UGUI序列帧动画

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using UnityEngine; using System.Collections; using System.Collections.Generic; using UnityEngine.UI; using System;   [RequireComponent(typeof(Image))] public class UGUISpriteAnimation : MonoBehaviour {     private Image ImageSource;     private int mCurFrame = 0;     private float mDelta = 0;       public float FPS = 5;     public List<Sprite> SpriteFrames;     public bool IsPlaying = false;     public bool Foward = true;     public bool AutoPlay = false;     public bool Loop = false;       public int FrameCount     {         get         {             return SpriteFrames.Count;         }     }       void Awake()     {         ImageSource = GetComponent<Image>();     }       void Start()     {         if (AutoPlay)         {             Play();         }         else         {             IsPlaying = false;         }     }       private void SetSprite(int idx)     {         ImageSource.sprite = SpriteFrames[idx];         ImageSource.SetNativeSize();     }       public void Play()     {         IsPlaying = true;         Foward = true;     }       public void PlayReverse()     {         IsPlaying = true;         Foward = false;     }       void Update()     {         if (!IsPlaying || 0 == FrameCount)         {             return;         }           mDelta += Time.deltaTime;         if (mDelta > 1 / FPS)         {             mDelta = 0;             if(Foward)             {                 mCurFrame++;             }             else             {                 mCurFrame--;             }               if (mCurFrame >= FrameCount)             {                 if (Loop)                 {                     mCurFrame = 0;                 }                 else                 {                     IsPlaying = false;                     return;                 }             }             else if (mCurFrame<0)             {                 if (Loop)                 {                     mCurFrame = FrameCount-1;                 }                 else                 {                     IsPlaying = false;                     return;                 }                       }                           SetSprite(mCurFrame);         }     }       public void Pause()     {         IsPlaying = false;     }       public void Resume()     {         if (!IsPlaying)         {             IsPlaying = true;         }     }       public void Stop()     {         mCurFrame = 0;         SetSprite(mCurFrame);         IsPlaying = false;     }       public void Rewind()     {         mCurFrame = 0;         SetSprite(mCurFrame);         Play();     } }