void Start()
{
HydraHead head = GetComponent <HydraHead>();
head.onHydraHeadDie.AddListener(OnDie_Head);
head.onHydraHeadDie.AddListener(OnDie_Coin);
}
private void Awake()
{
hydraHead = GetComponent <HydraHead>();
maxYFiller = healthFiller.transform.localScale.y;
}