+
+boolean LoadNativeLevel_BD(char *filename, int level_pos, boolean level_info_only)
+{
+ static char *filename_loaded = NULL;
+
+ if (filename_loaded == NULL || !strEqual(filename, filename_loaded))
+ {
+ if (!gd_caveset_load_from_file(filename))
+ {
+ if (!level_info_only)
+ Warn("cannot load BD cave set from file '%s'", filename);
+
+ return FALSE;
+ }
+
+ setString(&filename_loaded, filename);
+ }
+
+ if (level_pos < 0 || level_pos >= 5 * gd_caveset_count())
+ {
+ Warn("invalid level position %d in BD cave set", level_pos);
+
+ return FALSE;
+ }
+
+ native_bd_level.cave_nr = level_pos % gd_caveset_count();
+ native_bd_level.level_nr = level_pos / gd_caveset_count();
+
+ if (native_bd_level.cave != NULL)
+ gd_cave_free(native_bd_level.cave);
+
+ // get selected cave, prepared for playing
+ native_bd_level.cave = gd_get_prepared_cave_from_caveset(native_bd_level.cave_nr,
+ native_bd_level.level_nr);
+
+ // set better initial cave speed (to set better native replay tape length)
+ set_initial_cave_speed(native_bd_level.cave);
+
+ native_bd_level.loaded_from_caveset = TRUE;
+
+ // check if this cave has any replays
+ if (native_bd_level.cave->replays != NULL)
+ {
+ GList *item = native_bd_level.cave->replays;
+
+ // try to find replay that was recorded for this difficulty level
+ while (item != NULL &&
+ (item->data == NULL ||
+ ((GdReplay *)item->data)->success == FALSE ||
+ ((GdReplay *)item->data)->level != native_bd_level.level_nr))
+ item = item->next;
+
+ // matching replay found
+ if (item != NULL)
+ native_bd_level.replay = (GdReplay *)item->data;
+ }
+
+ return TRUE;
+}