-extern texture_type img_bkgd, img_bkgd_tile[2][4], img_solid[4], img_brick[2];
-
-void level_default (st_level* plevel);
-int level_load (st_level* plevel, const char * subset, int level);
-void level_parse (st_level* plevel, lisp_object_t* cursor);
-int level_load (st_level* plevel, const char* filename);
-void level_save (st_level* plevel, const char * subset, int level);
-void level_free (st_level* plevel);
-void level_load_gfx (st_level* plevel);
-void level_change (st_level* plevel, float x, float y, int tm, unsigned int c);
-void level_change_size (st_level* plevel, int new_width);
-void level_load_song(st_level* plevel);
-void level_free_gfx();
-void level_load_image(texture_type* ptexture, std::string theme, const char * file, int use_alpha);
-void level_free_song(void);
+ /** Load data for this level:
+ Returns -1, if the loading of the level failed. */
+ int load(const std::string& filename);
+
+ void load_gfx();
+ void free_gfx();
+
+ void load_song();
+ void free_song();
+ MusicRef get_level_music();
+ MusicRef get_level_music_fast();
+
+ void save(const char* subset, int level);
+
+ /** Edit a piece of the map! */
+ void change(float x, float y, int tm, unsigned int c);
+
+ /** Resize the level to a new width */
+ void change_size (int new_width);
+
+ /** Return the id of the tile at position x/y */
+ unsigned int gettileid(float x, float y);
+
+ void load_image(Surface** ptexture, std::string theme, const char * file, int use_alpha);
+};