[UE5] Animation Basic

Animation Blueprint는 AnimInstance를 상속받은 블루프린트 클래스이다

• AnimInstance를 상속받은 C++ 클래스 생성
  

    // header
    public:
    	URAnimInstance(const FObjectInitializer& ObjectInitializer = FObjectInitializer::Get());
    
    public:
    	virtual void NativeInitializeAnimation() override;
    	virtual void NativeUpdateAnimation(float DeltaSeconds) override;
    	
    protected:
    	UPROPERTY(BlueprintReadOnly)
    	TObjectPtr<class ARPlayer> Character;
    
    	UPROPERTY(BlueprintReadOnly)
    	TObjectPtr<class UCharacterMovementComponent> MovementComponent;
    
    protected:
    	UPROPERTY(BlueprintReadOnly)
    	FVector Velocity = FVector::ZeroVector;
    
    	UPROPERTY(BlueprintReadOnly)
    	float GroundSpeed = 0.f;
    
    	UPROPERTY(BlueprintReadOnly)
    	bool bShouldMove = false;
    	
    	UPROPERTY(BlueprintReadOnly)
    	bool bIsFalling = false;

    // cpp
    void URAnimInstance::NativeInitializeAnimation()
    {
    	Super::NativeInitializeAnimation();
    
    	Character = Cast<ARPlayer>(TryGetPawnOwner());
    	if(Character)
    	{
    		MovementComponent = Character->GetCharacterMovement();
    	}
    }
    
    void URAnimInstance::NativeUpdateAnimation(float DeltaSeconds)
    {
    	Super::NativeUpdateAnimation(DeltaSeconds);
    
    	if(Character==nullptr)
    		return;
    
    	if(MovementComponent==nullptr)
    		return;
    
    	Velocity = MovementComponent->Velocity;
    	GroundSpeed = Velocity.Size2D();
    
    	bShouldMove = (GroundSpeed > 3.f && MovementComponent->GetCurrentAcceleration() != FVector::ZeroVector);
    	bIsFalling = MovementComponent->IsFalling();
    	
    }
    

• NativeInitializeAnimation: BeginPlay처럼 딱 한 번 초기화하는 함수
• NativeUpdateAnimation: Tick처럼 매 프레임마다 실행하는 함수
• ABP_Manny의 블루프린트를 참고하여 그대로 만들어주면 된다