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9.2

how do I type cast 'root' so that it is available from every class I create that extends a MovieClip?

Asked by jenie_penny13 in ActionScript, Adobe Flash

Tags: actionscript 3, flash, as3

I am having issues wrapping my ahead around AS3. For the kind of project I am working on I need to reference MCs that are on the main stage/timeline. I have an MC called site_holder on the main stage with the name 'site_holder' set in the properties inspector. I have a class called "MenuActions" that I want to have generate a menu within an MC in the site_holder. For some reason I can't get the class to recognize the root even with casting it as MovieClip(root). The weird thing is I have another class constructed and called almost identically and it can find the root location. I've researched all over the web all day and can't see to find an answer of why it won't work in this, or a couple other classes that are extended from MovieClips.
I am getting 'TypeError: Error #1009: Cannot access a property or method of a null object reference.' where I call the MovieClip(root).site_holder.x 
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in main fla on frame: 
import MenuActions;
var menuMC:MenuActions=new MenuActions;
menuButtons.addChild(menuMC);
 
 
 
 
 
MenuActions.as
-----------------------------------
package {
	import flash.events.*;
	import flash.text.TextField;
	import flash.net.*;
	import flash.display.*;
	import flash.utils.getDefinitionByName;
	import flash.text.TextField;
	import flash.text.TextFormat;
	import flash.text.TextFieldAutoSize;
	import flash.events.MouseEvent;
	import flash.text.TextFormatAlign;
	import gs.*;
	import gs.easing.*;
 
 
	public class MenuActions extends MovieClip {
 
		public static var selectedButton:MenuButton;
		public static var i:Number=0;
		public static var totalMenuWidth:Number=0;
		public static var lastMenuButtonWidth:Number=0;
		public static var menuButtonSpacing:Number=10;
 
 
 
 
		public function MenuActions():void {
			//attach the menu button on the menu path
			for (i = 0; i < MainMenu.buttonCount; i++) {
 
				//create menu button
				var menuItem:MenuButton = new MenuButton();
 
				//set menu label text and position
				menuItem.buttonLabel.buttonLabelText.autoSize=TextFieldAutoSize.LEFT;
				menuItem.buttonLabel.buttonLabelText.text=MainMenu.menuButtons[i].Name;
 
				lastMenuButtonWidth=menuItem.buttonLabel.buttonLabelText.width;
				menuItem.x=totalMenuWidth;
				totalMenuWidth+=lastMenuButtonWidth+menuButtonSpacing;
				menuItem.rolloverElement.width=lastMenuButtonWidth;
 
				//set the menu button colors
				TweenLite.to(menuItem.buttonLabel, 0, {tint:GlobalVars.menuButtonColor});
				TweenLite.to(menuItem.rolloverElement, 0, {tint:GlobalVars.menuButtonRolloverColor});
 
				addChild(menuItem);
 
				//menuItem.addEventListener(MouseEvent.ROLL_OVER,playOver);
				//menuItem.addEventListener(MouseEvent.ROLL_OUT,playOut);
				//menuItem.addEventListener(MouseEvent.CLICK,goClick);
			}
			positionMenu();
 
		}
 
		function positionMenu():void {
			//set menu position
			MovieClip(root).site_holder.x = -200; 
		}
 
	}
}
 
---------------------------------------------------
[+][-]10/15/09 03:12 PM, ID: 25585432Accepted Solution

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About this solution

Zones: ActionScript, Adobe Flash
Tags: actionscript 3, flash, as3
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Solution Provided By: systemride
Participating Experts: 1
Solution Grade: A
 
[+][-]10/15/09 03:30 PM, ID: 25585549Author Comment

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