+ 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] =
+ checkLevelElement(getFile16BitInteger(file, BYTE_ORDER_BIG_ENDIAN));
+
+ /* correct invalid number of content fields -- should never happen */
+ if (num_contents < 1 || num_contents > MAX_ELEMENT_CONTENTS)
+ num_contents = STD_ELEMENT_CONTENTS;
+
+ if (element == EL_MAMPFER)
+ {
+ level->num_yam_contents = num_contents;
+
+ for(i=0; i<num_contents; i++)
+ for(y=0; y<3; y++)
+ for(x=0; x<3; x++)
+ level->yam_content[i][x][y] = content_array[i][x][y];
+ }
+ else if (element == EL_AMOEBE_BD)
+ {
+ level->amoeba_content = content_array[0][0][0];
+ }
+ else
+ {
+ Error(ERR_WARN, "cannot load content for element '%d'", element);
+ }
+
+ return chunk_size;
+}
+
+void LoadLevel(int level_nr)
+{
+ char *filename = getLevelFilename(level_nr);
+ char cookie[MAX_LINE_LEN];
+ char chunk_name[CHUNK_ID_LEN + 1];
+ int chunk_size;
+ FILE *file;
+
+ /* always start with reliable default values */
+ setLevelInfoToDefaults();
+
+ if (!(file = fopen(filename, MODE_READ)))
+ {
+ Error(ERR_WARN, "cannot read level '%s' - creating new level", filename);
+ return;
+ }
+
+ /* check file identifier */
+ fgets(cookie, MAX_LINE_LEN, file);
+ if (strlen(cookie) > 0 && cookie[strlen(cookie) - 1] == '\n')
+ cookie[strlen(cookie) - 1] = '\0';
+
+ if (!checkCookieString(cookie, LEVEL_COOKIE)) /* unknown file format */
+ {
+ Error(ERR_WARN, "unknown format of level file '%s'", filename);
+ fclose(file);
+ return;
+ }
+
+ if ((level.file_version = getFileVersionFromCookieString(cookie)) == -1)
+ {
+ Error(ERR_WARN, "unsupported version of level file '%s'", filename);
+ fclose(file);
+ return;
+ }
+
+ if (level.file_version < FILE_VERSION_1_2)
+ {
+ /* level files from versions before 1.2.0 without chunk structure */
+ LoadLevel_HEAD(&level, file, LEVEL_HEADER_SIZE);
+ LoadLevel_BODY(&level, file, level.fieldx * level.fieldy);
+ }
+ else
+ {
+ static struct
+ {
+ char *name;
+ int size;
+ int (*loader)(struct LevelInfo *, FILE *, int);
+ }
+ chunk_info[] =
+ {
+ { "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 (getFileChunk(file, chunk_name, &chunk_size, BYTE_ORDER_BIG_ENDIAN))
+ {
+ 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)(&level, file, chunk_size);
+
+ /* 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 (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 */
+ level.game_version = level.file_version;
+
+ /* player was faster than monsters in pre-1.0 levels */
+ 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");
+ level.double_speed = TRUE;
+ }
+ }
+ else
+ {
+ /* always use the latest version of the game engine for all but
+ user contributed and private levels */
+ level.game_version = GAME_VERSION_ACTUAL;
+ }
+
+ /* determine border element for this level */
+ SetBorderElement();
+}
+
+void OLD_SaveLevel(int level_nr)
+{
+ int i, x, y;
+ char *filename = getLevelFilename(level_nr);
+#if 0
+ boolean encoding_16bit_amoeba = FALSE;
+ boolean encoding_16bit_yamyam = FALSE;
+#endif
+ boolean encoding_16bit = FALSE; /* default: only 8-bit elements */
+ char *oldest_possible_cookie;
+ FILE *file;
+
+ if (!(file = fopen(filename, MODE_WRITE)))
+ {
+ Error(ERR_WARN, "cannot save level file '%s'", filename);
+ return;
+ }
+
+ /* check yam content for 16-bit elements */
+ for(i=0; i<MAX_ELEMENT_CONTENTS; i++)
+ for(y=0; y<3; y++)
+ for(x=0; x<3; x++)
+ if (level.yam_content[i][x][y] > 255)
+ encoding_16bit = TRUE;
+
+ /* check level field for 16-bit elements */
+ for(y=0; y<lev_fieldy; y++)
+ for(x=0; x<lev_fieldx; x++)
+ if (Ur[x][y] > 255)
+ encoding_16bit = TRUE;
+
+ oldest_possible_cookie = (encoding_16bit ? LEVEL_COOKIE : LEVEL_COOKIE_12);
+
+ fputs(oldest_possible_cookie, file); /* file identifier */
+ fputc('\n', file);
+
+ putFileChunk(file, "HEAD", LEVEL_HEADER_SIZE, BYTE_ORDER_BIG_ENDIAN);
+
+ fputc(level.fieldx, file);
+ fputc(level.fieldy, file);
+
+ putFile16BitInteger(file, level.time, BYTE_ORDER_BIG_ENDIAN);
+ putFile16BitInteger(file, level.gems_needed, BYTE_ORDER_BIG_ENDIAN);
+
+ 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(encoding_16bit ? EL_LEERRAUM : 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.amoeba_content, file);
+ fputc((level.double_speed ? 1 : 0), file);
+ fputc((level.gravity ? 1 : 0), file);
+
+ fputc((encoding_16bit ? 1 : 0), file);
+
+ for(i=0; i<LEVEL_HEADER_UNUSED; i++) /* set unused header bytes to zero */
+ fputc(0, file);
+
+ putFileChunk(file, "AUTH", MAX_LEVEL_AUTHOR_LEN, BYTE_ORDER_BIG_ENDIAN);
+
+ for(i=0; i<MAX_LEVEL_AUTHOR_LEN; i++)
+ fputc(level.author[i], file);
+
+ putFileChunk(file, "CONT", 4 + MAX_ELEMENT_CONTENTS * 3 * 3,
+ BYTE_ORDER_BIG_ENDIAN);
+
+ fputc(EL_MAMPFER, 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 (encoding_16bit)
+ putFile16BitInteger(file, level.yam_content[i][x][y],
+ BYTE_ORDER_BIG_ENDIAN);
+ else
+ fputc(level.yam_content[i][x][y], file);
+
+ putFileChunk(file, "BODY", lev_fieldx * lev_fieldy, BYTE_ORDER_BIG_ENDIAN);
+
+ for(y=0; y<lev_fieldy; y++)
+ for(x=0; x<lev_fieldx; x++)
+ if (encoding_16bit)
+ putFile16BitInteger(file, Ur[x][y], BYTE_ORDER_BIG_ENDIAN);
+ else
+ fputc(Ur[x][y], file);
+
+ fclose(file);
+
+ chmod(filename, LEVEL_PERMS);
+}
+
+static void SaveLevel_HEAD(struct LevelInfo *level, FILE *file)
+{
+ int i, x, y;
+
+ fputc(level->fieldx, file);
+ fputc(level->fieldy, file);
+
+ putFile16BitInteger(file, level->time, BYTE_ORDER_BIG_ENDIAN);
+ putFile16BitInteger(file, level->gems_needed, BYTE_ORDER_BIG_ENDIAN);
+
+ 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_LEERRAUM :
+ 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_LEERRAUM : 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);
+
+ WriteUnusedBytesToFile(file, LEVEL_HEADER_UNUSED);
+}
+
+static void SaveLevel_AUTH(struct LevelInfo *level, FILE *file)
+{
+ int i;
+
+ for(i=0; i<MAX_LEVEL_AUTHOR_LEN; i++)
+ fputc(level->author[i], file);
+}
+
+#if 0
+static void SaveLevel_CONT(struct LevelInfo *level, FILE *file)
+{
+ int i, x, y;
+
+ fputc(EL_MAMPFER, 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)
+ putFile16BitInteger(file, level->yam_content[i][x][y],
+ BYTE_ORDER_BIG_ENDIAN);
+ else
+ fputc(level->yam_content[i][x][y], file);
+}
+#endif
+
+static void SaveLevel_BODY(struct LevelInfo *level, FILE *file)
+{
+ int x, y;
+
+ for(y=0; y<lev_fieldy; y++)
+ for(x=0; x<lev_fieldx; x++)
+ if (level->encoding_16bit_field)
+ putFile16BitInteger(file, Ur[x][y], BYTE_ORDER_BIG_ENDIAN);
+ else
+ fputc(Ur[x][y], file);
+}
+
+static void SaveLevel_CNT2(struct LevelInfo *level, FILE *file, int element)
+{
+ int i, x, y;
+ int num_contents, content_xsize, content_ysize;
+ int content_array[MAX_ELEMENT_CONTENTS][3][3];
+
+ if (element == EL_MAMPFER)
+ {
+ 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_AMOEBE_BD)
+ {
+ 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_LEERRAUM;
+ 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;
+ }
+
+ putFile16BitInteger(file, element, BYTE_ORDER_BIG_ENDIAN);
+ 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++)
+ putFile16BitInteger(file, content_array[i][x][y],
+ BYTE_ORDER_BIG_ENDIAN);
+}
+
+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;
+ }
+
+ /* check level field for 16-bit elements */
+ 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 */
+ 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 */
+ if (level.amoeba_content > 255)
+ level.encoding_16bit_amoeba = TRUE;
+
+ body_chunk_size =
+ level.fieldx * level.fieldy * (level.encoding_16bit_field ? 2 : 1);
+
+ fputs(LEVEL_COOKIE, file); /* file identifier */
+ fputc('\n', file);
+
+ putFileChunk(file, "HEAD", LEVEL_HEADER_SIZE, BYTE_ORDER_BIG_ENDIAN);
+ SaveLevel_HEAD(&level, file);
+
+ putFileChunk(file, "AUTH", MAX_LEVEL_AUTHOR_LEN, BYTE_ORDER_BIG_ENDIAN);
+ SaveLevel_AUTH(&level, file);
+
+#if 0
+ if (level.encoding_16bit_field) /* obsolete since new "CNT2" chunk */
+ {
+ chunk_size = 4 + 2 * (MAX_ELEMENT_CONTENTS * 3 * 3);
+
+ putFileChunk(file, "CONT", chunk_size, BYTE_ORDER_BIG_ENDIAN);
+ SaveLevel_CONT(&level, file);
+ }
+#endif
+
+ putFileChunk(file, "BODY", body_chunk_size, BYTE_ORDER_BIG_ENDIAN);
+ SaveLevel_BODY(&level, file);
+
+ if (level.encoding_16bit_yamyam ||
+ level.num_yam_contents != STD_ELEMENT_CONTENTS)
+ {
+ putFileChunk(file, "CNT2", LEVEL_CHUNK_CNT2_SIZE, BYTE_ORDER_BIG_ENDIAN);
+ SaveLevel_CNT2(&level, file, EL_MAMPFER);
+ }
+
+ if (level.encoding_16bit_amoeba)
+ {
+ putFileChunk(file, "CNT2", LEVEL_CHUNK_CNT2_SIZE, BYTE_ORDER_BIG_ENDIAN);
+ SaveLevel_CNT2(&level, file, EL_AMOEBE_BD);
+ }
+
+ fclose(file);
+
+ chmod(filename, LEVEL_PERMS);
+}
+
+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 */
+ 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;
+}
+
+void OLD_LoadTape(int level_nr)
+{
+ int i, j;
+ char *filename = getTapeFilename(level_nr);
+ char cookie[MAX_LINE_LEN];
+ char chunk_name[CHUNK_ID_LEN + 1];
+ FILE *file;
+ int num_participating_players;
+ int file_version = FILE_VERSION_ACTUAL; /* last version of tape files */
+ int chunk_size;
+
+ /* 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 */
+ 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 */
+ num_participating_players = 1;
+
+ if (!(file = fopen(filename, MODE_READ)))
+ return;
+
+ /* check file identifier */
+ fgets(cookie, MAX_LINE_LEN, file);
+ if (strlen(cookie) > 0 && cookie[strlen(cookie) - 1] == '\n')
+ cookie[strlen(cookie) - 1] = '\0';
+
+#if 0
+ if (strcmp(cookie, TAPE_COOKIE_10) == 0) /* old 1.0 tape format */
+ file_version = FILE_VERSION_1_0;
+ else if (strcmp(cookie, TAPE_COOKIE) != 0) /* unknown tape format */
+ {
+ Error(ERR_WARN, "wrong file identifier of tape file '%s'", filename);
+ fclose(file);
+ return;
+ }
+#else
+ if (!checkCookieString(cookie, TAPE_COOKIE)) /* unknown file format */
+ {
+ Error(ERR_WARN, "unknown format of tape file '%s'", filename);
+ fclose(file);
+ return;
+ }
+
+ file_version = getFileVersionFromCookieString(cookie);
+#endif
+
+ tape.file_version = file_version;
+ tape.game_version = file_version;
+
+ /* read chunk "HEAD" */
+ if (file_version >= FILE_VERSION_1_2)
+ {
+ getFileChunk(file, chunk_name, &chunk_size, BYTE_ORDER_BIG_ENDIAN);
+ if (strcmp(chunk_name, "HEAD") || chunk_size != TAPE_HEADER_SIZE)
+ {
+ Error(ERR_WARN, "wrong 'HEAD' chunk of tape file '%s'", filename);
+ fclose(file);
+ return;
+ }
+ }
+
+ tape.random_seed = getFile32BitInteger(file, BYTE_ORDER_BIG_ENDIAN);
+ tape.date = getFile32BitInteger(file, BYTE_ORDER_BIG_ENDIAN);
+ tape.length = getFile32BitInteger(file, BYTE_ORDER_BIG_ENDIAN);
+
+ /* read header fields that are new since version 1.2 */
+ if (file_version >= FILE_VERSION_1_2)
+ {
+ byte store_participating_players = fgetc(file);
+
+ for(i=0; i<TAPE_HEADER_UNUSED; i++) /* skip unused header bytes */
+ fgetc(file);
+
+ /* since version 1.2, tapes store which players participate in the 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;
+ num_participating_players++;
+ }
+ }
+ }
+
+ tape.level_nr = level_nr;
+ tape.counter = 0;
+ tape.changed = FALSE;
+
+ tape.recording = FALSE;
+ tape.playing = FALSE;
+ tape.pausing = FALSE;
+
+ /* read chunk "BODY" */
+ if (file_version >= FILE_VERSION_1_2)
+ {
+ getFileChunk(file, chunk_name, &chunk_size, BYTE_ORDER_BIG_ENDIAN);
+ if (strcmp(chunk_name, "BODY") ||
+ chunk_size != (num_participating_players + 1) * tape.length)
+ {
+ Error(ERR_WARN, "wrong 'BODY' chunk of tape file '%s'", filename);
+ fclose(file);
+ return;
+ }
+ }
+
+#if DEBUG
+ printf("\nTAPE OF LEVEL %d\n", level_nr);
+#endif
+
+ for(i=0; i<tape.length; i++)
+ {
+ if (i >= MAX_TAPELEN)
+ break;
+
+ for(j=0; j<MAX_PLAYERS; j++)
+ {
+ tape.pos[i].action[j] = MV_NO_MOVING;
+
+ if (tape.player_participates[j])
+ tape.pos[i].action[j] = fgetc(file);
+
+#if DEBUG
+ {
+ int x = tape.pos[i].action[j];
+
+ printf("%d:%02x ", j, x);
+ printf("[%c%c%c%c|%c%c] - ",
+ (x & JOY_LEFT ? '<' : ' '),
+ (x & JOY_RIGHT ? '>' : ' '),
+ (x & JOY_UP ? '^' : ' '),
+ (x & JOY_DOWN ? 'v' : ' '),
+ (x & JOY_BUTTON_1 ? '1' : ' '),
+ (x & JOY_BUTTON_2 ? '2' : ' '));
+ }
+#endif
+
+ }
+
+ tape.pos[i].delay = fgetc(file);
+
+#if DEBUG
+ printf("[%03d]\n", tape.pos[i].delay);
+#endif
+
+ if (file_version == FILE_VERSION_1_0)
+ {
+ /* eliminate possible diagonal moves in old tapes */
+ /* this is only for backward compatibility */
+
+ byte joy_dir[4] = { JOY_LEFT, JOY_RIGHT, JOY_UP, JOY_DOWN };
+ byte action = tape.pos[i].action[0];
+ int k, num_moves = 0;
+
+ for (k=0; k<4; k++)
+ {
+ if (action & joy_dir[k])
+ {
+ tape.pos[i + num_moves].action[0] = joy_dir[k];
+ if (num_moves > 0)
+ tape.pos[i + num_moves].delay = 0;
+ num_moves++;
+ }
+ }
+
+ if (num_moves > 1)
+ {
+ num_moves--;
+ i += num_moves;
+ tape.length += num_moves;
+ }
+ }
+ else if (file_version < FILE_VERSION_2_0)
+ {
+ if (tape.pos[i].delay > 1)
+ {
+ /* action part */
+ tape.pos[i + 1] = tape.pos[i];
+ tape.pos[i + 1].delay = 1;
+
+ /* delay part */
+ for(j=0; j<MAX_PLAYERS; j++)
+ tape.pos[i].action[j] = MV_NO_MOVING;
+ tape.pos[i].delay--;
+
+ i++;
+ tape.length++;
+ }
+ }
+
+ if (feof(file))
+ break;
+ }
+
+ fclose(file);
+
+ if (i != tape.length)
+ Error(ERR_WARN, "level recording file '%s' corrupted", filename);
+
+ tape.length_seconds = GetTapeLength();
+}
+
+static int LoadTape_HEAD(struct TapeInfo *tape, FILE *file, int chunk_size)
+{
+ int i;
+
+ tape->random_seed = getFile32BitInteger(file, BYTE_ORDER_BIG_ENDIAN);
+ tape->date = getFile32BitInteger(file, BYTE_ORDER_BIG_ENDIAN);
+ tape->length = getFile32BitInteger(file, BYTE_ORDER_BIG_ENDIAN);
+
+ /* read header fields that are new since version 1.2 */
+ if (tape->file_version >= FILE_VERSION_1_2)
+ {
+ byte store_participating_players = fgetc(file);
+
+ ReadUnusedBytesFromFile(file, TAPE_HEADER_UNUSED);
+
+ /* 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++;
+ }
+ }
+ }
+
+ return chunk_size;
+}
+
+static int LoadTape_BODY(struct TapeInfo *tape, FILE *file, int chunk_size)
+{
+ 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++)
+ {
+ if (i >= MAX_TAPELEN)
+ break;
+
+ for(j=0; j<MAX_PLAYERS; j++)
+ {
+ tape->pos[i].action[j] = MV_NO_MOVING;
+
+ if (tape->player_participates[j])
+ tape->pos[i].action[j] = fgetc(file);
+ }
+
+ tape->pos[i].delay = fgetc(file);
+
+ if (tape->file_version == FILE_VERSION_1_0)
+ {
+ /* eliminate possible diagonal moves in old tapes */
+ /* this is only for backward compatibility */
+
+ byte joy_dir[4] = { JOY_LEFT, JOY_RIGHT, JOY_UP, JOY_DOWN };
+ byte action = tape->pos[i].action[0];
+ int k, num_moves = 0;
+
+ for (k=0; k<4; k++)
+ {
+ if (action & joy_dir[k])
+ {
+ tape->pos[i + num_moves].action[0] = joy_dir[k];
+ if (num_moves > 0)
+ tape->pos[i + num_moves].delay = 0;
+ num_moves++;
+ }
+ }
+
+ if (num_moves > 1)
+ {
+ num_moves--;
+ i += num_moves;
+ tape->length += num_moves;
+ }
+ }
+ else if (tape->file_version < FILE_VERSION_2_0)
+ {
+ if (tape->pos[i].delay > 1)
+ {
+ /* action part */
+ tape->pos[i + 1] = tape->pos[i];
+ tape->pos[i + 1].delay = 1;
+
+ /* delay part */
+ for(j=0; j<MAX_PLAYERS; j++)
+ tape->pos[i].action[j] = MV_NO_MOVING;
+ tape->pos[i].delay--;
+
+ i++;
+ tape->length++;
+ }
+ }
+
+ if (feof(file))
+ break;
+ }
+
+ if (i != tape->length)
+ chunk_size = (tape->num_participating_players + 1) * i;
+
+ return chunk_size;
+}
+
+void LoadTape(int level_nr)
+{
+ char *filename = getTapeFilename(level_nr);
+ char cookie[MAX_LINE_LEN];
+ char chunk_name[CHUNK_ID_LEN + 1];
+ FILE *file;
+ int chunk_size;
+
+ /* always start with reliable default values */
+ setTapeInfoToDefaults();
+
+ if (!(file = fopen(filename, MODE_READ)))
+ return;
+
+ /* check file identifier */
+ fgets(cookie, MAX_LINE_LEN, file);
+ if (strlen(cookie) > 0 && cookie[strlen(cookie) - 1] == '\n')
+ cookie[strlen(cookie) - 1] = '\0';
+
+ if (!checkCookieString(cookie, TAPE_COOKIE)) /* unknown file format */
+ {
+ Error(ERR_WARN, "unknown format of tape file '%s'", filename);
+ fclose(file);
+ return;
+ }
+
+ if ((tape.file_version = getFileVersionFromCookieString(cookie)) == -1)
+ {
+ Error(ERR_WARN, "unsupported version of tape file '%s'", filename);
+ fclose(file);
+ return;
+ }
+
+ tape.game_version = tape.file_version;
+
+ if (tape.file_version < FILE_VERSION_1_2)
+ {
+ /* tape files from versions before 1.2.0 without chunk structure */
+ LoadTape_HEAD(&tape, file, TAPE_HEADER_SIZE);
+ LoadTape_BODY(&tape, file, 2 * tape.length);
+ }
+ else
+ {
+ static struct
+ {
+ char *name;
+ int size;
+ int (*loader)(struct TapeInfo *, FILE *, int);
+ }
+ chunk_info[] =
+ {
+ { "HEAD", TAPE_HEADER_SIZE, LoadTape_HEAD },
+ { "BODY", -1, LoadTape_BODY },
+ { NULL, 0, NULL }
+ };
+
+ while (getFileChunk(file, chunk_name, &chunk_size, BYTE_ORDER_BIG_ENDIAN))
+ {
+ 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 tape 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 tape file '%s'",
+ chunk_size, chunk_name, filename);
+ ReadUnusedBytesFromFile(file, chunk_size);
+ }
+ else
+ {
+ /* call function to load this tape chunk */
+ int chunk_size_expected =
+ (chunk_info[i].loader)(&tape, file, chunk_size);
+
+ /* 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 tape file '%s'",
+ chunk_size, chunk_name, filename);
+ }
+ }
+ }
+ }
+
+ fclose(file);
+
+ tape.length_seconds = GetTapeLength();
+}
+
+void OLD_SaveTape(int level_nr)
+{
+ int i;
+ char *filename = getTapeFilename(level_nr);
+ FILE *file;
+ boolean new_tape = TRUE;
+ byte store_participating_players;
+ int num_participating_players;
+
+ InitTapeDirectory(leveldir_current->filename);
+
+ /* if a tape still exists, ask to overwrite it */
+ if (access(filename, F_OK) == 0)
+ {
+ new_tape = FALSE;
+ if (!Request("Replace old tape ?", REQ_ASK))
+ return;
+ }
+
+ /* count number of players and set corresponding bits for compact storage */
+ store_participating_players = 0;
+ num_participating_players = 0;
+ for(i=0; i<MAX_PLAYERS; i++)
+ {
+ if (tape.player_participates[i])
+ {
+ num_participating_players++;
+ store_participating_players |= (1 << i);
+ }
+ }
+
+ if (!(file = fopen(filename, MODE_WRITE)))
+ {
+ Error(ERR_WARN, "cannot save level recording file '%s'", filename);
+ return;
+ }
+
+ fputs(TAPE_COOKIE, file); /* file identifier */
+ fputc('\n', file);
+
+ putFileChunk(file, "HEAD", TAPE_HEADER_SIZE, BYTE_ORDER_BIG_ENDIAN);
+
+ putFile32BitInteger(file, tape.random_seed, BYTE_ORDER_BIG_ENDIAN);
+ putFile32BitInteger(file, tape.date, BYTE_ORDER_BIG_ENDIAN);
+ putFile32BitInteger(file, tape.length, BYTE_ORDER_BIG_ENDIAN);
+
+ fputc(store_participating_players, file);
+
+ for(i=0; i<TAPE_HEADER_UNUSED; i++) /* set unused header bytes to zero */
+ fputc(0, file);
+
+ putFileChunk(file, "BODY", (num_participating_players + 1) * tape.length,
+ BYTE_ORDER_BIG_ENDIAN);
+
+ for(i=0; i<tape.length; i++)
+ {
+ int j;
+
+ for(j=0; j<MAX_PLAYERS; j++)
+ if (tape.player_participates[j])
+ fputc(tape.pos[i].action[j], file);
+
+ fputc(tape.pos[i].delay, file);
+ }
+
+ fclose(file);
+
+ chmod(filename, TAPE_PERMS);
+
+ tape.changed = FALSE;
+
+ if (new_tape)
+ Request("tape saved !", REQ_CONFIRM);
+}
+
+static void SaveTape_HEAD(struct TapeInfo *tape, FILE *file)
+{
+ int i;
+ byte store_participating_players = 0;