[DevLog] QuantumVerge 개발일지 #04

1. 날짜 (Date)

2025/07/11

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2. 작업 목표 (Daily Goals)

• Wavelets, Neutrinos 구현
• GAS(Gameplay Ability System) 이해

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3. 진행 사항 (Progress)

• GAS 공부 중

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4. 문제점 및 해결 방법 (Challenges & Solutions)

• 텔레포트 시 순간적인 플레이어와의 Overlap을 검사하려고 했다. 이 경우 GetOverlappingActors() 또는 UKismetSystemLibrary::SphereOverlapActors()를 사용해야 하는데, 이렇게 되면 Overlap된 모든 Actor들 중 Player를 탐색해야 한다. 이 게임에는 하나의 플레이어와 매우 많은 몬스터가 존재하기 때문에, 이러한 방법은 매우 비효율적이다. GAS 세팅이 끝나면 바뀌겠지만, 우선 Enemy 텔레포트 시의 위치와 Target(Player)와의 벡터 길이를 통해 처리했다.

TArray<AActor*> OverlappingActors;
MyCollisionComponent->GetOverlappingActors(OverlappingActors, APlayerCharacter::StaticClass());

for (AActor* Actor : OverlappingActors)
{
	APlayerCharacter* PC = Cast<APlayerCharacter>(Actor);
	if (IsValid(PC))
	{
		UE_LOG(LogTemp, Warning, TEXT("Overlap Detected with Player!"));
		// 데미지 주기 등 처리
	}
}

//또는

TArray<AActor*> HitActors;
FVector CheckLocation = GetActorLocation();
float Radius = 100.f;

UKismetSystemLibrary::SphereOverlapActors(
	GetWorld(),
	CheckLocation,
	Radius,
	TArray<TEnumAsByte<EObjectTypeQuery>>{ EObjectTypeQuery::ObjectTypeQuery3 }, // Pawn
	APlayerCharacter::StaticClass(),
	TArray<AActor*>(),
	HitActors
);

for (AActor* Actor : HitActors)
{
	APlayerCharacter* PC = Cast<APlayerCharacter>(Actor);
	if (IsValid(PC))
	{
		UE_LOG(LogTemp, Warning, TEXT("Overlapped with player on teleport!"));
		// 데미지 처리 등
	}
}

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5. 다음 단계 (Next Steps)

• EnemyBase에 GAS AttributeSet 적용

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6. 회고 (Reflection)

Ability의 ExecuteTeleport() 함수를 TeleportIndicator가 Delegate로 호출해볼까 했지만, 어차피 이 객체는 자신을 생성한 Ability와 1:1 소통만 하면 되니 Delegate 사용하지 않기로 결정.

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7. 메모 (Notes)

• GamePlayAbility.h 주석 ```text

  // The important functions: // // CanActivateAbility() - const function to see if ability is activatable. Callable by UI etc // // TryActivateAbility() - Attempts to activate the ability. Calls CanActivateAbility(). Input events can call this directly. // - Also handles instancing-per-execution logic and replication/prediction calls. // // CallActivateAbility() - Protected, non virtual function. Does some boilerplate ‘pre activate’ stuff, then calls ActivateAbility() // // ActivateAbility() - What the abilities does. This is what child classes want to override. // // CommitAbility() - Commits reources/cooldowns etc. ActivateAbility() must call this! // // CancelAbility() - Interrupts the ability (from an outside source). // // EndAbility() - The ability has ended. This is intended to be called by the ability to end itself.

```

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