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 ZBug extends Bug
{
    private int steps;
    private int sideLength;
    public int moo;

    /**
     * Constructs a box bug that traces a square of a given side length
     * @param length the side length
     */
    public ZBug(int length)
    {
        steps = 0;
        moo = 0;
        sideLength = length;
        turn();
        turn();
    }

    /**
     * Moves to the next location of the square.
     */
    public void act()
    {
        if (moo<3 && steps < sideLength && canMove())
        {
            move();
            steps++;
        }
        else if(moo == 0)
        {
            turn();
            turn();
            turn();
            moo++;
            steps = 0;
        }
        else if (moo ==1)
        {
            setDirection(90);
            moo++;
            steps = 0;
        }
    }
}