Modify AI perception sense range during runtime

Development Programming & Scripting
4

Relevant code if anyone is interested. Compiles on 4.19.2 and seems to be working.

bool UYourFunctionLibrary::SetSightRange(AAIController* Controller, float NewSightRange)
{
	if (Controller == nullptr)
	{
		UE_LOG(LogTemp, Error, TEXT("Controller == nullptr"));
		return false;
	}

	FAISenseID Id = UAISense::GetSenseID(UAISense_Sight::StaticClass());
	if (!Id.IsValid())
	{
		UE_LOG(LogTemp, Error, TEXT("Wrong Sense ID"));
		return false;
	}

	auto Perception = Controller->GetAIPerceptionComponent();
	if (Perception == nullptr)
	{
		UE_LOG(LogTemp, Error, TEXT("Perception == nullptr"));
		return false;
	}

	auto Config = Perception->GetSenseConfig(Id);
	if (Config == nullptr)
	{
		UE_LOG(LogTemp, Error, TEXT("Config == nullptr"));
		return false;
	}

	auto ConfigSight = Cast<UAISenseConfig_Sight>(Config);

	// Save original lose range
	float LoseRange = ConfigSight->LoseSightRadius - ConfigSight->SightRadius;

	ConfigSight->SightRadius = NewSightRange;

	// Apply lose range to new radius of the sight
	ConfigSight->LoseSightRadius = ConfigSight->SightRadius + LoseRange;

	Perception->RequestStimuliListenerUpdate();

	return true;
}
2 Likes