update cache system

新增方法ResoucePackage.ClearAllCacheFilesAsync()

Assets/YooAsset/Runtime/AssetSystem/Handles/SubAssetsOperationHandle.cs

@@ -112,8 +112,6 @@ namespace YooAsset
 				var retObject = assetObject as TObject;
 				if (retObject != null)
 					ret.Add(retObject);
-				else
-					YooLogger.Warning($"The type conversion failed : {assetObject.name}");
 			}
 			return ret.ToArray();
 		}

Assets/YooAsset/Runtime/CacheSystem/CacheSystem.cs

@@ -157,6 +157,14 @@ namespace YooAsset
 			return result;
 		}
 
+		/// <summary>
+		/// 获取所有的缓存文件
+		/// </summary>
+		public static List<string> GetAllCacheGUIDs(ResourcePackage package)
+		{
+			var cache = GetOrCreateCache(package.PackageName);
+			return cache.GetAllKeys();
+		}
 
 		private static EVerifyResult VerifyingInternal(string filePath, long fileSize, string fileCRC, EVerifyLevel verifyLevel)
 		{

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

@@ -0,0 +1,71 @@
+using System.Collections;
+using System.Collections.Generic;
+using System.IO;
+
+namespace YooAsset
+{
+	/// <summary>
+	/// 清理本地包裹所有的缓存文件
+	/// </summary>
+	public sealed class ClearAllCacheFilesOperation : AsyncOperationBase
+	{
+		private enum ESteps
+		{
+			None,
+			GetAllCacheFiles,
+			ClearAllCacheFiles,
+			Done,
+		}
+
+		private readonly ResourcePackage _package;
+		private List<string> _allCacheGUIDs;
+		private int _fileTotalCount = 0;
+		private ESteps _steps = ESteps.None;
+		
+		internal ClearAllCacheFilesOperation(ResourcePackage package)
+		{
+			_package = package;
+		}
+		internal override void Start()
+		{
+			_steps = ESteps.GetAllCacheFiles;
+		}
+		internal override void Update()
+		{
+			if (_steps == ESteps.None || _steps == ESteps.Done)
+				return;
+
+			if (_steps == ESteps.GetAllCacheFiles)
+			{
+				_allCacheGUIDs = CacheSystem.GetAllCacheGUIDs(_package);
+				_fileTotalCount = _allCacheGUIDs.Count;
+				YooLogger.Log($"Found all cache file count : {_fileTotalCount}");
+				_steps = ESteps.ClearAllCacheFiles;
+			}
+
+			if (_steps == ESteps.ClearAllCacheFiles)
+			{
+				for (int i = _allCacheGUIDs.Count - 1; i >= 0; i--)
+				{
+					string cacheGUID = _allCacheGUIDs[i];
+					CacheSystem.DiscardFile(_package.PackageName, cacheGUID);
+					_allCacheGUIDs.RemoveAt(i);
+
+					if (OperationSystem.IsBusy)
+						break;
+				}
+
+				if (_fileTotalCount == 0)
+					Progress = 1.0f;
+				else
+					Progress = 1.0f - (_allCacheGUIDs.Count / _fileTotalCount);
+
+				if (_allCacheGUIDs.Count == 0)
+				{
+					_steps = ESteps.Done;
+					Status = EOperationStatus.Succeed;
+				}
+			}
+		}
+	}
+}

Assets/YooAsset/Runtime/CacheSystem/Operations/ClearAllCacheFilesOperation.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 4eb0b0eafee709d478ab6d81faacb304
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/YooAsset/Runtime/PackageSystem/ResourcePackage.cs

@@ -251,6 +251,17 @@ namespace YooAsset
 			return operation;
 		}
 
+		/// <summary>
+		/// 清理包裹本地所有的缓存文件
+		/// </summary>
+		public ClearAllCacheFilesOperation ClearAllCacheFilesAsync()
+		{
+			DebugCheckInitialize();
+			var operation = new ClearAllCacheFilesOperation(this);
+			OperationSystem.StartOperation(operation);
+			return operation;
+		}
+
 		/// <summary>
 		/// 获取本地包裹的版本信息
 		/// </summary>