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

public class Crab extends Actor
{
    /**
     * Act - do whatever the Crab wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act() 
    {
        moveAndTurn();
        eat();
    }    
    public void moveAndTurn()
    {
        move(4);
        
        if (Greenfoot.isKeyDown("left"))
        {
            turn(-3);
        }
        if (Greenfoot.isKeyDown("right"))
        {
            turn(3);
        }
    }  
    
    public void eat()
    {
        Actor worm;
        worm = getOneObjectAtOffset(0, 0, Worm.class);
        if (worm != null);
        {
            World world;
            world = getWorld();
            world.removeObject(worm);
            Greenfoot.playSound("eating.wav");
        }
    }    
}

    public void eat()
    {
        Actor crab;
        crab = getOneObjectAtOffset(0, 0, Crab.class);
        if (crab != null);
        {
            World world;
            world = getWorld();
            world.removeObject(crab);
            Greenfoot.playSound("eating.wav");
            
        }
    }