In flash, you give the stage a document class (Engine). I'm making the assumption that it creates an instance of this somewhere, but my question is, how the hell do you access this? I have found many places saying to create another instance, this is not what I want
View 8 RepliesIs there a way to get an instance reference to the document class to call a method of it from the stage's timeline?I see that here's a possible solution: using a singletonOther solution I though of is using stage.getChildAt( 0 ) but it's not very nice.Is there an 'official' instance reference? because the document class is obviously instantiated at startup, but is that instance accessible in any way without having to use a custom solution like the ones mentioned?
View 1 RepliesI have a really peculiar problem that relates to the old question of how to best access the instance of the document class from a different class. I usually add a 'this' as parameter when I create an instance of another class inside the document class. Then I save this 'this' in a class property of the type 'Object'. It usually works just fine but lately I have encountered a really bizzarr error.
When my movie first starts I have to load 2 xml-Files. I do that in another class - that calls upon the document class instance when it is finished. I use 4 methods for that, each calling the other, when it is finished.
(like one doing loader.load(urlRequest),
then loader.addEventListener
(Event.Complete, nexthandler) and so on
Now, when I call back to my document class from the last of these 4 methods it works just fine. But when I try skipping the first two methods (since I now need only one xml-File) - my try/catch-statement suddenly complains: TypeError: Error #1010! Like it needed more time to establish the instance of the document class or something similar strange.
I have a main document class with another class instanciated (mouse follower.as) within it. I want the mouse follower class to access a stage instance. How is this done?
View 1 RepliesWhat I'm looking for is a way to reference the document class instance, to be able to access functions and variables that other classes need. I'm currently doing it with this little piece of code I found on some blog or forum.
Code: Select all// This is in the document class
private static var _instance:DocClass; // I have tried setting this to public and accessing it directly as well
public static function get instance():DocClass { return _instance; }
[code]....
This seems to work as it should in Flash CS4, but when I try to run the same code in CS5 I get the following error message:
Code: Select allC:UsersImpenDocumentsMy DropboxFlash Project\_SPELTankGameMenuShop.as, Line 238 1195: Attempted access of inaccessible method globalFunction through a reference with static type DocClass.
how to swap the sprite instance for a movieclip via the document class.
this a boid example from soulwire, and works great but i want to use a library clip instead of the vector sprite - for arguments sake - the library clip would be "boid"...
[Code].....
but am not able to work out what i need to add/edit...
I have to admit I pretty much ran away from Flash when AS2 came along and only used it for animation purposes over the last 5 years.So I'm having a major crash course in AS3 in Flash CS3 and I'm not enjoying it one bit. I'm getting maybe 10mins of finished work per hour as I try to figure out the limits and rules of AS3. Quite often it seems that AS3 simply can't do what I want it to. Anyway: Characterchecks.as is the main class and it loads a bunch of XML into four arrays. The file starts like this:[code]If I trace the value of, say, cc._Categories from the main FLA, it's empty. I'm guessing that the next line of AS in the main FLA doesn't wait for the previously called function to complete? (This may tie in to my next problem)My next step is that I want to display various things based on the data in the array. I have another class, Display.as which will hold all the functions to create the items on display. I thought it would be best for these to be a separate object. I wonder if I'm right?
So I declare an instance of Characterchecks in the main FLA and call it cc, and then run the functions to populate the arrays... Now I create an instance of Display and call it cd. How can I get functions in cd to see the values of the variables in cc? And if the main timeline can't tell that the functions aren't finished filling the arrays, how is cd supposed to know?I might be asking dumb questions, or maybe I'm doing things ***-backwards, I don't know. I'd appreciate any help, I really would. This whole thing has me at the end of my tether... being the most technically advanced person in my circle of co-workers and web design friends means I have no-one to explain why things need to be done a certain way or what the best way is.
So I have one movie clip on stage rect_mc and document class Main.as I can import movie clip to document class with [code]...
but is there any way to manipulate rect_mc without craating new instance and attaching it to a stage with addChild()
Got two classes "Engine.as" and "Player.as". Engine.as is the document class that is calling Player.as.
The point is to have Player.as create a movieclip on the stage, but it seems it cannot access the library or something. Because when the player class is at the createHero() method it gives me the "error 1009 cannot access a property or method of a null object reference"
Engine class:
Code:
package test{
import flash.display.*;
import flash.events.*;
[Code]....
It seems simple, but it doesn't seem to be working I have 2 as3 files as classes "mainclass.as3 (this is the document class)" and GamePlay.as3
the GamePlay class works flawlessly on it's own, but when i try to create the var to access it ... var gp:GamePlay=new GamePlay(); ... i get the following error.
I have looked at tutorial etc, but i cant get it to work i am currently getting the following error.[code]...
It used to be simple to access an object you put on the stage like a mc or dynamic text field by simply using _root.instanceName ect. Now I see references to making references to the Stage and such like:
private var stage:Stage;
stage = stageRef;
and I am still confused.
What I have going on is, I have placed a movieclip on the stage in Flash and gave it an instance name of Cell_mc.I have a cusom class that extends MovieClip with the following imports
import flash.display.MovieClip;
import flash.events.Event;
import flash.events.EventDispatcher;
[code]....
This Class is tied to a set of MovieClips in my Library.
I have a listener: this.addEventListener(MouseEvent.MOUSE_DOWN,pickUp);
And a function:
private function pickUp(event:MouseEvent):void
{
this.startDrag();
[code]....
I get the following error whenever I try to access an object I placed on the stage from anywhere other than the document class:
1120: Access of undefined property Cell_mc.
How do I access the cell_mc that is already on the stage from this non-document class?
if i want from a document class to access some variables in other classes (which are imported into that document class) does these variables need to be public to access them or they can be something else?
View 9 RepliesHow do I access the timeline from the document class? I tried: trace(this.parent as MovieClip)
but I got a null object.
I was wondering if it was possible to access the document class from within a movieclip.
I am creating a slideshow type project, and I'm using a document class to switch between the frames using the arrow keys. However, in one of the "slideshow screen" movieclips, I want to have it stop, and then play another part when the arrow key is pressed again.
I tried to access my nextScreenToPlay method within the document class, but whenever I try to do it within a movie clip, I get this error: Call to a possibly undefined method nextScreenToPlay through a reference with static type class.
If I do a trace(Main), within a movieclip, it shows the class.
trace(MovieClip(root).TRACE);
so at pesent I am using this to try and access
Code:
public var TRACE:String
in the the document class.
however I am getting this
"1180: Call to a possibly undefined method addFrameScript.�"
my document class extends to Sprite as I have some stage resizing that occurs on Initialise
Code:
StaticInheritance extends Sprite
Im sure it has something to do with the way the document class extends.
I tend to give my Document class all public access modifiers. Would there be any reasons not to do this?
View 3 RepliesJust tried using cs5 on my new macbook and I have a tlf text object on the stage with an instance name of mText. I tried to access (mText.text = "test") it like this and got a null object reference. I tried to trace the stage from my document class and it was null when the tlftextbox was on the stage but i could trace stage correctly when I deleted the textbox. [code]...
View 2 RepliesFor the example, there's a single FLA with a document class "main.as." In the public class main.as package, there is a public variable: "var example:String='example';." Inside of the FLA, there is one movie clip in the library and it is assigned a custom base class "sub.as." The movie clip is then placed on the first frame of the stage so its constructor is run at runtime and reads the value of example.
What is the proper way to get the value of "example" in the root document class? Using "root.example" in the sub.as class to target the document class returns an error and when I trace "root", I get "null." Main.example naturally throws an error because that's looking at the actual class and not the movie / stage its attached to.The round-about way I've done it before is to dynamically add the object in the library and pass in the root path when I create a new instance of it (example: submc:sub = new sub(this); ).Is there anyway to get back to the document class with a built-in method like root, etc?
I can access the targetObj instance inside the document class, but when I try to access it in another .as class,get this error:
Access of undefined property targetObj.
I m trying to access stage.width property but sometimes it trace 650 and 720 but i see my flash file dimension is 500x400, I need to align objects on stage..
View 1 RepliesI want to know how you access a variable within the fla file from the Document class?I want an int inside the fla or swf file to be accessed from the class that is being used to run the file?
View 5 RepliesI have a "box_mc" movieclip on the root of my stage and I need to select it from within my Document Class. I thought Stage.getChildByName("box_mc") would work, but it just returns null.
View 2 RepliesIf I wanted to do something like this:
<mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml"
horizontalScrollPolicy="off"
verticalScrollPolicy="off"
[Code].....
How would I get a handle on myCanvas (where I'd want myCanvas to be the root )?
I can access the targetObj instance inside the document class, but when I try to access it in another .as class,get this error:
Access of undefined property targetObj.
I am trying to add a keyboard event listener to the stage, to detect when a user clicks the left or right arrow keys. But this listener is called from inside a class file which is imported into the document class, therefore I think it doesn't know what "stage" refers to. How do I solve this?
[Code]...
Let's say I have a FLA file with document class called main. In main, let's say I have a method called test1 that just outputs "hello world" via trace. On the FLA I have a movie clip. In that movie clip, when the timeline reaches frame 123, I want it to invoke the test1 method (I just set up a simple action on the frame). However, I get an error saying that the method is undefined. I try this.parent.test1() too but that gives me the same error. Is it not possible to invoke a document class property from within the timeline of a movie clip that's on the stage?
View 2 RepliesI often write apps in flash where I wrap all the display elements into one parent display object container (not the stage). Let this parent container be mc_world for example. I declare this in my Document class (Main) as:
ActionScript Code:
public static var mc_world:MovieClip;
Since this container is unique and often times needs to be referenced from various classes in the project (that are not its children) I find myself often doing Main.mc_world across my project to access this container.
Is it bad practice to directly access static members of the Document class throughout my project? Are there any simple alternatives? I don't want to dispatch events every time I need to access mc_world. And using a singleton class doesn't seem all that different from the Document Class (which only has one instance right?).
I am start developing small games (I have just finished reading a nice book from Rex van der Spuy) but I would like to use the best OO approach.Let's make a very simple example: suppose that i have a Player class which adds a listener to the stage waiting for keyboard events in order to move around the stage.I have also some enemies on the stage and the player must register a collision with them; what is the best approach in order to access the enemies on the stage and check for a collision with them on the ENTER_FRAME player's event? I have read a lot of solutions, but I am just starting coding and so I don't know which one is the best approach.
a) Access the document class directly with a getter (e.g. Main(root).allEnemies, supposing that every time an enemy is created it is added to the allEnemies array)?
b) A singleton class which has a reference to every instance in the stage?
c) I have read about using events, how?
ActionScript Code:
package
{
import flash.display.MovieClip;[code].....
Anyways, I've been trying to figure this out for quite some time.Let's say I have my document class. I'm guessing the document class can correspond to the first thing that gets run? (such as the "main" function in most C++/low level languages).If I set a variable in it:var myNumber:Number = 10;how would Iaccess: "myNumber" from other objects in my stage?Like a movieclip on my stage for example.If I go inside that movieclip into the movieclip's first frame, how would I say:trace(TheDocumentClass.myNumber);Another similar question is, what about the actual stage frame?If I click on frame 1 of my stage, set a variable:var aNumber:Number = 5;how would I access it from other objects?In my movieclip's first frame, what would I put?trace(root.aNumber); ?trace(stage.aNumber); ?
View 9 RepliesHow do I acsess public var/functions in the document class?
View 7 Replies