void add_track(Track3D &);
void remove_track(Track3D &);
const std::list<Track3D *> &get_tracks() const { return tracks; }
- Track3D &get_track(const Track &) const;
+ Track3D &get_track(Track &) const;
Track3D *pick_track(float, float, float) const;
void add_vehicle(Vehicle3D &);