package class5_1_Observer;

/**
 * Author: Josiah Yoder et al.
 * Class: SExxxx-xx
 * Date: 1/7/14 7:50 AM
 * Lesson: Week x, Day x
 */
public interface Observer {
    /**
     * Provides the position of the subject.
     * This method will be called once per simulated second.
     * @param positionMeters distance from start in meters
     */
    void update(double positionMeters);
}