+ 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.
+ Since 2.0.1, the game engine version is now directly stored
+ in the level file (chunk "VERS"), so there is no need anymore
+ to set the game version from the file version (except for old,
+ pre-2.0 levels, where the game version is still taken from the
+ file format version used to store the level -- see above). */
+
+ /* do some special adjustments to support older level versions */
+ 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");
+
+ /* player was faster than monsters in (pre-)1.0 levels */
+ level.double_speed = TRUE;
+ }
+
+ /* Default behaviour for EM style gems was "slippery" only in 2.0.1 */
+ if (level.game_version == VERSION_IDENT(2,0,1))
+ level.em_slippery_gems = TRUE;
+ }
+ else
+ {
+ /* Always use the latest version of the game engine for all but
+ user contributed and private levels; this allows for actual
+ corrections in the game engine to take effect for existing,
+ converted levels (from "classic" or other existing games) to
+ make the game emulation more accurate, while (hopefully) not
+ breaking existing levels created from other players. */
+
+ level.game_version = GAME_VERSION_ACTUAL;
+
+ /* Set special EM style gems behaviour: EM style gems slip down from
+ normal, steel and growing wall. As this is a more fundamental change,
+ it seems better to set the default behaviour to "off" (as it is more
+ natural) and make it configurable in the level editor (as a property
+ of gem style elements). Already existing converted levels (neither
+ private nor contributed levels) are changed to the new behaviour. */
+
+ if (level.file_version < FILE_VERSION_2_0)
+ level.em_slippery_gems = TRUE;
+ }
+
+ /* map some elements which have changed in newer versions */
+ if (level.game_version <= VERSION_IDENT(2,2,0))
+ {
+ int x, y;
+
+ /* map game font elements */
+ for(y=0; y<level.fieldy; y++)
+ {
+ for(x=0; x<level.fieldx; x++)
+ {
+ int element = Ur[x][y];
+
+ if (element == EL_CHAR('['))
+ element = EL_CHAR_AUMLAUT;
+ else if (element == EL_CHAR('\\'))
+ element = EL_CHAR_OUMLAUT;
+ else if (element == EL_CHAR(']'))
+ element = EL_CHAR_UUMLAUT;
+ else if (element == EL_CHAR('^'))
+ element = EL_CHAR_COPYRIGHT;
+
+ Feld[x][y] = Ur[x][y] = element;
+ }
+ }
+ }
+
+ /* determine border element for this level */
+ SetBorderElement();
+}
+
+void LoadLevel(int level_nr)
+{
+ char *filename = getLevelFilename(level_nr);
+
+ LoadLevelFromFilename(filename);
+ InitElementPropertiesEngine(level.game_version);
+}
+
+static void SaveLevel_VERS(FILE *file, struct LevelInfo *level)
+{
+ putFileVersion(file, level->file_version);
+ putFileVersion(file, level->game_version);
+}
+
+static void SaveLevel_HEAD(FILE *file, struct LevelInfo *level)
+{
+ int i, x, y;
+
+ fputc(level->fieldx, file);
+ fputc(level->fieldy, file);
+
+ putFile16BitBE(file, level->time);
+ putFile16BitBE(file, level->gems_needed);
+
+ 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_EMPTY :
+ level->yamyam_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_EMPTY : 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);
+ fputc((level->em_slippery_gems ? 1 : 0), file);
+
+ fputc((level->use_custom_template ? 1 : 0), file);
+
+ WriteUnusedBytesToFile(file, LEVEL_HEADER_UNUSED);
+}
+
+static void SaveLevel_AUTH(FILE *file, struct LevelInfo *level)