pokeemerald/include/item.h

#ifndef GUARD_ITEM_H
#define GUARD_ITEM_H

#include "constants/item.h"
#include "constants/item_config.h"

typedef void (*ItemUseFunc)(u8);

struct Item
{
    u8 name[ITEM_NAME_LENGTH];
    u16 itemId;
    u16 price;
    u8 holdEffect;
    u8 holdEffectParam;
    const u8 *description;
    u8 importance;
    bool8 registrability; // unused
    u8 pocket;
    u8 type;
    ItemUseFunc fieldUseFunc;
    u8 battleUsage;
    ItemUseFunc battleUseFunc;
    u8 secondaryId;
    u8 flingPower;
};

struct BagPocket
{
    struct ItemSlot *itemSlots;
    u8 capacity;
};

extern const struct Item gItems[];
extern struct BagPocket gBagPockets[];

void ApplyNewEncryptionKeyToBagItems(u32 newKey);
void ApplyNewEncryptionKeyToBagItems_(u32 newKey);
void SetBagItemsPointers(void);
void CopyItemName(u16 itemId, u8 *dst);
void CopyItemNameHandlePlural(u16 itemId, u8 *dst, u32 quantity);
void GetBerryCountString(u8 *dst, const u8 *berryName, u32 quantity);
bool8 IsBagPocketNonEmpty(u8 pocket);
bool8 CheckBagHasItem(u16 itemId, u16 count);
bool8 HasAtLeastOneBerry(void);
bool8 CheckBagHasSpace(u16 itemId, u16 count);
bool8 AddBagItem(u16 itemId, u16 count);
bool8 RemoveBagItem(u16 itemId, u16 count);
u8 GetPocketByItemId(u16 itemId);
void ClearItemSlots(struct ItemSlot *itemSlots, u8 itemCount);
u8 CountUsedPCItemSlots(void);
bool8 CheckPCHasItem(u16 itemId, u16 count);
bool8 AddPCItem(u16 itemId, u16 count);
void RemovePCItem(u8 index, u16 count);
void CompactPCItems(void);
void SwapRegisteredBike(void);
u16 BagGetItemIdByPocketPosition(u8 pocketId, u16 pocketPos);
u16 BagGetQuantityByPocketPosition(u8 pocketId, u16 pocketPos);
void CompactItemsInBagPocket(struct BagPocket *bagPocket);
void SortBerriesOrTMHMs(struct BagPocket *bagPocket);
void MoveItemSlotInList(struct ItemSlot* itemSlots_, u32 from, u32 to_);
void ClearBag(void);
u16 CountTotalItemQuantityInBag(u16 itemId);
bool8 AddPyramidBagItem(u16 itemId, u16 count);
bool8 RemovePyramidBagItem(u16 itemId, u16 count);
const u8 *ItemId_GetName(u16 itemId);
u16 ItemId_GetPrice(u16 itemId);
u8 ItemId_GetHoldEffect(u16 itemId);
u8 ItemId_GetHoldEffectParam(u16 itemId);
const u8 *ItemId_GetDescription(u16 itemId);
u8 ItemId_GetImportance(u16 itemId);
u8 ItemId_GetPocket(u16 itemId);
u8 ItemId_GetType(u16 itemId);
ItemUseFunc ItemId_GetFieldFunc(u16 itemId);
u8 ItemId_GetBattleUsage(u16 itemId);
ItemUseFunc ItemId_GetBattleFunc(u16 itemId);
u8 ItemId_GetSecondaryId(u16 itemId);
u8 ItemId_GetFlingPower(u16 itemId);

#endif // GUARD_ITEM_H