100 lines
2.0 KiB
C#
100 lines
2.0 KiB
C#
using UnityEngine;
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using UnityEngine.SceneManagement;
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namespace YooAsset
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{
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/// <summary>
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/// 场景卸载异步操作类
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/// </summary>
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public sealed class UnloadSceneOperation : 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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CheckError,
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PrepareDone,
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UnLoadScene,
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Checking,
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Done,
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}
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private ESteps _steps = ESteps.None;
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private readonly string _error;
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private readonly ProviderBase _provider;
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private AsyncOperation _asyncOp;
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internal UnloadSceneOperation(string error)
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{
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_error = error;
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}
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internal UnloadSceneOperation(ProviderBase provider)
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{
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_error = null;
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_provider = provider;
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}
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internal override void InternalOnStart()
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{
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_steps = ESteps.CheckError;
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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.CheckError)
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{
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if (string.IsNullOrEmpty(_error) == false)
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{
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_steps = ESteps.Done;
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Status = EOperationStatus.Failed;
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Error = _error;
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return;
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}
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_steps = ESteps.PrepareDone;
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}
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if(_steps == ESteps.PrepareDone)
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{
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if (_provider.IsDone == false)
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return;
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if (_provider.SceneObject.IsValid() == false)
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{
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_steps = ESteps.Done;
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Status = EOperationStatus.Failed;
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Error = "Scene is invalid !";
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return;
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}
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if (_provider.SceneObject.isLoaded == false)
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{
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_steps = ESteps.Done;
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Status = EOperationStatus.Failed;
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Error = "Scene is not loaded !";
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return;
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}
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_steps = ESteps.UnLoadScene;
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}
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if (_steps == ESteps.UnLoadScene)
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{
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_asyncOp = SceneManager.UnloadSceneAsync(_provider.SceneObject);
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_provider.ResourceMgr.UnloadSubScene(_provider.SceneName);
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_provider.ResourceMgr.TryUnloadUnusedAsset(_provider.MainAssetInfo);
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_steps = ESteps.Checking;
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}
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if (_steps == ESteps.Checking)
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{
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Progress = _asyncOp.progress;
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if (_asyncOp.isDone == false)
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return;
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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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}
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} |