126 lines
4.4 KiB
C#
126 lines
4.4 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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namespace YooAsset
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{
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public sealed class PreDownloadContentOperation : AsyncOperationBase
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{
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private enum ESteps
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{
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None,
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CheckParams,
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CheckActiveManifest,
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LoadPackageManifest,
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Done,
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}
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private readonly FileSystemHost _host;
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private readonly PreDownloadContentOptions _options;
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private FSLoadPackageManifestOperation _loadPackageManifestOp;
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private PackageManifest _manifest;
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private ESteps _steps = ESteps.None;
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internal PreDownloadContentOperation(FileSystemHost host, PreDownloadContentOptions options)
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{
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_host = host;
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_options = options;
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}
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internal override void InternalStart()
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{
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_steps = ESteps.CheckParams;
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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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if (_steps == ESteps.CheckParams)
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{
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if (string.IsNullOrEmpty(_options.PackageVersion))
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{
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_steps = ESteps.Done;
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Status = EOperationStatus.Failed;
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Error = "Package version is null or empty.";
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return;
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}
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_steps = ESteps.CheckActiveManifest;
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}
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if (_steps == ESteps.CheckActiveManifest)
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{
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// 检测当前激活的清单对象
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if (_host.ActiveManifest != null)
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{
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if (_host.ActiveManifest.PackageVersion == _options.PackageVersion)
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{
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_manifest = _host.ActiveManifest;
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_steps = ESteps.Done;
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Status = EOperationStatus.Succeed;
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return;
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}
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}
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_steps = ESteps.LoadPackageManifest;
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}
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if (_steps == ESteps.LoadPackageManifest)
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{
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if (_loadPackageManifestOp == null)
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{
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var mainFileSystem = _host.GetMainFileSystem();
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var options = new LoadPackageManifestOptions(_options.PackageVersion, _options.Timeout);
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_loadPackageManifestOp = mainFileSystem.LoadPackageManifestAsync(options);
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_loadPackageManifestOp.StartOperation();
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AddChildOperation(_loadPackageManifestOp);
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}
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_loadPackageManifestOp.UpdateOperation();
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if (_loadPackageManifestOp.IsDone == false)
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return;
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if (_loadPackageManifestOp.Status == EOperationStatus.Succeed)
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{
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_manifest = _loadPackageManifestOp.Manifest;
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_steps = ESteps.Done;
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Status = EOperationStatus.Succeed;
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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 = _loadPackageManifestOp.Error;
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}
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}
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}
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/// <summary>
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/// 创建资源下载器，用于下载指定的资源标签列表关联的资源包文件
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/// </summary>
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public ResourceDownloaderOperation CreateResourceDownloader(ResourceDownloaderOptions options)
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{
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if (Status != EOperationStatus.Succeed)
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{
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YooLogger.Error($"{nameof(PreDownloadContentOperation)} status is not succeed.");
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return ResourceDownloaderOperation.CreateEmptyDownloader(_host.PackageName);
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}
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return _host.CreateResourceDownloader(_manifest, options);
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}
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/// <summary>
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/// 创建资源下载器，用于下载指定的资源信息列表依赖的资源包文件
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/// </summary>
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public ResourceDownloaderOperation CreateBundleDownloader(BundleDownloaderOptions options)
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{
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if (Status != EOperationStatus.Succeed)
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{
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YooLogger.Error($"{nameof(PreDownloadContentOperation)} status is not succeed.");
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return ResourceDownloaderOperation.CreateEmptyDownloader(_host.PackageName);
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}
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return _host.CreateResourceDownloader(_manifest, options);
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}
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}
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} |