58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "Templates/SharedPointer.h"
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#include "UObject/ObjectKey.h"
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#include "Containers/Map.h"
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#include "EntitySystem/MovieSceneEntitySystem.h"
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#include "EntitySystem/MovieSceneCachedEntityFilterResult.h"
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#include "MovieSceneDataLayerSystem.generated.h"
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class UDataLayerManager;
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namespace UE
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{
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namespace MovieScene
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{
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struct FDesiredLayerStates;
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struct FPreAnimatedDataLayerStorage;
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} // namespace MovieScene
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} // namespace UE
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/**
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* System that applies all data layer changes to the world
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*/
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UCLASS(MinimalAPI)
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class UMovieSceneDataLayerSystem
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: public UMovieSceneEntitySystem
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{
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public:
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GENERATED_BODY()
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UMovieSceneDataLayerSystem(const FObjectInitializer& ObjInit);
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private:
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virtual bool IsRelevantImpl(UMovieSceneEntitySystemLinker* InLinker) const override;
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virtual void OnLink() override;
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virtual void OnRun(FSystemTaskPrerequisites& InPrerequisites, FSystemSubsequentTasks& Subsequents) override final;
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UDataLayerManager* GetDataLayerManager(UE::MovieScene::FMovieSceneEntityID EntityID, UE::MovieScene::FRootInstanceHandle RootInstance);
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void UpdateDesiredStates();
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void BeginTrackingEntities();
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private:
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/** Cached filter that tells us whether we need to run this frame */
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UE::MovieScene::FCachedEntityFilterResult_Match ApplicableFilter;
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/** Impl class that stores the desired layer states for the current (and last) frame */
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TSharedPtr<UE::MovieScene::FDesiredLayerStates> DesiredLayerStates;
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/** Weak ptr to the pre-animated storage if we need to cache previous states for layers */
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TWeakPtr<UE::MovieScene::FPreAnimatedDataLayerStorage> WeakPreAnimatedStorage;
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};
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