csharp 遍历光线投射所有穿透的对象

Posted 2021-05-12

using UnityEngine;
using System.Collections;
using UnityEngine.EventSystems;
using UnityEngine.UI;
using System.Collections.Generic;
 
public class Test : MonoBehaviour,IPointerClickHandler ,IPointerDownHandler,IPointerUpHandler
{ 
 
    //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);
    }
 
    //监听点击
    public void OnPointerClick(PointerEventData eventData)
    {
        PassEvent(eventData,ExecuteEvents.submitHandler);
        PassEvent(eventData,ExecuteEvents.pointerClickHandler);
    }
 
 
    //把事件透下去
    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);
                //RaycastAll后ugui会自己排序，如果你只想响应透下去的最近的一个响应，这里ExecuteEvents.Execute后直接break就行。
            }
        }
    }
 
 
}