[UE GAS] 아이템 상자 구현

장식이펙트와 아이템 상자의 구현 

• 장식 이펙트를 담당하는 게임플레이 큐의 활용방법의 학습
• 기간형 게임플레이 이펙트를 활용한 다양한 아이템 상자의 구현
• GAS의다양한 API를 활용한 무기에 관련된 게임플레이 이벤트와 어트리뷰트의 설정   

 

 

 

목차

 

 

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기획

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게임플레이 이펙트를 활용한 아이템과 무기 기획

 

• 데미지, 회복상자의 구현
• 체력 레젠(Regeneration) 상자, DOT(Damage over time) 상자의 구현
• 캐릭터에 무기 추가 
  • 무기로 인한 공격 범위 증가: 75
  • 무기로 인한 공격력 증가: 100

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핵심 컴포넌트

 

 

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Gameplay Cue를 활용한 캐릭터 피격 이펙트 구현  

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게임플레이 큐 Gameplay Cue

 

Gameplay Cue

• 시각 이펙트나 사운드와 같은 게임 로직과 무관한 시각적, 청각적 기능을 담당함
• Client부분에만 사용하고 Dedicated Server에서는 사용할 필요가 없음
• 두 종류의 Gameplay Queue가 있음
  • Static Gameplay Cue :  일시적으로 발생하는 특수효과 사용. Execute 이벤트 발동.
  • Actor Gameplay Queue :  일정 기간동안 발생하는 특수효과에 사용. Add/Remove 이벤트 발동.
• C++로도 구현할수 있지만, Blueprint로 제작하는 것이 더 생산적임.
• GameplayEffect(GE)에서 자동으로 GamplayCue(GC)와 연동할수 있도록 기능을 제공하고 있음.
• Gameplay Queue의 재생은 GameplayCueManager가 관리함. ( 다른 시스템과 분리된 구조)
• Gameplay Tag를 사용해 쉽게 발동시킬 수 있음
  • 이 때 반드시 GameplayCue로시작하는 Gameplay Tag를 사용해야 함.   

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GameplayCue에 쓸 GameplayTags 지정하기

 

Project Settings - GameplayTags - Gameplay Tag List

• GameplayCue.Character.AttackHit :  캐릭터에 맞았을 때 발동하는 특수효과를 의미하는 태그
• GameplayCue.Character.Damage :  캐릭터가 맞았을 때 들어가는 데미지를 의미하는 태그  
• GameplayCue.Chest.Open :  를 의미하는 태그  

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ABGC_AttackHit 생성

 

캐릭터를 공격해서 명중했을때 이펙트가 터지는 이펙트

 

GameplayCueNotify_Static - GC_ABGC_AttackHit 생성

 

 

ABGC_AttackHit.h

#pragma once
#include "CoreMinimal.h"
#include "GameplayCueNotify_Static.h"
#include "ABGC_AttackHit.generated.h"
 
UCLASS()
class ARENABATTLEGAS_API UABGC_AttackHit : public UGameplayCueNotify_Static
{
	GENERATED_BODY()
	
public:
	UABGC_AttackHit();
 
	virtual bool OnExecute_Implementation(AActor* Target, const FGameplayCueParameters& Parameters) const override;
 
protected:
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=GameplayCue)
	TObjectPtr<class UParticleSystem> ParticleSystem;
};

 

 

ABGC_AttackHit.cpp

#include "GC/ABGC_AttackHit.h"
#include "Particles/ParticleSystem.h"
#include "Kismet/GameplayStatics.h"
 
UABGC_AttackHit::UABGC_AttackHit()
{
	static ConstructorHelpers::FObjectFinder<UParticleSystem> ExplosionRef(TEXT("/Script/Engine.ParticleSystem'/Game/StarterContent/Particles/P_Explosion.P_Explosion'"));
	if (ExplosionRef.Object)
	{
		ParticleSystem = ExplosionRef.Object; // 파티클 이펙트 지정
	}
}
 
bool UABGC_AttackHit::OnExecute_Implementation(AActor* Target, const FGameplayCueParameters& Parameters) const
{
	const FHitResult* HitResult = Parameters.EffectContext.GetHitResult();
	if (HitResult)
	{
		UGameplayStatics::SpawnEmitterAtLocation(Target, ParticleSystem, HitResult->ImpactPoint, FRotator::ZeroRotator, true); // 충돌 위치에 스폰
	}
 
	return false;
}

 

 

 

※ GameplayEffectTypes.h

HitResult는 FGameplayEffectContextHandle에 담겨 전달된다.

 

 

 

ABGC_AttackHit 클래스를 상속받는 BPGC_AttackHit 생성

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ABGA_AttackHitCheck

 

ABGA_AttackHitCheck.h

#pragma once
#include "CoreMinimal.h"
#include "Abilities/GameplayAbility.h"
#include "ABGA_AttackHitCheck.generated.h"
 
UCLASS()
class ARENABATTLEGAS_API UABGA_AttackHitCheck : public UGameplayAbility
{
	GENERATED_BODY()
	
public:
	UABGA_AttackHitCheck();
 
	virtual void ActivateAbility(const FGameplayAbilitySpecHandle Handle, const FGameplayAbilityActorInfo* ActorInfo, const FGameplayAbilityActivationInfo ActivationInfo, const FGameplayEventData* TriggerEventData) override;
 
protected:
	UFUNCTION()
	void OnTraceResultCallback(const FGameplayAbilityTargetDataHandle& TargetDataHandle);
 
	UPROPERTY(EditAnywhere, Category = "GAS")
	TSubclassOf<class UGameplayEffect> AttackDamageEffect;
 
	UPROPERTY(EditAnywhere, Category = "GAS")
	TSubclassOf<class UGameplayEffect> AttackBuffEffect;
 
	float CurrentLevel; // CurveTable의 현재레벨 변수
};

 

 

ABGA_AttackHitCheck.cpp

#include "GA/ABGA_AttackHitCheck.h"
#include "ArenaBattleGAS.h"
#include "AbilitySystemBlueprintLibrary.h"
#include "GA/AT/ABAT_Trace.h"
#include "GA/TA/ABTA_Trace.h"
#include "Attribute/ABCharacterAttributeSet.h"
#include "ArenaBattleGAS.h"
#include "Tag/ABGameplayTag.h"
 
UABGA_AttackHitCheck::UABGA_AttackHitCheck()
{
	InstancingPolicy = EGameplayAbilityInstancingPolicy::InstancedPerActor;
}
 
void UABGA_AttackHitCheck::ActivateAbility(const FGameplayAbilitySpecHandle Handle, const FGameplayAbilityActorInfo* ActorInfo, const FGameplayAbilityActivationInfo ActivationInfo, const FGameplayEventData* TriggerEventData)
{
	Super::ActivateAbility(Handle, ActorInfo, ActivationInfo, TriggerEventData);
 
	CurrentLevel = TriggerEventData->EventMagnitude;
 
	UABAT_Trace* AttackTraceTask = UABAT_Trace::CreateTask(this, AABTA_Trace::StaticClass());
	AttackTraceTask->OnComplete.AddDynamic(this, &UABGA_AttackHitCheck::OnTraceResultCallback);
	AttackTraceTask->ReadyForActivation();
}
 
void UABGA_AttackHitCheck::OnTraceResultCallback(const FGameplayAbilityTargetDataHandle& TargetDataHandle)
{
	if (UAbilitySystemBlueprintLibrary::TargetDataHasHitResult(TargetDataHandle, 0))
	{
		FHitResult HitResult = UAbilitySystemBlueprintLibrary::GetHitResultFromTargetData(TargetDataHandle, 0);
		ABGAS_LOG(LogABGAS, Log, TEXT("Target %s Detected"), *(HitResult.GetActor()->GetName()));
 
		UAbilitySystemComponent* SourceASC = GetAbilitySystemComponentFromActorInfo_Checked();
		UAbilitySystemComponent* TargetASC = UAbilitySystemBlueprintLibrary::GetAbilitySystemComponent(HitResult.GetActor());
 
		const UABCharacterAttributeSet* SourceAttribute = SourceASC->GetSet<UABCharacterAttributeSet>();
 
		FGameplayEffectSpecHandle EffectSpecHandle = MakeOutgoingGameplayEffectSpec(AttackDamageEffect, CurrentLevel);
		if (EffectSpecHandle.IsValid())
		{	
			ApplyGameplayEffectSpecToTarget(CurrentSpecHandle, CurrentActorInfo, CurrentActivationInfo, EffectSpecHandle, TargetDataHandle);
 
			FGameplayEffectContextHandle CueContextHandle = UAbilitySystemBlueprintLibrary::GetEffectContext(EffectSpecHandle);
			CueContextHandle.AddHitResult(HitResult);
			FGameplayCueParameters CueParam;
			CueParam.EffectContext = CueContextHandle;
 
			TargetASC->ExecuteGameplayCue(ABTAG_GAMEPLAYCUE_CHARACTER_ATTACKHIT, CueParam);
		}
 
		FGameplayEffectSpecHandle BuffEffectSpecHandle = MakeOutgoingGameplayEffectSpec(AttackBuffEffect);
		if (BuffEffectSpecHandle.IsValid())
		{
			ApplyGameplayEffectSpecToOwner(CurrentSpecHandle, CurrentActorInfo, CurrentActivationInfo, BuffEffectSpecHandle);
		}
	}
 
	bool bReplicatedEndAbility = true;
	bool bWasCancelled = false;
	EndAbility(CurrentSpecHandle, CurrentActorInfo, CurrentActivationInfo, bReplicatedEndAbility, bWasCancelled);
}

void UABGA_AttackHitCheck::OnTraceResultCallback(const FGameplayAbilityTargetDataHandle& TargetDataHandle)

• if (UAbilitySystemBlueprintLibrary::TargetDataHasHitResult(TargetDataHandle, 0))
  • if (EffectSpecHandle.IsValid())
    
    • ApplyGameplayEffectSpecToTarget(CurrentSpecHandle, CurrentActorInfo, CurrentActivationInfo, EffectSpecHandle, TargetDataHandle);
      
      
    • FGameplayEffectContextHandle CueContextHandle = UAbilitySystemBlueprintLibrary::GetEffectContext(EffectSpecHandle);
      CueContextHandle.AddHitResult(HitResult);
      FGameplayCueParameters CueParam;
      CueParam.EffectContext = CueContextHandle;
      
      
    • TargetASC->ExecuteGameplayCue(ABTAG_GAMEPLAYCUE_CHARACTER_ATTACKHIT, CueParam);

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실행화면

 

 

 

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아이템 상자의 구현하기

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ABGASItemBox 생성

 

Actor - ABGASItemBox 생성

 

 

ABGASItemBox.h

#pragma once
#include "CoreMinimal.h"
#include "GameFramework/Actor.h"
#include "AbilitySystemInterface.h"
#include "GameplayTagContainer.h"
#include "ABGASItemBox.generated.h"
 
UCLASS()
class ARENABATTLEGAS_API AABGASItemBox : public AActor, public IAbilitySystemInterface
{
	GENERATED_BODY()
	
public:	
	AABGASItemBox();
 
	virtual class UAbilitySystemComponent* GetAbilitySystemComponent() const override;
	virtual void NotifyActorBeginOverlap(class AActor* Other) override;
 
protected:
	virtual void PostInitializeComponents() override;
 
	void ApplyEffectToTarget(AActor* Target); // ItemBox을 먹은 대상에게 GE를 적용
	void InvokeGameplayCue(AActor* Target); // ItemBox 자체의 이펙트를 재생하기 위한 Cue
 
protected:
	UPROPERTY()
	TObjectPtr<class UAbilitySystemComponent> ASC;
 
	UPROPERTY(VisibleAnywhere, Category = Box)
	TObjectPtr<class UBoxComponent> Trigger;
 
	UPROPERTY(VisibleAnywhere, Category = Box)
	TObjectPtr<class UStaticMeshComponent> Mesh;
 
	UPROPERTY(EditAnywhere, Category = GAS)
	TSubclassOf<class UGameplayEffect> GameplayEffectClass;
 
	UPROPERTY(EditAnywhere, Category = GAS, Meta = (Categories=GameplayCue))
	FGameplayTag GameplayCueTag;
};

 

 

 

 

ABGASItemBox.cpp

#include "Item/ABGASItemBox.h"
#include "AbilitySystemComponent.h"
#include "Components/BoxComponent.h"
#include "Components/StaticMeshComponent.h"
#include "Physics/ABCollision.h"
#include "AbilitySystemBlueprintLibrary.h"
 
AABGASItemBox::AABGASItemBox()
{
	ASC = CreateDefaultSubobject<UAbilitySystemComponent>(TEXT("ASC"));
	Trigger = CreateDefaultSubobject<UBoxComponent>(TEXT("Trigger"));
	Mesh = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("Mesh"));
 
	RootComponent = Trigger;
	Mesh->SetupAttachment(Trigger);
 
	Trigger->SetCollisionProfileName(CPROFILE_ABTRIGGER);
	Trigger->SetBoxExtent(FVector(40.0f, 42.0f, 30.0f));
 
	static ConstructorHelpers::FObjectFinder<UStaticMesh> BoxMeshRef(TEXT("/Script/Engine.StaticMesh'/Game/ArenaBattle/Environment/Props/SM_Env_Breakables_Box1.SM_Env_Breakables_Box1'"));
	if (BoxMeshRef.Object)
	{
		Mesh->SetStaticMesh(BoxMeshRef.Object);
	}
	Mesh->SetRelativeLocation(FVector(0.0f, -3.5f, -30.0f));
	Mesh->SetCollisionProfileName(TEXT("NoCollision"));
}
 
UAbilitySystemComponent* AABGASItemBox::GetAbilitySystemComponent() const
{
	return ASC;
}
 
void AABGASItemBox::NotifyActorBeginOverlap(AActor* Other)
{
	Super::NotifyActorBeginOverlap(Other);
 
	InvokeGameplayCue(Other);	// ItemBox 자체의 이펙트를 재생
	ApplyEffectToTarget(Other); // ItemBox을 먹은 Target에서 이펙트를 재생
 
	Mesh->SetHiddenInGame(true);	// 매쉬를 숨김
	SetActorEnableCollision(false); // 충돌x
	SetLifeSpan(2.0f);
}
 
void AABGASItemBox::PostInitializeComponents()
{
	Super::PostInitializeComponents();
 
	ASC->InitAbilityActorInfo(this, this); // ItemBox 초기화
}
 
void AABGASItemBox::ApplyEffectToTarget(AActor* Target)
{
	UAbilitySystemComponent* TargetASC = UAbilitySystemBlueprintLibrary::GetAbilitySystemComponent(Target);
	if (TargetASC)
	{
		FGameplayEffectContextHandle EffectContext = TargetASC->MakeEffectContext();
		EffectContext.AddSourceObject(this);
		FGameplayEffectSpecHandle EffectSpecHandle = TargetASC->MakeOutgoingSpec(GameplayEffectClass, 1, EffectContext);
		if (EffectSpecHandle.IsValid())
		{
			//TargetASC->ApplyGameplayEffectSpecToSelf(*EffectSpecHandle.Data.Get()); // C++ Ver.
			TargetASC->BP_ApplyGameplayEffectSpecToSelf(EffectSpecHandle); // BP Ver.
		}
	}
}
 
void AABGASItemBox::InvokeGameplayCue(AActor* Target) // 자기 자신(=ItemBox)에게 특수효과를 재생
{
	FGameplayCueParameters Param;
	Param.SourceObject = this;
	Param.Instigator = Target;
	Param.Location = GetActorLocation();
 
	ASC->ExecuteGameplayCue(GameplayCueTag, Param);
}

 

 

일반 데미지 버젼 - BPGE_Damage

 

Dot 데미지 버젼 - BPGE_Dot

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BPGE_CharaterStat 생성

 

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BPGC_ChestOpen 생성

 

GameplayCueNotify_Static - BPGC_ChestOpen 생성

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BPGE_Damage 생성 + BPGC_Damage 생성

 

BPGE_Damage

GameplayEffect - BPGE_Damage 생성

 

BPGC_Damage

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BPGE_Heal 생성 + BPGE_Regen 생성

 

BPGE_Heal

 

 

BPGE_Regen 

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실행화면

 

 

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무적상태로 만드는 아이템 상자

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BPGE_Invincible + BPGE_InvincibleInf + BPGE_InvincibleRemove 생성

 

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무기를 주는 아이템 상자

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ABGASWeaponBox 생성

 

ABGASItemBox - ABGASWeaponBox 생성

 

 

ABGASWeaponBox.h

#pragma once
#include "CoreMinimal.h"
#include "Item/ABGASItemBox.h"
#include "ABGASWeaponBox.generated.h"
 
UCLASS()
class ARENABATTLEGAS_API AABGASWeaponBox : public AABGASItemBox
{
	GENERATED_BODY()
	
protected:
	virtual void NotifyActorBeginOverlap(AActor* Other) override;
 
protected:
	UPROPERTY(EditAnywhere, Category = GAS, Meta=(Categories=Event))
	FGameplayTag WeaponEventTag;
};

 

 

 

ABGASWeaponBox.cpp

#include "Item/ABGASWeaponBox.h"
#include "AbilitySystemBlueprintLibrary.h"
 
void AABGASWeaponBox::NotifyActorBeginOverlap(AActor* Other)
{
	Super::NotifyActorBeginOverlap(Other);
 
	UAbilitySystemBlueprintLibrary::SendGameplayEventToActor(Other, WeaponEventTag, FGameplayEventData());
}

이 이벤트를 캐릭터(=ABGASCharacterPlayer)가 직접 수신을 하게 된다.

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ABGASCharacterPlayer

 

ABGASCharacterPlayer.h

#pragma once
#include "CoreMinimal.h"
#include "Character/ABCharacterPlayer.h"
#include "AbilitySystemInterface.h"
#include "Abilities/GameplayAbilityTypes.h"
#include "ABGASCharacterPlayer.generated.h"
 
UCLASS()
class ARENABATTLEGAS_API AABGASCharacterPlayer : public AABCharacterPlayer, public IAbilitySystemInterface
{
	GENERATED_BODY()
	
public:
	AABGASCharacterPlayer();
 
	virtual class UAbilitySystemComponent* GetAbilitySystemComponent() const override;
	virtual void PossessedBy(AController* NewController) override;
	virtual void SetupPlayerInputComponent(class UInputComponent* PlayerInputComponent) override;
 
protected:
	void SetupGASInputComponent();
	void GASInputPressed(int32 InputId);
	void GASInputReleased(int32 InputId);
 
	UFUNCTION()
	virtual void OnOutOfHealth();
 
	void EquipWeapon(const FGameplayEventData* EventData);
	void UnequipWeapon(const FGameplayEventData* EventData);
 
protected:
	UPROPERTY(EditAnywhere, Category = GAS)
	TObjectPtr<class UAbilitySystemComponent> ASC;
 
	UPROPERTY(EditAnywhere, Category = GAS)
	TArray<TSubclassOf<class UGameplayAbility>> StartAbilities;
	
	UPROPERTY(EditAnywhere, Category = GAS)
	TMap<int32, TSubclassOf<class UGameplayAbility>> StartInputAbilities;
 
	UPROPERTY(VisibleAnywhere)
	TObjectPtr<class UABGASWidgetComponent> HpBar;
 
	UPROPERTY(EditAnywhere, Category = Weapon)
	TObjectPtr<class USkeletalMesh> WeaponMesh;
 
	UPROPERTY(EditAnywhere, Category = Weapon)
	float WeaponRange;
 
	UPROPERTY(EditAnywhere, Category = Weapon)
	float WeaponAttackRate;
};

변경사항 없음

 

 

ABGASCharacterPlayer.cpp

#include "Character/ABGASCharacterPlayer.h"
#include "AbilitySystemComponent.h"
#include "Player/ABGASPlayerState.h"
#include "EnhancedInputComponent.h"
#include "UI/ABGASWidgetComponent.h"
#include "UI/ABGASUserWidget.h"
#include "Attribute/ABCharacterAttributeSet.h"
#include "Tag/ABGameplayTag.h"
 
AABGASCharacterPlayer::AABGASCharacterPlayer()
{
	ASC = nullptr;
 
	static ConstructorHelpers::FObjectFinder<UAnimMontage> ComboActionMontageRef(TEXT("/Script/Engine.AnimMontage'/Game/ArenaBattleGAS/Animation/AM_ComboAttack.AM_ComboAttack'"));
	if (ComboActionMontageRef.Object)
	{
		ComboActionMontage = ComboActionMontageRef.Object;
	}
 
	HpBar = CreateDefaultSubobject<UABGASWidgetComponent>(TEXT("Widget"));
	HpBar->SetupAttachment(GetMesh());
	HpBar->SetRelativeLocation(FVector(0.0f, 0.0f, 180.0f));
	static ConstructorHelpers::FClassFinder<UUserWidget> HpBarWidgetRef(TEXT("/Game/ArenaBattle/UI/WBP_HpBar.WBP_HpBar_C"));
	if (HpBarWidgetRef.Class)
	{
		HpBar->SetWidgetClass(HpBarWidgetRef.Class);
		HpBar->SetWidgetSpace(EWidgetSpace::Screen);
		HpBar->SetDrawSize(FVector2D(200.0f, 20.f));
		HpBar->SetCollisionEnabled(ECollisionEnabled::NoCollision);
	}
 
	static ConstructorHelpers::FObjectFinder<USkeletalMesh> WeaponMeshRef(TEXT("/Script/Engine.SkeletalMesh'/Game/InfinityBladeWeapons/Weapons/Blunt/Blunt_Hellhammer/SK_Blunt_HellHammer.SK_Blunt_HellHammer'"));
	if (WeaponMeshRef.Object)
	{
		WeaponMesh = WeaponMeshRef.Object;
	}
 
	WeaponRange = 75.f;
	WeaponAttackRate = 100.0f;
}
 
UAbilitySystemComponent* AABGASCharacterPlayer::GetAbilitySystemComponent() const
{
	return ASC;
}
 
void AABGASCharacterPlayer::PossessedBy(AController* NewController)
{
	Super::PossessedBy(NewController);
 
	AABGASPlayerState* GASPS = GetPlayerState<AABGASPlayerState>();
	if (GASPS)
	{
		ASC = GASPS->GetAbilitySystemComponent();
		ASC->InitAbilityActorInfo(GASPS, this);
 
		ASC->GenericGameplayEventCallbacks.FindOrAdd(ABTAG_EVENT_CHARACTER_WEAPONEQUIP).AddUObject(this, &AABGASCharacterPlayer::EquipWeapon);
		ASC->GenericGameplayEventCallbacks.FindOrAdd(ABTAG_EVENT_CHARACTER_WEAPONUNEQUIP).AddUObject(this, &AABGASCharacterPlayer::UnequipWeapon);
 
		const UABCharacterAttributeSet* CurrentAttributeSet = ASC->GetSet<UABCharacterAttributeSet>();
		if (CurrentAttributeSet)
		{
			CurrentAttributeSet->OnOutOfHealth.AddDynamic(this, &ThisClass::OnOutOfHealth);
		}
 
		for (const auto& StartAbility : StartAbilities)
		{
			FGameplayAbilitySpec StartSpec(StartAbility);
			ASC->GiveAbility(StartSpec);
		}
 
		for (const auto& StartInputAbility : StartInputAbilities)
		{
			FGameplayAbilitySpec StartSpec(StartInputAbility.Value);
			StartSpec.InputID = StartInputAbility.Key;
			ASC->GiveAbility(StartSpec);
		}
 
		SetupGASInputComponent();
 
		APlayerController* PlayerController = CastChecked<APlayerController>(NewController);
		PlayerController->ConsoleCommand(TEXT("showdebug abilitysystem"));
	}
}
 
void AABGASCharacterPlayer::SetupPlayerInputComponent(UInputComponent* PlayerInputComponent)
{
	Super::SetupPlayerInputComponent(PlayerInputComponent);
 
	SetupGASInputComponent();
}
 
void AABGASCharacterPlayer::SetupGASInputComponent()
{
	if (IsValid(ASC) && IsValid(InputComponent))
	{
		UEnhancedInputComponent* EnhancedInputComponent = CastChecked<UEnhancedInputComponent>(InputComponent);
 
		EnhancedInputComponent->BindAction(JumpAction, ETriggerEvent::Triggered, this, &AABGASCharacterPlayer::GASInputPressed, 0);
		EnhancedInputComponent->BindAction(JumpAction, ETriggerEvent::Completed, this, &AABGASCharacterPlayer::GASInputReleased, 0);
		EnhancedInputComponent->BindAction(AttackAction, ETriggerEvent::Triggered, this, &AABGASCharacterPlayer::GASInputPressed, 1);
	}
}
 
void AABGASCharacterPlayer::GASInputPressed(int32 InputId)
{
	FGameplayAbilitySpec* Spec = ASC->FindAbilitySpecFromInputID(InputId);
	if (Spec)
	{
		Spec->InputPressed = true;
		if (Spec->IsActive())
		{
			ASC->AbilitySpecInputPressed(*Spec);
		}
		else
		{
			ASC->TryActivateAbility(Spec->Handle);
		}
	}
}
 
void AABGASCharacterPlayer::GASInputReleased(int32 InputId)
{
	FGameplayAbilitySpec* Spec = ASC->FindAbilitySpecFromInputID(InputId);
	if (Spec)
	{
		Spec->InputPressed = false;
		if (Spec->IsActive())
		{
			ASC->AbilitySpecInputReleased(*Spec);
		}
	}
}
 
void AABGASCharacterPlayer::OnOutOfHealth()
{
	SetDead();
}
 
void AABGASCharacterPlayer::EquipWeapon(const FGameplayEventData* EventData)
{
	if (Weapon)
	{
		Weapon->SetSkeletalMesh(WeaponMesh);
 
		const float CurrentAttackRange = ASC->GetNumericAttributeBase(UABCharacterAttributeSet::GetAttackRangeAttribute());
		const float CurrentAttackRate = ASC->GetNumericAttributeBase(UABCharacterAttributeSet::GetAttackRateAttribute());
 
		ASC->SetNumericAttributeBase(UABCharacterAttributeSet::GetAttackRangeAttribute(), CurrentAttackRange + WeaponRange);
		ASC->SetNumericAttributeBase(UABCharacterAttributeSet::GetAttackRateAttribute(), CurrentAttackRate + WeaponAttackRate);
	}
}
 
void AABGASCharacterPlayer::UnequipWeapon(const FGameplayEventData* EventData)
{
	if (Weapon)
	{
		const float CurrentAttackRange = ASC->GetNumericAttributeBase(UABCharacterAttributeSet::GetAttackRangeAttribute());
		const float CurrentAttackRate = ASC->GetNumericAttributeBase(UABCharacterAttributeSet::GetAttackRateAttribute());
 
		ASC->SetNumericAttributeBase(UABCharacterAttributeSet::GetAttackRangeAttribute(), CurrentAttackRange - WeaponRange);
		ASC->SetNumericAttributeBase(UABCharacterAttributeSet::GetAttackRateAttribute(), CurrentAttackRate - WeaponAttackRate);
 
		Weapon->SetSkeletalMesh(nullptr);
	}
}

void AABGASCharacterPlayer::PossessedBy(AController* NewController)

• if (GASPS)
  • ASC->GenericGameplayEventCallbacks.FindOrAdd(ABTAG_EVENT_CHARACTER_WEAPONEQUIP).AddUObject(this, &AABGASCharacterPlayer::EquipWeapon);
  • ASC->GenericGameplayEventCallbacks.FindOrAdd(ABTAG_EVENT_CHARACTER_WEAPONUNEQUIP).AddUObject(this, &AABGASCharacterPlayer::UnequipWeapon);
  • GenericGameplayEventCallbacks는 FGameplayTag와 FGameplayEventMulticastDelegate를 받는다.

 

void AABGASCharacterPlayer::EquipWeapon(const FGameplayEventData* EventData)

 

void AABGASCharacterPlayer::UnequipWeapon(const FGameplayEventData* EventData)

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실행화면

 

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정리

 

아이템 상자 구현

• 공격 명중시 장식 이펙트를 추가로 발동시키기
• 기간형 게임플레이 이펙트의 주기 설정이 가지는 특징의 학습 
• 게임 이펙트 설정으로 장식 이펙트를 발동시키는 방법의 학습
• 태그 설정을 활용한 게임플레이 이펙트 및 태그의 제거
• 게임이벤트 발동과 어트리뷰트 직접 접근을 통한 무기추가와 제거 구현   

 

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