stock find_closes_enemy(ent)
{
    new enemy, Float:dist, Float:distmin, Float:origin[3], Float:originT[3]
    pev(ent, pev_origin, origin)
    origin[2] += 120.0
    
    for(new id=1; id<=32; id++)
    {
        if (!is_user_alive(id)) continue;

        dist = entity_range(ent, id)
        pev(id, pev_origin, originT)
        if ((!distmin || dist <= distmin))
        {
            distmin = dist
            enemy = id
        }
    }    

    return enemy
}