ships/obsolete/HomeworkCounter.java

   1 package edu.berkeley.fleet.interpreter.ships;
   2 import edu.berkeley.fleet.interpreter.*;
   3 import edu.berkeley.fleet.*;
   4
   5 import java.util.*;
   6 import java.io.*;
   7
   8 public class HomeworkCounter extends InterpreterShip {
   9
  10     private int count = -1;
  11
  12     TokenOutbox zero     = new TokenOutbox(this, "zero");
  13     TokenOutbox positive = new TokenOutbox(this, "positive");
  14     DataInbox    load     = new DataInbox(this, "load");
  15     TokenInbox  ask      = new TokenInbox(this, "ask");
  16
  17     public HomeworkCounter(Interpreter fleet, String name) {
  18         super(fleet, name);
  19     }
  20
  21     public void service() {
  22         if (!zero.readyForTokenFromShip()) return;
  23         if (!positive.readyForTokenFromShip()) return;
  24         if (load.dataReadyForShip()) {
  25             count = load.removeDataForShip();
  26             return;
  27         }
  28         if (ask.tokenReadyForShip()) {
  29             ask.removeTokenForShip();
  30             if (count > 0) {
  31                 count--;
  32                 positive.addTokenFromShip();
  33             } else if (count<=0) {
  34                 zero.addTokenFromShip();
  35             }
  36         }
  37     }
  38
  39 }