/**
 * Creates and adds a new actor of the specified class into the world at the given coordinates.
 *
 * @param cls the class from which the new actor is created 
 * @param xLoc the x-coordinate at which to place the object into the world
 * @param yLoc the y-coordinate at which to place the object into the world
 */
private Actor addActor(Class cls, int xLoc, int yLoc)
{
    Actor actor=null;
    try { actor=(Actor)cls.newInstance(); } catch(Exception e) { }
    if (actor!=null) getWorld().addObject(actor, xLoc, yLoc);
    return actor;
}

// to spawn an object of the same type as Actor 'this', use:
addActor(this.getClass(), x, y);
// if you need a reference to the newly created actor, use:
Actor actor = addActor(this.getClass(), x, y);
// if your class is Zombie and you need the new instance type cast to that:
Zombie zombie = (Zombie)addActor(Zombie.class, x, y);

Zombie zombie = new Zombie();
getWorld().addObject(zombie, x, y);

BufferedReader br = new BufferedReader(new FileReader("levels/" + levelName + ".txt"));
            String line;
    
            while((line = br.readLine()) != null)
            {
                List<String> items = Arrays.asList(line.split("\\s*,\\s*"));
                
                int item0 = Integer.parseInt(items.get(0));
                int item1 = Integer.parseInt(items.get(1));
                int item2 = Integer.parseInt(items.get(2));
                int item3 = Integer.parseInt(items.get(3));
                
                Actor actor = (Actor) Object.objectList[item0];
                
                getWorld().addObject(actor, item1, item2);
            }

public void addedToWorld(World world)
{
    BufferedReader br = new BufferedReader(new FileReader("levels/"+levelName+".txt"));
    while ((line = br.readLine()) != null)
    {
        List<String> items = Arrays.asList(line.split("\\s*, \\s*"));
        int item0 = Integer.parseInt(items.get(0));
        int item1 = Integer.parseInt(items.get(1));
        int item2 = Integer.parseInt(items.get(2));
        int item3 = Integer.parseInt(items.get(3));
        Actor actor = (Actor)Object.objectList[item0];
        world.addObject(actor,, item1, item2);
    }
    br.close;
}