Unity中EventTrigger使用

• 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
  
      } 
      
  }