Function uescaped_shaft

src/trap.c:6659–6664

* Returns TRUE if you didn't fall through a hole or didn't * release a trap door */

 * release a trap door
 */
boolean
uescaped_shaft(struct trap *trap)
{
    return (trap && is_hole(trap->ttyp) && trap->tseen
            && u_at(trap->tx, trap->ty));
}

/* Destroy a trap that emanates from the floor. */
boolean