void OnTriggerEnter2D(Collider2D col)
{
if (attack.self.targetTag == col.gameObject.tag && 0 < hitCount)
{
UnitColliderDamage colliderDamage = col.gameObject.GetComponent <UnitColliderDamage>();
if (null != colliderDamage)
{
hitCount -= 1;
attack.Damage(colliderDamage.unit);
}
}
}
