}
            // If the monster can't leave the level, make it start
            // fleeing instead.
            if (mon->travel_target == MTRAV_UNREACHABLE)
            {
                mon->foe = MHITYOU;
                mon->target_x = you.x_pos;
                mon->target_y = you.y_pos;
                mon->travel_target = MTRAV_NONE;
                new_beh = BEH_FLEE;
                break;