ActionScript 2.0 :: Classes Of Nested MCs Not Construct Immediately?
Mar 19, 2006
I'm an intermediate AS2 coder starting to use better OOP practices. I have searched for the answer to this but have not found anything, perhaps because everyone else learned it a long time ago.It appears that classes which extend an MC which is contained inside a different MC do not run their constructor immediately after the containing MC is instantiated. Also this MC's methods are not immediately available. As a result I need to wait a bit, by using onLoad or another frame.Here is an illustration which I have made as slim as possible:
LIBRARY:
--Symbol with ID "ball", linked to AS2 class "Ball".
--Symbol with ID "box", linked to AS2 class "Box". This symbol contains an instance of "ball" which I dragged in there and gave an instance name "ball_0".
--Symbol with ID "launcher", linked to AS2 class "Launcher".[code].....
QUESTIONS: How can I fix this so that setB would work in the above example? I have found two workarounds but I wonder if there is another which feels less kludgy.
Solution A): As seen in the example, put into Ball an onLoad function (or maybe just its constructor) which then runs any initialization functions. As a result I need to store in the object some properties which the object can find in itself and use for initialization.
Solution B): Put the method call on a timeline frame after the frame in which the attachMovie is done.
At the heart of this question is, why can I set the ball's properties (as seen with setA) but not be able to call its methods successfully? On one hand, I can see that the thread is busy with the box's initialization and can't be expected to run ball's constructor right away, even though ball has been instanced. But on the other hand, I am actually calling a method of an instance which is obviously there, so shouldn't it have the common decency to do as I ask?
Bonus question is, is the fact that this does not work a bug in Flash AS2 or is it perfectly to be expected due to some CS common sense which I lack?Another bonus question is, is this a harebrained way to use Flash AS2 classes—linking symbols to AS2 classes which extend MovieClip (or which are subclasses of classes which themselves extend MovieClip), and using attachMovie to instance all of these MCs except the one "Launcher" which is the only thing on the .fla's stage? It's a cornerstone of my architecture so I'd like to know if this is utterly daft.
I'm trying to build a simple FLEX application. Unfortunately, I get '1131: Classes must not be nested.' errors even with the simples MXML .... the error pops out at the mx:Application openning tag: (I'm using PureMVC if it's important)
I have created a simple class to change the color of a movie clip on the stage. The movie clip that I want to change the color of has 3 other movie clips nested inside of it. Here is the structure of the Movie Clip
In my project I have to classes that inherit the MovieClip class. Then I create a movie clip and in the library I click on linkage and I set on AS2 class field the name of the first class. Inside this movie a create another movie clip and I set his AS2 class to the second class. The problem is, when I run the file the properties of the nested movie clip are not available for the parent. What a mean is that in the constructor of the first class I cannot acces the methods of the nested movie clip. Somehow I need the nested movie clip to be initialized first and then the parent.
For some reason I can't get this nested set of functions to work, it executes the first tween and the tween invoked after motion of the first is finished but it doesn't ever get to the third!
ActionScript Code: var t1:Tween=new Tween(p1,"rotationY",Strong.easeOut,90,0,50,false); var t1x:Tween=new Tween(p1,"x",Strong.easeOut,-900,0,50,false); t1.addEventListener(TweenEvent.MOTION_FINISH,onMotionFinished);
I am trying to create a gallery. I am having a problem coding the document class for a menu window ("galleryPane"), which is to be called into the Main class at runtime. In particular, I am encountering problems dynamically creating the thumbs container. I want the thumbs container to be accessible from both the galleryPane class and the Main gallery class [the galleryPane class will need to control thumbsContainer scrolling properties, and the Main class will load content into it].
I have an empty movieclip in the .fla library (with a class name of "All_thumbs" for exporting purposes). In my galleryPane class, I have created a new public instance of this (called "thumbsContainer") and have added that within the nested structure in the menu. However, when I call it in a later function to manipulate its movement, the undefined term error is thrown and I cannot understand why. Here is what I have in the galleryPane document class.
I have a large flash app (> 100k) w/ its own looping preloader animation in the first frame. This preloader should happily spin while the app loads. (For various important reasons, I can't use a separate SWF to load the app.)Bug:When I export the classes in a later frame, all of the preloader animation's simple timeline commands (stop, gotoAndPlay) stop working.Test:I can reproduce this in a very simple test:The red ball should stop (as seen in example 1) and doesn't (example 2).Question:Do any of you know how to get around this? I've been trying everything I can think of and haven't found a solution. If this is unbeatable, it seems the only real timeline preloader you can do is a code-drawn progress bar
I have a few questions I am hoping to get a few clear answers to. I have been looking around the web and in books for the last few hours and I can't seem to get an answer that is clear, at least not clear to me Question1 If an external class such as a document class is used, you cannot simply access a nested movie clip that has been dropped on the stage from the library using dot syntax, is this correct? Example:
I am playing around with saving .xml files from data in my game. I know how to convert an xml object to a ByteArray and write that to a FileReference. What I need to know now is how to go from an empty xml object (using var xml:XML = new XML()) to a fully populated xml object.
Can someone show me what functions to use to add nodes and values? Specifically I need to know how to make several of the same type of node. Here's a sample of what the final xml should look like[code]...
I have an idea for a web site image in which a 3d object moves across a background, turning as it moves and thereby demonstrating its 3d nature. Obviously, Flash supports design of the static background and the motion of the object. But can Flash construct that 3d object with the complexity of say for example Autodesk? If not, and I have to construct the object with a 3d design application, what 3d file formats does Flash support?
I am trying to construct a timed loop... so far without success.What I need is a loop where iteration 0 + i + 1 starts a few seconds after iteration 0 + i. I tried putting a timer inside the loop but the loop seems to simple skip the timer instead of executing it sequentially before starting the next iteration. Here is the code snippet:
Code: var iTimer : Timer; for( var i:int = 0; i < 2; i++ ) { trace( i + " i iterations" );
[code]....
The loop does not seem to wait for jLoop() to be executed. It speeds ahead onto the next iteration, instantiating a new timer and thus screwing up the timing of the iterations. I have tried different things like putting break and continue statements in there but to no avail.
how I can avoid this type of ridiculous code I am having to use:
function resetText():void { pathText_textField_1.text = ""; pathText_textField_2.text = "";
[Code].....
In lingo I would run a repeat loop using the base "pathText_textField_" and adding the number as a string for each one. Is this possible in as3? I mean can I construct the mc reference using code somehow? I can of course make the names as a string in a loop but you cannot use a string as a mc name right? If not then how else can you send the same instruction to multiple mcs?
So what will be faster:a) From actionscript construct library items and put on stage and Tween;b) Or keep those library items on stage, but not on visible zone and then with actionscript make them appear with a Tweener?
I'm having 2 problems (that I know of)... I'm not sure that "tscroller" is the movieclip I want to preload for the thumbnails, and I can't get my movieclip entitled "thumbpreload" (which is set _visible = true; here) to show up. This preload function seems to conflict with the main image preloader and cause it to stop working. The file I'm using can be found here: [URL]
How do you properly set a public variable or property in a construct? I'm pretty sure this is the wrong way of going about it: Code: private var subNavLoader:Loader = new Loader(); public var type:String; public var w:Number; public var h:Number; public var path:String; [Code] .....
I'm seeing lots of cool clocks made in flash, but they load the time based on your machine's date and time. I want to construct a clock which takes the time from an official time server so it will always be up to date.
I'm really trying to learn and construct a for loop in a practical, useful manner. I'm familiar with for loops, but I've never used one in a practical application. I understand the syntax.
I built an application on Windows XP and Vista. And it seems that the sound channel constructor decides not to run with no speakers attached. Runs fine when headphones are plugged in, but when no speaker device is present the Sound object is constructed, but the Sound Channel never seems to make it.
I did some testing and even the most basic Sound Constructor fails to create the default sound channel if there are no speakers connected.
In the following example channel turns up as null if no speakers are present on a Windows machine. I/O Error doesn't throw anything for me either.
This is a modified version of the example from the Adobe Docs:
Code: private var channel:SoundChannel; public function sound_test(){ var request:URLRequest = new URLRequest("audio.mp3");
I built an application on Windows XP and Vista. And it seems that the sound channel constructor decides not to run with no speakers attached. Runs fine when headphones are plugged in, but when no speaker device is present the Sound object is constructed, but the Sound Channel never seems to make it.
I have been searching for a tutorial to teach me how to create a custom form. Unfortunately there are none. I've tried taking a few free forms I have found and customizing them but to no avail. Therefore, I have come to this fountain of knowledge to see if I can find what I am looking for. I want to fully understand how to construct the forms and the php file in the event I need to create different types of custom forms successfully. I need a form that has the name, email, phone number and of course the send button.
DISCLAIMER: relatively new to Flex/AS3, I might be missing something obvious. After doing some research it appears that using the for(var property:String in object) does not guarantee the enumeration order of properties, however it doesn't say anything about modifying the VALUE that property points to as changing the for...in loop.
[Code]...
As a solution I can create a temp object to store the data while doing the loop on the original object, and then replace the original object with the modified data, but I'd like to know what exactly is going on.
So my question is, does the value of object property modify the looping order of the for...in construct? And if so, should it or is this a bug?
In Flash, if i create a custom Movieclip, and compile it to a SWC, i can use it in .fla files (by linking to the .swc)..
[Code]...
All the arrangement of graphics on the custom movieClip's layers is preserved. If i subclass UIComponent and compile to a swc, I can use the custom Class in my .fla file, but the new instance doesn't seem to construct the children arranged on the layers.
I know that the correct way to make a custom component is to have the two frames, first to specify bounding box, second frame for assets, and that the first graphic in frame 1 is removed at runtime. But i'm not really trying to make a reusable component - i just want to use the UIComponent class (It seems to have some nice extensions to Sprite). As i really want some hand-positioned layers inside the component i figured i could have the bounding box as the first element on frame 1 (knowing that it would be removed), but any other items i put on frame 1 would be preserved - buttons, images, lines, etc.
I see plenty of AS3 examples of loading 1 image file into a 1 frame movieclip, but how can you take a folder full of images, load them and treat each image as an individual frame of a single movieclip?
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