Function remove_mon_from_reg

src/region.c:191–202

* Remove a monster from the region list (it left or died...) */

 * Remove a monster from the region list (it left or died...)
 */
void
remove_mon_from_reg(NhRegion *reg, struct monst *mon)
{
    int i;

    for (i = 0; i < reg->n_monst; i++)
        if (reg->monsters[i] == mon->m_id) {
            reg->n_monst--;
            reg->monsters[i] = reg->monsters[reg->n_monst];
            return;
        }
}

/*
 * Check if a monster is inside the region.