void Start()
{
// if (_player == null)
// _player.GetComponent<EventSystem>().AddListener(HPEvent.CHANGED, OnHealthChanged);
_player.GetComponent <EventSystem>().AddListener(HPEvent.CHANGED, OnHealthChanged);
// _player.GetComponent<EventSystem>().AddListener(HPEvent.HEALED, OnHeal);
_maxPlayerHealth = _player.GetComponent <Stats>().hp;
}
void Start()
{
_player.GetComponent <EventSystem>().AddListener(HPEvent.DIED, OnPlayerDied);
}