antpatch.java

一个TSP问题的图形演示程序

/*
 *  This code is from the book:
 *
 *    Winder, R and Roberts, G (2000) Developing Java
 *    Software, second edition, John Wiley & Sons.
 *
 *  It is copyright (c) 2000 Russel Winder and Graham Roberts.
 */

import SimFrameWork.Patch ;
import SimFrameWork.RandomGen ;
/**
 *  Subclass of Patch specialising patches for the ant simulation.
 *
 *  @version 2.0 March 1999
 *  @author Graham Roberts
 */
class AntPatch extends Patch {
  /**
   *  Antpatches don't do much except use the patch value field as a
   *  count of the number of wood chips on the patch. Constructor
   *  initializes the count randomly.
   */
  public AntPatch() {
    int n = RandomGen.getNext(100) ;
    if (n > 90) {
      patchValue = 1 ;
    } else {
      patchValue = 0 ;
    }
  }
  /**
   *  Not required for this simulation but must be overridden to
   *  make this class concrete.
   */
  public void update() {}
}