public class EventDispatcher : MonoBehaviour
{
    public delegate void EventHandler(GameObject e);//定义委托
    public event EventHandler MouseOver;
    void Start()
    {
        OnMouseOver();
    }
    void OnMouseOver()
    {
        if (MouseOver != null)
        {
            MouseOver(this.gameObject);//传递参数
        }
    }
}
public class EventDis : MonoBehaviour {

    public GameObject game;
    EventDispatcher EventHand;
        void Start () {
                EventHand = game.GetComponent();
        }
    void Listener(GameObject g) 
    {
        Debug.Log(g.name);        
    }
    void OnMouseDown()
    {
        EventHand.MouseOver += Listener;//实现委托
    }
}

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