Unity屏幕射线检测与UI冲突的解决办法

Unity屏幕射线检测与UI冲突的解决办法
屏幕射线的使用的就不介绍了，贴代码

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

public class Test : MonoBehaviour
{
    // Start is called before the first frame update
    void Start()
    {
        
    }
    RaycastHit hit;
    Ray ray;
    void Update()
    {
        if (Input.touchCount > 0)
        {
            if (!EventSystem.current.IsPointerOverGameObject(Input.GetTouch(0).fingerId)) {
                Debug.Log("没有点到UI");
                ray = Camera.main.ScreenPointToRay(Input.GetTouch(0).position);
                if (Physics.Raycast(ray, out hit, 1000, 1 << LayerMask.NameToLayer("Monster")))
                {
                    //TODO
                }
            }
            else
            {
                Debug.Log("点到UI");

            }

        }
      
    }
}

这里的EventSystem.current.IsPointerOverGameOb