Vehicle.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 "Vehicle.h"
#include "Battleground.h"
#include "CharmInfo.h"
#include "Common.h"
#include "CreatureAI.h"
#include "DB2Stores.h"
#include "EventProcessor.h"
#include "Log.h"
#include "MotionMaster.h"
#include "MoveSplineInit.h"
#include "ObjectAccessor.h"
#include "ObjectMgr.h"
#include "Player.h"
#include "ScriptMgr.h"
#include "SpellAuraEffects.h"
#include "TemporarySummon.h"
#include "Unit.h"
#include <sstream>
 
class VehicleJoinEvent : public BasicEvent
{
public:
    VehicleJoinEvent(Vehicle* v, Unit* u) : Target(v), Passenger(u), Seat(Target->Seats.end()) { }
    bool Execute(uint64, uint32) override;
    void Abort(uint64) override;
 
    Vehicle* Target;
    Unit* Passenger;
    SeatMap::iterator Seat;
};
 
Vehicle::Vehicle(Unit* unit, VehicleEntry const* vehInfo, uint32 creatureEntry) :
UsableSeatNum(0), _me(unit), _vehicleInfo(vehInfo), _creatureEntry(creatureEntry), _status(STATUS_NONE)
{
    for (int8 i = 0; i < MAX_VEHICLE_SEATS; ++i)
    {
        if (uint32 seatId = _vehicleInfo->SeatID[i])
            if (VehicleSeatEntry const* veSeat = sVehicleSeatStore.LookupEntry(seatId))
            {
                VehicleSeatAddon const* addon = sObjectMgr->GetVehicleSeatAddon(seatId);
                Seats.insert(std::make_pair(i, VehicleSeat(veSeat, addon)));
                if (veSeat->CanEnterOrExit())
                    ++UsableSeatNum;
            }
    }
 
    // Set or remove correct flags based on available seats. Will overwrite db data (if wrong).
    if (UsableSeatNum)
        _me->SetNpcFlag((_me->GetTypeId() == TYPEID_PLAYER ? UNIT_NPC_FLAG_PLAYER_VEHICLE : UNIT_NPC_FLAG_SPELLCLICK));
    else if (!unit->m_unitData->InteractSpellID)
        _me->RemoveNpcFlag((_me->GetTypeId() == TYPEID_PLAYER ? UNIT_NPC_FLAG_PLAYER_VEHICLE : UNIT_NPC_FLAG_SPELLCLICK));
 
    InitMovementInfoForBase();
}
 
Vehicle::~Vehicle()
{
    ASSERT(_status == STATUS_UNINSTALLING);
    for (SeatMap::const_iterator itr = Seats.begin(); itr != Seats.end(); ++itr)
        ASSERT(itr->second.IsEmpty());
}
 
void Vehicle::Install()
{
    _status = STATUS_INSTALLED;
    if (GetBase()->GetTypeId() == TYPEID_UNIT)
        sScriptMgr->OnInstall(this);
}
 
void Vehicle::InstallAllAccessories(bool evading)
{
    if (GetBase()->GetTypeId() == TYPEID_PLAYER || !evading)
        RemoveAllPassengers();   // We might have aura's saved in the DB with now invalid casters - remove
 
    VehicleAccessoryList const* accessories = sObjectMgr->GetVehicleAccessoryList(this);
    if (!accessories)
        return;
 
    for (VehicleAccessoryList::const_iterator itr = accessories->begin(); itr != accessories->end(); ++itr)
        if (!evading || itr->IsMinion)  // only install minions on evade mode
            InstallAccessory(itr->AccessoryEntry, itr->SeatId, itr->IsMinion, itr->SummonedType, itr->SummonTime, itr->RideSpellID);
}
 
void Vehicle::Uninstall()
{
    if (_status == STATUS_UNINSTALLING && !GetBase()->HasUnitTypeMask(UNIT_MASK_MINION))
    {
        TC_LOG_ERROR("entities.vehicle", "Vehicle {} Entry: {} attempts to uninstall, but already has STATUS_UNINSTALLING! "
            "Check Uninstall/PassengerBoarded script hooks for errors.", _me->GetGUID().ToString(), _creatureEntry);
        return;
    }
 
    _status = STATUS_UNINSTALLING;
    TC_LOG_DEBUG("entities.vehicle", "Vehicle::Uninstall Entry: {}, {}", _creatureEntry, _me->GetGUID().ToString());
    RemoveAllPassengers();
 
    if (GetBase()->GetTypeId() == TYPEID_UNIT)
        sScriptMgr->OnUninstall(this);
}
 
void Vehicle::Reset(bool evading /*= false*/)
{
    if (GetBase()->GetTypeId() != TYPEID_UNIT)
        return;
 
    TC_LOG_DEBUG("entities.vehicle", "Vehicle::Reset (Entry: {}, {}, DBGuid: {})", GetCreatureEntry(), _me->GetGUID().ToString(), _me->ToCreature()->GetSpawnId());
 
    ApplyAllImmunities();
    if (GetBase()->IsAlive())
        InstallAllAccessories(evading);
 
    sScriptMgr->OnReset(this);
}
 
void Vehicle::ApplyAllImmunities()
{
    // This couldn't be done in DB, because some spells have MECHANIC_NONE
 
    // Vehicles should be immune on Knockback ...
    _me->ApplySpellImmune(0, IMMUNITY_EFFECT, SPELL_EFFECT_KNOCK_BACK, true);
    _me->ApplySpellImmune(0, IMMUNITY_EFFECT, SPELL_EFFECT_KNOCK_BACK_DEST, true);
 
    // Mechanical units & vehicles ( which are not Bosses, they have own immunities in DB ) should be also immune on healing ( exceptions in switch below )
    if (_me->ToCreature() && _me->ToCreature()->GetCreatureTemplate()->type == CREATURE_TYPE_MECHANICAL && !_me->ToCreature()->isWorldBoss())
    {
        // Heal & dispel ...
        _me->ApplySpellImmune(0, IMMUNITY_EFFECT, SPELL_EFFECT_HEAL, true);
        _me->ApplySpellImmune(0, IMMUNITY_EFFECT, SPELL_EFFECT_HEAL_PCT, true);
        _me->ApplySpellImmune(0, IMMUNITY_EFFECT, SPELL_EFFECT_DISPEL, true);
        _me->ApplySpellImmune(0, IMMUNITY_STATE, SPELL_AURA_PERIODIC_HEAL, true);
 
        // ... Shield & Immunity grant spells ...
        _me->ApplySpellImmune(0, IMMUNITY_STATE, SPELL_AURA_SCHOOL_IMMUNITY, true);
        _me->ApplySpellImmune(0, IMMUNITY_STATE, SPELL_AURA_MOD_UNATTACKABLE, true);
        _me->ApplySpellImmune(0, IMMUNITY_STATE, SPELL_AURA_SCHOOL_ABSORB, true);
        _me->ApplySpellImmune(0, IMMUNITY_MECHANIC, MECHANIC_BANISH, true);
        _me->ApplySpellImmune(0, IMMUNITY_MECHANIC, MECHANIC_SHIELD, true);
        _me->ApplySpellImmune(0, IMMUNITY_MECHANIC, MECHANIC_IMMUNE_SHIELD, true);
 
        // ... Resistance, Split damage, Change stats ...
        _me->ApplySpellImmune(0, IMMUNITY_STATE, SPELL_AURA_DAMAGE_SHIELD, true);
        _me->ApplySpellImmune(0, IMMUNITY_STATE, SPELL_AURA_SPLIT_DAMAGE_PCT, true);
        _me->ApplySpellImmune(0, IMMUNITY_STATE, SPELL_AURA_MOD_RESISTANCE, true);
        _me->ApplySpellImmune(0, IMMUNITY_STATE, SPELL_AURA_MOD_STAT, true);
        _me->ApplySpellImmune(0, IMMUNITY_STATE, SPELL_AURA_MOD_DAMAGE_PERCENT_TAKEN, true);
    }
 
    // Different immunities for vehicles goes below
    switch (GetVehicleInfo()->ID)
    {
        // code below prevents a bug with movable cannons
        case 160: // Strand of the Ancients
        case 244: // Wintergrasp
        case 510: // Isle of Conquest
        case 452: // Isle of Conquest
        case 543: // Isle of Conquest
            _me->SetControlled(true, UNIT_STATE_ROOT);
            // why we need to apply this? we can simple add immunities to slow mechanic in DB
            _me->ApplySpellImmune(0, IMMUNITY_STATE, SPELL_AURA_MOD_DECREASE_SPEED, true);
            break;
        case 335: // Salvaged Chopper
        case 336: // Salvaged Siege Engine
        case 338: // Salvaged Demolisher
            _me->ApplySpellImmune(0, IMMUNITY_STATE, SPELL_AURA_MOD_DAMAGE_PERCENT_TAKEN, false); // Battering Ram
            break;
        default:
            break;
    }
}
 
void Vehicle::RemoveAllPassengers()
{
    TC_LOG_DEBUG("entities.vehicle", "Vehicle::RemoveAllPassengers. Entry: {}, {}", _creatureEntry, _me->GetGUID().ToString());
 
    {
        Vehicle* eventVehicle = _status != STATUS_UNINSTALLING ? this : nullptr;
 
        while (!_pendingJoinEvents.empty())
        {
            VehicleJoinEvent* e = _pendingJoinEvents.front();
            e->ScheduleAbort();
            e->Target = eventVehicle;
            _pendingJoinEvents.pop_front();
        }
    }
 
    // Passengers always cast an aura with SPELL_AURA_CONTROL_VEHICLE on the vehicle
    // We just remove the aura and the unapply handler will make the target leave the vehicle.
    // We don't need to iterate over Seats
    _me->RemoveAurasByType(SPELL_AURA_CONTROL_VEHICLE);
 
    // Aura script might cause the vehicle to be despawned in the middle of handling SPELL_AURA_CONTROL_VEHICLE removal
    // In that case, aura effect has already been unregistered but passenger may still be found in Seats
    for (auto const& [_, seat] : Seats)
        if (Unit* passenger = ObjectAccessor::GetUnit(*_me, seat.Passenger.Guid))
            passenger->_ExitVehicle();
}
 
bool Vehicle::HasEmptySeat(int8 seatId) const
{
    SeatMap::const_iterator seat = Seats.find(seatId);
    if (seat == Seats.end())
        return false;
    return seat->second.IsEmpty();
}
 
Unit* Vehicle::GetPassenger(int8 seatId) const
{
    SeatMap::const_iterator seat = Seats.find(seatId);
    if (seat == Seats.end())
        return nullptr;
 
    return ObjectAccessor::GetUnit(*GetBase(), seat->second.Passenger.Guid);
}
 
SeatMap::const_iterator Vehicle::GetNextEmptySeat(int8 seatId, bool next) const
{
    SeatMap::const_iterator seat = Seats.find(seatId);
    if (seat == Seats.end())
        return seat;
 
    while (!seat->second.IsEmpty() || HasPendingEventForSeat(seat->first) || (!seat->second.SeatInfo->CanEnterOrExit() && !seat->second.SeatInfo->IsUsableByOverride()))
    {
        if (next)
        {
            if (++seat == Seats.end())
                seat = Seats.begin();
        }
        else
        {
            if (seat == Seats.begin())
                seat = Seats.end();
            --seat;
        }
 
        // Make sure we don't loop indefinetly
        if (seat->first == seatId)
        {
            seat = Seats.end();
            break;
        }
    }
 
    return seat;
}
 
VehicleSeatAddon const* Vehicle::GetSeatAddonForSeatOfPassenger(Unit const* passenger) const
{
    for (SeatMap::const_iterator itr = Seats.begin(); itr != Seats.end(); itr++)
        if (!itr->second.IsEmpty() && itr->second.Passenger.Guid == passenger->GetGUID())
            return itr->second.SeatAddon;
 
    return nullptr;
}
 
void Vehicle::InstallAccessory(uint32 entry, int8 seatId, bool minion, uint8 type, uint32 summonTime, Optional<uint32> rideSpellId /*= {}*/)
{
    if (_status == STATUS_UNINSTALLING)
    {
        TC_LOG_ERROR("entities.vehicle", "Vehicle ({}, Entry: {}) attempts to install accessory (Entry: {}) on seat {} with STATUS_UNINSTALLING! "
            "Check Uninstall/PassengerBoarded script hooks for errors.", _me->GetGUID().ToString(),
            GetCreatureEntry(), entry, (int32)seatId);
        return;
    }
 
    TC_LOG_DEBUG("entities.vehicle", "Vehicle ({}, Entry {}): installing accessory (Entry: {}) on seat: {}",
        _me->GetGUID().ToString(), GetCreatureEntry(), entry, (int32)seatId);
 
    TempSummon* accessory = _me->SummonCreature(entry, *_me, TempSummonType(type), Milliseconds(summonTime));
    ASSERT(accessory);
 
    if (minion)
    {
        accessory->AddUnitTypeMask(UNIT_MASK_ACCESSORY);
        accessory->GetThreatManager().Initialize(); // reinitialize CanHaveThreatList cached value
    }
 
    if (rideSpellId)
        _me->HandleSpellClick(accessory, seatId, *rideSpellId);
    else
        _me->HandleSpellClick(accessory, seatId);
 
}
 
bool Vehicle::AddVehiclePassenger(Unit* unit, int8 seatId)
{
    if (_status == STATUS_UNINSTALLING)
    {
        TC_LOG_ERROR("entities.vehicle", "Passenger {}, attempting to board vehicle {} during uninstall! SeatId: {}",
            unit->GetGUID().ToString(), _me->GetGUID().ToString(), (int32)seatId);
        return false;
    }
 
    TC_LOG_DEBUG("entities.vehicle", "Unit {} scheduling enter vehicle (entry: {}, vehicleId: {}, guid: {} on seat {}",
        unit->GetName(), _me->GetEntry(), _vehicleInfo->ID, _me->GetGUID().ToString(), (int32)seatId);
 
    // The seat selection code may kick other passengers off the vehicle.
    // While the validity of the following may be arguable, it is possible that when such a passenger
    // exits the vehicle will dismiss. That's why the actual adding the passenger to the vehicle is scheduled
    // asynchronously, so it can be cancelled easily in case the vehicle is uninstalled meanwhile.
    SeatMap::iterator seat;
    VehicleJoinEvent* e = new VehicleJoinEvent(this, unit);
    unit->m_Events.AddEvent(e, unit->m_Events.CalculateTime(0s));
 
    if (seatId < 0) // no specific seat requirement
    {
        for (seat = Seats.begin(); seat != Seats.end(); ++seat)
            if (seat->second.IsEmpty() && !HasPendingEventForSeat(seat->first) && (seat->second.SeatInfo->CanEnterOrExit() || seat->second.SeatInfo->IsUsableByOverride()))
                break;
 
        if (seat == Seats.end()) // no available seat
        {
            e->ScheduleAbort();
            return false;
        }
 
        e->Seat = seat;
        _pendingJoinEvents.push_back(e);
    }
    else
    {
        seat = Seats.find(seatId);
        if (seat == Seats.end())
        {
            e->ScheduleAbort();
            return false;
        }
 
        e->Seat = seat;
        _pendingJoinEvents.push_back(e);
        if (!seat->second.IsEmpty())
        {
            Unit* passenger = ObjectAccessor::GetUnit(*GetBase(), seat->second.Passenger.Guid);
            ASSERT(passenger);
            passenger->ExitVehicle();
        }
 
        ASSERT(seat->second.IsEmpty());
    }
 
    return true;
}
 
Vehicle* Vehicle::RemovePassenger(WorldObject* passenger)
{
    Unit* unit = passenger->ToUnit();
    if (!unit)
        return nullptr;
 
    if (unit->GetVehicle() != this)
        return nullptr;
 
    SeatMap::iterator seat = GetSeatIteratorForPassenger(unit);
    ASSERT(seat != Seats.end());
 
    TC_LOG_DEBUG("entities.vehicle", "Unit {} exit vehicle entry {} id {} guid {} seat {}",
        unit->GetName(), _me->GetEntry(), _vehicleInfo->ID, _me->GetGUID().ToString(), (int32)seat->first);
 
    if (seat->second.SeatInfo->CanEnterOrExit() && ++UsableSeatNum)
        _me->SetNpcFlag((_me->GetTypeId() == TYPEID_PLAYER ? UNIT_NPC_FLAG_PLAYER_VEHICLE : UNIT_NPC_FLAG_SPELLCLICK));
 
    // Enable gravity for passenger when he did not have it active before entering the vehicle
    if (seat->second.SeatInfo->Flags & VEHICLE_SEAT_FLAG_DISABLE_GRAVITY && !seat->second.Passenger.IsGravityDisabled)
        unit->SetDisableGravity(false);
 
    // Remove UNIT_FLAG_UNINTERACTIBLE if passenger did not have it before entering vehicle
    if (seat->second.SeatInfo->Flags & VEHICLE_SEAT_FLAG_PASSENGER_NOT_SELECTABLE && !seat->second.Passenger.IsUninteractible)
        unit->SetUninteractible(false);
 
    seat->second.Passenger.Reset();
 
    if (_me->GetTypeId() == TYPEID_UNIT && unit->GetTypeId() == TYPEID_PLAYER && seat->second.SeatInfo->Flags & VEHICLE_SEAT_FLAG_CAN_CONTROL)
        _me->RemoveCharmedBy(unit);
 
    if (_me->IsInWorld())
    {
        if (!_me->GetTransport())
            unit->m_movementInfo.ResetTransport();
        else
            unit->m_movementInfo.transport = _me->m_movementInfo.transport;
    }
 
    // only for flyable vehicles
    if (unit->IsFlying())
    {
        VehicleTemplate const* vehicleTemplate = sObjectMgr->GetVehicleTemplate(this);
        if (!vehicleTemplate || !vehicleTemplate->CustomFlags.HasFlag(VehicleCustomFlags::DontForceParachuteOnExit))
            _me->CastSpell(unit, VEHICLE_SPELL_PARACHUTE, true);
    }
 
    if (_me->GetTypeId() == TYPEID_UNIT && _me->ToCreature()->IsAIEnabled())
        _me->ToCreature()->AI()->PassengerBoarded(unit, seat->first, false);
 
    if (GetBase()->GetTypeId() == TYPEID_UNIT)
        sScriptMgr->OnRemovePassenger(this, unit);
 
    unit->SetVehicle(nullptr);
    return this;
}
 
void Vehicle::RelocatePassengers()
{
    ASSERT(_me->GetMap());
 
    std::vector<std::pair<Unit*, Position>> seatRelocation;
    seatRelocation.reserve(Seats.size());
 
    // not sure that absolute position calculation is correct, it must depend on vehicle pitch angle
    for (SeatMap::const_iterator itr = Seats.begin(); itr != Seats.end(); ++itr)
    {
        if (Unit* passenger = ObjectAccessor::GetUnit(*GetBase(), itr->second.Passenger.Guid))
        {
            ASSERT(passenger->IsInWorld());
 
            seatRelocation.emplace_back(passenger, _me->GetPositionWithOffset(passenger->m_movementInfo.transport.pos));
        }
    }
 
    for (auto const& [passenger, position] : seatRelocation)
        UpdatePassengerPosition(_me->GetMap(), passenger, position, false);
}
 
bool Vehicle::IsVehicleInUse() const
{
    for (SeatMap::const_iterator itr = Seats.begin(); itr != Seats.end(); ++itr)
        if (!itr->second.IsEmpty())
            return true;
 
    return false;
}
 
bool Vehicle::IsControllableVehicle() const
{
    for (SeatMap::const_iterator itr = Seats.begin(); itr != Seats.end(); ++itr)
        if (itr->second.SeatInfo->HasFlag(VEHICLE_SEAT_FLAG_CAN_CONTROL))
            return true;
 
    return false;
}
 
void Vehicle::InitMovementInfoForBase()
{
    uint32 vehicleFlags = GetVehicleInfo()->Flags;
 
    if (vehicleFlags & VEHICLE_FLAG_NO_STRAFE)
        _me->AddExtraUnitMovementFlag(MOVEMENTFLAG2_NO_STRAFE);
    if (vehicleFlags & VEHICLE_FLAG_NO_JUMPING)
        _me->AddExtraUnitMovementFlag(MOVEMENTFLAG2_NO_JUMPING);
    if (vehicleFlags & VEHICLE_FLAG_FULLSPEEDTURNING)
        _me->AddExtraUnitMovementFlag(MOVEMENTFLAG2_FULL_SPEED_TURNING);
    if (vehicleFlags & VEHICLE_FLAG_ALLOW_PITCHING)
        _me->AddExtraUnitMovementFlag(MOVEMENTFLAG2_ALWAYS_ALLOW_PITCHING);
    if (vehicleFlags & VEHICLE_FLAG_FULLSPEEDPITCHING)
        _me->AddExtraUnitMovementFlag(MOVEMENTFLAG2_FULL_SPEED_PITCHING);
 
    _me->m_movementInfo.pitch = GetPitch();
}
 
VehicleSeatEntry const* Vehicle::GetSeatForPassenger(Unit const* passenger) const
{
    for (SeatMap::const_iterator itr = Seats.begin(); itr != Seats.end(); ++itr)
        if (itr->second.Passenger.Guid == passenger->GetGUID())
            return itr->second.SeatInfo;
 
    return nullptr;
}
 
SeatMap::iterator Vehicle::GetSeatIteratorForPassenger(Unit* passenger)
{
    for (SeatMap::iterator itr = Seats.begin(); itr != Seats.end(); ++itr)
        if (itr->second.Passenger.Guid == passenger->GetGUID())
            return itr;
 
    return Seats.end();
}
 
uint8 Vehicle::GetAvailableSeatCount() const
{
    uint8 ret = 0;
    SeatMap::const_iterator itr;
    for (itr = Seats.begin(); itr != Seats.end(); ++itr)
        if (itr->second.IsEmpty() && !HasPendingEventForSeat(itr->first) && (itr->second.SeatInfo->CanEnterOrExit() || itr->second.SeatInfo->IsUsableByOverride()))
            ++ret;
 
    return ret;
}
 
void Vehicle::RemovePendingEvent(VehicleJoinEvent* e)
{
    for (PendingJoinEventContainer::iterator itr = _pendingJoinEvents.begin(); itr != _pendingJoinEvents.end(); ++itr)
    {
        if (*itr == e)
        {
            _pendingJoinEvents.erase(itr);
            break;
        }
    }
}
 
void Vehicle::RemovePendingEventsForSeat(int8 seatId)
{
    for (PendingJoinEventContainer::iterator itr = _pendingJoinEvents.begin(); itr != _pendingJoinEvents.end();)
    {
        if ((*itr)->Seat->first == seatId)
        {
            (*itr)->ScheduleAbort();
            _pendingJoinEvents.erase(itr++);
        }
        else
            ++itr;
    }
}
 
void Vehicle::RemovePendingEventsForPassenger(Unit* passenger)
{
    for (PendingJoinEventContainer::iterator itr = _pendingJoinEvents.begin(); itr != _pendingJoinEvents.end();)
    {
        if ((*itr)->Passenger == passenger)
        {
            (*itr)->ScheduleAbort();
            _pendingJoinEvents.erase(itr++);
        }
        else
            ++itr;
    }
}
 
bool VehicleJoinEvent::Execute(uint64, uint32)
{
    ASSERT(Passenger->IsInWorld());
    ASSERT(Target && Target->GetBase()->IsInWorld());
 
    Unit::AuraEffectList const& vehicleAuras = Target->GetBase()->GetAuraEffectsByType(SPELL_AURA_CONTROL_VEHICLE);
    auto itr = std::find_if(vehicleAuras.begin(), vehicleAuras.end(), [this](AuraEffect const* aurEff) -> bool
        {
            return aurEff->GetCasterGUID() == Passenger->GetGUID();
        });
    ASSERT(itr != vehicleAuras.end());
 
    AuraApplication const* aurApp = (*itr)->GetBase()->GetApplicationOfTarget(Target->GetBase()->GetGUID());
    ASSERT(aurApp && !aurApp->GetRemoveMode());
 
    Target->RemovePendingEventsForSeat(Seat->first);
    Target->RemovePendingEventsForPassenger(Passenger);
 
    // Passenger might've died in the meantime - abort if this is the case
    if (!Passenger->IsAlive())
    {
        Abort(0);
        return true;
    }
 
    //It's possible that multiple vehicle join
    //events are executed in the same update
    if (Passenger->GetVehicle())
        Passenger->ExitVehicle();
 
    Passenger->SetVehicle(Target);
    Seat->second.Passenger.Guid = Passenger->GetGUID();
    Seat->second.Passenger.IsUninteractible = Passenger->IsUninteractible();
    Seat->second.Passenger.IsGravityDisabled = Passenger->HasUnitMovementFlag(MOVEMENTFLAG_DISABLE_GRAVITY);
    if (Seat->second.SeatInfo->CanEnterOrExit())
    {
        ASSERT(Target->UsableSeatNum);
        --(Target->UsableSeatNum);
        if (!Target->UsableSeatNum)
        {
            if (Target->GetBase()->GetTypeId() == TYPEID_PLAYER)
                Target->GetBase()->RemoveNpcFlag(UNIT_NPC_FLAG_PLAYER_VEHICLE);
            else
                Target->GetBase()->RemoveNpcFlag(UNIT_NPC_FLAG_SPELLCLICK);
        }
    }
 
    Passenger->InterruptSpell(CURRENT_GENERIC_SPELL);
    Passenger->InterruptSpell(CURRENT_AUTOREPEAT_SPELL);
    Passenger->RemoveAurasWithInterruptFlags(SpellAuraInterruptFlags::Mount);
    Passenger->RemoveAurasByType(SPELL_AURA_MOUNTED);
 
    VehicleSeatEntry const* veSeat = Seat->second.SeatInfo;
    VehicleSeatAddon const* veSeatAddon = Seat->second.SeatAddon;
 
    Player* player = Passenger->ToPlayer();
    if (player)
    {
        player->StopCastingCharm();
        player->StopCastingBindSight();
        player->SendOnCancelExpectedVehicleRideAura();
        if (!veSeat->HasFlag(VEHICLE_SEAT_FLAG_B_KEEP_PET))
            player->UnsummonPetTemporaryIfAny();
    }
 
    if (veSeat->HasFlag(VEHICLE_SEAT_FLAG_DISABLE_GRAVITY))
        Passenger->SetDisableGravity(true);
 
    float o = veSeatAddon ? veSeatAddon->SeatOrientationOffset : 0.f;
    float x = veSeat->AttachmentOffset.X;
    float y = veSeat->AttachmentOffset.Y;
    float z = veSeat->AttachmentOffset.Z;
 
    Passenger->m_movementInfo.transport.pos.Relocate(x, y, z, o);
    Passenger->m_movementInfo.transport.time = 0;
    Passenger->m_movementInfo.transport.seat = Seat->first;
    Passenger->m_movementInfo.transport.guid = Target->GetBase()->GetGUID();
    Passenger->m_movementInfo.transport.vehicleId = Target->GetVehicleInfo()->ID;
 
    if (Target->GetBase()->GetTypeId() == TYPEID_UNIT && Passenger->GetTypeId() == TYPEID_PLAYER &&
        Seat->second.SeatInfo->HasFlag(VEHICLE_SEAT_FLAG_CAN_CONTROL))
    {
        // handles SMSG_CLIENT_CONTROL
        if (!Target->GetBase()->SetCharmedBy(Passenger, CHARM_TYPE_VEHICLE, aurApp))
        {
            // charming failed, probably aura was removed by relocation/scripts/whatever
            Abort(0);
            return true;
        }
    }
 
    Passenger->SendClearTarget();                            // SMSG_BREAK_TARGET
    Passenger->SetControlled(true, UNIT_STATE_ROOT);         // SMSG_FORCE_ROOT - In some cases we send SMSG_SPLINE_MOVE_ROOT here (for creatures)
    // also adds MOVEMENTFLAG_ROOT
 
    std::function<void(Movement::MoveSplineInit&)> initializer = [=](Movement::MoveSplineInit& init)
    {
        init.DisableTransportPathTransformations();
        init.MoveTo(x, y, z, false, true);
        init.SetFacing(o);
        init.SetTransportEnter();
    };
    Passenger->GetMotionMaster()->LaunchMoveSpline(std::move(initializer), EVENT_VEHICLE_BOARD, MOTION_PRIORITY_HIGHEST);
 
    for (auto const& [guid, threatRef] : Passenger->GetThreatManager().GetThreatenedByMeList())
        threatRef->GetOwner()->GetThreatManager().AddThreat(Target->GetBase(), 0.0f, nullptr, true, true);
 
    if (Creature* creature = Target->GetBase()->ToCreature())
    {
        if (CreatureAI* ai = creature->AI())
            ai->PassengerBoarded(Passenger, Seat->first, true);
 
        sScriptMgr->OnAddPassenger(Target, Passenger, Seat->first);
 
        // Actually quite a redundant hook. Could just use OnAddPassenger and check for unit typemask inside script.
        if (Passenger->HasUnitTypeMask(UNIT_MASK_ACCESSORY))
            sScriptMgr->OnInstallAccessory(Target, Passenger->ToCreature());
    }
 
    return true;
}
 
void VehicleJoinEvent::Abort(uint64)
{
    if (Target)
    {
        TC_LOG_DEBUG("entities.vehicle", "Passenger {}, board on vehicle {} SeatId: {} cancelled",
            Passenger->GetGUID().ToString(), Target->GetBase()->GetGUID().ToString(), (int32)Seat->first);
 
        Target->RemovePendingEvent(this);
 
        Target->GetBase()->RemoveAurasByType(SPELL_AURA_CONTROL_VEHICLE, Passenger->GetGUID());
    }
    else
        TC_LOG_DEBUG("entities.vehicle", "Passenger {}, board on uninstalled vehicle SeatId: {} cancelled",
            Passenger->GetGUID().ToString(), (int32)Seat->first);
 
    if (Passenger->IsInWorld() && Passenger->HasUnitTypeMask(UNIT_MASK_ACCESSORY))
        Passenger->ToCreature()->DespawnOrUnsummon();
}
 
bool Vehicle::HasPendingEventForSeat(int8 seatId) const
{
    for (PendingJoinEventContainer::const_iterator itr = _pendingJoinEvents.begin(); itr != _pendingJoinEvents.end(); ++itr)
    {
        if ((*itr)->Seat->first == seatId)
            return true;
    }
    return false;
}
 
Milliseconds Vehicle::GetDespawnDelay()
{
    if (VehicleTemplate const* vehicleTemplate = sObjectMgr->GetVehicleTemplate(this))
        return vehicleTemplate->DespawnDelay;
 
    return 1ms;
}
 
float Vehicle::GetPitch()
{
    if (VehicleTemplate const* vehicleTemplate = sObjectMgr->GetVehicleTemplate(this))
        if (vehicleTemplate->Pitch)
            return *vehicleTemplate->Pitch;
 
    return std::clamp(0.0f, _vehicleInfo->PitchMin, _vehicleInfo->PitchMax);
}
 
std::string Vehicle::GetDebugInfo() const
{
    std::stringstream sstr;
    sstr << "Vehicle seats:\n";
    for (SeatMap::const_iterator itr = Seats.begin(); itr != Seats.end(); itr++)
    {
        sstr << "seat " << std::to_string(itr->first) << ": " << (itr->second.IsEmpty() ? "empty" : itr->second.Passenger.Guid.ToString()) << "\n";
    }
 
    sstr << "Vehicle pending events:";
 
    if (_pendingJoinEvents.empty())
    {
        sstr << " none";
    }
    else
    {
        sstr << "\n";
        for (PendingJoinEventContainer::const_iterator itr = _pendingJoinEvents.begin(); itr != _pendingJoinEvents.end(); ++itr)
        {
            sstr << "seat " << std::to_string((*itr)->Seat->first) << ": " << (*itr)->Passenger->GetGUID().ToString() << "\n";
        }
    }
 
    return sstr.str();
}
 
Trinity::unique_weak_ptr<Vehicle> Vehicle::GetWeakPtr() const
{
    return _me->GetVehicleKitWeakPtr();
}