// If _mons_find_level_exits() is ever expanded to handle more trap
// types, this should be expanded along with it.
static void _mons_handle_trap_level_exit(const monsters *mon, trap_type trap)
{
    switch (trap)
    {
        case TRAP_TELEPORT:
            simple_monster_message(mon, " disappears!");
            break;
        case TRAP_SHAFT:
            simple_monster_message(mon, " falls through a shaft!");
            break;
        default:
            break;
    }
}

                if (mon->travel_target == MTRAV_TRAP)
                {
                    _mons_handle_trap_level_exit(
                        mon, trap_type_at_xy(mon->target_x, mon->target_y));
                }
                else if (mon->travel_target == MTRAV_SUBMERSIBLE)
                    mon->add_ench(ENCH_SUBMERGED);