构建AB包

using System. Collections;

using System. Collections. Generic;

using UnityEngine;

using UnityEditor;

using System. IO;

using System. Security. Cryptography;

using System. Text;

/// < summary >

/// AssetBundle编辑

/// </ summary >

public class AssetBundleEditor

{

#region 自动做标记

//思路

//1.找到资源保存的文件夹

//2.遍历里面的每个场景文件夹

//3.遍历场景文件夹里的所有文件系统

//4.如果访问的是文件夹：再继续访问里面的所有文件系统，直到找到 文件 （递归）

//5.找到文件 就要修改他的 assetbundle labels

//6.用 AssetImporter 类 修改名称和后缀

//7.保存对应的 文件夹名 和 具体路径

[ MenuItem( "AssetBundle/Set AssetBundle Labels")]

public static void SetAssetBundleLabels()

{

//移除所有没有使用的标记

AssetDatabase. RemoveUnusedAssetBundleNames();

//1.找到资源保存的文件夹

string assetDirectory = Application. dataPath + "/Res";

//Debug.Log(assetDirectory);

DirectoryInfo directoryInfo = new DirectoryInfo( assetDirectory);

DirectoryInfo[] sceneDirectories = directoryInfo. GetDirectories();

//2.遍历里面的每个场景文件夹

foreach ( DirectoryInfo tmpDirectoryInfo in sceneDirectories)

{

string sceneDirectory = assetDirectory + "/" + tmpDirectoryInfo. Name;

DirectoryInfo sceneDirectoryInfo = new DirectoryInfo( sceneDirectory);

//错误检测

if ( sceneDirectoryInfo == null)

{

Debug. LogError( sceneDirectory + " 不存在!");

return;

}

else

{

Dictionary< string, string> namePahtDict = new Dictionary< string, string>();

//3.遍历场景文件夹里的所有文件系统

//sceneDirectory

//C:\Users\张晋枭\Documents\ABLesson\Assets\AssetBundles\Res\Scene1

//C:/Users/张晋枭/Documents/ABLesson/Assets/AssetBundles/Res/Scene1

int index = sceneDirectory. LastIndexOf( "/");

string sceneName = sceneDirectory. Substring( index + 1);

onSceneFileSystemInfo( sceneDirectoryInfo, sceneName, namePahtDict);

onWriteConfig( sceneName, namePahtDict);

}

}

AssetDatabase. Refresh();

Debug. Log( "设置成功");

}

/// < summary >

/// 记录配置文件

/// </ summary >

private static void onWriteConfig( string sceneName, Dictionary< string, string> namePathDict)

{

string path = PathUtil. GetAssetBundleOutPath() + "/" + sceneName + "Record.txt";

// Debug.Log(path);

using ( FileStream fs = new FileStream( path, FileMode. OpenOrCreate, FileAccess. Write))

{

//写二进制

using ( StreamWriter sw = new StreamWriter( fs))

{

sw. WriteLine( namePathDict. Count);

foreach ( KeyValuePair< string, string> kv in namePathDict)

sw. WriteLine( kv. Key + " " + kv. Value);

}

}

}

/// < summary >

/// 遍历场景文件夹里的所有文件系统

/// </ summary >

private static void onSceneFileSystemInfo( FileSystemInfo fileSystemInfo, string sceneName, Dictionary< string, string> namePahtDict)

{

if (! fileSystemInfo. Exists)

{

Debug. LogError( fileSystemInfo. FullName + " 不存在!");

return;

}

DirectoryInfo directoryInfo = fileSystemInfo as DirectoryInfo;

FileSystemInfo[] fileSystemInfos = directoryInfo. GetFileSystemInfos();

foreach ( var tmpFileSystemInfo in fileSystemInfos)

{

FileInfo fileInfo = tmpFileSystemInfo as FileInfo;

if ( fileInfo == null)

{

//代表强转失败，不是文件 就是文件夹

//如果访问的是文件夹：再继续访问里面的所有文件系统，直到找到 文件 （递归）

onSceneFileSystemInfo( tmpFileSystemInfo, sceneName, namePahtDict);

}

else

{

//就是文件

//5.找到文件 就要修改他的 assetbundle labels

setLabels( fileInfo, sceneName, namePahtDict);

}

}

}

/// < summary >

/// 修改资源文件的 assetbundle labels

/// </ summary >

private static void setLabels( FileInfo fileInfo, string sceneName, Dictionary< string, string> namePahtDict)

{

//对unity自身生成的meta文件 无视它

if ( fileInfo. Extension == ".meta")

return;

string bundleName = getBundleName( fileInfo, sceneName);

//C:\Users\张晋枭\Documents\ABLesson\Assets\Res\Scene1\Buildings\Folder\Building4.prefab

int index = fileInfo. FullName. IndexOf( "Assets");

//Assets\Res\Scene1\Buildings\Folder\Building4.prefab

string assetPath = fileInfo. FullName. Substring( index);

AssetImporter assetImporter = AssetImporter. GetAtPath( assetPath);

//用 AssetImporter 类 修改名称和后缀

assetImporter. assetBundleName = bundleName. ToLower();

if ( fileInfo. Extension == ".unity")

assetImporter. assetBundleVariant = "u3d";

else

assetImporter. assetBundleVariant = "assetbundle";

string folderName = "";

//添加到字典里

if ( bundleName. Contains( "/"))

folderName = bundleName. Split( '/')[ 1];

else

folderName = bundleName;

string bundlePath = assetImporter. assetBundleName + "." + assetImporter. assetBundleVariant;

if (! namePahtDict. ContainsKey( folderName))

namePahtDict. Add( folderName, bundlePath);

}

/// < summary >

/// 获取包名

/// </ summary >

private static string getBundleName( FileInfo fileInfo, string sceneName)

{

string windowsPath = fileInfo. FullName; //C:\Users\张晋枭\Documents\ABLesson\Assets\Res\Scene1\Buildings\Folder\Building4.prefab

//转换成unity可识别的路径

string unityPath = windowsPath. Replace( @"\", "/");

//C:/Users/张晋枭/Documents/ABLesson/Assets/Res/Scene1 /Buildings/Folder/Building4.prefab

//C: \Users\张晋枭\Documents\ABLesson\Assets\Res\Scene1\Scene1.unity

int index = unityPath. IndexOf( sceneName) + sceneName. Length;

string bundlePath = unityPath. Substring( index + 1);

if ( bundlePath. Contains( "/"))

{

//Buildings/Folder/Folder/Folder/Folder/Folder/Building4.prefab

string[] tmp = bundlePath. Split( '/');

return sceneName + "/" + tmp[ 0];

}

else

{

//Scene1.unity

return sceneName;

}

}

#endregion

#region 打包

[ MenuItem( "AssetBundle/Build AssetBundles")]

static void BuildAllAssetBundles()

{

string outPath = PathUtil. GetAssetBundleOutPath();

BuildPipeline. BuildAssetBundles( outPath, 0, BuildTarget. StandaloneWindows64);

}

#endregion

#region 一键删除

[ MenuItem( "AssetBundle/Delete All")]

static void DeleteAssetBundle()

{

string outPath = PathUtil. GetAssetBundleOutPath();

Directory. Delete( outPath, true);

File. Delete( outPath + ".meta");

AssetDatabase. Refresh();

}

#endregion

[ MenuItem( "Tools/Create Files")]

static void CreateFiles()

{

//C:/Users/Ahpily/Desktop/AB/Assets/StreamingAssets/Windows

string outPath = PathUtil. GetAssetBundleOutPath();

//校验文件的路径

string filePath = outPath + "/files.txt";

if ( File. Exists( filePath))

File. Delete( filePath);

//遍历这个文件夹下面的所有文件

List< string> fileList = new List< string>();

listFiles( new DirectoryInfo( outPath), ref fileList);

FileStream fs = new FileStream( filePath, FileMode. CreateNew);

StreamWriter sw = new StreamWriter( fs);

for ( int i = 0; i < fileList. Count; i++)

{

string file = fileList[ i];

string ext = Path. GetExtension( file);

if ( ext. EndsWith( ".meta"))

continue;

//生成这个文件对应的md5值

string md5 = getFileMd5( file);

//scene1.assetbundle

string value = file. Replace( outPath + "/", string. Empty);

//写入到文件

sw. WriteLine( value + "|" + md5);

}

sw. Close();

fs. Close();

AssetDatabase. Refresh();

}

/// < summary >

/// 遍历文件夹下的所有文件

/// </ summary >

/// < param name = "fileSystemInfo" > 文件夹的路径 </ param >

/// < param name = "fileList" ></ param >

static void listFiles( FileSystemInfo fileSystemInfo, ref List< string> fileList)

{

DirectoryInfo directoryInfo = fileSystemInfo as DirectoryInfo;

//获取所有的文件系统

FileSystemInfo[] infos = directoryInfo. GetFileSystemInfos();

foreach ( var info in infos)

{

FileInfo fileInfo = info as FileInfo;

//如果是文件 就成功了

if ( fileInfo != null)

{

fileList. Add( fileInfo. FullName. Replace( " \\ ", "/"));

}

//如果是文件夹就不成功 null

else

{

//递归

listFiles( info, ref fileList);

}

}

}

/// < summary >

/// 获取文件的md5值

/// </ summary >

/// < param name = "filePath" ></ param >

static string getFileMd5( string filePath)

{

FileStream fs = new FileStream( filePath, FileMode. Open);

MD5 md5 = new MD5CryptoServiceProvider();

byte[] result = md5. ComputeHash( fs);

fs. Close();

StringBuilder sb = new StringBuilder();

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

{

sb. Append( result[ i]. ToString( "x2"));

}

return sb. ToString();

}

}