+ /* some free bytes for future properties and padding */
+ ReadUnusedBytesFromFile(file, 7);
+
+ element_info[element].use_gfx_element = getFile8Bit(file);
+ element_info[element].gfx_element =
+ checkLevelElement(getFile16BitBE(file));
+
+ element_info[element].collect_score = getFile8Bit(file);
+ element_info[element].collect_count = getFile8Bit(file);
+
+ element_info[element].push_delay_fixed = getFile16BitBE(file);
+ element_info[element].push_delay_random = getFile16BitBE(file);
+ element_info[element].move_delay_fixed = getFile16BitBE(file);
+ element_info[element].move_delay_random = getFile16BitBE(file);
+
+ element_info[element].move_pattern = getFile16BitBE(file);
+ element_info[element].move_direction_initial = getFile8Bit(file);
+ element_info[element].move_stepsize = getFile8Bit(file);
+
+ for(y=0; y<3; y++)
+ for(x=0; x<3; x++)
+ element_info[element].content[x][y] =
+ checkLevelElement(getFile16BitBE(file));
+
+ element_info[element].change->events = getFile32BitBE(file);
+
+ element_info[element].change->target_element =
+ checkLevelElement(getFile16BitBE(file));
+
+ element_info[element].change->delay_fixed = getFile16BitBE(file);
+ element_info[element].change->delay_random = getFile16BitBE(file);
+ element_info[element].change->delay_frames = getFile16BitBE(file);
+
+ element_info[element].change->trigger_element =
+ checkLevelElement(getFile16BitBE(file));
+
+ element_info[element].change->explode = getFile8Bit(file);
+ element_info[element].change->use_content = getFile8Bit(file);
+ element_info[element].change->only_complete = getFile8Bit(file);
+ element_info[element].change->use_random_change = getFile8Bit(file);
+
+ element_info[element].change->random = getFile8Bit(file);
+ element_info[element].change->power = getFile8Bit(file);
+
+ for(y=0; y<3; y++)
+ for(x=0; x<3; x++)
+ element_info[element].change->content[x][y] =
+ checkLevelElement(getFile16BitBE(file));
+
+ element_info[element].slippery_type = getFile8Bit(file);
+
+ /* some free bytes for future properties and padding */
+ ReadUnusedBytesFromFile(file, LEVEL_CPART_CUS3_UNUSED);
+
+ /* mark that this custom element has been modified */
+ element_info[element].modified_settings = TRUE;
+ }
+
+ return chunk_size;
+}
+
+static int LoadLevel_CUS4(FILE *file, int chunk_size, struct LevelInfo *level)
+{
+ struct ElementInfo *ei;
+ int chunk_size_expected;
+ int element;
+ int i, x, y;
+
+ element = getFile16BitBE(file);
+
+ if (!IS_CUSTOM_ELEMENT(element))
+ {
+ Error(ERR_WARN, "invalid custom element number %d", element);
+
+ element = EL_DEFAULT; /* dummy element used for artwork config */
+ }
+
+ ei = &element_info[element];
+
+ for(i=0; i < MAX_ELEMENT_NAME_LEN; i++)
+ ei->description[i] = getFile8Bit(file);
+ ei->description[MAX_ELEMENT_NAME_LEN] = 0;
+
+ Properties[element][EP_BITFIELD_BASE] = getFile32BitBE(file);
+ ReadUnusedBytesFromFile(file, 4); /* reserved for more base properties */
+
+ ei->num_change_pages = getFile8Bit(file);
+
+ /* some free bytes for future base property values and padding */
+ ReadUnusedBytesFromFile(file, 5);
+
+ chunk_size_expected = LEVEL_CHUNK_CUS4_SIZE(ei->num_change_pages);
+ if (chunk_size_expected != chunk_size)
+ {
+ ReadUnusedBytesFromFile(file, chunk_size - 48);
+ return chunk_size_expected;
+ }
+
+ /* read custom property values */
+
+ ei->use_gfx_element = getFile8Bit(file);
+ ei->gfx_element = checkLevelElement(getFile16BitBE(file));
+
+ ei->collect_score = getFile8Bit(file);
+ ei->collect_count = getFile8Bit(file);
+
+ ei->push_delay_fixed = getFile16BitBE(file);
+ ei->push_delay_random = getFile16BitBE(file);
+ ei->move_delay_fixed = getFile16BitBE(file);
+ ei->move_delay_random = getFile16BitBE(file);
+
+ ei->move_pattern = getFile16BitBE(file);
+ ei->move_direction_initial = getFile8Bit(file);
+ ei->move_stepsize = getFile8Bit(file);
+
+ ei->slippery_type = getFile8Bit(file);
+
+ for(y=0; y<3; y++)
+ for(x=0; x<3; x++)
+ ei->content[x][y] = checkLevelElement(getFile16BitBE(file));
+
+ /* some free bytes for future custom property values and padding */
+ ReadUnusedBytesFromFile(file, 12);
+
+ /* read change property values */
+
+ setElementChangePages(ei, ei->num_change_pages);
+
+ for (i=0; i < ei->num_change_pages; i++)
+ {
+ struct ElementChangeInfo *change = &ei->change_page[i];
+
+ /* always start with reliable default values */
+ setElementChangeInfoToDefaults(change);
+
+ change->events = getFile32BitBE(file);
+
+ change->target_element = checkLevelElement(getFile16BitBE(file));
+
+ change->delay_fixed = getFile16BitBE(file);
+ change->delay_random = getFile16BitBE(file);
+ change->delay_frames = getFile16BitBE(file);
+
+ change->trigger_element = checkLevelElement(getFile16BitBE(file));
+
+ change->explode = getFile8Bit(file);
+ change->use_content = getFile8Bit(file);
+ change->only_complete = getFile8Bit(file);
+ change->use_random_change = getFile8Bit(file);
+
+ change->random = getFile8Bit(file);
+ change->power = getFile8Bit(file);
+
+ for(y=0; y<3; y++)
+ for(x=0; x<3; x++)
+ change->content[x][y] = checkLevelElement(getFile16BitBE(file));
+
+ change->can_change = getFile8Bit(file);
+
+ change->sides = getFile8Bit(file);
+
+ if (change->sides == CH_SIDE_NONE) /* correct empty sides field */
+ change->sides = CH_SIDE_ANY;
+
+ /* some free bytes for future change property values and padding */
+ ReadUnusedBytesFromFile(file, 8);
+ }
+
+ /* mark this custom element as modified */
+ ei->modified_settings = TRUE;
+
+ return chunk_size;
+}
+
+void LoadLevelFromFilename(struct LevelInfo *level, char *filename)
+{
+ char cookie[MAX_LINE_LEN];
+ char chunk_name[CHUNK_ID_LEN + 1];
+ int chunk_size;
+ FILE *file;
+
+ /* always start with reliable default values */
+ setLevelInfoToDefaults(level);
+
+ if (!(file = fopen(filename, MODE_READ)))
+ {
+ level->no_level_file = TRUE;
+
+ if (level != &level_template)
+ Error(ERR_WARN, "cannot read level '%s' - creating new level", filename);
+
+ return;
+ }
+
+ getFileChunkBE(file, chunk_name, NULL);
+ if (strcmp(chunk_name, "RND1") == 0)
+ {
+ getFile32BitBE(file); /* not used */
+
+ getFileChunkBE(file, chunk_name, NULL);
+ if (strcmp(chunk_name, "CAVE") != 0)
+ {
+ Error(ERR_WARN, "unknown format of level file '%s'", filename);
+ fclose(file);
+ return;
+ }
+ }
+ else /* check for pre-2.0 file format with cookie string */
+ {
+ strcpy(cookie, chunk_name);
+ fgets(&cookie[4], MAX_LINE_LEN - 4, file);
+ if (strlen(cookie) > 0 && cookie[strlen(cookie) - 1] == '\n')
+ cookie[strlen(cookie) - 1] = '\0';
+
+ if (!checkCookieString(cookie, LEVEL_COOKIE_TMPL))
+ {
+ 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;
+ }
+
+ /* pre-2.0 level files have no game version, so use file version here */
+ level->game_version = level->file_version;
+ }
+
+ 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 },
+ { "BODY", -1, LoadLevel_BODY },
+ { "CONT", -1, LoadLevel_CONT },
+ { "CNT2", LEVEL_CHUNK_CNT2_SIZE, LoadLevel_CNT2 },
+ { "CNT3", -1, LoadLevel_CNT3 },
+ { "CUS1", -1, LoadLevel_CUS1 },
+ { "CUS2", -1, LoadLevel_CUS2 },
+ { "CUS3", -1, LoadLevel_CUS3 },
+ { "CUS4", -1, LoadLevel_CUS4 },
+ { 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);
+ }