import java.awt.*;

/**
 * Write a description of class Box here.
 *
 * @author (your name)
 * @version (a version number or a date)
 */
public class Box
{
    // instance variables - replace the example below with your own
    
    private int x,y,width, direction, leftLimit, rightLimit ;
    private boolean falling;
    
    

    /**
     * Constructor for objects of class Box
     */
    public Box(int x, int y, int width)
    {
        // initialise instance variables
        this.x =x;
        this.y =y;
        direction = 1;
        this.width = width;
        leftLimit = x;
        rightLimit =  x+6*width;
        falling=false;
    }

    public void draw(Graphics g)
    {
        // put your code here
        g.setColor(Color.BLUE.darker());
        g.fillRect(x,y, width,width);
    }
    
    public void move()
    {
        if(direction ==0)
            return;
        int next = 20*direction; 
        
            
        if ( x+next > rightLimit  )
        {
            direction = -1;
        }
        if ( x+next < leftLimit  )
        {
            direction = 1;
        }
        
        if (falling){
            y += next;
        }else{
            x += next;
        }
    }
    public void stop(){
        direction =0;
        falling=true;
    }
}