穿透UI （转载雨松老师）

 1 using System.Collections;
 2 using System.Collections.Generic;
 3 using UnityEngine;
 4 using UnityEngine.EventSystems;
 5 
 6 
 7 public class UIRaycastPass : MonoBehaviour,IPointerClickHandler ,IPointerDownHandler,IPointerUpHandler 
 8 {
 9     //监听按下
10     public void OnPointerDown(PointerEventData eventData)
11     {
12         PassEvent(eventData, ExecuteEvents.pointerDownHandler);
13     }
14 
15     //监听抬起
16     public void OnPointerUp(PointerEventData eventData)
17     {
18         PassEvent(eventData, ExecuteEvents.pointerUpHandler);
19     }
20 
21     //监听点击
22     public void OnPointerClick(PointerEventData eventData)
23     {
24         PassEvent(eventData, ExecuteEvents.submitHandler);
25         PassEvent(eventData, ExecuteEvents.pointerClickHandler);
26     }
27 
28 
29     //把事件透下去
30     public void PassEvent<T>(PointerEventData data, ExecuteEvents.EventFunction<T> function)
31         where T : IEventSystemHandler
32     {
33         List<RaycastResult> results = new List<RaycastResult>();
34         EventSystem.current.RaycastAll(data, results);
35         GameObject current = data.pointerCurrentRaycast.gameObject;
36         for (int i = 0; i < results.Count; i++)
37         {
38             if (current != results[i].gameObject)
39             {
40                 ExecuteEvents.Execute(results[i].gameObject, data, function);
41                 //RaycastAll后ugui会自己排序，如果你只想响应透下去的第一个响应，这里ExecuteEvents.Execute后直接break就行。
42                 //break;
43             }
44         }
45     }
46 
47 }

之后我用这个工具开发了一套引导流程，之后有机会写出来，有一些思路和实现