ItemHandler.cpp

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/*
 * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "WorldSession.h"
#include "BattlePetMgr.h"
#include "Common.h"
#include "Creature.h"
#include "DatabaseEnv.h"
#include "DB2Stores.h"
#include "GossipDef.h"
#include "Item.h"
#include "ItemPackets.h"
#include "Log.h"
#include "NPCPackets.h"
#include "ObjectMgr.h"
#include "Player.h"
#include "World.h"
 
void WorldSession::HandleSplitItemOpcode(WorldPackets::Item::SplitItem& splitItem)
{
 if (!splitItem.Inv.Items.empty())
 {
 TC_LOG_ERROR("network", "HandleSplitItemOpcode - Invalid ItemCount ({})", splitItem.Inv.Items.size());
 return;
 }
 
 TC_LOG_DEBUG("network", "HandleSplitItemOpcode: receive FromPackSlot: {}, FromSlot: {}, ToPackSlot: {}, ToSlot: {}, Quantity: {}",
 splitItem.FromPackSlot, splitItem.FromSlot, splitItem.ToPackSlot, splitItem.ToSlot, splitItem.Quantity);
 
 uint16 src = ((splitItem.FromPackSlot << 8) | splitItem.FromSlot);
 uint16 dst = ((splitItem.ToPackSlot << 8) | splitItem.ToSlot);
 
 if (src == dst)
 return;
 
 // check count - if zero it's fake packet
 if (!splitItem.Quantity)
 return;
 
 if (!_player->IsValidPos(splitItem.FromPackSlot, splitItem.FromSlot, true))
 {
 _player->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND);
 return;
 }
 
 if (!_player->IsValidPos(splitItem.ToPackSlot, splitItem.ToSlot, false)) // can be autostore pos
 {
 _player->SendEquipError(EQUIP_ERR_WRONG_SLOT);
 return;
 }
 
 _player->SplitItem(src, dst, splitItem.Quantity);
}
 
void WorldSession::HandleSwapInvItemOpcode(WorldPackets::Item::SwapInvItem& swapInvItem)
{
 if (swapInvItem.Inv.Items.size() != 2)
 {
 TC_LOG_ERROR("network", "HandleSwapInvItemOpcode - Invalid itemCount ({})", swapInvItem.Inv.Items.size());
 return;
 }
 
 TC_LOG_DEBUG("network", "HandleSwapInvItemOpcode: receive Slot1: {}, Slot2: {}",
 swapInvItem.Slot1, swapInvItem.Slot2);
 
 // prevent attempt swap same item to current position generated by client at special checting sequence
 if (swapInvItem.Slot1 == swapInvItem.Slot2)
 return;
 
 if (!_player->IsValidPos(INVENTORY_SLOT_BAG_0, swapInvItem.Slot1, true))
 {
 _player->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND);
 return;
 }
 
 if (!_player->IsValidPos(INVENTORY_SLOT_BAG_0, swapInvItem.Slot2, true))
 {
 _player->SendEquipError(EQUIP_ERR_WRONG_SLOT);
 return;
 }
 
 if (_player->IsBankPos(INVENTORY_SLOT_BAG_0, swapInvItem.Slot1) && !CanUseBank())
 {
 TC_LOG_DEBUG("network", "HandleSwapInvItemOpcode - Unit ({}) not found or you can't interact with him.", _player->PlayerTalkClass->GetInteractionData().SourceGuid.ToString());
 return;
 }
 
 if (_player->IsBankPos(INVENTORY_SLOT_BAG_0, swapInvItem.Slot2) && !CanUseBank())
 {
 TC_LOG_DEBUG("network", "HandleSwapInvItemOpcode - Unit ({}) not found or you can't interact with him.", _player->PlayerTalkClass->GetInteractionData().SourceGuid.ToString());
 return;
 }
 
 uint16 src = ((INVENTORY_SLOT_BAG_0 << 8) | swapInvItem.Slot1);
 uint16 dst = ((INVENTORY_SLOT_BAG_0 << 8) | swapInvItem.Slot2);
 
 _player->SwapItem(src, dst);
}
 
void WorldSession::HandleAutoEquipItemSlotOpcode(WorldPackets::Item::AutoEquipItemSlot& autoEquipItemSlot)
{
 // cheating attempt, client should never send opcode in that case
 if (autoEquipItemSlot.Inv.Items.size() != 1 || !Player::IsEquipmentPos(INVENTORY_SLOT_BAG_0, autoEquipItemSlot.ItemDstSlot))
 return;
 
 Item* item = _player->GetItemByGuid(autoEquipItemSlot.Item);
 uint16 dstPos = autoEquipItemSlot.ItemDstSlot | (INVENTORY_SLOT_BAG_0 << 8);
 uint16 srcPos = autoEquipItemSlot.Inv.Items[0].Slot | (uint32(autoEquipItemSlot.Inv.Items[0].ContainerSlot) << 8);
 
 if (!item || item->GetPos() != srcPos || srcPos == dstPos)
 return;
 
 _player->SwapItem(srcPos, dstPos);
}
 
void WorldSession::HandleSwapItem(WorldPackets::Item::SwapItem& swapItem)
{
 if (swapItem.Inv.Items.size() != 2)
 {
 TC_LOG_ERROR("network", "HandleSwapItem - Invalid itemCount ({})", swapItem.Inv.Items.size());
 return;
 }
 
 TC_LOG_DEBUG("network", "HandleSwapItem: receive ContainerSlotA: {}, SlotA: {}, ContainerSlotB: {}, SlotB: {}",
 swapItem.ContainerSlotA, swapItem.SlotA, swapItem.ContainerSlotB, swapItem.SlotB);
 
 uint16 src = ((swapItem.ContainerSlotA << 8) | swapItem.SlotA);
 uint16 dst = ((swapItem.ContainerSlotB << 8) | swapItem.SlotB);
 
 // prevent attempt swap same item to current position generated by client at special checting sequence
 if (src == dst)
 return;
 
 if (!_player->IsValidPos(swapItem.ContainerSlotA, swapItem.SlotA, true))
 {
 _player->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND);
 return;
 }
 
 if (!_player->IsValidPos(swapItem.ContainerSlotB, swapItem.SlotB, true))
 {
 _player->SendEquipError(EQUIP_ERR_WRONG_SLOT);
 return;
 }
 
 if (_player->IsBankPos(swapItem.ContainerSlotA, swapItem.SlotA) && !CanUseBank())
 {
 TC_LOG_DEBUG("network", "HandleSwapItem - Unit ({}) not found or you can't interact with him.", _player->PlayerTalkClass->GetInteractionData().SourceGuid.ToString());
 return;
 }
 
 if (_player->IsBankPos(swapItem.ContainerSlotB, swapItem.SlotB) && !CanUseBank())
 {
 TC_LOG_DEBUG("network", "HandleSwapItem - Unit ({}) not found or you can't interact with him.", _player->PlayerTalkClass->GetInteractionData().SourceGuid.ToString());
 return;
 }
 
 _player->SwapItem(src, dst);
}
 
void WorldSession::HandleAutoEquipItemOpcode(WorldPackets::Item::AutoEquipItem& autoEquipItem)
{
 if (autoEquipItem.Inv.Items.size() != 1)
 {
 TC_LOG_ERROR("network", "HandleAutoEquipItemOpcode - Invalid itemCount ({})", autoEquipItem.Inv.Items.size());
 return;
 }
 
 TC_LOG_DEBUG("network", "HandleAutoEquipItemOpcode: receive PackSlot: {}, Slot: {}",
 autoEquipItem.PackSlot, autoEquipItem.Slot);
 
 Item* srcItem = _player->GetItemByPos(autoEquipItem.PackSlot, autoEquipItem.Slot);
 if (!srcItem)
 return; // only at cheat
 
 uint16 dest;
 InventoryResult msg = _player->CanEquipItem(NULL_SLOT, dest, srcItem, !srcItem->IsBag());
 if (msg != EQUIP_ERR_OK)
 {
 _player->SendEquipError(msg, srcItem);
 return;
 }
 
 uint16 src = srcItem->GetPos();
 if (dest == src) // prevent equip in same slot, only at cheat
 return;
 
 Item* dstItem = _player->GetItemByPos(dest);
 if (!dstItem) // empty slot, simple case
 {
 if (!srcItem->GetChildItem().IsEmpty())
 {
 InventoryResult childEquipResult = _player->CanEquipChildItem(srcItem);
 if (childEquipResult != EQUIP_ERR_OK)
 {
 _player->SendEquipError(msg, srcItem);
 return;
 }
 }
 
 _player->RemoveItem(autoEquipItem.PackSlot, autoEquipItem.Slot, true);
 _player->EquipItem(dest, srcItem, true);
 if (!srcItem->GetChildItem().IsEmpty())
 _player->EquipChildItem(autoEquipItem.PackSlot, autoEquipItem.Slot, srcItem);
 
 _player->AutoUnequipOffhandIfNeed();
 }
 else // have currently equipped item, not simple case
 {
 uint8 dstbag = dstItem->GetBagSlot();
 uint8 dstslot = dstItem->GetSlot();
 
 msg = _player->CanUnequipItem(dest, !srcItem->IsBag());
 if (msg != EQUIP_ERR_OK)
 {
 _player->SendEquipError(msg, dstItem);
 return;
 }
 
 if (!dstItem->HasItemFlag(ITEM_FIELD_FLAG_CHILD))
 {
 // check dest->src move possibility
 ItemPosCountVec sSrc;
 uint16 eSrc = 0;
 if (_player->IsInventoryPos(src))
 {
 msg = _player->CanStoreItem(autoEquipItem.PackSlot, autoEquipItem.Slot, sSrc, dstItem, true);
 if (msg != EQUIP_ERR_OK)
 msg = _player->CanStoreItem(autoEquipItem.PackSlot, NULL_SLOT, sSrc, dstItem, true);
 if (msg != EQUIP_ERR_OK)
 msg = _player->CanStoreItem(NULL_BAG, NULL_SLOT, sSrc, dstItem, true);
 }
 else if (_player->IsBankPos(src))
 {
 msg = _player->CanBankItem(autoEquipItem.PackSlot, autoEquipItem.Slot, sSrc, dstItem, true);
 if (msg != EQUIP_ERR_OK)
 msg = _player->CanBankItem(autoEquipItem.PackSlot, NULL_SLOT, sSrc, dstItem, true);
 if (msg != EQUIP_ERR_OK)
 msg = _player->CanBankItem(NULL_BAG, NULL_SLOT, sSrc, dstItem, true);
 }
 else if (_player->IsEquipmentPos(src))
 {
 msg = _player->CanEquipItem(autoEquipItem.Slot, eSrc, dstItem, true);
 if (msg == EQUIP_ERR_OK)
 msg = _player->CanUnequipItem(eSrc, true);
 }
 
 if (msg == EQUIP_ERR_OK && Player::IsEquipmentPos(dest) && !srcItem->GetChildItem().IsEmpty())
 msg = _player->CanEquipChildItem(srcItem);
 
 if (msg != EQUIP_ERR_OK)
 {
 _player->SendEquipError(msg, dstItem, srcItem);
 return;
 }
 
 // now do moves, remove...
 _player->RemoveItem(dstbag, dstslot, false);
 _player->RemoveItem(autoEquipItem.PackSlot, autoEquipItem.Slot, false);
 
 // add to dest
 _player->EquipItem(dest, srcItem, true);
 
 // add to src
 if (_player->IsInventoryPos(src))
 _player->StoreItem(sSrc, dstItem, true);
 else if (_player->IsBankPos(src))
 _player->BankItem(sSrc, dstItem, true);
 else if (_player->IsEquipmentPos(src))
 _player->EquipItem(eSrc, dstItem, true);
 
 if (Player::IsEquipmentPos(dest) && !srcItem->GetChildItem().IsEmpty())
 _player->EquipChildItem(autoEquipItem.PackSlot, autoEquipItem.Slot, srcItem);
 }
 else
 {
 if (Item* parentItem = _player->GetItemByGuid(dstItem->GetCreator()))
 {
 if (Player::IsEquipmentPos(dest))
 {
 _player->AutoUnequipChildItem(parentItem);
 // dest is now empty
 _player->SwapItem(src, dest);
 // src is now empty
 _player->SwapItem(parentItem->GetPos(), src);
 }
 }
 }
 
 _player->AutoUnequipOffhandIfNeed();
 
 // if inventory item was moved, check if we can remove dependent auras, because they were not removed in Player::RemoveItem (update was set to false)
 // do this after swaps are done, we pass nullptr because both weapons could be swapped and none of them should be ignored
 if ((autoEquipItem.PackSlot == INVENTORY_SLOT_BAG_0 && autoEquipItem.Slot < INVENTORY_SLOT_BAG_END) || (dstbag == INVENTORY_SLOT_BAG_0 && dstslot < INVENTORY_SLOT_BAG_END))
 _player->ApplyItemDependentAuras((Item*)nullptr, false);
 }
}
 
void WorldSession::HandleDestroyItemOpcode(WorldPackets::Item::DestroyItem& destroyItem)
{
 TC_LOG_DEBUG("network", "HandleDestroyItemOpcode: receive ContainerId: {}, SlotNum: {}, Count: {}",
 destroyItem.ContainerId, destroyItem.SlotNum, destroyItem.Count);
 
 uint16 pos = (destroyItem.ContainerId << 8) | destroyItem.SlotNum;
 
 // prevent drop unequipable items (in combat, for example) and non-empty bags
 if (_player->IsEquipmentPos(pos) || _player->IsBagPos(pos))
 {
 InventoryResult msg = _player->CanUnequipItem(pos, false);
 if (msg != EQUIP_ERR_OK)
 {
 _player->SendEquipError(msg, _player->GetItemByPos(pos));
 return;
 }
 }
 
 Item* item = _player->GetItemByPos(destroyItem.ContainerId, destroyItem.SlotNum);
 if (!item)
 {
 _player->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND);
 return;
 }
 
 if (item->GetTemplate()->HasFlag(ITEM_FLAG_NO_USER_DESTROY))
 {
 _player->SendEquipError(EQUIP_ERR_DROP_BOUND_ITEM, nullptr, nullptr);
 return;
 }
 
 if (destroyItem.Count)
 {
 uint32 i_count = destroyItem.Count;
 _player->DestroyItemCount(item, i_count, true);
 }
 else
 _player->DestroyItem(destroyItem.ContainerId, destroyItem.SlotNum, true);
}
 
void WorldSession::HandleReadItem(WorldPackets::Item::ReadItem& readItem)
{
 Item* item = _player->GetItemByPos(readItem.PackSlot, readItem.Slot);
 if (item && item->GetTemplate()->GetPageText())
 {
 InventoryResult msg = _player->CanUseItem(item);
 if (msg == EQUIP_ERR_OK)
 {
 WorldPackets::Item::ReadItemResultOK packet;
 packet.Item = item->GetGUID();
 SendPacket(packet.Write());
 
 TC_LOG_INFO("network", "STORAGE: Item page sent");
 }
 else
 {
 /*WorldPackets::Item::ReadItemResultFailed packet;
 packet.Item = item->GetGUID();
 packet.Subcode = ??;
 packet.Delay = ??;
 SendPacket(packet.Write());*/
 
 TC_LOG_INFO("network", "STORAGE: Unable to read item");
 _player->SendEquipError(msg, item, nullptr);
 }
 }
 else
 _player->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, nullptr, nullptr);
}
 
void WorldSession::HandleSellItemOpcode(WorldPackets::Item::SellItem& packet)
{
 TC_LOG_DEBUG("network", "WORLD: Received CMSG_SELL_ITEM: Vendor {}, Item {}, Amount: {}",
 packet.VendorGUID.ToString(), packet.ItemGUID.ToString(), packet.Amount);
 
 if (packet.ItemGUID.IsEmpty())
 return;
 
 Creature* creature = GetPlayer()->GetNPCIfCanInteractWith(packet.VendorGUID, UNIT_NPC_FLAG_VENDOR, UNIT_NPC_FLAG_2_NONE);
 if (!creature)
 {
 TC_LOG_DEBUG("network", "WORLD: HandleSellItemOpcode - {} not found or you can not interact with him.", packet.VendorGUID.ToString());
 _player->SendSellError(SELL_ERR_CANT_FIND_VENDOR, nullptr, packet.ItemGUID);
 return;
 }
 
 if ((creature->GetCreatureTemplate()->flags_extra & CREATURE_FLAG_EXTRA_NO_SELL_VENDOR) != 0)
 {
 _player->SendSellError(SELL_ERR_CANT_SELL_TO_THIS_MERCHANT, creature, packet.ItemGUID);
 return;
 }
 
 // remove fake death
 if (GetPlayer()->HasUnitState(UNIT_STATE_DIED))
 GetPlayer()->RemoveAurasByType(SPELL_AURA_FEIGN_DEATH);
 
 Item* pItem = _player->GetItemByGuid(packet.ItemGUID);
 if (pItem)
 {
 // prevent sell not owner item
 if (_player->GetGUID() != pItem->GetOwnerGUID())
 {
 _player->SendSellError(SELL_ERR_CANT_SELL_ITEM, creature, packet.ItemGUID);
 return;
 }
 
 // prevent sell non empty bag by drag-and-drop at vendor's item list
 if (pItem->IsNotEmptyBag())
 {
 _player->SendSellError(SELL_ERR_CANT_SELL_ITEM, creature, packet.ItemGUID);
 return;
 }
 
 // prevent sell currently looted item
 if (_player->GetLootGUID() == pItem->GetGUID())
 {
 _player->SendSellError(SELL_ERR_CANT_SELL_ITEM, creature, packet.ItemGUID);
 return;
 }
 
 // prevent selling item for sellprice when the item is still refundable
 // this probably happens when right clicking a refundable item, the client sends both
 // CMSG_SELL_ITEM and CMSG_REFUND_ITEM (unverified)
 if (pItem->IsRefundable())
 return; // Therefore, no feedback to client
 
 // special case at auto sell (sell all)
 if (packet.Amount == 0)
 packet.Amount = pItem->GetCount();
 else
 {
 // prevent sell more items that exist in stack (possible only not from client)
 if (packet.Amount > pItem->GetCount())
 {
 _player->SendSellError(SELL_ERR_CANT_SELL_ITEM, creature, packet.ItemGUID);
 return;
 }
 }
 
 ItemTemplate const* pProto = pItem->GetTemplate();
 if (pProto)
 {
 if (pProto->GetSellPrice() > 0)
 {
 uint64 money = uint64(pProto->GetSellPrice()) * packet.Amount;
 
 if (!_player->ModifyMoney(money)) // ensure player doesn't exceed gold limit
 {
 _player->SendSellError(SELL_ERR_CANT_SELL_ITEM, creature, packet.ItemGUID);
 return;
 }
 
 _player->UpdateCriteria(CriteriaType::MoneyEarnedFromSales, money);
 _player->UpdateCriteria(CriteriaType::SellItemsToVendors, 1);
 
 if (packet.Amount < pItem->GetCount()) // need split items
 {
 Item* pNewItem = pItem->CloneItem(packet.Amount, _player);
 if (!pNewItem)
 {
 TC_LOG_ERROR("network", "WORLD: HandleSellItemOpcode - could not create clone of item {}; count = {}", pItem->GetEntry(), packet.Amount);
 _player->SendSellError(SELL_ERR_CANT_SELL_ITEM, creature, packet.ItemGUID);
 return;
 }
 
 pItem->SetCount(pItem->GetCount() - packet.Amount);
 _player->ItemRemovedQuestCheck(pItem->GetEntry(), packet.Amount);
 if (_player->IsInWorld())
 pItem->SendUpdateToPlayer(_player);
 pItem->SetState(ITEM_CHANGED, _player);
 
 _player->AddItemToBuyBackSlot(pNewItem);
 if (_player->IsInWorld())
 pNewItem->SendUpdateToPlayer(_player);
 }
 else
 {
 _player->RemoveItem(pItem->GetBagSlot(), pItem->GetSlot(), true);
 _player->ItemRemovedQuestCheck(pItem->GetEntry(), pItem->GetCount());
 RemoveItemFromUpdateQueueOf(pItem, _player);
 _player->AddItemToBuyBackSlot(pItem);
 }
 }
 else
 _player->SendSellError(SELL_ERR_CANT_SELL_ITEM, creature, packet.ItemGUID);
 return;
 }
 }
 _player->SendSellError(SELL_ERR_CANT_FIND_ITEM, creature, packet.ItemGUID);
 return;
}
 
void WorldSession::HandleBuybackItem(WorldPackets::Item::BuyBackItem& packet)
{
 TC_LOG_DEBUG("network", "WORLD: Received CMSG_BUYBACK_ITEM: Vendor {}, Slot: {}", packet.VendorGUID.ToString(), packet.Slot);
 
 Creature* creature = GetPlayer()->GetNPCIfCanInteractWith(packet.VendorGUID, UNIT_NPC_FLAG_VENDOR, UNIT_NPC_FLAG_2_NONE);
 if (!creature)
 {
 TC_LOG_DEBUG("network", "WORLD: HandleBuybackItem - Unit ({}) not found or you can not interact with him.", packet.VendorGUID.ToString());
 _player->SendSellError(SELL_ERR_CANT_FIND_VENDOR, nullptr, ObjectGuid::Empty);
 return;
 }
 
 // remove fake death
 if (GetPlayer()->HasUnitState(UNIT_STATE_DIED))
 GetPlayer()->RemoveAurasByType(SPELL_AURA_FEIGN_DEATH);
 
 Item* pItem = _player->GetItemFromBuyBackSlot(packet.Slot);
 if (pItem)
 {
 uint32 price = _player->m_activePlayerData->BuybackPrice[packet.Slot - BUYBACK_SLOT_START];
 if (!_player->HasEnoughMoney(uint64(price)))
 {
 _player->SendBuyError(BUY_ERR_NOT_ENOUGHT_MONEY, creature, pItem->GetEntry(), 0);
 return;
 }
 
 ItemPosCountVec dest;
 InventoryResult msg = _player->CanStoreItem(NULL_BAG, NULL_SLOT, dest, pItem, false);
 if (msg == EQUIP_ERR_OK)
 {
 _player->ModifyMoney(-(int32)price);
 _player->RemoveItemFromBuyBackSlot(packet.Slot, false);
 _player->ItemAddedQuestCheck(pItem->GetEntry(), pItem->GetCount());
 _player->StoreItem(dest, pItem, true);
 }
 else
 _player->SendEquipError(msg, pItem, nullptr);
 return;
 }
 else
 _player->SendBuyError(BUY_ERR_CANT_FIND_ITEM, creature, 0, 0);
}
 
void WorldSession::HandleBuyItemOpcode(WorldPackets::Item::BuyItem& packet)
{
 // client expects count starting at 1, and we send vendorslot+1 to client already
 if (packet.Muid > 0)
 --packet.Muid;
 else
 return; // cheating
 
 switch (packet.ItemType)
 {
 case ITEM_VENDOR_TYPE_ITEM:
 {
 Item* bagItem = _player->GetItemByGuid(packet.ContainerGUID);
 
 uint8 bag = NULL_BAG;
 if (bagItem && bagItem->IsBag())
 bag = bagItem->GetSlot();
 else if (packet.ContainerGUID == GetPlayer()->GetGUID()) // The client sends the player guid when trying to store an item in the default backpack
 bag = INVENTORY_SLOT_BAG_0;
 
 GetPlayer()->BuyItemFromVendorSlot(packet.VendorGUID, packet.Muid, packet.Item.ItemID,
 packet.Quantity, bag, packet.Slot);
 break;
 }
 case ITEM_VENDOR_TYPE_CURRENCY:
 {
 GetPlayer()->BuyCurrencyFromVendorSlot(packet.VendorGUID, packet.Muid, packet.Item.ItemID, packet.Quantity);
 break;
 }
 default:
 {
 TC_LOG_DEBUG("network", "WORLD: received wrong itemType ({}) in HandleBuyItemOpcode", packet.ItemType);
 break;
 }
 }
}
 
void WorldSession::HandleListInventoryOpcode(WorldPackets::NPC::Hello& packet)
{
 if (!GetPlayer()->IsAlive())
 return;
 
 SendListInventory(packet.Unit);
}
 
void WorldSession::SendListInventory(ObjectGuid vendorGuid)
{
 Creature* vendor = GetPlayer()->GetNPCIfCanInteractWith(vendorGuid, UNIT_NPC_FLAG_VENDOR, UNIT_NPC_FLAG_2_NONE);
 if (!vendor)
 {
 TC_LOG_DEBUG("network", "WORLD: SendListInventory - {} not found or you can not interact with him.", vendorGuid.ToString());
 _player->SendSellError(SELL_ERR_CANT_FIND_VENDOR, nullptr, ObjectGuid::Empty);
 return;
 }
 
 // remove fake death
 if (GetPlayer()->HasUnitState(UNIT_STATE_DIED))
 GetPlayer()->RemoveAurasByType(SPELL_AURA_FEIGN_DEATH);
 
 // Stop the npc if moving
 if (uint32 pause = vendor->GetMovementTemplate().GetInteractionPauseTimer())
 vendor->PauseMovement(pause);
 vendor->SetHomePosition(vendor->GetPosition());
 
 VendorItemData const* vendorItems = vendor->GetVendorItems();
 uint32 rawItemCount = vendorItems ? vendorItems->GetItemCount() : 0;
 
 WorldPackets::NPC::VendorInventory packet;
 packet.Vendor = vendor->GetGUID();
 
 packet.Items.resize(rawItemCount);
 
 const float discountMod = _player->GetReputationPriceDiscount(vendor);
 uint8 count = 0;
 for (uint32 slot = 0; slot < rawItemCount; ++slot)
 {
 VendorItem const* vendorItem = vendorItems->GetItem(slot);
 if (!vendorItem)
 continue;
 
 WorldPackets::NPC::VendorItem& item = packet.Items[count];
 
 if (PlayerConditionEntry const* playerCondition = sPlayerConditionStore.LookupEntry(vendorItem->PlayerConditionId))
 if (!ConditionMgr::IsPlayerMeetingCondition(_player, playerCondition))
 item.PlayerConditionFailed = playerCondition->ID;
 
 if (vendorItem->Type == ITEM_VENDOR_TYPE_ITEM)
 {
 ItemTemplate const* itemTemplate = sObjectMgr->GetItemTemplate(vendorItem->item);
 if (!itemTemplate)
 continue;
 
 int32 leftInStock = !vendorItem->maxcount ? -1 : vendor->GetVendorItemCurrentCount(vendorItem);
 if (!_player->IsGameMaster()) // ignore conditions if GM on
 {
 // Respect allowed class
 if (!(itemTemplate->GetAllowableClass() & _player->GetClassMask()) && itemTemplate->GetBonding() == BIND_ON_ACQUIRE)
 continue;
 
 // Only display items in vendor lists for the team the player is on
 if ((itemTemplate->HasFlag(ITEM_FLAG2_FACTION_HORDE) && _player->GetTeam() == ALLIANCE) ||
 (itemTemplate->HasFlag(ITEM_FLAG2_FACTION_ALLIANCE) && _player->GetTeam() == HORDE))
 continue;
 
 // Items sold out are not displayed in list
 if (leftInStock == 0)
 continue;
 }
 
 if (!sConditionMgr->IsObjectMeetingVendorItemConditions(vendor->GetEntry(), vendorItem->item, _player, vendor))
 {
 TC_LOG_DEBUG("condition", "SendListInventory: conditions not met for creature entry {} item {}", vendor->GetEntry(), vendorItem->item);
 continue;
 }
 
 uint64 price = uint64(floor(itemTemplate->GetBuyPrice() * discountMod));
 price = itemTemplate->GetBuyPrice() > 0 ? std::max(uint64(1), price) : price;
 
 if (int32 priceMod = _player->GetTotalAuraModifier(SPELL_AURA_MOD_VENDOR_ITEMS_PRICES))
 price -= CalculatePct(price, priceMod);
 
 item.MuID = slot + 1; // client expects counting to start at 1
 item.Durability = itemTemplate->MaxDurability;
 item.ExtendedCostID = vendorItem->ExtendedCost;
 item.Type = vendorItem->Type;
 item.Quantity = leftInStock;
 item.StackCount = itemTemplate->GetBuyCount();
 item.Price = price;
 item.DoNotFilterOnVendor = vendorItem->IgnoreFiltering;
 item.Refundable = itemTemplate->HasFlag(ITEM_FLAG_ITEM_PURCHASE_RECORD) && vendorItem->ExtendedCost && itemTemplate->GetMaxStackSize() == 1;
 
 item.Item.ItemID = vendorItem->item;
 if (!vendorItem->BonusListIDs.empty())
 {
 item.Item.ItemBonus.emplace();
 item.Item.ItemBonus->BonusListIDs = vendorItem->BonusListIDs;
 }
 }
 else if (vendorItem->Type == ITEM_VENDOR_TYPE_CURRENCY)
 {
 CurrencyTypesEntry const* currencyTemplate = sCurrencyTypesStore.LookupEntry(vendorItem->item);
 if (!currencyTemplate)
 continue;
 
 if (!vendorItem->ExtendedCost)
 continue; // there's no price defined for currencies, only extendedcost is used
 
 item.MuID = slot + 1; // client expects counting to start at 1
 item.ExtendedCostID = vendorItem->ExtendedCost;
 item.Item.ItemID = vendorItem->item;
 item.Type = vendorItem->Type;
 item.StackCount = vendorItem->maxcount;
 item.DoNotFilterOnVendor = vendorItem->IgnoreFiltering;
 }
 else
 continue;
 
 if (++count >= MAX_VENDOR_ITEMS)
 break;
 }
 
 // Resize vector to real size (some items can be skipped due to checks)
 packet.Items.resize(count);
 
 packet.Reason = AsUnderlyingType(count ? VendorInventoryReason::None : VendorInventoryReason::Empty);
 
 SendPacket(packet.Write());
}
 
void WorldSession::HandleAutoStoreBagItemOpcode(WorldPackets::Item::AutoStoreBagItem& packet)
{
 if (!packet.Inv.Items.empty())
 {
 TC_LOG_ERROR("network", "HandleAutoStoreBagItemOpcode - Invalid itemCount ({})", packet.Inv.Items.size());
 return;
 }
 
 TC_LOG_DEBUG("network", "HandleAutoStoreBagItemOpcode: receive ContainerSlotA: {}, SlotA: {}, ContainerSlotB: {}",
 packet.ContainerSlotA, packet.SlotA, packet.ContainerSlotB);
 
 Item* item = _player->GetItemByPos(packet.ContainerSlotA, packet.SlotA);
 if (!item)
 return;
 
 if (!_player->IsValidPos(packet.ContainerSlotB, NULL_SLOT, false)) // can be autostore pos
 {
 _player->SendEquipError(EQUIP_ERR_WRONG_SLOT);
 return;
 }
 
 uint16 src = item->GetPos();
 
 // check unequip potability for equipped items and bank bags
 if (_player->IsEquipmentPos(src) || _player->IsBagPos(src))
 {
 InventoryResult msg = _player->CanUnequipItem(src, !_player->IsBagPos(src));
 if (msg != EQUIP_ERR_OK)
 {
 _player->SendEquipError(msg, item);
 return;
 }
 }
 
 ItemPosCountVec dest;
 InventoryResult msg = _player->CanStoreItem(packet.ContainerSlotB, NULL_SLOT, dest, item, false);
 if (msg != EQUIP_ERR_OK)
 {
 _player->SendEquipError(msg, item);
 return;
 }
 
 // no-op: placed in same slot
 if (dest.size() == 1 && dest[0].pos == src)
 {
 // just remove grey item state
 _player->SendEquipError(EQUIP_ERR_INTERNAL_BAG_ERROR, item);
 return;
 }
 
 _player->RemoveItem(packet.ContainerSlotA, packet.SlotA, true);
 _player->StoreItem(dest, item, true);
}
 
void WorldSession::SendEnchantmentLog(ObjectGuid owner, ObjectGuid caster, ObjectGuid itemGuid, uint32 itemId, uint32 enchantId, uint32 enchantSlot)
{
 WorldPackets::Item::EnchantmentLog enchantmentLog;
 enchantmentLog.Owner = owner;
 enchantmentLog.Caster = caster;
 enchantmentLog.ItemGUID = itemGuid;
 enchantmentLog.ItemID = itemId;
 enchantmentLog.Enchantment = enchantId;
 enchantmentLog.EnchantSlot = enchantSlot;
 GetPlayer()->SendMessageToSet(enchantmentLog.Write(), true);
}
 
void WorldSession::SendItemEnchantTimeUpdate(ObjectGuid Playerguid, ObjectGuid Itemguid, uint32 slot, uint32 Duration)
{
 WorldPackets::Item::ItemEnchantTimeUpdate data;
 data.ItemGuid = Itemguid;
 data.DurationLeft = Duration;
 data.Slot = slot;
 data.OwnerGuid = Playerguid;
 SendPacket(data.Write());
}
 
void WorldSession::HandleWrapItem(WorldPackets::Item::WrapItem& packet)
{
 if (packet.Inv.Items.size() != 2)
 {
 TC_LOG_ERROR("network", "HandleWrapItem - Invalid itemCount ({})", packet.Inv.Items.size());
 return;
 }
 
 // Gift
 uint8 giftContainerSlot = packet.Inv.Items[0].ContainerSlot;
 uint8 giftSlot = packet.Inv.Items[0].Slot;
 // Item
 uint8 itemContainerSlot = packet.Inv.Items[1].ContainerSlot;
 uint8 itemSlot = packet.Inv.Items[1].Slot;
 
 TC_LOG_DEBUG("network", "HandleWrapItem - Receive giftContainerSlot = {}, giftSlot = {}, itemContainerSlot = {}, itemSlot = {}", giftContainerSlot, giftSlot, itemContainerSlot, itemSlot);
 
 Item* gift = _player->GetItemByPos(giftContainerSlot, giftSlot);
 if (!gift)
 {
 _player->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, gift, nullptr);
 return;
 }
 
 if (!gift->GetTemplate()->HasFlag(ITEM_FLAG_IS_WRAPPER)) // cheating: non-wrapper wrapper
 {
 _player->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, gift, nullptr);
 return;
 }
 
 Item* item = _player->GetItemByPos(itemContainerSlot, itemSlot);
 if (!item)
 {
 _player->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, item, nullptr);
 return;
 }
 
 if (item == gift) // not possable with pacjket from real client
 {
 _player->SendEquipError(EQUIP_ERR_CANT_WRAP_WRAPPED, item, nullptr);
 return;
 }
 
 if (item->IsEquipped())
 {
 _player->SendEquipError(EQUIP_ERR_CANT_WRAP_EQUIPPED, item, nullptr);
 return;
 }
 
 if (!item->GetGiftCreator().IsEmpty()) // HasFlag(ITEM_FIELD_FLAGS, ITEM_FLAGS_WRAPPED);
 {
 _player->SendEquipError(EQUIP_ERR_CANT_WRAP_WRAPPED, item, nullptr);
 return;
 }
 
 if (item->IsBag())
 {
 _player->SendEquipError(EQUIP_ERR_CANT_WRAP_BAGS, item, nullptr);
 return;
 }
 
 if (item->IsSoulBound())
 {
 _player->SendEquipError(EQUIP_ERR_CANT_WRAP_BOUND, item, nullptr);
 return;
 }
 
 if (item->GetMaxStackCount() != 1)
 {
 _player->SendEquipError(EQUIP_ERR_CANT_WRAP_STACKABLE, item, nullptr);
 return;
 }
 
 // maybe not correct check (it is better than nothing)
 if (item->GetTemplate()->GetMaxCount() > 0)
 {
 _player->SendEquipError(EQUIP_ERR_CANT_WRAP_UNIQUE, item, nullptr);
 return;
 }
 
 CharacterDatabaseTransaction trans = CharacterDatabase.BeginTransaction();
 
 CharacterDatabasePreparedStatement* stmt = CharacterDatabase.GetPreparedStatement(CHAR_INS_CHAR_GIFT);
 stmt->setUInt64(0, item->GetOwnerGUID().GetCounter());
 stmt->setUInt64(1, item->GetGUID().GetCounter());
 stmt->setUInt32(2, item->GetEntry());
 stmt->setUInt32(3, item->m_itemData->DynamicFlags);
 trans->Append(stmt);
 
 item->SetEntry(gift->GetEntry());
 
 switch (item->GetEntry())
 {
 case 5042:
 item->SetEntry(5043);
 break;
 case 5048:
 item->SetEntry(5044);
 break;
 case 17303:
 item->SetEntry(17302);
 break;
 case 17304:
 item->SetEntry(17305);
 break;
 case 17307:
 item->SetEntry(17308);
 break;
 case 21830:
 item->SetEntry(21831);
 break;
 }
 
 item->SetGiftCreator(_player->GetGUID());
 item->ReplaceAllItemFlags(ITEM_FIELD_FLAG_WRAPPED);
 item->SetState(ITEM_CHANGED, _player);
 
 if (item->GetState() == ITEM_NEW) // save new item, to have alway for `character_gifts` record in `item_instance`
 {
 // after save it will be impossible to remove the item from the queue
 RemoveItemFromUpdateQueueOf(item, _player);
 item->SaveToDB(trans); // item gave inventory record unchanged and can be save standalone
 }
 CharacterDatabase.CommitTransaction(trans);
 
 uint32 count = 1;
 _player->DestroyItemCount(gift, count, true);
}
 
void WorldSession::HandleSocketGems(WorldPackets::Item::SocketGems& socketGems)
{
 if (!socketGems.ItemGuid)
 return;
 
 //cheat -> tried to socket same gem multiple times
 if ((!socketGems.GemItem[0].IsEmpty() && (socketGems.GemItem[0] == socketGems.GemItem[1] || socketGems.GemItem[0] == socketGems.GemItem[2])) ||
 (!socketGems.GemItem[1].IsEmpty() && (socketGems.GemItem[1] == socketGems.GemItem[2])))
 return;
 
 Item* itemTarget = _player->GetItemByGuid(socketGems.ItemGuid);
 if (!itemTarget) //missing item to socket
 return;
 
 ItemTemplate const* itemProto = itemTarget->GetTemplate();
 if (!itemProto)
 return;
 
 //this slot is excepted when applying / removing meta gem bonus
 uint8 slot = itemTarget->IsEquipped() ? itemTarget->GetSlot() : uint8(NULL_SLOT);
 
 Item* gems[MAX_GEM_SOCKETS];
 memset(gems, 0, sizeof(gems));
 ItemDynamicFieldGems gemData[MAX_GEM_SOCKETS];
 memset(gemData, 0, sizeof(gemData));
 GemPropertiesEntry const* gemProperties[MAX_GEM_SOCKETS];
 memset(gemProperties, 0, sizeof(gemProperties));
 UF::SocketedGem const* oldGemData[MAX_GEM_SOCKETS];
 memset(oldGemData, 0, sizeof(oldGemData));
 for (uint32 i = 0; i < MAX_GEM_SOCKETS; ++i)
 {
 if (Item* gem = _player->GetItemByGuid(socketGems.GemItem[i]))
 {
 gems[i] = gem;
 gemData[i].ItemId = gem->GetEntry();
 gemData[i].Context = gem->m_itemData->Context;
 for (std::size_t b = 0; b < gem->GetBonusListIDs().size() && b < 16; ++b)
 gemData[i].BonusListIDs[b] = gem->GetBonusListIDs()[b];
 
 gemProperties[i] = sGemPropertiesStore.LookupEntry(gem->GetTemplate()->GetGemProperties());
 }
 
 oldGemData[i] = itemTarget->GetGem(i);
 }
 
 // Find first prismatic socket
 uint32 firstPrismatic = 0;
 while (firstPrismatic < MAX_GEM_SOCKETS && itemTarget->GetSocketColor(firstPrismatic))
 ++firstPrismatic;
 
 for (uint32 i = 0; i < MAX_GEM_SOCKETS; ++i) //check for hack maybe
 {
 if (!gemProperties[i])
 continue;
 
 // tried to put gem in socket where no socket exists (take care about prismatic sockets)
 if (!itemTarget->GetSocketColor(i))
 {
 // no prismatic socket
 if (!itemTarget->GetEnchantmentId(PRISMATIC_ENCHANTMENT_SLOT))
 return;
 
 if (i != firstPrismatic)
 return;
 }
 
 // Gem must match socket color
 if (SocketColorToGemTypeMask[itemTarget->GetSocketColor(i)] != gemProperties[i]->Type)
 {
 // unless its red, blue, yellow or prismatic
 if (!(SocketColorToGemTypeMask[itemTarget->GetSocketColor(i)] & SOCKET_COLOR_PRISMATIC) || !(gemProperties[i]->Type & SOCKET_COLOR_PRISMATIC))
 return;
 }
 }
 
 // check unique-equipped conditions
 for (uint32 i = 0; i < MAX_GEM_SOCKETS; ++i)
 {
 if (!gems[i])
 continue;
 
 // continue check for case when attempt add 2 similar unique equipped gems in one item.
 ItemTemplate const* iGemProto = gems[i]->GetTemplate();
 
 // unique item (for new and already placed bit removed enchantments
 if (iGemProto->HasFlag(ITEM_FLAG_UNIQUE_EQUIPPABLE))
 {
 for (uint32 j = 0; j < MAX_GEM_SOCKETS; ++j)
 {
 if (i == j) // skip self
 continue;
 
 if (gems[j])
 {
 if (iGemProto->GetId() == gems[j]->GetEntry())
 {
 _player->SendEquipError(EQUIP_ERR_ITEM_UNIQUE_EQUIPPABLE_SOCKETED, itemTarget, nullptr);
 return;
 }
 }
 else if (oldGemData[j])
 {
 if (int32(iGemProto->GetId()) == oldGemData[j]->ItemID)
 {
 _player->SendEquipError(EQUIP_ERR_ITEM_UNIQUE_EQUIPPABLE_SOCKETED, itemTarget, nullptr);
 return;
 }
 }
 }
 }
 
 // unique limit type item
 int32 limit_newcount = 0;
 if (iGemProto->GetItemLimitCategory())
 {
 if (ItemLimitCategoryEntry const* limitEntry = sItemLimitCategoryStore.LookupEntry(iGemProto->GetItemLimitCategory()))
 {
 // NOTE: limitEntry->Flags is not checked because if item has limit then it is applied in equip case
 for (int j = 0; j < MAX_GEM_SOCKETS; ++j)
 {
 if (gems[j])
 {
 // new gem
 if (iGemProto->GetItemLimitCategory() == gems[j]->GetTemplate()->GetItemLimitCategory())
 ++limit_newcount;
 }
 else if (oldGemData[j])
 {
 // existing gem
 if (ItemTemplate const* jProto = sObjectMgr->GetItemTemplate(oldGemData[j]->ItemID))
 if (iGemProto->GetItemLimitCategory() == jProto->GetItemLimitCategory())
 ++limit_newcount;
 }
 }
 
 if (limit_newcount > 0 && uint32(limit_newcount) > _player->GetItemLimitCategoryQuantity(limitEntry))
 {
 _player->SendEquipError(EQUIP_ERR_ITEM_UNIQUE_EQUIPPABLE_SOCKETED, itemTarget, nullptr);
 return;
 }
 }
 }
 
 // for equipped item check all equipment for duplicate equipped gems
 if (itemTarget->IsEquipped())
 {
 if (InventoryResult res = _player->CanEquipUniqueItem(gems[i], slot, std::max(limit_newcount, 0)))
 {
 _player->SendEquipError(res, itemTarget, nullptr);
 return;
 }
 }
 }
 
 bool SocketBonusActivated = itemTarget->GemsFitSockets(); //save state of socketbonus
 _player->ToggleMetaGemsActive(slot, false); //turn off all metagems (except for the target item)
 
 //if a meta gem is being equipped, all information has to be written to the item before testing if the conditions for the gem are met
 
 //remove ALL mods - gem can change item level
 if (itemTarget->IsEquipped())
 _player->_ApplyItemMods(itemTarget, itemTarget->GetSlot(), false);
 
 for (uint16 i = 0; i < MAX_GEM_SOCKETS; ++i)
 {
 if (gems[i])
 {
 uint32 gemScalingLevel = _player->GetLevel();
 if (uint32 fixedLevel = gems[i]->GetModifier(ITEM_MODIFIER_TIMEWALKER_LEVEL))
 gemScalingLevel = fixedLevel;
 
 itemTarget->SetGem(i, &gemData[i], gemScalingLevel);
 
 if (gemProperties[i] && gemProperties[i]->EnchantId)
 itemTarget->SetEnchantment(EnchantmentSlot(SOCK_ENCHANTMENT_SLOT + i), gemProperties[i]->EnchantId, 0, 0, _player->GetGUID());
 
 uint32 gemCount = 1;
 _player->DestroyItemCount(gems[i], gemCount, true);
 }
 }
 
 if (itemTarget->IsEquipped())
 _player->_ApplyItemMods(itemTarget, itemTarget->GetSlot(), true);
 
 if (Item* childItem = _player->GetChildItemByGuid(itemTarget->GetChildItem()))
 {
 if (childItem->IsEquipped())
 _player->_ApplyItemMods(childItem, childItem->GetSlot(), false);
 childItem->CopyArtifactDataFromParent(itemTarget);
 if (childItem->IsEquipped())
 _player->_ApplyItemMods(childItem, childItem->GetSlot(), true);
 }
 
 bool SocketBonusToBeActivated = itemTarget->GemsFitSockets();//current socketbonus state
 if (SocketBonusActivated ^ SocketBonusToBeActivated) //if there was a change...
 {
 _player->ApplyEnchantment(itemTarget, BONUS_ENCHANTMENT_SLOT, false);
 itemTarget->SetEnchantment(BONUS_ENCHANTMENT_SLOT, (SocketBonusToBeActivated ? itemTarget->GetTemplate()->GetSocketBonus() : 0), 0, 0, _player->GetGUID());
 _player->ApplyEnchantment(itemTarget, BONUS_ENCHANTMENT_SLOT, true);
 //it is not displayed, client has an inbuilt system to determine if the bonus is activated
 }
 
 _player->ToggleMetaGemsActive(slot, true); //turn on all metagems (except for target item)
 
 _player->RemoveTradeableItem(itemTarget);
 itemTarget->ClearSoulboundTradeable(_player); // clear tradeable flag
 
 itemTarget->SendUpdateSockets();
}
 
void WorldSession::HandleCancelTempEnchantmentOpcode(WorldPackets::Item::CancelTempEnchantment& cancelTempEnchantment)
{
 // apply only to equipped item
 if (!Player::IsEquipmentPos(INVENTORY_SLOT_BAG_0, cancelTempEnchantment.Slot))
 return;
 
 Item* item = GetPlayer()->GetItemByPos(INVENTORY_SLOT_BAG_0, cancelTempEnchantment.Slot);
 
 if (!item)
 return;
 
 if (!item->GetEnchantmentId(TEMP_ENCHANTMENT_SLOT))
 return;
 
 GetPlayer()->ApplyEnchantment(item, TEMP_ENCHANTMENT_SLOT, false);
 item->ClearEnchantment(TEMP_ENCHANTMENT_SLOT);
}
 
void WorldSession::HandleGetItemPurchaseData(WorldPackets::Item::GetItemPurchaseData& packet)
{
 Item* item = _player->GetItemByGuid(packet.ItemGUID);
 if (!item)
 {
 TC_LOG_DEBUG("network", "HandleGetItemPurchaseData: Item {} not found!", packet.ItemGUID.ToString());
 return;
 }
 
 TC_LOG_DEBUG("network", "HandleGetItemPurchaseData: Item {}", packet.ItemGUID.ToString());
 
 GetPlayer()->SendRefundInfo(item);
}
 
void WorldSession::HandleItemRefund(WorldPackets::Item::ItemPurchaseRefund& packet)
{
 Item* item = _player->GetItemByGuid(packet.ItemGUID);
 if (!item)
 {
 TC_LOG_DEBUG("network", "WorldSession::HandleItemRefund: Item ({}) not found!", packet.ItemGUID.ToString());
 return;
 }
 
 // Don't try to refund item currently being disenchanted
 if (_player->GetLootGUID() == packet.ItemGUID)
 return;
 
 GetPlayer()->RefundItem(item);
}
 
bool WorldSession::CanUseBank(ObjectGuid bankerGUID) const
{
 // bankerGUID parameter is optional, set to 0 by default.
 if (!bankerGUID)
 bankerGUID = _player->PlayerTalkClass->GetInteractionData().SourceGuid;
 
 bool isUsingBankCommand = (bankerGUID == GetPlayer()->GetGUID() && bankerGUID == _player->PlayerTalkClass->GetInteractionData().SourceGuid);
 
 if (!isUsingBankCommand)
 {
 Creature* creature = GetPlayer()->GetNPCIfCanInteractWith(bankerGUID, UNIT_NPC_FLAG_BANKER, UNIT_NPC_FLAG_2_NONE);
 if (!creature)
 return false;
 }
 
 return true;
}
 
void WorldSession::HandleUseCritterItem(WorldPackets::Item::UseCritterItem& useCritterItem)
{
 Item* item = _player->GetItemByGuid(useCritterItem.ItemGuid);
 if (!item)
 return;
 
 for (ItemEffectEntry const* itemEffect : item->GetEffects())
 {
 if (itemEffect->TriggerType != ITEM_SPELLTRIGGER_ON_LEARN)
 continue;
 
 if (BattlePetSpeciesEntry const* speciesEntry = BattlePets::BattlePetMgr::GetBattlePetSpeciesBySpell(uint32(itemEffect->SpellID)))
 GetBattlePetMgr()->AddPet(speciesEntry->ID, BattlePets::BattlePetMgr::SelectPetDisplay(speciesEntry),
 BattlePets::BattlePetMgr::RollPetBreed(speciesEntry->ID), BattlePets::BattlePetMgr::GetDefaultPetQuality(speciesEntry->ID));
 }
 
 _player->DestroyItem(item->GetBagSlot(), item->GetSlot(), true);
}
 
void WorldSession::HandleSortBags(WorldPackets::Item::SortBags& /*sortBags*/)
{
 // TODO: Implement sorting
 // Placeholder to prevent completely locking out bags clientside
 SendPacket(WorldPackets::Item::BagCleanupFinished().Write());
}
 
void WorldSession::HandleSortBankBags(WorldPackets::Item::SortBankBags& /*sortBankBags*/)
{
 // TODO: Implement sorting
 // Placeholder to prevent completely locking out bags clientside
 SendPacket(WorldPackets::Item::BagCleanupFinished().Write());
}
 
void WorldSession::HandleSortReagentBankBags(WorldPackets::Item::SortReagentBankBags& /*sortReagentBankBags*/)
{
 // TODO: Implement sorting
 // Placeholder to prevent completely locking out bags clientside
 SendPacket(WorldPackets::Item::BagCleanupFinished().Write());
}
 
void WorldSession::HandleRemoveNewItem(WorldPackets::Item::RemoveNewItem& removeNewItem)
{
 Item* item = _player->GetItemByGuid(removeNewItem.ItemGuid);
 if (!item)
 {
 TC_LOG_DEBUG("network", "WorldSession::HandleRemoveNewItem: Item ({}) not found for {}!", removeNewItem.ItemGuid.ToString(), GetPlayerInfo());
 return;
 }
 
 if (item->HasItemFlag(ITEM_FIELD_FLAG_NEW_ITEM))
 {
 item->RemoveItemFlag(ITEM_FIELD_FLAG_NEW_ITEM);
 item->SetState(ITEM_CHANGED, _player);
 }
}