info->filename;
@@ -2335,15 +2518,31 @@ void LoadLevelTemplate(int nr)
 
   LoadLevelFromFilename_RND(&level_template, filename);
 #endif
+#endif
 
+#if 1
+  LoadLevel_InitVersion(&level_template, filename);
+  LoadLevel_InitElements(&level_template, filename);
+#else
   LoadLevel_InitVersion(&level, filename);
   LoadLevel_InitElements(&level, filename);
+#endif
 
   ActivateLevelTemplate();
 }
 
 void LoadLevel(int nr)
 {
+#if 1
+  char *filename;
+
+  setLevelFileInfo(&level.file_info, nr);
+  filename = level.file_info.filename;
+
+  LoadLevelFromFileInfo(&level, &level.file_info);
+
+#else
+
 #if 1
   struct LevelFileInfo *level_file_info = getLevelFileInfo(nr);
   char *filename = level_file_info->filename;
@@ -2353,6 +2552,7 @@ void LoadLevel(int nr)
   char *filename = getLevelFilename(nr);
 
   LoadLevelFromFilename_RND(&level, filename);
+#endif
 #endif
 
   if (level.use_custom_template)
@@ -2408,13 +2608,16 @@ static void SaveLevel_HEAD(FILE *file, struct LevelInfo *level)
 
   putFile8Bit(file, (level->block_last_field ? 1 : 0));
   putFile8Bit(file, (level->sp_block_last_field ? 1 : 0));
+  putFile32BitBE(file, level->can_move_into_acid_bits);
+  putFile8Bit(file, level->dont_collide_with_bits);
 
   putFile8Bit(file, (level->use_spring_bug ? 1 : 0));
-
-  putFile16BitBE(file, level->can_move_into_acid_bits);
-
   putFile8Bit(file, (level->use_step_counter ? 1 : 0));
 
+  putFile8Bit(file, (level->instant_relocation ? 1 : 0));
+  putFile8Bit(file, (level->can_pass_to_walkable ? 1 : 0));
+  putFile8Bit(file, (level->grow_into_diggable ? 1 : 0));
+
   WriteUnusedBytesToFile(file, LEVEL_HEADER_UNUSED);
 }
 
@@ -2640,12 +2843,12 @@ static void SaveLevel_CUS3(FILE *file, struct LevelInfo *level,
 	putFile16BitBE(file, element_info[element].change->trigger_element);
 
 	putFile8Bit(file, element_info[element].change->explode);
-	putFile8Bit(file, element_info[element].change->use_content);
-	putFile8Bit(file, element_info[element].change->only_complete);
-	putFile8Bit(file, element_info[element].change->use_random_change);
+	putFile8Bit(file, element_info[element].change->use_target_content);
+	putFile8Bit(file, element_info[element].change->only_if_complete);
+	putFile8Bit(file, element_info[element].change->use_random_replace);
 
-	putFile8Bit(file, element_info[element].change->random);
-	putFile8Bit(file, element_info[element].change->power);
+	putFile8Bit(file, element_info[element].change->random_percentage);
+	putFile8Bit(file, element_info[element].change->replace_when);
 
 	for (y = 0; y < 3; y++)
 	  for (x = 0; x < 3; x++)
@@ -2692,8 +2895,10 @@ static void SaveLevel_CUS4(FILE *file, struct LevelInfo *level, int element)
   putFile8Bit(file, ei->collect_score);
   putFile8Bit(file, ei->collect_count);
 
-  putFile16BitBE(file, ei->push_delay_fixed);
-  putFile16BitBE(file, ei->push_delay_random);
+  putFile8Bit(file, ei->drop_delay_fixed);
+  putFile8Bit(file, ei->push_delay_fixed);
+  putFile8Bit(file, ei->drop_delay_random);
+  putFile8Bit(file, ei->push_delay_random);
   putFile16BitBE(file, ei->move_delay_fixed);
   putFile16BitBE(file, ei->move_delay_random);
 
@@ -2719,9 +2924,10 @@ static void SaveLevel_CUS4(FILE *file, struct LevelInfo *level, int element)
 
   putFile8Bit(file, ei->explosion_delay);
   putFile8Bit(file, ei->ignition_delay);
+  putFile8Bit(file, ei->explosion_type);
 
   /* some free bytes for future custom property values and padding */
-  WriteUnusedBytesToFile(file, 2);
+  WriteUnusedBytesToFile(file, 1);
 
   /* write change property values */
 
@@ -2740,16 +2946,16 @@ static void SaveLevel_CUS4(FILE *file, struct LevelInfo *level, int element)
     putFile16BitBE(file, change->trigger_element);
 
     putFile8Bit(file, change->explode);
-    putFile8Bit(file, change->use_content);
-    putFile8Bit(file, change->only_complete);
-    putFile8Bit(file, change->use_random_change);
+    putFile8Bit(file, change->use_target_content);
+    putFile8Bit(file, change->only_if_complete);
+    putFile8Bit(file, change->use_random_replace);
 
-    putFile8Bit(file, change->random);
-    putFile8Bit(file, change->power);
+    putFile8Bit(file, change->random_percentage);
+    putFile8Bit(file, change->replace_when);
 
     for (y = 0; y < 3; y++)
       for (x = 0; x < 3; x++)
-	putFile16BitBE(file, change->content[x][y]);
+	putFile16BitBE(file, change->target_content[x][y]);
 
     putFile8Bit(file, change->can_change);
 
@@ -2928,6 +3134,13 @@ void SaveLevelTemplate()
 
 void DumpLevel(struct LevelInfo *level)
 {
+  if (level->no_valid_file)
+  {
+    Error(ERR_WARN, "cannot dump -- no valid level file found");
+
+    return;
+  }
+
   printf_line("-", 79);
   printf("Level xxx (file version %08d, game version %08d)\n",
 	 level->file_version, level->game_version);
@@ -2986,6 +3199,8 @@ static void setTapeInfoToDefaults()
   tape.recording = FALSE;
   tape.playing = FALSE;
   tape.pausing = FALSE;
+
+  tape.no_valid_file = FALSE;
 }
 
 static int LoadTape_VERS(FILE *file, int chunk_size, struct TapeInfo *tape)
@@ -3150,7 +3365,15 @@ void LoadTapeFromFilename(char *filename)
   setTapeInfoToDefaults();
 
   if (!(file = fopen(filename, MODE_READ)))
+  {
+    tape.no_valid_file = TRUE;
+
+#if 0
+    Error(ERR_WARN, "cannot read tape '%s' -- using empty tape", filename);
+#endif
+
     return;
+  }
 
   getFileChunkBE(file, chunk_name, NULL);
   if (strcmp(chunk_name, "RND1") == 0)
@@ -3160,6 +3383,8 @@ void LoadTapeFromFilename(char *filename)
     getFileChunkBE(file, chunk_name, NULL);
     if (strcmp(chunk_name, "TAPE") != 0)
     {
+      tape.no_valid_file = TRUE;
+
       Error(ERR_WARN, "unknown format of tape file '%s'", filename);
       fclose(file);
       return;
@@ -3174,6 +3399,8 @@ void LoadTapeFromFilename(char *filename)
 
     if (!checkCookieString(cookie, TAPE_COOKIE_TMPL))
     {
+      tape.no_valid_file = TRUE;
+
       Error(ERR_WARN, "unknown format of tape file '%s'", filename);
       fclose(file);
       return;
@@ -3181,6 +3408,8 @@ void LoadTapeFromFilename(char *filename)
 
     if ((tape.file_version = getFileVersionFromCookieString(cookie)) == -1)
     {
+      tape.no_valid_file = TRUE;
+
       Error(ERR_WARN, "unsupported version of tape file '%s'", filename);
       fclose(file);
       return;
@@ -3397,15 +3626,27 @@ void DumpTape(struct TapeInfo *tape)
 {
   int i, j;
 
+#if 1
+  if (tape->no_valid_file)
+  {
+    Error(ERR_WARN, "cannot dump -- no valid tape file found");
+
+    return;
+  }
+#else
   if (TAPE_IS_EMPTY(*tape))
   {
     Error(ERR_WARN, "no tape available for level %d", tape->level_nr);
+
     return;
   }
+#endif
 
   printf_line("-", 79);
   printf("Tape of Level %03d (file version %08d, game version %08d)\n",
 	 tape->level_nr, tape->file_version, tape->game_version);
+  printf("                  (effective engine version %08d)\n",
+	 tape->engine_version);
   printf("Level series identifier: '%s'\n", tape->level_identifier);
   printf_line("-", 79);
 
@@ -4648,3 +4889,117 @@ void LoadHelpTextInfo()
   END_HASH_ITERATION(hash, itr)
 #endif
 }
+
+
+/* ------------------------------------------------------------------------- *
+ * convert levels
+ * ------------------------------------------------------------------------- */
+
+#define MAX_NUM_CONVERT_LEVELS		1000
+
+void ConvertLevels()
+{
+  static LevelDirTree *convert_leveldir = NULL;
+  static int convert_level_nr = -1;
+  static int num_levels_handled = 0;
+  static int num_levels_converted = 0;
+  static boolean levels_failed[MAX_NUM_CONVERT_LEVELS];
+  int i;
+
+  convert_leveldir = getTreeInfoFromIdentifier(leveldir_first,
+					       global.convert_leveldir);
+
+  if (convert_leveldir == NULL)
+    Error(ERR_EXIT, "no such level identifier: '%s'",
+	  global.convert_leveldir);
+
+  leveldir_current = convert_leveldir;
+
+  if (global.convert_level_nr != -1)
+  {
+    convert_leveldir->first_level = global.convert_level_nr;
+    convert_leveldir->last_level  = global.convert_level_nr;
+  }
+
+  convert_level_nr = convert_leveldir->first_level;
+
+  printf_line("=", 79);
+  printf("Converting levels\n");
+  printf_line("-", 79);
+  printf("Level series identifier: '%s'\n", convert_leveldir->identifier);
+  printf("Level series name:       '%s'\n", convert_leveldir->name);
+  printf("Level series author:     '%s'\n", convert_leveldir->author);
+  printf("Number of levels:        %d\n",   convert_leveldir->levels);
+  printf_line("=", 79);
+  printf("\n");
+
+  for (i = 0; i < MAX_NUM_CONVERT_LEVELS; i++)
+    levels_failed[i] = FALSE;
+
+  while (convert_level_nr <= convert_leveldir->last_level)
+  {
+    char *level_filename;
+    boolean new_level;
+
+    level_nr = convert_level_nr++;
+
+    printf("Level %03d: ", level_nr);
+
+    LoadLevel(level_nr);
+    if (level.no_valid_file)
+    {
+      printf("(no level)\n");
+      continue;
+    }
+
+    printf("converting level ... ");
+
+    level_filename = getDefaultLevelFilename(level_nr);
+    new_level = !fileExists(level_filename);
+
+    if (new_level)
+    {
+      SaveLevel(level_nr);
+
+      num_levels_converted++;
+
+      printf("converted.\n");
+    }
+    else
+    {
+      if (level_nr >= 0 && level_nr < MAX_NUM_CONVERT_LEVELS)
+	levels_failed[level_nr] = TRUE;
+
+      printf("NOT CONVERTED -- LEVEL ALREADY EXISTS.\n");
+    }
+
+    num_levels_handled++;
+  }
+
+  printf("\n");
+  printf_line("=", 79);
+  printf("Number of levels handled: %d\n", num_levels_handled);
+  printf("Number of levels converted: %d (%d%%)\n", num_levels_converted,
+	 (num_levels_handled ?
+	  num_levels_converted * 100 / num_levels_handled : 0));
+  printf_line("-", 79);
+  printf("Summary (for automatic parsing by scripts):\n");
+  printf("LEVELDIR '%s', CONVERTED %d/%d (%d%%)",
+	 convert_leveldir->identifier, num_levels_converted,
+	 num_levels_handled,
+	 (num_levels_handled ?
+	  num_levels_converted * 100 / num_levels_handled : 0));
+
+  if (num_levels_handled != num_levels_converted)
+  {
+    printf(", FAILED:");
+    for (i = 0; i < MAX_NUM_CONVERT_LEVELS; i++)
+      if (levels_failed[i])
+	printf(" %03d", i);
+  }
+
+  printf("\n");
+  printf_line("=", 79);
+
+  CloseAllAndExit(0);
+}