/* 
 * 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.Actor;
import info.gridworld.actor.Bug;
import info.gridworld.actor.Rock;
import info.gridworld.grid.Grid;
import info.gridworld.grid.Location;

import java.awt.Color;
import java.util.ArrayList;

/**
 * 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 BlueBug extends Bug
{
    /**
     * Moves to the next location of the square.
     */
    public void act()
    {
	randomTurn();
	if (!canMove()) {
	    return;
	}
	move();

	Location loc = getLocation();
	Grid<Actor> grid = getGrid();
	ArrayList<Actor> neighbors = grid.getNeighbors(loc);

	for (int i=0; i<neighbors.size(); i++) {
	    Actor actor = neighbors.get(i);
	    System.out.println(actor);
	}

	for (Actor actor: neighbors) {
	    if (actor instanceof Rock) {
		actor.setColor(Color.blue);
	    }
	}
    }

    /*
     * Turns left or right 45 degrees at random.
     */
    public void randomTurn() {
	if (Math.random() < 0.5) {
	    turn(-45);
	} else {
	    turn(45);
	}
    }

    /*
     * Turns the given number of degrees.
     */
    public void turn(int degrees) {
	setDirection(getDirection() + degrees);
    }
}