+ std::set<Route *> routes;
+ std::set<Block *> blocks;
+ std::map<unsigned, Train *> trains;
+ std::set<Vehicle *> vehicles;
+ Msp::Time::TimeStamp last_tick;
+ unsigned next_turnout_id;
+
+public:
+ Layout(Catalogue &, Driver * = 0);
+ ~Layout();
+
+ Catalogue &get_catalogue() const { return catalogue; }
+ bool has_driver() const { return driver; }
+ Driver &get_driver() const;
+ const std::string &get_base() const { return base; }
+
+ void add_track(Track &);
+ const std::set<Track *> &get_tracks() const { return tracks; }
+ void remove_track(Track &);
+ unsigned allocate_turnout_id(bool);
+
+ void add_block(Block &);
+ Block &get_block(unsigned) const;
+ const std::set<Block *> &get_blocks() const { return blocks; }
+ void create_blocks();
+ void create_blocks(Track &);
+ void remove_block(Block &);
+
+ void add_route(Route &);
+ const std::set<Route *> &get_routes() const { return routes; }
+ Route &get_route(const std::string &) const;
+ void update_routes();
+ void remove_route(Route &);
+
+ void add_train(Train &);
+ Train &get_train(unsigned) const;
+ const std::map<unsigned, Train *> &get_trains() const { return trains; }
+ void remove_train(Train &);
+
+ void add_vehicle(Vehicle &);
+ void remove_vehicle(Vehicle &);
+
+ void tick();
+ void emergency(const std::string &);
+
+ void save(const std::string &);
+ void save_trains(const std::string &);
+private:
+ void sensor_event(unsigned, bool);