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아이템 제작 레시피 구조체
FItemCraftRecipe
{
UPROPERTY(Category = RecipeInfo, EditAnywhere)
int32 RecipeID;

UPROPERTY(Category = RecipeInfo, EditAnywhere)
TMap<int32, int32> needs;

UPROPERTY(Category = RecipeInfo, EditAnywhere)
TSubclassOf<AActor> target_item;
}

Game State 추가 함수 및 프로퍼티

header
{
 . . . .
 UPROPERTY(EditDefaultsOnly)
class UDataTable* CraftDB;
 
 UDataTable* GetCraftRecipeDB() const;
 . . . .
}

ASciFiCombatGameState::ASciFiCombatGameState()
{
	. . . .
   static ConstructorHelpers::FObjectFinder<UDataTable> BP_CraftDB(TEXT("DataTable'/Game/Data/CraftDB.CraftDB'"));
	CraftDB = BP_ItemDB.Object;
	. . . .
}

UDataTable* ASciFiCombatGameState::GetCraftRecipeDB() const
{
	return CraftDB;
}

itemActionComponent

header
class UItemActionComponent
{
	. . . .
    UPROPERTY(Replicated, BlueprintReadWrite)
	FItemCraftRecipe selected_recipe;
    . . . .
}

void UItemActionComponent::SelectRecipe(const FItemCraftRecipe& recipe_info) RPC : Server -> MultiCast 적용
{
	//  아이템을 제작할 레시피를 선택함
    selected_recipe = recipe_info;
}

bool UItemActionComponent::CheckItemCraftCondition()
{
	int check_count = 0;
	선택한 레시피와 현재 인벤토리를 비교하면서 제작이 가능한지를 체크함
    selected_recipe
    
    for ~ selected_recipe.needs
    	for ~ inventory
	        // 현재 인벤토리 내부에 레시피에서 요구로하는 재료가 존재하는지?
        	if exist selected_recipe.needs key value in inventory . . . .
    			// 가지고 있는 재료의 개수가 레시피의 요구사항보다 많거나 같은지??			       
	            if	inventory[current].Quantity >= selected_recipe[current]
					check_count++;

	if check_count is equal selected_recipe.needs.Num();
    	return true;
    return false;
}

void UItemActionComponent::CraftItem()
{
	// 아이템 제작이 가능하다면
	if CheckItemCraftCondition() is true
    	Spawn Actor by selected_recipe.target_item(Type is TSubclassof<AActor>)
}