void update_screen(int priority,
		   char *msg,
		   enum pic_type pic_on_screen_val,
		   boolean crit_path_button_enabled);

void alloc_draw_structs(void);

void init_draw_coords(float clb_width);

void set_graphics_state(boolean show_graphics_val,
			int gr_automode_val,
			enum e_route_type route_type);
