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- /*
- * AP(r) Computer Science GridWorld Case Study:
- * Copyright(c) 2005-2006 Cay S. Horstmann (http://horstmann.com)
- *
- * This code is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * @author Cay Horstmann
- * @author Chris Nevison
- * @author Barbara Cloud Wells
- */
- import info.gridworld.actor.Bug;
- /**
- * A <code>BoxBug</code> traces out a square "box" of a given size. <br />
- * The implementation of this class is testable on the AP CS A and AB exams.
- */
- public class BoxBug extends Bug
- {
- private int steps;
- private int sideLength;
- /**
- * Constructs a box bug that traces a square of a given side length
- * @param length the side length
- */
- public BoxBug(int length)
- {
- steps = 0;
- sideLength = length;
- }
- /**
- * Moves to the next location of the square.
- */
- public void act()
- {
- if (steps < sideLength && canMove())
- {
- move();
- steps++;
- }
- else
- {
- turn();
- turn();
- steps = 0;
- }
- }
- }
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