Highscore

import greenfoot.*;  
 
public class MyWorld extends World // focuses on displaying of the score 
{ 
    static Actor scoreDisplay;        // all static variable because they rest once the game is finished 
    static Actor highScoreDisplay;
    public static int score;
    static int highScore;  
    
      
    public MyWorld() // screen size and sets variable values, 
    {    
         
        super(600, 400, 1);   
         
        scoreDisplay = new SimpleActor();
        highScoreDisplay = new SimpleActor();
        score = -1;
        highScore = -1;
        adjustScore(1); 
         
         
         
         
          
           
          
    }    
    

    
    public MyWorld(int w, int h, int c)
    {
        super(w, h, c);
    }
       
     
    static void adjustScore(int trial) // score resseting and high score being saved for every round and being replaced if score is largr than high score 
    {
        score += trial;
        GreenfootImage img = new GreenfootImage("Score: "+score, 24, Color.RED, new Color(0, 0, 0, 0));
        scoreDisplay.setImage(img);
        if (score > highScore)
        {
            highScore = score;
            img = new GreenfootImage("High score: "+highScore, 24, Color.RED, new Color(0, 0, 0, 0));
            highScoreDisplay.setImage(img);
        }
    }
     
    public void act() // getting from the MeteorsWorld() method in the sub class 
    {  
        Greenfoot.setWorld(new MeteorsWorld()); 
        
        
         
    }   
    
   
    
    
}

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


public class MeteorsWorld extends MyWorld // location of starting objects , meteor location and spawning, and qualifications of game over  
{

    
    public MeteorsWorld() // size of screen, methods within the class
    {    
        
        super(600, 400, 1);  
        prepare(); 
        adjustScore(-score);
        
        
        
        
    } 
    public void addMeteor() // places a meteor all the way to left - 1 and at a random y-value 
    { 
     addObject(new Meteors(),getWidth()-1,Greenfoot.getRandomNumber(getHeight()));
    }
    private void prepare() // Location of rocket and where score and high score are located. 
    {  
        Rocket Rocket = new Rocket(); 
        addObject(Rocket,100,200); 
        Rocket.setLocation(70,200);  
        addObject(scoreDisplay,55,380); 
        addObject(highScoreDisplay,525,25);
         
         
    } 
    public void Switchscreen() // defining when the game is over 
 { 
     boolean noRockets = getObjects(Rocket.class).isEmpty(); 
     if (noRockets == true) 
     { 
        Greenfoot.setWorld(new Playagain()); 
  
  
   } 
}   
public void act() // Switchscreen() method and the frequency in which a meteor is spawned 
{ 
    Switchscreen(); 
        if(Greenfoot.getRandomNumber(20)<1) // Greenfoot.getRandomNumber(20) must be zero to spawn 
       {
       addMeteor();  
       }  
    }












}