void OnTriggerEnter2D(Collider2D other)
{
if (other.tag == "Bullet" || other.tag == "Boomerang")
{
HitScript HS = other.GetComponent <HitScript> ();
if ((HS.GetOwner() == PCS.GetPlayerNum()) && HS.IsBoomerang)
{
AS.ReloadSingle();
HS.KillBoomerang();
}
}
}