refactor : default cache file system

Assets/YooAsset/Runtime/FileSystem/DefaultUnpackFileSystem/DefaultUnpackFileSystem.cs

@@ -14,7 +14,7 @@ namespace YooAsset
             base.OnCreate(packageName, rootDirectory);
 
             // 注意：重写保存根目录和临时目录
-            _saveFileRoot = PathUtility.Combine(_packageRoot, DefaultUnpackFileSystemDefine.SaveFilesFolderName);
+            _cacheFileRoot = PathUtility.Combine(_packageRoot, DefaultUnpackFileSystemDefine.SaveFilesFolderName);
             _tempFileRoot = PathUtility.Combine(_packageRoot, DefaultUnpackFileSystemDefine.TempFilesFolderName);
         }
     }

Assets/YooAsset/Runtime/FileSystem/DefaultUnpackFileSystem/DefaultUnpackRemoteServices.cs

@@ -0,0 +1,34 @@
+using System.Collections.Generic;
+
+namespace YooAsset
+{
+    internal class DefaultUnpackRemoteServices : IRemoteServices
+    {
+        private readonly string _buildinPackageRoot;
+        protected readonly Dictionary<string, string> _mapping = new Dictionary<string, string>(10000);
+
+        public DefaultUnpackRemoteServices(string buildinPackRoot)
+        {
+            _buildinPackageRoot = buildinPackRoot;
+        }
+        string IRemoteServices.GetRemoteMainURL(string fileName)
+        {
+            return GetFileLoadURL(fileName);
+        }
+        string IRemoteServices.GetRemoteFallbackURL(string fileName)
+        {
+            return GetFileLoadURL(fileName);
+        }
+
+        private string GetFileLoadURL(string fileName)
+        {
+            if (_mapping.TryGetValue(fileName, out string url) == false)
+            {
+                string filePath = PathUtility.Combine(_buildinPackageRoot, fileName);
+                url = DownloadSystemHelper.ConvertToWWWPath(filePath);
+                _mapping.Add(fileName, url);
+            }
+            return url;
+        }
+    }
+}

Assets/YooAsset/Runtime/FileSystem/DefaultUnpackFileSystem/DefaultUnpackRemoteServices.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 32c355598c9dff847af87f4a867a2d5c
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: