在Unity中，点击场景中的模型我们往往需要检测是否点击在了UI上，这时我们需要进行一系列的判断，往往效果还不好，因此我在场景中模型的点击也使用了EventTrigger,EventTrigger我们在UI上的使用比较常见，但是它也可以用于场景点击，并且能屏蔽点击到UI又响应了模型的点击事件，以下是点击事件的组件脚本

using UnityEngine;
using UnityEngine.EventSystems;
public class EventTriggerListener : EventTrigger
{
    public delegate void VoidDelegate();
    public delegate void EventDelegate(BaseEventData baseEventData);
    public delegate void BoolDelegate(bool state);
    public delegate void FloatDelegate(float delta);
    public delegate void VectorDelegate(Vector2 delta);
    public delegate void ObjectDelegate(GameObject obj);
    public delegate void KeyCodeDelegate(KeyCode key);

    public VoidDelegate onClick;
    public EventDelegate onEventClick;
    public VoidDelegate onDown;
    public VoidDelegate onEnter;
    public VoidDelegate onExit;
    public VoidDelegate onUp;
    public VoidDelegate onSelect;
    public VoidDelegate onUpdateSelect;


    static public EventTriggerListener Add(Transform transform)
    {
        EventTriggerListener listener = transform.GetComponent<EventTriggerListener>();
        if (listener == null)
            listener = transform.gameObject.AddComponent<EventTriggerListener>();
        return listener;
    }

    public override void OnPointerClick(PointerEventData eventData)
    {
        if (onClick != null)
        {
            onClick();
        }
        if (onEventClick != null)
        {
            onEventClick(eventData);
        }
    }

    public override void OnPointerDown(PointerEventData eventData)
    {
        if (onDown != null)
            onDown();
    }

    public override void OnPointerEnter(PointerEventData eventData)
    {
        if (onEnter != null)
            onEnter();
    }

    public override void OnPointerExit(PointerEventData eventData)
    {
        if (onExit != null)
            onExit();
    }

    public override void OnPointerUp(PointerEventData eventData)
    {
        if (onUp != null)
            onUp();
    }

    public override void OnSelect(BaseEventData eventData)
    {
        if (onSelect != null)
            onSelect();
    }

    public override void OnUpdateSelected(BaseEventData eventData)
    {
        if (onUpdateSelect != null)
            onUpdateSelect();
    }
}

使用方法，只需要在模型对象上挂在脚本，该脚本注册下上面的脚本事件。

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

public class EnvironmentClick : MonoBehaviour
{
    private void Awake()
    {
        EventTriggerListener.Add(transform).onEventClick += OnGroundClick;
    }
   public void OnGroundClick(BaseEventData data)
    {
        if (Input.GetMouseButton(1)) return;
        if (Input.GetMouseButton(2)) return;

       //do something

    } 
    
}