TaxiHandler.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 "Common.h"
#include "ConditionMgr.h"
#include "Containers.h"
#include "Creature.h"
#include "DatabaseEnv.h"
#include "DB2Stores.h"
#include "FlightPathMovementGenerator.h"
#include "Log.h"
#include "MotionMaster.h"
#include "ObjectAccessor.h"
#include "ObjectMgr.h"
#include "Player.h"
#include "TaxiPackets.h"
#include "TaxiPathGraph.h"
 
void WorldSession::HandleEnableTaxiNodeOpcode(WorldPackets::Taxi::EnableTaxiNode& enableTaxiNode)
{
 if (Creature* unit = GetPlayer()->GetNPCIfCanInteractWith(enableTaxiNode.Unit, UNIT_NPC_FLAG_FLIGHTMASTER, UNIT_NPC_FLAG_2_NONE))
 SendLearnNewTaxiNode(unit);
}
 
void WorldSession::HandleTaxiNodeStatusQueryOpcode(WorldPackets::Taxi::TaxiNodeStatusQuery& taxiNodeStatusQuery)
{
 SendTaxiStatus(taxiNodeStatusQuery.UnitGUID);
}
 
void WorldSession::SendTaxiStatus(ObjectGuid guid)
{
 Player* const player = GetPlayer();
 Creature* unit = ObjectAccessor::GetCreature(*player, guid);
 if (!unit || unit->IsHostileTo(player) || !unit->HasNpcFlag(UNIT_NPC_FLAG_FLIGHTMASTER))
 {
 TC_LOG_DEBUG("network", "WorldSession::SendTaxiStatus - {} not found or you can't interact with him.", guid.ToString());
 return;
 }
 
 // find taxi node
 uint32 nearest = sObjectMgr->GetNearestTaxiNode(unit->GetPositionX(), unit->GetPositionY(), unit->GetPositionZ(), unit->GetMapId(), player->GetTeam());
 
 WorldPackets::Taxi::TaxiNodeStatus data;
 data.Unit = guid;
 
 if (!nearest)
 data.Status = TAXISTATUS_NONE;
 else if (unit->GetReactionTo(GetPlayer()) >= REP_NEUTRAL)
 data.Status = GetPlayer()->m_taxi.IsTaximaskNodeKnown(nearest) ? TAXISTATUS_LEARNED : TAXISTATUS_UNLEARNED;
 else
 data.Status = TAXISTATUS_NOT_ELIGIBLE;
 
 SendPacket(data.Write());
}
 
void WorldSession::HandleTaxiQueryAvailableNodesOpcode(WorldPackets::Taxi::TaxiQueryAvailableNodes& taxiQueryAvailableNodes)
{
 // cheating checks
 Creature* unit = GetPlayer()->GetNPCIfCanInteractWith(taxiQueryAvailableNodes.Unit, UNIT_NPC_FLAG_FLIGHTMASTER, UNIT_NPC_FLAG_2_NONE);
 if (!unit)
 {
 TC_LOG_DEBUG("network", "WORLD: HandleTaxiQueryAvailableNodes - {} not found or you can't interact with him.", taxiQueryAvailableNodes.Unit.ToString());
 return;
 }
 // remove fake death
 if (GetPlayer()->HasUnitState(UNIT_STATE_DIED))
 GetPlayer()->RemoveAurasByType(SPELL_AURA_FEIGN_DEATH);
 
 // unknown taxi node case
 if (SendLearnNewTaxiNode(unit))
 return;
 
 // known taxi node case
 SendTaxiMenu(unit);
}
 
void WorldSession::SendTaxiMenu(Creature* unit)
{
 // find current node
 uint32 curloc = sObjectMgr->GetNearestTaxiNode(unit->GetPositionX(), unit->GetPositionY(), unit->GetPositionZ(), unit->GetMapId(), GetPlayer()->GetTeam());
 if (!curloc)
 return;
 
 bool lastTaxiCheaterState = GetPlayer()->isTaxiCheater();
 if (unit->GetEntry() == 29480)
 GetPlayer()->SetTaxiCheater(true); // Grimwing in Ebon Hold, special case. NOTE: Not perfect, Zul'Aman should not be included according to WoWhead, and I think taxicheat includes it.
 
 TC_LOG_DEBUG("network", "WORLD: CMSG_TAXINODE_STATUS_QUERY {} ", curloc);
 
 WorldPackets::Taxi::ShowTaxiNodes data;
 data.WindowInfo.emplace();
 data.WindowInfo->UnitGUID = unit->GetGUID();
 data.WindowInfo->CurrentNode = curloc;
 
 GetPlayer()->m_taxi.AppendTaximaskTo(data, lastTaxiCheaterState);
 
 TaxiMask reachableNodes;
 TaxiPathGraph::GetReachableNodesMask(sTaxiNodesStore.LookupEntry(curloc), &reachableNodes);
 
 for (std::size_t i = 0; i < reachableNodes.size(); ++i)
 {
 data.CanLandNodes[i] &= reachableNodes[i];
 data.CanUseNodes[i] &= reachableNodes[i];
 }
 
 SendPacket(data.Write());
 
 GetPlayer()->SetTaxiCheater(lastTaxiCheaterState);
}
 
void WorldSession::SendDoFlight(uint32 mountDisplayId, uint32 path, uint32 pathNode)
{
 // remove fake death
 if (GetPlayer()->HasUnitState(UNIT_STATE_DIED))
 GetPlayer()->RemoveAurasByType(SPELL_AURA_FEIGN_DEATH);
 
 if (mountDisplayId)
 GetPlayer()->Mount(mountDisplayId);
 
 GetPlayer()->GetMotionMaster()->MoveTaxiFlight(path, pathNode);
}
 
bool WorldSession::SendLearnNewTaxiNode(Creature* unit)
{
 // find current node
 uint32 curloc = sObjectMgr->GetNearestTaxiNode(unit->GetPositionX(), unit->GetPositionY(), unit->GetPositionZ(), unit->GetMapId(), GetPlayer()->GetTeam());
 
 if (curloc == 0)
 return true; // `true` send to avoid WorldSession::SendTaxiMenu call with one more curlock seartch with same false result.
 
 if (GetPlayer()->m_taxi.SetTaximaskNode(curloc))
 {
 SendPacket(WorldPackets::Taxi::NewTaxiPath().Write());
 
 WorldPackets::Taxi::TaxiNodeStatus data;
 data.Unit = unit->GetGUID();
 data.Status = TAXISTATUS_LEARNED;
 SendPacket(data.Write());
 
 return true;
 }
 else
 return false;
}
 
void WorldSession::SendDiscoverNewTaxiNode(uint32 nodeid)
{
 if (GetPlayer()->m_taxi.SetTaximaskNode(nodeid))
 SendPacket(WorldPackets::Taxi::NewTaxiPath().Write());
}
 
void WorldSession::HandleActivateTaxiOpcode(WorldPackets::Taxi::ActivateTaxi& activateTaxi)
{
 Creature* unit = GetPlayer()->GetNPCIfCanInteractWith(activateTaxi.Vendor, UNIT_NPC_FLAG_FLIGHTMASTER, UNIT_NPC_FLAG_2_NONE);
 if (!unit)
 {
 TC_LOG_DEBUG("network", "WORLD: HandleActivateTaxiOpcode - {} not found or you can't interact with it.", activateTaxi.Vendor.ToString());
 SendActivateTaxiReply(ERR_TAXITOOFARAWAY);
 return;
 }
 
 uint32 curloc = sObjectMgr->GetNearestTaxiNode(unit->GetPositionX(), unit->GetPositionY(), unit->GetPositionZ(), unit->GetMapId(), GetPlayer()->GetTeam());
 if (!curloc)
 return;
 
 TaxiNodesEntry const* from = sTaxiNodesStore.LookupEntry(curloc);
 TaxiNodesEntry const* to = sTaxiNodesStore.LookupEntry(activateTaxi.Node);
 if (!to)
 return;
 
 if (!GetPlayer()->isTaxiCheater())
 {
 if (!GetPlayer()->m_taxi.IsTaximaskNodeKnown(curloc) || !GetPlayer()->m_taxi.IsTaximaskNodeKnown(activateTaxi.Node))
 {
 SendActivateTaxiReply(ERR_TAXINOTVISITED);
 return;
 }
 }
 
 uint32 preferredMountDisplay = 0;
 if (MountEntry const* mount = sMountStore.LookupEntry(activateTaxi.FlyingMountID))
 {
 if (GetPlayer()->HasSpell(mount->SourceSpellID))
 {
 if (DB2Manager::MountXDisplayContainer const* mountDisplays = sDB2Manager.GetMountDisplays(mount->ID))
 {
 DB2Manager::MountXDisplayContainer usableDisplays;
 std::copy_if(mountDisplays->begin(), mountDisplays->end(), std::back_inserter(usableDisplays), [this](MountXDisplayEntry const* mountDisplay)
 {
 if (PlayerConditionEntry const* playerCondition = sPlayerConditionStore.LookupEntry(mountDisplay->PlayerConditionID))
 return sConditionMgr->IsPlayerMeetingCondition(GetPlayer(), playerCondition);
 
 return true;
 });
 
 if (!usableDisplays.empty())
 preferredMountDisplay = Trinity::Containers::SelectRandomContainerElement(usableDisplays)->CreatureDisplayInfoID;
 }
 }
 }
 
 std::vector<uint32> nodes;
 TaxiPathGraph::GetCompleteNodeRoute(from, to, GetPlayer(), nodes);
 GetPlayer()->ActivateTaxiPathTo(nodes, unit, 0, preferredMountDisplay);
}
 
void WorldSession::SendActivateTaxiReply(ActivateTaxiReply reply)
{
 WorldPackets::Taxi::ActivateTaxiReply data;
 data.Reply = reply;
 SendPacket(data.Write());
}
 
void WorldSession::HandleTaxiRequestEarlyLanding(WorldPackets::Taxi::TaxiRequestEarlyLanding& /*taxiRequestEarlyLanding*/)
{
 if (FlightPathMovementGenerator* flight = dynamic_cast<FlightPathMovementGenerator*>(GetPlayer()->GetMotionMaster()->GetCurrentMovementGenerator()))
 {
 if (GetPlayer()->m_taxi.RequestEarlyLanding())
 {
 flight->LoadPath(GetPlayer(), flight->GetPath()[flight->GetCurrentNode()]->NodeIndex);
 flight->Reset(GetPlayer());
 }
 }
}