// intersection.h   for traffic simulation

#ifndef INTERSECTION_H_
#define INTERSECTION_H_

#include "simulation.h"
#include "vehicle.h"
#include "lane.h"

class intersection
{
  public:
    intersection(float Ax_location,
		 float Ay_location,
		 intersection * Aintersection_list);
    void set_signal( intersection * Aintersection_list,
                     signal_state Anorth_south,
                     signal_state Aeast_west);
    void operate(intersection * Aintersection_list);
    void creator( float Alength,
                  float Aweight,
                  float Aaccel,
                  float Adecell,
                  direction Amoving);
    void connect_from( intersection * Aintersection_list);
    intersection * next(void);
    void draw(intersection * Aintersection_list);
  private:
    float x_location;
    float y_location;
    intersection * next_intersection;

    lane * lane_north; // fed by
    lane * lane_from_south;

    lane * lane_east;  // fed by
    lane * lane_from_west;

    lane * lane_south; // fed by
    lane * lane_from_north;

    lane * lane_west;  // fed by
    lane * lane_from_east;

    signal_state north_south;
    signal_state east_west;

}; // end intersection.h

#endif  // INTERSECTION_H_