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void Unit::BuildMovementPacket(ByteBuffer *data) const {      if(GetTypeId() == TYPEID_PLAYER)      {            // remove unknown, unused etc flags for now            const_cast<Unit*>(this)->RemoveUnitMovementFlag(MOVEMENTFLAG_SPLINE2);            if (isInFlight())            {                WPAssert(const_cast<Unit*>(this)->GetMotionMaster()->GetCurrentMovementGeneratorType() == FLIGHT_MOTION_TYPE);                const_cast<Unit*>(this)->AddUnitMovementFlag(MOVEMENTFLAG_FORWARD | MOVEMENTFLAG_SPLINE2);            }      }     *data <<