文章目录

• 1.代码
• 2.使用方式
• 3.注意事项

  1.代码

  using System;
  using System.Collections;
  using System.Collections.Generic;
  using UnityEngine;
  // 播放Animator并加入播放完成回调。
  [RequireComponent(typeof(Animator))]
  public class AnimatorCallback : MonoBehaviour
  {
      private string startFunName = "StartCallBack";
      private string endFunName = "EndCallBack";
      private Animator mAnim;
      private AnimatorOverrideController mController;
      private Dictionary mClipDic = new Dictionary();
      private Action endCallBack;             // 动画结束回调
      private Action startCallBack;           // 动画开始回调
      private AnimationEvent endEvt;          // 结束帧
      private AnimationEvent startEvt;        // 结束帧
      public void Awake()
      {
          mController = new AnimatorOverrideController();
          mAnim = transform.GetComponent();
          ResetEvent();
          mController.runtimeAnimatorController = mAnim.runtimeAnimatorController;
      }
      public void Play(string animName, Action beginAction = null, Action endAction = null)
      {
          startCallBack = beginAction;
          endCallBack = endAction;
          if (!mClipDic.ContainsKey(animName))
          {
              mClipDic.Add(animName, mController[animName]);
              endEvt = new AnimationEvent();
              endEvt.time = mClipDic[animName].length;
              startEvt = new AnimationEvent();
              startEvt.time = 0;
              endEvt.functionName = endFunName;
              startEvt.functionName = startFunName;
              mClipDic[animName].AddEvent(endEvt);
              mClipDic[animName].AddEvent(startEvt);
          }
          if (!mAnim.enabled) mAnim.enabled = true;
          mAnim.Play(animName, 0, 0);
      }
      private void EndCallBack()
      {
          if (endCallBack != null)
              endCallBack.Invoke();
      }
      private void StartCallBack()
      {
          if (startCallBack != null)
              startCallBack.Invoke();
      }
      #region help
      // 主要是为了防止已用的动画帧事件被移除
      private void ResetEvent()
      {
          foreach (var clip in mAnim.runtimeAnimatorController.animationClips)
          {
              List evts = new List();
              foreach (var curEvt in clip.events)
              {
                  var newEvt = new AnimationEvent();
                  if (curEvt.functionName.Equals(startFunName) || curEvt.functionName.Equals(endFunName))
                      continue;
                  CloneEvent(newEvt, curEvt);
                  evts.Add(newEvt);
              }
              clip.events = null;
              foreach (var evt in evts)
              {
                  clip.AddEvent(evt);
              }
              evts = null;
          }
      }
      private void CloneEvent(AnimationEvent newEvt, AnimationEvent oldEvt)
      {
          newEvt.functionName = oldEvt.functionName;
          newEvt.floatParameter = oldEvt.floatParameter;
          newEvt.intParameter = oldEvt.intParameter;
          newEvt.objectReferenceParameter = oldEvt.objectReferenceParameter;
          newEvt.time = oldEvt.time;
      }
      #endregion
  }
  

  2.使用方式

  1. 在需要调用事件的Animator物体上添加上面的脚本
  2. 调用Play方法

  3.注意事项

  如果你将Animator的某个AnimationClip的Speed设置为了-1（即倒播），动画的开始播放事件和结束播放事件任然是对应的开始帧和结束帧。