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

/**
 * Write a description of class Villager here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Villager extends Pedestrian
{
    
    public Villager(int dir)
    {
        super(dir);
        GreenfootImage image = getImage();
        image.scale(image.getWidth() - 340, image.getHeight() - 340);
        setImage(image);
    }
    /**
     * Act - do whatever the Villager wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act()
    {
        move();
    }
}

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

/**
 * A Pedestrian that tries to walk across the street
 */
public abstract class Pedestrian extends SuperSmoothMover
{
    protected double speed;
    protected double maxSpeed;
    protected int direction; // direction is always -1 or 1, for moving down or up, respectively
    protected boolean awake;
    public Pedestrian()
    {
        this(1);
    }
    
    public Pedestrian(int direction) {
        // choose a random speed
        maxSpeed = Math.random() * 2 + 1;
        speed = maxSpeed;
        // start as awake 
        awake = true;
        this.direction = direction;
    }

    /**
     * Act - do whatever the Pedestrian wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void move()
    {
        // If there is a v
        if (awake){
            if (getOneObjectAtOffset(0, (int)(direction * getImage().getHeight()/2 + (int)(direction * speed)), Vehicle.class) == null){
                //setLocation (getX(), getY() + (speed*direction));
                setLocation(getPreciseX(), getPreciseY()+speed*direction);
            }
            if (direction == -1 && getY() < 100){
                getWorld().removeObject(this);
            } else if (direction == 1 && getY() > 550){
                getWorld().removeObject(this);
            }
        }
    }
    
    /**
     * Method to cause this Pedestrian to become knocked down - stop moving, turn onto side
     */
    public void knockDown () {
        speed = 0;
        setRotation (90);
        awake = false;
    }
    
    public void rooted ()
    {
        speed = maxSpeed/2;
    }
    
    /**
     * Method to allow a downed Pedestrian to be healed
     */
    public void healMe () {
        speed = maxSpeed;
        setRotation (0);
        awake = true;
    }
    
    public boolean isAwake () {
        return awake;
    }
}

a description of class RootedCorpse here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class RootedCorpse extends Vehicle
{
    /**
     * Act - do whatever the RootedCorpse wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public RootedCorpse(VehicleSpawner origin) {
        super(origin); // call the superclass' constructor
        GreenfootImage image = getImage();
        image.scale(image.getWidth() - 70, image.getHeight() - 120);
        setImage(image);
        maxSpeed = 1.5 + ((Math.random() * 30)/5);
        speed = maxSpeed;
        yOffset = 0;
    }

    public void act()
    {
        drive(); 
        checkHitPedestrian();
        if (checkEdge()){
            getWorld().removeObject(this);
        }
    }
    
    /**
     * When a Car hit's a Pedestrian, it should knock it over
     */
    public boolean checkHitPedestrian () {
        Pedestrian p = (Pedestrian)getOneObjectAtOffset((int)speed + getImage().getWidth()/2, 0, Pedestrian.class);
        if (p != null){
            p.rooted();
            return true;
        }
        return false;
    }
}