Accessing object parameters from another object actionscript3 - actionscript-3

Question

in the following video:
http://tv.adobe.com/watch/actionscript-11-with-doug-winnie/communicating-between-classes-episode-52/
he have two instances of object communicating together, both objects were created from Flash profession, and they simply "talk" by using the dot notation.
my program creates the objects dynamically, how can I communicate from one class to another from within the created instances? the creation may be from the main .as file or from within an object created from Main,
is this even possible?

Answer 1

If you can't keep object reference, you may need a third class to be the bridge between the objects.
Here is an example
public class NotifyMgr
{
private static var _instance:NotifyMgr = new NotifyMgr();
public static function getInstance():NotifyMgr
{
return _instance;
}
//send a message
public function sendMessage(msgType:String, data:*):void
{
var observers:Vector.<IObserver> = notifies[msgType] as Vector.<IObserver>;
if (observers == null)
{
return;
}
for each (var obj:IObserver in observers)
{
obj.notify(msgType, data);
}
}
private var notifies:Dictionary = new Dictionary();
//regiter a observer by msgType
public function register(msgType:String, obj:IObsever):void
{
if (notifies[msgType] == null)
{
notifies[msgType] = new Vector.<IObserver>();
}
var observers:Vector.<IObserver> = notifies[msgType] as Vector.<IObserver>;
if (obj != null && observers.indexOf(obj) == -1)
{
observers.push(obj);
}
}
public function unRegister(msgType:String, obj:IObserver):void
{
}
}
/**
*Your object should implement this interface
*/
public interface IObserver
{
function notify(msgType:String, data:*):void;
}
So you could create object A and b that both implement interface IObserver, and register A in NotifyMgr, call NotifyMgr.sendMessage in B,then A will know it.

Answer 2

In this example, Main is your Document Class, and Die is an extension of the Sprite Class. You can call its rollDie() method from within the Main Class because the access modifier is set to public
package{
import flash.display.Sprite;
import flash.events.MouseEvent;
public class Main extends Sprite{
public var die:Die;
public function Main()
{
//create a die
this.die = new Die();
addChild(die);
var button:MovieClip = new MovieClip();
addChild(button);
button.addEventListener(MouseEvent.CLICK, onButtonClick);
}
private function onButtonClick(e:MouseEvent):void
{
this.die.rollDie();
}
}
/**
* Die inherits from Sprite
*/
public class Die extends Sprite {
public function Die() {}
public function rollDie():void
{
var result:int = Math.ceil( Math.random()*6 );
trace("rolling die: " + result);
}
}
}