rnd-20020803-1-src

[rocksndiamonds.git] / src / files.c

diff --git a/src/files.c b/src/files.c
index 4de97c6c89736aeba2381600806ef3fae9fe8d85..58cc705c9c1c6f227ca7df73e3ad9065d5cda033 100644 (file)
--- a/src/files.c
+++ b/src/files.c
@@ -1,7 +1,7 @@
 /***********************************************************
 * Rocks'n'Diamonds -- McDuffin Strikes Back!               *
 *----------------------------------------------------------*
-* (c) 1995-2001 Artsoft Entertainment                      *
+* (c) 1995-2002 Artsoft Entertainment                      *
 *               Holger Schemel                             *
 *               Detmolder Strasse 189                      *
 *               33604 Bielefeld                            *
@@ -30,7 +30,7 @@
 #define LEVEL_CHUNK_CNT2_SIZE  160     /* size of level CNT2 chunk   */
 #define LEVEL_CHUNK_CNT2_UNUSED        11      /* unused CNT2 chunk bytes    */
 #define TAPE_HEADER_SIZE       20      /* size of tape file header   */
-#define TAPE_HEADER_UNUSED     7       /* unused tape header bytes   */
+#define TAPE_HEADER_UNUSED     3       /* unused tape header bytes   */
 
 /* file identifier strings */
 #define LEVEL_COOKIE_TMPL      "ROCKSNDIAMONDS_LEVEL_FILE_VERSION_x.x"
@@ -140,7 +140,8 @@ static int checkLevelElement(int element)
 
 static int LoadLevel_VERS(FILE *file, int chunk_size, struct LevelInfo *level)
 {
-  ReadChunk_VERS(file, &(level->file_version), &(level->game_version));
+  level->file_version = getFileVersion(file);
+  level->game_version = getFileVersion(file);
 
   return chunk_size;
 }
@@ -444,6 +445,10 @@ void LoadLevel(int level_nr)
       /* player was faster than monsters in (pre-)1.0 levels */
       level.double_speed = TRUE;
     }
+
+    /* Default behaviour for EM style gems was "slippery" only in 2.0.1 */
+    if (level.game_version == VERSION_IDENT(2,0,1))
+      level.em_slippery_gems = TRUE;
   }
   else
   {
@@ -471,6 +476,12 @@ void LoadLevel(int level_nr)
   SetBorderElement();
 }
 
+static void SaveLevel_VERS(FILE *file, struct LevelInfo *level)
+{
+  putFileVersion(file, level->file_version);
+  putFileVersion(file, level->game_version);
+}
+
 static void SaveLevel_HEAD(FILE *file, struct LevelInfo *level)
 {
   int i, x, y;
@@ -610,6 +621,8 @@ void SaveLevel(int level_nr)
     return;
   }
 
+  level.file_version = FILE_VERSION_ACTUAL;
+  level.game_version = GAME_VERSION_ACTUAL;
 
   /* check level field for 16-bit elements */
   level.encoding_16bit_field = FALSE;
@@ -638,7 +651,7 @@ void SaveLevel(int level_nr)
   putFileChunkBE(file, "CAVE", CHUNK_SIZE_NONE);
 
   putFileChunkBE(file, "VERS", FILE_VERS_CHUNK_SIZE);
-  WriteChunk_VERS(file, FILE_VERSION_ACTUAL, GAME_VERSION_ACTUAL);
+  SaveLevel_VERS(file, &level);
 
   putFileChunkBE(file, "HEAD", LEVEL_HEADER_SIZE);
   SaveLevel_HEAD(file, &level);
@@ -677,8 +690,6 @@ static void setTapeInfoToDefaults()
   int i;
 
   /* always start with reliable default values (empty tape) */
-  tape.file_version = FILE_VERSION_ACTUAL;
-  tape.game_version = GAME_VERSION_ACTUAL;
   TapeErase();
 
   /* default values (also for pre-1.2 tapes) with only the first player */
@@ -700,7 +711,8 @@ static void setTapeInfoToDefaults()
 
 static int LoadTape_VERS(FILE *file, int chunk_size, struct TapeInfo *tape)
 {
-  ReadChunk_VERS(file, &(tape->file_version), &(tape->game_version));
+  tape->file_version = getFileVersion(file);
+  tape->game_version = getFileVersion(file);
 
   return chunk_size;
 }
@@ -717,8 +729,7 @@ static int LoadTape_HEAD(FILE *file, int chunk_size, struct TapeInfo *tape)
   if (tape->file_version >= FILE_VERSION_1_2)
   {
     byte store_participating_players = fgetc(file);
-
-    ReadUnusedBytesFromFile(file, TAPE_HEADER_UNUSED);
+    int engine_version;
 
     /* since version 1.2, tapes store which players participate in the tape */
     tape->num_participating_players = 0;
@@ -732,6 +743,12 @@ static int LoadTape_HEAD(FILE *file, int chunk_size, struct TapeInfo *tape)
        tape->num_participating_players++;
       }
     }
+
+    ReadUnusedBytesFromFile(file, TAPE_HEADER_UNUSED);
+
+    engine_version = getFileVersion(file);
+    if (engine_version > 0)
+      tape->engine_version = engine_version;
   }
 
   return chunk_size;
@@ -939,6 +956,12 @@ void LoadTape(int level_nr)
   tape.length_seconds = GetTapeLength();
 }
 
+static void SaveTape_VERS(FILE *file, struct TapeInfo *tape)
+{
+  putFileVersion(file, tape->file_version);
+  putFileVersion(file, tape->game_version);
+}
+
 static void SaveTape_HEAD(FILE *file, struct TapeInfo *tape)
 {
   int i;
@@ -955,7 +978,10 @@ static void SaveTape_HEAD(FILE *file, struct TapeInfo *tape)
 
   fputc(store_participating_players, file);
 
+  /* unused bytes not at the end here for 4-byte alignment of engine_version */
   WriteUnusedBytesToFile(file, TAPE_HEADER_UNUSED);
+
+  putFileVersion(file, tape->engine_version);
 }
 
 static void SaveTape_BODY(FILE *file, struct TapeInfo *tape)
@@ -997,6 +1023,9 @@ void SaveTape(int level_nr)
     return;
   }
 
+  tape.file_version = FILE_VERSION_ACTUAL;
+  tape.game_version = GAME_VERSION_ACTUAL;
+
   /* count number of participating players  */
   for(i=0; i<MAX_PLAYERS; i++)
     if (tape.player_participates[i])
@@ -1008,7 +1037,7 @@ void SaveTape(int level_nr)
   putFileChunkBE(file, "TAPE", CHUNK_SIZE_NONE);
 
   putFileChunkBE(file, "VERS", FILE_VERS_CHUNK_SIZE);
-  WriteChunk_VERS(file, FILE_VERSION_ACTUAL, GAME_VERSION_ACTUAL);
+  SaveTape_VERS(file, &tape);
 
   putFileChunkBE(file, "HEAD", TAPE_HEADER_SIZE);
   SaveTape_HEAD(file, &tape);
@@ -1038,7 +1067,7 @@ void DumpTape(struct TapeInfo *tape)
 
   printf("\n");
   printf("-------------------------------------------------------------------------------\n");
-  printf("Tape of Level %d (file version %06d, game version %06d\n",
+  printf("Tape of Level %d (file version %06d, game version %06d)\n",
         tape->level_nr, tape->file_version, tape->game_version);
   printf("-------------------------------------------------------------------------------\n");