NPCHandler.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 "Battleground.h"
#include "Common.h"
#include "Creature.h"
#include "CreatureAI.h"
#include "DatabaseEnv.h"
#include "DB2Stores.h"
#include "GameObject.h"
#include "GameObjectAI.h"
#include "GossipDef.h"
#include "Item.h"
#include "ItemPackets.h"
#include "Log.h"
#include "Map.h"
#include "NPCPackets.h"
#include "ObjectMgr.h"
#include "Pet.h"
#include "PetPackets.h"
#include "Player.h"
#include "ReputationMgr.h"
#include "SpellInfo.h"
#include "Trainer.h"
#include "WorldPacket.h"
 
enum class TabardVendorType : int32
{
 Guild = 0,
 Personal = 1,
};
 
void WorldSession::HandleTabardVendorActivateOpcode(WorldPackets::NPC::TabardVendorActivate const& tabardVendorActivate)
{
 Creature* unit = GetPlayer()->GetNPCIfCanInteractWith(tabardVendorActivate.Vendor, UNIT_NPC_FLAG_TABARDDESIGNER, UNIT_NPC_FLAG_2_NONE);
 if (!unit)
 {
 TC_LOG_DEBUG("network", "WORLD: HandleTabardVendorActivateOpcode - {} not found or you can not interact with him.", tabardVendorActivate.Vendor.ToString());
 return;
 }
 
 TabardVendorType type = TabardVendorType(tabardVendorActivate.Type);
 if (type != TabardVendorType::Guild && type != TabardVendorType::Personal)
 return;
 
 // remove fake death
 if (GetPlayer()->HasUnitState(UNIT_STATE_DIED))
 GetPlayer()->RemoveAurasByType(SPELL_AURA_FEIGN_DEATH);
 
 SendTabardVendorActivate(tabardVendorActivate.Vendor, TabardVendorType(tabardVendorActivate.Type));
}
 
void WorldSession::SendTabardVendorActivate(ObjectGuid guid, TabardVendorType type)
{
 WorldPackets::NPC::NPCInteractionOpenResult npcInteraction;
 npcInteraction.Npc = guid;
 npcInteraction.InteractionType = [&]
 {
 switch (type)
 {
 case TabardVendorType::Guild:
 return PlayerInteractionType::GuildTabardVendor;
 case TabardVendorType::Personal:
 return PlayerInteractionType::PersonalTabardVendor;
 default:
 ABORT_MSG("Unsupported tabard vendor type %d", AsUnderlyingType(type));
 }
 }();
 npcInteraction.Success = true;
 SendPacket(npcInteraction.Write());
}
 
void WorldSession::SendShowMailBox(ObjectGuid guid)
{
 WorldPackets::NPC::NPCInteractionOpenResult npcInteraction;
 npcInteraction.Npc = guid;
 npcInteraction.InteractionType = PlayerInteractionType::MailInfo;
 npcInteraction.Success = true;
 SendPacket(npcInteraction.Write());
}
 
void WorldSession::HandleTrainerListOpcode(WorldPackets::NPC::Hello& packet)
{
 Creature* npc = GetPlayer()->GetNPCIfCanInteractWith(packet.Unit, UNIT_NPC_FLAG_TRAINER, UNIT_NPC_FLAG_2_NONE);
 if (!npc)
 {
 TC_LOG_DEBUG("network", "WorldSession::SendTrainerList - {} not found or you can not interact with him.", packet.Unit.ToString());
 return;
 }
 
 if (uint32 trainerId = npc->GetTrainerId())
 SendTrainerList(npc, trainerId);
 else
 TC_LOG_DEBUG("network", "WorldSession::SendTrainerList - Creature id {} has no trainer data.", npc->GetEntry());
}
 
void WorldSession::SendTrainerList(Creature* npc, uint32 trainerId)
{
 // remove fake death
 if (GetPlayer()->HasUnitState(UNIT_STATE_DIED))
 GetPlayer()->RemoveAurasByType(SPELL_AURA_FEIGN_DEATH);
 
 Trainer::Trainer const* trainer = sObjectMgr->GetTrainer(trainerId);
 if (!trainer)
 {
 TC_LOG_DEBUG("network", "WorldSession::SendTrainerList - trainer spells not found for trainer {} id {}", npc->GetGUID().ToString(), trainerId);
 return;
 }
 
 _player->PlayerTalkClass->GetInteractionData().Reset();
 _player->PlayerTalkClass->GetInteractionData().SourceGuid = npc->GetGUID();
 _player->PlayerTalkClass->GetInteractionData().TrainerId = trainerId;
 trainer->SendSpells(npc, _player, GetSessionDbLocaleIndex());
}
 
void WorldSession::HandleTrainerBuySpellOpcode(WorldPackets::NPC::TrainerBuySpell& packet)
{
 TC_LOG_DEBUG("network", "WORLD: Received CMSG_TRAINER_BUY_SPELL {}, learn spell id is: {}", packet.TrainerGUID.ToString(), packet.SpellID);
 
 Creature* npc = GetPlayer()->GetNPCIfCanInteractWith(packet.TrainerGUID, UNIT_NPC_FLAG_TRAINER, UNIT_NPC_FLAG_2_NONE);
 if (!npc)
 {
 TC_LOG_DEBUG("network", "WORLD: HandleTrainerBuySpellOpcode - {} not found or you can not interact with him.", packet.TrainerGUID.ToString());
 return;
 }
 
 // remove fake death
 if (GetPlayer()->HasUnitState(UNIT_STATE_DIED))
 GetPlayer()->RemoveAurasByType(SPELL_AURA_FEIGN_DEATH);
 
 if (_player->PlayerTalkClass->GetInteractionData().SourceGuid != packet.TrainerGUID)
 return;
 
 if (_player->PlayerTalkClass->GetInteractionData().TrainerId != uint32(packet.TrainerID))
 return;
 
 Trainer::Trainer const* trainer = sObjectMgr->GetTrainer(packet.TrainerID);
 if (!trainer)
 return;
 
 trainer->TeachSpell(npc, _player, packet.SpellID);
}
 
void WorldSession::HandleGossipHelloOpcode(WorldPackets::NPC::Hello& packet)
{
 Creature* unit = GetPlayer()->GetNPCIfCanInteractWith(packet.Unit, UNIT_NPC_FLAG_GOSSIP, UNIT_NPC_FLAG_2_NONE);
 if (!unit)
 {
 TC_LOG_DEBUG("network", "WORLD: HandleGossipHelloOpcode - {} not found or you can not interact with him.", packet.Unit.ToString());
 return;
 }
 
 // set faction visible if needed
 if (FactionTemplateEntry const* factionTemplateEntry = sFactionTemplateStore.LookupEntry(unit->GetFaction()))
 _player->GetReputationMgr().SetVisible(factionTemplateEntry);
 
 GetPlayer()->RemoveAurasWithInterruptFlags(SpellAuraInterruptFlags::Interacting);
 
 // Stop the npc if moving
 if (uint32 pause = unit->GetMovementTemplate().GetInteractionPauseTimer())
 unit->PauseMovement(pause);
 unit->SetHomePosition(unit->GetPosition());
 
 if (unit->IsAreaSpiritHealer())
 {
 _player->SetAreaSpiritHealer(unit);
 _player->SendAreaSpiritHealerTime(unit);
 }
 
 _player->PlayerTalkClass->ClearMenus();
 if (!unit->AI()->OnGossipHello(_player))
 {
// _player->TalkedToCreature(unit->GetEntry(), unit->GetGUID());
 _player->PrepareGossipMenu(unit, _player->GetGossipMenuForSource(unit), true);
 _player->SendPreparedGossip(unit);
 }
}
 
void WorldSession::HandleGossipSelectOptionOpcode(WorldPackets::NPC::GossipSelectOption& packet)
{
 GossipMenuItem const* gossipMenuItem = _player->PlayerTalkClass->GetGossipMenu().GetItem(packet.GossipOptionID);
 if (!gossipMenuItem)
 return;
 
 // Prevent cheating on C++ scripted menus
 if (_player->PlayerTalkClass->GetInteractionData().SourceGuid != packet.GossipUnit)
 return;
 
 Creature* unit = nullptr;
 GameObject* go = nullptr;
 if (packet.GossipUnit.IsCreatureOrVehicle())
 {
 unit = GetPlayer()->GetNPCIfCanInteractWith(packet.GossipUnit, UNIT_NPC_FLAG_GOSSIP, UNIT_NPC_FLAG_2_NONE);
 if (!unit)
 {
 TC_LOG_DEBUG("network", "WORLD: HandleGossipSelectOptionOpcode - {} not found or you can't interact with him.", packet.GossipUnit.ToString());
 return;
 }
 }
 else if (packet.GossipUnit.IsGameObject())
 {
 go = _player->GetGameObjectIfCanInteractWith(packet.GossipUnit);
 if (!go)
 {
 TC_LOG_DEBUG("network", "WORLD: HandleGossipSelectOptionOpcode - {} not found or you can't interact with it.", packet.GossipUnit.ToString());
 return;
 }
 }
 else
 {
 
 TC_LOG_DEBUG("network", "WORLD: HandleGossipSelectOptionOpcode - unsupported {}.", packet.GossipUnit.ToString());
 return;
 }
 
 // remove fake death
 if (GetPlayer()->HasUnitState(UNIT_STATE_DIED))
 GetPlayer()->RemoveAurasByType(SPELL_AURA_FEIGN_DEATH);
 
 if ((unit && unit->GetScriptId() != unit->LastUsedScriptID) || (go && go->GetScriptId() != go->LastUsedScriptID))
 {
 TC_LOG_DEBUG("network", "WORLD: HandleGossipSelectOptionOpcode - Script reloaded while in use, ignoring and set new scipt id");
 if (unit)
 unit->LastUsedScriptID = unit->GetScriptId();
 
 if (go)
 go->LastUsedScriptID = go->GetScriptId();
 _player->PlayerTalkClass->SendCloseGossip();
 return;
 }
 
 if (!packet.PromotionCode.empty())
 {
 if (unit)
 {
 if (!unit->AI()->OnGossipSelectCode(_player, packet.GossipID, gossipMenuItem->OrderIndex, packet.PromotionCode.c_str()))
 _player->OnGossipSelect(unit, packet.GossipOptionID, packet.GossipID);
 }
 else
 {
 if (!go->AI()->OnGossipSelectCode(_player, packet.GossipID, gossipMenuItem->OrderIndex, packet.PromotionCode.c_str()))
 _player->OnGossipSelect(go, packet.GossipOptionID, packet.GossipID);
 }
 }
 else
 {
 if (unit)
 {
 if (!unit->AI()->OnGossipSelect(_player, packet.GossipID, gossipMenuItem->OrderIndex))
 _player->OnGossipSelect(unit, packet.GossipOptionID, packet.GossipID);
 }
 else
 {
 if (!go->AI()->OnGossipSelect(_player, packet.GossipID, gossipMenuItem->OrderIndex))
 _player->OnGossipSelect(go, packet.GossipOptionID, packet.GossipID);
 }
 }
}
 
void WorldSession::HandleSpiritHealerActivate(WorldPackets::NPC::SpiritHealerActivate& packet)
{
 Creature* unit = GetPlayer()->GetNPCIfCanInteractWith(packet.Healer, UNIT_NPC_FLAG_SPIRIT_HEALER, UNIT_NPC_FLAG_2_NONE);
 if (!unit)
 {
 TC_LOG_DEBUG("network", "WORLD: HandleSpiritHealerActivateOpcode - {} not found or you can not interact with him.", packet.Healer.ToString());
 return;
 }
 
 // remove fake death
 if (GetPlayer()->HasUnitState(UNIT_STATE_DIED))
 GetPlayer()->RemoveAurasByType(SPELL_AURA_FEIGN_DEATH);
 
 SendSpiritResurrect();
}
 
void WorldSession::SendSpiritResurrect()
{
 _player->ResurrectPlayer(0.5f, true);
 _player->DurabilityLossAll(0.25f, true);
 
 // get corpse nearest graveyard
 WorldSafeLocsEntry const* corpseGrave = nullptr;
 WorldLocation corpseLocation = _player->GetCorpseLocation();
 if (_player->HasCorpse())
 {
 corpseGrave = sObjectMgr->GetClosestGraveyard(corpseLocation, _player->GetTeam(), _player);
 }
 
 // now can spawn bones
 _player->SpawnCorpseBones();
 
 // teleport to nearest from corpse graveyard, if different from nearest to player ghost
 if (corpseGrave)
 {
 WorldSafeLocsEntry const* ghostGrave = sObjectMgr->GetClosestGraveyard(*_player, _player->GetTeam(), _player);
 
 if (corpseGrave != ghostGrave)
 _player->TeleportTo(corpseGrave->Loc);
 }
}
 
void WorldSession::HandleBinderActivateOpcode(WorldPackets::NPC::Hello& packet)
{
 if (!GetPlayer()->IsInWorld() || !GetPlayer()->IsAlive())
 return;
 
 Creature* unit = GetPlayer()->GetNPCIfCanInteractWith(packet.Unit, UNIT_NPC_FLAG_INNKEEPER, UNIT_NPC_FLAG_2_NONE);
 if (!unit)
 {
 TC_LOG_DEBUG("network", "WORLD: HandleBinderActivateOpcode - {} not found or you can not interact with him.", packet.Unit.ToString());
 return;
 }
 
 // remove fake death
 if (GetPlayer()->HasUnitState(UNIT_STATE_DIED))
 GetPlayer()->RemoveAurasByType(SPELL_AURA_FEIGN_DEATH);
 
 SendBindPoint(unit);
}
 
void WorldSession::SendBindPoint(Creature* npc)
{
 // prevent set homebind to instances in any case
 if (GetPlayer()->GetMap()->Instanceable())
 return;
 
 uint32 bindspell = 3286;
 
 // send spell for homebinding (3286)
 npc->CastSpell(_player, bindspell, true);
 
 _player->PlayerTalkClass->SendCloseGossip();
}
 
void WorldSession::HandleRequestStabledPets(WorldPackets::NPC::RequestStabledPets& packet)
{
 if (!CheckStableMaster(packet.StableMaster))
 return;
 
 // remove fake death
 if (GetPlayer()->HasUnitState(UNIT_STATE_DIED))
 GetPlayer()->RemoveAurasByType(SPELL_AURA_FEIGN_DEATH);
 
 // remove mounts this fix bug where getting pet from stable while mounted deletes pet.
 if (GetPlayer()->IsMounted())
 GetPlayer()->RemoveAurasByType(SPELL_AURA_MOUNTED);
 
 _player->SetStableMaster(packet.StableMaster);
}
 
void WorldSession::SendPetStableResult(StableResult result)
{
 WorldPackets::Pet::PetStableResult petStableResult;
 petStableResult.Result = AsUnderlyingType(result);
 SendPacket(petStableResult.Write());
}
 
void WorldSession::HandleSetPetSlot(WorldPackets::NPC::SetPetSlot& setPetSlot)
{
 if (!CheckStableMaster(setPetSlot.StableMaster) || setPetSlot.DestSlot >= PET_SAVE_LAST_STABLE_SLOT)
 {
 SendPetStableResult(StableResult::InternalError);
 return;
 }
 
 _player->SetPetSlot(setPetSlot.PetNumber, PetSaveMode(setPetSlot.DestSlot));
}
 
void WorldSession::HandleRepairItemOpcode(WorldPackets::Item::RepairItem& packet)
{
 TC_LOG_DEBUG("network", "WORLD: CMSG_REPAIR_ITEM: Npc {}, Item {}, UseGuildBank: {}",
 packet.NpcGUID.ToString(), packet.ItemGUID.ToString(), packet.UseGuildBank);
 
 Creature* unit = GetPlayer()->GetNPCIfCanInteractWith(packet.NpcGUID, UNIT_NPC_FLAG_REPAIR, UNIT_NPC_FLAG_2_NONE);
 if (!unit)
 {
 TC_LOG_DEBUG("network", "WORLD: HandleRepairItemOpcode - {} not found or you can not interact with him.", packet.NpcGUID.ToString());
 return;
 }
 
 // remove fake death
 if (GetPlayer()->HasUnitState(UNIT_STATE_DIED))
 GetPlayer()->RemoveAurasByType(SPELL_AURA_FEIGN_DEATH);
 
 // reputation discount
 float discountMod = _player->GetReputationPriceDiscount(unit);
 
 if (!packet.ItemGUID.IsEmpty())
 {
 TC_LOG_DEBUG("network", "ITEM: Repair {}, at {}", packet.ItemGUID.ToString(), packet.NpcGUID.ToString());
 
 Item* item = _player->GetItemByGuid(packet.ItemGUID);
 if (item)
 _player->DurabilityRepair(item->GetPos(), true, discountMod);
 }
 else
 {
 TC_LOG_DEBUG("network", "ITEM: Repair all items at {}", packet.NpcGUID.ToString());
 _player->DurabilityRepairAll(true, discountMod, packet.UseGuildBank);
 }
}