rnd-20091101-2-src
[rocksndiamonds.git] / src / files.c
index 7a29e1eebac839ff06d01b1bc3a068a3404a3c38..329e4e931187c1eb55abe3cf08d88708a5162c6c 100644 (file)
@@ -182,6 +182,12 @@ static struct LevelFileConfigInfo chunk_config_INFO[] =
     &li.gems_needed,                   0
   },
 
+  {
+    -1,                                        -1,
+    TYPE_INTEGER,                      CONF_VALUE_32_BIT(2),
+    &li.random_seed,                   0
+  },
+
   {
     -1,                                        -1,
     TYPE_BOOLEAN,                      CONF_VALUE_8_BIT(2),
@@ -218,6 +224,12 @@ static struct LevelFileConfigInfo chunk_config_INFO[] =
     &li.dont_collide_with_bits,                ~0      /* default: always deadly */
   },
 
+  {
+    -1,                                        -1,
+    TYPE_BOOLEAN,                      CONF_VALUE_8_BIT(8),
+    &li.em_explodes_by_fire,           FALSE
+  },
+
   {
     -1,                                        -1,
     TYPE_INTEGER,                      CONF_VALUE_16_BIT(5),
@@ -870,8 +882,8 @@ static struct LevelFileConfigInfo chunk_config_CUSX_base[] =
   {
     -1,                                        -1,
     TYPE_ELEMENT,                      CONF_VALUE_16_BIT(1),
-    &xx_ei.gfx_element,                        EL_EMPTY_SPACE,
-    &yy_ei.gfx_element
+    &xx_ei.gfx_element_initial,                EL_EMPTY_SPACE,
+    &yy_ei.gfx_element_initial
   },
 
   {
@@ -1202,7 +1214,7 @@ static struct LevelFileConfigInfo chunk_config_GRPX[] =
   {
     -1,                                        -1,
     TYPE_ELEMENT,                      CONF_VALUE_16_BIT(1),
-    &xx_ei.gfx_element,                        EL_EMPTY_SPACE
+    &xx_ei.gfx_element_initial,                EL_EMPTY_SPACE
   },
 
   {
@@ -1575,8 +1587,10 @@ static void setLevelInfoToDefaults(struct LevelInfo *level)
   *level = li;         /* copy temporary buffer back to level data */
 
   setLevelInfoToDefaults_EM();
+  setLevelInfoToDefaults_SP();
 
   level->native_em_level = &native_em_level;
+  level->native_sp_level = &native_sp_level;
 
   level->file_version = FILE_VERSION_ACTUAL;
   level->game_version = GAME_VERSION_ACTUAL;
@@ -1756,19 +1770,26 @@ static char *getLevelFilenameFromBasename(char *basename)
 
 static int getFileTypeFromBasename(char *basename)
 {
+  /* !!! ALSO SEE COMMENT IN checkForPackageFromBasename() !!! */
+
   static char *filename = NULL;
   struct stat file_status;
 
   /* ---------- try to determine file type from filename ---------- */
 
   /* check for typical filename of a Supaplex level package file */
+#if 1
+  if (strlen(basename) == 10 && strPrefixLower(basename, "levels.d"))
+    return LEVEL_FILE_TYPE_SP;
+#else
   if (strlen(basename) == 10 && (strncmp(basename, "levels.d", 8) == 0 ||
                                 strncmp(basename, "LEVELS.D", 8) == 0))
     return LEVEL_FILE_TYPE_SP;
+#endif
 
   /* check for typical filename of a Diamond Caves II level package file */
-  if (strSuffix(basename, ".dc") ||
-      strSuffix(basename, ".dc2"))
+  if (strSuffixLower(basename, ".dc") ||
+      strSuffixLower(basename, ".dc2"))
     return LEVEL_FILE_TYPE_DC;
 
   /* ---------- try to determine file type from filesize ---------- */
@@ -1786,6 +1807,14 @@ static int getFileTypeFromBasename(char *basename)
   return LEVEL_FILE_TYPE_UNKNOWN;
 }
 
+static boolean checkForPackageFromBasename(char *basename)
+{
+  /* !!! WON'T WORK ANYMORE IF getFileTypeFromBasename() ALSO DETECTS !!!
+     !!! SINGLE LEVELS (CURRENTLY ONLY DETECTS LEVEL PACKAGES         !!! */
+
+  return (getFileTypeFromBasename(basename) != LEVEL_FILE_TYPE_UNKNOWN);
+}
+
 static char *getSingleLevelBasename(int nr)
 {
   static char basename[MAX_FILENAME_LEN];
@@ -1939,6 +1968,9 @@ static void determineLevelFileInfo_Filename(struct LevelFileInfo *lfi)
 
     setLevelFileInfo_FormatLevelFilename(lfi, filetype,
                                         leveldir_current->level_filename, nr);
+
+    lfi->packed = checkForPackageFromBasename(leveldir_current->level_filename);
+
     if (fileExists(lfi->filename))
       return;
   }
@@ -2023,6 +2055,7 @@ int getMappedElement(int element)
 
     case EL_KEY_OBSOLETE:
       element = EL_KEY_1;
+      break;
 
     case EL_EM_KEY_1_FILE_OBSOLETE:
       element = EL_EM_KEY_1;
@@ -2428,7 +2461,7 @@ static int LoadLevel_CUS3(FILE *file, int chunk_size, struct LevelInfo *level)
     ReadUnusedBytesFromFile(file, 7);
 
     ei->use_gfx_element = getFile8Bit(file);
-    ei->gfx_element = getMappedElement(getFile16BitBE(file));
+    ei->gfx_element_initial = getMappedElement(getFile16BitBE(file));
 
     ei->collect_score_initial = getFile8Bit(file);
     ei->collect_count_initial = getFile8Bit(file);
@@ -2527,7 +2560,7 @@ static int LoadLevel_CUS4(FILE *file, int chunk_size, struct LevelInfo *level)
   ei->use_last_ce_value = getFile8Bit(file);
 
   ei->use_gfx_element = getFile8Bit(file);
-  ei->gfx_element = getMappedElement(getFile16BitBE(file));
+  ei->gfx_element_initial = getMappedElement(getFile16BitBE(file));
 
   ei->collect_score_initial = getFile8Bit(file);
   ei->collect_count_initial = getFile8Bit(file);
@@ -2660,7 +2693,7 @@ static int LoadLevel_GRP1(FILE *file, int chunk_size, struct LevelInfo *level)
   group->num_elements = getFile8Bit(file);
 
   ei->use_gfx_element = getFile8Bit(file);
-  ei->gfx_element = getMappedElement(getFile16BitBE(file));
+  ei->gfx_element_initial = getMappedElement(getFile16BitBE(file));
 
   group->choice_mode = getFile8Bit(file);
 
@@ -3786,30 +3819,13 @@ void CopyNativeLevel_EM_to_RND(struct LevelInfo *level)
   }
 }
 
-static void LoadLevelFromFileInfo_EM(struct LevelInfo *level,
-                                    struct LevelFileInfo *level_file_info)
-{
-  if (!LoadNativeLevel_EM(level_file_info->filename))
-    level->no_valid_file = TRUE;
-}
-
-void CopyNativeLevel_RND_to_Native(struct LevelInfo *level)
-{
-  if (level->game_engine_type == GAME_ENGINE_TYPE_EM)
-    CopyNativeLevel_RND_to_EM(level);
-}
-
-void CopyNativeLevel_Native_to_RND(struct LevelInfo *level)
-{
-  if (level->game_engine_type == GAME_ENGINE_TYPE_EM)
-    CopyNativeLevel_EM_to_RND(level);
-}
-
 
 /* ------------------------------------------------------------------------- */
 /* functions for loading SP level                                            */
 /* ------------------------------------------------------------------------- */
 
+#if 0
+
 #define NUM_SUPAPLEX_LEVELS_PER_PACKAGE        111
 #define SP_LEVEL_SIZE                  1536
 #define SP_LEVEL_XSIZE                 60
@@ -4000,7 +4016,8 @@ 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)
+  if (level_file_info->packed &&
+      fseek(file, nr * SP_LEVEL_SIZE, SEEK_SET) != 0)
   {
     level->no_valid_file = TRUE;
 
@@ -4154,6 +4171,187 @@ static void LoadLevelFromFileInfo_SP(struct LevelInfo *level,
     *level = multipart_level;
 }
 
+#endif
+
+void CopyNativeLevel_RND_to_SP(struct LevelInfo *level)
+{
+  struct LevelInfo_SP *level_sp = level->native_sp_level;
+  LevelInfoType *header = &level_sp->header;
+  int i, x, y;
+
+  level_sp->width = level->fieldx;
+  level_sp->height = level->fieldy;
+
+  for (x = 0; x < level->fieldx; x++)
+  {
+    for (y = 0; y < level->fieldy; y++)
+    {
+      int element_old = level->field[x][y];
+      int element_new;
+
+      if (element_old >= EL_SP_START &&
+         element_old <= EL_SP_END)
+       element_new = element_old - EL_SP_START;
+      else if (element_old == EL_EMPTY_SPACE)
+       element_new = 0x00;
+      else if (element_old == EL_INVISIBLE_WALL)
+       element_new = 0x28;
+      else
+       element_new = 0x20;     /* map unknown elements to yellow "hardware" */
+
+      level_sp->playfield[x][y] = element_new;
+    }
+  }
+
+  header->InitialGravity = (level->initial_player_gravity[0] ? 1 : 0);
+
+  for (i = 0; i < SP_LEVEL_NAME_LEN; i++)
+    header->LevelTitle[i] = level->name[i];
+  /* !!! NO STRING TERMINATION IN SUPAPLEX VB CODE YET -- FIX THIS !!! */
+
+  header->InfotronsNeeded = level->gems_needed;
+
+  /* !!! ADD SPECIAL PORT DATABASE STUFF !!! */
+}
+
+void CopyNativeLevel_SP_to_RND(struct LevelInfo *level)
+{
+  struct LevelInfo_SP *level_sp = level->native_sp_level;
+  LevelInfoType *header = &level_sp->header;
+  int i, x, y;
+
+  level->fieldx = level_sp->width;
+  level->fieldy = level_sp->height;
+
+  for (x = 0; x < level->fieldx; x++)
+  {
+    for (y = 0; y < level->fieldy; y++)
+    {
+      int element_old = level_sp->playfield[x][y];
+      int element_new;
+
+      if (element_old <= 0x27)
+       element_new = getMappedElement(EL_SP_START + element_old);
+      else if (element_old == 0x28)
+       element_new = EL_INVISIBLE_WALL;
+      else
+      {
+       Error(ERR_WARN, "invalid element %d at position %d, %d",
+             element_old, x, y);
+
+       element_new = EL_UNKNOWN;
+      }
+
+      level->field[x][y] = element_new;
+    }
+  }
+
+  for (i = 0; i < MAX_PLAYERS; i++)
+    level->initial_player_gravity[i] =
+      (header->InitialGravity == 1 ? TRUE : FALSE);
+
+  for (i = 0; i < SP_LEVEL_NAME_LEN; i++)
+    level->name[i] = header->LevelTitle[i];
+  level->name[SP_LEVEL_NAME_LEN] = '\0';
+
+  level->gems_needed = header->InfotronsNeeded;
+
+  for (i = 0; i < header->SpecialPortCount; i++)
+  {
+    SpecialPortType *port = &header->SpecialPort[i];
+    int port_location = port->PortLocation;
+    int gravity = port->Gravity;
+    int port_x, port_y, port_element;
+
+    port_x = (port_location / 2) % level->fieldx;
+    port_y = (port_location / 2) / level->fieldx;
+
+    if (port_x < 0 || port_x >= level->fieldx ||
+       port_y < 0 || port_y >= level->fieldy)
+    {
+      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;
+  }
+
+  /* change special gravity ports without database entries to normal ports */
+  for (x = 0; x < level->fieldx; x++)
+    for (y = 0; y < level->fieldy; y++)
+      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;
+
+  level->time = 0;                     /* no time limit */
+  level->amoeba_speed = 0;
+  level->time_magic_wall = 0;
+  level->time_wheel = 0;
+  level->amoeba_content = EL_EMPTY;
+
+#if 1
+  /* original Supaplex does not use score values -- use default values */
+#else
+  for (i = 0; i < LEVEL_SCORE_ELEMENTS; i++)
+    level->score[i] = 0;
+#endif
+
+  /* there are no yamyams in supaplex levels */
+  for (i = 0; i < level->num_yamyam_contents; i++)
+    for (x = 0; x < 3; x++)
+      for (y = 0; y < 3; y++)
+       level->yamyam_content[i].e[x][y] = EL_EMPTY;
+}
+
+static void setTapeInfoToDefaults();
+
+static void CopyNativeTape_SP_to_RND(struct LevelInfo *level)
+{
+  struct LevelInfo_SP *level_sp = level->native_sp_level;
+  struct DemoInfo_SP *demo = &level_sp->demo;
+  int i;
+
+  /* always start with reliable default values */
+  setTapeInfoToDefaults();
+
+  tape.level_nr = demo->level_nr;      /* (currently not used) */
+  tape.length = demo->length - 1;      /* without "end of demo" byte */
+  tape.random_seed = level_sp->header.DemoRandomSeed;
+
+  // tape.date = <SET FROM FILE DATE OF *.SP FILE>
+
+  for (i = 0; i < demo->length - 1; i++)
+  {
+    int demo_action = demo->data[i] & 0x0f;
+    int demo_repeat = (demo->data[i] & 0xf0) >> 4;
+
+    tape.pos[i].action[0] = map_key_SP_to_RND(demo_action);
+    tape.pos[i].delay = demo_repeat + 1;
+  }
+
+  tape.length_seconds = GetTapeLength();
+}
+
+
+/* ------------------------------------------------------------------------- */
+/* functions for loading DC level                                            */
+/* ------------------------------------------------------------------------- */
 
 #define DC_LEVEL_HEADER_SIZE           344
 
@@ -6124,6 +6322,47 @@ static void LoadLevelFromFileInfo_DC(struct LevelInfo *level,
 #endif
 
 
+/* ------------------------------------------------------------------------- */
+/* functions for handling native levels                                      */
+/* ------------------------------------------------------------------------- */
+
+static void LoadLevelFromFileInfo_EM(struct LevelInfo *level,
+                                    struct LevelFileInfo *level_file_info)
+{
+  if (!LoadNativeLevel_EM(level_file_info->filename))
+    level->no_valid_file = TRUE;
+}
+
+static void LoadLevelFromFileInfo_SP(struct LevelInfo *level,
+                                    struct LevelFileInfo *level_file_info)
+{
+  int pos = 0;
+
+  /* determine position of requested level inside level package */
+  if (level_file_info->packed)
+    pos = level_file_info->nr - leveldir_current->first_level;
+
+  if (!LoadNativeLevel_SP(level_file_info->filename, pos))
+    level->no_valid_file = TRUE;
+}
+
+void CopyNativeLevel_RND_to_Native(struct LevelInfo *level)
+{
+  if (level->game_engine_type == GAME_ENGINE_TYPE_EM)
+    CopyNativeLevel_RND_to_EM(level);
+  else if (level->game_engine_type == GAME_ENGINE_TYPE_SP)
+    CopyNativeLevel_RND_to_SP(level);
+}
+
+void CopyNativeLevel_Native_to_RND(struct LevelInfo *level)
+{
+  if (level->game_engine_type == GAME_ENGINE_TYPE_EM)
+    CopyNativeLevel_EM_to_RND(level);
+  else if (level->game_engine_type == GAME_ENGINE_TYPE_SP)
+    CopyNativeLevel_SP_to_RND(level);
+}
+
+
 /* ------------------------------------------------------------------------- */
 /* functions for loading generic level                                       */
 /* ------------------------------------------------------------------------- */
@@ -6147,6 +6386,7 @@ void LoadLevelFromFileInfo(struct LevelInfo *level,
 
     case LEVEL_FILE_TYPE_SP:
       LoadLevelFromFileInfo_SP(level, level_file_info);
+      level->game_engine_type = GAME_ENGINE_TYPE_SP;
       break;
 
     case LEVEL_FILE_TYPE_DC:
@@ -6332,6 +6572,32 @@ static void LoadLevel_InitVersion(struct LevelInfo *level, char *filename)
       change->target_element = EL_PLAYER_1;
   }
 
+#if 1
+  /* try to detect and fix "Zelda" style levels, which are broken with 3.2.5 */
+  if (level->game_version < VERSION_IDENT(3,2,5,0))
+  {
+    /* This is needed to fix a problem that was caused by a bugfix in function
+       game.c/CheckTriggeredElementChangeExt() introduced with 3.2.5 that
+       corrects the behaviour when a custom element changes to another custom
+       element with a higher element number that has change actions defined.
+       Normally, only one change per frame is allowed for custom elements.
+       Therefore, it is checked if a custom element already changed in the
+       current frame; if it did, subsequent changes are suppressed.
+       Unfortunately, this is only checked for element changes, but not for
+       change actions, which are still executed. As the function above loops
+       through all custom elements from lower to higher, an element change
+       resulting in a lower CE number won't be checked again, while a target
+       element with a higher number will also be checked, and potential change
+       actions will get executed for this CE, too (which is wrong), while
+       further changes are ignored (which is correct). As this bugfix breaks
+       Zelda II (and introduces graphical bugs to Zelda I, and also breaks a
+       few other levels like Alan Bond's "FMV"), allow the previous, incorrect
+       behaviour for existing levels and tapes that make use of this bug */
+
+    level->use_action_after_change_bug = TRUE;
+  }
+#else
+  /* !!! THIS DOES NOT FIX "Zelda I" (GRAPHICALLY) AND "Alan's FMV" LEVELS */
   /* try to detect and fix "Zelda II" levels, which are broken with 3.2.5 */
   {
     int element = EL_CUSTOM_16;
@@ -6358,10 +6624,15 @@ static void LoadLevel_InitVersion(struct LevelInfo *level, char *filename)
        strncmp(ei->description, "scanline - row 1", 16) == 0)
       level->use_action_after_change_bug = TRUE;
   }
+#endif
 
   /* not centering level after relocating player was default only in 3.2.3 */
   if (level->game_version == VERSION_IDENT(3,2,3,0))   /* (no pre-releases) */
     level->shifted_relocation = TRUE;
+
+  /* EM style elements always chain-exploded in R'n'D engine before 3.2.6 */
+  if (level->game_version < VERSION_IDENT(3,2,6,0))
+    level->em_explodes_by_fire = TRUE;
 }
 
 static void LoadLevel_InitElements(struct LevelInfo *level, char *filename)
@@ -6493,6 +6764,7 @@ static void LoadLevel_InitElements(struct LevelInfo *level, char *filename)
   /* initialize element properties for level editor etc. */
   InitElementPropertiesEngine(level->game_version);
   InitElementPropertiesAfterLoading(level->game_version);
+  InitElementPropertiesGfxElement();
 }
 
 static void LoadLevel_InitPlayfield(struct LevelInfo *level, char *filename)
@@ -6871,7 +7143,7 @@ static void SaveLevel_CUS3(FILE *file, struct LevelInfo *level,
        WriteUnusedBytesToFile(file, 7);
 
        putFile8Bit(file, ei->use_gfx_element);
-       putFile16BitBE(file, ei->gfx_element);
+       putFile16BitBE(file, ei->gfx_element_initial);
 
        putFile8Bit(file, ei->collect_score_initial);
        putFile8Bit(file, ei->collect_count_initial);
@@ -6950,7 +7222,7 @@ static void SaveLevel_CUS4(FILE *file, struct LevelInfo *level, int element)
   putFile8Bit(file, ei->use_last_ce_value);
 
   putFile8Bit(file, ei->use_gfx_element);
-  putFile16BitBE(file, ei->gfx_element);
+  putFile16BitBE(file, ei->gfx_element_initial);
 
   putFile8Bit(file, ei->collect_score_initial);
   putFile8Bit(file, ei->collect_count_initial);
@@ -7061,7 +7333,7 @@ static void SaveLevel_GRP1(FILE *file, struct LevelInfo *level, int element)
   putFile8Bit(file, group->num_elements);
 
   putFile8Bit(file, ei->use_gfx_element);
-  putFile16BitBE(file, ei->gfx_element);
+  putFile16BitBE(file, ei->gfx_element_initial);
 
   putFile8Bit(file, group->choice_mode);
 
@@ -7793,6 +8065,13 @@ void LoadSolutionTape(int nr)
   char *filename = getSolutionTapeFilename(nr);
 
   LoadTapeFromFilename(filename);
+
+#if 1
+  if (TAPE_IS_EMPTY(tape) &&
+      level.game_engine_type == GAME_ENGINE_TYPE_SP &&
+      level.native_sp_level->demo.is_available)
+    CopyNativeTape_SP_to_RND(&level);
+#endif
 }
 
 static void SaveTape_VERS(FILE *file, struct TapeInfo *tape)
@@ -9850,6 +10129,8 @@ void CreateLevelSketchImages()
   Bitmap *bitmap2;
   int i;
 
+  InitElementPropertiesGfxElement();
+
   bitmap1 = CreateBitmap(TILEX, TILEY, DEFAULT_DEPTH);
   bitmap2 = CreateBitmap(MINI_TILEX, MINI_TILEY, DEFAULT_DEPTH);
 
@@ -9857,7 +10138,8 @@ void CreateLevelSketchImages()
   {
     Bitmap *src_bitmap;
     int src_x, src_y;
-    int graphic = el2edimg(i);
+    int element = getMappedElement(i);
+    int graphic = el2edimg(element);
     char basename1[16];
     char basename2[16];
     char *filename1;