public void ShowAttackTarget (GameUnit attacker, int range)
{
this.attacker = attacker;
this.range = range;
for (int i = 0; i < unitList.Count; i++) {
GameUnit temp = unitList [i];
if (attacker.IsEnemy (temp) == true) {
if (Mathf.Abs (temp.X - attacker.X) <= range && Mathf.Abs (temp.Y - attacker.Y) <= range) {
temp.ShowAttactedState ();
}
}
}
}