offline play mode supports WebGL platform.

离线运行模式支持WEBGL平台。

Assets/YooAsset/Editor/AssetBundleDebugger/VisualViewers/BundleListDebuggerViewer.cs

@@ -163,7 +163,7 @@ namespace YooAsset.Editor
 
 			// Status
 			StyleColor textColor;
-			if (bundleInfo.Status == AssetBundleLoader.EStatus.Fail)
+			if (bundleInfo.Status == AssetBundleLoaderBase.EStatus.Failed)
 				textColor = new StyleColor(Color.yellow);
 			else
 				textColor = label1.style.color;

Assets/YooAsset/Runtime/AssetSystem/AssetSystem.cs

@@ -8,7 +8,7 @@ namespace YooAsset
 {
 	internal static class AssetSystem
 	{
-		private static readonly List<AssetBundleLoader> _loaders = new List<AssetBundleLoader>(1000);
+		private static readonly List<AssetBundleLoaderBase> _loaders = new List<AssetBundleLoaderBase>(1000);
 		private static readonly List<ProviderBase> _providers = new List<ProviderBase>(1000);
 
 		/// <summary>
@@ -90,12 +90,12 @@ namespace YooAsset
 			{
 				for (int i = _loaders.Count - 1; i >= 0; i--)
 				{
-					AssetBundleLoader loader = _loaders[i];
+					AssetBundleLoaderBase loader = _loaders[i];
 					loader.TryDestroyAllProviders();
 				}
 				for (int i = _loaders.Count - 1; i >= 0; i--)
 				{
-					AssetBundleLoader loader = _loaders[i];
+					AssetBundleLoaderBase loader = _loaders[i];
 					if (loader.CanDestroy())
 					{
 						loader.Destroy(false);
@@ -191,22 +191,22 @@ namespace YooAsset
 		}
 
 
-		internal static AssetBundleLoader CreateOwnerAssetBundleLoader(string assetPath)
+		internal static AssetBundleLoaderBase CreateOwnerAssetBundleLoader(string assetPath)
 		{
 			string bundleName = BundleServices.GetBundleName(assetPath);
 			BundleInfo bundleInfo = BundleServices.GetBundleInfo(bundleName);
 			return CreateAssetBundleLoaderInternal(bundleInfo);
 		}
-		internal static List<AssetBundleLoader> CreateDependAssetBundleLoaders(string assetPath)
+		internal static List<AssetBundleLoaderBase> CreateDependAssetBundleLoaders(string assetPath)
 		{
-			List<AssetBundleLoader> result = new List<AssetBundleLoader>();
+			List<AssetBundleLoaderBase> result = new List<AssetBundleLoaderBase>();
 			string[] depends = BundleServices.GetAllDependencies(assetPath);
 			if (depends != null)
 			{
 				foreach (var dependBundleName in depends)
 				{
 					BundleInfo dependBundleInfo = BundleServices.GetBundleInfo(dependBundleName);
-					AssetBundleLoader dependLoader = CreateAssetBundleLoaderInternal(dependBundleInfo);
+					AssetBundleLoaderBase dependLoader = CreateAssetBundleLoaderInternal(dependBundleInfo);
 					result.Add(dependLoader);
 				}
 			}
@@ -220,24 +220,29 @@ namespace YooAsset
 			}
 		}
 
-		private static AssetBundleLoader CreateAssetBundleLoaderInternal(BundleInfo bundleInfo)
+		private static AssetBundleLoaderBase CreateAssetBundleLoaderInternal(BundleInfo bundleInfo)
 		{
 			// 如果加载器已经存在
-			AssetBundleLoader loader = TryGetAssetBundleLoader(bundleInfo.BundleName);
+			AssetBundleLoaderBase loader = TryGetAssetBundleLoader(bundleInfo.BundleName);
 			if (loader != null)
 				return loader;
 
 			// 新增下载需求
-			loader = new AssetBundleLoader(bundleInfo);
+#if UNITY_WEBGL
+			loader = new AssetBundleWebLoader(bundleInfo);
+#else
+			loader = new AssetBundleFileLoader(bundleInfo);
+#endif
+
 			_loaders.Add(loader);
 			return loader;
 		}
-		private static AssetBundleLoader TryGetAssetBundleLoader(string bundleName)
+		private static AssetBundleLoaderBase TryGetAssetBundleLoader(string bundleName)
 		{
-			AssetBundleLoader loader = null;
+			AssetBundleLoaderBase loader = null;
 			for (int i = 0; i < _loaders.Count; i++)
 			{
-				AssetBundleLoader temp = _loaders[i];
+				AssetBundleLoaderBase temp = _loaders[i];
 				if (temp.BundleFileInfo.BundleName.Equals(bundleName))
 				{
 					loader = temp;

Assets/YooAsset/Runtime/AssetSystem/Loader/AssetBundleFileLoader.cs

@@ -0,0 +1,183 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace YooAsset
+{
+	internal sealed class AssetBundleFileLoader : AssetBundleLoaderBase
+	{
+		private enum ESteps
+		{
+			None = 0,
+			Download,
+			CheckDownload,
+			LoadFile,
+			CheckFile,
+			Done,
+		}
+
+		private ESteps _steps = ESteps.None;
+		private bool _isWaitForAsyncComplete = false;
+		private bool _isShowWaitForAsyncError = false;
+		private DownloaderBase _downloader;
+		private AssetBundleCreateRequest _cacheRequest;
+
+
+		public AssetBundleFileLoader(BundleInfo bundleInfo) : base(bundleInfo)
+		{
+		}
+
+		/// <summary>
+		/// 轮询更新
+		/// </summary>
+		public override void Update()
+		{
+			if (_steps == ESteps.Done)
+				return;
+
+			if (_steps == ESteps.None)
+			{
+				// 检测加载地址是否为空
+				if (string.IsNullOrEmpty(BundleFileInfo.LocalPath))
+				{
+					_steps = ESteps.Done;
+					Status = EStatus.Failed;
+					return;
+				}
+
+				if (string.IsNullOrEmpty(BundleFileInfo.RemoteMainURL))
+					_steps = ESteps.LoadFile;
+				else
+					_steps = ESteps.Download;
+			}
+
+			// 1. 从服务器下载
+			if (_steps == ESteps.Download)
+			{
+				int failedTryAgain = int.MaxValue;
+				_downloader = DownloadSystem.BeginDownload(BundleFileInfo, failedTryAgain);
+				_steps = ESteps.CheckDownload;
+			}
+
+			// 2. 检测服务器下载结果
+			if (_steps == ESteps.CheckDownload)
+			{
+				if (_downloader.IsDone() == false)
+					return;
+
+				if (_downloader.HasError())
+				{
+					_downloader.ReportError();
+					_steps = ESteps.Done;
+					Status = EStatus.Failed;
+				}
+				else
+				{
+					_steps = ESteps.LoadFile;
+				}
+			}
+
+			// 3. 加载AssetBundle
+			if (_steps == ESteps.LoadFile)
+			{
+#if UNITY_EDITOR
+				// 注意：Unity2017.4编辑器模式下，如果AssetBundle文件不存在会导致编辑器崩溃，这里做了预判。
+				if (System.IO.File.Exists(BundleFileInfo.LocalPath) == false)
+				{
+					YooLogger.Warning($"Not found assetBundle file : {BundleFileInfo.LocalPath}");
+					_steps = ESteps.Done;
+					Status = EStatus.Failed;
+					return;
+				}
+#endif
+
+				// Load assetBundle file
+				if (BundleFileInfo.IsEncrypted)
+				{
+					if (AssetSystem.DecryptionServices == null)
+						throw new Exception($"{nameof(AssetBundleFileLoader)} need IDecryptServices : {BundleFileInfo.BundleName}");
+
+					ulong offset = AssetSystem.DecryptionServices.GetFileOffset(BundleFileInfo);
+					if (_isWaitForAsyncComplete)
+						CacheBundle = AssetBundle.LoadFromFile(BundleFileInfo.LocalPath, 0, offset);
+					else
+						_cacheRequest = AssetBundle.LoadFromFileAsync(BundleFileInfo.LocalPath, 0, offset);
+				}
+				else
+				{
+					if (_isWaitForAsyncComplete)
+						CacheBundle = AssetBundle.LoadFromFile(BundleFileInfo.LocalPath);
+					else
+						_cacheRequest = AssetBundle.LoadFromFileAsync(BundleFileInfo.LocalPath);
+				}
+				_steps = ESteps.CheckFile;
+			}
+
+			// 4. 检测AssetBundle加载结果
+			if (_steps == ESteps.CheckFile)
+			{
+				if (_cacheRequest != null)
+				{
+					if (_isWaitForAsyncComplete)
+					{
+						// 强制挂起主线程（注意：该操作会很耗时）
+						YooLogger.Warning("Suspend the main thread to load unity bundle.");
+						CacheBundle = _cacheRequest.assetBundle;
+					}
+					else
+					{
+						if (_cacheRequest.isDone == false)
+							return;
+						CacheBundle = _cacheRequest.assetBundle;
+					}
+				}
+
+				// Check error			
+				if (CacheBundle == null)
+				{
+					YooLogger.Error($"Failed to load assetBundle file : {BundleFileInfo.BundleName}");
+					_steps = ESteps.Done;
+					Status = EStatus.Failed;
+				}
+				else
+				{
+					_steps = ESteps.Done;
+					Status = EStatus.Succeed;
+				}
+			}
+		}
+
+		/// <summary>
+		/// 主线程等待异步操作完毕
+		/// </summary>
+		public override void WaitForAsyncComplete()
+		{
+			_isWaitForAsyncComplete = true;
+
+			int frame = 1000;
+			while (true)
+			{
+				// 保险机制
+				// 注意：如果需要从WEB端下载资源，可能会触发保险机制！
+				frame--;
+				if (frame == 0)
+				{
+					if (_isShowWaitForAsyncError == false)
+					{
+						_isShowWaitForAsyncError = true;
+						YooLogger.Error($"WaitForAsyncComplete failed ! BundleName : {BundleFileInfo.BundleName} States : {Status}");
+					}
+					break;
+				}
+
+				// 驱动流程
+				Update();
+
+				// 完成后退出
+				if (IsDone())
+					break;
+			}
+		}
+	}
+}

Assets/YooAsset/Runtime/AssetSystem/Loader/AssetBundleLoader.cs

@@ -1,301 +0,0 @@
-using System;
-using System.Collections;
-using System.Collections.Generic;
-using UnityEngine;
-
-namespace YooAsset
-{
-	internal class AssetBundleLoader
-	{
-		public enum EStatus
-		{
-			None = 0,
-			Download,
-			CheckDownload,
-			LoadFile,
-			CheckFile,
-			Success,
-			Fail,
-		}
-
-		/// <summary>
-		/// 资源包文件信息
-		/// </summary>
-		public BundleInfo BundleFileInfo { private set; get; }
-
-		/// <summary>
-		/// 引用计数
-		/// </summary>
-		public int RefCount { private set; get; }
-
-		/// <summary>
-		/// 加载状态
-		/// </summary>
-		public EStatus Status { private set; get; }
-
-		/// <summary>
-		/// 是否已经销毁
-		/// </summary>
-		public bool IsDestroyed { private set; get; } = false;
-
-		private readonly List<ProviderBase> _providers = new List<ProviderBase>(100);
-		private bool _isWaitForAsyncComplete = false;
-		private bool _isShowWaitForAsyncError = false;
-		private DownloaderBase _downloader;
-		private AssetBundleCreateRequest _cacheRequest;
-		internal AssetBundle CacheBundle { private set; get; }
-
-
-		public AssetBundleLoader(BundleInfo bundleInfo)
-		{
-			BundleFileInfo = bundleInfo;
-			RefCount = 0;
-			Status = EStatus.None;
-		}
-
-		/// <summary>
-		/// 添加附属的资源提供者
-		/// </summary>
-		public void AddProvider(ProviderBase provider)
-		{
-			if (_providers.Contains(provider) == false)
-				_providers.Add(provider);
-		}
-
-		/// <summary>
-		/// 引用（引用计数递加）
-		/// </summary>
-		public void Reference()
-		{
-			RefCount++;
-		}
-
-		/// <summary>
-		/// 释放（引用计数递减）
-		/// </summary>
-		public void Release()
-		{
-			RefCount--;
-		}
-
-		/// <summary>
-		/// 轮询更新
-		/// </summary>
-		public void Update()
-		{
-			// 如果资源文件加载完毕
-			if (IsDone())
-				return;
-
-			if (Status == EStatus.None)
-			{
-				// 检测加载地址是否为空
-				if (string.IsNullOrEmpty(BundleFileInfo.LocalPath))
-				{
-					Status = EStatus.Fail;
-					return;
-				}
-
-				if (string.IsNullOrEmpty(BundleFileInfo.RemoteMainURL))
-					Status = EStatus.LoadFile;
-				else
-					Status = EStatus.Download;
-			}
-
-			// 1. 从服务器下载
-			if (Status == EStatus.Download)
-			{
-				int failedTryAgain = int.MaxValue;
-				_downloader = DownloadSystem.BeginDownload(BundleFileInfo, failedTryAgain);
-				Status = EStatus.CheckDownload;
-			}
-
-			// 2. 检测服务器下载结果
-			if (Status == EStatus.CheckDownload)
-			{
-				if (_downloader.IsDone() == false)
-					return;
-
-				if (_downloader.HasError())
-				{
-					_downloader.ReportError();
-					Status = EStatus.Fail;
-				}
-				else
-				{
-					Status = EStatus.LoadFile;
-				}
-			}
-
-			// 3. 加载AssetBundle
-			if (Status == EStatus.LoadFile)
-			{
-#if UNITY_EDITOR
-				// 注意：Unity2017.4编辑器模式下，如果AssetBundle文件不存在会导致编辑器崩溃，这里做了预判。
-				if (System.IO.File.Exists(BundleFileInfo.LocalPath) == false)
-				{
-					YooLogger.Warning($"Not found assetBundle file : {BundleFileInfo.LocalPath}");
-					Status = EStatus.Fail;
-					return;
-				}
-#endif
-
-				// Load assetBundle file
-				if (BundleFileInfo.IsEncrypted)
-				{
-					if (AssetSystem.DecryptionServices == null)
-						throw new Exception($"{nameof(AssetBundleLoader)} need IDecryptServices : {BundleFileInfo.BundleName}");
-
-					ulong offset = AssetSystem.DecryptionServices.GetFileOffset(BundleFileInfo);
-					if (_isWaitForAsyncComplete)
-						CacheBundle = AssetBundle.LoadFromFile(BundleFileInfo.LocalPath, 0, offset);
-					else
-						_cacheRequest = AssetBundle.LoadFromFileAsync(BundleFileInfo.LocalPath, 0, offset);
-				}
-				else
-				{
-					if (_isWaitForAsyncComplete)
-						CacheBundle = AssetBundle.LoadFromFile(BundleFileInfo.LocalPath);
-					else
-						_cacheRequest = AssetBundle.LoadFromFileAsync(BundleFileInfo.LocalPath);
-				}
-				Status = EStatus.CheckFile;
-			}
-
-			// 4. 检测AssetBundle加载结果
-			if (Status == EStatus.CheckFile)
-			{
-				if (_cacheRequest != null)
-				{
-					if (_isWaitForAsyncComplete)
-					{
-						// 强制挂起主线程（注意：该操作会很耗时）
-						YooLogger.Warning("Suspend the main thread to load unity bundle.");
-						CacheBundle = _cacheRequest.assetBundle;
-					}
-					else
-					{
-						if (_cacheRequest.isDone == false)
-							return;
-						CacheBundle = _cacheRequest.assetBundle;
-					}
-				}
-
-				// Check error
-				if (CacheBundle == null)
-				{
-					YooLogger.Error($"Failed to load assetBundle file : {BundleFileInfo.BundleName}");
-					Status = EStatus.Fail;
-				}
-				else
-				{
-					Status = EStatus.Success;
-				}
-			}
-		}
-
-		/// <summary>
-		/// 销毁
-		/// </summary>
-		public void Destroy(bool forceDestroy)
-		{
-			IsDestroyed = true;
-
-			// Check fatal
-			if (forceDestroy == false)
-			{
-				if (RefCount > 0)
-					throw new Exception($"Bundle file loader ref is not zero : {BundleFileInfo.BundleName}");
-				if (IsDone() == false)
-					throw new Exception($"Bundle file loader is not done : {BundleFileInfo.BundleName}");
-			}
-
-			if (CacheBundle != null)
-			{
-				CacheBundle.Unload(true);
-				CacheBundle = null;
-			}
-		}
-
-		/// <summary>
-		/// 是否完毕（无论成功或失败）
-		/// </summary>
-		public bool IsDone()
-		{
-			return Status == EStatus.Success || Status == EStatus.Fail;
-		}
-
-		/// <summary>
-		/// 是否可以销毁
-		/// </summary>
-		public bool CanDestroy()
-		{
-			if (IsDone() == false)
-				return false;
-
-			return RefCount <= 0;
-		}
-
-		/// <summary>
-		/// 在满足条件的前提下，销毁所有资源提供者
-		/// </summary>
-		public void TryDestroyAllProviders()
-		{
-			if (IsDone() == false)
-				return;
-
-			// 注意：必须等待所有Provider可以销毁的时候，才可以释放Bundle文件。
-			foreach (var provider in _providers)
-			{
-				if (provider.CanDestroy() == false)
-					return;
-			}
-
-			// 除了自己没有其它引用
-			if (RefCount > _providers.Count)
-				return;
-
-			// 销毁所有Providers
-			foreach (var provider in _providers)
-			{
-				provider.Destory();
-			}
-
-			// 从列表里移除Providers
-			AssetSystem.RemoveBundleProviders(_providers);
-			_providers.Clear();
-		}
-
-		/// <summary>
-		/// 主线程等待异步操作完毕
-		/// </summary>
-		public void WaitForAsyncComplete()
-		{
-			_isWaitForAsyncComplete = true;
-
-			int frame = 1000;
-			while (true)
-			{
-				// 保险机制
-				// 注意：如果需要从WEB端下载资源，可能会触发保险机制！
-				frame--;
-				if (frame == 0)
-				{
-					if (_isShowWaitForAsyncError == false)
-					{
-						_isShowWaitForAsyncError = true;
-						YooLogger.Error($"WaitForAsyncComplete failed ! BundleName : {BundleFileInfo.BundleName} States : {Status}");
-					}
-					break;
-				}
-
-				// 驱动流程
-				Update();
-
-				// 完成后退出
-				if (IsDone())
-					break;
-			}
-		}
-	}
-}

Assets/YooAsset/Runtime/AssetSystem/Loader/AssetBundleLoaderBase.cs

@@ -0,0 +1,155 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace YooAsset
+{
+	internal abstract class AssetBundleLoaderBase
+	{
+		public enum EStatus
+		{
+			None = 0,
+			Succeed,
+			Failed
+		}
+
+		/// <summary>
+		/// 资源包文件信息
+		/// </summary>
+		public BundleInfo BundleFileInfo { private set; get; }
+
+		/// <summary>
+		/// 引用计数
+		/// </summary>
+		public int RefCount { private set; get; }
+
+		/// <summary>
+		/// 加载状态
+		/// </summary>
+		public EStatus Status { protected set; get; }
+
+		/// <summary>
+		/// 是否已经销毁
+		/// </summary>
+		public bool IsDestroyed { private set; get; } = false;
+
+		private readonly List<ProviderBase> _providers = new List<ProviderBase>(100);
+		internal AssetBundle CacheBundle { set; get; }
+
+
+		public AssetBundleLoaderBase(BundleInfo bundleInfo)
+		{
+			BundleFileInfo = bundleInfo;
+			RefCount = 0;
+			Status = EStatus.None;
+		}
+
+		/// <summary>
+		/// 添加附属的资源提供者
+		/// </summary>
+		public void AddProvider(ProviderBase provider)
+		{
+			if (_providers.Contains(provider) == false)
+				_providers.Add(provider);
+		}
+
+		/// <summary>
+		/// 引用（引用计数递加）
+		/// </summary>
+		public void Reference()
+		{
+			RefCount++;
+		}
+
+		/// <summary>
+		/// 释放（引用计数递减）
+		/// </summary>
+		public void Release()
+		{
+			RefCount--;
+		}
+
+		/// <summary>
+		/// 轮询更新
+		/// </summary>
+		public abstract void Update();
+	
+		/// <summary>
+		/// 销毁
+		/// </summary>
+		public void Destroy(bool forceDestroy)
+		{
+			IsDestroyed = true;
+
+			// Check fatal
+			if (forceDestroy == false)
+			{
+				if (RefCount > 0)
+					throw new Exception($"Bundle file loader ref is not zero : {BundleFileInfo.BundleName}");
+				if (IsDone() == false)
+					throw new Exception($"Bundle file loader is not done : {BundleFileInfo.BundleName}");
+			}
+
+			if (CacheBundle != null)
+			{
+				CacheBundle.Unload(true);
+				CacheBundle = null;
+			}
+		}
+
+		/// <summary>
+		/// 是否完毕（无论成功或失败）
+		/// </summary>
+		public bool IsDone()
+		{
+			return Status == EStatus.Succeed || Status == EStatus.Failed;
+		}
+
+		/// <summary>
+		/// 是否可以销毁
+		/// </summary>
+		public bool CanDestroy()
+		{
+			if (IsDone() == false)
+				return false;
+
+			return RefCount <= 0;
+		}
+
+		/// <summary>
+		/// 在满足条件的前提下，销毁所有资源提供者
+		/// </summary>
+		public void TryDestroyAllProviders()
+		{
+			if (IsDone() == false)
+				return;
+
+			// 注意：必须等待所有Provider可以销毁的时候，才可以释放Bundle文件。
+			foreach (var provider in _providers)
+			{
+				if (provider.CanDestroy() == false)
+					return;
+			}
+
+			// 除了自己没有其它引用
+			if (RefCount > _providers.Count)
+				return;
+
+			// 销毁所有Providers
+			foreach (var provider in _providers)
+			{
+				provider.Destory();
+			}
+
+			// 从列表里移除Providers
+			AssetSystem.RemoveBundleProviders(_providers);
+			_providers.Clear();
+		}
+
+		/// <summary>
+		/// 主线程等待异步操作完毕
+		/// </summary>
+		public abstract void WaitForAsyncComplete();
+	}
+}

Assets/YooAsset/Runtime/AssetSystem/Loader/AssetBundleLoaderBase.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: b8aaabc43e74af14d8eb3c7c85e19cda
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/YooAsset/Runtime/AssetSystem/Loader/AssetBundleWebLoader.cs

@@ -0,0 +1,118 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Networking;
+
+namespace YooAsset
+{
+	internal sealed class AssetBundleWebLoader : AssetBundleLoaderBase
+	{
+		private enum ESteps
+		{
+			None = 0,
+			LoadFile,
+			CheckFile,
+			TryLoad,
+			Done,
+		}
+
+		private ESteps _steps = ESteps.None;
+		private float _tryTimer = 0;
+		private string _webURL;
+		private UnityWebRequest _webRequest;
+
+
+		public AssetBundleWebLoader(BundleInfo bundleInfo) : base(bundleInfo)
+		{
+		}
+
+		/// <summary>
+		/// 轮询更新
+		/// </summary>
+		public override void Update()
+		{
+			if (_steps == ESteps.Done)
+				return;
+
+			if (_steps == ESteps.None)
+			{
+				// 检测加载地址是否为空
+				if (string.IsNullOrEmpty(BundleFileInfo.LocalPath))
+				{
+					_steps = ESteps.Done;
+					Status = EStatus.Failed;
+					return;
+				}
+
+				if (string.IsNullOrEmpty(BundleFileInfo.RemoteMainURL))
+					_webURL = BundleFileInfo.LocalPath;
+				else
+					_webURL = BundleFileInfo.RemoteMainURL;
+				_steps = ESteps.LoadFile;
+			}
+
+			// 1. 从服务器或缓存中获取AssetBundle文件
+			if (_steps == ESteps.LoadFile)
+			{
+				string hash = StringUtility.RemoveExtension(BundleFileInfo.Hash);
+				_webRequest = UnityWebRequestAssetBundle.GetAssetBundle(_webURL, Hash128.Parse(hash));
+				_webRequest.SendWebRequest();
+				_steps = ESteps.CheckFile;
+			}
+
+			// 2. 检测获取的AssetBundle文件
+			if (_steps == ESteps.CheckFile)
+			{
+				if (_webRequest.isDone == false)
+					return;
+
+#if UNITY_2020_1_OR_NEWER
+				if (_webRequest.result != UnityWebRequest.Result.Success)
+#else
+				if (_webRequest.isNetworkError || _webRequest.isHttpError)
+#endif
+				{
+					Debug.LogWarning($"Failed to get asset bundle form web : {_webURL} Error : {_webRequest.error}");
+					_steps = ESteps.TryLoad;
+					_tryTimer = 0;
+				}
+				else
+				{
+					CacheBundle = DownloadHandlerAssetBundle.GetContent(_webRequest);
+					if (CacheBundle == null)
+					{
+						Debug.LogError($"Get asset bundle error : {_webRequest.error}");
+						_steps = ESteps.Done;
+						Status = EStatus.Failed;
+					}
+					else
+					{
+						_steps = ESteps.Done;
+						Status = EStatus.Succeed;
+					}
+				}
+			}
+
+			// 3. 如果获取失败，重新尝试
+			if (_steps == ESteps.TryLoad)
+			{
+				_tryTimer += Time.unscaledDeltaTime;
+				if (_tryTimer > 1f)
+				{
+					_webRequest.Dispose();
+					_webRequest = null;
+					_steps = ESteps.LoadFile;
+				}
+			}
+		}
+
+		/// <summary>
+		/// 主线程等待异步操作完毕
+		/// </summary>
+		public override void WaitForAsyncComplete()
+		{
+			throw new System.NotImplementedException($"WebGL platform not support {nameof(WaitForAsyncComplete)}");
+		}
+	}
+}

Assets/YooAsset/Runtime/AssetSystem/Loader/AssetBundleWebLoader.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: bd1ad395c62c5804589ec9b267ea0484
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/YooAsset/Runtime/AssetSystem/Loader/DependAssetBundleGrouper.cs

@@ -9,7 +9,7 @@ namespace YooAsset
 		/// <summary>
 		/// 依赖的资源包加载器列表
 		/// </summary>
-		private readonly List<AssetBundleLoader> _dependBundles;
+		private readonly List<AssetBundleLoaderBase> _dependBundles;
 
 		public DependAssetBundleGrouper(string assetPath)
 		{

Assets/YooAsset/Runtime/AssetSystem/Provider/BundledProvider.cs

@@ -5,7 +5,7 @@ namespace YooAsset
 {
     internal abstract class BundledProvider : ProviderBase
     {
-		protected AssetBundleLoader OwnerBundle { private set; get; }
+		protected AssetBundleLoaderBase OwnerBundle { private set; get; }
 		protected DependAssetBundleGrouper DependBundles { private set; get; }
 
 		public BundledProvider(string assetPath, System.Type assetType) : base(assetPath, assetType)

Assets/YooAsset/Runtime/Debugger/DebugBundleInfo.cs

@@ -21,6 +21,6 @@ namespace YooAsset
 		/// <summary>
 		/// 加载状态
 		/// </summary>
-		public AssetBundleLoader.EStatus Status { set; get; }
+		public AssetBundleLoaderBase.EStatus Status { set; get; }
 	}
 }

Assets/YooAsset/Runtime/Utility/YooHelper.cs

@@ -61,7 +61,6 @@ namespace YooAsset
 		/// </summary>
 		public static string ConvertToWWWPath(string path)
 		{
-			// 注意：WWW加载方式，必须要在路径前面加file://
 #if UNITY_EDITOR
 			return StringUtility.Format("file:///{0}", path);
 #elif UNITY_IPHONE
@@ -70,6 +69,8 @@ namespace YooAsset
 			return path;
 #elif UNITY_STANDALONE
 			return StringUtility.Format("file:///{0}", path);
+#elif UNITY_WEBGL
+			return path;
 #endif
 		}
 
@@ -203,7 +204,6 @@ namespace YooAsset
 		/// 获取沙盒内补丁清单文件的哈希值
 		/// 注意：如果沙盒内补丁清单文件不存在，返回空字符串
 		/// </summary>
-		/// <returns></returns>
 		public static string GetSandboxPatchManifestFileHash()
 		{
 			string filePath = PathHelper.MakePersistentLoadPath(YooAssetSettingsData.Setting.PatchManifestFileName);

Assets/YooAsset/Runtime/YooAssets.cs

@@ -176,8 +176,12 @@ namespace YooAsset
 			// 初始化下载系统
 			if (_playMode == EPlayMode.HostPlayMode)
 			{
+#if UNITY_WEBGL
+				throw new Exception($"{EPlayMode.HostPlayMode} not supports WebGL platform !");
+#else
 				var hostPlayModeParameters = parameters as HostPlayModeParameters;
 				DownloadSystem.Initialize(hostPlayModeParameters.BreakpointResumeFileSize);
+#endif
 			}
 
 			// 初始化资源系统