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

public class CrabWorld extends World
{
    /**
     * Create the crab world (the beach). Our world has a size 
     * of 560x560 cells, where every cell is just 1 pixel.
     */
    public CrabWorld() {
       super(560, 560, 1);
       Crab c=new Crab();
       addObject(c,100,100);
       for(int i=0;i<3;i++) {
           Lobster l=new Lobster();
           addObject(l,200,200+i*50);
       }
       for(int i=0;i<10;i++) {
           Worm w=new Worm();
           addObject(w,50+i*50,50);
       }
       for(int i=0;i<10;i++) {
           Worm w=new Worm();
           addObject(w,50,50+i*50);
       }
       for(int i=0;i<10;i++) {
           Worm w=new Worm();
           addObject(w,50+i*50,500-i*50);
       }
       GreenfootImage bg = getBackground();
       bg.setFont(new Font(true, false, 40));
       bg.setColor(Color.WHITE);
       bg.drawString("小螃蟹hkl！",170,270);
    }
}