/// <summary>
/// 删除未使用的AB，可能是上次打包出来的，而这一次没生成的
/// </summary>
/// <param name="all"></param>
protected void RemoveUnused(List <AssetTarget> all)
{
HashSet <string> usedSet = new HashSet <string>();
for (int i = 0; i < all.Count; i++)
{
AssetTarget target = all[i];
if (target.needSelfExport)
{
usedSet.Add(target.bundleName);
}
}
DirectoryInfo di = new DirectoryInfo(AssetBundleBuildPath.BundleSavePath);
FileInfo[] abFiles = di.GetFiles("*.ab");
for (int i = 0; i < abFiles.Length; i++)
{
FileInfo fi = abFiles[i];
if (usedSet.Add(fi.Name))
{
Debug.Log("Remove unused AB : " + fi.Name);
fi.Delete();
//for U5X
File.Delete(fi.FullName + ".manifest");
}
}
}
public virtual void Save(Stream stream, AssetTarget[] targets)
{
StreamWriter sw = new StreamWriter(stream);
//写入文件头判断文件类型用，ABDT 意思即 Asset-Bundle-Data-Text
sw.WriteLine("ABDT");
for (int i = 0; i < targets.Length; i++)
{
AssetTarget target = targets[i];
HashSet <AssetTarget> deps = new HashSet <AssetTarget>();
target.GetDependencies(deps);
//debug name
sw.WriteLine(target.assetPath);
//bundle name
sw.WriteLine(target.bundleName);
//File Name
sw.WriteLine(target.bundleShortName);
//hash
sw.WriteLine(target.bundleCrc);
//type
sw.WriteLine((int)target.compositeType);
//写入依赖信息
sw.WriteLine(deps.Count);
foreach (AssetTarget item in deps)
{
sw.WriteLine(item.bundleName);
}
sw.WriteLine("<------------->");
}
sw.Close();
}
public override void Save(Stream stream, AssetTarget[] targets)
{
BinaryWriter sw = new BinaryWriter(stream);
//写入文件头判断文件类型用，ABDB 意思即 Asset-Bundle-Data-Binary
sw.Write(new char[] { 'A', 'B', 'D', 'B' });
List <string> bundleNames = new List <string>();
for (int i = 0; i < targets.Length; i++)
{
AssetTarget target = targets[i];
bundleNames.Add(target.bundleName);
}
//写入文件名池
sw.Write(bundleNames.Count);
for (int i = 0; i < bundleNames.Count; i++)
{
sw.Write(bundleNames[i]);
}
//写入详细信息
for (int i = 0; i < targets.Length; i++)
{
AssetTarget target = targets[i];
HashSet <AssetTarget> deps = new HashSet <AssetTarget>();
target.GetDependencies(deps);
//debug name
sw.Write(target.assetPath);
//bundle name
sw.Write(bundleNames.IndexOf(target.bundleName));
//File Name
sw.Write(target.bundleShortName);
//hash
sw.Write(target.bundleCrc);
//type
sw.Write((int)target.compositeType);
//写入依赖信息
sw.Write(deps.Count);
foreach (AssetTarget item in deps)
{
sw.Write(bundleNames.IndexOf(item.bundleName));
}
}
sw.Close();
}
public static AssetTarget Load(FileInfo file, System.Type t)
{
AssetTarget target = null;
string fullPath = file.FullName;
int index = fullPath.IndexOf("Assets");
if (index != -1)
{
string assetPath = fullPath.Substring(index);
if (_assetPath2target.ContainsKey(assetPath))
{
target = _assetPath2target[assetPath];
}
else
{
Object o = null;
if (t == null)
{
o = AssetDatabase.LoadMainAssetAtPath(assetPath);
}
else
{
o = AssetDatabase.LoadAssetAtPath(assetPath, t);
}
if (o != null)
{
int instanceId = o.GetInstanceID();
if (_object2target.ContainsKey(instanceId))
{
target = _object2target[instanceId];
}
else
{
target = new AssetTarget(o, file, assetPath);
string key = string.Format("{0}/{1}", assetPath, instanceId);
_assetPath2target[key] = target;
_object2target[instanceId] = target;
}
}
}
}
return(target);
}
public static AssetTarget Load(Object o)
{
AssetTarget target = null;
if (o != null)
{
int instanceId = o.GetInstanceID();
if (_object2target.ContainsKey(instanceId))
{
target = _object2target[instanceId];
}
else
{
string assetPath = AssetDatabase.GetAssetPath(o);
string key = assetPath;
//Builtin，内置素材，path为空
if (string.IsNullOrEmpty(assetPath))
{
key = string.Format("Builtin______{0}", o.name);
}
else
{
key = string.Format("{0}/{1}", assetPath, instanceId);
}
if (_assetPath2target.ContainsKey(key))
{
target = _assetPath2target[key];
}
else
{
if (assetPath.StartsWith("Resources"))
{
assetPath = string.Format("{0}/{1}.{2}", assetPath, o.name, o.GetType().Name);
}
FileInfo file = new FileInfo(Path.Combine(ProjectPath, assetPath));
target = new AssetTarget(o, file, assetPath);
_object2target[instanceId] = target;
_assetPath2target[key] = target;
}
}
}
return(target);
}
public override void Export()
{
base.Export();
List <AssetBundleBuild> list = new List <AssetBundleBuild>();
//标记所有 asset bundle name
var all = AssetBundleUtils.GetAll();
for (int i = 0; i < all.Count; i++)
{
AssetTarget target = all[i];
if (target.needSelfExport)
{
AssetBundleBuild build = new AssetBundleBuild();
build.assetBundleName = target.bundleName;
build.assetNames = new string[] { target.assetPath };
list.Add(build);
}
}
//开始打包
BuildPipeline.BuildAssetBundles(AssetBundleBuildPath.BundleSavePath, list.ToArray(), BuildAssetBundleOptions.ChunkBasedCompression, EditorUserBuildSettings.activeBuildTarget);
#if UNITY_5_1 || UNITY_5_2
AssetBundle ab = AssetBundle.CreateFromFile(pathResolver.BundleSavePath + "/AssetBundles");
#else
AssetBundle ab = AssetBundle.LoadFromFile(AssetBundleBuildPath.BundleSavePath + "/AssetBundles");
#endif
AssetBundleManifest manifest = ab.LoadAsset("AssetBundleManifest") as AssetBundleManifest;
//hash
for (int i = 0; i < all.Count; i++)
{
AssetTarget target = all[i];
if (target.needSelfExport)
{
Hash128 hash = manifest.GetAssetBundleHash(target.bundleName);
target.bundleCrc = hash.ToString();
}
}
this.SaveDepAll(all);
ab.Unload(true);
this.RemoveUnused(all);
AssetDatabase.RemoveUnusedAssetBundleNames();
AssetDatabase.Refresh();
}
public void AddRootTargets(DirectoryInfo bundleDir, string[] partterns = null, SearchOption searchOption = SearchOption.AllDirectories)
{
if (partterns == null)
{
partterns = new string[] { "*.*" }
}
;
for (int i = 0; i < partterns.Length; i++)
{
FileInfo[] prefabs = bundleDir.GetFiles(partterns[i], searchOption);
foreach (FileInfo file in prefabs)
{
if (file.Extension.Contains("meta"))
{
continue;
}
AssetTarget target = AssetBundleUtils.Load(file);
target.exportType = AssetBundleExportType.Root;
}
}
}
protected void SaveDepAll(List <AssetTarget> all)
{
string path = Path.Combine(AssetBundleBuildPath.BundleSavePath, AssetBundlePathResolver.Instance.DependFileName);
if (File.Exists(path))
{
File.Delete(path);
}
List <AssetTarget> exportList = new List <AssetTarget>();
for (int i = 0; i < all.Count; i++)
{
AssetTarget target = all[i];
if (target.needSelfExport)
{
exportList.Add(target);
}
}
AssetBundleDataWriter writer = dataWriter;
writer.Save(path, exportList.ToArray());
}