Unity中EventTrigger的几种使用方式
说起EventTrigger事件触发器,它的使用可以说是无处不在,EventTrigger继承了很多的事件接口,这些接口对我们开发是十分有用的。弄懂EventTrigger在以后开发游戏过程中可以说是事半功倍。
namespace UnityEngine.EventSystems
{
[AddComponentMenu ("Event/Event Trigger")]
public class EventTrigger : MonoBehaviour, IEventSystemHandler, IPointerEnterHandler, IPointerExitHandler, IPointerDownHandler, IPointerUpHandler, IPointerClickHandler, IBeginDragHandler, IInitializePotentialDragHandler, IDragHandler, IEndDragHandler, IDropHandler, IScrollHandler, IUpdateSelectedHandler, ISelectHandler, IDeselectHandler, IMoveHandler, ISubmitHandler, ICancelHandler
{
//
// Fields
//
[Obsolete ("Please use triggers instead (UnityUpgradable) -> triggers", true)]
public List<EventTrigger.Entry> delegates;
//
// Properties
//
public List<EventTrigger.Entry> triggers {
get;
set;
}
//
// Constructors
//
protected EventTrigger ();
//
// Methods
//
private void Execute (EventTriggerType id, BaseEventData eventData);
public virtual void OnBeginDrag (PointerEventData eventData);
public virtual void OnCancel (BaseEventData eventData);
public virtual void OnDeselect (BaseEventData eventData);
public virtual void OnDrag (PointerEventData eventData);
public virtual void OnDrop (PointerEventData eventData);
public virtual void OnEndDrag (PointerEventData eventData);
public virtual void OnInitializePotentialDrag (PointerEventData eventData);
public virtual void OnMove (AxisEventData eventData);
public virtual void OnPointerClick (PointerEventData eventData);
public virtual void OnPointerDown (PointerEventData eventData);
public virtual void OnPointerEnter (PointerEventData eventData);
public virtual void OnPointerExit (PointerEventData eventData);
public virtual void OnPointerUp (PointerEventData eventData);
public virtual void OnScroll (PointerEventData eventData);
public virtual void OnSelect (BaseEventData eventData);
public virtual void OnSubmit (BaseEventData eventData);
public virtual void OnUpdateSelected (BaseEventData eventData);
//
// Nested Types
//
[Serializable]
public class Entry
{
public EventTriggerType eventID;
public EventTrigger.TriggerEvent callback;
public Entry ();
}
[Serializable]
public class TriggerEvent : UnityEvent<BaseEventData>
{
public TriggerEvent ();
}
}
}
using UnityEngine;
using System.Collections;
using System.Collections.Generic;using UnityEngine.Events;
using UnityEngine.EventSystems;
public class GameManager : MonoBehaviour
{
void Start()
{
UnityAction<BaseEventData> click = new UnityAction<BaseEventData> (MyClick);
EventTrigger.Entry myclick = new EventTrigger.Entry ();
myclick.eventID = EventTriggerType.PointerClick;
myclick.callback.AddListener (click);
EventTrigger trigger = gameObject.AddComponent<EventTrigger> ();
trigger.triggers.Add (myclick);
}
public void MyClick(BaseEventData data)
{
Debug.Log ("点击");
}
}
转载:http://www.cnblogs.com/springword/p/6039639.html