[UGUI]帧动画

ImageFrameAnimation.cs

 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.UI;

 [RequireComponent(typeof(Image))]
 public class ImageFrameAnimation : MonoBehaviour {

     private Image image;
     private int nowFrame = ;
     private float timer = ;

     private List<Sprite> spriteList;
     private bool isPlay = false;
     private bool isForward = true;
     private bool isLoop = true;
     private float interval = 0.1f;

     void Update ()
     {
         if (!isPlay || (spriteList.Count == ))
         {
             return;
         }

         timer += Time.deltaTime;
         if (timer > interval)
         {
             timer = ;
             if (isForward)
             {
                 nowFrame++;
             }
             else
             {
                 nowFrame--;
             }

             if (nowFrame >= spriteList.Count)
             {
                 if (isLoop)
                 {
                     nowFrame = ;
                 }
                 else
                 {
                     isPlay = false;
                     return;
                 }
             }
             else if(nowFrame < )
             {
                 if (isLoop)
                 {
                     nowFrame = spriteList.Count - ;
                 }
                 else
                 {
                     isPlay = false;
                     return;
                 }
             }

             UpdateSprite();
         }
     }

     private void UpdateSprite()
     {
         UpdateSprite(nowFrame);
     }

     private void UpdateSprite(int index)
     {
         image.sprite = spriteList[index];
     }

     public void Init(Sprite[] spriteArray, bool isPlay = true, bool isForward = true, bool isLoop = true, float interval = 0.1f)
     {
         List<Sprite> spriteList = new List<Sprite>();
         spriteList.AddRange(spriteArray);
         Init(spriteList, isPlay, isForward, isLoop, interval);
     }

     public void Init(List<Sprite> spriteList, bool isPlay = true, bool isForward = true, bool isLoop = true, float interval = 0.1f)
     {
         this.spriteList = spriteList;
         this.isPlay = isPlay;
         this.isForward = isForward;
         this.isLoop = isLoop;
         this.interval = interval;

         if (image == null)
         {
             image = GetComponent<Image>();
         }
         if (isForward)
         {
             nowFrame = ;
         }
         else
         {
             nowFrame = spriteList.Count - ;
         }
         timer = ;

         UpdateSprite();
     }

     public void Play()
     {
         isPlay = true;
         isForward = true;
     }

     public void PlayReverse()
     {
         isPlay = true;
         isForward = false;
     }

     public void Pause()
     {
         isPlay = false;
     }
 }

测试：

 using UnityEngine;
 using System.Collections.Generic;
 using UnityEngine.UI;

 public class TestImageFrameAnimation : MonoBehaviour {

     public Image image;
     private ImageFrameAnimation ani;

     void Start ()
     {
         ani = image.gameObject.AddComponent<ImageFrameAnimation>();
         Sprite[] sprites = Resources.LoadAll<Sprite>("Num");
         ani.Init(sprites, true, true, true, );
     }

     private void Update()
     {
         if (Input.GetKeyDown(KeyCode.Q))
         {
             ani.Pause();
         }

         if (Input.GetKeyDown(KeyCode.W))
         {
             ani.PlayReverse();
         }
     }
 }

效果：