Hi,
I have a question similar to this: Is there a way to show a dynamic preview mesh in the level viewport?
But this time my “Spawner” is not an actor itself, but just a component which spawns a new Actor during BeginPlay. It’s used for putting items on a vehicle, which the player then can later pick up or return to.
This works fine as it is, but I really want to have a preview of the BP I’m going to spawn or else the positioning of the spawners will be a nightmare.
Any ideas?
Well, you could spawn the actors in the construction script by moving these nodes into a function and calling it, but that would be inefficient, as the actors would respawn every time you do anything in the editor. It would be a better idea to visualize the location with DrawDebugSphere or something similar in your Construction Script.
“Solved” it, for anyone who is interested:
I added an “InitPreview” method in C++ which is called in the ConstructionScript. This is surrounded by #if WITH_EDITOR.
// create preview component
if (ItemToSpawn)
{
AActor* Owner = GetOwner();
check(Owner);
UChildActorComponent* PreviewCmp = GetChildComponentByClass<UChildActorComponent>(this);
if (!PreviewCmp)
{
PreviewCmp = Cast<UChildActorComponent>(Owner->AddComponentByClass(UChildActorComponent::StaticClass(), true, FTransform::Identity, false));
if (PreviewCmp)
{
PreviewCmp->AttachToComponent(this, FAttachmentTransformRules::SnapToTargetIncludingScale);
PreviewCmp->bIsEditorOnly = true;
PreviewCmp->SetHiddenInGame(true);
}
}
if (PreviewCmp)
{
PreviewCmp->SetChildActorClass(ItemToSpawn);
}
}
In BeginPlayI destroy the ChildActorComponent. It works