Unity3D 将一张贴图转变成2D动画的公用脚本

using UnityEngine;
using System.Collections;

public class AnimationController : MonoBehaviour
{

    float myTime = 0;
    bool isPlay = false;
    /// <summary>
    /// 2D动画播放
    /// </summary>
    /// <param name="colSize">列数</param>
    /// <param name="rowSize">行数</param>
    /// <param name="colFrameStart">从第几列开始</param>
    /// <param name="rowFrameStart">从第几行开始</param>
    /// <param name="totalFrames">图片总共的帧数</param>
    /// <param name="framesPreSecond">一秒钟播放的帧数</param>
    /// <param name="totalTime">动画播放的时间  为0就一直播放</param>
     /// <returns></returns>
     public  bool AnimationSprite(int colSize, int rowSize, int colFrameStart, int rowFrameStart, int totalFrames, int framesPreSecond, int totalTime)
    {
        myTime += Time.deltaTime;
        if (totalTime != 0 && myTime > totalTime)
        {
            isPlay = false;
            myTime = 0;
            return isPlay;
        }
        int index = (int)(Time.time * framesPreSecond%totalFrames);
        Vector2 size = new Vector2(1.0f / colSize, 1.0f / rowSize);
        float u = index % colSize;
        float v = index / colSize;
        Vector2 offset = new Vector2((u+colFrameStart)*size.x,(1.0f-size.y)-(v+rowFrameStart)*size.y);
        renderer.material.mainTextureScale = size;
        renderer.material.mainTextureOffset = offset;
        return true;
    }
}

将上述的脚本拖拽至一个物体，然后新建一个脚本，代码如下：

 private bool isPlay = true;//是否播放
    void Update()
    {
        if (isPlay)
        {
            isPlay=animationHelper.AnimationSprite(3, 6, 0, 0, 18, 12, 3);
        }
    }

就可以实现动画的播放