I’ve just started converting my BPs to C++ today and I know close to nothing how Unreal’s C++ works. Right now I’m converting this piece of BP:
It depends. “Get AIController” is a bit of a special function as in it’s a global utility function, rather than being part of a specific class.
This “utility” function takes an “Actor” as input and adapts based on what you throw at it. If you give it a pawn, it’ll find the controller of the pawn. If you give it a controller, it’ll test the controller itself. That’s all it does, really. This utility function is located in the AIBlueprintHelperLibrary, and you can call it as is from c++.
//.h
UCLASS()
class AMyActor : public AActor
{
GENERATED_BODY()
public:
UPROPERTY()
TArray<AActor*> Enemies;
virtual void NotifyActorBeginOverlap(AActor* OtherActor) override;
};
//.cpp
void AMyActor::NotifyActorBeginOverlap(AActor* OtherActor)
{
Super::NotifyActorBeginOverlap(OtherActor);
for (AActor* Enemy : Enemies)
{
AAIController* C = UAIBlueprintHelperLibrary::GetAIController(Enemy);
if (C && C->GetAIPerceptionComponent())
{
C->GetAIPerceptionComponent()->SetSenseEnabled(UAISense_Sight::StaticClass(), false);
}
}
}
If your array of “Enemies” contain pawns, the more “standard” approach would be to use Pawn → GetController → Cast to AIController.
In c++ this would translate to
TArray<APawn*> Enemies;
for (APawn* Enemy : Enemies)
{
AAIController* C = Enemy->GetController<AAIController>();
if (C)
//...
}
Assuming your enemies are pawns (or characters, which anyway inherit from pawns) you use GetController, and cast its result to a generic AIController or to your specific AIController. Supposing it’s the former (in this example we’re just enabling their hearing sense):
#include "AIController.h"
#include "Perception/AIPerceptionComponent.h"
#include "AIModule/Classes/Perception/AISense_Hearing.h"
// your array it's something like TArray<APawn*> myEnemiesArray
for (auto& Enemy : myEnemiesArray)
{
AController* myEnemyController = Enemy->GetController();
AAIController* myAIEnemyController;
if (myEnemyController)
myAIEnemyController = Cast<AAIController>(myEnemyController);
if (myAIEnemyController)
{
myAIEnemyController->GetPerceptionComponent()->SetSenseEnabled(UAISense_Hearing::StaticClass(), true);
//whatever other logic you need
}
}
Hope that helps!
Cheers,
f
