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https://github.com/Alex-Rachel/TEngine.git
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yoo2.2,9
yoo2.2,9
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@@ -0,0 +1,130 @@
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using UnityEngine;
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using UnityEngine.Networking;
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namespace YooAsset
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{
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internal abstract class DefaultDownloadFileOperation : FSDownloadFileOperation
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{
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protected enum ESteps
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{
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None,
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CheckExists,
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CreateRequest,
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CheckRequest,
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VerifyTempFile,
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CheckVerifyTempFile,
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TryAgain,
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Done,
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}
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// 下载参数
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protected readonly DownloadParam Param;
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// 请求相关
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protected UnityWebRequest _webRequest;
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protected string _requestURL;
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protected int _requestCount = 0;
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// 超时相关
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protected bool _isAbort = false;
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protected long _latestDownloadBytes;
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protected float _latestDownloadRealtime;
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protected float _tryAgainTimer;
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// 失败相关
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protected int FailedTryAgain;
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internal DefaultDownloadFileOperation(PackageBundle bundle, DownloadParam param) : base(bundle)
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{
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Param = param;
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FailedTryAgain = param.FailedTryAgain;
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}
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/// <summary>
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/// 获取网络请求地址
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/// </summary>
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protected string GetRequestURL()
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{
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// 轮流返回请求地址
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_requestCount++;
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if (_requestCount % 2 == 0)
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return Param.FallbackURL;
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else
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return Param.MainURL;
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}
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/// <summary>
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/// 重置请求字段
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/// </summary>
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protected void ResetRequestFiled()
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{
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// 重置变量
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_isAbort = false;
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_latestDownloadBytes = 0;
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_latestDownloadRealtime = Time.realtimeSinceStartup;
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DownloadProgress = 0f;
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DownloadedBytes = 0;
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// 重置计时器
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if (_tryAgainTimer > 0f)
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YooLogger.Warning($"Try again download : {_requestURL}");
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_tryAgainTimer = 0f;
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}
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/// <summary>
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/// 检测请求超时
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/// </summary>
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protected void CheckRequestTimeout()
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{
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// 注意:在连续时间段内无新增下载数据及判定为超时
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if (_isAbort == false)
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{
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if (_latestDownloadBytes != DownloadedBytes)
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{
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_latestDownloadBytes = DownloadedBytes;
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_latestDownloadRealtime = UnityEngine.Time.realtimeSinceStartup;
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}
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float offset = UnityEngine.Time.realtimeSinceStartup - _latestDownloadRealtime;
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if (offset > Param.Timeout)
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{
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YooLogger.Warning($"Download request timeout : {_requestURL}");
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if (_webRequest != null)
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_webRequest.Abort();
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_isAbort = true;
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}
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}
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}
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/// <summary>
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/// 检测请求结果
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/// </summary>
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protected bool CheckRequestResult()
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{
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HttpCode = _webRequest.responseCode;
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#if UNITY_2020_3_OR_NEWER
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if (_webRequest.result != UnityWebRequest.Result.Success)
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{
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Error = _webRequest.error;
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return false;
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}
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else
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{
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return true;
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}
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#else
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if (_webRequest.isNetworkError || _webRequest.isHttpError)
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{
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Error = _webRequest.error;
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return false;
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}
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else
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{
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return true;
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}
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#endif
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}
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}
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}
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@@ -0,0 +1,11 @@
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fileFormatVersion: 2
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guid: af07b7cdf729e944dbb6d60204c71235
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MonoImporter:
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externalObjects: {}
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serializedVersion: 2
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defaultReferences: []
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executionOrder: 0
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icon: {instanceID: 0}
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userData:
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assetBundleName:
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assetBundleVariant:
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@@ -0,0 +1,148 @@
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using UnityEngine;
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using UnityEngine.Networking;
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namespace YooAsset
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{
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internal class DownloadHandlerAssetBundleOperation : DefaultDownloadFileOperation
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{
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private readonly bool _disableUnityWebCache;
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private DownloadHandlerAssetBundle _downloadhandler;
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private ESteps _steps = ESteps.None;
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public AssetBundle Result { private set; get; }
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internal DownloadHandlerAssetBundleOperation(bool disableUnityWebCache, PackageBundle bundle, DownloadParam param) : base(bundle, param)
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{
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_disableUnityWebCache = disableUnityWebCache;
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}
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internal override void InternalOnStart()
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{
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_steps = ESteps.CreateRequest;
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}
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internal override void InternalOnUpdate()
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{
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if (_steps == ESteps.None || _steps == ESteps.Done)
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return;
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// 创建下载器
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if (_steps == ESteps.CreateRequest)
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{
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// 获取请求地址
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_requestURL = GetRequestURL();
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// 重置变量
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ResetRequestFiled();
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// 创建下载器
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CreateWebRequest();
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_steps = ESteps.CheckRequest;
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}
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// 检测下载结果
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if (_steps == ESteps.CheckRequest)
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{
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DownloadProgress = _webRequest.downloadProgress;
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DownloadedBytes = (long)_webRequest.downloadedBytes;
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Progress = DownloadProgress;
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if (_webRequest.isDone == false)
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{
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CheckRequestTimeout();
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return;
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}
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// 检查网络错误
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if (CheckRequestResult())
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{
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var assetBundle = _downloadhandler.assetBundle;
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if (assetBundle == null)
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{
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_steps = ESteps.Done;
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Error = "Download handler asset bundle object is null !";
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Status = EOperationStatus.Failed;
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}
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else
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{
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_steps = ESteps.Done;
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Result = assetBundle;
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Status = EOperationStatus.Succeed;
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}
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}
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else
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{
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_steps = ESteps.TryAgain;
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}
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// 注意:最终释放请求器
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DisposeWebRequest();
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}
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// 重新尝试下载
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if (_steps == ESteps.TryAgain)
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{
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if (FailedTryAgain <= 0)
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{
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Status = EOperationStatus.Failed;
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_steps = ESteps.Done;
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YooLogger.Error(Error);
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return;
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}
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_tryAgainTimer += Time.unscaledDeltaTime;
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if (_tryAgainTimer > 1f)
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{
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FailedTryAgain--;
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_steps = ESteps.CreateRequest;
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YooLogger.Warning(Error);
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}
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}
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}
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internal override void InternalOnAbort()
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{
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_steps = ESteps.Done;
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DisposeWebRequest();
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}
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private void CreateWebRequest()
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{
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_downloadhandler = CreateDownloadHandler();
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_webRequest = DownloadSystemHelper.NewUnityWebRequestGet(_requestURL);
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_webRequest.downloadHandler = _downloadhandler;
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_webRequest.disposeDownloadHandlerOnDispose = true;
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_webRequest.SendWebRequest();
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}
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private void DisposeWebRequest()
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{
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if (_webRequest != null)
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{
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//注意:引擎底层会自动调用Abort方法
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_webRequest.Dispose();
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_webRequest = null;
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}
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}
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private DownloadHandlerAssetBundle CreateDownloadHandler()
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{
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if (_disableUnityWebCache)
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{
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var downloadhandler = new DownloadHandlerAssetBundle(_requestURL, 0);
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#if UNITY_2020_3_OR_NEWER
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downloadhandler.autoLoadAssetBundle = false;
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#endif
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return downloadhandler;
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}
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else
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{
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// 注意:优先从浏览器缓存里获取文件
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// The file hash defining the version of the asset bundle.
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uint unityCRC = Bundle.UnityCRC;
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Hash128 fileHash = Hash128.Parse(Bundle.FileHash);
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var downloadhandler = new DownloadHandlerAssetBundle(_requestURL, fileHash, unityCRC);
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#if UNITY_2020_3_OR_NEWER
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downloadhandler.autoLoadAssetBundle = false;
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#endif
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return downloadhandler;
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}
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}
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}
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}
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@@ -0,0 +1,11 @@
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fileFormatVersion: 2
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guid: 3b82b4b846083d34b958320b584d8d9b
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MonoImporter:
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externalObjects: {}
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serializedVersion: 2
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defaultReferences: []
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executionOrder: 0
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icon: {instanceID: 0}
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userData:
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assetBundleName:
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assetBundleVariant:
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