[UE] Mixamo, 무기 추가(AK47)

언리얼 엔진에서 TPS(Third-Person Shooter) 게임에 무기를 추가하려면 여러 단계를 거쳐야 한다. 3D 모델링 소프트웨어를 사용하여 무기 자산을 생성하거나 마켓플레이스 또는 기타 소스에서 가져올 수 있다. 자산에는 무기의 모델, 애니메이션 및 사운드가 포함되어야 한다.


Characters
	CAnimInstance.h .cpp CPlayer.h .cpp
Utilities
	CHelpers.h CLog.h .cpp
Weapons
	CBullet.h .cpp CMagazine.h .cpp CWeapon.h .cpp CWeapon_AK47.h .cpp CWeapon_AR4.h .cpp CWeaponComponent.h .cpp
Widget
	CUserWidget_CrossHair.h .cpp CUserWidget_HUD.h .cpp
CGameMode.h .cpp Global.h CAnimNotifyState_Equip.h .cpp CAnimNotifyState_Reload.h .cpp

가방 추가, 무기(AK47) 추가

BP_CMagazine_AK47

BP_CMagazine_AR4 복사하여 BP_CMagazine_A.K47 생성

SK_AK47_Skeleton에 소켓 추가

소켓 추가 - Eject

소켓 추가 - Muzzle_Bullet

Skel_Mannequin에 소켓 추가

소켓 추가 - Backpack

소켓 추가 - Rifle_AK47_Holster

소켓 추가 - Rifle_AK47_RightHand

소켓 추가 - Rifle_AK47_LeftHand

CHelper - CreateComponent에서 SocketName 사용할 수 있도록 수정

CHelper.h

class U2212_04_API CHelpers
{
public:
	//변경 전
    	template<typename T>
	static void CreateComponent(AActor* InActor, T** OutComponent, FName InName, USceneComponent* InParent = nullptr)
	{
		*OutComponent = InActor->CreateDefaultSubobject<T>(InName);

		if (!!InParent)
		{
			(*OutComponent)->SetupAttachment(InParent);
            
			return;
		}

		InActor->SetRootComponent(*OutComponent);
	}

	//변경 후 //부모로 사용할 소켓네임 추가 FName InSocketName = NAME_None
	template<typename T>
	static void CreateComponent(AActor* InActor, T** OutComponent, FName InName, USceneComponent* InParent = nullptr, FName InSocketName = NAME_None)
	{
		*OutComponent = InActor->CreateDefaultSubobject<T>(InName);

		if (!!InParent)
		{
			(*OutComponent)->SetupAttachment(InParent, InSocketName); //이렇게 사용하면 Socket Name에 _를 사용하면 안 된다.

			return;
		}

		InActor->SetRootComponent(*OutComponent);
	}
}

CreateComponent에서 SocketName 사용할 수 있도록 수정한다.

CPlayer

CPlayer.h

#pragma once
#include "CoreMinimal.h"
#include "GameFramework/Character.h"
#include "CPlayer.generated.h"

UCLASS()
class U2212_04_API ACPlayer : public ACharacter
{
	GENERATED_BODY()

private:
	UPROPERTY(EditDefaultsOnly, Category = "Camera")
		FVector2D PitchRange = FVector2D(-40, +40);

private:
	UPROPERTY(VisibleAnywhere)
		class USpringArmComponent* SpringArm;

	UPROPERTY(VisibleAnywhere)
		class UCameraComponent* Camera;

	UPROPERTY(VisibleAnywhere)
		class UStaticMeshComponent* Backpack;

private:
	UPROPERTY(VisibleAnywhere)
		class UCWeaponComponent* Weapon;

public:
	ACPlayer();

protected:
	virtual void BeginPlay() override;

public:	
	virtual void Tick(float DeltaTime) override;
	virtual void SetupPlayerInputComponent(class UInputComponent* PlayerInputComponent) override;

private:
	void OnMoveForward(float InAxisValue);
	void OnMoveRight(float InAxisValue);
	void OnHorizontalLook(float InAxisValue);
	void OnVerticalLook(float InAxisValue);

private:
	void OnRun();
	void OffRun();
};

Player에 가방을 추가한다.

class UStaticMeshComponent* Backpack;

CPlayer.cpp

#include "CPlayer.h"
#include "Global.h"
#include "CAnimInstance.h"
#include "Weapons/CWeaponComponent.h"
#include "GameFramework/SpringArmComponent.h"
#include "GameFramework/CharacterMovementComponent.h"
#include "Camera/CameraComponent.h"
#include "Components/CapsuleComponent.h"
#include "Components/InputComponent.h"
#include "Components/StaticMeshComponent.h"
#include "Materials/MaterialInstanceDynamic.h"

ACPlayer::ACPlayer()
{
	...

	UStaticMesh* staticMesh;
	CHelpers::GetAsset<UStaticMesh>(&staticMesh, "StaticMesh'/Game/FPS_Weapon_Bundle/Backpack/Backpack.Backpack'");
	Backpack->SetStaticMesh(staticMesh);
	Backpack->SetCollisionProfileName("NoCollision");
}

void ACPlayer::BeginPlay() { }

void ACPlayer::Tick(float DeltaTime) { }

void ACPlayer::SetupPlayerInputComponent(UInputComponent* PlayerInputComponent)
{
	Super::SetupPlayerInputComponent(PlayerInputComponent);

	...
	PlayerInputComponent->BindAction("AK47", EInputEvent::IE_Pressed, Weapon, &UCWeaponComponent::SetAK47Mode);//Object를 Weapon으로 받는다.

}

void ACPlayer::OnMoveForward(float InAxisValue) { }

void ACPlayer::OnMoveRight(float InAxisValue) { }

void ACPlayer::OnHorizontalLook(float InAxisValue) { }

void ACPlayer::OnVerticalLook(float InAxisValue) { }

void ACPlayer::OnRun() { }

void ACPlayer::OffRun() { }

가방 정보 추가

Mixamo

Mixamo에서 Animation 다운로드

Character - Y bot 다운로드

Character - Grab Rifle from The Side를 Mirror 체크하고 다운로드 (왼팔 모션이 필요해서 Mirror 체크)

Mixamo Animation Retargeting 플러그인 설치

Mixamo Animation 불러오기

스켈레톤을 가지고 있는 Y bot을 먼저 임포트 해준다.

T0는 T-pose이다. T-pose인 것들을 가져올 때는 'Use T0 Ref Pose'를 체크해준다.

애니메이션 추가 - Grab Rifle from The Side

Y_Bot_Skeleton

릭 선택: Hummanoid

Y_Bot_Skeleton 우클릭 - Retarget Mixamo Skeleton Asset

Skel_Mannequin 선택

Y_Bot_Skeleton에서 포즈 보기, 포즈 숨김으로 리타겟이 잘 되었는지 확인한다.

원하는 애니메이션 리타겟팅

우클릭 - 애님 에셋 리타깃 - 애님에셋 복제후 리타겟

애니메이션 생성 완료.

Character - Animation - Rifle 폴더에 옮겨준다.
Rifle_Equip_AK47로 이름 변경.

Rifle_Equip_AK_Montage 생성

몽타주 설정

UpperBody
노티파이 추가: Equip
커브 생성: LeftHand - 키값 주기

AK47 장착 및 해제

CWeapon_AK47 생성

CWeapon 파생 C++ 클래스 생성 - CWeapon_AK47 생성

CWeapon_AK47.h

#pragma once

#include "CoreMinimal.h"
#include "Weapons/CWeapon.h"
#include "CWeapon_AK47.generated.h"

UCLASS()
class U2212_04_API ACWeapon_AK47 : public ACWeapon
{
	GENERATED_BODY()

private:
	UPROPERTY(EditDefaultsOnly, Category = "Equip")
		FName LeftHandSocketName;

public:
	ACWeapon_AK47();

public:
	void Begin_Equip() override;
	void End_Equip() override;
};

변수 생성

왼손 장착을 위해 왼손 SockName의 변수를 생성한다.
FName LeftHandSocketName;

부모의 함수 재정의 (부모인 CWeapon 클래스에서 virtual로 만든 함수를 자식 클래스인 CWeapon_AK47에서 재정의한다.)

void Begin_Equip() override
void End_Equip() overide

CWeapon_AK47.cpp

#include "Weapons/CWeapon_AK47.h"
#include "Global.h"
#include "CMagazine.h"
#include "Character/CPlayer.h" 
#include "Components/SkeletalMeshComponent.h"
#include "Animation/AnimMontage.h"
#include "Camera/CameraShake.h"
#include "Widgets/CUserWidget_CrossHair.h"

ACWeapon_AK47::ACWeapon_AK47()
{
	USkeletalMesh* mesh;
	CHelpers::GetAsset<USkeletalMesh>(&mesh, "SkeletalMesh'/Game/FPS_Weapon_Bundle/Weapons/Meshes/AR4/SK_AR4.SK_AR4'");
	Mesh->SetSkeletalMesh(mesh);

	//AK
	{
		LeftHandSocketName = "Rifle_AK47_LeftHand";
	}

	//Equip
	{
		HolsterSocketName = "Rifle_AK47_Holster";
		CHelpers::GetAsset<UAnimMontage>(&EquipMontage, "AnimMontage'/Game/Character/Animations/Rifle_Equip_AK47_Montage.Rifle_Equip_AK47_Montage'");
		EquipMontage_PlayRate = 2.0f;
		RightHandSocketName = "Rifle_AK47_RightHand";
		LeftHandLocation = FVector(-35, 15.5f, 7);
	}

	//Aim
	{
		BaseData.bEnableCameraLag = true;
		BaseData.TargetArmLength = 200;
		BaseData.SocketOffset = FVector(0, 50, 15);
		BaseData.FieldOfView = 90;

		AimData.bEnableCameraLag = false;
		AimData.TargetArmLength = 30;
		AimData.SocketOffset = FVector(-55, 0, 10);
		AimData.FieldOfView = 55;
	}

	//Fire
	{
		RecoilAngle = 0.75f;
		CHelpers::GetClass<UMatineeCameraShake>(&CameraShakeClass, "Blueprint'/Game/Weapons/BP_CameraShake_AR4.BP_CameraShake_AR4_C'");
		AutoFireInterval = 0.1f; //연사 시간간격(=연사 속도)
		RecoilRate = 0.05f;
		SpreadSpeed = 2.0f;
		MaxSpreadAlignment = 2.0f;
	}

	//UI
	{
		CHelpers::GetClass<UCUserWidget_CrossHair>(&CrossHairClass, "WidgetBlueprint'/Game/Widgets/WB_CrossHair.WB_CrossHair_C'");
	}

	//Magazine
	{
		MaxMagazineCount = 30; //최대 탄 수 = 30으로 설정
		CHelpers::GetAsset<UAnimMontage>(&ReloadMontage, "AnimMontage'/Game/Character/Animations/Rifle_Reload_Montage.Rifle_Reload_Montage'");
		ReloadMontage_PlayRate = 1.5f;
		MagazineBoneName = "b_gun_mag";
		CHelpers::GetClass<ACMagazine>(&MagazineClass, "Blueprint'/Game/Weapons/BP_CMagazine_AK47.BP_CMagazine_AK47_C'");
		MagazineSocketName = "Rifle_Magazine";
	}

}

void ACWeapon_AK47::Begin_Equip()
{
	if (LeftHandSocketName.IsValid())
		CHelpers::AttachTo(this, Owner->GetMesh(), LeftHandSocketName);//AK47(=this)이 Owner->GetMesh()의 LeftHandSockName으로 붙는다.
}

void ACWeapon_AK47::End_Equip()
{
	Super::Begin_Equip(); //부모 Begin_Equip()이 콜 되어 오른손으로 간다.
	Super::End_Equip(); //부모 End_Equip()이 콜 되어 마무리된다.
}

AK 기본값을 설정한다.

.LeftHandSocketName = "Rifle_AK47_LeftHannnd";

함수 정의

void ACWeapon_AK47::Begin_Equip() {
if (LeftHandSocketName.IsValid())
CHelpers::AttachTo(this, Owner->GetMesh(), LeftHandSocketName); }
void ACWeapon_AK47::End_Equip() {
Super::Begin_Equip();
Super::End_Equip(); }

기반 블루프린트 생성 - BP_CWeapon_AK47 생성

BP_CWeapon_AK47

CWeapon

CWeapon.h

#pragma once
#include "CoreMinimal.h"
#include "GameFramework/Actor.h"
#include "CWeapon.generated.h"

//직렬화 해야하는 struct는 클래스 사이에 선언해야 한다.
USTRUCT()
struct FWeaponAimData
{
	GENERATED_BODY()

public:
	UPROPERTY(EditAnywhere)
		float TargetArmLength;

	UPROPERTY(EditAnywhere)
		FVector SocketOffset;

	UPROPERTY(EditAnywhere)
		float FieldOfView;

	UPROPERTY(EditAnywhere)
		bool bEnableCameraLag;

public:
	void SetData(class ACharacter* InOwner);
	void SetDataByNoneCurve(class ACharacter* InOwner);

};

//abstract를 쓰면 Unreal Editor에서 추상 베이스 클래스로 취급하겠다는 의미. 추상이되면 배치시킬 수 없다.
UCLASS(abstract) 
class U2212_04_API ACWeapon : public AActor
{
	GENERATED_BODY()


protected:
	UPROPERTY(EditDefaultsOnly, Category = "Equip")
		FName HolsterSocketName;

	UPROPERTY(EditDefaultsOnly, Category = "Equip")
		class UAnimMontage* EquipMontage;

	UPROPERTY(EditDefaultsOnly, Category = "Equip")
		float EquipMontage_PlayRate;

	UPROPERTY(EditDefaultsOnly, Category = "Equip")
		FName RightHandSocketName;

	UPROPERTY(EditDefaultsOnly, Category = "Equip")
		FVector LeftHandLocation;

protected:
	UPROPERTY(EditDefaultsOnly, Category = "Aim")
		FWeaponAimData BaseData;

	UPROPERTY(EditDefaultsOnly, Category = "Aim")
		FWeaponAimData AimData;

	UPROPERTY(EditDefaultsOnly, Category = "Aim")
		class UCurveFloat* AimCurve;

	UPROPERTY(EditDefaultsOnly, Category = "Aim")
		float AimingSpeed = 200;

protected:
	UPROPERTY(EditDefaultsOnly, Category = "Hit")
		float HitDistance = 3000;

	UPROPERTY(EditDefaultsOnly, Category = "Hit")
		class UMaterialInstanceConstant* HitDecal;

	UPROPERTY(EditDefaultsOnly, Category = "Hit")
		class UParticleSystem* HitParticle;

protected:
	UPROPERTY(EditDefaultsOnly, Category = "Fire")
		class UParticleSystem* FlashParticle;

	UPROPERTY(EditDefaultsOnly, Category = "Fire")
		class UParticleSystem* EjectParticle;

	UPROPERTY(EditDefaultsOnly, Category = "Fire")
		class USoundWave* FireSound;

	UPROPERTY(EditDefaultsOnly, Category = "Fire")
		float RecoilAngle; //Cone의 각도

	UPROPERTY(EditDefaultsOnly, Category = "Fire")
		TSubclassOf<class UMatineeCameraShake> CameraShakeClass;

	UPROPERTY(EditDefaultsOnly, Category = "Fire")
		float AutoFireInterval; //연사 시간간격

	UPROPERTY(EditDefaultsOnly, Category = "Fire")
		float RecoilRate; //반동률

	UPROPERTY(EditDefaultsOnly, Category = "Fire")
		float SpreadSpeed; //얼마나 빨리 벌려질거냐

	UPROPERTY(EditDefaultsOnly, Category = "Fire")
		float MaxSpreadAlignment; //얼마나 넓게 벌려질거냐

	UPROPERTY(EditDefaultsOnly, Category = "Fire")
		TSubclassOf<class ACBullet> BulletClass;

protected:
	UPROPERTY(EditDefaultsOnly, Category = "UI")
		TSubclassOf<class UCUserWidget_CrossHair> CrossHairClass; //CrossHair

protected:
	UPROPERTY(EditDefaultsOnly, Category = "Magazine")
		uint8 MaxMagazineCount;

	UPROPERTY(EditDefaultsOnly, Category = "Magazine")
		class UAnimMontage* ReloadMontage;

	UPROPERTY(EditDefaultsOnly, Category = "Magazine")
		float ReloadMontage_PlayRate;

	UPROPERTY(EditDefaultsOnly, Category = "Magazine")
		FName MagazineBoneName; //탄창이 숨겨졌다 보이게 바뀌는 BoneName

	UPROPERTY(EditDefaultsOnly, Category = "Magazine")
		TSubclassOf<class ACMagazine> MagazineClass;

	UPROPERTY(EditDefaultsOnly, Category = "Magazine")
		FName MagazineSocketName;

private:
	UPROPERTY(VisibleAnywhere)
		class USceneComponent* Root;

protected:
	UPROPERTY(VisibleAnywhere)
		class USkeletalMeshComponent* Mesh;

private:
	UPROPERTY(VisibleAnywhere)
		class UTimelineComponent* Timeline;

public:
	FORCEINLINE bool IsInAim() { return bInAim; }
	FORCEINLINE bool IsAutoFire() { return bAutoFire; }
	FORCEINLINE FVector GetLeftHandLocation() { return LeftHandLocation; }

	FORCEINLINE uint8 GetCurrMagazineCount() { return CurrMagazineCount; } //현재 탄 수
	FORCEINLINE uint8 GetMaxMagazineCount() { return MaxMagazineCount; } //최대 탄 수

public:	
	ACWeapon();

protected:
	virtual void BeginPlay() override;

public:	
	virtual void Tick(float DeltaTime) override;

public:
	bool CanEquip();
	void Equip();
	virtual void Begin_Equip();
	virtual void End_Equip();

	bool CanUnequip();
	void Unequip();

public:
	bool CanAim();
	void Begin_Aim();
	void End_Aim();

private:
	UFUNCTION()
		void OnAiming(float Output); //조준

public:
	bool CanFire();
	void Begin_Fire();
	void End_Fire();

private:
	UFUNCTION()
		void OnFiring(); //연사

public:
	void ToggleAutoFire(); //연사 On Off 토글

public:
	bool CanReload();
	void Reload();
	
	void Eject_Magazine();
	void Spawn_Magazine();
	void Load_Magazine();
	void End_Reload();

private:
	bool bEquipping;
	bool bInAim;
	bool bFiring;
	bool bReload;
	bool bAutoFire = true;

protected:
	class ACPlayer* Owner;

private:
	FTimerHandle AutoFireHandle; //타이머 핸들 추가

private:
	class UCUserWidget_CrossHair* CrossHair;

private:
	float CurrSpreadRadius;
	float LastAddSpreadTime; 

private:
	uint8 CurrMagazineCount; //현재 탄 수

private:
	class ACMagazine* Magazine;
};

자식 클래스에서 Begin_Equip과 End_Equip이 재정의 되도록 virtual 가상함수로 수정한다.

void Begin_Equip(); → 변경 virtual void Begin_Equip();
void End_Equip(); → 변경 virtual void End_Equip();

접근 권한 변경

private: class ACPlayer* Owner; →변경 protected: class ACPlayer* Owner;
변수 Owner를 자식 클래스인 CWeapon_AK47에서 사용할 수 있도록 private을 protected로 변경한다.

CWeapon.cpp

#include "Weapons/CWeapon.h"
#include "Global.h"
#include "CBullet.h"
#include "CMagazine.h"
#include "Character/CPlayer.h"
#include "Components/SkeletalMeshComponent.h"
#include "Components/TimelineComponent.h"
#include "Components/DecalComponent.h"
#include "GameFramework/SpringArmComponent.h"
#include "Camera/CameraComponent.h"
#include "Camera/CameraShake.h"
#include "Materials/MaterialInstanceConstant.h"
#include "Particles/ParticleSystem.h"
#include "Widgets/CUserWidget_CrossHair.h"

void FWeaponAimData::SetData(ACharacter* InOwner)
{
	USpringArmComponent* springArm = CHelpers::GetComponent<USpringArmComponent>(InOwner);
	springArm->TargetArmLength = TargetArmLength;
	springArm->SocketOffset = SocketOffset;
	springArm->bEnableCameraLag = bEnableCameraLag;
}

void FWeaponAimData::SetDataByNoneCurve(ACharacter* InOwner)
{
	USpringArmComponent* springArm = CHelpers::GetComponent<USpringArmComponent>(InOwner);
	springArm->TargetArmLength = TargetArmLength;
	springArm->SocketOffset = SocketOffset;
	springArm->bEnableCameraLag = bEnableCameraLag;

	UCameraComponent* camera = CHelpers::GetComponent<UCameraComponent>(InOwner);
	camera->FieldOfView = FieldOfView; //curve를 이용하여 FieldOfView를 만들어준다. 
}

///////////////////////////////////////////////////////////////////////////////

ACWeapon::ACWeapon()
{
	PrimaryActorTick.bCanEverTick = true;

	CHelpers::CreateComponent<USceneComponent>(this, &Root, "Root");
	CHelpers::CreateComponent<USkeletalMeshComponent>(this, &Mesh, "Mesh", Root);

	CHelpers::CreateActorComponent<UTimelineComponent>(this, &Timeline, "Timeline");
	//CurveFloat 
	CHelpers::GetAsset<UCurveFloat>(&AimCurve, "CurveFloat'/Game/Character/Weapons/Curve_Aim.Curve_Aim'");

	CHelpers::GetAsset<UMaterialInstanceConstant>(&HitDecal, "MaterialInstanceConstant'/Game/Materials/M_Decal_Inst.M_Decal_Inst'");
	CHelpers::GetAsset<UParticleSystem>(&HitParticle, "ParticleSystem'/Game/Effects/P_Impact_Default.P_Impact_Default'");

	CHelpers::GetAsset<UParticleSystem>(&FlashParticle, "ParticleSystem'/Game/Effects/P_Muzzleflash.P_Muzzleflash'");
	CHelpers::GetAsset<UParticleSystem>(&EjectParticle, "ParticleSystem'/Game/Effects/P_Eject_bullet.P_Eject_bullet'");
	CHelpers::GetAsset<USoundWave>(&FireSound, "SoundWave'/Game/Sounds/S_RifleShoot.S_RifleShoot'");
	CHelpers::GetClass<ACBullet>(&BulletClass, "Blueprint'/Game/Weapons/BP_CBullet.BP_CBullet_C'");
}

void ACWeapon::BeginPlay()
{
	Super::BeginPlay();

	Owner = Cast<ACPlayer>(GetOwner());

	if (HolsterSocketName.IsValid())
		CHelpers::AttachTo(this, Owner->GetMesh(), HolsterSocketName);

	BaseData.SetDataByNoneCurve(Owner);

	if(!!AimCurve)
	{
		FOnTimelineFloat timeline;
		timeline.BindUFunction(this, "OnAiming");

		Timeline->AddInterpFloat(AimCurve, timeline); //이벤트 객체를 다룸.
		Timeline->SetLooping(false);
		Timeline->SetPlayRate(AimingSpeed);
	}

	if(!!CrossHairClass)
	{
		CrossHair = CreateWidget<UCUserWidget_CrossHair, APlayerController>(Owner->GetController<APlayerController>(), CrossHairClass);
		CrossHair->AddToViewport();
		CrossHair->SetVisibility(ESlateVisibility::Hidden);
		CrossHair->UpdateSpreadRange(CurrSpreadRadius, MaxSpreadAlignment);
	}

	CurrMagazineCount = MaxMagazineCount; //현재 탄 수 = 최대 탄 수로 설정하고 시작.
}

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

	if(LastAddSpreadTime >= 0.0f) //쏘고 있었다면
	{
		if(GetWorld()->GetTimeSeconds() - LastAddSpreadTime >= AutoFireInterval + 0.25f)
		{
			CurrSpreadRadius = 0.0f;  //CrossHair 현재값 
			LastAddSpreadTime = 0.0f; //마지막으로 추가한 시간

			if (!!CrossHair)
				CrossHair->UpdateSpreadRange(CurrSpreadRadius, MaxSpreadAlignment);
		} //if
	}

}

bool ACWeapon::CanEquip()
{
	bool b = false;
	//3개 다 false일 때 b = false
	//3개 중 하나라도 true면 b = true
	b |= bEquipping;
	b |= bReload;
	b |= bFiring;

	return !b; //b = false일 때 True를 리턴
}

void ACWeapon::Equip()
{
	bEquipping = true;

	if (!!EquipMontage)
		Owner->PlayAnimMontage(EquipMontage, EquipMontage_PlayRate);
}

void ACWeapon::Begin_Equip()
{
	if (RightHandSocketName.IsValid())
		CHelpers::AttachTo(this, Owner->GetMesh(), RightHandSocketName);
}

void ACWeapon::End_Equip()
{
	bEquipping = false;

	if (!!CrossHair)
		CrossHair->SetVisibility(ESlateVisibility::Visible);
}

bool ACWeapon::CanUnequip()
{
	bool b = false;
	b |= bEquipping;
	b |= bReload;
	b |= bFiring;

	return !b;
}

void ACWeapon::Unequip()
{
	if (HolsterSocketName.IsValid())
		CHelpers::AttachTo(this, Owner->GetMesh(), HolsterSocketName);

	if (!!CrossHair) //무기해제 시 CrossHair가 있으면
		CrossHair->SetVisibility(ESlateVisibility::Hidden);//CrossHair 꺼줌
}

bool ACWeapon::CanAim()
{
	bool b = false;
	b |= bEquipping;
	b |= bReload;
	b |= bInAim;

	return !b;
}

void ACWeapon::Begin_Aim()
{
	bInAim = true;

	//우리는 생성자 ACWeapon()에서 AimCurve를 가져왔다.
	if (!!AimCurve) //AimCurve가 있으면 true, 없으면 nullptr이기 때문에 false
	{
		Timeline->PlayFromStart();
		AimData.SetData(Owner);

		return;
	}

	AimData.SetDataByNoneCurve(Owner);
}

void ACWeapon::End_Aim()
{
	CheckFalse(bInAim);
	bInAim = false;

	if (!!AimCurve)
	{
		Timeline->ReverseFromEnd();
		BaseData.SetData(Owner);

		return;
	}

	BaseData.SetDataByNoneCurve(Owner);

}

void ACWeapon::OnAiming(float Output)
{
	UCameraComponent* camera = CHelpers::GetComponent<UCameraComponent>(Owner);
	camera->FieldOfView = FMath::Lerp(AimData.FieldOfView, BaseData.FieldOfView, Output);
}

bool ACWeapon::CanFire()
{
	bool b = false;
	b |= bEquipping;
	b |= bReload;
	b |= bFiring; //발사하고 있는지

	return !b;
}

void ACWeapon::Begin_Fire()
{
	bFiring = true;

	if(bAutoFire)
	{
		GetWorld()->GetTimerManager().SetTimer(AutoFireHandle, this, &ACWeapon::OnFiring, AutoFireInterval, true, 0);

		return;
	}

	OnFiring();
}

void ACWeapon::End_Fire()
{
	CheckFalse(bFiring);

	if(GetWorld()->GetTimerManager().IsTimerActive(AutoFireHandle))//AutoFireHandle이 활성화 있다면
	{
		GetWorld()->GetTimerManager().ClearTimer(AutoFireHandle);//AutoFireHandle 해제
	}

	bFiring = false;
}

void ACWeapon::OnFiring()
{
	UCameraComponent* camera = CHelpers::GetComponent<UCameraComponent>(Owner);
	FVector direction = camera->GetForwardVector();
	FTransform transform = camera->GetComponentToWorld();

	FVector start = transform.GetLocation() + direction; //눈알 안보다 앞쪽으로 설정하기 때문에 쏘는 방향쪽으로 조금 더해준다.

	// Cone 모양의 탄착군 형성. 나갈방향(direction). 몇 도로 만들것인가(RecoilAngle). CWeapon_AR4에서 RecoilAngle의 Default값을 설정하였다.
	direction = UKismetMathLibrary::RandomUnitVectorInConeInDegrees(direction, RecoilAngle);
	FVector end = transform.GetLocation() + direction * HitDistance;

	//DrawDebugLine(GetWorld(), start, end, FColor::Red, true, 5);

	TArray<AActor*> ignores;

	FHitResult hitResult;
	UKismetSystemLibrary::LineTraceSingle(GetWorld(), start, end, ETraceTypeQuery::TraceTypeQuery1, false, ignores, EDrawDebugTrace::None, hitResult,true);

	if(hitResult.bBlockingHit) //발사한 LineTrace가 Object에 맞아 Block 충돌이 되었다면
	{
		if (!!HitDecal)
		{
			FRotator rotator = hitResult.ImpactNormal.Rotation(); //HitDecal이 붙을 방향(rotator) = 충돌된 곳의 Normal 방향

			UDecalComponent* decal = UGameplayStatics::SpawnDecalAtLocation(GetWorld(), HitDecal, FVector(5), hitResult.Location, rotator, 10);
			decal->SetFadeScreenSize(0);
		}

		if(!!HitParticle)
		{
			//hit된 지점으로부터 최초로 쏜 지점(=나)을 향하도록 설정.
			FRotator rotator = UKismetMathLibrary::FindLookAtRotation(hitResult.Location, hitResult.TraceStart);

			//Particle이 충돌위치에서 쏜 위치를 향햐도록 나옴.
			UGameplayStatics::SpawnEmitterAtLocation(GetWorld(), HitParticle, hitResult.Location, rotator);
		}
	}

	if (!!FlashParticle) //Muzzle에서 나오는 FlashParticle
		UGameplayStatics::SpawnEmitterAttached(FlashParticle, Mesh, "Muzzle", FVector::ZeroVector, FRotator::ZeroRotator, EAttachLocation::KeepRelativeOffset);


	if (!!EjectParticle) //Eject에서 나오는 EjectParticle. 탄피.
		UGameplayStatics::SpawnEmitterAttached(EjectParticle, Mesh, "Eject", FVector::ZeroVector, FRotator::ZeroRotator, EAttachLocation::KeepRelativeOffset);

	//muzzleLocation 변수를 소켓으로 만든 muzzle 위치로 잡아준다.
	FVector muzzleLocation = Mesh->GetSocketLocation("Muzzle");

	if (!!FireSound)
		UGameplayStatics::SpawnSoundAtLocation(GetWorld(), FireSound, muzzleLocation);

	if(!!CameraShakeClass)
	{
		//PlayerCameraManager는 PlayerController에 있으므로 PlayerController를 가져온다.
		APlayerController* controller = Owner->GetController<APlayerController>();

		if (!!controller)
			controller->PlayerCameraManager->StartCameraShake(CameraShakeClass);
	}

	Owner->AddControllerPitchInput(-RecoilRate * UKismetMathLibrary::RandomFloatInRange(0.8f, 1.2f));

	if (CurrSpreadRadius <= 1.0f)
	{
		//쏘는 동안 계속 CrossHair의 크기를 가산한다.
		CurrSpreadRadius += SpreadSpeed * GetWorld()->GetDeltaSeconds();

		if (!!CrossHair)
			CrossHair->UpdateSpreadRange(CurrSpreadRadius, MaxSpreadAlignment);
	}
	LastAddSpreadTime = GetWorld()->GetTimeSeconds(); //마지막 시간을 저장. Tick에서 이 값을 사용한다.

	if(!!BulletClass)
	{
		FVector location = Mesh->GetSocketLocation("Muzzle_Bullet");

		FActorSpawnParameters params;
		params.SpawnCollisionHandlingOverride = ESpawnActorCollisionHandlingMethod::AlwaysSpawn;

		//Bullet을 Spawn시킨다.
		ACBullet* bullet = GetWorld()->SpawnActor<ACBullet>(BulletClass, location, direction.Rotation(), params);

		if (!!bullet)
			bullet->Shoot(direction);
	}

	if(CurrMagazineCount >= 1) //쏠 때마다 현재 탄 수를 줄여준다.
	{
		CurrMagazineCount--;
	}
	else
	{
		if (CanReload())
			Reload();
	}

}

void ACWeapon::ToggleAutoFire()
{
	bAutoFire = !bAutoFire;
}

bool ACWeapon::CanReload()
{
	bool b = false;
	b |= bEquipping;
	b |= bReload;

	return !b;
}

void ACWeapon::Reload()
{
	bReload = true;

	End_Aim();
	End_Fire();

	if (!!ReloadMontage) //재장전 몽타주가 있다면
		Owner->PlayAnimMontage(ReloadMontage, ReloadMontage_PlayRate); //몽타주 애니메이션 플레이
}

void ACWeapon::Eject_Magazine()
{
	if (MagazineBoneName.IsValid()) //MagazineBoneName이 있다면. CWeapon_AR4에 MagazineBoneName을 설정했다.
		Mesh->HideBoneByName(MagazineBoneName, EPhysBodyOp::PBO_None); //MagazineBoneName이하를 숨겨준다. 이 때, Physics는 꺼준다.

	CheckNull(MagazineClass);

	FTransform transform = Mesh->GetSocketTransform(MagazineBoneName);
	ACMagazine* magazine = GetWorld()->SpawnActorDeferred<ACMagazine>(MagazineClass, transform, nullptr, nullptr, ESpawnActorCollisionHandlingMethod::AlwaysSpawn);
	magazine->SetEject();
	magazine->SetLifeSpan(5);
	magazine->FinishSpawning(transform);
}

void ACWeapon::Spawn_Magazine()
{
	CheckNull(MagazineClass);

	FActorSpawnParameters params;
	params.SpawnCollisionHandlingOverride = ESpawnActorCollisionHandlingMethod::AlwaysSpawn;

	Magazine = GetWorld()->SpawnActor<ACMagazine>(MagazineClass, params);
	CHelpers::AttachTo(Magazine, Owner->GetMesh(), MagazineSocketName);
}

void ACWeapon::Load_Magazine()
{
	CurrMagazineCount = MaxMagazineCount;

	if (MagazineBoneName.IsValid())
		Mesh->UnHideBoneByName(MagazineBoneName);//재장전 후에 MagazineBoneName이하를 보이게 켜준다.

	if (!!Magazine)
		Magazine->Destroy();
}

void ACWeapon::End_Reload()
{
	bReload = false;  
}

변경사항 없음.

CWeaponComponent

CWeaponComponent.h

#pragma once
#include "CoreMinimal.h"
#include "Components/ActorComponent.h"
#include "CWeaponComponent.generated.h"

//BlueprintType을 써서 BP에서 공개되게 한다. 추후에 Animation BP에서 다루어야 한다. 추후에 switch로 Weapon Blending을 할 것이다.
UENUM(BlueprintType) 
enum class EWeaponType : uint8
{
	AR4, AK47, Pistol, Max,
};

DECLARE_DYNAMIC_MULTICAST_DELEGATE_TwoParams(FWeaponTypeChanged, EWeaponType, InPrevType, EWeaponType, InNewType);


UCLASS( ClassGroup=(Custom), meta=(BlueprintSpawnableComponent) )
class U2212_04_API UCWeaponComponent : public UActorComponent
{
	GENERATED_BODY()

private:
	UPROPERTY(EditAnywhere, Category = "Settings")
		TArray<TSubclassOf<class ACWeapon>> WeaponClasses; //Spawn시킬 때 class 타입을 TSubclassOf로 명시해준다. TArray는 그것에 대한 배열이다.

	UPROPERTY(EditAnywhere, Category = "Settings")
		TSubclassOf<class UCUserWidget_HUD> HUDClass;

public:
	FORCEINLINE bool IsUnarmedMode() { return Type == EWeaponType::Max; }//Max는 아무것도 선택안한 상황.
	FORCEINLINE bool IsAR4Mode() { return Type == EWeaponType::AR4; }
	FORCEINLINE bool IsAK47Mode() { return Type == EWeaponType::AK47; }
	FORCEINLINE bool IsPistolMode() { return Type == EWeaponType::Pistol; }

public:	
	// Sets default values for this component's properties
	UCWeaponComponent();

protected:
	// Called when the game starts
	virtual void BeginPlay() override;

public:	
	// Called every frame
	virtual void TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction) override;

private:
	class ACWeapon* GetCurrWeapon();//현재 무기를 리턴

public:
	void SetUnarmedMode();
	void SetAR4Mode();
	void SetAK47Mode();
	//void SetPistolMode();

private:
	void SetMode(EWeaponType InType);
	void ChangeType(EWeaponType InType);

public:
	void Begin_Equip();
	void End_Equip();

public:
	void Begin_Aim();
	void End_Aim();

public:
	void Begin_Fire();
	void End_Fire();

public:
	bool IsInAim();
	FVector GetLeftHandLocation();

public:
	void ToggleAutoFire(); //연사 토글

public:
	void Reload(); //재장전

	void Eject_Magazine();
	void Spawn_Magazine();
	void Load_Magazine();
	void End_Reload();

public:
	FWeaponTypeChanged OnWeaponTypeChanged;

private:
	EWeaponType Type = EWeaponType::Max; //Max는 아무것도 선택안한 상황.

private:
	class ACPlayer* Owner; //플레이어 변수
	TArray<class ACWeapon*> Weapons; //무기 배열 변수
	class UCUserWidget_HUD* HUD;
};

함수 추가 - 새롭게 만든 AK47 모드 추가

void SetAK47Mode()

CWeaponComponent.cpp

#include "Weapons/CWeaponComponent.h"
#include "Global.h"
#include "CWeapon.h"
#include "Character/CPlayer.h"
#include "Widgets/CUserWidget_HUD.h"

UCWeaponComponent::UCWeaponComponent()
{
	PrimaryComponentTick.bCanEverTick = true;

	CHelpers::GetClass<UCUserWidget_HUD>(&HUDClass, "WidgetBlueprint'/Game/Widgets/WB_HUB.WB_HUB_C'");
}

void UCWeaponComponent::BeginPlay()
{
	Super::BeginPlay();

	Owner = Cast<ACPlayer>(GetOwner());
	CheckNull(Owner);

	FActorSpawnParameters params;
	params.Owner = Owner;
	params.SpawnCollisionHandlingOverride = ESpawnActorCollisionHandlingMethod::AlwaysSpawn;

	//받은 타입을 Spawn 시킨다.
	for(TSubclassOf<ACWeapon> weaponClass : WeaponClasses)
	{
		if(!!weaponClass)
		{
			ACWeapon* weapon = Owner->GetWorld()->SpawnActor<ACWeapon>(weaponClass, params);//weaponClass 타입으로 Spawn시킨다.
			Weapons.Add(weapon);
		}
	}

	if(!!HUDClass)
	{
		HUD = CreateWidget<UCUserWidget_HUD, APlayerController>(Owner->GetController<APlayerController>(), HUDClass);
		HUD->AddToViewport(); //Viewport에 추가
		HUD->SetVisibility(ESlateVisibility::Hidden);//숨김
	}

}

// Called every frame
void UCWeaponComponent::TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction)
{
	Super::TickComponent(DeltaTime, TickType, ThisTickFunction);

	if (!!HUD)
	{
		if (!!GetCurrWeapon()) //현재 무기가 있다면
			GetCurrWeapon()->IsAutoFire() ? HUD->OnAutoFire() : HUD->OffAutoFire(); //연사 3항 연산자 OnOff 스위치
		else //현재 무기가 없다면
			HUD->OffAutoFire(); //연사 해제

		if(!!GetCurrWeapon()) //현재 무기가 있다면
		{
			uint8 currCount = GetCurrWeapon()->GetCurrMagazineCount(); //현재 무기의 현재 탄 수
			uint8 maxCount = GetCurrWeapon()->GetMaxMagazineCount(); //현재 무기의 최대 탄 수

			HUD->UpdateMagazine(currCount, maxCount); //HUD에 탄 수 업데이트
		}
	}

}

ACWeapon* UCWeaponComponent::GetCurrWeapon()
{
	CheckTrueResult(IsUnarmedMode(), nullptr);//IsUnarmedMode가 true면 무기 리턴해줄수 없으므로 nullptr로 리턴 

	return Weapons[(int32)Type]; //BP의 to int //현재 선택된 Weapon을 리턴해준다.
}

void UCWeaponComponent::SetUnarmedMode()
{
	CheckFalse(GetCurrWeapon()->CanUnequip());//현재 무기가 해제될 수 있는지 체크

	GetCurrWeapon()->Unequip(); //무기 해제
	ChangeType(EWeaponType::Max);//현재 무기를 Max로 바꾸어줌(Max는 아무것도 선택안한 상태)

	HUD->SetVisibility(ESlateVisibility::Hidden);//무기가 없을때 화면에서 숨겨준다.
}

void UCWeaponComponent::SetAR4Mode()
{
	SetMode(EWeaponType::AR4);
}

void UCWeaponComponent::SetAK47Mode()
{
	SetMode(EWeaponType::AK47);
}

void UCWeaponComponent::SetMode(EWeaponType InType)
{
	if(Type == InType) //현재 무기와 장착하려는 무기가 같은 경우
	{
		SetUnarmedMode(); //무기 장착 해제

		return; //무기 장착 해제 후 리턴
	}
	else if (IsUnarmedMode() == false)
	{
		CheckFalse(GetCurrWeapon()->CanUnequip());//현재 무기가 해제될 수 있는지 체크

		GetCurrWeapon()->Unequip(); //무기 해제
	}

	CheckNull(Weapons[(int32)InType]); //장착될 무기가 있는지 체크
	CheckFalse(Weapons[(int32)InType]->CanEquip());//장착될 무기가 장착될 수 있는 상황인지 체크

	Weapons[(int32)InType]->Equip(); // 무기 장착

	ChangeType(InType); //무기 변경 알려줌

	if (!!HUD)
		HUD->SetVisibility(ESlateVisibility::Visible);//화면에 보이도록 켜줌.

}

void UCWeaponComponent::ChangeType(EWeaponType InType)
{
	EWeaponType type = Type;
	Type = InType; //기존의 무기 타입에서 바뀐 무기 타입을 넣어줌.

	if (OnWeaponTypeChanged.IsBound())
		OnWeaponTypeChanged.Broadcast(type, InType);//기존 무기 타입, 바뀐 무기 타입
	
}

void UCWeaponComponent::Begin_Equip()
{
	CheckNull(GetCurrWeapon());

	GetCurrWeapon()->Begin_Equip();
}

void UCWeaponComponent::End_Equip()
{
	CheckNull(GetCurrWeapon());

	GetCurrWeapon()->End_Equip();
}

void UCWeaponComponent::Begin_Aim()
{
	CheckNull(GetCurrWeapon());

	GetCurrWeapon()->Begin_Aim();
}

void UCWeaponComponent::End_Aim()  
{
	CheckNull(GetCurrWeapon());

	GetCurrWeapon()->End_Aim();
}

void UCWeaponComponent::Begin_Fire()
{
	CheckNull(GetCurrWeapon());
	CheckFalse(GetCurrWeapon()->CanFire());

	GetCurrWeapon()->Begin_Fire();
}

void UCWeaponComponent::End_Fire()
{
	CheckNull(GetCurrWeapon());

	GetCurrWeapon()->End_Fire();
}

bool UCWeaponComponent::IsInAim()
{
	CheckNullResult(GetCurrWeapon(), false);

	return GetCurrWeapon()->IsInAim();
}

FVector UCWeaponComponent::GetLeftHandLocation()
{
	CheckNullResult(GetCurrWeapon(), FVector::ZeroVector);

	return GetCurrWeapon()->GetLeftHandLocation();
}

void UCWeaponComponent::ToggleAutoFire()
{
	CheckNull(GetCurrWeapon());

	GetCurrWeapon()->ToggleAutoFire();
}

void UCWeaponComponent::Reload()
{
	CheckNull(GetCurrWeapon());

	GetCurrWeapon()->Reload();
}

void UCWeaponComponent::Eject_Magazine()
{
	CheckNull(GetCurrWeapon());

	GetCurrWeapon()->Eject_Magazine();
}

void UCWeaponComponent::Spawn_Magazine()
{
	CheckNull(GetCurrWeapon());

	GetCurrWeapon()->Spawn_Magazine();
}

void UCWeaponComponent::Load_Magazine()
{
	CheckNull(GetCurrWeapon());

	GetCurrWeapon()->Load_Magazine();
}

void UCWeaponComponent::End_Reload()
{
	CheckNull(GetCurrWeapon());

	GetCurrWeapon()->End_Reload();
}

함수 정의

void UCWeaponComponent::SetAK47Mode() { SetMode(EWeaponType::AK47); }

ABP_Player

AK47 포즈 추가

실행화면

ABP: Animation Blueprint
AN: Blueprint Class AnimNotify
ANS: Blueprint Class - AnimNotifyState

AO: Aim Offset

BP: Blueprint Class
BS: Blend Space

BF: Blueprint Function Library
CS: Matinee Camera Shake
E: Enum 열거형
DT: Data Table
F: 구조체

I: Blueprint Interface

WB: Widget Bluepprint

UE2212_04

	Level - LEVEL
Character	Animation	Rifle
		Unarmed
		Rifle_Equip_Montage Rifle_Reload_Montage
	BlendSpaces	AO_Rifle_Aim AO_Rifle_Idle BS_Rifle BS_Rifle_Aim BS_Unarme
	Materials	MaterialLayers
	Materials	M_UE4Man_Body M_UE4Man_ChestLogo
	Mesh	SK_Mannequin SK_MAnnequin_PhysicsAsset Skel_Mannequin

	Textures	UE4_LOGO_CARD UE4_Mannequin__normals UE4_Mannequin_MAT_MASKA UE4Man_Logo_N
	Weapons	Elven Bow
		Greate Hammer
		Sword
Effects	Materials
	Meshes
	Texture
	P_Eject_bullet P_Impact_Default P_Muzzleflash
Environment	Materials	Textures
	Meshes
	Obstacle
FPS_Weapon_Bundle	Backpack	backpact M_Backpack
	Weapons	Material
		Meshes
		Textures
	SM_AR4_Mag SM_AR4_Mag_Empty
Materials	Texture
Materials	M_Cursor M_Cursor_Inst M_Decal M_Mesh M_White_Inst M_Red_Inst M_Green_Inst M_Blue_Inst M_UE4Man_Body_Inst M_UE4Man_ChesLogo_Inst
Meshes	Cone_2 Cube_2 Cylinder_2 Sphere_2
Player	ABP_Player BP_Player
Sounds	S_RifleShoot
Textures	Crosshair
Weapons	BP_CameraShake_AR4 BP_CBullet BP_CMagazine_AK47 BP_CMagazine_AR4 BP_CWeapon_AK47 BP_CWeapon_AR4
Weapons
Widgets	NotoSansKR-Black NotoSansKR-Black_Font WB_CrossHair WB_HUB

'⭐ Unreal Engine > UE FPS TPS' 카테고리의 다른 글

[UE] FPS, Pistol (0)	2023.03.31
[UE] FPS(일인칭 슈팅 게임) (0)	2023.03.30
[UE] 재장전(탄창 생성 및 제거) (0)	2023.03.28
[UE] 총알 & 재장전 구현. Bullet, Magazine, Reload (0)	2023.03.27
[UE] 총알 연사, HUD & CrossHair (0)	2023.03.23

[UE] Mixamo, 무기 추가(AK47)

가방 추가, 무기(AK47) 추가

BP_CMagazine_AK47

SK_AK47_Skeleton에 소켓 추가

Skel_Mannequin에 소켓 추가

CHelper - CreateComponent에서 SocketName 사용할 수 있도록 수정

CPlayer

Mixamo

Mixamo에서 Animation 다운로드

Mixamo Animation Retargeting 플러그인 설치

Mixamo Animation 불러오기

Rifle_Equip_AK_Montage 생성

AK47 장착 및 해제

CWeapon_AK47 생성

CWeapon

CWeaponComponent

ABP_Player

실행화면

'⭐ Unreal Engine > UE FPS TPS' 카테고리의 다른 글

댓글

이 글 공유하기

티스토리툴바

가방 추가, 무기(AK47) 추가

BP_CMagazine_AK47

SK_AK47_Skeleton에 소켓 추가

Skel_Mannequin에 소켓 추가

CHelper - CreateComponent에서 SocketName 사용할 수 있도록 수정

CPlayer

Mixamo

Mixamo에서 Animation 다운로드

Mixamo Animation Retargeting 플러그인 설치

Mixamo Animation 불러오기

Rifle_Equip_AK_Montage 생성

AK47 장착 및 해제

CWeapon_AK47 생성

CWeapon

CWeaponComponent

ABP_Player

실행화면

'⭐ Unreal Engine > UE FPS TPS' 카테고리의 다른 글

댓글

이 글 공유하기

다른 글

[UE] FPS, Pistol

[UE] FPS(일인칭 슈팅 게임)

[UE] 재장전(탄창 생성 및 제거)

[UE] 총알 & 재장전 구현. Bullet, Magazine, Reload

티스토리툴바