pathfinder

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

/**
 * Write a description of class Zombie here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Zombie extends Actor
{
    private int x;
    private int y;
    /**
     * Act - do whatever the Zombie wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act() 
    {
        follow();
        checkForWall();
        stopAtWalls();
        die();
    }    
    public void checkForWalls()
    {
        if (getOneIntersectingObject(Wall1.class) != null || getOneIntersectingObject(Wall2.class) != null)
        {
            move(-2);
            rotate(90);
            move(2);
        }
    }
    public void follow()
    {
        Actor character = (Character) getWorld().getObjects(Character.class).get(0);
        turnTowards(character.getX(), character.getY());
        move(2);
    }
    public void die()
    {
        Actor bullet = getOneIntersectingObject(Bullet.class);
        if (getOneIntersectingObject(Bullet.class) != null)
        {
            getWorld().removeObject(bullet);
            ZombieWorld.zombiesKilled++;
            Character.score = Character.score + 50;
            getWorld().removeObject(this);
        }
    }
    public void stopAtWalls()
    {
        if (getOneIntersectingObject(Wall1.class) != null || getOneIntersectingObject(Wall2.class) != null
        || getOneIntersectingObject(Door1.class) != null || getOneIntersectingObject(Door2.class) != null
        || getOneIntersectingObject(Door3.class) != null || getOneIntersectingObject(Door4.class) != null
        || getOneIntersectingObject(Zombie.class) != null)
        {
            setLocation(x,y);
        }
        else
        {
            x = getX();
            y = getY();
        }
    }
}

public void checkForWalls()
    {
        if (getOneIntersectingObject(Wall1.class) != null || getOneIntersectingObject(Wall2.class) != null)
        {
            move(-2);
            rotate(90);
            move(2);
        }
    }