- std::list<Track3D *> tracks;
- std::list<Vehicle3D *> vehicles;
- Msp::GL::Scene scene;
- Msp::GL::Scene ep_scene;
- Msp::GL::Scene path_scene;
+ TrackMap tracks;
+ VehicleMap vehicles;
+ Msp::GL::InstanceScene scene;
+ Msp::GL::SimpleScene ep_scene;
+ Msp::GL::InstanceScene path_scene;