+ if (level.file_version < FILE_VERSION_1_2)
+ {
+ /* level files from versions before 1.2.0 without chunk structure */
+ LoadLevel_HEAD(file, LEVEL_HEADER_SIZE, &level);
+ LoadLevel_BODY(file, level.fieldx * level.fieldy, &level);
+ }
+ else
+ {
+ static struct
+ {
+ char *name;
+ int size;
+ int (*loader)(FILE *, int, struct LevelInfo *);
+ }
+ chunk_info[] =
+ {
+ { "VERS", FILE_VERS_CHUNK_SIZE, LoadLevel_VERS },
+ { "HEAD", LEVEL_HEADER_SIZE, LoadLevel_HEAD },
+ { "AUTH", MAX_LEVEL_AUTHOR_LEN, LoadLevel_AUTH },
+ { "CONT", -1, LoadLevel_CONT },
+ { "BODY", -1, LoadLevel_BODY },
+ { "CNT2", LEVEL_CHUNK_CNT2_SIZE, LoadLevel_CNT2 },
+ { NULL, 0, NULL }
+ };
+
+ while (getFileChunkBE(file, chunk_name, &chunk_size))
+ {
+ int i = 0;
+
+ while (chunk_info[i].name != NULL &&
+ strcmp(chunk_name, chunk_info[i].name) != 0)
+ i++;
+
+ if (chunk_info[i].name == NULL)
+ {
+ Error(ERR_WARN, "unknown chunk '%s' in level file '%s'",
+ chunk_name, filename);
+ ReadUnusedBytesFromFile(file, chunk_size);
+ }
+ else if (chunk_info[i].size != -1 &&
+ chunk_info[i].size != chunk_size)
+ {
+ Error(ERR_WARN, "wrong size (%d) of chunk '%s' in level file '%s'",
+ chunk_size, chunk_name, filename);
+ ReadUnusedBytesFromFile(file, chunk_size);
+ }
+ else
+ {
+ /* call function to load this level chunk */
+ int chunk_size_expected =
+ (chunk_info[i].loader)(file, chunk_size, &level);
+
+ /* the size of some chunks cannot be checked before reading other
+ chunks first (like "HEAD" and "BODY") that contain some header
+ information, so check them here */
+ if (chunk_size_expected != chunk_size)
+ {
+ Error(ERR_WARN, "wrong size (%d) of chunk '%s' in level file '%s'",
+ chunk_size, chunk_name, filename);
+ }
+ }
+ }
+ }
+
+ fclose(file);
+
+ if (leveldir_current == NULL) /* only when dumping level */
+ return;
+
+ if (IS_LEVELCLASS_CONTRIBUTION(leveldir_current) ||
+ IS_LEVELCLASS_USER(leveldir_current))
+ {
+ /* For user contributed and private levels, use the version of
+ the game engine the levels were created for.
+ Since 2.0.1, the game engine version is now directly stored
+ in the level file (chunk "VERS"), so there is no need anymore
+ to set the game version from the file version (except for old,
+ pre-2.0 levels, where the game version is still taken from the
+ file format version used to store the level -- see above). */
+
+ /* do some special adjustments to support older level versions */
+ if (level.file_version == FILE_VERSION_1_0)
+ {
+ Error(ERR_WARN, "level file '%s' has version number 1.0", filename);
+ Error(ERR_WARN, "using high speed movement for player");
+
+ /* 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
+ {
+ /* Always use the latest version of the game engine for all but
+ user contributed and private levels; this allows for actual
+ corrections in the game engine to take effect for existing,
+ converted levels (from "classic" or other existing games) to
+ make the game emulation more accurate, while (hopefully) not
+ breaking existing levels created from other players. */
+
+ level.game_version = GAME_VERSION_ACTUAL;
+
+ /* Set special EM style gems behaviour: EM style gems slip down from
+ normal, steel and growing wall. As this is a more fundamental change,
+ it seems better to set the default behaviour to "off" (as it is more
+ natural) and make it configurable in the level editor (as a property
+ of gem style elements). Already existing converted levels (neither
+ private nor contributed levels) are changed to the new behaviour. */
+
+ if (level.file_version < FILE_VERSION_2_0)
+ level.em_slippery_gems = TRUE;
+ }
+
+ /* determine border element for this level */
+ SetBorderElement();
+}
+
+void LoadLevel(int level_nr)
+{
+ char *filename = getLevelFilename(level_nr);
+
+ LoadLevelFromFilename(filename);
+}
+
+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;
+
+ fputc(level->fieldx, file);
+ fputc(level->fieldy, file);
+
+ putFile16BitBE(file, level->time);
+ putFile16BitBE(file, level->gems_needed);
+
+ for(i=0; i<MAX_LEVEL_NAME_LEN; i++)
+ fputc(level->name[i], file);
+
+ for(i=0; i<LEVEL_SCORE_ELEMENTS; i++)
+ fputc(level->score[i], file);
+
+ for(i=0; i<STD_ELEMENT_CONTENTS; i++)
+ for(y=0; y<3; y++)
+ for(x=0; x<3; x++)
+ fputc((level->encoding_16bit_yamyam ? EL_EMPTY :
+ level->yam_content[i][x][y]),
+ file);
+ fputc(level->amoeba_speed, file);
+ fputc(level->time_magic_wall, file);
+ fputc(level->time_wheel, file);
+ fputc((level->encoding_16bit_amoeba ? EL_EMPTY : level->amoeba_content),
+ file);
+ fputc((level->double_speed ? 1 : 0), file);
+ fputc((level->gravity ? 1 : 0), file);
+ fputc((level->encoding_16bit_field ? 1 : 0), file);
+ fputc((level->em_slippery_gems ? 1 : 0), file);
+
+ WriteUnusedBytesToFile(file, LEVEL_HEADER_UNUSED);
+}
+
+static void SaveLevel_AUTH(FILE *file, struct LevelInfo *level)
+{
+ int i;
+
+ for(i=0; i<MAX_LEVEL_AUTHOR_LEN; i++)
+ fputc(level->author[i], file);
+}
+
+#if 0
+static void SaveLevel_CONT(FILE *file, struct LevelInfo *level)
+{
+ int i, x, y;
+
+ fputc(EL_YAMYAM, file);
+ fputc(level->num_yam_contents, file);
+ fputc(0, file);
+ fputc(0, file);
+
+ for(i=0; i<MAX_ELEMENT_CONTENTS; i++)
+ for(y=0; y<3; y++)
+ for(x=0; x<3; x++)
+ if (level->encoding_16bit_field)
+ putFile16BitBE(file, level->yam_content[i][x][y]);
+ else
+ fputc(level->yam_content[i][x][y], file);
+}
+#endif
+
+static void SaveLevel_BODY(FILE *file, struct LevelInfo *level)
+{
+ int x, y;
+
+ for(y=0; y<level->fieldy; y++)
+ for(x=0; x<level->fieldx; x++)
+ if (level->encoding_16bit_field)
+ putFile16BitBE(file, Ur[x][y]);
+ else
+ fputc(Ur[x][y], file);
+}
+
+static void SaveLevel_CNT2(FILE *file, struct LevelInfo *level, int element)
+{
+ int i, x, y;
+ int num_contents, content_xsize, content_ysize;
+ int content_array[MAX_ELEMENT_CONTENTS][3][3];
+
+ if (element == EL_YAMYAM)
+ {
+ num_contents = level->num_yam_contents;
+ content_xsize = 3;
+ content_ysize = 3;
+
+ for(i=0; i<MAX_ELEMENT_CONTENTS; i++)
+ for(y=0; y<3; y++)
+ for(x=0; x<3; x++)
+ content_array[i][x][y] = level->yam_content[i][x][y];
+ }
+ else if (element == EL_BD_AMOEBA)
+ {
+ num_contents = 1;
+ content_xsize = 1;
+ content_ysize = 1;
+
+ for(i=0; i<MAX_ELEMENT_CONTENTS; i++)
+ for(y=0; y<3; y++)
+ for(x=0; x<3; x++)
+ content_array[i][x][y] = EL_EMPTY;
+ content_array[0][0][0] = level->amoeba_content;
+ }
+ else
+ {
+ /* chunk header already written -- write empty chunk data */
+ WriteUnusedBytesToFile(file, LEVEL_CHUNK_CNT2_SIZE);
+
+ Error(ERR_WARN, "cannot save content for element '%d'", element);
+ return;
+ }
+
+ putFile16BitBE(file, element);
+ fputc(num_contents, file);
+ fputc(content_xsize, file);
+ fputc(content_ysize, file);
+
+ WriteUnusedBytesToFile(file, LEVEL_CHUNK_CNT2_UNUSED);
+
+ for(i=0; i<MAX_ELEMENT_CONTENTS; i++)
+ for(y=0; y<3; y++)
+ for(x=0; x<3; x++)
+ putFile16BitBE(file, content_array[i][x][y]);
+}
+
+void SaveLevel(int level_nr)
+{
+ int i, x, y;
+ char *filename = getLevelFilename(level_nr);
+ int body_chunk_size;
+ FILE *file;
+
+ if (!(file = fopen(filename, MODE_WRITE)))
+ {
+ Error(ERR_WARN, "cannot save level file '%s'", filename);
+ 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;
+ for(y=0; y<level.fieldy; y++)
+ for(x=0; x<level.fieldx; x++)
+ if (Ur[x][y] > 255)
+ level.encoding_16bit_field = TRUE;
+
+ /* check yamyam content for 16-bit elements */
+ level.encoding_16bit_yamyam = FALSE;
+ for(i=0; i<level.num_yam_contents; i++)
+ for(y=0; y<3; y++)
+ for(x=0; x<3; x++)
+ if (level.yam_content[i][x][y] > 255)
+ level.encoding_16bit_yamyam = TRUE;
+
+ /* check amoeba content for 16-bit elements */
+ level.encoding_16bit_amoeba = FALSE;
+ if (level.amoeba_content > 255)
+ level.encoding_16bit_amoeba = TRUE;
+
+ body_chunk_size =
+ level.fieldx * level.fieldy * (level.encoding_16bit_field ? 2 : 1);
+
+ putFileChunkBE(file, "RND1", CHUNK_SIZE_UNDEFINED);
+ putFileChunkBE(file, "CAVE", CHUNK_SIZE_NONE);
+
+ putFileChunkBE(file, "VERS", FILE_VERS_CHUNK_SIZE);
+ SaveLevel_VERS(file, &level);
+
+ putFileChunkBE(file, "HEAD", LEVEL_HEADER_SIZE);
+ SaveLevel_HEAD(file, &level);
+
+ putFileChunkBE(file, "AUTH", MAX_LEVEL_AUTHOR_LEN);
+ SaveLevel_AUTH(file, &level);
+
+ putFileChunkBE(file, "BODY", body_chunk_size);
+ SaveLevel_BODY(file, &level);
+
+ if (level.encoding_16bit_yamyam ||
+ level.num_yam_contents != STD_ELEMENT_CONTENTS)
+ {
+ putFileChunkBE(file, "CNT2", LEVEL_CHUNK_CNT2_SIZE);
+ SaveLevel_CNT2(file, &level, EL_YAMYAM);
+ }
+
+ if (level.encoding_16bit_amoeba)
+ {
+ putFileChunkBE(file, "CNT2", LEVEL_CHUNK_CNT2_SIZE);
+ SaveLevel_CNT2(file, &level, EL_BD_AMOEBA);
+ }
+
+ fclose(file);
+
+ SetFilePermissions(filename, PERMS_PRIVATE);
+}
+
+void DumpLevel(struct LevelInfo *level)
+{
+ printf_line("-", 79);
+ printf("Level xxx (file version %06d, game version %06d)\n",
+ level->file_version, level->game_version);
+ printf_line("-", 79);
+
+ printf("Level Author: '%s'\n", level->author);
+ printf("Level Title: '%s'\n", level->name);
+ printf("\n");
+ printf("Playfield Size: %d x %d\n", level->fieldx, level->fieldy);
+ printf("\n");
+ printf("Level Time: %d seconds\n", level->time);
+ printf("Gems needed: %d\n", level->gems_needed);
+ printf("\n");
+ printf("Time for Magic Wall: %d seconds\n", level->time_magic_wall);
+ printf("Time for Wheel: %d seconds\n", level->time_wheel);
+ printf("Time for Light: %d seconds\n", level->time_light);
+ printf("Time for Timegate: %d seconds\n", level->time_timegate);
+ printf("\n");
+ printf("Amoeba Speed: %d\n", level->amoeba_speed);
+ printf("\n");
+ printf("Gravity: %s\n", (level->gravity ? "yes" : "no"));
+ printf("Double Speed Movement: %s\n", (level->double_speed ? "yes" : "no"));
+ printf("EM style slippery gems: %s\n", (level->em_slippery_gems ? "yes" : "no"));
+
+ printf_line("-", 79);
+}
+
+
+/* ========================================================================= */
+/* tape file functions */
+/* ========================================================================= */
+
+static void setTapeInfoToDefaults()
+{
+ int i;
+
+ /* always start with reliable default values (empty tape) */
+ TapeErase();
+
+ /* default values (also for pre-1.2 tapes) with only the first player */
+ tape.player_participates[0] = TRUE;
+ for(i=1; i<MAX_PLAYERS; i++)
+ tape.player_participates[i] = FALSE;
+
+ /* at least one (default: the first) player participates in every tape */
+ tape.num_participating_players = 1;
+
+ tape.level_nr = level_nr;
+ tape.counter = 0;
+ tape.changed = FALSE;
+
+ tape.recording = FALSE;
+ tape.playing = FALSE;
+ tape.pausing = FALSE;
+}
+
+static int LoadTape_VERS(FILE *file, int chunk_size, struct TapeInfo *tape)
+{
+ tape->file_version = getFileVersion(file);
+ tape->game_version = getFileVersion(file);
+
+ return chunk_size;
+}
+
+static int LoadTape_HEAD(FILE *file, int chunk_size, struct TapeInfo *tape)
+{
+ int i;
+
+ tape->random_seed = getFile32BitBE(file);
+ tape->date = getFile32BitBE(file);
+ tape->length = getFile32BitBE(file);
+
+ /* read header fields that are new since version 1.2 */
+ if (tape->file_version >= FILE_VERSION_1_2)
+ {
+ byte store_participating_players = fgetc(file);
+ int engine_version;
+
+ /* since version 1.2, tapes store which players participate in the tape */
+ tape->num_participating_players = 0;
+ for(i=0; i<MAX_PLAYERS; i++)
+ {
+ tape->player_participates[i] = FALSE;
+
+ if (store_participating_players & (1 << i))
+ {
+ tape->player_participates[i] = TRUE;
+ 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;
+}
+
+static int LoadTape_BODY(FILE *file, int chunk_size, struct TapeInfo *tape)
+{
+ int i, j;
+ int chunk_size_expected =
+ (tape->num_participating_players + 1) * tape->length;
+
+ if (chunk_size_expected != chunk_size)
+ {
+ ReadUnusedBytesFromFile(file, chunk_size);
+ return chunk_size_expected;
+ }
+
+ for(i=0; i<tape->length; i++)