int serial_fd;
bool power;
+ bool halted;
std::map<unsigned, Locomotive> locos;
std::map<unsigned, Turnout> turnouts;
std::map<unsigned, Sensor> sensors;
virtual void set_power(bool);
virtual bool get_power() const { return power; }
+ virtual void halt(bool);
+ virtual bool is_halted() const { return halted; }
virtual void add_loco(unsigned);
virtual void set_loco_speed(unsigned, unsigned);