AnimNode_LinkedAnimLayer.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "Templates/SubclassOf.h"
#include "Animation/AnimCurveTypes.h"
#include "Animation/AnimNode_LinkedAnimGraph.h"
#include "Animation/AnimInstance.h"
#include "Animation/AnimLayerInterface.h"
 
#include "AnimNode_LinkedAnimLayer.generated.h"
 
struct FAnimInstanceProxy;
class UUserDefinedStruct;
struct FAnimBlueprintFunction;
class IAnimClassInterface;
 
USTRUCT(BlueprintInternalUseOnly)
struct FAnimNode_LinkedAnimLayer : public FAnimNode_LinkedAnimGraph
{
    GENERATED_BODY()
 
public:
    UPROPERTY()
    TSubclassOf<UAnimLayerInterface> Interface;
 
    UPROPERTY(EditAnywhere, Category = Settings)
    FName Layer;
 
    ENGINE_API void SetLinkedLayerInstance(const UAnimInstance* InOwningAnimInstance, UAnimInstance* InNewLinkedInstance);
 
    ENGINE_API virtual void OnInitializeAnimInstance(const FAnimInstanceProxy* InProxy, const UAnimInstance* InAnimInstance) override;
    virtual bool NeedsOnInitializeAnimInstance() const override { return true; }
    ENGINE_API void OnUninitializeAnimInstance(UAnimInstance* InAnimInstance);
 
    ENGINE_API virtual void InitializeProperties(const UObject* InSourceInstance, UClass* InTargetClass) override;
    
    ENGINE_API virtual FName GetDynamicLinkFunctionName() const override;
    ENGINE_API virtual UAnimInstance* GetDynamicLinkTarget(UAnimInstance* InOwningAnimInstance) const override;
    virtual UClass* GetTargetClass() const override 
    {
        return *Interface;
    }
 
#if WITH_EDITOR
    // Event fired when the instance we are running has changed
    FSimpleMulticastDelegate& OnInstanceChanged() { return OnInstanceChangedEvent; }
    ENGINE_API virtual void HandleObjectsReinstanced_Impl(UObject* InSourceObject, UObject* InTargetObject, const TMap<UObject*, UObject*>& OldToNewInstanceMap) override;
#endif
 
protected:
    ENGINE_API void InitializeSelfLayer(const UAnimInstance* SelfAnimInstance);
 
    // Initialize the source properties to copy from
    ENGINE_API void InitializeSourceProperties(const UAnimInstance* InAnimInstance);
 
    ENGINE_API virtual bool CanTeardownLinkedInstance(const UAnimInstance* LinkedInstance) const override;
 
    // Cleanup Shared LinkedLayers Data associated with InPreviousTargetInstance
    ENGINE_API void CleanupSharedLinkedLayersData(const UAnimInstance* InOwningAnimInstance, UAnimInstance* InPreviousTargetInstance);
    
#if WITH_EDITOR
    // Event fired when the instance we are running has changed
    FSimpleMulticastDelegate OnInstanceChangedEvent;
#endif
 
    // stats
#if ANIMNODE_STATS_VERBOSE
    ENGINE_API virtual void InitializeStatID() override;
#endif
};
 
UE_DEPRECATED(4.24, "FAnimNode_Layer has been renamed to FAnimNode_LinkedAnimLayer")
typedef FAnimNode_LinkedAnimLayer FAnimNode_Layer;