加載AssetBundle方法

先介紹一種常用的加載AssetBundle方法

　　

using UnityEngine;
using System.Collections; 
using System.IO;  
public class LoadUnity3d : MonoBehaviour
{      // Use this for initialization     
    void Start()
    {
        StartCoroutine(LoadScene());
    }
    // Update is called once per frame     
    void Update()    
　　 {   
  
　　 }
    IEnumerator LoadScene()     {
        //文件路徑，也就是我們打包的那個         
        WWW www = new WWW("file:///" + Application.dataPath + "/Bundles/My Prefab.unity3d");
        yield return www;
        Instantiate(www.assetBundle.mainAsset);
    }
}

第二種，將www文件讀成字節進行同步加載

using UnityEngine;
using System.Collections;
 
public class ExampleClass : MonoBehaviour
{
    /// <summary>
    /// 返回字節數組
    /// </summary>
    /// <param name="binary"></param>
    /// <returns></returns>
    byte[] MyDecription(byte[] binary)
    {
        byte[] decrypted;   
        return decrypted;
    }
    IEnumerator Start()
    {
        WWW www = new WWW("http://myserver/myBundle.unity3d");  //帶有后綴的文件路徑，可以是網絡也可以是本地
        yield return www;
        byte[] decryptedBytes = MyDecription(www.bytes);    //返回字節數組
        AssetBundle assetBundle = AssetBundle.LoadFromMemory(decryptedBytes);   //從內存中同步加載資源資源包
        yield return assetBundle;
        if (assetBundle != null)            //如果資源包不為空
        {
            Instantiate(assetBundle.LoadAsset<GameObject>("myBundle");   //根據名字從資源包中加載對應資源            
        }
    }
}

第三種 異步

using UnityEngine;
using System.Collections;
 
public class ExampleClass : MonoBehaviour
{
    /// <summary>
    /// 返回字節數組
    /// </summary>
    /// <param name="binary"></param>
    /// <returns></returns>
    byte[] MyDecription(byte[] binary)
    {
        byte[] decrypted;   
        return decrypted;
    }
    IEnumerator Start()
    {
        WWW www = new WWW("http://myserver/myBundle.unity3d");  //帶有后綴的文件路徑，可以是網絡也可以是本地
        yield return www;
        byte[] decryptedBytes = MyDecription(www.bytes);    //返回字節數組
        AssetBundleCreateRequest bundle = AssetBundle.LoadFromMemoryAsync(decryptedBytes);//從內存中異步加載資源資源包
        yield return bundle;
        if (bundle != null && bundle.assetBundle != null)
        {
            Instantiate(bundle.assetBundle.LoadAsset<GameObject>("myBundle"));//根據名字從資源包中加載對應資源   
        }
    }
}

下面貼上項目中使用的方法 和異步加載很像，只是有些簡單的實現進行了封裝

  private IEnumerator LoadBundle(ModelGouJian _model)
    {
        string filePath = string.Format("{0}/_lesson/ModelFbx/{1}/{2}.unity3d", PublicJs.Datapath, _model.JieDianID, _model.ModelFbx);
        byte[] decryptedData = FileHelp.Instance.GetFileTextByteEsc(filePath);      //返回字節數組
        AssetBundleCreateRequest bundle = AssetBundle.LoadFromMemoryAsync(decryptedData);   //從內存中加載資源包
        yield return bundle;
        if (bundle != null && bundle.assetBundle != null)
        {
            _model.ModelObj = Instantiate(bundle.assetBundle.LoadAsset<GameObject>(_model.ModelFbx));  //根據資源名加載資源包中資源。
            _model.ModelObj.name = _model.ModelFbx;
            _model.ModelObj.transform.localPosition = new Vector3(0, 0, 0);
            if (_model.ModelObj.name != gouJianData.CurSelectGouJian.ModelFbx) { _model.ModelObj.SetActive(false); }
            bundle.assetBundle.Unload(false);
            bundle = null;
        }
        else
        {
            LogHelp.Write("模型下載錯誤：{0}", filePath);
        }
        yield return new WaitForSeconds(0.5f);
        iNum++;
        //判斷模型是否下載完成
        if (IsLoadModel == true && iNum == iCount)
        {
            IsLoadModel = false;
            this.LoadModelEnd();
        }
    }

對加載AssetBundle做一小結，以后補充。

 

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2016年12月22日