Unreal 4 spline movement script

SplineCharacter.cpp

void ASplineCharacter::MoveRight(float Value)
{
    if (GameStateRef == nullptr || GameStateRef->MovementSpline == nullptr)
    {
        AddMovementInput(FVector(0.f, -1.f, 0.f), Value);
        return;
    }

    //Orient and move player in the direction of the spline
    SplineDirection = GameStateRef->MovementSpline->Spline->FindDirectionClosestToWorldLocation(GetActorLocation(), ESplineCoordinateSpace::World);

    SplineDirection.Z = 0.0f;
    SplineDirection.Normalize();
    AddMovementInput(SplineDirection, Value);    
    
    SplineStatus = GameStateRef->MovementSpline->ReachedSplineLimit(GetActorLocation() + GetCharacterMovement()->GetPendingInputVector() * 50.0f);

    //If we're at the end of the spline and are clamping movement, stop the player. Otherwise, adjust lateral movement.
    if (ClampToSpline && SplineStatus != ESplineLocationStatus::SL_OnSpline)
    {
        //NOTE: Could use a ternary for this but decided a switch was more readable
        switch (SplineStatus) {
        case ESplineLocationStatus::SL_ReachedBegin :
                SplineLocation = GameStateRef->MovementSpline->Spline->GetLocationAtDistanceAlongSpline(GameStateRef->MovementSpline->DistanceAtStart, ESplineCoordinateSpace::World);
                break;
        case ESplineLocationStatus::SL_ReachedEnd :
                SplineLocation = GameStateRef->MovementSpline->Spline->GetLocationAtDistanceAlongSpline(GameStateRef->MovementSpline->DistanceAtEnd, ESplineCoordinateSpace::World);
                break;
        }

        GetMovementComponent()->ConsumeInputVector();
        SplineLocation.Z = GetActorLocation().Z;      
    }
    else
    {
        //Find the nearest point to player on the spline
        SplineLocation = GameStateRef->MovementSpline->Spline->FindLocationClosestToWorldLocation(GetActorLocation(), ESplineCoordinateSpace::World);
        if (CameraActorRef != nullptr)
            CameraActorRef->TargetLocation = FVector(GetActorLocation().X, GetActorLocation().Y, SplineLocation.Z);
        SplineLocation.Z = GetActorLocation().Z;

        //Get the vector from the player's location to the nearest point on the spline
        FVector SplineLocationVector = (GetActorLocation() - SplineLocation);
        SplineLocationVector.Z = GetActorLocation().Z;

        //Calculate the tangent of the spline at the nearest point and determine the distance to the player
        FVector splineTangent = FVector::CrossProduct(SplineDirection, FVector::UpVector);
        DistanceToSpline = FVector::DotProduct(SplineLocationVector, splineTangent);

        //Find the spline point directly to the side of the player
        //This is necessary to prevent forward/backward movement along the spline unless applied by the CharacterMovement component
        SplineLocation = -DistanceToSpline * splineTangent.GetSafeNormal() + GetActorLocation();
    }   
    
    //Smoothly move the player onto the spline
    SplineLocation = FMath::VInterpTo(GetActorLocation(), SplineLocation, GetWorld()->GetDeltaSeconds(), SplineLerpSpeed);

    SetActorLocation(SplineLocation, true, nullptr,ETeleportType::TeleportPhysics);

 }