Method update

src/OpenLoco/src/Vehicles/VehicleTail.cpp:67–117

0x004AA24A

    // 0x004AA24A
    bool VehicleTail::update()
    {
        if (mode == TransportMode::air || mode == TransportMode::water)
        {
            return true;
        }

        const auto _oldRoutingHandle = routingHandle;
        const World::Pos3 _oldTilePos = World::Pos3(tileX, tileY, tileBaseZ * World::kSmallZStep);

        const auto motionResult = updateTrackMotion(getVehicleUpdateDistances().unkDistance1, false);

        if (motionResult.hasFlags(UpdateVar1136114Flags::noRouteFound))
        {
            destroyTrain();
            return false;
        }

        if (_oldRoutingHandle == routingHandle)
        {
            return true;
        }

        const auto ref = RoutingManager::getRouting(_oldRoutingHandle);
        TrackAndDirection trackAndDir((ref & 0x1F8) >> 3, ref & 0x7);
        RoutingManager::freeRouting(_oldRoutingHandle);

        if (mode == TransportMode::road)
        {
            updateRoadTileOccupancy(_oldTilePos, trackAndDir.road, false);
        }
        else
        {
            if (ref & (1 << 15))
            {
                setSignalState(_oldTilePos, trackAndDir.track, trackType, 0);
            }

            const auto& trackSize = World::TrackData::getUnkTrack(ref & World::Track::AdditionalTaDFlags::basicTaDMask);
            auto nextTile = _oldTilePos + trackSize.pos;
            if (trackSize.rotationEnd < 12)
            {
                nextTile -= World::Pos3{ World::kRotationOffset[trackSize.rotationEnd], 0 };
            }
            auto trackAndDirection2 = trackAndDir;
            trackAndDirection2.track.setReversed(!trackAndDirection2.track.isReversed());
            sub_4A2AD7(nextTile, trackAndDirection2.track, owner, trackType);
            leaveLevelCrossing(_oldTilePos, trackAndDir.track, 9);
        }
        return true;
    }

    // 0x004B090F
    void liftUpTail(VehicleTail& tail)