369 lines
10 KiB
C#
369 lines
10 KiB
C#
using System;
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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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using UnityEngine.SceneManagement;
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namespace YooAsset
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{
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internal class AssetSystemImpl
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{
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private static string SceneRunningPackage = string.Empty;
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private readonly List<AssetBundleLoaderBase> _loaders = new List<AssetBundleLoaderBase>(1000);
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private readonly List<ProviderBase> _providers = new List<ProviderBase>(1000);
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private readonly Dictionary<string, SceneOperationHandle> _sceneHandles = new Dictionary<string, SceneOperationHandle>(100);
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private long _sceneCreateCount = 0;
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private bool _simulationOnEditor;
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private int _loadingMaxNumber;
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public IDecryptionServices DecryptionServices { private set; get; }
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public IBundleServices BundleServices { private set; get; }
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/// <summary>
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/// 初始化
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/// 注意：在使用AssetSystem之前需要初始化
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/// </summary>
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public void Initialize(bool simulationOnEditor, int loadingMaxNumber, IDecryptionServices decryptionServices, IBundleServices bundleServices)
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{
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_simulationOnEditor = simulationOnEditor;
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_loadingMaxNumber = loadingMaxNumber;
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DecryptionServices = decryptionServices;
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BundleServices = bundleServices;
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}
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/// <summary>
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/// 更新
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/// </summary>
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public void Update()
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{
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// 更新加载器
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foreach (var loader in _loaders)
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{
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loader.Update();
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}
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// 更新资源提供者
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// 注意：循环更新的时候，可能会扩展列表
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// 注意：不能限制场景对象的加载
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int loadingCount = 0;
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for (int i = 0; i < _providers.Count; i++)
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{
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var provider = _providers[i];
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if (provider.IsSceneProvider())
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{
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provider.Update();
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}
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else
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{
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if (loadingCount < _loadingMaxNumber)
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provider.Update();
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if (provider.IsDone == false)
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loadingCount++;
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}
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}
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}
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/// <summary>
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/// 销毁
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/// </summary>
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public void DestroyAll()
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{
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_loaders.Clear();
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_providers.Clear();
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_sceneHandles.Clear();
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DecryptionServices = null;
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BundleServices = null;
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}
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/// <summary>
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/// 资源回收（卸载引用计数为零的资源）
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/// </summary>
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public void UnloadUnusedAssets()
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{
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if (_simulationOnEditor)
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{
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for (int i = _providers.Count - 1; i >= 0; i--)
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{
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if (_providers[i].CanDestroy())
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{
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_providers[i].Destroy();
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_providers.RemoveAt(i);
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}
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}
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}
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else
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{
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for (int i = _loaders.Count - 1; i >= 0; i--)
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{
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AssetBundleLoaderBase loader = _loaders[i];
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loader.TryDestroyAllProviders();
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}
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for (int i = _loaders.Count - 1; i >= 0; i--)
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{
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AssetBundleLoaderBase loader = _loaders[i];
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if (loader.CanDestroy())
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{
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loader.Destroy(false);
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_loaders.RemoveAt(i);
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}
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}
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}
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}
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/// <summary>
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/// 强制回收所有资源
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/// </summary>
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public void ForceUnloadAllAssets()
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{
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foreach (var provider in _providers)
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{
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provider.Destroy();
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}
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_providers.Clear();
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foreach (var loader in _loaders)
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{
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loader.Destroy(true);
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}
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_loaders.Clear();
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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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}
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/// <summary>
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/// 加载场景
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/// </summary>
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public SceneOperationHandle LoadSceneAsync(AssetInfo assetInfo, LoadSceneMode sceneMode, bool activateOnLoad, int priority)
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{
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if (assetInfo.IsInvalid)
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{
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CompletedProvider completedProvider = new CompletedProvider(assetInfo);
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completedProvider.SetCompleted(assetInfo.Error);
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return completedProvider.CreateHandle<SceneOperationHandle>();
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}
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// 注意：场景只允许运行在一个资源包内
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if (string.IsNullOrEmpty(SceneRunningPackage))
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{
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SceneRunningPackage = BundleServices.GetPackageName();
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}
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if (BundleServices.GetPackageName() != SceneRunningPackage)
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{
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CompletedProvider completedProvider = new CompletedProvider(assetInfo);
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string error = $"Scene are allowed to running within only {SceneRunningPackage}";
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completedProvider.SetCompleted(error);
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return completedProvider.CreateHandle<SceneOperationHandle>();
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}
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// 如果加载的是主场景，则卸载所有缓存的场景
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if (sceneMode == LoadSceneMode.Single)
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{
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UnloadAllScene();
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}
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// 注意：同一个场景的ProviderGUID每次加载都会变化
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string providerGUID = $"{assetInfo.GUID}-{++_sceneCreateCount}";
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ProviderBase provider;
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{
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if (_simulationOnEditor)
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provider = new DatabaseSceneProvider(this, providerGUID, assetInfo, sceneMode, activateOnLoad, priority);
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else
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provider = new BundledSceneProvider(this, providerGUID, assetInfo, sceneMode, activateOnLoad, priority);
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provider.InitSpawnDebugInfo();
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_providers.Add(provider);
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}
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var handle = provider.CreateHandle<SceneOperationHandle>();
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_sceneHandles.Add(providerGUID, handle);
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return handle;
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}
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/// <summary>
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/// 加载资源对象
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/// </summary>
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public AssetOperationHandle LoadAssetAsync(AssetInfo assetInfo)
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{
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if (assetInfo.IsInvalid)
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{
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CompletedProvider completedProvider = new CompletedProvider(assetInfo);
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completedProvider.SetCompleted(assetInfo.Error);
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return completedProvider.CreateHandle<AssetOperationHandle>();
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}
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string providerGUID = assetInfo.GUID;
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ProviderBase provider = TryGetProvider(providerGUID);
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if (provider == null)
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{
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if (_simulationOnEditor)
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provider = new DatabaseAssetProvider(this, providerGUID, assetInfo);
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else
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provider = new BundledAssetProvider(this, providerGUID, assetInfo);
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provider.InitSpawnDebugInfo();
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_providers.Add(provider);
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}
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return provider.CreateHandle<AssetOperationHandle>();
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}
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/// <summary>
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/// 加载子资源对象
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/// </summary>
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public SubAssetsOperationHandle LoadSubAssetsAsync(AssetInfo assetInfo)
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{
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if (assetInfo.IsInvalid)
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{
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CompletedProvider completedProvider = new CompletedProvider(assetInfo);
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completedProvider.SetCompleted(assetInfo.Error);
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return completedProvider.CreateHandle<SubAssetsOperationHandle>();
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}
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string providerGUID = assetInfo.GUID;
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ProviderBase provider = TryGetProvider(providerGUID);
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if (provider == null)
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{
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if (_simulationOnEditor)
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provider = new DatabaseSubAssetsProvider(this, providerGUID, assetInfo);
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else
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provider = new BundledSubAssetsProvider(this, providerGUID, assetInfo);
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provider.InitSpawnDebugInfo();
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_providers.Add(provider);
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}
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return provider.CreateHandle<SubAssetsOperationHandle>();
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}
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internal void UnloadSubScene(ProviderBase provider)
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{
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string providerGUID = provider.ProviderGUID;
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if (_sceneHandles.ContainsKey(providerGUID) == false)
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throw new Exception("Should never get here !");
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// 释放子场景句柄
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_sceneHandles[providerGUID].ReleaseInternal();
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_sceneHandles.Remove(providerGUID);
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// 卸载未被使用的资源（包括场景）
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UnloadUnusedAssets();
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}
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internal void UnloadAllScene()
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{
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// 释放所有场景句柄
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foreach (var valuePair in _sceneHandles)
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{
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valuePair.Value.ReleaseInternal();
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}
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_sceneHandles.Clear();
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// 卸载未被使用的资源（包括场景）
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UnloadUnusedAssets();
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}
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internal AssetBundleLoaderBase CreateOwnerAssetBundleLoader(AssetInfo assetInfo)
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{
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BundleInfo bundleInfo = BundleServices.GetBundleInfo(assetInfo);
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return CreateAssetBundleLoaderInternal(bundleInfo);
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}
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internal List<AssetBundleLoaderBase> CreateDependAssetBundleLoaders(AssetInfo assetInfo)
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{
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BundleInfo[] depends = BundleServices.GetAllDependBundleInfos(assetInfo);
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List<AssetBundleLoaderBase> result = new List<AssetBundleLoaderBase>(depends.Length);
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foreach (var bundleInfo in depends)
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{
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AssetBundleLoaderBase dependLoader = CreateAssetBundleLoaderInternal(bundleInfo);
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result.Add(dependLoader);
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}
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return result;
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}
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internal void RemoveBundleProviders(List<ProviderBase> providers)
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{
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foreach (var provider in providers)
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{
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_providers.Remove(provider);
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}
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}
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private AssetBundleLoaderBase CreateAssetBundleLoaderInternal(BundleInfo bundleInfo)
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{
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// 如果加载器已经存在
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AssetBundleLoaderBase loader = TryGetAssetBundleLoader(bundleInfo.Bundle.BundleName);
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if (loader != null)
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return loader;
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// 新增下载需求
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#if UNITY_WEBGL
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loader = new AssetBundleWebLoader(this, bundleInfo);
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#else
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loader = new AssetBundleFileLoader(this, bundleInfo);
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#endif
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_loaders.Add(loader);
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return loader;
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}
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private AssetBundleLoaderBase TryGetAssetBundleLoader(string bundleName)
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{
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AssetBundleLoaderBase loader = null;
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for (int i = 0; i < _loaders.Count; i++)
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{
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AssetBundleLoaderBase temp = _loaders[i];
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if (temp.MainBundleInfo.Bundle.BundleName.Equals(bundleName))
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{
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loader = temp;
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break;
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}
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}
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return loader;
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}
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private ProviderBase TryGetProvider(string providerGUID)
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{
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ProviderBase provider = null;
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for (int i = 0; i < _providers.Count; i++)
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{
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ProviderBase temp = _providers[i];
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if (temp.ProviderGUID.Equals(providerGUID))
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{
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provider = temp;
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break;
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}
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}
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return provider;
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}
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#region 调试信息
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internal List<DebugProviderInfo> GetDebugReportInfos()
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{
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List<DebugProviderInfo> result = new List<DebugProviderInfo>(_providers.Count);
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foreach (var provider in _providers)
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{
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DebugProviderInfo providerInfo = new DebugProviderInfo();
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providerInfo.PackageName = BundleServices.GetPackageName();
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providerInfo.AssetPath = provider.MainAssetInfo.AssetPath;
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providerInfo.SpawnScene = provider.SpawnScene;
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providerInfo.SpawnTime = provider.SpawnTime;
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providerInfo.RefCount = provider.RefCount;
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providerInfo.Status = (int)provider.Status;
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providerInfo.DependBundleInfos = new List<DebugBundleInfo>();
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result.Add(providerInfo);
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if (provider is BundledProvider)
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{
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BundledProvider temp = provider as BundledProvider;
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temp.GetBundleDebugInfos(providerInfo.DependBundleInfos);
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}
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}
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return result;
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}
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internal List<BundleInfo> GetLoadedBundleInfos()
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{
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List<BundleInfo> result = new List<BundleInfo>(100);
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foreach (var bundleLoader in _loaders)
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{
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result.Add(bundleLoader.MainBundleInfo);
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}
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return result;
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}
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#endregion
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}
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} |