+#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 15 /* unused level header bytes */
+#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 */
+
+/* file identifier strings */
+#define LEVEL_COOKIE "ROCKSNDIAMONDS_LEVEL_FILE_VERSION_2.0"
+#define SCORE_COOKIE "ROCKSNDIAMONDS_SCORE_FILE_VERSION_1.2"
+#define TAPE_COOKIE "ROCKSNDIAMONDS_TAPE_FILE_VERSION_2.0"
+#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 LEVEL_COOKIE_12 "ROCKSNDIAMONDS_LEVEL_FILE_VERSION_1.2"
+#define LEVEL_COOKIE_14 "ROCKSNDIAMONDS_LEVEL_FILE_VERSION_1.4"
+#define TAPE_COOKIE_10 "ROCKSNDIAMONDS_LEVELREC_FILE_VERSION_1.0"
+#define TAPE_COOKIE_12 "ROCKSNDIAMONDS_TAPE_FILE_VERSION_1.2"
+
+/* file names and filename extensions */
+#if !defined(PLATFORM_MSDOS)
+#define LEVELSETUP_DIRECTORY "levelsetup"
+#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 LEVELSETUP_DIRECTORY "lvlsetup"
+#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"
+#endif
+
+#if defined(PLATFORM_WIN32)
+#ifndef S_IRGRP
+#define S_IRGRP S_IRUSR
+#endif
+#ifndef S_IROTH
+#define S_IROTH S_IRUSR
+#endif
+#ifndef S_IWGRP
+#define S_IWGRP S_IWUSR
+#endif
+#ifndef S_IWOTH
+#define S_IWOTH S_IWUSR
+#endif
+#ifndef S_IXGRP
+#define S_IXGRP S_IXUSR
+#endif
+#ifndef S_IXOTH
+#define S_IXOTH S_IXUSR
+#endif
+#endif /* PLATFORM_WIN32 */
+
+/* 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 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_BD_START 400
+#define LEVELCLASS_BD_END 499
+#define LEVELCLASS_EM_START 500
+#define LEVELCLASS_EM_END 599
+#define LEVELCLASS_SP_START 600
+#define LEVELCLASS_SP_END 699
+#define LEVELCLASS_DX_START 700
+#define LEVELCLASS_DX_END 799
+
+#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_BD LEVELCLASS_BD_START
+#define LEVELCLASS_EM LEVELCLASS_EM_START
+#define LEVELCLASS_SP LEVELCLASS_SP_START
+#define LEVELCLASS_DX LEVELCLASS_DX_START
+
+#define LEVELCLASS_UNDEFINED 999
+
+#define NUM_LEVELCLASS_DESC 8
+char *levelclass_desc[NUM_LEVELCLASS_DESC] =
+{
+ "Tutorial Levels",
+ "Classic Originals",
+ "Contributions",
+ "Private Levels",
+ "Boulderdash",
+ "Emerald Mine",
+ "Supaplex",
+ "DX Boulderdash"
+};
+
+#define IS_LEVELCLASS_TUTORIAL(p) \
+ ((p)->sort_priority >= LEVELCLASS_TUTORIAL_START && \
+ (p)->sort_priority <= LEVELCLASS_TUTORIAL_END)
+#define IS_LEVELCLASS_CLASSICS(p) \
+ ((p)->sort_priority >= LEVELCLASS_CLASSICS_START && \
+ (p)->sort_priority <= LEVELCLASS_CLASSICS_END)
+#define IS_LEVELCLASS_CONTRIBUTION(p) \
+ ((p)->sort_priority >= LEVELCLASS_CONTRIBUTION_START && \
+ (p)->sort_priority <= LEVELCLASS_CONTRIBUTION_END)
+#define IS_LEVELCLASS_USER(p) \
+ ((p)->sort_priority >= LEVELCLASS_USER_START && \
+ (p)->sort_priority <= LEVELCLASS_USER_END)
+#define IS_LEVELCLASS_BD(p) \
+ ((p)->sort_priority >= LEVELCLASS_BD_START && \
+ (p)->sort_priority <= LEVELCLASS_BD_END)
+#define IS_LEVELCLASS_EM(p) \
+ ((p)->sort_priority >= LEVELCLASS_EM_START && \
+ (p)->sort_priority <= LEVELCLASS_EM_END)
+#define IS_LEVELCLASS_SP(p) \
+ ((p)->sort_priority >= LEVELCLASS_SP_START && \
+ (p)->sort_priority <= LEVELCLASS_SP_END)
+#define IS_LEVELCLASS_DX(p) \
+ ((p)->sort_priority >= LEVELCLASS_DX_START && \
+ (p)->sort_priority <= LEVELCLASS_DX_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 : \
+ IS_LEVELCLASS_BD(n) ? LEVELCLASS_BD : \
+ IS_LEVELCLASS_EM(n) ? LEVELCLASS_EM : \
+ IS_LEVELCLASS_SP(n) ? LEVELCLASS_SP : \
+ IS_LEVELCLASS_DX(n) ? LEVELCLASS_DX : \
+ LEVELCLASS_UNDEFINED)
+
+#define LEVELCOLOR(n) (IS_LEVELCLASS_TUTORIAL(n) ? FC_BLUE : \
+ IS_LEVELCLASS_CLASSICS(n) ? FC_RED : \
+ IS_LEVELCLASS_BD(n) ? FC_GREEN : \
+ IS_LEVELCLASS_EM(n) ? FC_YELLOW : \
+ IS_LEVELCLASS_SP(n) ? FC_GREEN : \
+ IS_LEVELCLASS_DX(n) ? FC_YELLOW : \
+ IS_LEVELCLASS_CONTRIBUTION(n) ? FC_GREEN : \
+ IS_LEVELCLASS_USER(n) ? FC_RED : \
+ FC_BLUE)
+
+#define LEVELSORTING(n) (IS_LEVELCLASS_TUTORIAL(n) ? 0 : \
+ IS_LEVELCLASS_CLASSICS(n) ? 1 : \
+ IS_LEVELCLASS_BD(n) ? 2 : \
+ IS_LEVELCLASS_EM(n) ? 3 : \
+ IS_LEVELCLASS_SP(n) ? 4 : \
+ IS_LEVELCLASS_DX(n) ? 5 : \
+ IS_LEVELCLASS_CONTRIBUTION(n) ? 6 : \
+ IS_LEVELCLASS_USER(n) ? 7 : \
+ 9)
+
+static int getFileVersionFromCookieString(const char *cookie)
+{
+ const char *ptr_cookie1, *ptr_cookie2;
+ const char *pattern1 = "_FILE_VERSION_";
+ const char *pattern2 = "?.?";
+ const int len_cookie = strlen(cookie);
+ const int len_pattern1 = strlen(pattern1);
+ const int len_pattern2 = strlen(pattern2);
+ const int len_pattern = len_pattern1 + len_pattern2;
+ int version_major, version_minor;
+
+ if (len_cookie <= len_pattern)
+ return -1;
+
+ ptr_cookie1 = &cookie[len_cookie - len_pattern];
+ ptr_cookie2 = &cookie[len_cookie - len_pattern2];
+
+ if (strncmp(ptr_cookie1, pattern1, len_pattern1) != 0)
+ return -1;
+
+ if (ptr_cookie2[0] < '0' || ptr_cookie2[0] > '9' ||
+ ptr_cookie2[1] != '.' ||
+ ptr_cookie2[2] < '0' || ptr_cookie2[2] > '9')
+ return -1;
+
+ version_major = ptr_cookie2[0] - '0';
+ version_minor = ptr_cookie2[2] - '0';
+
+ return (version_major * 10 + version_minor);
+}
+
+boolean checkCookieString(const char *cookie, const char *template)
+{
+ const char *pattern = "_FILE_VERSION_?.?";
+ const int len_cookie = strlen(cookie);
+ const int len_template = strlen(template);
+ const int len_pattern = strlen(pattern);
+
+ if (len_cookie != len_template)
+ return FALSE;
+
+ if (strncmp(cookie, template, len_cookie - len_pattern) != 0)
+ return FALSE;
+
+ return TRUE;
+}
+
+char *getLevelClassDescription(struct LevelDirInfo *ldi)
+{
+ int position = ldi->sort_priority / 100;
+
+ if (position >= 0 && position < NUM_LEVELCLASS_DESC)
+ return levelclass_desc[position];
+ else
+ return "Unknown Level Class";
+}
+
+static void SaveUserLevelInfo(); /* for 'InitUserLevelDir()' */
+static char *getSetupLine(char *, int); /* for 'SaveUserLevelInfo()' */
+
+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 = options.rw_base_directory;
+ 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 *getLevelSetupDir(char *level_subdir)
+{
+ static char *levelsetup_dir = NULL;
+ char *data_dir = getUserDataDir();
+ char *levelsetup_subdir = LEVELSETUP_DIRECTORY;
+
+ if (levelsetup_dir)
+ free(levelsetup_dir);
+
+ if (strlen(level_subdir) > 0)
+ levelsetup_dir = getPath3(data_dir, levelsetup_subdir, level_subdir);
+ else
+ levelsetup_dir = getPath2(data_dir, levelsetup_subdir);
+
+ return levelsetup_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_current->user_defined ?
+ getUserLevelDir("") :
+ options.level_directory),
+ leveldir_current->fullpath,
+ 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_current->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_current->filename), basename);
+
+ return filename;
+}
+
+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 InitLevelSetupDirectory(char *level_subdir)
+{
+ createDirectory(getUserDataDir(), "user data");
+ createDirectory(getLevelSetupDir(""), "main level setup");
+ createDirectory(getLevelSetupDir(level_subdir), "level setup");
+}
+
+static void setLevelInfoToDefaults()
+{
+ int i, x, y;
+
+ level.file_version = FILE_VERSION_ACTUAL;
+ level.game_version = GAME_VERSION_ACTUAL;
+
+ level.encoding_16bit_field = FALSE; /* default: only 8-bit elements */
+ level.encoding_16bit_yamyam = FALSE; /* default: only 8-bit elements */
+ level.encoding_16bit_amoeba = FALSE; /* default: only 8-bit elements */
+
+ 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.time_light = 10;
+ level.time_timegate = 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] =
+ (i < STD_ELEMENT_CONTENTS ? EL_FELSBROCKEN : EL_LEERRAUM);
+
+ 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_current->author, ANONYMOUS_NAME) != 0)
+ {
+ strncpy(level.author, leveldir_current->author, MAX_LEVEL_AUTHOR_LEN);
+ level.author[MAX_LEVEL_AUTHOR_LEN] = '\0';
+ }
+ else
+ {
+ switch (LEVELCLASS(leveldir_current))
+ {
+ case LEVELCLASS_TUTORIAL:
+ strcpy(level.author, PROGRAM_AUTHOR_STRING);
+ break;
+
+ case LEVELCLASS_CONTRIBUTION:
+ strncpy(level.author, leveldir_current->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;
+ }
+ }
+}
+
+static int checkLevelElement(int element)
+{
+ if (element >= EL_FIRST_RUNTIME_EL)
+ {
+ Error(ERR_WARN, "invalid level element %d", element);
+ element = EL_CHAR_FRAGE;
+ }
+
+ return element;
+}
+
+void OLD_LoadLevel(int level_nr)
+{
+ int i, x, y;
+ char *filename = getLevelFilename(level_nr);
+ char cookie[MAX_LINE_LEN];
+ char chunk_name[CHUNK_ID_LEN + 1];
+ boolean encoding_16bit = FALSE; /* default: maximal 256 elements */
+ int file_version = FILE_VERSION_ACTUAL;
+ 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 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_12) == 0)/* 1.2 (8 bit) level format */
+ file_version = FILE_VERSION_1_2;
+ else if (strcmp(cookie, LEVEL_COOKIE) != 0) /* unknown level format */
+ {
+ Error(ERR_WARN, "wrong file identifier of level file '%s'", filename);
+ fclose(file);
+ return;
+ }
+#else
+ if (!checkCookieString(cookie, LEVEL_COOKIE)) /* unknown file format */
+ {
+ Error(ERR_WARN, "unknown format of level file '%s'", filename);
+ fclose(file);
+ return;
+ }
+
+ file_version = getFileVersionFromCookieString(cookie);
+#endif
+
+ level.file_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 != 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] = checkLevelElement(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 = checkLevelElement(fgetc(file));
+ level.double_speed = (fgetc(file) == 1 ? TRUE : FALSE);
+ level.gravity = (fgetc(file) == 1 ? TRUE : FALSE);
+
+ encoding_16bit = (fgetc(file) == 1 ? TRUE : FALSE);
+
+ for(i=0; i<LEVEL_HEADER_UNUSED; i++) /* skip unused header bytes */
+ fgetc(file);
+
+ if (file_version >= FILE_VERSION_1_2)
+ {
+ getFileChunk(file, chunk_name, &chunk_size, BYTE_ORDER_BIG_ENDIAN);
+
+ /* look for optional author chunk */
+ if (strcmp(chunk_name, "AUTH") == 0 && chunk_size == 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_name, &chunk_size, BYTE_ORDER_BIG_ENDIAN);
+ }
+
+ /* look for optional content chunk */
+ if (strcmp(chunk_name, "CONT") == 0 &&
+ chunk_size == 4 + MAX_ELEMENT_CONTENTS * 3 * 3)
+ {
+ fgetc(file);
+ level.num_yam_contents = fgetc(file);
+ fgetc(file);
+ fgetc(file);
+
+ if (level.num_yam_contents < 1 ||
+ level.num_yam_contents > MAX_ELEMENT_CONTENTS)
+ {
+#if DEBUG
+ printf("WARNING: num_yam_contents == %d (corrected)\n",
+ level.num_yam_contents);
+#endif
+ 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++)
+ level.yam_content[i][x][y] =
+ checkLevelElement(encoding_16bit ?
+ getFile16BitInteger(file,
+ BYTE_ORDER_BIG_ENDIAN) :
+ fgetc(file));
+
+ getFileChunk(file, chunk_name, &chunk_size, BYTE_ORDER_BIG_ENDIAN);
+ }
+
+ /* next check body chunk identifier and chunk size */
+ if (strcmp(chunk_name, "BODY") != 0 ||
+ chunk_size != 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] =
+ checkLevelElement(encoding_16bit ?
+ getFile16BitInteger(file, BYTE_ORDER_BIG_ENDIAN) :
+ fgetc(file));
+
+ 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 = file_version;
+
+ /* player was faster than monsters in pre-1.0 levels */
+ if (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();
+}
+
+static void ReadUnusedBytesFromFile(FILE *file, unsigned long bytes)
+{
+ while (bytes--)
+ fgetc(file);
+}
+
+static void WriteUnusedBytesToFile(FILE *file, unsigned long bytes)
+{
+ while (bytes--)
+ fputc(0, file);
+}
+
+static int LoadLevel_HEAD(struct LevelInfo *level, FILE *file, int chunk_size)
+{
+ int i, x, y;
+
+ 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<STD_ELEMENT_CONTENTS; i++)
+ for(y=0; y<3; y++)
+ for(x=0; x<3; x++)
+ level->yam_content[i][x][y] = checkLevelElement(fgetc(file));
+
+ level->amoeba_speed = fgetc(file);
+ level->time_magic_wall = fgetc(file);
+ level->time_wheel = fgetc(file);
+ level->amoeba_content = checkLevelElement(fgetc(file));
+ level->double_speed = (fgetc(file) == 1 ? TRUE : FALSE);
+ level->gravity = (fgetc(file) == 1 ? TRUE : FALSE);
+
+ level->encoding_16bit_field = (fgetc(file) == 1 ? TRUE : FALSE);
+
+ ReadUnusedBytesFromFile(file, LEVEL_HEADER_UNUSED);
+
+ return chunk_size;
+}
+
+static int LoadLevel_AUTH(struct LevelInfo *level, FILE *file, int chunk_size)
+{
+ int i;
+
+ for(i=0; i<MAX_LEVEL_AUTHOR_LEN; i++)
+ level->author[i] = fgetc(file);
+ level->author[MAX_LEVEL_NAME_LEN] = 0;
+
+ return chunk_size;
+}
+
+static int LoadLevel_CONT(struct LevelInfo *level, FILE *file, int chunk_size)
+{
+ int i, x, y;
+ int header_size = 4;
+ int content_size = MAX_ELEMENT_CONTENTS * 3 * 3;
+ int chunk_size_expected = header_size + content_size;
+
+ /* Note: "chunk_size" was wrong before version 2.0 when elements are
+ stored with 16-bit encoding (and should be twice as big then).
+ Even worse, playfield data was stored 16-bit when only yamyam content
+ contained 16-bit elements and vice versa. */
+
+ if (level->encoding_16bit_field && level->file_version >= FILE_VERSION_2_0)
+ chunk_size_expected += content_size;
+
+ if (chunk_size_expected != chunk_size)
+ {
+ ReadUnusedBytesFromFile(file, chunk_size);
+ return chunk_size_expected;
+ }
+
+ fgetc(file);
+ level->num_yam_contents = fgetc(file);
+ fgetc(file);
+ fgetc(file);
+
+ /* correct invalid number of content fields -- should never happen */
+ if (level->num_yam_contents < 1 ||
+ level->num_yam_contents > MAX_ELEMENT_CONTENTS)
+ 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++)
+ level->yam_content[i][x][y] =
+ checkLevelElement(level->encoding_16bit_field ?
+ getFile16BitInteger(file, BYTE_ORDER_BIG_ENDIAN) :
+ fgetc(file));
+ return chunk_size;
+}
+
+static int LoadLevel_BODY(struct LevelInfo *level, FILE *file, int chunk_size)
+{
+ int x, y;
+ int chunk_size_expected = level->fieldx * level->fieldy;
+
+ /* Note: "chunk_size" was wrong before version 2.0 when elements are
+ stored with 16-bit encoding (and should be twice as big then).
+ Even worse, playfield data was stored 16-bit when only yamyam content
+ contained 16-bit elements and vice versa. */
+
+ if (level->encoding_16bit_field && level->file_version >= FILE_VERSION_2_0)
+ chunk_size_expected *= 2;
+
+ if (chunk_size_expected != chunk_size)
+ {
+ ReadUnusedBytesFromFile(file, chunk_size);
+ return chunk_size_expected;
+ }
+
+ for(y=0; y<level->fieldy; y++)
+ for(x=0; x<level->fieldx; x++)
+ Feld[x][y] = Ur[x][y] =
+ checkLevelElement(level->encoding_16bit_field ?
+ getFile16BitInteger(file, BYTE_ORDER_BIG_ENDIAN) :
+ fgetc(file));
+ return chunk_size;
+}
+
+static int LoadLevel_CNT2(struct LevelInfo *level, FILE *file, int chunk_size)
+{
+ int i, x, y;
+ int element;
+ int num_contents, content_xsize, content_ysize;
+ int content_array[MAX_ELEMENT_CONTENTS][3][3];
+
+ element = checkLevelElement(getFile16BitInteger(file,BYTE_ORDER_BIG_ENDIAN));
+ num_contents = fgetc(file);
+ content_xsize = fgetc(file);
+ content_ysize = fgetc(file);
+ ReadUnusedBytesFromFile(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++)
+ 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)