MovieSceneDeferredComponentMovementSystem.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "EntitySystem/MovieSceneEntitySystem.h"
#include "Containers/ChunkedArray.h"
#include "Misc/Optional.h"
#include "Engine/ScopedMovementUpdate.h"
#include "MovieSceneDeferredComponentMovementSystem.generated.h"
 
class USceneComponent;
 
UCLASS(MinimalAPI)
class UMovieSceneDeferredComponentMovementSystem
    : public UMovieSceneEntitySystem
{
public:
 
    GENERATED_BODY()
 
    UMovieSceneDeferredComponentMovementSystem(const FObjectInitializer& ObjInit);
 
    MOVIESCENETRACKS_API void DeferMovementUpdates(USceneComponent* InComponent);
 
private:
 
    virtual void BeginDestroy() override;
 
    virtual bool IsRelevantImpl(UMovieSceneEntitySystemLinker* InLinker) const override;
    virtual void OnSchedulePersistentTasks(UE::MovieScene::IEntitySystemScheduler* TaskScheduler) override;
    virtual void OnRun(FSystemTaskPrerequisites& InPrerequisites, FSystemSubsequentTasks& Subsequents) override;
    virtual void OnUnlink() override final;
 
    void ApplyMovementUpdates();
 
    void OutputDeferredMovements();
 
    void EnsureMovementsFlushed();
 
    struct FScopedSequencerMovementUpdate : FScopedMovementUpdate
    {
        FScopedSequencerMovementUpdate(USceneComponent* Component) : FScopedMovementUpdate(Component) {}
 
        void operator=(const FScopedSequencerMovementUpdate&) = delete;
        FScopedSequencerMovementUpdate(const FScopedSequencerMovementUpdate&) = delete;
 
        void operator=(FScopedSequencerMovementUpdate&&) = delete;
        FScopedSequencerMovementUpdate(FScopedSequencerMovementUpdate&&) = delete;
 
        USceneComponent* GetComponent() const;
    };
 
    struct FScopedMovementUpdateContainer
    {
        FScopedMovementUpdateContainer(USceneComponent* Component) : Value(Component) {}
 
        FScopedSequencerMovementUpdate Value;
    };
 
    TChunkedArray<TOptional<FScopedMovementUpdateContainer>, 8192> ScopedUpdates;
};