/// <summary>
/// On collision, apply damage to an IDestroyable
/// </summary>
/// <param name="collision"></param>
public void OnTriggerEnter2D(Collider2D collision)
{
IDestroyable des = collision.GetComponent <IDestroyable>();
if (des != null)
{
des.DestroyMe(damagePower);
}
}
