Update patch system

Assets/YooAsset/Runtime/PatchSystem/Operations/DownloaderOperation.cs

@@ -15,7 +15,7 @@ namespace YooAsset
 		private const int MAX_LOADER_COUNT = 64;
 
 		public delegate void OnDownloadOver(bool isSucceed);
-		public delegate void OnDownloadProgress(int totalDownloadCount, int currentDownloadCoun, long totalDownloadBytes, long currentDownloadBytes);
+		public delegate void OnDownloadProgress(int totalDownloadCount, int currentDownloadCount, long totalDownloadBytes, long currentDownloadBytes);
 		public delegate void OnDownloadFileFailed(string fileName);
 		
 		private readonly int _fileLoadingMaxNumber;

Assets/YooAsset/Runtime/PatchSystem/PlayMode/HostPlayModeImpl.cs

@@ -155,6 +155,47 @@ namespace YooAsset
 			return ConvertToDownloadList(downloadList);
 		}
 
+		/// <summary>
+		/// 创建解压器
+		/// </summary>
+		public DownloaderOperation CreateUnpackerByTags(string[] tags, int fileUpackingMaxNumber, int failedTryAgain)
+		{
+			List<AssetBundleInfo> unpcakList = GetUnpackListByTags(tags);
+			var operation = new DownloaderOperation(unpcakList, fileUpackingMaxNumber, failedTryAgain);
+			return operation;
+		}
+		private List<AssetBundleInfo> GetUnpackListByTags(string[] tags)
+		{
+			List<PatchBundle> downloadList = new List<PatchBundle>(1000);
+			foreach (var patchBundle in AppPatchManifest.BundleList)
+			{
+				// 如果已经在沙盒内
+				string filePath = PatchHelper.MakeSandboxCacheFilePath(patchBundle.Hash);
+				if (System.IO.File.Exists(filePath))
+					continue;
+
+				// 如果不是内置资源
+				if (patchBundle.IsBuildin == false)
+					continue;
+
+				// 如果是纯内置资源
+				if (patchBundle.IsPureBuildin())
+				{
+					downloadList.Add(patchBundle);
+				}
+				else
+				{
+					// 查询DLC资源
+					if (patchBundle.HasTag(tags))
+					{
+						downloadList.Add(patchBundle);
+					}
+				}
+			}
+
+			return ConvertToUnpackList(downloadList);
+		}
+
 		// WEB相关
 		internal string GetPatchDownloadMainURL(int resourceVersion, string fileName)
 		{
@@ -192,6 +233,25 @@ namespace YooAsset
 			return result;
 		}
 
+		// 解压相关
+		private AssetBundleInfo ConvertToUnpackInfo(PatchBundle patchBundle)
+		{
+			string sandboxPath = PatchHelper.MakeSandboxCacheFilePath(patchBundle.Hash);
+			string streamingLoadPath = AssetPathHelper.MakeStreamingLoadPath(patchBundle.Hash);
+			AssetBundleInfo bundleInfo = new AssetBundleInfo(patchBundle, sandboxPath, streamingLoadPath, streamingLoadPath);
+			return bundleInfo;
+		}
+		private List<AssetBundleInfo> ConvertToUnpackList(List<PatchBundle> unpackList)
+		{
+			List<AssetBundleInfo> result = new List<AssetBundleInfo>(unpackList.Count);
+			foreach (var patchBundle in unpackList)
+			{
+				var bundleInfo = ConvertToUnpackInfo(patchBundle);
+				result.Add(bundleInfo);
+			}
+			return result;
+		}
+
 		#region IBundleServices接口
 		AssetBundleInfo IBundleServices.GetAssetBundleInfo(string bundleName)
 		{

Assets/YooAsset/Runtime/YooAssets.cs

@@ -455,6 +455,51 @@ namespace YooAsset
 		}
 		#endregion
 
+		#region 资源解压接口
+		/// <summary>
+		/// 创建补丁解压器
+		/// </summary>
+		/// <param name="tag">资源标签</param>
+		/// <param name="unpackingMaxNumber">同时解压的最大文件数</param>
+		/// <param name="failedTryAgain">解压失败的重试次数</param>
+		public static DownloaderOperation CreatePatchUnpacker(string tag, int unpackingMaxNumber, int failedTryAgain)
+		{
+			return CreatePatchUnpacker(new string[] { tag }, unpackingMaxNumber, failedTryAgain);
+		}
+		
+		/// <summary>
+		/// 创建补丁解压器
+		/// </summary>
+		/// <param name="tags">资源标签列表</param>
+		/// <param name="unpackingMaxNumber">同时解压的最大文件数</param>
+		/// <param name="failedTryAgain">解压失败的重试次数</param>
+		public static DownloaderOperation CreatePatchUnpacker(string[] tags, int unpackingMaxNumber, int failedTryAgain)
+		{
+			if (_playMode == EPlayMode.EditorPlayMode)
+			{
+				List<AssetBundleInfo> downloadList = new List<AssetBundleInfo>();
+				var operation = new DownloaderOperation(downloadList, unpackingMaxNumber, failedTryAgain);
+				return operation;
+			}
+			else if (_playMode == EPlayMode.OfflinePlayMode)
+			{
+				List<AssetBundleInfo> downloadList = new List<AssetBundleInfo>();
+				var operation = new DownloaderOperation(downloadList, unpackingMaxNumber, failedTryAgain);
+				return operation;
+			}
+			else if (_playMode == EPlayMode.HostPlayMode)
+			{
+				if (_hostPlayModeImpl == null)
+					throw new Exception("YooAsset is not initialized.");
+				return _hostPlayModeImpl.CreateUnpackerByTags(tags, unpackingMaxNumber, failedTryAgain);
+			}
+			else
+			{
+				throw new NotImplementedException();
+			}
+		}
+		#endregion
+
 		#region 沙盒相关
 		/// <summary>
 		/// 清空沙盒目录