How to add new functionality to the function spline component?

Development Programming & Scripting Blueprint
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2

Hi AlexHakeemStorm
The thing you want is actually basic:

  1. Create a new Class child from USplineComponent

  2. Because there is not virtual function for such stuff, you will need create a new UFUNCTION method, something like this:

    UFUNCTION(BlueprintCallable, Category = “whatever”)
    void AddSplinePointWithRotation(const FVector& Position, const FRotator& Rotation,ESplineCoordinateSpace::Type CoordinateSpace, bool bUpdateSpline);

  3. now inside your souce cpp you can almost re use the same functionally:

                   const FVector TransformedPosition = (CoordinateSpace == ESplineCoordinateSpace::World) ?
	ComponentToWorld.InverseTransformPosition(Position) : Position;

// Add the spline point at the end of the array, adding 1.0 to the current last input key.
// This continues the former behavior in which spline points had to be separated by an interval of 1.0.
const float InKey = SplineCurves.Position.Points.Num() ? SplineCurves.Position.Points.Last().InVal + 1.0f : 0.0f;

SplineCurves.Position.Points.Emplace(InKey, TransformedPosition, FVector::ZeroVector, FVector::ZeroVector, CIM_CurveAuto);
SplineCurves.Rotation.Points.Emplace(InKey, Rotation, FQuat::Identity, FQuat::Identity, CIM_CurveAuto);
SplineCurves.Scale.Points.Emplace(InKey, FVector(1.0f), FVector::ZeroVector, FVector::ZeroVector, CIM_CurveAuto);

if (bLoopPositionOverride)
{
	LoopPosition += 1.0f;
}

if (bUpdateSpline)
{
	UpdateSpline();
}