How to get AIController from BTTaskNode

Unreal Engine Programming & Scripting AI
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#1

I have a behavior I’m working on in C++ that’s used for controlling AI Vehicle Input. I originally had it mocked up in Blueprint, but I’ve hit a bit of a snag implementing it on the code side.

In my blueprint, the task’s “Received Execute” node passes the Owner, which represents the AIController. I used the AIController to get the Controlled pawn, so I can later get its Vehicle Movement component, etc.

For the life of me, though, I cannot find a way to actually get the current AIController from a BTTaskNode. In ExecuteTask(), you have a pointer to a UBehaviorTreeComponent, so I’ve been trying the following:

UWheeledVehicleMovementComponent* UWagonDriveTask::GetVehicleMovementComponent(class UBehaviorTreeComponent* OwnerComp)
{
	AAIController* pController = Cast<AAIController>(OwnerComp->GetOwner());
	
	if (pController)
	{
		APawn* pPawn = pController->GetPawn();
		if (pPawn)
		{
			return Cast<UWheeledVehicleMovementComponent>(pPawn->GetComponentByClass(TSubclassOf<UWheeledVehicleMovementComponent>()));
		}
	}

	return NULL;
}

But, it seems to crash on actually getting the Component. Any ideas?

#2

Aaaaand I figured it out:

return Cast<UWheeledVehicleMovementComponent>(pPawn->GetComponentByClass(UWheeledVehicleMovementComponent::StaticClass()));