text: #include <allegro5/allegro.h>
  
  struct floor_type {
  	ALLEGRO_BITMAP *left;
  	ALLEGRO_BITMAP *mid;
  	ALLEGRO_BITMAP *right;
  	ALLEGRO_BITMAP *sign;
  };
  
  extern const struct floor_type *floor_types;
  extern size_t floor_types_count;
  
  void initialize_floor_types(void);
  