/// <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>
private void RemoveUnused()
{
var all = context.allTarget;
HashSet <string> usedSet = new HashSet <string>();
for (int i = 0; i < all.Count; i++)
{
ABTarget target = all[i];
if (target.needSelfExport)
{
usedSet.Add(target.bundleName);
}
}
DirectoryInfo di = new DirectoryInfo(ABExportConst.PlatformBundleSavePath);;
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();
File.Delete(fi.FullName + ".manifest");
}
}
}
public override void Save(Stream stream, ABTarget[] 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++)
{
ABTarget target = targets[i];
HashSet <ABTarget> deps = target.GetAllDependencies();
sw.WriteLine(target.assetPath); // debug name
sw.WriteLine(target.bundleName); // bundle name
sw.WriteLine(target.fileHash); // file hash
sw.WriteLine((int)target.compositeType); // export type
sw.WriteLine(deps.Count);
foreach (ABTarget item in deps)
{
sw.WriteLine(item.bundleName);
}
sw.WriteLine("<------------->");
}
sw.Close();
}
/// <summary>
/// 添加本对象的依赖
/// </summary>
/// <param name="target"></param>
private void AddDepend(ABTarget target)
{
if (target == this || this.ContainsDepend(target))
{
return;
}
if (target.ContainsDepend(this))
{
Debug.LogError("出现循环依赖：" + target.bundleName + " 与 " + bundleName);
return;
}
dependencies.Add(target);
target.reverseDependencies.Add(this);
//遍历依赖树依赖我的对象不需要再依赖该目标
IEnumerable <ABTarget> cols = dependencies;
cols = new ABTarget[] { target };
foreach (var at in cols)
{
var e = reverseDependencies.GetEnumerator();
while (e.MoveNext())
{
ABTarget dc = e.Current;
if (dc == null)
{
continue;
}
dc.RemoveDepend(at);
}
e.Dispose();
}
}
/// <summary>
/// 添加根目标
/// </summary>
/// <param name="fliter"></param>
private void AddRootTarget(ABFliter fliter)
{
var files = fliter.GetFiles();
files.ForEach((file) =>
{
var target = ABTarget.GetOrCreateTarget(context, file);
if (target == null)
{
Debug.LogError(file);
return;
}
target.exportType = ABExportType.Root;
});
}
private void GetDependecies(HashSet <ABTarget> targets)
{
var ie = dependencies.GetEnumerator();
while (ie.MoveNext())
{
ABTarget target = ie.Current;
if (target.needSelfExport)
{
targets.Add(target);
}
else
{
target.GetDependecies(targets);
}
}
}
/// <summary>
/// 是否已经依赖（遍历依赖树）
/// </summary>
/// <param name="target"></param>
/// <returns></returns>
private bool ContainsDepend(ABTarget target)
{
if (dependencies.Contains(target))
{
return(true);
}
var e = dependencies.GetEnumerator();
while (e.MoveNext())
{
if (e.Current.ContainsDepend(target))
{
return(true);
}
}
return(false);
}
/// <summary>
/// 从上下文中获取或创建Target
/// </summary>
/// <param name="context"></param>
/// <param name="file"></param>
/// <param name="t"></param>
/// <returns></returns>
public static ABTarget GetOrCreateTarget(ABExportContext context, FileInfo file, System.Type t = null)
{
ABTarget target = null;
string fullPath = file.FullName;
int index = fullPath.IndexOf("Assets");
if (index < 0)
{
return(null);
}
//通过assetPath寻找
string assetPath = fullPath.Substring(index);
if (context.TryGetTarget(assetPath, out target))
{
return(target);
}
UnityEngine.Object obj = t != null?AssetDatabase.LoadAssetAtPath(assetPath, t) : AssetDatabase.LoadMainAssetAtPath(assetPath);
if (obj == null)
{
return(null);
}
//通过InstanceId寻找
int instID = obj.GetInstanceID();
if (context.TryGetTarget(instID, out target))
{
return(target);
}
//创建新的Target
target = new ABTarget(obj, file, assetPath);
target.context = context;
context.AddTarget(target);
return(target);
}
public override void Save(Stream stream, ABTarget[] 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++)
{
ABTarget 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++)
{
ABTarget target = targets[i];
HashSet <ABTarget> deps = target.GetAllDependencies();
sw.Write(target.assetPath); //debug name
sw.Write(bundleNames.IndexOf(target.bundleName)); //bundle name
sw.Write(target.fileHash); //file hash
sw.Write((int)target.compositeType); //export type
sw.Write(deps.Count);
foreach (ABTarget item in deps)
{
sw.Write(bundleNames.IndexOf(item.bundleName));
}
}
sw.Close();
}
/// <summary>
/// 进行最后的导出操作
/// </summary>
/// <param name="exportDir"></param>
private void Export(string exportDir)
{
var allTarget = context.allTarget;
//标记所有 asset bundle name，如果需要单独打包则标出assetbundle名
for (int i = 0; i < allTarget.Count; i++)
{
ABTarget target = allTarget[i];
AssetImporter importer = AssetImporter.GetAtPath(target.assetPath);
if (!importer)
{
continue;
}
importer.assetBundleName = target.needSelfExport ? target.bundleName : null;
}
var bundleSavePath = ABExportConst.PlatformBundleSavePath + "/" + exportDir;
PathEx.MakeDirectoryExist(bundleSavePath);
AssetDatabase.Refresh();
//开始打包
BuildPipeline.BuildAssetBundles(bundleSavePath, BuildAssetBundleOptions.ChunkBasedCompression, EditorUserBuildSettings.activeBuildTarget);
//清除所有 asset bundle name
for (int i = 0; i < allTarget.Count; i++)
{
ABTarget target = allTarget[i];
if (!target.needSelfExport)
{
continue;
}
AssetImporter importer = AssetImporter.GetAtPath(target.assetPath);
if (!importer)
{
continue;
}
importer.assetBundleName = null;
}
}
/// <summary>
/// 保存依赖文件
/// </summary>
/// <param name="fliter"></param>
private void SaveDep(string exportDirectory)
{
var all = context.allTarget;
var path = PathEx.Combine(ABExportConst.PlatformBundleSavePath, exportDirectory,
ABPathResolver.DEPEND_FILE_NAME);
if (File.Exists(path))
{
File.Delete(path);
}
List <ABTarget> exportList = new List <ABTarget>();
for (int i = 0; i < all.Count; i++)
{
ABTarget target = all[i];
if (target.needSelfExport)
{
exportList.Add(target);
}
}
dataWriter.Save(path, exportList.ToArray());
}
/// <summary>
/// 分析关系依赖
/// </summary>
public void Analyze()
{
if (isAnalyzed)
{
return;
}
isAnalyzed = true;
//得到依赖
UnityEngine.Object[] deps = EditorUtility.CollectDependencies(new UnityEngine.Object[] { asset });
var depList = from dep in deps
let path = AssetDatabase.GetAssetPath(dep)
where !(dep is MonoScript || path.StartsWith("Resources"))
select AssetDatabase.GetAssetPath(dep);
string[] paths = depList.Distinct().ToArray();
paths.Foreach <string>((path) =>
{
if (!File.Exists(path))
{
return;
}
FileInfo fileInfo = new FileInfo(path);
ABTarget target = GetOrCreateTarget(context, fileInfo);
if (target == null)
{
return;
}
AddDepend(target);
target.Analyze();
});
}
/// <summary>
/// 尝试获取ABTarget
/// </summary>
/// <param name="assetPath"></param>
/// <param name="target"></param>
/// <returns></returns>
public bool TryGetTarget(string assetPath, out ABTarget target)
{
return(assetPath2target.TryGetValue(assetPath, out target));
}
/// <summary>
/// 尝试获取ABTarget
/// </summary>
/// <param name="instanceId"></param>
/// <param name="target"></param>
/// <returns></returns>
public bool TryGetTarget(int instanceId, out ABTarget target)
{
return(object2target.TryGetValue(instanceId, out target));
}
/// <summary>
/// 将Target从上下文中移除
/// </summary>
/// <param name="target"></param>
public static void RemoveTarget(ABTarget target)
{
target.context.RemoveTarget(target);
}
/// <summary>
/// 从依赖本对象的依赖列表中移除
/// </summary>
/// <param name="target"></param>
private void RemoveReverseDepend(ABTarget target)
{
target.RemoveDepend(this);
}
/// <summary>
/// 移除本对象的依赖项
/// </summary>
/// <param name="target"></param>
private void RemoveDepend(ABTarget target)
{
dependencies.Remove(target);
target.reverseDependencies.Remove(this);
}
/// <summary>
/// 添加Target
/// </summary>
/// <param name="target"></param>
public void AddTarget(ABTarget target)
{
assetPath2target[target.assetPath] = target;
object2target[target.asset.GetInstanceID()] = target;
}
/// <summary>
/// 移除Target
/// </summary>
/// <param name="target"></param>
public void RemoveTarget(ABTarget target)
{
assetPath2target.Remove(target.assetPath);
object2target.Remove(target.asset.GetInstanceID());
}
/// <summary>
/// 向依赖本对象的依赖列表中添加项
/// </summary>
/// <param name="target"></param>
private void AddReverseDepend(ABTarget target)
{
target.AddDepend(this);
}