12.충돌 설정과 대미지 전달 (PART 2)

디버깅 드로잉

디버깅 드로잉 기능을 사용하기 위해

 

[.h]
    UPROPERTY(VisibleInstanceOnly, BlueprintReadOnly, Category = Attack, Meta = (AllowPrivateAccess = true))
        float AttackRange;
    UPROPERTY(VisibleInstanceOnly, BlueprintReadOnly, Category = Attack, Meta = (AllowPrivateAccess = true))
        float AttackRadius;

[.cpp]
#include "ABCharacter.h"
#include "ABAnimInstance.h"
#include "DrawDebugHelpers.h" //추가

AABCharacter::AABCharacter()
{}
...

void AABCharacter::AttackCheck()
{
    FHitResult HitResult;
    FCollisionQueryParams Params(NAME_None, false, this);
    bool bResult = GetWorld()->SweepSingleByChannel(
        HitResult,
        GetActorLocation(),
        GetActorLocation() + GetActorForwardVector() * AttackRange,
        FQuat::Identity,
        ECollisionChannel::ECC_GameTraceChannel2,
        FCollisionShape::MakeSphere(AttackRadius),
        Params);

#if ENABLE_DRAW_DEBUG

    FVector TraceVec = GetActorForwardVector() * AttackRange;
    FVector Center = GetActorLocation() + TraceVec * 0.5f;
    float HalfHeight = AttackRange * 0.5f + AttackRadius;
    FQuat CapsuleROt = FRotationMatrix::MakeFromZ(TraceVec).ToQuat();
    FColor DrawColor = bResult ? FColor::Green : FColor::Red;
    float DebugLifeTime = 5.0f;

    DrawDebugCapsule(GetWorld(),
        Center,
        HalfHeight,
        AttackRadius,
        CapsuleRot,
        DrawColor,
        false,
   DebugLifeTime );

#endif
    if (bResult)
    {
        if (HitResult.Actor.IsValid())
        {
            printf("%s",*HitResult.Actor->GetName());
        }
    }
}

 

대미지 프레임워크

• 언리얼 엔진의 액터 클래스 AActor는 TakeDamage라는 함수가 구현돼 있고, 4개의 인자가 있다
• DamageAmount : 전달할 대미지의 세기
• DamageEvent : 대미지 종류
• EventInstigator : 공격 명령을 내린 가해자
• DamageCauser : 대미지 전달을 위해 사용한 도구

void AABCharacter::AttackCheck()
{
...
    if (bResult)
    {
        if (HitResult.Actor.IsValid())
        {
            //printf("%s",*HitResult.Actor->GetName());
            FDamageEvent DamageEvnet;
            HitResult.Actor->TakeDamage(50.0f, DamageEvnet,GetController(),this);
        }
    }
}
//h
class KGAME_API AABCharacter : public ACharacter
{
    virtual float TakeDamage(float DamageAmout, struct FDamageEvent const& DamageEvent,
        class AController* EventInstigator, AActor* DamageCauser) override;
}


//cpp
float AABCharacter::TakeDamage(float DamageAmout, struct FDamageEvent const& DamageEvent,
    class AController* EventInstigator, AActor* DamageCauser)
{
    float FinalDamage = Super::TakeDamage(DamageAmout, DamageEvent, EventInstigator, DamageCauser);
    if (FinalDamage > 0.0f)
    {
        ABAnim->SetDeadAnim();
        SetActorEnableCollision(false);
    }

    return FinalDamage;
}

 

사망시 애니메이션 추가

class KGAME_API UABAnimInstance : public UAnimInstance
{
..
    void SetDeadAnim() { IsDead = true; }

UPROPERTY(EditAnywhere, BlueprintReadOnly, Category = Pawn, Meta = (AllowPrivateAccess = true))
        bool IsDead;
};


//cpp
float AABCharacter::TakeDamage(float DamageAmout, struct FDamageEvent const& DamageEvent,
    class AController* EventInstigator, AActor* DamageCauser)
{
    float FinalDamage = Super::TakeDamage(DamageAmout, DamageEvent, EventInstigator, DamageCauser);
    if (FinalDamage > 0.0f)
    {
        ABAnim->SetDeadAnim();
        SetActorEnableCollision(false);
    }

    return FinalDamage;
}

}