new void Awake()
{
base.Awake();
emission = particles.emission;
//TODO: make better or remove
//StartCoroutine(AwarenessLoop());
OnLevelUp.AddListener(NextLevel);
}
/// <summary>
/// Adds listener for level up event
/// </summary>
/// <param name="listener">listener for level up event</param>
public void AddLevelUpListener(UnityAction <int> listener)
{
levelUp.AddListener(listener);
}