void upd_vis(struct level *lvl, struct player *p);
void cell_to_pos(struct level *lvl, int cx, int cy, int32_t *px, int32_t *py);
void upd_vis(struct level *lvl, struct player *p);
void cell_to_pos(struct level *lvl, int cx, int cy, int32_t *px, int32_t *py);