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// Copyright 2025 https://yuewu.dev/en All Rights Reserved.
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#include "GIS_CraftingStructLibrary.h"
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#include UE_INLINE_GENERATED_CPP_BY_NAME(GIS_CraftingStructLibrary)
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// Copyright 2025 https://yuewu.dev/en All Rights Reserved.
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#include "GIS_CraftingSystemComponent.h"
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#include "Engine/World.h"
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#include "GIS_InventorySystemComponent.h"
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#include "GIS_CurrencySystemComponent.h"
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#include "GIS_InventoryFunctionLibrary.h"
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#include "GIS_InventorySubsystem.h"
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#include "GIS_ItemCollection.h"
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#include "Items/GIS_ItemDefinition.h"
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#include "GIS_ItemFragment_CraftingRecipe.h"
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#include "Items/GIS_ItemInstance.h"
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#include "Kismet/KismetMathLibrary.h"
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#include UE_INLINE_GENERATED_CPP_BY_NAME(GIS_CraftingSystemComponent)
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// Sets default values for this component's properties
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UGIS_CraftingSystemComponent::UGIS_CraftingSystemComponent()
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{
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// Set this component to be initialized when the game starts, and to be ticked every frame. You can turn these features
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// off to improve performance if you don't need them.
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PrimaryComponentTick.bCanEverTick = false;
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NumOfSelectedItemsCache = 0;
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// ...
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}
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bool UGIS_CraftingSystemComponent::Craft(const UGIS_ItemDefinition* Recipe, UGIS_InventorySystemComponent* CostInventory, int32 Quantity)
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{
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const UGIS_ItemFragment_CraftingRecipe* RecipeFragment = GetRecipeFragment(Recipe);
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if (RecipeFragment == nullptr)
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{
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return false;
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}
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return CraftInternal(Recipe, CostInventory, Quantity);
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}
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bool UGIS_CraftingSystemComponent::CanCraft(const UGIS_ItemDefinition* RecipeDefinition, UGIS_InventorySystemComponent* Inventory, int32 Quantity)
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{
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return CanCraftInternal(RecipeDefinition, Inventory, Quantity);
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}
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bool UGIS_CraftingSystemComponent::RemoveItemIngredients(UGIS_InventorySystemComponent* Inventory, const TArray<FGIS_ItemInfo>& ItemIngredients)
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{
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for (int32 i = 0; i < ItemIngredients.Num(); i++)
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{
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FGIS_ItemInfo ItemInfoToRemove;
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ItemInfoToRemove.Item = ItemIngredients[i].Item;
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ItemInfoToRemove.Amount = ItemIngredients[i].Amount;
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if (Inventory->GetDefaultCollection()->RemoveItem(ItemInfoToRemove).Amount == ItemInfoToRemove.Amount) { continue; }
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return false;
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}
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return false;
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}
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bool UGIS_CraftingSystemComponent::IsValidRecipe_Implementation(const UGIS_ItemDefinition* RecipeDefinition) const
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{
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if (const UGIS_ItemFragment_CraftingRecipe* Fragment = GetRecipeFragment(RecipeDefinition))
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{
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return !Fragment->InputItems.IsEmpty() && !Fragment->OutputItems.IsEmpty();
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}
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return false;
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}
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bool UGIS_CraftingSystemComponent::CanCraftInternal(const UGIS_ItemDefinition* RecipeDefinition, UGIS_InventorySystemComponent* Inventory,
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int32 Quantity)
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{
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if (!IsValidRecipe(RecipeDefinition))
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{
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return false;
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}
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const UGIS_ItemFragment_CraftingRecipe* RecipeFragment = GetRecipeFragment(RecipeDefinition);
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check(RecipeFragment != nullptr);
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if (!SelectItemForIngredients(Inventory, RecipeFragment->InputItems, Quantity))
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{
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return false;
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}
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TArray<FGIS_ItemInfo> Selected;
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int32 SelectedCount = 0;
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// Has enough items? 有足够的道具？
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if (!CheckIfEnoughItemIngredients(RecipeFragment->InputItems, Quantity, SelectedItemsCache, Selected, SelectedCount))
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{
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return false;
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}
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UGIS_CurrencySystemComponent* CurrencySystem = Inventory->GetCurrencySystem();
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if (CurrencySystem == nullptr)
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{
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return false;
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}
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// Has enough currencies? 有足够货币？
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if (!CurrencySystem->HasCurrencies(UGIS_InventoryFunctionLibrary::MultiplyCurrencies(RecipeFragment->InputCurrencies, Quantity)))
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{
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return false;
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}
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return true;
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}
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bool UGIS_CraftingSystemComponent::CraftInternal(const UGIS_ItemDefinition* RecipeDefinition, UGIS_InventorySystemComponent* Inventory, int32 Quantity)
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{
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const UGIS_ItemFragment_CraftingRecipe* RecipeFragment = GetRecipeFragment(RecipeDefinition);
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if (RecipeFragment == nullptr)
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{
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return false;
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}
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if (!SelectItemForIngredients(Inventory, RecipeFragment->InputItems, Quantity))
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{
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return false;
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}
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if (!CanCraftInternal(RecipeDefinition, Inventory, Quantity))
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{
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return false;
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}
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UGIS_CurrencySystemComponent* CurrencySystem = Inventory->GetCurrencySystem();
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bool bCurrencyRemoveSuccess = CurrencySystem->RemoveCurrencies(UGIS_InventoryFunctionLibrary::MultiplyCurrencies(RecipeFragment->InputCurrencies, Quantity));
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bool bItemRemoveSuccess = RemoveItemIngredients(Inventory, SelectedItemsCache);
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if (bCurrencyRemoveSuccess && bItemRemoveSuccess)
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{
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ProduceCraftingOutput(RecipeDefinition, Inventory, Quantity);
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return true;
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}
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return false;
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}
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void UGIS_CraftingSystemComponent::ProduceCraftingOutput(const UGIS_ItemDefinition* RecipeDefinition, UGIS_InventorySystemComponent* Inventory, int32 Quantity)
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{
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const UGIS_ItemFragment_CraftingRecipe* RecipeFragment = GetRecipeFragment(RecipeDefinition);
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if (RecipeFragment == nullptr)
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{
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return;
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}
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TArray<FGIS_ItemDefinitionAmount> ItemAmounts = UGIS_InventoryFunctionLibrary::MultiplyItemAmounts(RecipeFragment->OutputItems, Quantity);
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for (int32 i = 0; i < ItemAmounts.Num(); i++)
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{
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FGIS_ItemInfo ItemInfoToAdd;
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ItemInfoToAdd.Item = UGIS_InventorySubsystem::Get(GetWorld())->CreateItem(Inventory->GetOwner(), ItemAmounts[i].Definition);
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ItemInfoToAdd.Amount = ItemAmounts[i].Amount;
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Inventory->AddItem(ItemInfoToAdd);
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}
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}
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const UGIS_ItemFragment_CraftingRecipe* UGIS_CraftingSystemComponent::GetRecipeFragment(const UGIS_ItemDefinition* RecipeDefinition) const
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{
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return RecipeDefinition ? RecipeDefinition->FindFragment<UGIS_ItemFragment_CraftingRecipe>() : nullptr;
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}
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bool UGIS_CraftingSystemComponent::SelectItemForIngredients(const UGIS_InventorySystemComponent* Inventory, const TArray<FGIS_ItemDefinitionAmount>& ItemIngredients, int32 Quantity)
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{
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SelectedItemsCache.Empty();
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NumOfSelectedItemsCache = 0;
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for (int32 i = 0; i < ItemIngredients.Num(); i++)
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{
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auto RequiredItem = ItemIngredients[i];
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int32 NeededAmount = RequiredItem.Amount * Quantity;
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TArray<FGIS_ItemInfo> FilteredItemInfos;
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if (Inventory->GetItemInfosByDefinition(RequiredItem.Definition, FilteredItemInfos))
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{
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for (int32 j = 0; j < FilteredItemInfos.Num(); j++)
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{
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const FGIS_ItemInfo& itemInfo = FilteredItemInfos[j];
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int32 HaveAmount = itemInfo.Amount;
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bool FoundSelectedItem = false;
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for (int k = 0; k < NumOfSelectedItemsCache; k++)
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{
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const FGIS_ItemInfo& SelectedItemInfo = SelectedItemsCache[k];
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if (itemInfo.Item != SelectedItemInfo.Item) { continue; }
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if (itemInfo.StackId != SelectedItemInfo.StackId) { continue; }
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FoundSelectedItem = true;
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HaveAmount = FMath::Max(0, HaveAmount - SelectedItemInfo.Amount);
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int32 additionalIgnoreAmount = FMath::Clamp(HaveAmount, 0, NeededAmount);
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//更新已经选择道具信息。
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SelectedItemsCache[k] = FGIS_ItemInfo(SelectedItemInfo.Amount + additionalIgnoreAmount, SelectedItemInfo);
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}
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int32 SelectedAmount = FMath::Clamp(HaveAmount, 0, NeededAmount);
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//记录已选择道具信息。
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if (FoundSelectedItem == false)
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{
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SelectedItemsCache.SetNum(NumOfSelectedItemsCache + 1);
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SelectedItemsCache[NumOfSelectedItemsCache] = FGIS_ItemInfo(SelectedAmount, itemInfo);
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NumOfSelectedItemsCache++;
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}
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NeededAmount -= SelectedAmount;
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if (NeededAmount <= 0) { break; }
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}
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}
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if (NeededAmount <= 0) { continue; }
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return false;
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}
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return true;
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}
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bool UGIS_CraftingSystemComponent::CheckIfEnoughItemIngredients(const TArray<FGIS_ItemDefinitionAmount>& ItemIngredients, int32 Quantity, const TArray<FGIS_ItemInfo>& SelectedItems,
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TArray<FGIS_ItemInfo>& ItemsToIgnore, int32& NumOfItemsToIgnore)
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{
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for (int32 i = 0; i < ItemIngredients.Num(); i++)
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{
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const FGIS_ItemDefinitionAmount& ingredientAmount = ItemIngredients[i];
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int32 neededAmount = Quantity * ingredientAmount.Amount;
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for (int32 j = 0; j < SelectedItems.Num(); j++)
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{
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const FGIS_ItemInfo& itemInfo = SelectedItems[j];
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if (ingredientAmount.Definition != itemInfo.Item->GetDefinition()) { continue; }
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int32 haveAmount = itemInfo.Amount;
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bool foundMatch = false;
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int32 selectedAmount = FMath::Clamp(haveAmount, 0, neededAmount);
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if (foundMatch == false)
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{
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ItemsToIgnore.SetNum(NumOfItemsToIgnore + 1);
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ItemsToIgnore[NumOfItemsToIgnore] = FGIS_ItemInfo(selectedAmount, itemInfo);
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NumOfItemsToIgnore++;
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}
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neededAmount -= selectedAmount;
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if (neededAmount <= 0) { break; }
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}
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if (neededAmount > 0)
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{
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return false;
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}
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}
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return true;
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}
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@@ -0,0 +1,20 @@
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// Copyright 2025 https://yuewu.dev/en All Rights Reserved.
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#include "GIS_ItemFragment_CraftingRecipe.h"
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#include UE_INLINE_GENERATED_CPP_BY_NAME(GIS_ItemFragment_CraftingRecipe)
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#if WITH_EDITOR
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#include "UObject/ObjectSaveContext.h"
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void UGIS_ItemFragment_CraftingRecipe::PreSave(FObjectPreSaveContext SaveContext)
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{
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Super::PreSave(SaveContext);
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for (FGIS_ItemDefinitionAmount& DefaultItem : OutputItems)
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{
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DefaultItem.EditorFriendlyName = FString::Format(TEXT("{0}x {1}"), {DefaultItem.Amount, DefaultItem.Definition.IsNull() ? TEXT("Invalid Item") : DefaultItem.Definition.GetAssetName()});
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}
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}
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#endif
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