요약
1.

용어 설명
1.

Tip
1. AddToRoot :
최상위에 배치함으로써 가비지 컬렉터가 삭제하지 못하도록 설정.

ItemDataTable을 이용하는 방법

---

GameInstance는 게임에 1개만 동작된다.
거기에 Inventory Manager를 추가해 관리하도록한다.

이름 : InventoryManager
경로 : 클래스\Manager

InventoryManager.h

class UE11_API UInventoryManager : public UObject
{
	GENERATED_BODY()

private:
	static	UWorld* m_CurWorld;

public:
		UInventoryManager();
	
public:
	static UInventoryManager* GetInst(UWorld* _World);
	static UInventoryManager* GetInst(UGameInstance* _GameInst);

public:
	UDataTable* m_ItemTable;
	TMap<EITEM_ID, FName>	m_id;
public:
	void ShowInventory(bool _Show);
	bool IsInventoryOpen();
	void SetItemTable(UDataTable* _Table);
	const FItemDataInfo* GetItemInfo(EITEM_ID _ItemID);
};

InventoryManager.cpp

// Fill out your copyright notice in the Description page of Project Settings.


#include "InventoryManager.h"
#include "../UE11GameInstance.h"
#include "../UE11GameModeBase.h"
#include "../UMG/MainHUDBase.h"

UWorld* UInventoryManager::m_CurWorld = nullptr;

UInventoryManager::UInventoryManager()
{
}

UInventoryManager* UInventoryManager::GetInst(UWorld* _World)
{
	m_CurWorld = _World;

	UUE11GameInstance* GameInst = Cast<UUE11GameInstance>(UGameplayStatics::GetGameInstance(_World));

	//인벤토리 요청이 처음이라면 안만들어진 상태니 생성 구현
	if (!IsValid(GameInst->m_Inventoty))
	{
		GameInst->m_Inventoty = NewObject<UInventoryManager>();

		// 가비지 컬렉터가 지우지 못하도록 최상위 우선순위로 지정.
		GameInst->m_Inventoty->AddToRoot();

	}
	
	return GameInst->m_Inventoty;

}

UInventoryManager* UInventoryManager::GetInst(UGameInstance* _GameInst)
{
	UUE11GameInstance* GameInst = Cast<UUE11GameInstance>(_GameInst);

	//인벤토리 요청이 처음이라면 안만들어진 상태니 생성 구현
	if (!IsValid(GameInst->m_Inventoty))
	{
		GameInst->m_Inventoty = NewObject<UInventoryManager>();

		// 가비지 컬렉터가 지우지 못하도록 최상위 우선순위로 지정.
		GameInst->m_Inventoty->AddToRoot();

	}

	return GameInst->m_Inventoty;
}

bool UInventoryManager::IsInventoryOpen()
{
	AUE11GameModeBase* GameMode = Cast<AUE11GameModeBase>(UGameplayStatics::GetGameMode(m_CurWorld));

	//Main Level인지 확인 Main이 아니라면 false.
	if (!IsValid(GameMode))
	{
		return false;
	}


	// Main Level이라면 GameMode의 HUD를 가져오기
	UMainHUDBase* MainHUD = GameMode->GetMainHUD();
	UInventoryBase* InventoryWidget = MainHUD->GetInventoryWidget();

	return InventoryWidget->IsVisible();
}


void UInventoryManager::ShowInventory(bool _Show)
{
	AUE11GameModeBase* GameMode = Cast<AUE11GameModeBase>(UGameplayStatics::GetGameMode(m_CurWorld));

	if (!IsValid(GameMode))
		return;

	UMainHUDBase* MainHUD = GameMode->GetMainHUD();
	UInventoryBase* InventoryWidget = MainHUD->GetInventoryWidget();

	if (_Show)
		InventoryWidget->SetVisibility(ESlateVisibility::Visible);
	else
		InventoryWidget->SetVisibility(ESlateVisibility::Hidden);

}

void UInventoryManager::SetItemTable(UDataTable* _Table)
{
	m_ItemTable = _Table;


	//데이터 테이블에 있는 모든 데이터 정보.
	FString str;
	TArray<FItemDataInfo*> AllItemInfo;
	m_ItemTable->GetAllRows<FItemDataInfo>(str, AllItemInfo);


	//데이터 테이블에 있는 모든 행이름
	TArray<FName> AllRowname;
	AllRowname = m_ItemTable->GetRowNames();


	for (int32 i = 0; i < AllItemInfo.Num(); ++i)
	{
		m_id.Add(AllItemInfo[i]->ID, AllRowname[i]);

	}
}

const FItemDataInfo* UInventoryManager::GetItemInfo(EITEM_ID _ItemID)
{
	FName RowName = m_id.FindRef(_ItemID);

	FItemDataInfo* ItemInfo =  m_ItemTable->FindRow<FItemDataInfo>(RowName, nullptr);

		return ItemInfo;
}

GameInstance 수정

GameInstance.h // 추가 된부분만 확인

// Fill out your copyright notice in the Description page of Project Settings.

#pragma once

class UInventoryManager; <<<추가!

#include "GameInfo.h"
#include "Engine/GameInstance.h"
#include "UE11GameInstance.generated.h"

UCLASS()
class UE11_API UUE11GameInstance : public UGameInstance
{
	GENERATED_BODY()

public:
	UUE11GameInstance();
	~UUE11GameInstance();

private:
	UDataTable* m_MonsterTable;
	UDataTable* m_ItemTable;
	UInventoryManager* m_Inventoty; <<<추가!

public: 
	virtual void Init();
	
public:
	const FMonsterTableInfo* FindMonsterTable(const FName& Name); 

	friend class UInventoryManager; <<<추가!
};

Controller 수정

1. Inventory 입력키 추가

2. InputController에 관련 함수 추가

PlayerCharacter.cpp

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

	PlayerInputComponent->BindAction<APlayerCharacter>(TEXT("Inventory"), EInputEvent::IE_Pressed, this,&APlayerCharacter::InventoryOnOff);

}
void APlayerCharacter::InventoryOnOff()
{
	// Inventory Manager에 접근
	// Inventroy가 켜져있으면 끄고 꺼져있으면 켜기
	if (IsValid(UInventoryManager::GetInst(GetWorld())))
	{
		if (UInventoryManager::GetInst(GetWorld())->IsInventoryOpen())
		{
			UInventoryManager::GetInst(GetWorld())->ShowInventory(false);
		}
		else
		{
			UInventoryManager::GetInst(GetWorld())->ShowInventory(true);
		}
	}

	const FItemDataInfo* ItemInfo = UInventoryManager::GetInst(GetWorld())->GetItemInfo(EITEM_ID::CI_POTION);
}

~ 나중에 정리 예정