ActionScript 3.0 :: Using Interfaces With Display List Classes?
Feb 19, 2009
I would like people to be able to change this custom scrollItem class, but as the scroller class has some interaction with this scrollItem class (sets id etc), I have the scrollItem class implement an interface to guarantee the presence of the required methods.This works fine, but only if I keep the type of the scrollingItem class within the scroller class. I would prefer to substitute in the interface type for each scrolling item. However, I cant, as the interface is not a DisplayObject. I can get around this by casting the interface type as a DisplayObject whenever it needs to do DisplayObject type things, but this seems like a hideous hack.
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Mar 6, 2010
I'm making the game Breakout as an AS3 application using OOP. I am getting very confused though. I know that objects should be only responsible for themselves. But this is where I get stuck, they need to communicate as some level to add and remove screens, and I am getting majorly confused as to what is going too far, when it could maybe achieved in a simpler more OOP way. I've worked out the hierarchy of my classes, in terms of where they are being added (I think). I've added a screenshot of the hierarchy.
Have I got the order right based on OOP principles? Like, Introscreen will listen for play being pressed then call a method of the document class that will remove introscreen and then attach gamescreen. Is that right? Another thing that puzzples me. It seems to me if I made a level and put the paddle and the ball in that, then arranged all the bricks in that level, that I'd be duplicating work (based on the fact I need paddle and ball for level 2 also). So it would be best if I could have gamescreen with paddle and the ball and then add level1/2/3 to display list which would therefore set up the appropriate brick placement. But then, wouldn't that mean that I couldn't do hittests because my level 1/2 or 3 wouldn't be a sibling to the bat and the ball, them residing as a sibling in the level's parent class?
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May 25, 2011
What I was told, which sparked my curiosity on this topic:Java gui classes can implement hundreds of Listeners and Callbacks and many books teach you to implement all these interfaces in your gui class. Alternatively, these aspects can be implemented in inner classes, so methods called by that listeners do not get mixed up.'d like to know how to do this in ActionScript, which doesn't have inner classes, but has private classes. But, I don't think I fully realize what inner classes are about, so I'm merely trying to wrap my head around the situation where I would use them to organize a class' methods by their usages.
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Sep 26, 2010
I'm making a game which loads map .swfs at runtime. The maps will contain graphics and code, which can both vary from map to map. I've decided to make all the maps implement an interface, so they can all be used in the same way by the game. I'm using a .swc to contain the interface, like in this page.
I can get classes to work in the .swc, but not interfaces!
I'm using Flash cs5, and flashdevelop for editing, in AS3. Here's how I've been doing it:
1- create map.fla with a symbol called Map, and a Map.as:
[Code]...
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Aug 20, 2011
From what I read, interfaces are basically classes for methods, right? If two classes implements the same interface, then they should both have methods described in the interface.
Now, how is this useful? Let's say I want to call foo()
[Code]...
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Aug 5, 2011
I have a list containing display objects from throughout the application (insertion order). I want to process the list either top-down (parent, child) or bottom up (child, parent). The only requirement is that either a parent is processed before any child or vice versa a child before its parent. What is a good approach? This question is not about sorting a list. It's about retrieving the depth of a particular display object.
Example
Display list:
A (root)
B1
C1
C2
D1
B2
......
My list:
list = [E1, F4, A, B2, B1, C3, ..., N9, N8]
Bottom-up:
N9, N8, F4, E1, C3, B2, B1, A
Top-down:
A, B2, B1, C3, E1, F4, N9, N8
Does not matter if N9 before N8 or N8 before N9. Important is that any N is before M (first run) or any M before its children N* (second run).
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Mar 6, 2008
Is there any way to test if a display object has been added to the display list?
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Mar 4, 2011
What's a simple way to detect if a display object is currently on the display list?
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Jun 28, 2011
How do I identify all the display objects in the display list in ActionScript, bellow the one that I have clicked? All the other objects are shadowed by the first one. What if other objects have visible parameter as hidden?
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Jul 8, 2011
I was wondering if there is a shortcut so i can always set a MovieClip to display at the tippy top of the display list?
Also i understand that WebViewLayer will always display above the display list.
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Feb 9, 2009
It's my understanding that a display object cannot be in the display list more that once.So if I add something to the stage shouldn't a second addition of the same object replace the first? for instance:
[code]...
there should now only be one "myDisplayObject" on the stage.
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Aug 26, 2009
Is there any way to get a list of custom classes? I'd like to be able to dynamically access the custom classes (that I've created by the "Export for Actionscript" checkbox in the "Linkage" dialog) without having to hard-code their names into the script.
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Nov 29, 2008
Is there a way in AS 3 to list all classes and their associated methods? Or at least a way to list the methods within a particular class?
It seems that it's all so overwhelming and although I'm well versed in Lingo and have a handle on the Lingo dictionary,I feel as though the AS 3 library is dauntingly big.
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Nov 1, 2010
I'm working on a project where I need a sort of quick list of class functions.
To clarify, say a user starts typing MovieClip. I want to bring up a list of classes as the user starts typing, complete with the package name. Kind of like the action you get when typing in a Google search or something.
Really, I just need to find an XML or JSON list of all classes, including packages, that I can load when the application loads up, so that I can create the quick list.
I've been scouring the net, but perhaps I'm not formatting my search query quite right, and I'm getting no hits.
I'd really hate to have to create a program that goes through the LiveDocs and parses all of the HTML to output a file with all of the classes.
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Feb 16, 2009
I have created a list of Classes in a school in Excel and saved it as an XML file. In each row it contains the name of the class followed by a list of class members. In col 1 is the word "Class", in the next col is "7C1" ( or equivalent) then each cell after that contains the names of the class members. I can load the XML file no problem, and display the full contents using 'trace', but I don't seem to be able to extract just the class names and student names to use in a Flash application. The code I'm using so far is attached.
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Jun 15, 2010
I have several Flex applications in a project, and I would like to know if there's a way to get a list of the classes (and ideally, other assets) that are being compiled into each one. I want an easy way of making sure I've kept things separate and there aren't unnecessary dependencies. Any ideas? I'm running Flash Builder 4.
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Jul 3, 2011
I would like to check if object has a DisplayObject as one of it's ancestors and perform some operations on it if it has. Any quick and easy way to do this?
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May 20, 2009
What I want to do is compile an .fla with nothing on the stage but several of the movieclips are set to export on first frame in the properties linkage manager. When the .swf runs, I want to loop through and get the names of all the exported assets so I can place them in an array and manipulate them later.
I want to turn the code over to the art team where all they have to do is attach my .as file for the document class. I will not know what they name their movieclips, yet they are instructed to name them alphabetically according to what order they should appear. (My code is a sort of self contained slide show).
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Nov 27, 2009
A Flash movie loads another movie that contains various asserts - movie clips in its library with 'Export for Action Script' settings set.
Is there any way to determine the list of class names of all these exported asserts from within the movie that loads them?
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Jul 4, 2011
Is there a way to get a list of all the skin classes that are in the current application? I'm using Flex 4.5.1.
Here is the loop that I'm using now to get all the skins,
for each (var item:Object in styleManager.typeHierarchyCache) {
for (label in item) {
if (label=="spark.components.supportClasses.Skin" ||
[Code]....
The reason why is because I want to list all the skins in the application and then be able to apply them in real time so I can see what they look like.
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Dec 11, 2011
I have x amount of classes in a package eg. "com.trevorboyle.lotsofclasses" and I keep adding more (These classes will probably all be static and will probably all extend the same class).I wish to create a drop-down list of all these classes, preferably without having to manually create an array myself.
Once a class is selected from the list, I'll be able to use getDefinitionByName to return it, because I will know it's name at this point.The question is, as I believe there is no support in AS3 to list all the classes in a specific package, is there a design pattern that handles this?
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Dec 27, 2009
Dose this encompass all manner of display,net and event classes
import flash.display.*;
import flash.net.*;
import flash.event.*;
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Jun 2, 2009
I'm having alot of trouble tracking down the name of an object on the display list so i can removeChild Is there a way to trace every object on the display list so i can get its name and remove it? my stage is changing dynmically and i can't jut trace each object through a whole whack of code.
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Nov 6, 2009
I have a list box in my flash file that I would like to display a string from an xml file that has been run though html entities in php. So for instance I need the string.
Code:
Hey "Leonardo£$£$()*%£% '"' [1999]
to display as
Code:
Hey "Leonardo;$;$()*%$% '"' [1999]
I can get this to happen in my dynamic text boxes by using .htmlText to display but I have no idea how I would do this in the list box?
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Jan 20, 2010
I've got MovieClips on the stage, both manually added, and added with code. I used this code to trace them all:
for(var i:int=0 ; i<stage.numChildren; i++) {
var myObject = stage.getChildAt(i);
trace(i);
trace(myObject);
}
All it returns is 0 and [object MainTimeline]. Is there something wrong with Flash, or did I do my coding wrong? The objects I put on the stage should be on the Display List, right?
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Feb 3, 2009
How do I removeChild only if it's in the Display List?One button on my stage will addChild(radioButton) and another removes it. If the remove button is clicked first, then it obviously tries to remove something that has not yet been added and an error is returned. I've tried using the DisplayObjectContainer class with the contains() method to no avail.
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Sep 14, 2008
in my Main.as file, this works as expected:
var t:TextField = new TextField();
t.text = "hello in main";
addChild(t);
However, when I create an instance of a class, and I have that same code in the constructor of that class, the text doesn't show up. I am creating the text field variable at the class level, not the contstructor level, so I think the variable should still hang around.
Do I have to get an instance of the stage, or something?
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May 26, 2010
The documentation for the List component at[URL].. states "A list can also display graphics, including other components," but nowhere can I find an example of HOW to make this happen. Can anyone please point me to a working example, I really need to be able to leverage this functionality, but I cannot for the life of me find anywhere it's being done.
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Oct 4, 2010
i have this really basic class and all it does is create a button...i have another class called main where i want to put the button on the stage...problem is it all compiles but can't get the button to display..
public class Main extends Sprite
{
public function Main()
{
[Code].....
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Apr 26, 2010
I'm working on a game that has many elements on stage, so I'm looking to optimize my loops. I know that Vector is faster than looping an array, but I'm also in some cases using:[code]My question is when I use getChildAt, is that accessing an Array or Vector or linked list or other? Should I instead store references to my objects in a Vector and loop through that instead?
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