Unity3D中播放序列帧动画

class FrameAnimation
{
private float fps = 10.0f;
private Rect drawPos;

private float time = 0;
private int currentIndex = 0;

public void DrawFrameAnimation(Texture[] frameTex)
{
int length = frameTex.Length;
GUI.DrawTexture(drawPos, frameTex[currentIndex]);

time += Time.deltaTime;

if(time >= 1.0f/fps)
{
currentIndex++;
time = 0;
if(currentIndex>= length-1)
{
currentIndex = length - 1;
}
}
}

public FrameAnimation(Rect drawPos,float fps)
{
this.drawPos = drawPos;
this.fps = fps;
}

}

在unity3D中新建一个脚本直接调用该类。

using UnityEngine;
using System.Collections;

public class DrawAnimation : MonoBehaviour {

//private Resources resource;
private Rect drawPos = new Rect(200,0,500,200);
private Object[] texObject;
public bool isCanDraw = false;

private string path;

Texture[] frameTex;
private FrameAnimation frameAni;

// Use this for initialization
void Start () {
LoadTexture(texObject,"FrameTex");
frameAni = new FrameAnimation( drawPos, 10);
}

void OnGUI()
{
if(GUILayout.Button("@#@"))
{
isCanDraw = true;
}
if(isCanDraw)
{
frameAni.DrawFrameAnimation(frameTex);
}
}

void LoadTexture(Object[] texObj, string path)
{
texObj = Resources.LoadAll(path);
frameTex = new Texture[texObj.Length];
texObj.CopyTo(frameTex, 0);
}

}

其实完全没有必要写成类，但是为了方便修改和最近在练习写代码的习惯，希望逐渐面向对象编程，希望可以提高代码的灵活性和复用性，所以就当是练习了！

2013/9/26:

发现把所有图片一次性全部导入，加载相当的消耗资源，在PC上都会卡上一下，何况在移动平台上，特别有的时候图片稍微多的时候。

所以把代码稍作修改：

int currentIndex = 0;
Texture frameAniTex;
// Use this for initialization
void Start ()
{

}

// Update is called once per frame
void FrameAnimation()
{
//isAnimating = true;
frameAniTex = resources.GetTexture("BootAnim/" + currentIndex.ToString("D4"));

GUI.DrawTexture(frameAnimPos,frameAniTex);
if (currentIndex < length - 1)
{
time += Time.deltaTime;
if (time >= 1.0f / fps)
{
currentIndex++;
time = 0;
if (currentIndex == length - 1)
{
Resources.UnloadUnusedAssets();     ///加载完成后，即播放完毕后，卸载掉这些资源，好像跟播放序列帧动画扯远了，这是加载资源管理才对、、、、、
}
}
}
}

这样做的好处是一张一张的加载资源，不像上面的那样一次性加载完，但是图片的数量即length的数量需要自己手动传入，因为无法根据代码动态获取。