void WorldSession::HandleForceSpeedChangeAck(WorldPacket& recv_data)
{
    DEBUG_LOG("WORLD: Recvd CMSG_SPEED_CHANGE_ACK");
    /* extract packet */
    ObjectGuid guid;
    uint32 unk1;
    MovementInfo movementInfo;
    float newspeed;

    recv_data >> guid;
    recv_data >> unk1;                           // counter or moveEvent
    recv_data >> movementInfo;
    recv_data >> newspeed;

    // now can skip not our packet
    if (GetPlayer()->GetGUID() != guid.GetRawValue())
        return;
    /*----------------*/

    // Save movement flags
    GetPlayer()->SetUnitMovementFlags(movementInfo.GetMovementFlags());

    // client ACK send one packet for mounted/run case and need skip all except last from its
    // in other cases anti-cheat check can be fail in false case
    UnitMoveType move_type;
    UnitMoveType force_move_type;

    //static char const* move_type_name[MAX_MOVE_TYPE] = {"Walk", "Run", "RunBack", "Swim", "SwimBack", "TurnRate", "Flight", "FlightBack"};

    uint16 opcode = recv_data.GetOpcode();
    switch (opcode)
    {
        case CMSG_FORCE_WALK_SPEED_CHANGE_ACK:          move_type = MOVE_WALK;          force_move_type = MOVE_WALK;        break;
        case CMSG_FORCE_RUN_SPEED_CHANGE_ACK:           move_type = MOVE_RUN;           force_move_type = MOVE_RUN;         break;
        case CMSG_FORCE_RUN_BACK_SPEED_CHANGE_ACK:      move_type = MOVE_RUN_BACK;      force_move_type = MOVE_RUN_BACK;    break;
        case CMSG_FORCE_SWIM_SPEED_CHANGE_ACK:          move_type = MOVE_SWIM;          force_move_type = MOVE_SWIM;        break;
        case CMSG_FORCE_SWIM_BACK_SPEED_CHANGE_ACK:     move_type = MOVE_SWIM_BACK;     force_move_type = MOVE_SWIM_BACK;   break;
        case CMSG_FORCE_TURN_RATE_CHANGE_ACK:           move_type = MOVE_TURN_RATE;     force_move_type = MOVE_TURN_RATE;   break;
        case CMSG_FORCE_FLIGHT_SPEED_CHANGE_ACK:        move_type = MOVE_FLIGHT;        force_move_type = MOVE_FLIGHT;      break;
        case CMSG_FORCE_FLIGHT_BACK_SPEED_CHANGE_ACK:   move_type = MOVE_FLIGHT_BACK;   force_move_type = MOVE_FLIGHT_BACK; break;
        default:
            sLog.outError("WorldSession::HandleForceSpeedChangeAck: Unknown move type opcode: %u", opcode);
            return;
    }

    // skip all forced speed changes except last and unexpected
    // in run/mounted case used one ACK and it must be skipped.m_forced_speed_changes[MOVE_RUN] store both.
    if (GetPlayer()->m_forced_speed_changes[force_move_type] > 0)
    {
        --GetPlayer()->m_forced_speed_changes[force_move_type];
        if (GetPlayer()->m_forced_speed_changes[force_move_type] > 0)
            return;
    }
}
void WorldSession::HandleMoveSetCanFlyAckOpcode(WorldPacket& recv_data)
{
    // fly mode on/off
    DEBUG_LOG("WORLD: CMSG_MOVE_SET_CAN_FLY_ACK");
    //recv_data.hexlike();

    MovementInfo movementInfo;

    recv_data.read_skip<uint64>();                          // guid
    recv_data.read_skip<uint32>();                          // unk
    recv_data >> movementInfo;
    recv_data.read_skip<uint32>();                          // unk2

    GetPlayer()->SetUnitMovementFlags(movementInfo.GetMovementFlags());
}
void WorldSession::HandleMoveKnockBackAck(WorldPacket& recv_data)
{
    // Currently not used but maybe use later for recheck final player position
    // (must be at call same as into "recv_data >> x >> y >> z >> orientation;"
    DEBUG_LOG("CMSG_MOVE_KNOCK_BACK_ACK");

    MovementInfo movementInfo;
    uint64 guid;

    recv_data >> guid;                                      // guid
    recv_data >> Unused<uint32>();                          // Always set to 0
    recv_data >> movementInfo;

    if (GetPlayer()->GetGUID() != guid)
        return;

    _player->m_movementInfo = movementInfo;

    // Calculate timestamp
    uint32 move_time, mstime;
    mstime = getMSTime();
    if(m_clientTimeDelay == 0)
        m_clientTimeDelay = mstime - movementInfo.time;
    move_time = (movementInfo.time - (mstime - m_clientTimeDelay)) + mstime + 500;
    movementInfo.time = move_time;

    // Save movement flags
    GetPlayer()->SetUnitMovementFlags(movementInfo.GetMovementFlags());

    // Send packet
    WorldPacket data(MSG_MOVE_KNOCK_BACK, uint16(recv_data.size() + 4));
    data.appendPackGUID(guid);

    /* Includes data shown below (but in different order) */
    movementInfo.Write(data);

    /* This is sent in addition to the rest of the movement data (yes, angle+velocity are sent twice) */
    data << movementInfo.j_sinAngle;
    data << movementInfo.j_cosAngle;
    data << movementInfo.j_xyspeed;
    data << movementInfo.j_velocity;

    /* Do we really need to send the data to everyone? Seemed to work better */
    _player->SendMessageToSet(&data, false); 
}
Beispiel #4
0
void WorldSession::HandleMoveKnockBackAck(WorldPacket & recv_data)
{
    // Currently not used but maybe use later for recheck final player position
    // (must be at call same as into "recv_data >> x >> y >> z >> orientation;"
    DEBUG_LOG("CMSG_MOVE_KNOCK_BACK_ACK");

    MovementInfo movementInfo;
    uint64 guid;

    recv_data >> guid;                                      // guid
    recv_data >> Unused<uint32>();                          // unk
    recv_data >> movementInfo;

    if (GetPlayer()->GetGUID() != guid)
        return;

    // Save movement flags
    GetPlayer()->SetUnitMovementFlags(movementInfo.GetMovementFlags());
}
void WorldSession::HandleMovementOpcodes( WorldPacket & recv_data )
{
    uint32 opcode = recv_data.GetOpcode();
    DEBUG_LOG("WORLD: Recvd %s (%u, 0x%X) opcode", LookupOpcodeName(opcode), opcode, opcode);
    recv_data.hexlike();

    Unit *mover = _player->GetMover();
    Player *plMover = mover->GetTypeId() == TYPEID_PLAYER ? (Player*)mover : NULL;

    // ignore, waiting processing in WorldSession::HandleMoveWorldportAckOpcode and WorldSession::HandleMoveTeleportAck
    if(plMover && plMover->IsBeingTeleported())
    {
        recv_data.rpos(recv_data.wpos());                   // prevent warnings spam
        return;
    }

    /* extract packet */
    ObjectGuid guid;
    MovementInfo movementInfo;

    recv_data >> guid.ReadAsPacked();
    recv_data >> movementInfo;
    /*----------------*/

    if (!VerifyMovementInfo(movementInfo, guid))
        return;

    // fall damage generation (ignore in flight case that can be triggered also at lags in moment teleportation to another map).
    if (opcode == MSG_MOVE_FALL_LAND && plMover && !plMover->IsTaxiFlying())
        plMover->HandleFall(movementInfo);


    // ---- anti-cheat features -->>>
    uint32 Anti_TeleTimeDiff=plMover ? time(NULL) - plMover->Anti__GetLastTeleTime() : time(NULL);
    static const uint32 Anti_TeleTimeIgnoreDiff=sWorld.GetMvAnticheatIgnoreAfterTeleport();
    if (plMover && (plMover->m_transport == 0) && sWorld.GetMvAnticheatEnable() &&
        GetPlayer()->GetSession()->GetSecurity() <= sWorld.GetMvAnticheatGmLevel() &&
        GetPlayer()->GetMotionMaster()->GetCurrentMovementGeneratorType()!=FLIGHT_MOTION_TYPE &&
        Anti_TeleTimeDiff>Anti_TeleTimeIgnoreDiff)
    {
        const uint32 CurTime=getMSTime();
        if (getMSTimeDiff(GetPlayer()->m_anti_lastalarmtime,CurTime) > sWorld.GetMvAnticheatAlarmPeriod())
        {
            GetPlayer()->m_anti_alarmcount = 0;
       }
        /* I really don't care about movement-type yet (todo)
        UnitMoveType move_type;

        if (movementInfo.flags & MOVEMENTFLAG_FLYING) move_type = MOVE_FLY;
        else if (movementInfo.flags & MOVEMENTFLAG_SWIMMING) move_type = MOVE_SWIM;
        else if (movementInfo.flags & MOVEMENTFLAG_WALK_MODE) move_type = MOVE_WALK;
        else move_type = MOVE_RUN;*/
        float delta_x = GetPlayer()->GetPositionX() - movementInfo.GetPos()->x;
        float delta_y = GetPlayer()->GetPositionY() - movementInfo.GetPos()->y;
        float delta_z = GetPlayer()->GetPositionZ() - movementInfo.GetPos()->z;
        float delta = sqrt(delta_x * delta_x + delta_y * delta_y); // Len of movement-vector via Pythagoras (a^2+b^2=Len^2)
        float tg_z = 0.0f; //tangens
        float delta_t = getMSTimeDiff(GetPlayer()->m_anti_lastmovetime,CurTime);

        GetPlayer()->m_anti_lastmovetime = CurTime;
        GetPlayer()->m_anti_MovedLen += delta;

       if (delta_t > 15000.0f)
        {   delta_t = 15000.0f;   }

        // Tangens of walking angel
        if (!(movementInfo.GetMovementFlags() & (MOVEFLAG_FLYING | MOVEFLAG_SWIMMING)))
        {
            tg_z = ((delta !=0.0f) && (delta_z > 0.0f)) ? (atan((delta_z*delta_z) / delta) * 180.0f / M_PI) : 0.0f;
        }

        //antiOFF fall-damage, MOVEMENTFLAG_UNK4 seted by client if player try movement when falling and unset in this case the MOVEMENTFLAG_FALLING flag.
        if ((!GetPlayer()->CanFly() && GetPlayer()->m_anti_BeginFallZ == INVALID_HEIGHT) &&
            (movementInfo.GetMovementFlags() & (MOVEFLAG_FALLING | MOVEFLAG_FALLINGFAR)) != 0)
        {
            GetPlayer()->m_anti_BeginFallZ=(float)(movementInfo.GetPos()->z);
        }

       if (GetPlayer()->m_anti_NextLenCheck <= CurTime)
       {
            // Check every 500ms is a lot more advisable then 1000ms, because normal movment packet arrives every 500ms
           uint32 OldNextLenCheck=GetPlayer()->m_anti_NextLenCheck;
            float delta_xyt=GetPlayer()->m_anti_MovedLen/(float)(getMSTimeDiff(OldNextLenCheck-500,CurTime));
            GetPlayer()->m_anti_NextLenCheck = CurTime+500;
           GetPlayer()->m_anti_MovedLen = 0.0f;
            static const float MaxDeltaXYT = sWorld.GetMvAnticheatMaxXYT();

           if (delta_xyt > MaxDeltaXYT && delta<=100.0f && GetPlayer()->GetZoneId() != 2257)
            {
                if (sWorld.GetMvAnticheatSpeedCheck())
                    Anti__CheatOccurred(CurTime,"Speed hack",delta_xyt,LookupOpcodeName(opcode),
                   (float)(GetPlayer()->GetMotionMaster()->GetCurrentMovementGeneratorType()),
                    (float)(getMSTimeDiff(OldNextLenCheck-500,CurTime)));
            }
       }

        if (delta > 100.0f && GetPlayer()->GetZoneId() != 2257)
        {
           if (sWorld.GetMvAnticheatTeleportCheck())
                Anti__ReportCheat("Tele hack",delta,LookupOpcodeName(opcode));
        }

        // Check for waterwalking . Fix new way of checking for waterwalking by Darky88
       if (movementInfo.HasMovementFlag(MOVEFLAG_WATERWALKING) &&
            !(GetPlayer()->HasAuraType(SPELL_AURA_WATER_WALK) || GetPlayer()->HasAuraType(SPELL_AURA_GHOST)))
        {
           if(sWorld.GetMvAnticheatWaterCheck())
                Anti__CheatOccurred(CurTime,"Water walking",0.0f,NULL,0.0f,(uint32)(movementInfo.GetMovementFlags()));
        }

        // Check for walking upwards a mountain while not beeing able to do that, New check by Darky88
        if ((delta_z < -2.3f) && (tg_z > 2.37f))
        {
            if (sWorld.GetMvAnticheatMountainCheck())
                Anti__CheatOccurred(CurTime,"Mountain hack",tg_z,NULL,delta,delta_z);
        }

        static const float DIFF_OVERGROUND = 10.0f;
        float Anti__GroundZ = GetPlayer()->GetTerrain()->GetHeight(GetPlayer()->GetPositionX(),GetPlayer()->GetPositionY(),MAX_HEIGHT);
        float Anti__FloorZ  = GetPlayer()->GetTerrain()->GetHeight(GetPlayer()->GetPositionX(),GetPlayer()->GetPositionY(),GetPlayer()->GetPositionZ());
        float Anti__MapZ = ((Anti__FloorZ <= (INVALID_HEIGHT+5.0f)) ? Anti__GroundZ : Anti__FloorZ) + DIFF_OVERGROUND;

        if (!GetPlayer()->CanFly() &&
            !GetPlayer()->GetTerrain()->IsUnderWater(movementInfo.GetPos()->x, movementInfo.GetPos()->y, movementInfo.GetPos()->z-7.0f) &&
            Anti__MapZ < GetPlayer()->GetPositionZ() && Anti__MapZ > (INVALID_HEIGHT+DIFF_OVERGROUND + 5.0f))
        {
            static const float DIFF_AIRJUMP=25.0f; // 25 is realy high, but to many false positives...

            // Air-Jump-Detection definitively needs a better way to be detected...
            if ((movementInfo.GetMovementFlags() & (MOVEFLAG_CAN_FLY | MOVEFLAG_FLYING | MOVEFLAG_ROOT)) != 0) // Fly Hack
            {
                // Fix Aura 55164
                if (!GetPlayer()->HasAura(55164) || !GetPlayer()->HasAuraType(SPELL_AURA_FEATHER_FALL))
                    if (sWorld.GetMvAnticheatFlyCheck())
                        Anti__CheatOccurred(CurTime,"Fly hack",
                            ((uint8)(GetPlayer()->HasAuraType(SPELL_AURA_FLY))) +
                            ((uint8)(GetPlayer()->HasAuraType(SPELL_AURA_MOD_FLIGHT_SPEED_MOUNTED))*2),
                            NULL,GetPlayer()->GetPositionZ()-Anti__MapZ);
            }

            // Need a better way to do that - currently a lot of fake alarms
            else if ((Anti__MapZ+DIFF_AIRJUMP < GetPlayer()->GetPositionZ() &&
                    (movementInfo.GetMovementFlags() & (MOVEFLAG_FALLINGFAR | MOVEFLAG_PENDINGSTOP))==0) ||
                    (Anti__MapZ < GetPlayer()->GetPositionZ() && opcode==MSG_MOVE_JUMP) &&
                    !GetPlayer()->HasAuraType(SPELL_AURA_FEATHER_FALL))
            {
                if (sWorld.GetMvAnticheatJumpCheck())
                    Anti__CheatOccurred(CurTime,"Possible Air Jump Hack",0.0f,LookupOpcodeName(opcode),0.0f,movementInfo.GetMovementFlags());
            }
        }

        /*if(Anti__FloorZ < -199900.0f && Anti__GroundZ >= -199900.0f &&
           GetPlayer()->GetPositionZ()+5.0f < Anti__GroundZ)
        {
            Anti__CheatOccurred(CurTime,"Teleport2Plane hack",
                                GetPlayer()->GetPositionZ(),NULL,Anti__GroundZ);
        }*/

        //Teleport To Plane checks
        if (movementInfo.GetPos()->z < 0.0001f && movementInfo.GetPos()->z > -0.0001f && (!movementInfo.HasMovementFlag(MovementFlags(MOVEFLAG_SWIMMING | MOVEFLAG_CAN_FLY | MOVEFLAG_FLYING))))
        {
            if(sWorld.GetMvAnticheatTeleport2PlaneCheck())
            {
                // Prevent using TeleportToPlan.
                Map *map = GetPlayer()->GetMap();
                if (map)
                {
                    float plane_z = map->GetTerrain()->GetHeight(movementInfo.GetPos()->x, movementInfo.GetPos()->y, MAX_HEIGHT) - movementInfo.GetPos()->z;
                    plane_z = (plane_z < -500.0f) ? 0 : plane_z; //check holes in heigth map
                    if(plane_z > 0.1f || plane_z < -0.1f)
                    {
                        if(sWorld.GetMvAnticheatTeleport2PlaneCheck())
                            Anti__CheatOccurred(CurTime,"Teleport2Plane hack",GetPlayer()->GetPositionZ(),NULL,plane_z);
                    }
                }
            }
        }
    }
    // <<---- anti-cheat features


    /* process position-change */
    HandleMoverRelocation(movementInfo);

    if (plMover)
        plMover->UpdateFallInformationIfNeed(movementInfo, opcode);

    // after move info set
    if (opcode == MSG_MOVE_SET_WALK_MODE || opcode == MSG_MOVE_SET_RUN_MODE)
        mover->UpdateWalkMode(mover, false);

    WorldPacket data(opcode, recv_data.size());
    data << mover->GetPackGUID();             // write guid
    movementInfo.Write(data);                               // write data
    mover->SendMessageToSetExcept(&data, _player);
}
Beispiel #6
0
void WorldSession::HandleMovementOpcodes( WorldPacket & recv_data )
{
    uint32 opcode = recv_data.GetOpcode();
    DEBUG_LOG("WORLD: Recvd %s (%u, 0x%X) opcode", LookupOpcodeName(opcode), opcode, opcode);
    recv_data.hexlike();

    Unit *mover = _player->GetMover();
    Player *plMover = mover->GetTypeId() == TYPEID_PLAYER ? (Player*)mover : NULL;

    // ignore, waiting processing in WorldSession::HandleMoveWorldportAckOpcode and WorldSession::HandleMoveTeleportAck
    if (plMover && plMover->IsBeingTeleported())
    {
        recv_data.rpos(recv_data.wpos());                   // prevent warnings spam
        return;
    }

    /* extract packet */
    ObjectGuid guid;
    MovementInfo movementInfo;

    recv_data >> guid.ReadAsPacked();
    recv_data >> movementInfo;
    /*----------------*/

    if (!Diamond::IsValidMapCoord(movementInfo.GetPos()->x, movementInfo.GetPos()->y, movementInfo.GetPos()->z, movementInfo.GetPos()->o))
    {
        recv_data.rpos(recv_data.wpos());                   // prevent warnings spam
        return;
    }

    /* handle special cases */
    if (movementInfo.HasMovementFlag(MOVEFLAG_ONTRANSPORT))
    {
        // transports size limited
        // (also received at zeppelin/lift leave by some reason with t_* as absolute in continent coordinates, can be safely skipped)
        if ( movementInfo.GetTransportPos()->x > 50 || movementInfo.GetTransportPos()->y > 50 || movementInfo.GetTransportPos()->z > 100 )
        {
            recv_data.rpos(recv_data.wpos());                   // prevent warnings spam
            return;
        }

        if ( !Diamond::IsValidMapCoord(movementInfo.GetPos()->x + movementInfo.GetTransportPos()->x, movementInfo.GetPos()->y + movementInfo.GetTransportPos()->y,
            movementInfo.GetPos()->z + movementInfo.GetTransportPos()->z, movementInfo.GetPos()->o + movementInfo.GetTransportPos()->o) )
        {
            recv_data.rpos(recv_data.wpos());                   // prevent warnings spam
            return;
        }

        // if we boarded a transport, add us to it
        if (plMover && !plMover->m_transport)
        {
            float trans_rad = movementInfo.GetTransportPos()->x*movementInfo.GetTransportPos()->x + movementInfo.GetTransportPos()->y*movementInfo.GetTransportPos()->y + movementInfo.GetTransportPos()->z*movementInfo.GetTransportPos()->z;
            if (trans_rad > 3600.0f) // transport radius = 60 yards //cheater with on_transport_flag
            {
                 return;
            }
            // elevators also cause the client to send MOVEFLAG_ONTRANSPORT - just unmount if the guid can be found in the transport list
            for (MapManager::TransportSet::const_iterator iter = sMapMgr.m_Transports.begin(); iter != sMapMgr.m_Transports.end(); ++iter)
            {
                if ((*iter)->GetObjectGuid() == movementInfo.GetTransportGuid())
                {
                    plMover->m_transport = (*iter);
                    (*iter)->AddPassenger(plMover);

                    if (plMover->GetVehicleKit())
                        plMover->GetVehicleKit()->RemoveAllPassengers();

                    break;
                }
            }
        }
    }
    else if (plMover && plMover->m_transport)               // if we were on a transport, leave
    {
        plMover->m_transport->RemovePassenger(plMover);
        plMover->m_transport = NULL;
        movementInfo.ClearTransportData();
    }

    // fall damage generation (ignore in flight case that can be triggered also at lags in moment teleportation to another map).
    if (opcode == MSG_MOVE_FALL_LAND && plMover && !plMover->IsTaxiFlying())
        plMover->HandleFall(movementInfo);

    if (plMover && (movementInfo.HasMovementFlag(MOVEFLAG_SWIMMING) != plMover->IsInWater()))
    {
        // now client not include swimming flag in case jumping under water
        plMover->SetInWater( !plMover->IsInWater() || plMover->GetBaseMap()->IsUnderWater(movementInfo.GetPos()->x, movementInfo.GetPos()->y, movementInfo.GetPos()->z) );
        if (plMover->GetBaseMap()->IsUnderWater(movementInfo.GetPos()->x, movementInfo.GetPos()->y, movementInfo.GetPos()->z-7.0f))
        {
            plMover->m_anti_BeginFallZ=INVALID_HEIGHT;
        }
    }

    // ---- anti-cheat features -->>>
    uint32 Anti_TeleTimeDiff=plMover ? time(NULL) - plMover->Anti__GetLastTeleTime() : time(NULL);
    static const uint32 Anti_TeleTimeIgnoreDiff=sWorld.GetMvAnticheatIgnoreAfterTeleport();
    if (plMover && (plMover->m_transport == 0) && sWorld.GetMvAnticheatEnable() &&
        GetPlayer()->GetSession()->GetSecurity() <= sWorld.GetMvAnticheatGmLevel() &&
        GetPlayer()->GetMotionMaster()->GetCurrentMovementGeneratorType()!=FLIGHT_MOTION_TYPE &&
        Anti_TeleTimeDiff>Anti_TeleTimeIgnoreDiff)
    {
        const uint32 CurTime=getMSTime();
        if (getMSTimeDiff(GetPlayer()->m_anti_lastalarmtime,CurTime) > sWorld.GetMvAnticheatAlarmPeriod())
        {
            GetPlayer()->m_anti_alarmcount = 0;
        }
        /* I really don't care about movement-type yet (todo)
        UnitMoveType move_type;

        if (movementInfo.flags & MOVEMENTFLAG_FLYING) move_type = MOVE_FLY;
        else if (movementInfo.flags & MOVEMENTFLAG_SWIMMING) move_type = MOVE_SWIM;
        else if (movementInfo.flags & MOVEMENTFLAG_WALK_MODE) move_type = MOVE_WALK;
        else move_type = MOVE_RUN;*/

        float delta_x = GetPlayer()->GetPositionX() - movementInfo.GetPos()->x;
        float delta_y = GetPlayer()->GetPositionY() - movementInfo.GetPos()->y;
        float delta_z = GetPlayer()->GetPositionZ() - movementInfo.GetPos()->z;
        float delta = sqrt(delta_x * delta_x + delta_y * delta_y); // Len of movement-vector via Pythagoras (a^2+b^2=Len^2)
        float tg_z = 0.0f; //tangens
        float delta_t = getMSTimeDiff(GetPlayer()->m_anti_lastmovetime,CurTime);

        GetPlayer()->m_anti_lastmovetime = CurTime;
        GetPlayer()->m_anti_MovedLen += delta;

        if (delta_t > 15000.0f)
        {   delta_t = 15000.0f;   }

        // Tangens of walking angel
        if (!(movementInfo.GetMovementFlags() & (MOVEFLAG_FLYING | MOVEFLAG_SWIMMING)))
        {
            tg_z = ((delta !=0.0f) && (delta_z > 0.0f)) ? (atan((delta_z*delta_z) / delta) * 180.0f / M_PI) : 0.0f;
        }

        //antiOFF fall-damage, MOVEMENTFLAG_UNK4 seted by client if player try movement when falling and unset in this case the MOVEMENTFLAG_FALLING flag. 
        if ((!GetPlayer()->CanFly() && GetPlayer()->m_anti_BeginFallZ == INVALID_HEIGHT) &&
            (movementInfo.GetMovementFlags() & (MOVEFLAG_FALLING | MOVEFLAG_FALLINGFAR)) != 0)
        {
            GetPlayer()->m_anti_BeginFallZ=(float)(movementInfo.GetPos()->z);
        }

        if (GetPlayer()->m_anti_NextLenCheck <= CurTime)
        {
            // Check every 500ms is a lot more advisable then 1000ms, because normal movment packet arrives every 500ms
            uint32 OldNextLenCheck=GetPlayer()->m_anti_NextLenCheck;
            float delta_xyt=GetPlayer()->m_anti_MovedLen/(float)(getMSTimeDiff(OldNextLenCheck-500,CurTime));
            GetPlayer()->m_anti_NextLenCheck = CurTime+500;
            GetPlayer()->m_anti_MovedLen = 0.0f;
            static const float MaxDeltaXYT = sWorld.GetMvAnticheatMaxXYT();

            if (delta_xyt > MaxDeltaXYT && delta<=100.0f && GetPlayer()->GetZoneId() != 2257)
            {
                if (sWorld.GetMvAnticheatSpeedCheck())
                    Anti__CheatOccurred(CurTime,"Speed hack",delta_xyt,LookupOpcodeName(opcode),
                    (float)(GetPlayer()->GetMotionMaster()->GetCurrentMovementGeneratorType()),
                    (float)(getMSTimeDiff(OldNextLenCheck-500,CurTime)));
            }
        }

        if (delta > 100.0f && GetPlayer()->GetZoneId() != 2257)
        {
            if (sWorld.GetMvAnticheatTeleportCheck())
                Anti__ReportCheat("Tele hack",delta,LookupOpcodeName(opcode));
        }

        // Check for waterwalking . Fix new way of checking for waterwalking by Darky88
        if (movementInfo.HasMovementFlag(MOVEFLAG_WATERWALKING) &&
            !(GetPlayer()->HasAuraType(SPELL_AURA_WATER_WALK) || GetPlayer()->HasAuraType(SPELL_AURA_GHOST)))
        {
            if (sWorld.GetMvAnticheatWaterCheck())
                Anti__CheatOccurred(CurTime,"Water walking",0.0f,NULL,0.0f,(uint32)(movementInfo.GetMovementFlags()));
        }

        // Check for walking upwards a mountain while not beeing able to do that, New check by Darky88 
        if ((delta_z < -2.3f) && (tg_z > 2.37f))
        {
            if (sWorld.GetMvAnticheatMountainCheck())
                Anti__CheatOccurred(CurTime,"Mountain hack",tg_z,NULL,delta,delta_z);
        }

        static const float DIFF_OVERGROUND = 10.0f;
        float Anti__GroundZ = GetPlayer()->GetMap()->GetHeight(GetPlayer()->GetPositionX(),GetPlayer()->GetPositionY(),MAX_HEIGHT);
        float Anti__FloorZ  = GetPlayer()->GetMap()->GetHeight(GetPlayer()->GetPositionX(),GetPlayer()->GetPositionY(),GetPlayer()->GetPositionZ());
        float Anti__MapZ = ((Anti__FloorZ <= (INVALID_HEIGHT+5.0f)) ? Anti__GroundZ : Anti__FloorZ) + DIFF_OVERGROUND;
         
        if (!GetPlayer()->CanFly() &&
            !GetPlayer()->GetBaseMap()->IsUnderWater(movementInfo.GetPos()->x, movementInfo.GetPos()->y, movementInfo.GetPos()->z-7.0f) &&
            Anti__MapZ < GetPlayer()->GetPositionZ() && Anti__MapZ > (INVALID_HEIGHT+DIFF_OVERGROUND + 5.0f))
        {
            static const float DIFF_AIRJUMP=25.0f; // 25 is realy high, but to many false positives...

            // Air-Jump-Detection definitively needs a better way to be detected...
            if ((movementInfo.GetMovementFlags() & (MOVEFLAG_CAN_FLY | MOVEFLAG_FLYING | MOVEFLAG_ROOT)) != 0) // Fly Hack
            {
                // Fix Aura 55164
                if (!GetPlayer()->HasAura(55164) || !GetPlayer()->HasAuraType(SPELL_AURA_FEATHER_FALL))
                    if (sWorld.GetMvAnticheatFlyCheck())
                        Anti__CheatOccurred(CurTime,"Fly hack",
                            ((uint8)(GetPlayer()->HasAuraType(SPELL_AURA_FLY))) +
                            ((uint8)(GetPlayer()->HasAuraType(SPELL_AURA_MOD_FLIGHT_SPEED_MOUNTED))*2),
                            NULL,GetPlayer()->GetPositionZ()-Anti__MapZ);
            }

            // Need a better way to do that - currently a lot of fake alarms
            else if ((Anti__MapZ+DIFF_AIRJUMP < GetPlayer()->GetPositionZ() &&
                    (movementInfo.GetMovementFlags() & (MOVEFLAG_FALLINGFAR | MOVEFLAG_PENDINGSTOP))==0) ||
                    (Anti__MapZ < GetPlayer()->GetPositionZ() && opcode==MSG_MOVE_JUMP) &&
                    !GetPlayer()->HasAuraType(SPELL_AURA_FEATHER_FALL))
            {
                if (sWorld.GetMvAnticheatJumpCheck())
                    Anti__CheatOccurred(CurTime,"Possible Air Jump Hack",0.0f,LookupOpcodeName(opcode),0.0f,movementInfo.GetMovementFlags());
            }
        }

        /*if (Anti__FloorZ < -199900.0f && Anti__GroundZ >= -199900.0f &&
           GetPlayer()->GetPositionZ()+5.0f < Anti__GroundZ)
        {
            Anti__CheatOccurred(CurTime,"Teleport2Plane hack",
                                GetPlayer()->GetPositionZ(),NULL,Anti__GroundZ);
        }*/

        //Teleport To Plane checks
        if (movementInfo.GetPos()->z < 0.0001f && movementInfo.GetPos()->z > -0.0001f && (!movementInfo.HasMovementFlag(MovementFlags(MOVEFLAG_SWIMMING | MOVEFLAG_CAN_FLY | MOVEFLAG_FLYING))))
        {
            if (sWorld.GetMvAnticheatTeleport2PlaneCheck())
            {
                // Prevent using TeleportToPlan.
                Map *map = GetPlayer()->GetMap();
                if (map)
                {
                    float plane_z = map->GetHeight(movementInfo.GetPos()->x, movementInfo.GetPos()->y, MAX_HEIGHT) - movementInfo.GetPos()->z;
                    plane_z = (plane_z < -500.0f) ? 0 : plane_z; //check holes in heigth map
                    if (plane_z > 0.1f || plane_z < -0.1f)
                    {
                        if (sWorld.GetMvAnticheatTeleport2PlaneCheck())
                            Anti__CheatOccurred(CurTime,"Teleport2Plane hack",GetPlayer()->GetPositionZ(),NULL,plane_z);
                    }
                }
            }
        }
    }
    // <<---- anti-cheat features

    /* process position-change */
    movementInfo.UpdateTime(getMSTime());

    WorldPacket data(opcode, recv_data.size());
    data.appendPackGUID(mover->GetGUID());                  // write guid
    movementInfo.Write(data);                               // write data
    mover->SendMessageToSetExcept(&data, _player);

    mover->m_movementInfo = movementInfo;
    mover->SetPosition(movementInfo.GetPos()->x, movementInfo.GetPos()->y, movementInfo.GetPos()->z, movementInfo.GetPos()->o);

    if (plMover)                                             // nothing is charmed, or player charmed
    {
        plMover->UpdateFallInformationIfNeed(movementInfo, opcode);

        // after move info set
        if ((opcode == MSG_MOVE_SET_WALK_MODE || opcode == MSG_MOVE_SET_RUN_MODE))
            plMover->UpdateWalkMode(plMover, false);

        if (plMover->isMovingOrTurning())
            plMover->RemoveSpellsCausingAura(SPELL_AURA_FEIGN_DEATH);

        if (movementInfo.GetPos()->z < -500.0f)
        {
            if (plMover->InBattleGround()
                && plMover->GetBattleGround()
                && plMover->GetBattleGround()->HandlePlayerUnderMap(_player))
            {
                // do nothing, the handle already did if returned true
            }
            else
            {
                // NOTE: this is actually called many times while falling
                // even after the player has been teleported away
                // TODO: discard movement packets after the player is rooted
                if (plMover->isAlive())
                {
                    plMover->EnvironmentalDamage(DAMAGE_FALL_TO_VOID, plMover->GetMaxHealth());
                    // pl can be alive if GM/etc
                    if (!plMover->isAlive())
                    {
                        // change the death state to CORPSE to prevent the death timer from
                        // starting in the next player update
                        plMover->KillPlayer();
                        plMover->BuildPlayerRepop();
                    }
                }

                // cancel the death timer here if started
                plMover->RepopAtGraveyard();
            }
        }
    }
}
Beispiel #7
0
void WorldSession::HandleMovementOpcodes( WorldPacket & recv_data )
{
    uint32 opcode = recv_data.GetOpcode();
    DEBUG_LOG("WORLD: Recvd %s (%u, 0x%X) opcode", LookupOpcodeName(opcode), opcode, opcode);
    recv_data.hexlike();

    Unit *mover = _player->GetMover();
    Player *plMover = mover->GetTypeId() == TYPEID_PLAYER ? (Player*)mover : NULL;

    // ignore, waiting processing in WorldSession::HandleMoveWorldportAckOpcode and WorldSession::HandleMoveTeleportAck
    if(plMover && plMover->IsBeingTeleported())
    {
        recv_data.rpos(recv_data.wpos());                   // prevent warnings spam
        return;
    }

    /* extract packet */
    ObjectGuid guid;
    MovementInfo movementInfo;

    recv_data >> guid.ReadAsPacked();
    recv_data >> movementInfo;
    /*----------------*/

    if (!VerifyMovementInfo(movementInfo, guid))
        return;

    // fall damage generation (ignore in flight case that can be triggered also at lags in moment teleportation to another map).
    if (opcode == MSG_MOVE_FALL_LAND && plMover && !plMover->IsTaxiFlying())
        plMover->HandleFall(movementInfo);

    // Movement safety checks
    uint32 Anti_TeleTimeDiff=plMover ? time(NULL) - plMover->Anti__GetLastTeleTime() : time(NULL);
    static const uint32 Anti_TeleTimeIgnoreDiff=10;

    if (plMover && plMover->IsInWorld() && GetSecurity() == SEC_PLAYER && (plMover->m_transport == 0) &&
        GetPlayer()->GetMotionMaster()->GetCurrentMovementGeneratorType()!=FLIGHT_MOTION_TYPE &&
        Anti_TeleTimeDiff>Anti_TeleTimeIgnoreDiff)
    {
        const uint32 CurTime = WorldTimer::getMSTime();
        if (WorldTimer::getMSTimeDiff(GetPlayer()->m_anti_lastalarmtime,CurTime) > 5000)
        {
            GetPlayer()->m_anti_alarmcount = 0;
        }

        float delta_x = GetPlayer()->GetPositionX() - movementInfo.GetPos()->x;
        float delta_y = GetPlayer()->GetPositionY() - movementInfo.GetPos()->y;
        float delta_z = GetPlayer()->GetPositionZ() - movementInfo.GetPos()->z;
        float delta = sqrt(delta_x * delta_x + delta_y * delta_y); // Len of movement-vector via Pythagoras (a^2+b^2=Len^2)
        float tg_z = 0.0f; //tangens
        float delta_t = WorldTimer::getMSTimeDiff(GetPlayer()->m_anti_lastmovetime,CurTime);

        GetPlayer()->m_anti_lastmovetime = CurTime;
        GetPlayer()->m_anti_MovedLen += delta;

        if (delta_t > 15000.0f)
        {   delta_t = 15000.0f;   }

        // Tangens of walking angel
        if (!(movementInfo.GetMovementFlags() & (MOVEFLAG_FLYING | MOVEFLAG_SWIMMING)))
        {
            tg_z = ((delta !=0.0f) && (delta_z > 0.0f)) ? (atan((delta_z*delta_z) / delta) * 180.0f / M_PI) : 0.0f;
        }


        if (GetPlayer()->m_anti_NextLenCheck <= CurTime)
        {
            // Check every 500ms is a lot more advisable then 1000ms, because normal movment packet arrives every 500ms
            uint32 OldNextLenCheck=GetPlayer()->m_anti_NextLenCheck;
            float delta_xyt=GetPlayer()->m_anti_MovedLen/(float)(WorldTimer::getMSTimeDiff(OldNextLenCheck-500,CurTime));
            GetPlayer()->m_anti_NextLenCheck = CurTime+500;
            GetPlayer()->m_anti_MovedLen = 0.0f;
            static const float MaxDeltaXYT = 0.035f;

            if (delta_xyt > MaxDeltaXYT && delta<=100.0f && GetPlayer()->GetZoneId() != 2257)
                sLog.outError("ANTI-CHEAT ENGINE: Possible hack detected (speedhack) of %s ", GetPlayer()->GetGuidStr().c_str());
        }

        if (delta > 100.0f && GetPlayer()->GetZoneId() != 2257)
        {
            sLog.outError("ANTI-CHEAT ENGINE: Possible hack detected (telehack) of %s ", GetPlayer()->GetGuidStr().c_str());
            //Anti__ReportCheat("Tele hack",delta,LookupOpcodeName(opcode));
        }
    }

    /* process position-change */
    HandleMoverRelocation(movementInfo);

    if (plMover)
        plMover->UpdateFallInformationIfNeed(movementInfo, opcode);

    // after move info set
    if (opcode == MSG_MOVE_SET_WALK_MODE || opcode == MSG_MOVE_SET_RUN_MODE)
        mover->UpdateWalkMode(mover, false);

    WorldPacket data(opcode, recv_data.size());
    data << mover->GetPackGUID();             // write guid
    movementInfo.Write(data);                               // write data
    mover->SendMessageToSetExcept(&data, _player);
}
void WorldSession::HandleMovementOpcodes(WorldPacket& recv_data)
{
    Unit* mover = _player->m_mover;

    ASSERT(mover != NULL);                                  // there must always be a mover

    Player* plMover = mover->GetTypeId() == TYPEID_PLAYER ? mover->ToPlayer() : NULL;

    // ignore, waiting processing in WorldSession::HandleMoveWorldportAckOpcode and WorldSession::HandleMoveTeleportAck
    if (plMover && plMover->IsBeingTeleported())
    {
        recv_data.rpos(recv_data.wpos());                   // prevent warnings spam
        return;
    }

    //get opcode
    uint16 opcode = recv_data.GetOpcode();

    /* extract packet */
    MovementInfo movementInfo;
    recv_data >> movementInfo;
    /*----------------*/

    /*if (recv_data.size() != recv_data.rpos())
    {
        sLog.outError("MovementHandler: player %s (guid %d, account %u) sent a packet (opcode %u) that is %u bytes larger than it should be. Kicked as cheater.", _player->GetName(), _player->GetGUIDLow(), _player->GetSession()->GetAccountId(), opcode, recv_data.size() - recv_data.rpos());
        KickPlayer();
        return;
    }*/

    if (!BlizzLike::IsValidMapCoord(movementInfo.GetPos()->GetPositionX(), movementInfo.GetPos()->GetPositionY(), movementInfo.GetPos()->GetPositionZ(), movementInfo.GetPos()->GetOrientation()))
        return;

    //Save movement flags
    mover->SetUnitMovementFlags(movementInfo.GetMovementFlags());

    /* handle special cases */
    if (movementInfo.HasMovementFlag(MOVEFLAG_ONTRANSPORT))
    {
        // transports size limited
        // (also received at zeppelin/lift leave by some reason with t_* as absolute in continent coordinates, can be safely skipped)
        if (movementInfo.GetTransportPos()->GetPositionX() > 50 || movementInfo.GetTransportPos()->GetPositionY() > 50 || movementInfo.GetTransportPos()->GetPositionZ() > 50)
            return;

        if (!BlizzLike::IsValidMapCoord(movementInfo.GetPos()->GetPositionX() + movementInfo.GetTransportPos()->GetPositionX(), movementInfo.GetPos()->GetPositionY() + movementInfo.GetTransportPos()->GetPositionY(),
            movementInfo.GetPos()->GetPositionZ() + movementInfo.GetTransportPos()->GetPositionZ(), movementInfo.GetPos()->GetOrientation() + movementInfo.GetTransportPos()->GetOrientation()))
            return;

        // if we boarded a transport, add us to it
        if (plMover && !plMover->m_transport)
        {
            // elevators also cause the client to send MOVEFLAG_ONTRANSPORT - just unmount if the guid can be found in the transport list
            for (MapManager::TransportSet::iterator iter = MapManager::Instance().m_Transports.begin(); iter != MapManager::Instance().m_Transports.end(); ++iter)
            {
                if ((*iter)->GetGUID() == movementInfo.t_guid)
                {
                    // unmount before boarding
                    plMover->RemoveSpellsCausingAura(SPELL_AURA_MOUNTED);

                    plMover->m_transport = (*iter);
                    (*iter)->AddPassenger(plMover);
                    break;
                }
            }
        }
    }
    else if (plMover && plMover->m_transport)               // if we were on a transport, leave
    {
        plMover->m_transport->RemovePassenger(plMover);
        plMover->m_transport = NULL;
        movementInfo.ClearTransportData();
    }

    // fall damage generation (ignore in flight case that can be triggered also at lags in moment teleportation to another map).
    if (opcode == MSG_MOVE_FALL_LAND && plMover && !plMover->isInFlight())
        plMover->HandleFallDamage(movementInfo);

    if (plMover && (movementInfo.HasMovementFlag(MOVEFLAG_SWIMMING) != plMover->IsInWater()))
    {
        // now client not include swimming flag in case jumping under water
        plMover->SetInWater(!plMover->IsInWater() || plMover->GetBaseMap()->IsUnderWater(movementInfo.GetPos()->GetPositionX(), movementInfo.GetPos()->GetPositionY(), movementInfo.GetPos()->GetPositionZ()));
    }

    /* process position-change */
    recv_data.put<uint32>(5, getMSTime());                  // offset flags(4) + unk(1)
    WorldPacket data(opcode, mover->GetPackGUID().size() + recv_data.size());
    data << mover->GetPackGUID();
    data.append(recv_data.contents(), recv_data.size());
    if (mover->isCharmed() && mover->GetCharmer())
        mover->GetCharmer()->SendMessageToSet(&data, false);
    else
        mover->SendMessageToSet(&data, false);

    mover->m_movementInfo = movementInfo;
    mover->SetPosition(movementInfo.GetPos()->GetPositionX(), movementInfo.GetPos()->GetPositionY(), movementInfo.GetPos()->GetPositionZ(), movementInfo.GetPos()->GetOrientation());

    if (plMover)                                            // nothing is charmed, or player charmed
    {
        if (opcode == MSG_MOVE_FALL_LAND || plMover->m_lastFallTime > movementInfo.GetFallTime() || plMover->m_lastFallZ < movementInfo.GetPos()->GetPositionZ())
            plMover->SetFallInformation(movementInfo.GetFallTime(), movementInfo.GetPos()->GetPositionZ());

        // we should add the check only for class hunter
        if (plMover->isMovingOrTurning())
            plMover->RemoveSpellsCausingAura(SPELL_AURA_FEIGN_DEATH);

        if (movementInfo.GetPos()->GetPositionZ() < -500.0f)
            plMover->HandleFallUnderMap();
    }
}
Beispiel #9
0
void WorldSession::HandleMovementOpcodes(WorldPacket& recvData)
{
    uint16 opcode = recvData.GetOpcode();

    Unit* mover = _player->m_mover;

    ASSERT(mover != NULL);                      // there must always be a mover

    Player* plrMover = mover->ToPlayer();

    // ignore, waiting processing in WorldSession::HandleMoveWorldportAckOpcode and WorldSession::HandleMoveTeleportAck
    if (plrMover && plrMover->IsBeingTeleported())
    {
        recvData.rfinish();                     // prevent warnings spam
        return;
    }

    /* extract packet */
    uint64 guid;

    recvData.readPackGUID(guid);

    MovementInfo movementInfo;
    movementInfo.guid = guid;
    ReadMovementInfo(recvData, &movementInfo);

    recvData.rfinish();                         // prevent warnings spam

    // prevent tampered movement data
    if (guid != mover->GetGUID())
        return;

    if (!movementInfo.pos.IsPositionValid())
    {
        recvData.rfinish();                     // prevent warnings spam
        return;
    }
	
    // Tempfix for Drink Exploit (Thx jetwanx) 
    if (mover->IsSitState() && movementInfo.GetMovementFlags() & (MOVEMENTFLAG_MASK_MOVING | MOVEMENTFLAG_MASK_TURNING))
        mover->SetStandState(UNIT_STAND_STATE_STAND);


    /* handle special cases */
    if (movementInfo.flags & MOVEMENTFLAG_ONTRANSPORT)
    {
        // transports size limited
        // (also received at zeppelin leave by some reason with t_* as absolute in continent coordinates, can be safely skipped)
        if (movementInfo.transport.pos.GetPositionX() > 50 || movementInfo.transport.pos.GetPositionY() > 50 || movementInfo.transport.pos.GetPositionZ() > 50)
        {
            recvData.rfinish();                 // prevent warnings spam
            return;
        }

        if (!Trinity::IsValidMapCoord(movementInfo.pos.GetPositionX() + movementInfo.transport.pos.GetPositionX(), movementInfo.pos.GetPositionY() + movementInfo.transport.pos.GetPositionY(),
            movementInfo.pos.GetPositionZ() + movementInfo.transport.pos.GetPositionZ(), movementInfo.pos.GetOrientation() + movementInfo.transport.pos.GetOrientation()))
        {
            recvData.rfinish();                 // prevent warnings spam
            return;
        }

        // if we boarded a transport, add us to it
        if (plrMover)
        {
            if (!plrMover->GetTransport())
            {
                // elevators also cause the client to send MOVEMENTFLAG_ONTRANSPORT - just dismount if the guid can be found in the transport list
                for (MapManager::TransportSet::const_iterator iter = sMapMgr->m_Transports.begin(); iter != sMapMgr->m_Transports.end(); ++iter)
                {
                    if ((*iter)->GetGUID() == movementInfo.transport.guid)
                    {
                        plrMover->m_transport = *iter;
                        (*iter)->AddPassenger(plrMover);
                        break;
                    }
                }
            }
            else if (plrMover->GetTransport()->GetGUID() != movementInfo.transport.guid)
            {
                bool foundNewTransport = false;
                plrMover->m_transport->RemovePassenger(plrMover);
                for (MapManager::TransportSet::const_iterator iter = sMapMgr->m_Transports.begin(); iter != sMapMgr->m_Transports.end(); ++iter)
                {
                    if ((*iter)->GetGUID() == movementInfo.transport.guid)
                    {
                        foundNewTransport = true;
                        plrMover->m_transport = *iter;
                        (*iter)->AddPassenger(plrMover);
                        break;
                    }
                }

                if (!foundNewTransport)
                {
                    plrMover->m_transport = NULL;
                    movementInfo.transport.Reset();
                }
            }
        }

        if (!mover->GetTransport() && !mover->GetVehicle())
        {
            GameObject* go = mover->GetMap()->GetGameObject(movementInfo.transport.guid);
            if (!go || go->GetGoType() != GAMEOBJECT_TYPE_TRANSPORT)
                movementInfo.flags &= ~MOVEMENTFLAG_ONTRANSPORT;
        }
    }
    else if (plrMover && plrMover->GetTransport())                // if we were on a transport, leave
    {
        plrMover->m_transport->RemovePassenger(plrMover);
        plrMover->m_transport = NULL;
        movementInfo.transport.Reset();
    }

    // fall damage generation (ignore in flight case that can be triggered also at lags in moment teleportation to another map).
    if (opcode == MSG_MOVE_FALL_LAND && plrMover && !plrMover->IsInFlight())
        plrMover->HandleFall(movementInfo);

    if (plrMover && ((movementInfo.flags & MOVEMENTFLAG_SWIMMING) != 0) != plrMover->IsInWater())
    {
        // now client not include swimming flag in case jumping under water
        plrMover->SetInWater(!plrMover->IsInWater() || plrMover->GetBaseMap()->IsUnderWater(movementInfo.pos.GetPositionX(), movementInfo.pos.GetPositionY(), movementInfo.pos.GetPositionZ()));
    }

    /*----------------------*/

    /* process position-change */
    WorldPacket data(opcode, recvData.size());
    movementInfo.time = getMSTime();
    movementInfo.guid = mover->GetGUID();
    WriteMovementInfo(&data, &movementInfo);
    mover->SendMessageToSet(&data, _player);

    mover->m_movementInfo = movementInfo;

    // this is almost never true (not sure why it is sometimes, but it is), normally use mover->IsVehicle()
    if (mover->GetVehicle())
    {
        mover->SetOrientation(movementInfo.pos.GetOrientation());
        return;
    }

    mover->UpdatePosition(movementInfo.pos);

    if (plrMover)                                            // nothing is charmed, or player charmed
    {
        plrMover->UpdateFallInformationIfNeed(movementInfo, opcode);

        float underMapValueZ;	
       switch (plrMover->GetMapId())	
        {
            case 617: underMapValueZ = 3.0f; break; // Dalaran Sewers
            case 618: underMapValueZ = 28.0f; break; // Ring of Valor
            case 562: underMapValueZ = -10.0f; break; // Blade Edge Arena
            case 559: underMapValueZ = -18.0f; break; // Nagrand arena
            case 572: underMapValueZ = 28.0f; break; // Lordearon
            case 571: underMapValueZ = -400.0f; break; // Northrend
            default: underMapValueZ = -500.0f; break;
        }

        if (movementInfo.pos.GetPositionZ() < underMapValueZ)
        {
		    if (underMapValueZ != -500) // For Custom Arena Zone
			{
			    // Hackfix for ArenaUnderZ -> Teleport WHY TRINITY BREAK IT!
			    if (plrMover->GetMapId() == 572) // Lordaeron Arena 
                    plrMover->TeleportTo(572, 1286.14868f, 1667.32f, 41.0f, 1.6f); //
					
			    if (plrMover->GetMapId() == 559) // Nagrand Arena 
                     plrMover->TeleportTo(559, 4052.79868f, 2926.32f, 16.0f, 1.6f); 
			
			    if (plrMover->GetMapId() == 562) // Blade Edge arena 6237.797363 261.146088 2 0.7
                     plrMover->TeleportTo(562, 6237.79768f, 261.142f, 2.0f, 4.0f); 
					 
				if (plrMover->GetMapId() == 617) // Dalaran Arena 1292.31384 790.40667 8
                     plrMover->TeleportTo(617, 1292.34868f, 790.40f, 8.5f, 1.6f); 
			
			}
            else if (!(plrMover->GetBattleground() && plrMover->GetBattleground()->HandlePlayerUnderMap(_player)))
            {
                // NOTE: this is actually called many times while falling
                // even after the player has been teleported away
                /// @todo discard movement packets after the player is rooted
                if (plrMover->IsAlive())
                {
                    plrMover->EnvironmentalDamage(DAMAGE_FALL_TO_VOID, GetPlayer()->GetMaxHealth());
                    // player can be alive if GM/etc
                    // change the death state to CORPSE to prevent the death timer from
                    // starting in the next player update
                    if (!plrMover->IsAlive())
                        plrMover->KillPlayer();
                }
            }
        }
    }
}