增加微信小程序

Assets/00.StaryEvoTools/WechatFileSystem/Operation/internal/LoadWechatAssetBundleOperation.cs

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+#if UNITY_WEBGL && WEIXINMINIGAME
+using UnityEngine;
+
+namespace YooAsset
+{
+    internal class LoadWechatAssetBundleOperation : LoadWebAssetBundleOperation
+    {
+        protected enum ESteps
+        {
+            None,
+            CreateRequest,
+            CheckRequest,
+            TryAgain,
+            Done,
+        }
+
+        private readonly PackageBundle _bundle;
+        private readonly DownloadFileOptions _options;
+        private UnityWechatAssetBundleRequestOperation _unityAssetBundleRequestOp;
+
+        private int _requestCount = 0;
+        private float _tryAgainTimer = 0;
+        private int _failedTryAgain;
+        private ESteps _steps = ESteps.None;
+
+
+        internal LoadWechatAssetBundleOperation(PackageBundle bundle, DownloadFileOptions options)
+        {
+            _bundle = bundle;
+            _options = options;
+            _failedTryAgain = options.FailedTryAgain;
+        }
+        internal override void InternalStart()
+        {
+            _steps = ESteps.CreateRequest;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            // 创建下载器
+            if (_steps == ESteps.CreateRequest)
+            {
+                string url = GetRequestURL();
+                _unityAssetBundleRequestOp = new UnityWechatAssetBundleRequestOperation(_bundle, url);
+                _unityAssetBundleRequestOp.StartOperation();
+                AddChildOperation(_unityAssetBundleRequestOp);
+                _steps = ESteps.CheckRequest;
+            }
+
+            // 检测下载结果
+            if (_steps == ESteps.CheckRequest)
+            {
+                _unityAssetBundleRequestOp.UpdateOperation();
+                Progress = _unityAssetBundleRequestOp.Progress;
+                DownloadProgress = _unityAssetBundleRequestOp.DownloadProgress;
+                DownloadedBytes = _unityAssetBundleRequestOp.DownloadedBytes;
+                if (_unityAssetBundleRequestOp.IsDone == false)
+                    return;
+
+                if (_unityAssetBundleRequestOp.Status == EOperationStatus.Succeed)
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Succeed;
+                    Result = _unityAssetBundleRequestOp.Result;
+                }
+                else
+                {
+                    if (_failedTryAgain > 0)
+                    {
+                        _steps = ESteps.TryAgain;
+                        YooLogger.Warning($"Failed download : {_unityAssetBundleRequestOp.URL} Try again !");
+                    }
+                    else
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Failed;
+                        Error = _unityAssetBundleRequestOp.Error;
+                        YooLogger.Error(Error);
+                    }
+                }
+            }
+
+            // 重新尝试下载
+            if (_steps == ESteps.TryAgain)
+            {
+                _tryAgainTimer += Time.unscaledDeltaTime;
+                if (_tryAgainTimer > 1f)
+                {
+                    _tryAgainTimer = 0f;
+                    _failedTryAgain--;
+                    Progress = 0f;
+                    DownloadProgress = 0f;
+                    DownloadedBytes = 0;
+                    _steps = ESteps.CreateRequest;
+                }
+            }
+        }
+
+        /// <summary>
+        /// 获取网络请求地址
+        /// </summary>
+        protected string GetRequestURL()
+        {
+            // 轮流返回请求地址
+            _requestCount++;
+            if (_requestCount % 2 == 0)
+                return _options.FallbackURL;
+            else
+                return _options.MainURL;
+        }
+    }
+}
+#endif

Assets/00.StaryEvoTools/WechatFileSystem/Operation/internal/LoadWechatAssetBundleOperation.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 9ccd1061504155f44847e21683b57ec7
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/00.StaryEvoTools/WechatFileSystem/Operation/internal/UnityWechatAssetBundleRequestOperation.cs

@@ -0,0 +1,96 @@
+#if UNITY_WEBGL && WEIXINMINIGAME
+using UnityEngine.Networking;
+using UnityEngine;
+using WeChatWASM;
+
+namespace YooAsset
+{
+    internal class UnityWechatAssetBundleRequestOperation : UnityWebRequestOperation
+    {
+        protected enum ESteps
+        {
+            None,
+            CreateRequest,
+            Download,
+            Done,
+        }
+
+        private readonly PackageBundle _packageBundle;
+        private UnityWebRequestAsyncOperation _requestOperation;
+        private ESteps _steps = ESteps.None;
+
+        /// <summary>
+        /// 请求结果
+        /// </summary>
+        public AssetBundle Result { private set; get; }
+
+        internal UnityWechatAssetBundleRequestOperation(PackageBundle bundle, string url) : base(url)
+        {
+            _packageBundle = bundle;
+        }
+        internal override void InternalStart()
+        {
+            _steps = ESteps.CreateRequest;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.CreateRequest)
+            {
+                CreateWebRequest();
+                _steps = ESteps.Download;
+            }
+
+            if (_steps == ESteps.Download)
+            {
+                DownloadProgress = _webRequest.downloadProgress;
+                DownloadedBytes = (long)_webRequest.downloadedBytes;
+                Progress = _requestOperation.progress;
+                if (_requestOperation.isDone == false)
+                    return;
+
+                if (CheckRequestResult())
+                {
+                    var downloadHanlder = (DownloadHandlerWXAssetBundle)_webRequest.downloadHandler;
+                    AssetBundle assetBundle = downloadHanlder.assetBundle;
+                    if (assetBundle == null)
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Failed;
+                        Error = $"URL : {_requestURL} Download handler asset bundle object is null !";
+                    }
+                    else
+                    {
+                        _steps = ESteps.Done;
+                        Result = assetBundle;
+                        Status = EOperationStatus.Succeed;
+
+                        //TODO 解决微信小游戏插件问题
+                        // Issue : https://github.com/wechat-miniprogram/minigame-unity-webgl-transform/issues/108#
+                        DownloadProgress = 1f;
+                        DownloadedBytes = _packageBundle.FileSize;
+                        Progress = 1f;
+                    }
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                }
+
+                // 注意：最终释放请求器
+                DisposeRequest();
+            }
+        }
+
+        private void CreateWebRequest()
+        {
+            _webRequest = WXAssetBundle.GetAssetBundle(_requestURL);
+            _webRequest.disposeDownloadHandlerOnDispose = true;
+            _requestOperation = _webRequest.SendWebRequest();
+        }
+    }
+}
+#endif

Assets/00.StaryEvoTools/WechatFileSystem/Operation/internal/UnityWechatAssetBundleRequestOperation.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: c66c1c3728b99b74fbfe1363e3e76704
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: