ConstraintChannel.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Channels/MovieSceneBoolChannel.h"
#include "Channels/MovieSceneChannelEditorData.h"
#include "Channels/MovieSceneChannelTraits.h"
#include "ConstraintsManager.h"
#include "Containers/UnrealString.h"
#include "Misc/FrameTime.h"
#include "MovieSceneClipboard.h"
#include "Templates/Function.h"
#include "UObject/Class.h"
#include "UObject/ObjectMacros.h"
#include "UObject/ObjectPtr.h"
#include "UObject/SoftObjectPath.h"
#include "UObject/SoftObjectPtr.h"
 
#include "ConstraintChannel.generated.h"
 
USTRUCT()
struct FMovieSceneConstraintChannel : public FMovieSceneBoolChannel
{
    GENERATED_BODY()
 
    FMovieSceneConstraintChannel() {};
 
    virtual TMovieSceneChannelData<bool> GetData() override
    {
        return TMovieSceneChannelData<bool>(&Times, &Values, this, &KeyHandles);
    }
 
    virtual TMovieSceneChannelData<const bool> GetData() const override
    {
        return FMovieSceneBoolChannel::GetData();
    }
    
    CONSTRAINTS_API virtual bool Evaluate(FFrameTime InTime, bool& OutValue) const override;
 
    CONSTRAINTS_API bool IsInfinite() const;
    
#if WITH_EDITOR
    using ExtraLabelFunction = TFunction< FString() >;
    ExtraLabelFunction ExtraLabel;
#endif
};
 
template<>
struct TStructOpsTypeTraits<FMovieSceneConstraintChannel> : public TStructOpsTypeTraitsBase2<FMovieSceneConstraintChannel>
{
    enum { WithStructuredSerializeFromMismatchedTag = true };
};
 
 
template<>
struct TMovieSceneChannelTraits<FMovieSceneConstraintChannel> : TMovieSceneChannelTraitsBase<FMovieSceneConstraintChannel>
{
    enum { SupportsDefaults = false };
 
#if WITH_EDITOR
 
    typedef TMovieSceneExternalValue<bool> ExtendedEditorDataType;
 
#endif
};
 
// #if WITH_EDITOR
// namespace MovieSceneClipboard
// {
//  template<> inline FName GetKeyTypeName<bool>()
//  {
//      static FName Name("Bool");
//      return Name;
//  }
// }
// #endif
 
 
USTRUCT()
struct FConstraintAndActiveChannel
{
    GENERATED_USTRUCT_BODY()
 
    FConstraintAndActiveChannel() {}
    FConstraintAndActiveChannel(const TObjectPtr<UTickableConstraint>& InConstraint)
        : ConstraintCopyToSpawn(InConstraint)
    {};
    TObjectPtr<UTickableConstraint> GetConstraint() const { return ConstraintCopyToSpawn; }
    void SetConstraint(UTickableConstraint* InConstraint) { ConstraintCopyToSpawn = InConstraint; }
 
    UPROPERTY()
    FMovieSceneConstraintChannel ActiveChannel;
 
private:
    UPROPERTY()
    TObjectPtr<UTickableConstraint> ConstraintCopyToSpawn;
};