Unreal - NPC 상호작용

NPC에 상호작용이 가능하게 할수있는 콜리전을 달아줍니다

 

사용할 헤더추가

#include "Components/SphereComponent.h"

 

트리거용 스피어컴포넌트와 탐지될 범위를 지정해줍니다

UPROPERTY(EditAnywhere)
class USphereComponent* detectSphere;

UPROPERTY(EditAnywhere, Category="Detect")
float detectRadius = 200.0;

 

플레이어한테 붙혀주고 범위를 설정해줍니다

detectSphere = CreateDefaultSubobject<USphereComponent>(TEXT("detectSphere"));
detectSphere->SetupAttachment(RootComponent);
detectSphere->SetSphereRadius(detectRadius);
detectSphere->SetCollisionProfileName(TEXT("npcInterectionTrigget"));

 

위젯 컴포넌트를 달아줍니다

#include "Components/WidgetInteractionComponent.h"

	UPROPERTY(EditAnywhere, Category = "Detect")
	class UWidgetInteractionComponent* npcGWidgetInteractionComponent;

npcGWidgetInteractionComponent = CreateDefaultSubobject<UWidgetComponent>(TEXT("GInteractionComponent"));
npcGWidgetInteractionComponent->SetupAttachment(RootComponent);
npcGWidgetInteractionComponent->SetRelativeLocation(FVector(52.f, 0.f, 52.f));
npcGWidgetInteractionComponent->SetWidgetSpace(EWidgetSpace::Screen);
npcGWidgetInteractionComponent->SetVisibility(false);

 

사용할 위젯을 만들어주고 InteractionComponent에 넣어줍니다 

 

 

Beginoverlap과 Endoverlap을 처리해줍니다

void ANpcUits::BeginPlay()
{
	Super::BeginPlay();
	detectSphere->OnComponentBeginOverlap.AddDynamic(this, &ANpcUits::OnBeginOverlapNpc);
	detectSphere->OnComponentEndOverlap.AddDynamic(this, &ANpcUits::EndOverlapNpc);
}

 

BeginOverlap은 PrimitiveComponent의

UPrimitiveComponent* OverlappedComponent 부터 const FHitResult & SweepResult까지 입니다

UPrimitiveComponent* OverlappedComponent, AActor* OtherActor, UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult& SweepResult

 

EndOverlap은 PrimitiveComponent의

UPrimitiveComponent* OverlappedComponent 부터 Int32 OtherBodyIndex 까지 입니다

UPrimitiveComponent* OverlappedComponent, AActor* OtherActor, UPrimitiveComponent* OtherComp, int32 OtherBodyIndex

 

플레이어를 선언후 플레이어가 오버랩 / 엔드오버랩 이벤트가 발생하면 g 인터렉선 위젯이 보이게 / 안보이게 설정해줍니다

class ASwordCharacter* player;

void ANpcUits::OnBeginOverlapNpc(UPrimitiveComponent* OverlappedComponent, AActor* OtherActor, UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult& SweepResult)
{
	player = Cast<ASwordCharacter>(UGameplayStatics::GetPlayerCharacter(GetWorld(), 0));
	if (OtherActor == player)
	{
		npcGWidgetInteractionComponent->SetVisibility(true);
	}
	
}

void ANpcUits::EndOverlapNpc(UPrimitiveComponent* OverlappedComponent, AActor* OtherActor, UPrimitiveComponent* OtherComp, int32 OtherBodyIndex)
{
	if (OtherActor == player)
	{
		npcGWidgetInteractionComponent->SetVisibility(false);
	}
}

 

상호작용할 npc를 구분해주는 코드를 추가해줍니다

캐릭터에서 상호작용할 npc를 선언

UPROPERTY()
ANpcUits* currentInteractionNpc = nullptr;

 

오버랩 되었을때 포인터를 this로 넘겨줍니다

void ANpcUits::OnBeginOverlapNpc(UPrimitiveComponent* OverlappedComponent, AActor* OtherActor, UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult& SweepResult)
{
	player = Cast<ASwordCharacter>(UGameplayStatics::GetPlayerCharacter(GetWorld(), 0));
	if (OtherActor == player)
	{
		player->currentInteractionNpc = this;
	}
}

 

상호작용하면 시점이 바뀔 시네 카메라를 세팅해줍니다

 

사용할 헤더 추가

#include "CineCameraActor.h"

 

#include "EngineUtils.h"

 

포인터를 저장할 CineCameraActor인 npcInteractionCamera와

무슨카메라인지를 구분하기위한 Name타입 npcCameraTagName를 선언

UPROPERTY()
ACineCameraActor* npcInteractionCamera;

UPROPERTY(EditAnywhere, Category = "Sequence")
FName npcCameraTagName;

 

BeginPlay에서 iterator로 이름이 npcCamera로 설정된걸 찾아 npcInteractionCamera포인터에 저장해줍니다

태그로 설정한 카메라만 찾게됩니다

 

각각 태그를 달아줍니다

 

--장비판매npc--

 

--물약npc--

 

각각 달린 태그이름이 가진 카메라를 npcInteractionCamera포인터에 저장하게됩니다

void ANpcUits::BeginPlay()
{
	Super::BeginPlay();
	for (TActorIterator<ACineCameraActor>it(GetWorld()); it; ++it)
	{
		ACineCameraActor* npcOwnCamera = *it;
		if (npcOwnCamera->GetName() == npcCamera)
		{
			npcInteractionCamera = npcOwnCamera;
		}
	}
}

 

 

 

사용하고있는 컨트롤러가 npcInteractionCamera로 시점이 변경되며

플레이어메시,모든하이어라키 자식들과 InteractionHidePlayerWidget함수로 현재 사용하고있는 위젯을 잠시 숨깁니다

InteractionHidePlayerWidget함수는 지금 플레이어가 사용하고있는 위젯을 숨기는 커스텀함수입니다

void ANpcUits::StartInteractionCamera()
{
	player = Cast<ASwordCharacter>(UGameplayStatics::GetPlayerCharacter(GetWorld(), 0));
	player->GetMesh()->SetVisibility(false, true);
	APlayerController* pc = Cast<APlayerController>(player->GetController());
	ASwordPlayController* swordCon = Cast<ASwordPlayController>(pc);
	if (player)
	{
		swordCon->SetViewTargetWithBlend(npcInteractionCamera, 1.0f);
		swordCon->InteractionHidePlayerWidget();
	}
}

 

 

Interaction 대화창을 만들어줍니다

 

위젯에서 npcText매개변수값으로 텍스트를 변경합니다

void UNpcInteractionWidget::SetInteractionText(FString& npcText)
{
	TextBlock_Interaction->SetText(FText::FromString(npcText));
}

 

npc에 할당되어있는 npcInteractionTalk string값으로 변경이됩니다

UPROPERTY(EditAnywhere, Category = "Interaction")
FString npcInteractionTalk;

interactionWidgetInstance->SetInteractionText(npcInteractionTalk);

 

 

상호작용할때 npc가 행동하는 애니메이션을 mixamo에서 들고오겠습니다

들고올 애니메이션입니다

 

해당 애니메이션을 리타게팅하여 위젯이 보여질때 플레이되도록 했습니다

또한 npc머리위에 네임플레이트를 달아주었습니다

UPROPERTY(EditAnywhere, Category = "Interaction")
UWidgetComponent* NamePlateWidget;

NamePlateWidget = CreateDefaultSubobject<UWidgetComponent>(TEXT("NamePlate"));
NamePlateWidget->SetupAttachment(RootComponent);
NamePlateWidget->SetWidgetSpace(EWidgetSpace::Screen);
NamePlateWidget->SetRelativeLocation(FVector(0.f, 0.f, 130.f));

 

결과물