MovieSceneParticleSection.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Channels/MovieSceneByteChannel.h"
#include "Channels/MovieSceneChannelData.h"
#include "Channels/MovieSceneChannelEditorData.h"
#include "Channels/MovieSceneChannelTraits.h"
#include "Containers/ArrayView.h"
#include "CoreMinimal.h"
#include "CoreTypes.h"
#include "Curves/KeyHandle.h"
#include "Misc/FrameTime.h"
#include "MovieSceneSection.h"
#include "Templates/UnrealTemplate.h"
#include "UObject/Class.h"
#include "UObject/ObjectMacros.h"
#include "UObject/UObjectGlobals.h"
 
#include "MovieSceneParticleSection.generated.h"
 
class UObject;
 
UENUM(BlueprintType)
enum class EParticleKey : uint8
{
    Activate   = 0,
    Deactivate = 1,
    Trigger    = 2,
};
 
USTRUCT()
struct FMovieSceneParticleChannel : public FMovieSceneByteChannel
{
    GENERATED_BODY()
 
    MOVIESCENETRACKS_API FMovieSceneParticleChannel();
};
 
template<>
struct TStructOpsTypeTraits<FMovieSceneParticleChannel> : public TStructOpsTypeTraitsBase2<FMovieSceneParticleChannel>
{
    enum { WithStructuredSerializeFromMismatchedTag = true };
};
 
 
template<>
struct TMovieSceneChannelTraits<FMovieSceneParticleChannel> : TMovieSceneChannelTraitsBase<FMovieSceneParticleChannel>
{
    enum { SupportsDefaults = false };
 
#if WITH_EDITOR
 
    typedef TMovieSceneExternalValue<uint8> ExtendedEditorDataType;
 
#endif
};
 
UCLASS(MinimalAPI)
class UMovieSceneParticleSection
    : public UMovieSceneSection
{
    GENERATED_UCLASS_BODY()
 
public:
 
    UPROPERTY()
    FMovieSceneParticleChannel ParticleKeys;
};
 
 
inline void AssignValue(FMovieSceneParticleChannel* InChannel, FKeyHandle InKeyHandle, EParticleKey InValue)
{
    TMovieSceneChannelData<uint8> ChannelData = InChannel->GetData();
    int32 ValueIndex = ChannelData.GetIndex(InKeyHandle);
 
    if (ValueIndex != INDEX_NONE)
    {
        ChannelData.GetValues()[ValueIndex] = (uint8)InValue;
    }
}
 
inline bool EvaluateChannel(const FMovieSceneParticleChannel* InChannel, FFrameTime InTime, EParticleKey& OutValue)
{
    uint8 RawValue = 0;
    if (InChannel->Evaluate(InTime, RawValue))
    {
        OutValue = (EParticleKey)RawValue;
        return true;
    }
    return false;
}