STAIRS
levl[(int)xdnstair][(int)ydnstair].typ = STAIRS;
levl[(int)xupstair][(int)yupstair].typ = STAIRS;
} while(m_at(mx,my) || levl[(int)mx][(int)my].typ == STAIRS);
} while(t_at(mx, my) || levl[(int)mx][(int)my].typ == STAIRS);
levl[(int)xupstair][(int)yupstair].typ = STAIRS;
|| levl[(int)u.ux][(int)u.uy].typ == STAIRS))) {