/** This class acts as an intermediary between the Rover and the
    Prodigy, and visa-versa.  The Prodigy rarely interacts with a
    Rover on its own; it has these records to track the pose, status,
    and role of each Rover. */
public class Record {
  
  private Rover rover;    // The rover we're tracking
  private Pose pose;      // The rover's pose
  private int targetID;   // The ID of our 'mate'
  private static int port = 6665;

  /** Creates a rover and a pose object, then starts our Rover thread. */
  public Record (Prodigy prodigy, int id) {
    rover = new Rover(prodigy, id, port);
    port++;
    pose = new Pose(0,0,(short)0);
    new Thread(rover).start();
  }

  /** returns the role of the target rover. */
  public int getRole () { return rover.getRole(); }

  /** sets the role of the target rover. */
    public void setRole (int newRole) { rover.setRole(newRole); }

  /** Sets the role of the target rover to OBSERVER */
    public void setObserver (int targetID) {
	setRole(Roles.OBSERVER);
	this.targetID = targetID;
    }

  /** gets the target ID, if this is an Observer. */
  public int getTargetID () { return targetID; }

  /** Returns a pointer to the target Rover. */
  public Rover getRover () { return rover; }

  /** Returns the Pose as it is now. */
  public synchronized Pose getPose () { 
    return pose; 
  }

  /** Changes the current pose to the parameter.  Used for every update.*/
  public void changePose (Pose newPose) {
    pose = newPose;
  }

  /** Returns a string that represents this record, rover, & pose. */
  public String toString() {
    return "ID: "+rover.getID()+"\t"+pose;
  }

}