/* Direction.java */


/** This class implements compass directions.
 */
public class Direction
{
  // constants
  public static final int NORTH = 0;
  public static final int EAST = 1;
  public static final int WEST = 2;
  public static final int SOUTH = 3;
  public static final int MAXDIR = 4;

  /**
   *  Assumes:  dir == one of { NORTH, EAST, WEST, SOUTH }
   *  Returns a direction based on the following table:
   *
   *            dir       returns
   *            ---       -------
   *            NORTH     EAST
   *            EAST      WEST
   *            WEST      SOUTH
   *            SOUTH     MAXDIR
   */
  public static int nextDir(int dir) {
    return dir+1;
  }
}