Ping Pong Game

import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)

/**
 * Write a description of class MyWorld here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class MyWorld extends World
{

    /**
     * Constructor for objects of class MyWorld.
     * 
     */
    public MyWorld()
    {    
        // Create a new world with 600x400 cells with a cell size of 1x1 pixels.
        super(600, 400, 1); 
        // theCounter = new Score();
        // addObject(theCounter, 175,48);
        prepare();
    }

    /**
     * Prepare the world for the start of the program.
     * That is: create the initial objects and add them to the world.
     */
    private void prepare()
    {
        Paddle1 bar1 = new Paddle1();
        addObject(bar1,550,200);
        Ball ball = new Ball();
        addObject(ball,300,200);
        Paddle2 bar2 = new Paddle2();
        addObject(bar2,50,200);
        Scoreboard scoreboard = new Scoreboard("Player One: 0", "Player Two: 0" );

        addObject(scoreboard, 200, 0);
    }
}

import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)

/**
 * Write a description of class Ball here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Ball extends Actor
{
    public Ball()
    {
        GreenfootImage img = new GreenfootImage( 15,15);
        img.setColor(Color.RED);
        img.fill();
        setImage(img);
    }
    private int xSpeed = 5, ySpeed = 7;
    
    public int xVector = (Greenfoot.getRandomNumber(13)-6);
    public int yVector = (Greenfoot.getRandomNumber(13)-6);
    public void act() 
    {   
        movement();

        Actor paddle_1 = getOneIntersectingObject(Paddle1.class);
        if (paddle_1!=null)
        { 
            xSpeed = -xSpeed;
        }
        Actor paddle_2 = getOneIntersectingObject(Paddle2.class);
        if (paddle_2!=null)
        {  
            xSpeed = -xSpeed;
        }
        
        
        
    } 
    
    public void movement()
    {
        setLocation(getX() +  xSpeed, getY() + ySpeed);
        if(getY()<5 || getY() > getWorld().getHeight()-5)
        {
            ySpeed = -ySpeed;
        }
    }
    
    
}

import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)

/**
 * Write a description of class Bar1 here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Paddle1 extends Paddles
{
    //Creates the paddle and fills it in
    public Paddle1()
    {
        GreenfootImage img = new GreenfootImage( 20,100);
        img.setColor(Color.RED);
        img.fill();
        setImage(img);
    }

    /**
     * Act - do whatever the Bar1 wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act() 
    {
        // Add your action code here.
        if (Greenfoot.isKeyDown("up"))
        {   
            setLocation(getX(), getY()-5);
        }    
        if (Greenfoot.isKeyDown("down"))
        {   
            setLocation(getX(), getY()+5);
        }
    }    
}

import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)

/**
 * Write a description of class Score here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Score extends Actor
{
    private int totalCount = 0;
    public void bumpCount(int amount)
    {
        totalCount += amount;
        setImage(new GreenfootImage("" + totalCount));
        
    }
    
    /**
     * Act - do whatever the Score wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act() 
    {
        // Add your action code here.
    }    
}

import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
// import java.awt.Color;

/**
 * Write a description of class Scoreboard here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Scoreboard extends Actor
{
    public Scoreboard( String Player1, String Player2)
    {
        //Sets the borders for where he txt will be
        GreenfootImage img = new GreenfootImage(500,300);
        img.setColor(Color.RED);
        
        Font font = new Font("Helvetica", true, false, 20);
        img.drawString(Player1,150,200);
        img.drawString(Player2,425,200);
        setImage(img);
        img.setFont(font);
    }
    
    public void setText(String Player1, String Player2)
    {
        GreenfootImage img = getImage();
        img.clear();
        img.drawString(Player1,150,35);
        img.drawString(Player2,500,35);
    }
}

private Score score1 = new Score();

private Score score2 = new Score();