第一次提交

Plugins/GIS/Source/GenericInventorySystem/Private/GIS_InventoryFunctionLibrary.cpp

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+// Copyright 2025 https://yuewu.dev/en  All Rights Reserved.
+
+
+#include "GIS_InventoryFunctionLibrary.h"
+
+#include "GIS_ItemCollection.h"
+#include "Items/GIS_ItemInstance.h"
+
+
+#include UE_INLINE_GENERATED_CPP_BY_NAME(GIS_InventoryFunctionLibrary)
+
+TArray<FGIS_ItemDefinitionAmount> UGIS_InventoryFunctionLibrary::MultiplyItemAmounts(const TArray<FGIS_ItemDefinitionAmount>& ItemAmounts, int32 Multiplier)
+{
+	TArray<FGIS_ItemDefinitionAmount> Results;
+	for (int32 i = 0; i < ItemAmounts.Num(); i++)
+	{
+		Results.Add(FGIS_ItemDefinitionAmount(ItemAmounts[i].Definition, ItemAmounts[i].Amount * Multiplier));
+	}
+	return Results;
+}
+
+TArray<FGIS_CurrencyEntry> UGIS_InventoryFunctionLibrary::MultiplyCurrencies(const TArray<FGIS_CurrencyEntry>& Currencies, float Multiplier)
+{
+	TArray<FGIS_CurrencyEntry> Results;
+	for (int32 i = 0; i < Currencies.Num(); i++)
+	{
+		Results.Add(FGIS_CurrencyEntry(Currencies[i].Definition, Currencies[i].Amount * Multiplier));
+	}
+	return Results;
+}
+
+TArray<FGIS_ItemInfo> UGIS_InventoryFunctionLibrary::FilterItemInfosByTagQuery(const TArray<FGIS_ItemInfo>& ItemInfos, const FGameplayTagQuery& Query)
+{
+	return ItemInfos.FilterByPredicate([&](const FGIS_ItemInfo& ItemInfo)
+	{
+		return ItemInfo.Item != nullptr && ItemInfo.Item->GetItemTags().MatchesQuery(Query);
+	});
+}
+
+
+TArray<FGIS_ItemStack> UGIS_InventoryFunctionLibrary::FilterItemStacksByTagQuery(const TArray<FGIS_ItemStack>& ItemStacks, const FGameplayTagQuery& TagQuery)
+{
+	return ItemStacks.FilterByPredicate([TagQuery](const FGIS_ItemStack& Stack)
+	{
+		return TagQuery.Matches(Stack.Item->GetItemTags());
+	});
+}
+
+TArray<FGIS_ItemStack> UGIS_InventoryFunctionLibrary::FilterItemStacksByDefinition(const TArray<FGIS_ItemStack>& ItemStacks, const UGIS_ItemDefinition* Definition)
+{
+	return ItemStacks.FilterByPredicate([Definition](const FGIS_ItemStack& Stack)
+	{
+		return Stack.Item->GetDefinition() == Definition;
+	});
+}
+
+TArray<FGIS_ItemStack> UGIS_InventoryFunctionLibrary::FilterItemStacksByCollectionTags(const TArray<FGIS_ItemStack>& ItemStacks, const FGameplayTagContainer& CollectionTags)
+{
+	return ItemStacks.FilterByPredicate([CollectionTags](const FGIS_ItemStack& Stack)
+	{
+		return Stack.Collection->GetCollectionTag().MatchesAnyExact(CollectionTags);
+	});
+}