+/* ------------------------------------------------------------------------- */
+/* functions for loading SB level */
+/* ------------------------------------------------------------------------- */
+
+int getMappedElement_SB(int element_ascii, boolean use_ces)
+{
+ static struct
+ {
+ int ascii;
+ int sb;
+ int ce;
+ }
+ sb_element_mapping[] =
+ {
+ { ' ', EL_EMPTY, EL_CUSTOM_1 }, /* floor (space) */
+ { '#', EL_STEELWALL, EL_CUSTOM_2 }, /* wall */
+ { '@', EL_PLAYER_1, EL_CUSTOM_3 }, /* player */
+ { '$', EL_SOKOBAN_OBJECT, EL_CUSTOM_4 }, /* box */
+ { '.', EL_SOKOBAN_FIELD_EMPTY, EL_CUSTOM_5 }, /* goal square */
+ { '*', EL_SOKOBAN_FIELD_FULL, EL_CUSTOM_6 }, /* box on goal square */
+ { '+', EL_SOKOBAN_FIELD_PLAYER, EL_CUSTOM_7 }, /* player on goal square */
+#if 0
+ { '_', EL_INVISIBLE_STEELWALL, EL_CUSTOM_8 }, /* floor beyond border */
+#else
+ { '_', EL_INVISIBLE_STEELWALL, EL_FROM_LEVEL_TEMPLATE }, /* floor beyond border */
+#endif
+
+ { 0, -1, -1 },
+ };
+
+ int i;
+
+ for (i = 0; sb_element_mapping[i].ascii != 0; i++)
+ if (element_ascii == sb_element_mapping[i].ascii)
+ return (use_ces ? sb_element_mapping[i].ce : sb_element_mapping[i].sb);
+
+ return EL_UNDEFINED;
+}
+
+static void LoadLevelFromFileInfo_SB(struct LevelInfo *level,
+ struct LevelFileInfo *level_file_info)
+{
+ char *filename = level_file_info->filename;
+ char line[MAX_LINE_LEN], line_raw[MAX_LINE_LEN], previous_line[MAX_LINE_LEN];
+ char last_comment[MAX_LINE_LEN];
+ char level_name[MAX_LINE_LEN];
+ char *line_ptr;
+ FILE *file;
+ int num_levels_to_skip = level_file_info->nr - leveldir_current->first_level;
+ boolean read_continued_line = FALSE;
+ boolean reading_playfield = FALSE;
+ boolean got_valid_playfield_line = FALSE;
+ boolean invalid_playfield_char = FALSE;
+ boolean load_xsb_to_ces = check_special_flags("load_xsb_to_ces");
+ int file_level_nr = 0;
+ int line_nr = 0;
+ int x = 0, y = 0; /* initialized to make compilers happy */
+
+#if 0
+ printf("::: looking for level number %d [%d]\n",
+ level_file_info->nr, num_levels_to_skip);
+#endif
+
+ last_comment[0] = '\0';
+ level_name[0] = '\0';
+
+ if (!(file = fopen(filename, MODE_READ)))
+ {
+ level->no_valid_file = TRUE;
+
+ Error(ERR_WARN, "cannot read level '%s' -- using empty level", filename);
+
+ return;
+ }
+
+ while (!feof(file))
+ {
+ /* level successfully read, but next level may follow here */
+ if (!got_valid_playfield_line && reading_playfield)
+ {
+#if 0
+ printf("::: read complete playfield\n");
+#endif
+
+ /* read playfield from single level file -- skip remaining file */
+ if (!level_file_info->packed)
+ break;
+
+ if (file_level_nr >= num_levels_to_skip)
+ break;
+
+ file_level_nr++;
+
+ last_comment[0] = '\0';
+ level_name[0] = '\0';
+
+ reading_playfield = FALSE;
+ }
+
+ got_valid_playfield_line = FALSE;
+
+ /* read next line of input file */
+ if (!fgets(line, MAX_LINE_LEN, file))
+ break;
+
+ /* check if line was completely read and is terminated by line break */
+ if (strlen(line) > 0 && line[strlen(line) - 1] == '\n')
+ line_nr++;
+
+ /* cut trailing line break (this can be newline and/or carriage return) */
+ for (line_ptr = &line[strlen(line)]; line_ptr >= line; line_ptr--)
+ if ((*line_ptr == '\n' || *line_ptr == '\r') && *(line_ptr + 1) == '\0')
+ *line_ptr = '\0';
+
+ /* copy raw input line for later use (mainly debugging output) */
+ strcpy(line_raw, line);
+
+ if (read_continued_line)
+ {
+ /* append new line to existing line, if there is enough space */
+ if (strlen(previous_line) + strlen(line_ptr) < MAX_LINE_LEN)
+ strcat(previous_line, line_ptr);
+
+ strcpy(line, previous_line); /* copy storage buffer to line */
+
+ read_continued_line = FALSE;
+ }
+
+ /* if the last character is '\', continue at next line */
+ if (strlen(line) > 0 && line[strlen(line) - 1] == '\\')
+ {
+ line[strlen(line) - 1] = '\0'; /* cut off trailing backslash */
+ strcpy(previous_line, line); /* copy line to storage buffer */
+
+ read_continued_line = TRUE;
+
+ continue;
+ }
+
+ /* skip empty lines */
+ if (line[0] == '\0')
+ continue;
+
+ /* extract comment text from comment line */
+ if (line[0] == ';')
+ {
+ for (line_ptr = line; *line_ptr; line_ptr++)
+ if (*line_ptr != ' ' && *line_ptr != '\t' && *line_ptr != ';')
+ break;
+
+ strcpy(last_comment, line_ptr);
+
+#if 0
+ printf("::: found comment '%s' in line %d\n", last_comment, line_nr);
+#endif
+
+ continue;
+ }
+
+ /* extract level title text from line containing level title */
+ if (line[0] == '\'')
+ {
+ strcpy(level_name, &line[1]);
+
+ if (strlen(level_name) > 0 && level_name[strlen(level_name) - 1] == '\'')
+ level_name[strlen(level_name) - 1] = '\0';
+
+#if 0
+ printf("::: found level name '%s' in line %d\n", level_name, line_nr);
+#endif
+
+ continue;
+ }
+
+ /* skip lines containing only spaces (or empty lines) */
+ for (line_ptr = line; *line_ptr; line_ptr++)
+ if (*line_ptr != ' ')
+ break;
+ if (*line_ptr == '\0')
+ continue;
+
+ /* at this point, we have found a line containing part of a playfield */
+
+#if 0
+ printf("::: found playfield row in line %d\n", line_nr);
+#endif
+
+ got_valid_playfield_line = TRUE;
+
+ if (!reading_playfield)
+ {
+ reading_playfield = TRUE;
+ invalid_playfield_char = FALSE;
+
+ for (x = 0; x < MAX_LEV_FIELDX; x++)
+ for (y = 0; y < MAX_LEV_FIELDY; y++)
+ level->field[x][y] = getMappedElement_SB(' ', load_xsb_to_ces);
+
+ level->fieldx = 0;
+ level->fieldy = 0;
+
+ /* start with topmost tile row */
+ y = 0;
+ }
+
+ /* skip playfield line if larger row than allowed */
+ if (y >= MAX_LEV_FIELDY)
+ continue;
+
+ /* start with leftmost tile column */
+ x = 0;
+
+ /* read playfield elements from line */
+ for (line_ptr = line; *line_ptr; line_ptr++)
+ {
+ int mapped_sb_element = getMappedElement_SB(*line_ptr, load_xsb_to_ces);
+
+ /* stop parsing playfield line if larger column than allowed */
+ if (x >= MAX_LEV_FIELDX)
+ break;
+
+ if (mapped_sb_element == EL_UNDEFINED)
+ {
+ invalid_playfield_char = TRUE;
+
+ break;
+ }
+
+ level->field[x][y] = mapped_sb_element;
+
+ /* continue with next tile column */
+ x++;
+
+ level->fieldx = MAX(x, level->fieldx);
+ }
+
+ if (invalid_playfield_char)
+ {
+ /* if first playfield line, treat invalid lines as comment lines */
+ if (y == 0)
+ reading_playfield = FALSE;
+
+ continue;
+ }
+
+ /* continue with next tile row */
+ y++;
+ }
+
+ fclose(file);
+
+ level->fieldy = y;
+
+ level->fieldx = MIN(MAX(MIN_LEV_FIELDX, level->fieldx), MAX_LEV_FIELDX);
+ level->fieldy = MIN(MAX(MIN_LEV_FIELDY, level->fieldy), MAX_LEV_FIELDY);
+
+ if (!reading_playfield)
+ {
+ level->no_valid_file = TRUE;
+
+ Error(ERR_WARN, "cannot read level '%s' -- using empty level", filename);
+
+ return;
+ }
+
+ if (*level_name != '\0')
+ {
+ strncpy(level->name, level_name, MAX_LEVEL_NAME_LEN);
+ level->name[MAX_LEVEL_NAME_LEN] = '\0';
+
+#if 0
+ printf(":1: level name: '%s'\n", level->name);
+#endif
+ }
+ else if (*last_comment != '\0')
+ {
+ strncpy(level->name, last_comment, MAX_LEVEL_NAME_LEN);
+ level->name[MAX_LEVEL_NAME_LEN] = '\0';
+
+#if 0
+ printf(":2: level name: '%s'\n", level->name);
+#endif
+ }
+ else
+ {
+ sprintf(level->name, "--> Level %d <--", level_file_info->nr);
+ }
+
+ /* set all empty fields beyond the border walls to invisible steel wall */
+ for (y = 0; y < level->fieldy; y++) for (x = 0; x < level->fieldx; x++)
+ {
+ if ((x == 0 || x == level->fieldx - 1 ||
+ y == 0 || y == level->fieldy - 1) &&
+ level->field[x][y] == getMappedElement_SB(' ', load_xsb_to_ces))
+ FloodFillLevel(x, y, getMappedElement_SB('_', load_xsb_to_ces),
+ level->field, level->fieldx, level->fieldy);
+ }
+
+ /* set special level settings for Sokoban levels */
+
+ level->time = 0;
+ level->use_step_counter = TRUE;
+
+ if (load_xsb_to_ces)
+ {
+#if 1
+ /* !!! special global settings can now be set in level template !!! */
+#else
+ level->initial_player_stepsize[0] = STEPSIZE_SLOW;
+#endif
+
+ /* fill smaller playfields with padding "beyond border wall" elements */
+ if (level->fieldx < SCR_FIELDX ||
+ level->fieldy < SCR_FIELDY)
+ {
+ short field[level->fieldx][level->fieldy];
+ int new_fieldx = MAX(level->fieldx, SCR_FIELDX);
+ int new_fieldy = MAX(level->fieldy, SCR_FIELDY);
+ int pos_fieldx = (new_fieldx - level->fieldx) / 2;
+ int pos_fieldy = (new_fieldy - level->fieldy) / 2;
+
+ /* copy old playfield (which is smaller than the visible area) */
+ for (y = 0; y < level->fieldy; y++) for (x = 0; x < level->fieldx; x++)
+ field[x][y] = level->field[x][y];
+
+ /* fill new, larger playfield with "beyond border wall" elements */
+ for (y = 0; y < new_fieldy; y++) for (x = 0; x < new_fieldx; x++)
+ level->field[x][y] = getMappedElement_SB('_', load_xsb_to_ces);
+
+ /* copy the old playfield to the middle of the new playfield */
+ for (y = 0; y < level->fieldy; y++) for (x = 0; x < level->fieldx; x++)
+ level->field[pos_fieldx + x][pos_fieldy + y] = field[x][y];
+
+ level->fieldx = new_fieldx;
+ level->fieldy = new_fieldy;
+ }
+
+ level->use_custom_template = TRUE;
+ }
+}
+
+
+/* ------------------------------------------------------------------------- */
+/* functions for handling native levels */
+/* ------------------------------------------------------------------------- */
+
+static void LoadLevelFromFileInfo_EM(struct LevelInfo *level,
+ struct LevelFileInfo *level_file_info)
+{
+ if (!LoadNativeLevel_EM(level_file_info->filename))
+ level->no_valid_file = TRUE;
+}
+
+static void LoadLevelFromFileInfo_SP(struct LevelInfo *level,
+ struct LevelFileInfo *level_file_info)
+{
+ int pos = 0;
+
+ /* determine position of requested level inside level package */
+ if (level_file_info->packed)
+ pos = level_file_info->nr - leveldir_current->first_level;
+
+ if (!LoadNativeLevel_SP(level_file_info->filename, pos))
+ level->no_valid_file = TRUE;
+}
+
+void CopyNativeLevel_RND_to_Native(struct LevelInfo *level)
+{
+ if (level->game_engine_type == GAME_ENGINE_TYPE_EM)
+ CopyNativeLevel_RND_to_EM(level);
+ else if (level->game_engine_type == GAME_ENGINE_TYPE_SP)
+ CopyNativeLevel_RND_to_SP(level);
+}
+
+void CopyNativeLevel_Native_to_RND(struct LevelInfo *level)
+{
+ if (level->game_engine_type == GAME_ENGINE_TYPE_EM)
+ CopyNativeLevel_EM_to_RND(level);
+ else if (level->game_engine_type == GAME_ENGINE_TYPE_SP)
+ CopyNativeLevel_SP_to_RND(level);
+}
+
+void SaveNativeLevel(struct LevelInfo *level)
+{
+ if (level->game_engine_type == GAME_ENGINE_TYPE_SP)
+ {
+ char *basename = getSingleLevelBasenameExt(level->file_info.nr, "sp");
+ char *filename = getLevelFilenameFromBasename(basename);
+
+ CopyNativeLevel_RND_to_SP(level);
+ CopyNativeTape_RND_to_SP(level);
+
+ SaveNativeLevel_SP(filename);
+ }
+}
+
+