MovieSceneCustomPrimitiveDataSystem.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "EntitySystem/MovieSceneEntitySystem.h"
#include "EntitySystem/MovieSceneOverlappingEntityTracker.h"
#include "Evaluation/PreAnimatedState/MovieScenePreAnimatedStateStorage.h"
#include "EntitySystem/BuiltInComponentTypes.h"
 
#include "MovieSceneCustomPrimitiveDataSystem.generated.h"
 
class UMovieSceneBlenderSystem;
class UMovieScenePiecewiseDoubleBlenderSystem;
 
namespace UE::MovieScene
{
 
struct FPreAnimatedCustomPrimitiveDataEntryStorage;
 
struct FAnimatedCustomPrimitiveDataInfo
{
    TWeakObjectPtr<UMovieSceneEntitySystemLinker> WeakLinker;
    TWeakObjectPtr<UMovieSceneBlenderSystem> WeakBlenderSystem;
    int32 NumContributors = 0;
    FMovieSceneEntityID OutputEntityID;
    FMovieSceneBlendChannelID BlendChannelID;
 
    ~FAnimatedCustomPrimitiveDataInfo();
};
 
MOVIESCENETRACKS_API void CollectGarbageForOutput(FAnimatedCustomPrimitiveDataInfo* Output);
 
} // namespace UE::MovieScene
 
 
UCLASS(MinimalAPI)
class UMovieSceneCustomPrimitiveDataSystem
    : public UMovieSceneEntitySystem
{
public:
 
    GENERATED_BODY()
 
    UMovieSceneCustomPrimitiveDataSystem(const FObjectInitializer& ObjInit);
 
private:
 
    virtual void OnLink() override;
    virtual void OnUnlink() override;
    virtual void OnSchedulePersistentTasks(UE::MovieScene::IEntitySystemScheduler* TaskScheduler) override;
    virtual void OnRun(FSystemTaskPrerequisites& InPrerequisites, FSystemSubsequentTasks& Subsequents) override;
 
    void OnInstantiation();
    void OnEvaluation(FSystemTaskPrerequisites& InPrerequisites, FSystemSubsequentTasks& Subsequents);
 
private:
 
    UE::MovieScene::TOverlappingEntityTracker<UE::MovieScene::FAnimatedCustomPrimitiveDataInfo, FObjectKey, FName> ScalarParameterTracker;
 
    TSharedPtr<UE::MovieScene::FPreAnimatedCustomPrimitiveDataEntryStorage> ScalarParameterStorage;
 
    UE::MovieScene::FEntityGroupingPolicyKey GroupingKey;
 
public:
 
    UPROPERTY()
    TObjectPtr<UMovieScenePiecewiseDoubleBlenderSystem> DoubleBlenderSystem;
};