import greenfoot.*;

/**
 * This class defines a crab. Crabs live on the beach.
 */
public class Crab extends Actor
{
    public void act()
    {
       move(3);
       turnAtEdge();
       keyControl();
    }

    public void turnAtEdge(){
       if(isAtEdge()){
           turn(15);
    }
    }
    
    public void keyControl(){
       if(Greenfoot.isKeyDown("left")){
           turn(-15);
        }
       if(Greenfoot.isKeyDown("right")){
           turn(15);
        }
    }
}