Unity3D资源管理——Unity2017 Assetbundle依赖打包

http://gad.qq.com/article/detail/289272

一、运行环境

1.1编辑器版本

使用Unity2017.3.1f

1.2 dll

无

二、目的

预制体打包时会将一份资源进行多份打包，导致数据冗余，所以需要根据依赖，将被多处引用的资源独立达成一个包，建立依赖关心，优化冗余。

三、流程

1. 遍历所有资源文件，设置其包名为空

2. 遍历需要打包的文件夹下的所有文件，通过Unity资源接口获取所有依赖，统计对应的依赖数

3. 将在需要打包文件夹内的包名设置为文件名，将在需要打包文件夹外的依赖数大于2的文件设置包名为文件名

4. 调用Unity的打包接口，会将该工程下的所有被设置包名的资源进行AB打包。

四、代码实现

核心代码：

public class ABUtils

｛

    /// <summary>

    /// 资源放置的文件夹路径

    /// </summary>

    private static List<string> resDircectoryPaths = new List<string>()｛ "Assets/Resources" ｝;

    private static List<string> needDependenyPaths = new List<string>() ｛ "Assets/Resources/Materials" ｝;

    /// <summary>

    /// 初始化打包环境，将所有的文件的ab属性都置空

    /// </summary>

    static List<string> InitBuildEnvironment()

    ｛

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

        string[] files = AssetDatabase.GetAllAssetPaths();

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

        ｛

            for (int j = 0; j < resDircectoryPaths.Count; j++)

            ｛

                if (files[i].Contains(resDircectoryPaths[j]))

                ｛

                    AssetImporter importer = AssetImporter.GetAtPath(files[i]);

                    paths.Add(files[i]);

                    importer.assetBundleName = String.Empty;

                ｝

            ｝

        ｝

        return paths;

    ｝

    public static void BuildAllAbAboutDependency(string outPath)

    ｛

        ResourceSystem.FileUtils.PrecessDirectoryExist(outPath);

        List<string> resPaths=InitBuildEnvironment();

        string fileName;

        string relationPath;

        ResourcesData data;

        bool isNeedDependcy;

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

        ｛

            isNeedDependcy = false;

            fileName = PathUtils.GetFileNameWithoutExtension(resPaths[i]);

            if (ResourceSystemFacade.Inst.ResDict.ContainsKey(fileName))

            ｛

                data = ResourceSystemFacade.Inst.ResDict[fileName];

                relationPath = PathUtils.GetRelativePath("Assets", resPaths[i]);

                for (int j = 0; j < needDependenyPaths.Count; j++)

                ｛

                    if (relationPath.Contains(needDependenyPaths[j]))

                    ｛

                        isNeedDependcy = true;

                        if (data.DependeciedNum > 1)

                        ｛

                            AssetImporter importer = AssetImporter.GetAtPath(relationPath);

                            importer.assetBundleName = data.Name;

                            importer.assetBundleVariant = ResourceSystemFacade.FileExtension;

                        ｝

                    ｝

                ｝

                if (!isNeedDependcy)

                ｛

                    AssetImporter importer = AssetImporter.GetAtPath(relationPath);

                    importer.assetBundleName = data.Name;

                    importer.assetBundleVariant = ResourceSystemFacade.FileExtension;

                ｝

            ｝

            else

            ｛

                DebugUtils.DebugError("未包含文件" + fileName);

            ｝

        ｝

        DebugUtils.DebugRedInfo(outPath);

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

    ｝

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