Road.h

00001 #ifndef _ROAD_H_
00002 #define _ROAD_H_
00003 
00004 #include "AccCar.h"
00005 #include "mbed.h"
00006 
00007 // no need to make it dynamic since we know our max upfront
00008 #define MAX_CARS_ON_ROAD 5
00009 #define MAC_CAR_BITS_ON_ROAD 1 << MAX_CAR_ON_ROAD
00010 
00011 class AccCar;
00012 
00013 class Road {
00014 public:
00015     EventFlags go_flags;
00016     EventFlags done_flags;
00017 
00018     Road( int id );
00019     
00020     void add_acc_car(AccCar* car);
00021     
00022     void let_cars_update();
00023     
00024     void wait_for_car_update();
00025     
00026     bool can_car_enter(int speed);
00027     
00028     int get_new_car_id();
00029     
00030     int get_active_cars();
00031     
00032     AccCar* get_car(int id);
00033     
00034     AccCar* get_forward_car(int id);
00035     
00036     void DESTROY_ALL_CARS();
00037     
00038     bool simulating();
00039     
00040     int get_road_id();
00041     
00042     int get_road_clock();
00043         
00044     AccCar* get_last_car();
00045     
00046 private: 
00047     // for sharing intersections
00048     int road_id;
00049     
00050     // store our cars here we only need 5
00051     AccCar* car_table[MAX_CARS_ON_ROAD];
00052     
00053     // how many active cars we have 
00054     int active_cars;
00055     
00056     // each car gets its own bit 
00057     int active_car_bits;
00058     
00059     //
00060     int road_clock;
00061 };
00062 #endif