+#define MAX_FILENAME_LEN 256 /* maximal filename length */
+#define MAX_LINE_LEN 1000 /* maximal input line length */
+#define CHUNK_ID_LEN 4 /* IFF style chunk id length */
+#define LEVEL_HEADER_SIZE 80 /* size of level file header */
+#define LEVEL_HEADER_UNUSED 16 /* unused level header bytes */
+#define TAPE_HEADER_SIZE 20 /* size of tape file header */
+#define TAPE_HEADER_UNUSED 7 /* unused tape header bytes */
+#define FILE_VERSION_1_0 10 /* old 1.0 file version */
+#define FILE_VERSION_1_2 12 /* actual file version */
+
+/* file identifier strings */
+#define LEVEL_COOKIE "ROCKSNDIAMONDS_LEVEL_FILE_VERSION_1.2"
+#define SCORE_COOKIE "ROCKSNDIAMONDS_SCORE_FILE_VERSION_1.2"
+#define TAPE_COOKIE "ROCKSNDIAMONDS_TAPE_FILE_VERSION_1.2"
+#define SETUP_COOKIE "ROCKSNDIAMONDS_SETUP_FILE_VERSION_1.2"
+#define LEVELSETUP_COOKIE "ROCKSNDIAMONDS_LEVELSETUP_FILE_VERSION_1.2"
+#define LEVELINFO_COOKIE "ROCKSNDIAMONDS_LEVELINFO_FILE_VERSION_1.2"
+/* old file identifiers for backward compatibility */
+#define LEVEL_COOKIE_10 "ROCKSNDIAMONDS_LEVEL_FILE_VERSION_1.0"
+#define TAPE_COOKIE_10 "ROCKSNDIAMONDS_LEVELREC_FILE_VERSION_1.0"
+
+/* file names and filename extensions */
+#ifndef MSDOS
+#define USERDATA_DIRECTORY ".rocksndiamonds"
+#define SETUP_FILENAME "setup.conf"
+#define LEVELSETUP_FILENAME "levelsetup.conf"
+#define LEVELINFO_FILENAME "levelinfo.conf"
+#define LEVELFILE_EXTENSION "level"
+#define TAPEFILE_EXTENSION "tape"
+#define SCOREFILE_EXTENSION "score"
+#else
+#define USERDATA_DIRECTORY "userdata"
+#define SETUP_FILENAME "setup.cnf"
+#define LEVELSETUP_FILENAME "lvlsetup.cnf"
+#define LEVELINFO_FILENAME "lvlinfo.cnf"
+#define LEVELFILE_EXTENSION "lvl"
+#define TAPEFILE_EXTENSION "tap"
+#define SCOREFILE_EXTENSION "sco"
+#define ERROR_FILENAME "error.out"
+#endif
+
+/* file permissions for newly written files */
+#define MODE_R_ALL (S_IRUSR | S_IRGRP | S_IROTH)
+#define MODE_W_ALL (S_IWUSR | S_IWGRP | S_IWOTH)
+#define MODE_X_ALL (S_IXUSR | S_IXGRP | S_IXOTH)
+#define USERDATA_DIR_MODE (MODE_R_ALL | MODE_X_ALL | S_IWUSR)
+#define LEVEL_PERMS (MODE_R_ALL | MODE_W_ALL)
+#define SCORE_PERMS LEVEL_PERMS
+#define TAPE_PERMS LEVEL_PERMS
+#define SETUP_PERMS LEVEL_PERMS
+
+/* sort priorities of level series (also used as level series classes) */
+#define LEVELCLASS_TUTORIAL_START 10
+#define LEVELCLASS_TUTORIAL_END 99
+#define LEVELCLASS_CLASSICS_START 100
+#define LEVELCLASS_CLASSICS_END 199
+#define LEVELCLASS_CONTRIBUTION_START 200
+#define LEVELCLASS_CONTRIBUTION_END 299
+#define LEVELCLASS_USER_START 300
+#define LEVELCLASS_USER_END 399
+
+#define LEVELCLASS_TUTORIAL LEVELCLASS_TUTORIAL_START
+#define LEVELCLASS_CLASSICS LEVELCLASS_CLASSICS_START
+#define LEVELCLASS_CONTRIBUTION LEVELCLASS_CONTRIBUTION_START
+#define LEVELCLASS_USER LEVELCLASS_USER_START
+#define LEVELCLASS_UNDEFINED 999
+
+#define IS_LEVELCLASS_TUTORIAL(n) \
+ (leveldir[n].sort_priority >= LEVELCLASS_TUTORIAL_START && \
+ leveldir[n].sort_priority <= LEVELCLASS_TUTORIAL_END)
+#define IS_LEVELCLASS_CLASSICS(n) \
+ (leveldir[n].sort_priority >= LEVELCLASS_CLASSICS_START && \
+ leveldir[n].sort_priority <= LEVELCLASS_CLASSICS_END)
+#define IS_LEVELCLASS_CONTRIBUTION(n) \
+ (leveldir[n].sort_priority >= LEVELCLASS_CONTRIBUTION_START && \
+ leveldir[n].sort_priority <= LEVELCLASS_CONTRIBUTION_END)
+#define IS_LEVELCLASS_USER(n) \
+ (leveldir[n].sort_priority >= LEVELCLASS_USER_START && \
+ leveldir[n].sort_priority <= LEVELCLASS_USER_END)
+
+#define LEVELCLASS(n) (IS_LEVELCLASS_TUTORIAL(n) ? LEVELCLASS_TUTORIAL : \
+ IS_LEVELCLASS_CLASSICS(n) ? LEVELCLASS_CLASSICS : \
+ IS_LEVELCLASS_CONTRIBUTION(n) ? LEVELCLASS_CONTRIBUTION : \
+ IS_LEVELCLASS_USER(n) ? LEVELCLASS_USER : \
+ LEVELCLASS_UNDEFINED)
+
+#define LEVELCOLOR(n) (IS_LEVELCLASS_TUTORIAL(n) ? FC_BLUE : \
+ IS_LEVELCLASS_CLASSICS(n) ? FC_YELLOW : \
+ IS_LEVELCLASS_CONTRIBUTION(n) ? FC_GREEN : \
+ IS_LEVELCLASS_USER(n) ? FC_RED : FC_BLUE)
+
+static void SaveUserLevelInfo(); /* for 'InitUserLevelDir()' */
+static char *getSetupLine(char *, int); /* for 'SaveUserLevelInfo()' */
+
+static char *getGlobalDataDir()
+{
+ return GAME_DIR;
+}
+
+char *getUserDataDir()
+{
+ static char *userdata_dir = NULL;
+
+ if (!userdata_dir)
+ {
+ char *home_dir = getHomeDir();
+ char *data_dir = USERDATA_DIRECTORY;
+
+ userdata_dir = getPath2(home_dir, data_dir);
+ }
+
+ return userdata_dir;
+}
+
+static char *getSetupDir()
+{
+ return getUserDataDir();
+}
+
+static char *getUserLevelDir(char *level_subdir)
+{
+ static char *userlevel_dir = NULL;
+ char *data_dir = getUserDataDir();
+ char *userlevel_subdir = LEVELS_DIRECTORY;
+
+ if (userlevel_dir)
+ free(userlevel_dir);
+
+ if (strlen(level_subdir) > 0)
+ userlevel_dir = getPath3(data_dir, userlevel_subdir, level_subdir);
+ else
+ userlevel_dir = getPath2(data_dir, userlevel_subdir);
+
+ return userlevel_dir;
+}
+
+static char *getTapeDir(char *level_subdir)
+{
+ static char *tape_dir = NULL;
+ char *data_dir = getUserDataDir();
+ char *tape_subdir = TAPES_DIRECTORY;
+
+ if (tape_dir)
+ free(tape_dir);
+
+ if (strlen(level_subdir) > 0)
+ tape_dir = getPath3(data_dir, tape_subdir, level_subdir);
+ else
+ tape_dir = getPath2(data_dir, tape_subdir);
+
+ return tape_dir;
+}
+
+static char *getScoreDir(char *level_subdir)
+{
+ static char *score_dir = NULL;
+ char *data_dir = getGlobalDataDir();
+ char *score_subdir = SCORES_DIRECTORY;
+
+ if (score_dir)
+ free(score_dir);
+
+ if (strlen(level_subdir) > 0)
+ score_dir = getPath3(data_dir, score_subdir, level_subdir);
+ else
+ score_dir = getPath2(data_dir, score_subdir);
+
+ return score_dir;
+}
+
+static char *getLevelFilename(int nr)
+{
+ static char *filename = NULL;
+ char basename[MAX_FILENAME_LEN];
+
+ if (filename != NULL)
+ free(filename);
+
+ sprintf(basename, "%03d.%s", nr, LEVELFILE_EXTENSION);
+ filename = getPath3((leveldir[leveldir_nr].user_defined ?
+ getUserLevelDir("") :
+ options.level_directory),
+ leveldir[leveldir_nr].filename,
+ basename);
+
+ return filename;
+}
+
+static char *getTapeFilename(int nr)
+{
+ static char *filename = NULL;
+ char basename[MAX_FILENAME_LEN];
+
+ if (filename != NULL)
+ free(filename);
+
+ sprintf(basename, "%03d.%s", nr, TAPEFILE_EXTENSION);
+ filename = getPath2(getTapeDir(leveldir[leveldir_nr].filename), basename);
+
+ return filename;
+}
+
+static char *getScoreFilename(int nr)
+{
+ static char *filename = NULL;
+ char basename[MAX_FILENAME_LEN];
+
+ if (filename != NULL)
+ free(filename);
+
+ sprintf(basename, "%03d.%s", nr, SCOREFILE_EXTENSION);
+ filename = getPath2(getScoreDir(leveldir[leveldir_nr].filename), basename);
+
+ return filename;
+}
+
+static void createDirectory(char *dir, char *text)
+{
+ if (access(dir, F_OK) != 0)
+ if (mkdir(dir, USERDATA_DIR_MODE) != 0)
+ Error(ERR_WARN, "cannot create %s directory '%s'", text, dir);
+}
+
+static void InitUserDataDirectory()
+{
+ createDirectory(getUserDataDir(), "user data");
+}
+
+static void InitTapeDirectory(char *level_subdir)
+{
+ createDirectory(getUserDataDir(), "user data");
+ createDirectory(getTapeDir(""), "main tape");
+ createDirectory(getTapeDir(level_subdir), "level tape");
+}
+
+static void InitScoreDirectory(char *level_subdir)
+{
+ createDirectory(getScoreDir(""), "main score");
+ createDirectory(getScoreDir(level_subdir), "level score");
+}
+
+static void InitUserLevelDirectory(char *level_subdir)
+{
+ if (access(getUserLevelDir(level_subdir), F_OK) != 0)
+ {
+ createDirectory(getUserDataDir(), "user data");
+ createDirectory(getUserLevelDir(""), "main user level");
+ createDirectory(getUserLevelDir(level_subdir), "user level");
+
+ SaveUserLevelInfo();
+ }
+}
+
+static void setLevelInfoToDefaults()
+{
+ int i, x, y;
+
+ lev_fieldx = level.fieldx = STD_LEV_FIELDX;
+ lev_fieldy = level.fieldy = STD_LEV_FIELDY;
+
+ for(x=0; x<MAX_LEV_FIELDX; x++)
+ for(y=0; y<MAX_LEV_FIELDY; y++)
+ Feld[x][y] = Ur[x][y] = EL_ERDREICH;
+
+ level.time = 100;
+ level.gems_needed = 0;
+ level.amoeba_speed = 10;
+ level.time_magic_wall = 10;
+ level.time_wheel = 10;
+ level.amoeba_content = EL_DIAMANT;
+ level.double_speed = FALSE;
+ level.gravity = FALSE;
+
+ for(i=0; i<MAX_LEVEL_NAME_LEN; i++)
+ level.name[i] = '\0';
+ for(i=0; i<MAX_LEVEL_AUTHOR_LEN; i++)
+ level.author[i] = '\0';
+
+ strcpy(level.name, NAMELESS_LEVEL_NAME);
+ strcpy(level.author, ANONYMOUS_NAME);
+
+ for(i=0; i<LEVEL_SCORE_ELEMENTS; i++)
+ level.score[i] = 10;
+
+ level.num_yam_contents = STD_ELEMENT_CONTENTS;
+ for(i=0; i<MAX_ELEMENT_CONTENTS; i++)
+ for(x=0; x<3; x++)
+ for(y=0; y<3; y++)
+ level.yam_content[i][x][y] = EL_FELSBROCKEN;
+
+ Feld[0][0] = Ur[0][0] = EL_SPIELFIGUR;
+ Feld[STD_LEV_FIELDX-1][STD_LEV_FIELDY-1] =
+ Ur[STD_LEV_FIELDX-1][STD_LEV_FIELDY-1] = EL_AUSGANG_ZU;
+
+ BorderElement = EL_BETON;
+
+ /* try to determine better author name than 'anonymous' */
+ if (strcmp(leveldir[leveldir_nr].author, ANONYMOUS_NAME) != 0)
+ {
+ strncpy(level.author, leveldir[leveldir_nr].author, MAX_LEVEL_AUTHOR_LEN);
+ level.author[MAX_LEVEL_AUTHOR_LEN] = '\0';
+ }
+ else
+ {
+ switch (LEVELCLASS(leveldir_nr))
+ {
+ case LEVELCLASS_TUTORIAL:
+ strcpy(level.author, PROGRAM_AUTHOR_STRING);
+ break;
+
+ case LEVELCLASS_CONTRIBUTION:
+ strncpy(level.author, leveldir[leveldir_nr].name,MAX_LEVEL_AUTHOR_LEN);
+ level.author[MAX_LEVEL_AUTHOR_LEN] = '\0';
+ break;
+
+ case LEVELCLASS_USER:
+ strncpy(level.author, getRealName(), MAX_LEVEL_AUTHOR_LEN);
+ level.author[MAX_LEVEL_AUTHOR_LEN] = '\0';
+ break;
+
+ default:
+ /* keep default value */
+ break;
+ }
+ }
+}
+
+void LoadLevel(int level_nr)
+{
+ int i, x, y;
+ char *filename = getLevelFilename(level_nr);
+ char cookie[MAX_LINE_LEN];
+ char chunk[CHUNK_ID_LEN + 1];
+ int file_version = FILE_VERSION_1_2; /* last version of level files */
+ int chunk_length;
+ FILE *file;
+
+ /* always start with reliable default values */
+ setLevelInfoToDefaults();
+
+ if (!(file = fopen(filename, "r")))
+ {
+ 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 (strcmp(cookie, LEVEL_COOKIE_10) == 0) /* old 1.0 level format */
+ file_version = FILE_VERSION_1_0;
+ else if (strcmp(cookie, LEVEL_COOKIE) != 0) /* unknown level format */
+ {
+ Error(ERR_WARN, "wrong file identifier of level file '%s'", filename);
+ fclose(file);
+ return;
+ }
+
+ /* read chunk "HEAD" */
+ if (file_version >= FILE_VERSION_1_2)
+ {
+ getFileChunk(file, chunk, &chunk_length, BYTE_ORDER_BIG_ENDIAN);
+ if (strcmp(chunk, "HEAD") || chunk_length != LEVEL_HEADER_SIZE)
+ {
+ Error(ERR_WARN, "wrong 'HEAD' chunk of level file '%s'", filename);
+ fclose(file);
+ return;
+ }
+ }
+
+ lev_fieldx = level.fieldx = fgetc(file);
+ lev_fieldy = level.fieldy = fgetc(file);
+
+ level.time = getFile16BitInteger(file, BYTE_ORDER_BIG_ENDIAN);
+ level.gems_needed = getFile16BitInteger(file, BYTE_ORDER_BIG_ENDIAN);
+
+ for(i=0; i<MAX_LEVEL_NAME_LEN; i++)
+ level.name[i] = fgetc(file);
+ level.name[MAX_LEVEL_NAME_LEN] = 0;
+
+ for(i=0; i<LEVEL_SCORE_ELEMENTS; i++)
+ level.score[i] = fgetc(file);
+
+ level.num_yam_contents = STD_ELEMENT_CONTENTS;
+ for(i=0; i<MAX_ELEMENT_CONTENTS; i++)
+ {
+ for(y=0; y<3; y++)
+ {
+ for(x=0; x<3; x++)
+ {
+ if (i < STD_ELEMENT_CONTENTS)
+ level.yam_content[i][x][y] = fgetc(file);
+ else
+ level.yam_content[i][x][y] = EL_LEERRAUM;
+ }
+ }
+ }
+
+ level.amoeba_speed = fgetc(file);
+ level.time_magic_wall = fgetc(file);
+ level.time_wheel = fgetc(file);
+ level.amoeba_content = fgetc(file);
+ level.double_speed = (fgetc(file) == 1 ? TRUE : FALSE);
+ level.gravity = (fgetc(file) == 1 ? TRUE : FALSE);
+
+ for(i=0; i<LEVEL_HEADER_UNUSED; i++) /* skip unused header bytes */
+ fgetc(file);
+
+ /* read chunk "BODY" */
+ if (file_version >= FILE_VERSION_1_2)
+ {
+ getFileChunk(file, chunk, &chunk_length, BYTE_ORDER_BIG_ENDIAN);
+
+ /* look for optional author chunk */
+ if (strcmp(chunk, "AUTH") == 0 && chunk_length == MAX_LEVEL_AUTHOR_LEN)
+ {
+ for(i=0; i<MAX_LEVEL_AUTHOR_LEN; i++)
+ level.author[i] = fgetc(file);
+ level.author[MAX_LEVEL_NAME_LEN] = 0;
+
+ getFileChunk(file, chunk, &chunk_length, BYTE_ORDER_BIG_ENDIAN);
+ }
+
+ /* look for optional content chunk */
+ if (strcmp(chunk, "CONT") == 0 &&
+ chunk_length == 4 + MAX_ELEMENT_CONTENTS * 3 * 3)
+ {
+ fgetc(file);
+ level.num_yam_contents = fgetc(file);
+ fgetc(file);
+ fgetc(file);
+
+ for(i=0; i<MAX_ELEMENT_CONTENTS; i++)
+ for(y=0; y<3; y++)
+ for(x=0; x<3; x++)
+ level.yam_content[i][x][y] = fgetc(file);
+
+ getFileChunk(file, chunk, &chunk_length, BYTE_ORDER_BIG_ENDIAN);
+ }
+
+ /* next check body chunk identifier and chunk length */
+ if (strcmp(chunk, "BODY") || chunk_length != lev_fieldx * lev_fieldy)
+ {
+ Error(ERR_WARN, "wrong 'BODY' chunk of level file '%s'", filename);
+ fclose(file);
+ return;
+ }
+ }
+
+ /* clear all other level fields (needed if resized in level editor later) */
+ for(x=0; x<MAX_LEV_FIELDX; x++)
+ for(y=0; y<MAX_LEV_FIELDY; y++)
+ Feld[x][y] = Ur[x][y] = EL_LEERRAUM;
+
+ /* now read in the valid level fields from level file */
+ for(y=0; y<lev_fieldy; y++)
+ for(x=0; x<lev_fieldx; x++)
+ Feld[x][y] = Ur[x][y] = fgetc(file);
+
+ fclose(file);
+
+ /* player was faster than monsters in pre-1.0 levels */
+ if (file_version == FILE_VERSION_1_0 &&
+ IS_LEVELCLASS_CONTRIBUTION(leveldir_nr))
+ {
+ 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;
+ }
+
+ /* determine border element for this level */
+ SetBorderElement();
+}
+
+void SaveLevel(int level_nr)
+{
+ int i, x, y;
+ char *filename = getLevelFilename(level_nr);
+ FILE *file;
+
+ if (!(file = fopen(filename, "w")))
+ {
+ Error(ERR_WARN, "cannot save level file '%s'", filename);
+ return;
+ }
+
+ fputs(LEVEL_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(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);
+
+ 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++)
+ 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++)
+ fputc(Ur[x][y], file);
+
+ fclose(file);
+
+ chmod(filename, LEVEL_PERMS);
+}
+
+void LoadTape(int level_nr)
+{
+ int i, j;
+ char *filename = getTapeFilename(level_nr);
+ char cookie[MAX_LINE_LEN];
+ char chunk[CHUNK_ID_LEN + 1];
+ FILE *file;
+ int num_participating_players;
+ int file_version = FILE_VERSION_1_2; /* last version of tape files */
+ int chunk_length;
+
+ /* 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 */
+ num_participating_players = 1;
+
+ if (!(file = fopen(filename, "r")))
+ 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 (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;
+ }
+
+ /* read chunk "HEAD" */
+ if (file_version >= FILE_VERSION_1_2)
+ {
+ getFileChunk(file, chunk, &chunk_length, BYTE_ORDER_BIG_ENDIAN);
+ if (strcmp(chunk, "HEAD") || chunk_length != 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, &chunk_length, BYTE_ORDER_BIG_ENDIAN);
+ if (strcmp(chunk, "BODY") ||
+ chunk_length != (num_participating_players + 1) * tape.length)
+ {
+ Error(ERR_WARN, "wrong 'BODY' chunk of tape file '%s'", filename);
+ fclose(file);
+ return;
+ }
+ }
+
+ 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 (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;
+ }
+ }
+
+ if (feof(file))
+ break;
+ }
+
+ fclose(file);
+
+ if (i != tape.length)
+ Error(ERR_WARN, "level recording file '%s' corrupted", filename);
+
+ tape.length_seconds = GetTapeLength();
+}
+
+void 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[leveldir_nr].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, "w")))
+ {
+ 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);
+}
+
+void LoadScore(int level_nr)