piano tiles

/*
 * File: Adventure.java
 * Names: <fill in>
 * Section leader who is grading the assignment: <fill in>
 * -------------------------------------------------------
 * This program plays the Adventure game from Assignment #6.
 */

import acm.graphics.GImage;
import acm.graphics.GLabel;
import acm.graphics.GObject;
import acm.io.*;
import acm.program.*;
import acm.util.*;

import java.awt.event.MouseEvent;
import java.io.*;
import java.util.*;
import acm.graphics.GRect;

/**
 * This class is the main program class for the Adventure game.
 * In the final version, <code>Adventure</code> should extend
 * <code>ConsoleProgram</code> directly.
 */

public class Adventure extends GraphicsProgram{ //AdventureMagicSuperclass {

/**
 * Runs the Adventure program.
 */
	public void run() {
		//super.run();  // Replace with your code
		for(int i=0; i<4; i++){
			for(int j=0; j<4; j++){
				boolean flag=rgen.nextBoolean();
				tile = new GRect(getWidth()/4,getHeight()/4);
					tile.setFilled(flag);
					add(tile,i*getWidth()/4,j*getHeight()/4*movefactor);
			}
		}
		addMouseListeners();
	}
	
public void mouseClicked(MouseEvent e){
	GObject obj = getElementAt(e.getX(),e.getY());
	if(((GRect) obj).isFilled()){
		((GRect) obj).setFilled(false);
		x = obj.getY() + getHeight()/4;
		y += getHeight()/4;
		if(x>y){
			removeAll();
			GLabel lost1 = new GLabel("Victory! ",getWidth()/2-12, getHeight()/2);
			add(lost1);
		}
		movefactor++;
	}
	else {
		removeAll();
		GLabel lost = new GLabel("Victory! ",getWidth()/2-12, getHeight()/2);
		add(lost);
	}
}

// Add your own private methods and instance variables here
	private RandomGenerator rgen = RandomGenerator.getInstance();
	private double x=0;
	private double y=0;
	private double movefactor=1;
	private GRect tile;
	private int counter;
}