#define MENU_LAND_Y 48

extern uint24_t menu_view_x;
extern uint8_t  menu_view_y;
extern uint8_t  menu_view_vy;
extern int16_t  menu_view_vx;
extern int24_t  menu_view_dx;

enum menu_status { MENU_NONE = 0, MENU_ENTERING = 1, MENU_VISIBLE = 2, MENU_LEAVING = 4 };

extern uint8_t  menu_level_status;
extern uint8_t  menu_level_x;
extern uint8_t  menu_level_y;
extern uint8_t  menu_level_ymax;
extern uint16_t menu_level_selection;

extern uint16_t menu_levels_count;

void menu(void);