114 lines
3.8 KiB
C#
114 lines
3.8 KiB
C#
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using UnityEngine;
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namespace YooAsset
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{
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internal class LoadWebNormalAssetBundleOperation : LoadWebAssetBundleOperation
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{
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protected enum ESteps
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{
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None,
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CreateRequest,
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CheckRequest,
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TryAgain,
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Done,
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}
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private readonly PackageBundle _bundle;
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private readonly DownloadFileOptions _options;
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private readonly bool _disableUnityWebCache;
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private UnityAssetBundleRequestOperation _unityAssetBundleRequestOp;
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protected int _requestCount = 0;
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protected float _tryAgainTimer;
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protected int _failedTryAgain;
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private ESteps _steps = ESteps.None;
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internal LoadWebNormalAssetBundleOperation(PackageBundle bundle, DownloadFileOptions options, bool disableUnityWebCache)
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{
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_bundle = bundle;
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_options = options;
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_disableUnityWebCache = disableUnityWebCache;
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}
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internal override void InternalStart()
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{
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_steps = ESteps.CreateRequest;
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}
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internal override void InternalUpdate()
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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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string url = GetRequestURL();
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_unityAssetBundleRequestOp = new UnityAssetBundleRequestOperation(_bundle, _disableUnityWebCache, url);
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_unityAssetBundleRequestOp.StartOperation();
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AddChildOperation(_unityAssetBundleRequestOp);
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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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_unityAssetBundleRequestOp.UpdateOperation();
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Progress = _unityAssetBundleRequestOp.Progress;
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DownloadedBytes = _unityAssetBundleRequestOp.DownloadedBytes;
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DownloadProgress = _unityAssetBundleRequestOp.DownloadProgress;
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if (_unityAssetBundleRequestOp.IsDone == false)
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return;
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if (_unityAssetBundleRequestOp.Status == EOperationStatus.Succeed)
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{
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_steps = ESteps.Done;
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Status = EOperationStatus.Succeed;
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Result = _unityAssetBundleRequestOp.Result;
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}
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else
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{
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if (_failedTryAgain > 0)
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{
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_steps = ESteps.TryAgain;
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YooLogger.Warning($"Failed download : {_unityAssetBundleRequestOp.URL} Try again !");
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}
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else
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{
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_steps = ESteps.Done;
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Status = EOperationStatus.Failed;
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Error = _unityAssetBundleRequestOp.Error;
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YooLogger.Error(Error);
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}
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}
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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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_tryAgainTimer += Time.unscaledDeltaTime;
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if (_tryAgainTimer > 1f)
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{
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_tryAgainTimer = 0f;
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_failedTryAgain--;
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Progress = 0f;
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DownloadProgress = 0f;
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DownloadedBytes = 0;
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_steps = ESteps.CreateRequest;
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}
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}
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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 _options.FallbackURL;
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else
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return _options.MainURL;
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}
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}
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}
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