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Simple spline mesh example help

Hello,

I am fairly new to Unreal. I am trying to spawn a simple spline mesh. I have had no success so far. The code I have causes the engine to crash. I have even tried removing the for loop to do only a single start, end and tangent for a mesh, but it did not work either. I've tried removing different parts and changing it up, and it looks like it crashes when calling the "MySplineMesh->SetStartAndEnd()" function.

My method and code may be completely wrong. Any help or advice would be very much appreciated. Thank you.

(about the error: Access violation - code c0000005 (first/second chance not available) I received a similar error c0000001 at one point with this struggle as well, but not most recently.)

 AMyActor::AMyActor()
 {
      // Set this actor to call Tick() 
     PrimaryActorTick.bCanEverTick = false;
 
         // Create a root component
     USceneComponent *TopScene = CreateDefaultSubobject<USceneComponent>(TEXT("RootComponent"));
     RootComponent = TopScene;
 
     // create a SplineComponent
     USplineComponent *MySpline = CreateDefaultSubobject<USplineComponent>(TEXT("SplineComponent"));
     MySpline->AttachTo(TopScene);
 
     // add tangents 
     MySpline->AddSplinePoint(FVector(1000, 1, 1), ESplineCoordinateSpace::World);
     MySpline->AddSplinePoint(FVector(1, 1000, 1), ESplineCoordinateSpace::World);
     MySpline->AddSplinePoint(FVector(2000, 1, 1), ESplineCoordinateSpace::World);
     MySpline->AddSplinePoint(FVector(1, 2000, 1), ESplineCoordinateSpace::World);
     MySpline->AddSplinePoint(FVector(3000, 1, 1), ESplineCoordinateSpace::World);
     MySpline->SetClosedLoop(false);
     
     // create static mesh
     ConstructorHelpers::FObjectFinder<UStaticMesh>MyMeshCube(TEXT("/Game/StarterContent/Shapes/Shape_Cube.Shape_Cube"));
 
     for (int32 i = 0; i < MySpline->GetNumberOfSplinePoints() - 1; i++)
     {
 
         //USplineMeshComponent *MySplineMesh = CreateDefaultSubobject<USplineMeshComponent>(TEXT("SplineMeshComponent"));
         USplineMeshComponent *MySplineMesh = ConstructObject<USplineMeshComponent>(USplineMeshComponent::StaticClass(), this);
         
         MySplineMesh->SetMobility(EComponentMobility::Movable);
         MySplineMesh->AttachParent = MySpline;
         MySplineMesh->SetStaticMesh(MyMeshCube.Object);
         
         // set scale of mesh
         MySplineMesh->SetStartScale(FVector2D(1, 1));
         MySplineMesh->SetEndScale(FVector2D(1, 1));
 
         FVector pointLocationStart, pointLocationEnd, pointTangentStart, pointTangentEnd;
 
         MySpline->GetLocationAndTangentAtSplinePoint(i, pointLocationStart, pointTangentStart, ESplineCoordinateSpace::Local);
         MySpline->GetLocationAndTangentAtSplinePoint(i + 1, pointLocationEnd, pointTangentEnd, ESplineCoordinateSpace::Local);
 
         MySplineMesh->SetStartAndEnd(pointLocationStart, pointTangentStart, pointLocationEnd, pointTangentEnd);
 
     }
 
     RegisterAllComponents();
 
 }
 
 
Product Version: UE 4.10
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asked Mar 30 '16 at 09:42 PM in C++ Programming

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dustimusprime
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