[언리얼엔진] C++로 트리거함수 콜백시키기, 트리거로 다른 오브젝트 작동

 

 

UPROPERTY(EditAnywhere)
    TArray<class AMyMovingPlatform__A*> LinkedMovingPlatforms;

트리거 플랫폼에서 트리거가 발생하면 다른 컴포넌트에게 특정한 함수를 호출하게 해야한다. 대상은 무빙플랫폼

 

void ActiveTrigger();
void DeactiveTrigger();

UPROPERTY(EditAnywhere)
	int RemainActiveTriggersNum;

무빙플랫폼에서 실행할 함수와 움직이기위한 조건인 Remain 선언

 

void AMyMovingPlatform__A::Tick(float DeltaTime)
{
	Super::Tick(DeltaTime);

	//남은 트리거 개수가 0보다 크면 -> 필요한것이 남아있는것... -> 작동 못하게
	if (RemainActiveTriggersNum > 0) return;

	if (HasAuthority())
	{
		FVector Location = GetActorLocation();

		Location += Direction * DeltaTime * MoveSpeed;

		SetActorLocation(Location);

		float TravelSize = (Location - GlobalStartLocation).Size();

		if (TravelSize > TravelLength)
		{
			Direction *= -1;

			FVector swapTemp = GlobalStartLocation;
			GlobalStartLocation = GlobalTargetLocation;
			GlobalTargetLocation = swapTemp;
		}
	}
}

void AMyMovingPlatform__A::ActiveTrigger()
{
	--RemainActiveTriggersNum;
}

void AMyMovingPlatform__A::DeactiveTrigger()
{
	++RemainActiveTriggersNum;
}

무빙플랫폼에서 RemainActiveTriggersNum이 1보다 크면 움직이지 않게 한다.

 

void AMyPlatformTrigger__A::MyCustomOverlapBegin(UPrimitiveComponent* OverlappedComp, AActor* OtherActor, UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult& SweepResult)
{
	UE_LOG(LogTemp, Log, TEXT("BEGIN"));

	for (int i = 0; i < LinkedMovingPlatforms.Num(); ++i)
	{
		LinkedMovingPlatforms[i]->ActiveTrigger();
	}
}

void AMyPlatformTrigger__A::MyCustomOverlapEnd(UPrimitiveComponent* OverlappedComponent, AActor* OtherActor, UPrimitiveComponent* OtherComp, int32 OtherBodyIndex)
{
	UE_LOG(LogTemp, Log, TEXT("END"));

	for (int i = 0; i < LinkedMovingPlatforms.Num(); ++i)
	{
		LinkedMovingPlatforms[i]->DeactiveTrigger();
	}
}

트리거 플랫폼에서 트리거가 발생하면 End / Begin에 맞게 Active, Deactive해준다.