选择UI或场景中的物体

曾经终败给现在 2023-09-26 09:09 2阅读 0赞

using System.Collections;
    using System.Collections.Generic;
    using UnityEngine;
    using UnityEngine.UI;
    using UnityEngine.EventSystems;
    using UnityEngine.SceneManagement;
    using UnityEditor;
    
    public class SelctUIObj : MonoBehaviour
    {
        
        private List<RaycastResult> list = new List<RaycastResult>();//获取当前鼠标点击的UI对象
    
        private void Update()
        {
        
              
            if(Input.GetMouseButtonDown(0))
            {
        
                GameObject clickObj = null;
                if (EventSystem.current.IsPointerOverGameObject())//点的是UI，否则是场景中
                {
        
                    clickObj = GetCurrentSelectGameObject();
                }
                else
                {
        
                    clickObj = ClickScene();
                }
    
                if (clickObj == null)
                {
        
                    print("此时没有点击对象");
                    return;
                }
                else
                {
        
                    print(clickObj.name);
                }
            }
           
        }
        //获取当前选择的物体
        public GameObject GetCurrentSelectGameObject()
        {
        
            PointerEventData eventData = new PointerEventData(EventSystem.current);
            eventData.position = Input.mousePosition;
            EventSystem.current.RaycastAll(eventData, list);
    
            var raycast = FindFirstRaycast(list);
    
            var obj = ExecuteEvents.GetEventHandler<IEventSystemHandler>(raycast.gameObject);
    
            if (obj == null)
            {
        
                obj = raycast.gameObject;
            }
            return obj;
        }
        //找到该LIST中的第一个物体
        private RaycastResult FindFirstRaycast(List<RaycastResult> list)
        {
        
            for (var i = 0; i < list.Count; ++i)
            {
        
                if (list[i].gameObject == null)
                    continue;
    
                return list[i];
            }
            return new RaycastResult();
        }
    
        //此处添加后，可以点击场景中的物体
        private GameObject ClickScene()
        {
        
        	//从摄像头发出到鼠标位置的一条射线用来检测，获取检测到的对象
            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
            RaycastHit hit;
            if (Physics.Raycast(ray, out hit))
            {
        
                GameObject go = hit.collider.gameObject;
                return go;
            }
    
            return null;
        }
    }

![在这里插入图片描述][e6cfd734a72b4ee8b71b822e2f589dd2.png]  
如上图，玩家可以导入该包，在场景中可以预览点击的是场景中对象还是UI中的对象

[这是包的地址][Link 1]  
未来也会在csdn里面进行更新自己的开发日志，也可能会同步在Gitee中

[e6cfd734a72b4ee8b71b822e2f589dd2.png]: https://img-blog.csdnimg.cn/e6cfd734a72b4ee8b71b822e2f589dd2.png
[Link 1]: https://gitee.com/aTieD1523/DailyTool.git