+
+#define IS_BD_PLAYER_ELEMENT(e) ((e) == EL_BD_INBOX || \
+ (e) == EL_BD_PLAYER || \
+ (e) == EL_BD_PLAYER_WITH_BOMB || \
+ (e) == EL_BD_PLAYER_GLUED || \
+ (e) == EL_BD_PLAYER_STIRRING)
+
+#define IS_SOKOBAN_OBJECT_OR_FIELD(e) ((e) == EL_SOKOBAN_OBJECT || \
+ (e) == EL_SOKOBAN_FIELD_EMPTY || \
+ (e) == EL_SOKOBAN_FIELD_FULL)
+