How can I create a TimelineComponent in C++?

Development Programming & Scripting C++
7

Timeline C++ Sample

Here’s what I’ve got, I don’t know about the used in BP part because I don’t use Blueprints much, but this does work in C++:

.h



UCLASS()
class STAINEDGLASS_API ATestTimelineActor : public AStaticMeshActor
{
	GENERATED_BODY()
	
public:	
	ATestTimelineActor(const FObjectInitializer &pInit);
	virtual void BeginPlay() override;
	virtual void Tick( float DeltaSeconds ) override;

	UFUNCTION()
	void ColorInterp(float pValue);

	UPROPERTY(EditAnywhere)
	UCurveFloat *TestFloatCurve;

	FTimeline TestTimeline;
};

.cpp



ATestTimelineActor::ATestTimelineActor(const FObjectInitializer &pInit) : Super(pInit)
{
	PrimaryActorTick.bCanEverTick = true;
	
        //Setup a simple curve
	TestFloatCurve = pInit.CreateDefaultSubobject<UCurveFloat>(this, TEXT("Test Float Curve"));
	TestFloatCurve->FloatCurve.AddKey(0.0f, 0.0f);
	TestFloatCurve->FloatCurve.AddKey(1.0f, 1.0f);

        //Setup the timelinefunction
	FOnTimelineFloat floatStaticFunc{};
	floatStaticFunc.BindUFunction(this, "ColorInterp");
	
        //Create the timeline
	TestTimeline = FTimeline();
	TestTimeline.AddInterpFloat(TestFloatCurve, floatStaticFunc, TEXT("Float Function"));
}

// Called when the game starts or when spawned
void ATestTimelineActor::BeginPlay()
{
	Super::BeginPlay();
	TestTimeline.PlayFromStart();
	GEngine->AddOnScreenDebugMessage(-1, 1.0f, FColor::Green, TEXT("Tick Component"));
}

// Called every frame
void ATestTimelineActor::Tick( float DeltaTime )
{
	Super::Tick( DeltaTime );
	if (TestTimeline.IsPlaying())
		TestTimeline.TickTimeline(DeltaTime);
}

void ATestTimelineActor::ColorInterp(float pValue)
{
	GEngine->AddOnScreenDebugMessage(-1, 1.0f, FColor::Black, TEXT("Interp Value: ") + FString::SanitizeFloat(pValue));
}