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

/**
 * Write a description of class Spike here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Spike extends Actor
{
    int speed;
    public Spike(int pSpeed)
    {
        speed=pSpeed;
    }

    /**
     * Act - do whatever the Spike wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act()
    {
        // Add your action code here.
        this.setLocation(this.getX(), this.getY()+speed);
        if(this.isTouching(Player.class))
        {
            Greenfoot.setWorld(new GameOverWorld());
        }
    }
}