unity 3D物体添加 点击事件

方法一：物体 挂在 EventTrigger  选择 PointerClick  注册响应方法

相机 必须挂在 PhysicsRaycaster

场景中必须有：EventSystem（一般创建UI自动添加的）

物体 必须有 Collider

简单粗暴版（相机 必须挂在 PhysicsRaycaster）

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


public class ObjClickEvent : MonoBehaviour
{
    public GameObject[] cube1; //3D物体集合

    private void Start()
    {
        //为3D物体添加点击事件
        for (int i = 0; i < cube1.Length; i++)
        {
            AddObjectClickEvent(cube1[i]);
        }
    }
    public void OnClick()
    {
        Debug.Log("OnClick");
        transform.GetComponent<HighlightEffect>().highlighted = false;
    }

    public void AddObjectClickEvent(GameObject itemObject)
    {
        var box = itemObject.GetComponent<BoxCollider>();
        if (box == null)
        {
            box = itemObject.AddComponent<BoxCollider>();
        }
        var item = itemObject.GetComponent<ObjItme>();
        if (item == null)
        {
            item = itemObject.AddComponent<ObjItme>();
        }

        EventTrigger trigger = itemObject.GetComponent<EventTrigger>();
        if (trigger == null)
        {
            trigger = itemObject.AddComponent<EventTrigger>();
        }
        EventTrigger.Entry entry = new EventTrigger.Entry();
        entry.eventID = EventTriggerType.PointerClick;
        entry.callback.AddListener(item.OnClickItem);
        trigger.triggers.Clear();
        trigger.triggers.Add(entry);
    }
}