update cache system

优化缓存系统的存储目录结构。

Assets/YooAsset/Runtime/CacheSystem/CacheSystem.cs

@@ -23,6 +23,15 @@ namespace YooAsset
 			_cachedDic.Clear();
 		}
 
+		/// <summary>
+		/// 获取缓存文件总数
+		/// </summary>
+		public static int GetCachedFilesCount(string packageName)
+		{
+			var cache = GetOrCreateCache(packageName);
+			return cache.GetCachedFilesCount();
+		}
+
 		/// <summary>
 		/// 查询是否为验证文件
 		/// </summary>

Assets/YooAsset/Runtime/CacheSystem/Operations/Internal/FindCacheFilesOperation.cs

@@ -101,17 +101,21 @@ namespace YooAsset
 				if (isFindItem == false)
 					break;
 
-				var fileFoder = _bundleFilesEnumerator.Current;
+				var rootFoder = _bundleFilesEnumerator.Current;
-				string cacheGUID = fileFoder.Name;
+				var childDirectories = rootFoder.GetDirectories();
+				foreach(var chidDirectory in childDirectories)
+				{
+					string cacheGUID = chidDirectory.Name;
 					if (CacheSystem.IsCached(_packageName, cacheGUID))
 						continue;
 
 					// 创建验证元素类
-				string fileRootPath = fileFoder.FullName;
+					string fileRootPath = chidDirectory.FullName;
 					string dataFilePath = $"{fileRootPath}/{ YooAssetSettings.CacheBundleDataFileName}";
 					string infoFilePath = $"{fileRootPath}/{ YooAssetSettings.CacheBundleInfoFileName}";
 					VerifyElement element = new VerifyElement(_packageName, cacheGUID, fileRootPath, dataFilePath, infoFilePath);
 					VerifyElements.Add(element);
+				}
 
 				if (OperationSystem.IsBusy)
 					break;
@@ -131,19 +135,21 @@ namespace YooAsset
 				if (isFindItem == false)
 					break;
 
-				var fileFoder = _rawFilesEnumerator.Current;
+				var rootFoder = _rawFilesEnumerator.Current;
-				string cacheGUID = fileFoder.Name;
+				var childDirectories = rootFoder.GetDirectories();
+				foreach (var chidDirectory in childDirectories)
+				{
+					string cacheGUID = chidDirectory.Name;
 					if (CacheSystem.IsCached(_packageName, cacheGUID))
 						continue;
 
 					// 获取数据文件的后缀名
 					string dataFileExtension = string.Empty;
-				var fileInfos = fileFoder.GetFiles();
+					var fileInfos = chidDirectory.GetFiles();
 					foreach (var fileInfo in fileInfos)
 					{
 						if (fileInfo.Extension == ".temp")
 							continue;
-
 						if (fileInfo.Name.StartsWith(YooAssetSettings.CacheBundleDataFileName))
 						{
 							dataFileExtension = fileInfo.Extension;
@@ -152,11 +158,12 @@ namespace YooAsset
 					}
 
 					// 创建验证元素类
-				string fileRootPath = fileFoder.FullName;
+					string fileRootPath = chidDirectory.FullName;
 					string dataFilePath = $"{fileRootPath}/{ YooAssetSettings.CacheBundleDataFileName}{dataFileExtension}";
 					string infoFilePath = $"{fileRootPath}/{ YooAssetSettings.CacheBundleInfoFileName}";
 					VerifyElement element = new VerifyElement(_packageName, cacheGUID, fileRootPath, dataFilePath, infoFilePath);
 					VerifyElements.Add(element);
+				}
 
 				if (OperationSystem.IsBusy)
 					break;

Assets/YooAsset/Runtime/CacheSystem/Operations/PackageCachingOperation.cs

@@ -63,6 +63,9 @@ namespace YooAsset
 				// 注意：总是返回成功
 				_steps = ESteps.Done;
 				Status = EOperationStatus.Succeed;
+
+				int totalCount = CacheSystem.GetCachedFilesCount(_packageName);
+				YooLogger.Log($"Package '{_packageName}' cached files count : {totalCount}");
 			}
 		}
 	}

Assets/YooAsset/Runtime/CacheSystem/PackageCache.cs

@@ -44,6 +44,14 @@ namespace YooAsset
 			_wrappers.Clear();
 		}
 
+		/// <summary>
+		/// 获取缓存文件总数
+		/// </summary>
+		public int GetCachedFilesCount()
+		{
+			return _wrappers.Count;
+		}
+
 		/// <summary>
 		/// 查询缓存记录
 		/// </summary>

Assets/YooAsset/Runtime/PatchSystem/PatchBundle.cs

@@ -71,15 +71,16 @@ namespace YooAsset
 				if (string.IsNullOrEmpty(_cachedDataFilePath) == false)
 					return _cachedDataFilePath;
 
+				string folderName = FileHash.Substring(0, 2);
 				if (IsRawFile)
 				{
 					string cacheRoot = PersistentHelper.GetCachedRawFileFolderPath(PackageName);
-					_cachedDataFilePath = $"{cacheRoot}/{CacheGUID}/{YooAssetSettings.CacheBundleDataFileName}{_fileExtension}";
+					_cachedDataFilePath = $"{cacheRoot}/{folderName}/{CacheGUID}/{YooAssetSettings.CacheBundleDataFileName}{_fileExtension}";
 				}
 				else
 				{
 					string cacheRoot = PersistentHelper.GetCachedBundleFileFolderPath(PackageName);
-					_cachedDataFilePath = $"{cacheRoot}/{CacheGUID}/{YooAssetSettings.CacheBundleDataFileName}";
+					_cachedDataFilePath = $"{cacheRoot}/{folderName}/{CacheGUID}/{YooAssetSettings.CacheBundleDataFileName}";
 				}
 				return _cachedDataFilePath;
 			}
@@ -96,15 +97,16 @@ namespace YooAsset
 				if (string.IsNullOrEmpty(_cachedInfoFilePath) == false)
 					return _cachedInfoFilePath;
 
+				string folderName = FileHash.Substring(0, 2);
 				if (IsRawFile)
 				{
 					string cacheRoot = PersistentHelper.GetCachedRawFileFolderPath(PackageName);
-					_cachedInfoFilePath = $"{cacheRoot}/{CacheGUID}/{YooAssetSettings.CacheBundleInfoFileName}";
+					_cachedInfoFilePath = $"{cacheRoot}/{folderName}/{CacheGUID}/{YooAssetSettings.CacheBundleInfoFileName}";
 				}
 				else
 				{
 					string cacheRoot = PersistentHelper.GetCachedBundleFileFolderPath(PackageName);
-					_cachedInfoFilePath = $"{cacheRoot}/{CacheGUID}/{YooAssetSettings.CacheBundleInfoFileName}";
+					_cachedInfoFilePath = $"{cacheRoot}/{folderName}/{CacheGUID}/{YooAssetSettings.CacheBundleInfoFileName}";
 				}
 				return _cachedInfoFilePath;
 			}