花生_TL007

这个屌丝很懒，什么也没留下！

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AssetsBuddle_loadasset("assetbundlemanifes

作者：花生_TL007 | 2024-02-14 22:38:29

踩

loadasset("assetbundlemanifest") 为空

部分内容引自SIKI学院

CreateAssetBundles：

[ MenuItem ( "AssetBundles/Build AssetBundles" )]

static void BuildAllAssetBundles ()

{

string dir = "AssetBundles" ;

if ( Directory . Exists (dir)== false )

{

Directory . CreateDirectory (dir);

}

BuildPipeline . BuildAssetBundles (dir, BuildAssetBundleOptions . UncompressedAssetBundle , BuildTarget . StandaloneWindows64 );

}

或者：

[MenuItem("TobyStarkTools/AssetBundle/PackingAB")]

static void BuildAssetBundle()

{

//打包到Asset目录外面

string path = Application.dataPath + "/../www/AssetBundls";

if (!System.IO.Directory.Exists(path))

{

System.IO.Directory.CreateDirectory(path);

}

if (BuildPipeline.BuildAssetBundles(path,

BuildAssetBundleOptions.None,

BuildTarget.StandaloneWindows64))

{

Debug.Log("打包成功");

}

清理：

[ MenuItem ( "AssetBundles/clear AssetBundles" )]

static void Clear (){

string dir = "AssetBundles" ;

if ( Directory . Exists (dir)== true )

{

string path = Application . dataPath + "/../" + dir+ "/" ;

Directory . Delete (path, true );

}

或者：

[MenuItem("aaa/b")]

static void de(){

string path = Application.dataPath + "/../www/AssetBundls";

System.IO.Directory.Delete (path,true);

Debug.Log ("清除成功");

}

LoadAssets:

加载一种资源

string path = "AssetBundles/cubewall.ab" ;

AssetBundle ab = AssetBundle.LoadFromFile(path);

GameObject wallPrefab = ab.LoadAsset<GameObject>("CubeWall");

Instantiate(wallPrefab);

yield return null ;

加载所有资源

AssetBundle ab2 = AssetBundle.LoadFromFile("AssetBundles/cubewall.ab");

Object[] objs= ab2.LoadAllAssets();

foreach(Object o in objs)

{

Instantiate(o);

}

第一种加载AB的方式 LoadFromMemoryAsync

AssetBundleCreateRequest request = AssetBundle.LoadFromMemoryAsync(File.ReadAllBytes(path));

yield return request;

AssetBundle ab = request.assetBundle;

GameObject wallPrefab = ab.LoadAsset<GameObject>( "CubeWall" );

Instantiate(wallPrefab);

第二种加载AB的方式 LoadFromFile

AssetBundleCreateRequest request = AssetBundle.LoadFromFileAsync(path);

yield return request;

AssetBundle ab = request.assetBundle;

GameObject wallPrefab = ab.LoadAsset<GameObject>( "CubeWall" );

Instantiate(wallPrefab);

第三种加载AB的方式 WWW

如果是本地服务器：

while (Caching.ready == false )

{

yield return null ;

}

WWW www =

WWW.LoadFromCacheOrDownload( @"file://F:\CodeFiles\unity\Framwork\AB\AssetBundleProject\AssetBundles\cubewall.ab" , 2 );

WWW www = WWW.LoadFromCacheOrDownload( @"http://localhost/AssetBundles/cubewall.ab" , 2 );

yield return www;

if ( string .IsNullOrEmpty(www.error)== false )

{

Debug.Log(www.error); yield break ;

}

AssetBundle ab = www.assetBundle;

GameObject wallPrefab = ab.LoadAsset<GameObject>( "CubeWall" );

Instantiate(wallPrefab);

第四种方式使用UnityWebRequest

//string uri = @"file://F:\CodeFiles\unity\Framwork\AB\AssetBundleProject\AssetBundles\cubewall.ab";

string uri = @"http://localhost/AssetBundles/cubewall.ab" ;

UnityWebRequest request = UnityWebRequest.GetAssetBundle(uri);

yield return request.Send();

//AssetBundle ab = DownloadHandlerAssetBundle.GetContent(request);

AssetBundle ab = (request.downloadHandler as DownloadHandlerAssetBundle).assetBundle;

GameObject wallPrefab = ab.LoadAsset<GameObject>( "CubeWall" );

Instantiate(wallPrefab);

//加载依赖文件

AssetBundle manifestAB = AssetBundle . LoadFromFile ( "AssetBundles/AssetBundles" );

AssetBundle ab = AssetBundle . LoadFromFile ( "AssetBundles/cubewall.ab" );

AssetBundleManifest manifest = manifestAB. LoadAsset < AssetBundleManifest >( "AssetBundleManifest" );

string [] strs = manifest. GetAllDependencies ( "cubewall.ab" );

foreach ( string name in strs)

{

print (name);

AssetBundle . LoadFromFile ( "AssetBundles/" + name);

}

GameObject wallPrefab = ab. LoadAsset < GameObject >( "CubeWall" );

Instantiate (wallPrefab);

或者：

//从AB中加载资源,需要实例化预设显然不能只加载Prefab,因为他依赖了模型和材质,需要去解决他们的依赖关系

private string m_ABPath = "";

//依赖文件

private AssetBundleManifest m_Manifest;

void Start ()

{

m_ABPath = Application.dataPath + "/../www/AssetBundls/";

AssetBundle mainfestBundle = null;

//1.先加载依赖文件

m_Manifest = LoadAsset<AssetBundleManifest>("AssetBundls","AssetBundleManifest",out mainfestBundle);

string abName = "Download/Prefab/EnvPrefabs/a.assetbundle";

//2.再加载依赖项获取哪一个ab包的依赖项

string[] arrDps = m_Manifest.GetAllDependencies(abName);

AssetBundle[] arrDpsBundle = new AssetBundle[arrDps.Length];

for (int i = 0; i < arrDps.Length; i++)

{

AssetBundle dpsBundle = null;

//注意依赖项的路径

LoadAsset<Object>(arrDps[i], arrDps[i],out dpsBundle);

arrDpsBundle[i] = dpsBundle;

Debug.Log("2加载依赖项->"+arrDps[i]);

}

//3.最后加载预设体并clone

AssetBundle jianzuBundle = null;

GameObject objPrefab = LoadAsset<GameObject>(abName, "a",out jianzuBundle);

Instantiate(objPrefab);

//-----------------------卸载资源镜像

//卸载预设AB镜像

jianzuBundle.Unload(true);

//卸载依赖项的AB镜像

for (int i = 0; i < arrDpsBundle.Length; i++)

{

arrDpsBundle[i].Unload(false);

}

//卸载依赖文件AB镜像

mainfestBundle.Unload(true);

}

public T LoadAsset<T>(string abName,string SourceName)where T:Object

{

AssetBundle ab= AssetBundle.LoadFromFile(string.Format("{0}/{1}", m_ABPath, abName));

return ab.LoadAsset<T>(SourceName);

}

//方便卸载AB的镜像,所以需要调用者再次获取到这个AB

public T LoadAsset<T>(string abName,string SourceName,out AssetBundle ab)where T:Object

{

ab= AssetBundle.LoadFromFile(string.Format("{0}/{1}", m_ABPath, abName));

return ab.LoadAsset<T>(SourceName);

}

文件校验：

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