AnimNode_TransitionPoseEvaluator.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "Animation/AnimCurveTypes.h"
#include "BonePose.h"
#include "Animation/AnimNodeBase.h"
#include "AnimNode_TransitionPoseEvaluator.generated.h"
 
UENUM()
namespace EEvaluatorDataSource
{
    enum Type : int
    {
        EDS_SourcePose UMETA(DisplayName="Source Pose"),
        EDS_DestinationPose UMETA(DisplayName="Destination Pose")
    };
}
 
UENUM()
namespace EEvaluatorMode
{
    enum Mode : int
    {
        EM_Standard UMETA(DisplayName="Standard"),
 
        EM_Freeze UMETA(DisplayName="Freeze"),
 
        EM_DelayedFreeze UMETA(DisplayName="Delayed Freeze")
    };
}
 
 
USTRUCT(BlueprintInternalUseOnly)
struct FAnimNode_TransitionPoseEvaluator : public FAnimNode_Base
{
    GENERATED_USTRUCT_BODY()
 
    FCompactHeapPose CachedPose;
    FBlendedHeapCurve CachedCurve;
    UE::Anim::FHeapAttributeContainer CachedAttributes;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Pose, meta=(NeverAsPin, ClampMin="1", UIMin="1"))
    int32 FramesToCachePose;
 
    int32 CacheFramesRemaining;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Pose, meta=(NeverAsPin))
    TEnumAsByte<EEvaluatorDataSource::Type> DataSource;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Pose, meta=(NeverAsPin))
    TEnumAsByte<EEvaluatorMode::Mode> EvaluatorMode;
 
    FGraphTraversalCounter CachedBonesCounter;
 
public: 
    ENGINE_API FAnimNode_TransitionPoseEvaluator();
    ENGINE_API void SetupCacheFrames();
 
    // FAnimNode_Base interface
    ENGINE_API virtual void Initialize_AnyThread(const FAnimationInitializeContext& Context) override;
    ENGINE_API virtual void CacheBones_AnyThread(const FAnimationCacheBonesContext& Context) override;
    ENGINE_API virtual void Update_AnyThread(const FAnimationUpdateContext& Context) override;
    ENGINE_API virtual void Evaluate_AnyThread(FPoseContext& Output) override;
    ENGINE_API virtual void GatherDebugData(FNodeDebugData& DebugData) override;
    // End of FAnimNode_Base interface
 
    ENGINE_API bool InputNodeNeedsUpdate(const FAnimationUpdateContext& Context) const;
    ENGINE_API bool InputNodeNeedsEvaluate() const;
    ENGINE_API void CachePose(const FPoseContext& PoseToCache);
};