title: Need help to do a array to Snake game in Greenfoot
body: <p>Got a new task in School to code the Snake Game from scratch and need to use a array to add a new Snake bodypart when the Snakehead eats food and at the beginning the Snake need to have 1 head and 2 bodyparts..and I have no idea how to do this..can someone out there help me on right direction..how to start? Here is my code so far:</p>
  
  <p>The world:</p>
  
  <pre><code>public class WorldofSnake extends World
  {
  
      /**
       * Constructor for objects of class WorldofSnake.
       * 
       */
      public WorldofSnake()
      {    
  
          super(600, 400, 1); 
  
          addObject ( new Snake(),70 , 50);
          addObject ( new Food(), Greenfoot.getRandomNumber(600), Greenfoot.getRandomNumber(400));
      }
  }
  </code></pre>
  
  <p>The class Snake:</p>
  
  <pre><code>import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
  
  /**
   * Write a description of class Snake here.
   * 
   * @author (your name) 
   * @version (a version number or a date)
   */
  public class Snake extends Actor
  {
  
  private int foodEaten;
  
  
  
  public Snake()
  {
       foodEaten = 0;
  }
  
  
  public void act() 
  {
         checkKeypress();
         lookForFood();
      }
  
      public void checkKeypress()
      { if(Greenfoot.isKeyDown("left")){
        setLocation(getX() - 2,(getY()));
      }
        if(Greenfoot.isKeyDown("right")){
        setLocation(getX() + 2,(getY()));
      }
        if(Greenfoot.isKeyDown("up")){
        setLocation(getX() ,(getY() - 2));  
      }
        if(Greenfoot.isKeyDown("down")){
        setLocation(getX() ,(getY() + 2));  
  }
  
  }
  public void lookForFood()
  {
    Actor a = getOneIntersectingObject(Food.class);
    if (a !=null)
  {
    getWorld().removeObject(a);
    getWorld().addObject ( new Food(), Greenfoot.getRandomNumber(600), Greenfoot.getRandomNumber(400));
    foodEaten = foodEaten + 1;
  }
  
  }
  }
  </code></pre>