79 lines
2.3 KiB
C#
79 lines
2.3 KiB
C#
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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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namespace YooAsset
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{
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public sealed class UnloadUnusedAssetsOperation : 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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UnloadUnused,
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Done,
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}
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private readonly ResourceManager _resManager;
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private ESteps _steps = ESteps.None;
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internal UnloadUnusedAssetsOperation(ResourceManager resourceManager)
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{
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_resManager = resourceManager;
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}
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internal override void InternalOnStart()
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{
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_steps = ESteps.UnloadUnused;
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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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if (_steps == ESteps.UnloadUnused)
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{
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var loaderDic = _resManager._loaderDic;
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var removeList = new List<LoadBundleFileOperation>(loaderDic.Count);
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// 注意：优先销毁资源提供者
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foreach (var loader in loaderDic.Values)
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{
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loader.TryDestroyProviders();
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}
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// 获取销毁列表
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foreach (var loader in loaderDic.Values)
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{
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if (loader.CanDestroyLoader())
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{
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removeList.Add(loader);
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}
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}
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// 销毁文件加载器
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foreach (var loader in removeList)
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{
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string bundleName = loader.BundleFileInfo.Bundle.BundleName;
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loader.DestroyLoader();
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_resManager._loaderDic.Remove(bundleName);
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}
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// 注意：调用底层接口释放所有资源
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Resources.UnloadUnusedAssets();
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_steps = ESteps.Done;
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Status = EOperationStatus.Succeed;
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}
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}
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internal override void InternalWaitForAsyncComplete()
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{
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while (true)
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{
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if (ExecuteWhileDone())
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{
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_steps = ESteps.Done;
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break;
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}
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}
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}
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}
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}
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