Hello
For a few days I am trying to solve one problem with using UInstancedStaticMeshComponent. I have created class based on AActor.
Add as property some variables:
UPROPERTY(VisibleAnywhere, BlueprintReadOnly)
class UInstancedStaticMeshComponent* InstancedArrowsMesh;
UPROPERTY(EditInstanceOnly, BlueprintReadWrite, Category = "Arrows")
int32 CountArrows;
In the constructor I’ve write the next strings:
InstancedArrowsMesh = CreateDefaultSubobject<UInstancedStaticMeshComponent>(TEXT("InstancedArrowsMesh"));
InstancedArrowsMesh->AttachToComponent(StaticMesh, FAttachmentTransformRules::KeepRelativeTransform);
InstancedArrowsMesh->RegisterComponent();
InstancedArrowsMesh->InstancingRandomSeed = 26425;
InstancedArrowsMesh->SetMobility(EComponentMobility::Movable);
CountArrows = 3;
At the function BeginPlay I have write the next strings:
InstancedArrowsMesh->ClearInstances();
const int32 nMaxArrowCount = ArrowSpawnArray.Num();
for (int nArrowIdx = 0; nArrowIdx < CountArrows; nArrowIdx++)
{
if (nArrowIdx < nMaxArrowCount)
{
USceneComponent* sceneComp = ArrowSpawnArray[nArrowIdx];
if (sceneComp)
{
FTransform instanceTransform = sceneComp->GetRelativeTransform();
InstancedArrowsMesh->AddInstance(instanceTransform);
}
}
else
{
break;
}
}
After that, I’ve created blueprint class based on my C++ class.
If I am adding that blueprint class on sceen directly (using drag’n’drop) everthing is fine. After launch the game I see my object with Instanced Static Meshes objects. But if I spawn my object dynamicly using GetWorld()->SpawnActor(…) function I am seeing my object too, but without any instanced static meshes within.
What is wrong? What I have missed?
When I debugged this feature, everthing is fine, BeginPlay function is called and my Instanced Static Meshes added successfully. I have no idea, what I have missed
Please help me with it !!!
