UI渗透

using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;

public class Script_05_09 : MonoBehaviour, IPointerClickHandler, 
    IPointerDownHandler, IPointerUpHandler
{
    //监听点击
    public void OnPointerClick(PointerEventData eventData)
    {
        PassEvent(eventData, ExecuteEvents.submitHandler);
        PassEvent(eventData, ExecuteEvents.pointerClickHandler);
    }

    //监听按下
    public void OnPointerDown(PointerEventData eventData)
    {
        PassEvent(eventData, ExecuteEvents.pointerDownHandler);
    }

    //监听抬起
    public void OnPointerUp(PointerEventData eventData)
    {
        PassEvent(eventData, ExecuteEvents.pointerUpHandler);
    }

    public void PassEvent<T>(PointerEventData data,ExecuteEvents.EventFunction<T> function)
        where T:IEventSystemHandler
    {
        List<RaycastResult> results = new List<RaycastResult>();
        EventSystem.current.RaycastAll(data, results);
        GameObject current = data.pointerCurrentRaycast.gameObject;
        for(int i=0;i<results.Count;i++)
        {
            if(current!=results[i].gameObject)
            {
                ExecuteEvents.Execute(results[i].gameObject, data, function);
                //如果只想渗透到下一层，只需break即可
                //break;
            }
        }
    }


}