[UE] Behavior Tree: 순찰(Patrol)

적의 상태에 따라 이동속도를 다르게 설정해보자.  적 Behavior Tree에 순찰 기능을 추가하고 Player가 접근하면 달려오도록 수정해보자.

 

 

목차

 

 

---

 

 

 

Plugins
	Weapon
		Resource
			Icon128.png weapon_thumbnail_icon.png
		Source
			Weapon
			SWeaponCheckBoxes.h .cpp SWeaponDetailsView.h .cpp SWeaponDoActionData.h .cpp SWeaponEquipmentData.h .cpp SWeaponHitData.h .cpp SWeaponLeftArea.h .cpp Weapon.Build.cs WeaponAssetEditor.h .cpp WeaponAssetFactory.h .cpp WeaponCommand.h .cpp  WeaponContextMenu.h .cpp WeaponModule.h .cpp WeaponStyle.h .cpp

 

Source
		BehaviorTree
		CBTService_Melee.h .cpp CBTTaskNode_Patrol.h .cpp 생성 CBTTaskNode_Speed.h .cpp 생성 CPatrol.h .cpp 생성
		Characters
		CAIController.h .cpp CAnimInstance.h .cpp CEnemy.h .cpp  CEnemy_AI.h .cpp CPlayer.h.cpp ICharacter.h .cpp
		Components
		CAIBehaviorComponent.h .cpp CFeetComponent.h .cpp CMontagesComponent.h .cpp  CMovementComponent.h .cpp  CStateComponent.h .cpp CStatusComponent.h .cpp   CWeaponComponent.h .cpp  CZoomComponent.h .cpp
		Notifies
		CAnimNotifyState_BeginAction.h .cpp CAnimNotifyState_BowString.h .cpp CAnimNotify_CameraShake.h .cpp  CAnimNotify_End_Parkour CAnimNotifyState_EndAction.h .cpp CAnimNotify_EndState.h .cpp CAnimNotifyState.h .cpp CAnimNotifyState_CameraAnim.h .cpp CAnimNotifyState_Collision.h .cpp  CAnimNotifyState_Combo.h .cpp CAnimNotifyState_Equip.h .cpp CAnimNotifyState_SubAction.h .cpp
		Parkour
		CParkourComponent.h .cpp
		Utilities
		CHelper.h CLog.h .cpp
		Weapons
		CArrow.h .cpp CAura.h .cpp CCamerModifier.h .cpp CGhostTrail.h .cpp CRotate_Object.h .cpp CThornObject.h .cpp CAnimInstance_Bow.h .cpp CAttachment_Bow.h .cpp CDoAction_Around.h .cpp CDoAction_Bow.h .cpp CDoAction_Combo.h .cpp CDoAction_Warp.h .cpp CSubAction_Around.h .cpp CSubAction_Bow.h .cpp CSubAction_Fist.h .cpp CSubAction_Hammer.h .cpp CSubAction_Sword.h .cpp CDoAction_Warp.h .cpp CAttachment.h .cpp CDoAction.h .cpp CEquipment.h .cpp CSubAction.h .cpp CWeaponAsset.h .cpp CWeaponStructures.h .cpp
		Global.h CGameMode.h .cpp U2212_06.Build.cs
		U2212_06.uproject

 

 

 

Speed 변경하기

 

 

---

 

CBTTaskNode_Speed 생성

 

새 C++ 클래스 - BTTaskNode - CBTTaskNode_Speed  생성

 

CBTTaskNode_Speed.h

#pragma once
#include "CoreMinimal.h"
#include "BehaviorTree/BTTaskNode.h"
#include "Components/CMovementComponent.h"
#include "CBTTaskNode_Speed.generated.h"
 
UCLASS()
class U2212_06_API UCBTTaskNode_Speed : public UBTTaskNode
{
	GENERATED_BODY()
 
private:
	UPROPERTY(EditAnywhere, Category = "Type")
		ESpeedType Type;
 
public:
	UCBTTaskNode_Speed();
 
private:
	EBTNodeResult::Type ExecuteTask(UBehaviorTreeComponent& OwnerComp, uint8* NodeMemory) override;
};

 

 

 

CBTTaskNode_Speed.cpp

#include "BehaviorTree/CBTTaskNode_Speed.h"
#include "Global.h"
#include "Characters/CEnemy_AI.h"
#include "Characters/CAIController.h"
 
UCBTTaskNode_Speed::UCBTTaskNode_Speed()
{
	NodeName = "Speed";
}
 
EBTNodeResult::Type UCBTTaskNode_Speed::ExecuteTask(UBehaviorTreeComponent& OwnerComp, uint8* NodeMemory)
{
	//EBTNodeResult::Type은 Composite과 Task 공유해서 사용한다.
	Super::ExecuteTask(OwnerComp, NodeMemory);
 
	
	ACAIController* controller = Cast<ACAIController>(OwnerComp.GetOwner());//OwnerComp로부터 controller를 가져온다.
	ACEnemy_AI* ai = Cast<ACEnemy_AI>(controller->GetPawn());//가져온 controller의 Pawn을 사용하여 Enemy_AI를 캐스팅한다.
	UCMovementComponent* movement = CHelpers::GetComponent<UCMovementComponent>(ai);
 
	movement->SetSpeed(Type);//CMovementComponent의 SetSpeed함수로 Type으로 지정한 속도를 넣고 변경한다.
 
	return EBTNodeResult::Succeeded;
}

 

---

 

 

※ 참고) EBTNodeResult의 Type들 - Succeeded, Failed, Aborted, InProgress

 

EBTNodeResult는 BehaviorTreeTypes.h에 선언되어 있고,

Behavior Tree 내의 Composite, Task 모두 사용한다. 

 

 

---

 

 

BT_Melee

 

 

---

 

 

실행화면

 

 

 

---

 

 

 

 

Patrol

 

---

 

Build.cs

 

Build.cs

using UnrealBuildTool;
 
public class U2212_06 : ModuleRules
{
	public U2212_06(ReadOnlyTargetRules Target) : base(Target)
	{
        PCHUsage = PCHUsageMode.UseExplicitOrSharedPCHs;
 
		PublicIncludePaths.Add(ModuleDirectory);
 
 
        PublicDependencyModuleNames.Add("Core");
 
        PrivateDependencyModuleNames.Add("CoreUObject");
        PrivateDependencyModuleNames.Add("Engine");
        PrivateDependencyModuleNames.Add("InputCore");
 
        PublicDependencyModuleNames.Add("Niagara");
 
        PublicDependencyModuleNames.Add("AIModule");
        PublicDependencyModuleNames.Add("GameplayTasks");
        PublicDependencyModuleNames.Add("NavigationSystem");
    }
}

모듈 추가

•  PublicDependencyModuleNames.Add("NavigationSystem");

 

---

 

 

 

CPatrolPath 생성

 

새 C++ 클래스 - Actor - CPatrolPath 생성

 

 

CPatrolPath.h

#pragma once
#include "CoreMinimal.h"
#include "GameFramework/Actor.h"
#include "CPatrolPath.generated.h"
 
UCLASS()
class U2212_06_API ACPatrolPath : public AActor
{
	GENERATED_BODY()
 
private:
	UPROPERTY(EditAnywhere, Category = "Loop")
		bool bLoop;
 
	UPROPERTY(EditAnywhere, Category = "Path")
		int32 Index;
 
	UPROPERTY(EditAnywhere, Category = "Path")
		bool bReverse;
 
private:
	UPROPERTY(VisibleDefaultsOnly)
		class USceneComponent* Root;
 
	UPROPERTY(VisibleDefaultsOnly)
		class USplineComponent* Spline;
 
	UPROPERTY(VisibleDefaultsOnly)
		class UTextRenderComponent* Text;
 
public:
	FORCEINLINE class USplineComponent* GetSpline() { return Spline; }
 
public:	
	ACPatrolPath();
	void OnConstruction(const FTransform& Transform) override;
 
protected:
	virtual void BeginPlay() override;
 
public:
	FVector GetMoveTo();
	void UpdateIndex();
 
};

 

 

 

CPatrolPath.cpp

#include "BehaviorTree/CPatrolPath.h"
#include "Global.h"
#include "Components/SplineComponent.h"
#include "Components/TextRenderComponent.h"
 
ACPatrolPath::ACPatrolPath()
{
	bRunConstructionScriptOnDrag = false;
 
	CHelpers::CreateComponent<USceneComponent>(this, &Root, "Root");
	CHelpers::CreateComponent<USplineComponent>(this, &Spline, "Spline", Root);
	CHelpers::CreateComponent<UTextRenderComponent>(this, &Text, "Text", Root);
 
	Spline->SetRelativeLocation(FVector(0, 0, 30));
	Spline->bHiddenInGame = false;
 
	Text->SetRelativeLocation(FVector(0, 0, 120));
	Text->SetRelativeRotation(FRotator(0, 180, 0));
	Text->HorizontalAlignment = EHorizTextAligment::EHTA_Center;
	Text->TextRenderColor = FColor::Red;
	Text->bHiddenInGame = true;
}
 
void ACPatrolPath::OnConstruction(const FTransform& Transform)
{
	Super::OnConstruction(Transform);
 
#if WITH_EDITOR
	Text->Text = FText::FromString(GetActorLabel());//GetActorLabel()은 Editor에 있는 함수라서 Project Package 시에는 지워줘야 한다.
#endif
 
	Spline->SetClosedLoop(bLoop);
}
 
void ACPatrolPath::BeginPlay()
{
	Super::BeginPlay();
}
 
FVector ACPatrolPath::GetMoveTo()
{
	//다음 Spline Point 이동을 위해 Spline의 다음 Point의 World 위치를 리턴. 
	return Spline->GetLocationAtSplinePoint(Index, ESplineCoordinateSpace::World);
}
 
void ACPatrolPath::UpdateIndex()
{
	int32 count = Spline->GetNumberOfSplinePoints();//cout변수에 Spline Points 숫자를 넣어준다.
 
	if (bReverse)//역방향
	{
		if (Index > 0)
		{
			Index--;
 
			return;
		}
 
		if (Spline->IsClosedLoop())
		{
			Index = count - 1;
 
			return;
		}
 
		Index = 1;
		bReverse = false;
 
		return;
	}
 
	if (Index < count - 1)//정방향
	{
		Index++;
 
		return;
	}
 
	if(Spline->IsClosedLoop())
	{
		Index = 0;
 
		return;
	}
 
	Index = count - 2;
	bReverse = true;//역방향으로 만든다.
}

 

 

---

 

 

BP_CPatrolPath 생성 + Viewport에 Spline 그리기

 

BP_CPatrolPath 생성 후 Viewport에 Spline을 배치한다.

BP_Enemy_Melee의 Patrol - Project Path에 Viewport에 배치한 BP_CPatrolPath 중 하나를 할당한다.

---

 

 

 

CBTTaskNode_Patrol 생성

 

새 C++ 클래스 - BTTaskNode - CBTTaskNode_Patrol 생성

 

CBTTaskNode_Patrol.h

#pragma once
#include "CoreMinimal.h"
#include "BehaviorTree/BTTaskNode.h"
#include "CBTTaskNode_Patrol.generated.h"
 
UCLASS()
class U2212_06_API UCBTTaskNode_Patrol : public UBTTaskNode
{
	GENERATED_BODY()
 
private:
    UPROPERTY(EditAnywhere, Category = "Patrol")
        bool bDebugMode;//디버그 모드 on/off
 
    UPROPERTY(EditAnywhere, Category = "Patrol")
        float AcceptanceDistance = 20;//순찰 경로 간격
 
    UPROPERTY(EditAnywhere, Category = "Random")
        float RandomRadius = 1500;//순찰 경로가 없을 때 랜덤으로 움직이는 범위
 
public:
    UCBTTaskNode_Patrol();
 
protected:
    virtual EBTNodeResult::Type ExecuteTask(UBehaviorTreeComponent& OwnerComp, uint8* NodeMemory) override;
    virtual void TickTask(UBehaviorTreeComponent& OwnerComp, uint8* NodeMemory, float DeltaSeconds) override;
 
};

 

 

 

CBTTaskNode_Patrol.cpp

#include "BehaviorTree/CBTTaskNode_Patrol.h"
#include "Global.h"
#include "CPatrolPath.h"
#include "Components/SplineComponent.h"
#include "Components/CAIBehaviorComponent.h"
#include "Characters/CEnemy_AI.h"
#include "Characters/CAIController.h"
#include "NavigationSystem.h"
 
UCBTTaskNode_Patrol::UCBTTaskNode_Patrol()
{
	NodeName = "Patrol";
 
	bNotifyTick = true;//작성해야 Tick이 실행된다. Tick을 실행하려면 반드시 작성해야 한다.
}
 
EBTNodeResult::Type UCBTTaskNode_Patrol::ExecuteTask(UBehaviorTreeComponent& OwnerComp, uint8* NodeMemory)
{
	Super::ExecuteTask(OwnerComp, NodeMemory);
 
	ACAIController* controller = Cast<ACAIController>(OwnerComp.GetOwner());
	ACEnemy_AI* ai = Cast<ACEnemy_AI>(controller->GetPawn());
	UCAIBehaviorComponent* behavior = CHelpers::GetComponent<UCAIBehaviorComponent>(ai);
 
	//PatrolPath가 있을때
	if (!!ai->GetPatrolPath())
	{
		//움직일 위치를 Blackboard에 넣는다.
		FVector moveToPoint = ai->GetPatrolPath()->GetMoveTo();
		behavior->SetPatrolLocation(moveToPoint);
 
		if (bDebugMode)//순찰 경로 DrawDebug
			DrawDebugSphere(ai->GetWorld(), moveToPoint, 25, 25, FColor::Green, true, 5);
	
		return EBTNodeResult::InProgress;
	}
 
	//PatrolPath가 없을때
	FVector location = ai->GetActorLocation();
 
	UNavigationSystemV1* navSystem = FNavigationSystem::GetCurrent<UNavigationSystemV1>(ai->GetWorld());
	CheckNullResult(navSystem, EBTNodeResult::Failed);//navSystem이 없다면 EBTNodeResult::Failed 리턴
 
	//결과값을 리턴 받는다.
	FNavLocation point(location);
	while (true)
	{
		//갈 수 있는 위치가 나올때까지 계속 돌린다.
		if (navSystem->GetRandomPointInNavigableRadius(location, RandomRadius, point))
			break;
	}
 
	behavior->SetPatrolLocation(point.Location);
 
	if (bDebugMode)//순찰 경로 DrawDebug
		DrawDebugSphere(ai->GetWorld(), point.Location, 25, 25, FColor::Green, true, 5);
 
	return EBTNodeResult::InProgress;
}
 
void UCBTTaskNode_Patrol::TickTask(UBehaviorTreeComponent& OwnerComp, uint8* NodeMemory, float DeltaSeconds)
{
	Super::TickTask(OwnerComp, NodeMemory, DeltaSeconds);
 
	ACAIController* controller = Cast<ACAIController>(OwnerComp.GetOwner());
	ACEnemy_AI* ai = Cast<ACEnemy_AI>(controller->GetPawn());
	UCAIBehaviorComponent* behavior = CHelpers::GetComponent<UCAIBehaviorComponent>(ai);
 
	FVector location = behavior->GetPatrolLocation();//이동할 위치를 location 변수에 담아준다.
	EPathFollowingRequestResult::Type result = controller->MoveToLocation(location, AcceptanceDistance, false);
 
	switch(result)
	{
		case EPathFollowingRequestResult::Failed:
		{
			FinishLatentTask(OwnerComp, EBTNodeResult::Failed);			
		}
		break;
 
		case EPathFollowingRequestResult::AlreadyAtGoal:
		{
			if (ai->GetPatrolPath())
				ai->GetPatrolPath()->UpdateIndex();//다음 위치를 갱신해준다.
 
			FinishLatentTask(OwnerComp, EBTNodeResult::Succeeded);
		}
		break;
	}
}

 

 

 

 

 

※ 참고) PathFollwingComponent.h의  EPathFollowingRequestResult

---

 

CEnemy_AI

 

CEnemy_AI.h

#pragma once
#include "CoreMinimal.h"
#include "Characters/CEnemy.h"
#include "CEnemy_AI.generated.h"
 
UCLASS()
class U2212_06_API ACEnemy_AI : public ACEnemy
{
	GENERATED_BODY()
 
private:
	UPROPERTY(EditDefaultsOnly, Category = "AI")
		class UBehaviorTree* BehaviorTree;
 
	UPROPERTY(EditDefaultsOnly, Category = "AI")
		uint8 TeamID = 2;//TeamID를 0~255번까지 지정가능하다. 255번은 중립이다. ID 같으면 아군이고 ID가 다르면 적이다.
 
private:
	UPROPERTY(EditDefaultsOnly, Category = "Label")
		float LabelViewAmount = 3000.0f;
 
private:
	UPROPERTY(EditAnywhere, Category = "Patrol")
		class ACPatrolPath* PatrolPath;//클래스 밖에서도 지정할 수 있어야 한다. 서로간 만들어진 객체를 참조할것이라서 softObjectPtr 사용
 
#if WITH_EDITOR
private:
	UPROPERTY(VisibleDefaultsOnly)
		class UWidgetComponent* LabelWidget;
#endif
	
private:
	UPROPERTY(VisibleDefaultsOnly)
		class UCWeaponComponent* Weapon;
 
	UPROPERTY(VisibleDefaultsOnly)
		class UCAIBehaviorComponent* Behavior;
 
public:
	FORCEINLINE uint8 GetTeamID() { return TeamID; }
	FORCEINLINE class UBehaviorTree* GetBehaviorTree() { return BehaviorTree; }
	FORCEINLINE class ACPatrolPath* GetPatrolPath() { return PatrolPath; }
 
public:
	ACEnemy_AI();
 
protected:
	virtual void BeginPlay() override;
 
public:
	virtual void Tick(float DeltaTime) override;
 
private:
	void UpdateLabelRenderScale();
};

변수 추가

• UPROPERTY(EditAnywhere, Category = "Patrol")
  class ACPatrolPath* PatrolPath;
  • 클래스 밖에서도 지정할 수 있어야 한다. 서로간 만들어진 객체를 참조할것이라서 softObjectPtr 사용

 

인라인 함수 추가

• FORCEINLINE class ACPatrolPath* GetPatrolPath() { return PatrolPath; }

 

 

 

CEnemy_AI.cpp

#include "Characters/CEnemy_AI.h"
#include "Global.h"
#include "Components/CWeaponComponent.h"
#include "Components/CAIBehaviorComponent.h"
#include "Components/WidgetComponent.h"
#include "Components/CStatusComponent.h"
#include "Widgets/CUserWidget_Label.h"
 
ACEnemy_AI::ACEnemy_AI()
{
	PrimaryActorTick.bCanEverTick = true;
 
	CHelpers::CreateComponent<UWidgetComponent>(this, &LabelWidget, "Label", GetMesh());
 
	CHelpers::CreateActorComponent<UCWeaponComponent>(this, &Weapon, "Weapon");
	CHelpers::CreateActorComponent<UCAIBehaviorComponent>(this, &Behavior, "Behavior");
 
 
	TSubclassOf<UCUserWidget_Label> labelClass;
	CHelpers::GetClass<UCUserWidget_Label>(&labelClass, "WidgetBlueprint'/Game/Widgets/WB_Label.WB_Label_C'");
	LabelWidget->SetWidgetClass(labelClass);
	LabelWidget->SetRelativeLocation(FVector(0, 0, 220));
	LabelWidget->SetDrawSize(FVector2D(120, 0));
	LabelWidget->SetWidgetSpace(EWidgetSpace::Screen);
}
 
void ACEnemy_AI::BeginPlay()
{
	Super::BeginPlay();
 
	LabelWidget->InitWidget();
 
	UCUserWidget_Label* label = Cast<UCUserWidget_Label>(LabelWidget->GetUserWidgetObject());
	label->UpdateHealth(Status->GetHealth(), Status->GetMaxHealth());
	label->UpdateName(GetName());
	label->UpdateControllerName(GetController()->GetName());
}
 
void ACEnemy_AI::Tick(float DeltaTime)
{
	Super::Tick(DeltaTime);
 
	UCUserWidget_Label* label = Cast<UCUserWidget_Label>(LabelWidget->GetUserWidgetObject());
 
	if (!!label)
	{
		label->UpdateHealth(Status->GetHealth(), Status->GetMaxHealth());
 
		UpdateLabelRenderScale();
	}
}
 
void ACEnemy_AI::UpdateLabelRenderScale()
{
	UCUserWidget_Label* label = Cast<UCUserWidget_Label>(LabelWidget->GetUserWidgetObject());
	CheckNull(label);
 
 
	APlayerCameraManager* cameraManager = UGameplayStatics::GetPlayerCameraManager(GetWorld(), 0);
 
	FVector cameraLocation = cameraManager->GetCameraLocation();
	FVector targetLocation = GetController()->GetTargetLocation();
 
	float distance = FVector::Distance(cameraLocation, targetLocation);
	float sizeRate = 1.0f - (distance / LabelViewAmount);
 
	if (distance > LabelViewAmount)
	{
		label->SetVisibility(ESlateVisibility::Collapsed);
 
		return;
	}
 
	label->SetVisibility(ESlateVisibility::Visible);
	label->SetRenderScale(FVector2D(sizeRate, sizeRate));
}

변경사항 없음.

 

 

 

---

 

 

CAIBehaviorComponent

 

 

CAIBehaviorComponent.h

#pragma once
#include "CoreMinimal.h"
#include "Components/ActorComponent.h"
#include "CAIBehaviorComponent.generated.h"
 
UENUM(BlueprintType)
enum class EAIStateType : uint8
{
	Wait = 0, Approach, Action, Patrol, Hitted, Avoid, Dead, Max,
};
DECLARE_DYNAMIC_MULTICAST_DELEGATE_TwoParams(FAIStateTypeChanged, EAIStateType, InPrevType, EAIStateType, InNewType);
 
UCLASS( ClassGroup=(Custom), meta=(BlueprintSpawnableComponent) )
class U2212_06_API UCAIBehaviorComponent : public UActorComponent
{
	GENERATED_BODY()
 
private:
	UPROPERTY(EditAnywhere, Category = "Key")
		FName AIStateTypeKey = "AIState";
 
	UPROPERTY(EditAnywhere, Category = "Key")
		FName TargetKey = "Target";
 
	UPROPERTY(EditAnywhere, Category = "Key")
		FName PatrolLocationKey = "Patrol_Location";
	
private:
	EAIStateType GetType();
 
public:
	bool IsWaitMode();
	bool IsApproachMode();
	bool IsActionMode();
	bool IsPatrolMode();
	bool IsHittedMode();
	bool IsAvoidMode();
	bool IsDeadMode();
 
public:	
	UCAIBehaviorComponent();
 
protected:
	virtual void BeginPlay() override;
 
public:
	FORCEINLINE void SetBlackboard(class UBlackboardComponent* InBlackboard) { Blackboard = InBlackboard; }
 
public:
	class ACharacter* GetTarget();
 
public:
	FVector GetPatrolLocation();
	void SetPatrolLocation(const FVector& InLocation);
 
public:
	void SetWaitMode();
	void SetApproachMode();
	void SetActionMode();
	void SetPatrolMode();
	void SetHittedMode();
	void SetAvoidMode();
	void SetDeadMode();
 
private:
	void ChangeType(EAIStateType InType);
 
public:
	FAIStateTypeChanged OnAIStateTypeChanged;
 
private:
	class UBlackboardComponent* Blackboard;
	
};

변수 추가

• UPROPERTY(EditAnywhere, Category = "Key")
          FName PatrolLocationKey = "Patrol_Location";

함수 추가

• FVector GetPatrolLocation();
• void SetPatrolLocation(const FVector& InLocation);

 

 

 

CAIBehaviorComponent.cpp

#include "Components/CAIBehaviorComponent.h"
#include "Global.h"
#include "GameFramework/Character.h"
#include "BehaviorTree/BlackboardComponent.h"
 
UCAIBehaviorComponent::UCAIBehaviorComponent()
{
}
 
void UCAIBehaviorComponent::BeginPlay()
{
	Super::BeginPlay();
}
 
EAIStateType UCAIBehaviorComponent::GetType()
{
	return (EAIStateType)Blackboard->GetValueAsEnum(AIStateTypeKey);
}
 
bool UCAIBehaviorComponent::IsWaitMode()
{
	return GetType() == EAIStateType::Wait;
}
 
bool UCAIBehaviorComponent::IsApproachMode()
{
	return GetType() == EAIStateType::Approach;
}
 
bool UCAIBehaviorComponent::IsActionMode()
{
	return GetType() == EAIStateType::Action;
}
 
bool UCAIBehaviorComponent::IsPatrolMode()
{
	return GetType() == EAIStateType::Patrol;
}
 
bool UCAIBehaviorComponent::IsHittedMode()
{
	return GetType() == EAIStateType::Hitted;
}
 
bool UCAIBehaviorComponent::IsAvoidMode()
{
	return GetType() == EAIStateType::Avoid;
}
 
bool UCAIBehaviorComponent::IsDeadMode()
{
	return GetType() == EAIStateType::Dead;
}
 
ACharacter* UCAIBehaviorComponent::GetTarget()
{
	//Blackboard 내의 TargetKey를 리턴해준다.
	return Cast<ACharacter>(Blackboard->GetValueAsObject(TargetKey));
}
 
FVector UCAIBehaviorComponent::GetPatrolLocation()
{
	return Blackboard->GetValueAsVector(PatrolLocationKey);
}
 
void UCAIBehaviorComponent::SetPatrolLocation(const FVector& InLocation)
{
	Blackboard->SetValueAsVector(PatrolLocationKey, InLocation);
}
 
void UCAIBehaviorComponent::SetWaitMode()
{
	ChangeType(EAIStateType::Wait);
}
 
void UCAIBehaviorComponent::SetApproachMode()
{
	ChangeType(EAIStateType::Approach);
}
 
void UCAIBehaviorComponent::SetActionMode()
{
	ChangeType(EAIStateType::Action);
}
 
void UCAIBehaviorComponent::SetPatrolMode()
{
	ChangeType(EAIStateType::Patrol);
}
 
void UCAIBehaviorComponent::SetHittedMode()
{
	ChangeType(EAIStateType::Hitted);
}
 
void UCAIBehaviorComponent::SetAvoidMode()
{
	ChangeType(EAIStateType::Avoid);
}
 
void UCAIBehaviorComponent::SetDeadMode()
{
	ChangeType(EAIStateType::Dead);
}
 
void UCAIBehaviorComponent::ChangeType(EAIStateType InType)
{
	EAIStateType prevType = GetType();
 
	Blackboard->SetValueAsEnum(AIStateTypeKey, (uint8)InType);
 
	if (OnAIStateTypeChanged.IsBound())
		OnAIStateTypeChanged.Broadcast(prevType, InType);
}

FVector UCAIBehaviorComponent::GetPatrolLocation()

• return Blackboard->GetValueAsVector(PatrolLocationKey);

 

void UCAIBehaviorComponent::SetPatrolLocation(const FVector& InLocation)

• Blackboard->SetValueAsVector(PatrolLocationKey, InLocation);

 

---

 

 

BB_Melee

 

새 키 - Patrol_Location 추가

 

 

 

※ 참고) Instance Synced

• 같은 Blackboard를 가진 애들 끼리 해당 값을 공유해준다.
• Instance Synced를 체크하면 군집 이동 등이 용이하다. ex. Enemy 한 명이 Player를 발견하면 발견한 Enemy뿐만 아니라 나머지 Enemy들이 다 같이 접근한다.

---

 

 

MT_Melee

 

---

 

 

 

실행화면

 

---