unity序列帧的实现。包括三种效果，后续再补充_unity 序列帧换装

效果1：从头播放到尾
效果2：重复播放
效果3：正放、倒放交替播放

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class XuLieZhen : MonoBehaviour
{
    [Header("序列帧路径")]
    public string Path;
    [Header("更换间隔")]
    public float time = 0.01f;
    float delTime;
    [Header("是否循环播放")]
    bool IsLoop;
    [Header("从第几张开始循环")]
    public int LoopIndex;
    [Header("来回效果，勾选isloop无效")]
    bool IsPingPang;
    int index = 0;
    List<Sprite> sprites = new List<Sprite>();
    bool IsPlay;
    bool iscanPingPang;//记录初始状态
    public enum LoopModle
    {
        NoLoop, CommonLoop, PingPang
    }
    public LoopModle loopPattern = new LoopModle();
    /// <summary>
    /// 开始读取
    /// </summary>
    private void Awake()
    {
        delTime = time;
        Resources.UnloadUnusedAssets();
        for (int i = 0; i < Resources.LoadAll<Sprite>(Path).Length; i++)
        {
            sprites.Add(Resources.LoadAll<Sprite>(Path)[i]);
        }
        iscanPingPang = IsPingPang;
    }
    /// <summary>
    /// 开始时 初始化状态
    /// </summary>
    private void OnEnable()
    {
        IsPingPang = iscanPingPang;
        //if (!IsPingPang) IsPlay = true;
        //if (IsPingPang) StartCoroutine("PingPang");
        switch (loopPattern)
        {
            case LoopModle.NoLoop:
                IsPlay = true;
                IsLoop = false;
                break;
            case LoopModle.CommonLoop:
                IsPlay = true;
                IsLoop = true;
                break;
            case LoopModle.PingPang:
                IsPingPang = true;
                StartCoroutine("PingPang");
                break;
        }
    }
    /// <summary>
    /// 结束时 初始化状态
    /// </summary>
    private void OnDisable()
    {
        index = 0;
        transform.GetComponent<Image>().sprite = sprites[0];
    }
    void Update()
    {
        if (IsPlay) ChangePictures(IsLoop);
    }
    /// <summary>
    /// 播放序列帧
    /// </summary>
    /// <param name="isLoop">是否循环播放</param>
    void ChangePictures(bool isLoop)
    {
        time -= Time.deltaTime;
        if (time < 0)
        {
            transform.GetComponent<Image>().sprite = sprites[index];
            time = delTime;
            index++;
            if (index >= sprites.Count)
            {
                if (isLoop)
                {
                    index = LoopIndex;
                }
                else
                {
                    index = sprites.Count - 1;
                    IsPlay = false;
                }
            }
        }
    }
    /// <summary>
    /// pingpang效果
    /// </summary>
    /// <returns></returns>
    IEnumerator PingPang()
    {
        transform.GetComponent<Image>().sprite = sprites[index];
        yield return new WaitForSeconds(delTime);
        if (IsPingPang)
        {
            index++;
            if (index > sprites.Count - 1)
            {
                index = sprites.Count - 1;
                IsPingPang = false;
            }
        }
        else
        {
            index--;
            if (index < LoopIndex)
            {
                index = LoopIndex;
                IsPingPang = true;
            }
        }
        StopCoroutine("PingPang");
        StartCoroutine("PingPang");
    }
}
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代码很简单，怎么使用直接看代码就能明白。关键是要填好面板上的信息。