Unity3D中播放序列幀動畫

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中新建一個腳本直接調用該類。

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);
    }

}

 其實完全沒有必要寫成類，但是為了方便修改和最近在練習寫代碼的習慣，希望逐漸面向對象編程，希望可以提高代碼的靈活性和復用性，所以就當是練習了！

2013/9/26:

發現把所有圖片一次性全部導入，加載相當的消耗資源，在PC上都會卡上一下，何況在移動平台上，特別有的時候圖片稍微多的時候。

所以把代碼稍作修改：

    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();     ///加載完成后，即播放完畢后，卸載掉這些資源，好像跟播放序列幀動畫扯遠了，這是加載資源管理才對、、、、、
                }
            }
        }
    }

這樣做的好處是一張一張的加載資源，不像上面的那樣一次性加載完，但是圖片的數量即length的數量需要自己手動傳入，因為無法根據代碼動態獲取。