GetChildrenComponents does not work!

Development Programming & Scripting Blueprint
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1

Tell me, please, why not write GetChildrenComponents child components in an array?

SceneComponent->GetChildrenComponents(true, Components);

2

Hey MrPrane,

What exactly isn’t working as you expect when it comes to GetChildrenComponents?

I’ve just tested this myself and I was able to successfully get an array of child components from one of my actors using the following code:

TArray<USceneComponent*> ChildArray;

JumpPadCollision->GetChildrenComponents(true, ChildArray);

To test this, printed a message to my log and it contained the expected component:

if (ChildArray[0] != NULL)
	{
		USceneComponent* ChildComp = ChildArray[0];

		UE_LOG(LogTemp, Warning, TEXT("Component: %s"), *ChildComp->GetName());
	}

Let me know if that code works for you, and if not, please provide the code that you are using so I can take a closer look.

3

I did the same as you, but I have nothing.

TArray Components;
USceneComponent* SceneComponent;
SceneComponent->GetChildrenComponents(true, Components);
if (Components[0] != NULL)
{
USceneComponent* ChildComp = Components[0];
GEngine->AddOnScreenDebugMessage(-1, 0.0f, FColor::Green, FString::Printf(TEXT("Component: %s"), *ChildComp->GetName()));
}
4

All I knew after 8 hours :slight_smile: We had to use RootComponent instead SceneComponent and register in BeginPlay, not in the constructor. Huge thank you for the help))

RootComponent->GetChildrenComponents(true, Components);

5

I have a new problem: when you turn on the component through physics blueprnt it is no longer written to the array. Can you please tell how to fix this problem?

6

This is by design. Take a look at the ticket referenced below: