WeaponLoadoutComponent.h

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// Fill out your copyright notice in the Description page of Project Settings.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Components/ActorComponent.h"
#include "GAS/GrantedHandles.h"
#include "GameplayTagContainer.h"
#include "WeaponLoadoutComponent.generated.h"
 
class UAbilitySystemComponent;
class UAudioEmitterComponent;
class UWeaponDefinition;
 
// 장착 무기가 실제로 교체된 뒤 브로드캐스트된다. (이전 무기 태그, 새 무기 태그)
DECLARE_MULTICAST_DELEGATE_TwoParams(FOnWeaponChanged, const FGameplayTag& /*PreviousWeaponTag*/, const FGameplayTag& /*NewWeaponTag*/);
 
UCLASS(ClassGroup = (Custom), meta = (BlueprintSpawnableComponent))
class CK_UE_API UWeaponLoadoutComponent : public UActorComponent
{
    GENERATED_BODY()
 
public:
    UWeaponLoadoutComponent();
 
public:
    bool EquipWeapon(const FGameplayTag& WeaponTag);
    bool SwapWeapon(const FGameplayTag& WeaponTag);
    void UnequipCurrent();
    void ResetSkillCooldowns();
 
public:
    FOnWeaponChanged OnWeaponChanged;
 
public:
    FORCEINLINE FGameplayTag GetCurrentWeaponTag() const
    {
        return CurrentWeaponTag;
    }
 
    FORCEINLINE UWeaponDefinition* GetCurrentDefinition() const
    {
        return CurrentDefinition;
    }
 
protected:
    virtual void BeginPlay() override;
    virtual void EndPlay(const EEndPlayReason::Type EndPlayReason) override;
 
    UPROPERTY(EditDefaultsOnly, BlueprintReadOnly, Category = "Weapon")
    TArray<TObjectPtr<UWeaponDefinition>> WeaponDefinitions;
 
private:
    bool ApplyWeapon(const FGameplayTag& WeaponTag, bool bActivateSwapInSkill);
    bool ApplyStatBaseline(UWeaponDefinition* Definition);
    UWeaponDefinition* FindWeaponDefinition(const FGameplayTag& WeaponTag) const;
 
    // 새 Definition 의 InputAbilityMap 순회하며 GiveAbility + 핸들을 GrantedHandles 에 누적.
    void GrantAbilitiesFromDefinition(UWeaponDefinition* Definition);
 
    // 메시/AnimBP 교체.
    void ApplyVisualData(UWeaponDefinition* Definition);
    void ApplyAudioData(UWeaponDefinition* Definition);
    void ClearAudioData();
    void ActivateSwapInSkill(UWeaponDefinition* Definition, FGameplayAbilitySpecHandle SwapInSkillHandle);
 
    UAudioEmitterComponent* GetWeaponAudioTagComponent();
 
    // 안전한 ASC 획득 (소유자 변경에 대비해 매번 IAbilitySystemInterface 로 해석).
    UAbilitySystemComponent* GetASC() const;
    FGameplayAbilitySpecHandle GrantSwapInSkill(UWeaponDefinition* Definition);
 
private:
    UPROPERTY(Transient)
    TObjectPtr<UWeaponDefinition> CurrentDefinition = nullptr;
 
    UPROPERTY(Transient)
    FGameplayTag CurrentWeaponTag;
 
    // 현재 무기가 ASC 에 부여한 어빌리티/GE 핸들 묶음.
    // UnequipCurrent 에서 TakeFromAbilitySystem 한 번으로 일괄 회수.
    UPROPERTY(Transient)
    FGrantedHandles GrantedHandles;
 
    UPROPERTY(Transient)
    TWeakObjectPtr<UAbilitySystemComponent> CachedASC;
 
    UPROPERTY(Transient)
    TWeakObjectPtr<UAudioEmitterComponent> CachedWeaponAudioTagComponent;
};