【m】框架大更新

Assets/03.YooAsset/Runtime/ResourcePackage/Operation/InitializationOperation.cs

@@ -0,0 +1,129 @@
+using System.Collections.Generic;
+using System.Linq;
+
+namespace YooAsset
+{
+    public class InitializationOperation : AsyncOperationBase
+    {
+        private enum ESteps
+        {
+            None,
+            Prepare,
+            ClearOldFileSystem,
+            InitFileSystem,
+            CheckInitResult,
+            Done,
+        }
+
+        private readonly PlayModeImpl _impl;
+        private readonly List<FileSystemParameters> _parametersList;
+        private List<FileSystemParameters> _cloneList;
+        private FSInitializeFileSystemOperation _initFileSystemOp;
+        private ESteps _steps = ESteps.None;
+
+        internal InitializationOperation(PlayModeImpl impl, List<FileSystemParameters> parametersList)
+        {
+            _impl = impl;
+            _parametersList = parametersList;
+        }
+        internal override void InternalStart()
+        {
+            _steps = ESteps.Prepare;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.Prepare)
+            {
+                if (_parametersList == null || _parametersList.Count == 0)
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = "The file system parameters is empty !";
+                    return;
+                }
+
+                foreach (var fileSystemParam in _parametersList)
+                {
+                    if (fileSystemParam == null)
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Failed;
+                        Error = "An empty object exists in the list!";
+                        return;
+                    }
+                }
+
+                _cloneList = _parametersList.ToList();
+                _steps = ESteps.ClearOldFileSystem;
+            }
+
+            if (_steps == ESteps.ClearOldFileSystem)
+            {
+                // 注意：初始化失败后可能会残存一些旧的文件系统！
+                foreach (var fileSystem in _impl.FileSystems)
+                {
+                    fileSystem.OnDestroy();
+                }
+
+                _impl.FileSystems.Clear();
+                _steps = ESteps.InitFileSystem;
+            }
+
+            if (_steps == ESteps.InitFileSystem)
+            {
+                if (_cloneList.Count == 0)
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Succeed;
+                }
+                else
+                {
+                    var fileSystemParams = _cloneList[0];
+                    _cloneList.RemoveAt(0);
+
+                    IFileSystem fileSystemInstance = fileSystemParams.CreateFileSystem(_impl.PackageName);
+                    if (fileSystemInstance == null)
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Failed;
+                        Error = "Failed to create file system instance !";
+                        return;
+                    }
+
+                    _impl.FileSystems.Add(fileSystemInstance);
+                    _initFileSystemOp = fileSystemInstance.InitializeFileSystemAsync();
+                    _initFileSystemOp.StartOperation();
+                    AddChildOperation(_initFileSystemOp);
+                    _steps = ESteps.CheckInitResult;
+                }
+            }
+
+            if (_steps == ESteps.CheckInitResult)
+            {
+                _initFileSystemOp.UpdateOperation();
+                Progress = _initFileSystemOp.Progress;
+                if (_initFileSystemOp.IsDone == false)
+                    return;
+
+                if (_initFileSystemOp.Status == EOperationStatus.Succeed)
+                {
+                    _steps = ESteps.InitFileSystem;
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = _initFileSystemOp.Error;
+                    return;
+                }
+            }
+        }
+        internal override string InternalGetDesc()
+        {
+            return $"PlayMode : {_impl.PlayMode}";
+        }
+    }
+}