ActionScript 3.0 :: Manipulating Instances From External Class?
Feb 3, 2006
I've got an image slider that I'm trying to convert to external classes (OOP and everything). I've got four bars on stage (bar1, bar2, etc.) and I'm shifting them left and right from a "Shifter" class through library linkage. I can get the individuals to shift, but I want more than one to shift (click the right-most one and all open, click the left-most one and only it opens). Like an accordion, basically. I'm new to OOP, and I can't access the individual instances. So far, I can trace the instances using:
for (var i:int=0; i < numChildren; i++) { trace(getChildAt(i).name)}
(and get: instance1, instance2, etc.)
How do I record the instance into my external class? Something like:
(very rough example)
var bar1:Object = getChildAt(i);
var bar2:Object = getChildAt(i + 1);
etc, etc
I've tried pushing them into an array. No luck.
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May 6, 2009
I've got an image slider that I'm trying to convert to external classes (OOP and everything). I've got four bars on stage (bar1, bar2, etc.) and I'm shifting them left and right from a "Shifter" class through library linkage. I can get the individuals to shift, but I want more than one to shift (click the right-most one and all open, click the left-most one and only it opens). Like an accordion, basically. I'm new to OOP, and I can't access the individual instances. So far, I can trace the instances using:[code]
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Jun 6, 2010
I have the following code to insert a kind of paging in as3
var xPos: Number = 10;
for (var i: Number = 0; i <clips.length; i + +) (
ItemNo ItemNum var = new ();
ItemN.x xPos + = 10;
[code]....
where: ItemNum () is a movieclip with other movieclips inside I need to click on them to handle their condition, for example:clicking on two, change your status to visible = false; for example when I give the name of the instance I gave "ItemN_1" it gives error
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Feb 27, 2010
i retrieve a list of instances located in a array to manipulate them in a variable holder. Normally, the operations can be made between two instances stored in a simple variable to variable fashion and it works realy fast.I analysed two main operations: retrieving references in a array to a variable and get or set a value from the variable reference.Here are the objects used to perform the test operation:
var v4:Vector.<Person>= new Vector.<Person>();//List of Persons instance
var refHolder:Person; //Typed referencevar refHolder2:*; //Not typed reference
Test #1: looping 200 000 times and only retrieving references from the array v4.[code]........
So my conclusion with that test is that with a typed reference you spend more time assigning a reference than manipulating a value from the reference With a not typed reference, the time spent is in manipulating the reference in the variable.Which one should i use or what should i do to have better performance with manipulating references from arrays?
Here are the files i used to test this:
reference.swf //Online example
reference.zip //Source file
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Sep 24, 2006
I have been able to draw rudimentary shapes on the main timeline by importing this class on the main timeline (first frame) and plugging in the requisite parameters.[code]When I have created movieclips without actionscript, then attached AS 2 classes to them I can manipulate them. If there is not a way that I can manipulate AS-generated clips on the main timeline, is this doable from within the class?
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Jan 9, 2011
I've created a frame-by-frame (180 PNG's) rendered animation, put those PNG's into a .fla and created myself a nice "little" (8MB) .swf animation. The idea is that I can manipulate the timeline of this animation through the position of my mouse pointer; position of pointer on the left side of the stage means that the animation will play backward, position the pointer in the middle, the animation stops and when you position the pointer on the right side of the stage, the animation plays forward (as regular). The animation is looped, so it will go on indefinitely.
Now, this all works, except for the occasional hiccup. The animation seems to run smoothly but every now and then it glitches a frame or two. This really damages the experience and beauty of the concept I'm trying to establish. I've added a small fps/ms counter and it indeed shows a drop in frame-rate and a peak in the ms every now and then. This is not consistently happening on a single frame or anything, it seems rather random.
current method;
Code:
// used in the enter frame event
_animation.gotoAndStop(_animation.currentFrame + 1);
This seemed to be working the best so far (the least number of glitches). Perhaps it is a bit blunt?
previous methods;
- I've tried to 'tween' the animation by creating a tween (using greensock's TimeLineLite) and either 'play' the tween or 'reverse' the tween (according to the mouses position). This seemed to work properly, but I could not find a way to loop the tween both forward as well as backwards. The tween would loop indefinitely forwards, but when 'reversing' the tween, it would stop after the number of forward loops it had made. So if the animation made three whole loops forward, it would stop after three loops backward.
- I've tried to 'tween' the frames of the animation using greesock's tweenLite;
Code:
TweenLite.to(_animation, 1, {frame:_animation.currentFrame + 1, useFrames:true});
// or something in that order, can't remember.
Something like that, it worked, but it was glitchy as hell (obviously).
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May 4, 2009
Essentially, i have loaded an external SWF (area-home.swf) w/in a MC (mc_loader) of the main SWF (base.swf). This is simple, not a problem, works like a charm. What I want to do from here is have the main SWF (base.swf) tell the external SWF (area-home.swf) to gotoAndStop at a certain frame (42). Below is the code that I have, and can't quite figure out why it won't work:
PHP Code:
var loader1:Loader=new Loader();
loader1.contentLoaderInfo.addEventListener(Event.COMPLETE, myFunction);
loader1.load(new URLRequest("area-home.swf"));
[code]...
When i trace the total frames, it does bring back the actual frame count from area-home.swf, so I know that it is communicating. It simply does not stop on the 42nd frame (even have a stop(); command on that frame in area-home.swf's timeline)
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May 4, 2009
i have loaded an external SWF (area-home.swf) w/in a MC (mc_loader) of the main SWF (base.swf). This is simple, not a problem, works like a charm. What I want to do from here is have the main SWF (base.swf) tell the external SWF (area-home.swf) to gotoAndStop at a certain frame (42). Below is the code that I have, and can't quite figure out why it won't work:
PHP Code:
var loader1:Loader=new Loader();
loader1.contentLoaderInfo.addEventListener(Event.COMPLETE, myFunction);
loader1.load(new URLRequest("area-home.swf"));
[Code]....
When i trace the total frames, it does bring back the actual frame count from area-home.swf, so I know that it is communicating. It simply does not stop on the 42nd frame (even have a stop(); command on that frame in area-home.swf's timeline)
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Jul 8, 2007
I want to know how to make class instances into listeners and broadcasters, from inside each class. Here is what I am trying specifically... part of the Proj class... (projectiles, as a matter of fact)
Code:
private function listen():Void {
u.register(this);
onUpdate = function(){
step(); // a function I have which makes the projectile move (not shown)
}
}
where "u" is another class, the Updater class with this code...
Code:
class Updater {
// const. --- make this a broadcaster
public function Updater(){
[code]....
PS: What is the syntax for using AS2 code tags instead of just "[CODE|"?
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Jul 16, 2009
I'm slightly new to Flash CS3 + AS3 combo, so its more of a lack of practice question. My question stems from the problem described here http:[url].... . Note, its not the same problem, its a new one.The Problem ,So I have multiple library assets (which are on teh stage) and I want to assign similar functionality to all of them.
Attempt 1: So I create the n assets, create a custom class in AS3, link them to Flash CS3 and obviously enough it gives me the error that multiple assets can't be linked to the same class.Obvious enough to understand (well not completely, because from a programmers background it doesn't make sense).
Attempt 2: Same as attempt 1, but instead of linking all the assets to the same class I make the base class the same class, and let the derived class be dynamically created by Flash on compile time.So the linking works, but the problem is, in my base class I have a method which does something (say an tween) on a child of the library asset. So if the assets on the stage/library are called asset1, asset2, asset3 (same name for asset name, class name, id name), each of them has a sub-movieclip called ... say 'foo'. now if I manually wrote a class for each asset, I could do 'this.foo' to play with the sub-movieclip. However since this functionality is in the parent class, I'm unable to do it.
P.S. If you're form a programming/OOP background, its basically a abstract class problem. My Base class knows how to doSomething(), but it needs aSomething, which is defined in the Derived classes. However I found out that AS3 classes don't support virtual(C++ )/abstract (Java) in the true sense of the word (unless I missed some obvious documentation).
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Dec 23, 2006
Let's say i have a bunch of balls/cells. I'm having trouble figuring out how to make it so that every other ball bounces off of every other ball.
so in short, it's really one instance being able to check all other instances of the same ball class?
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Jul 25, 2011
I've been hitting dead ends while programming lately all over, and I finally came to the realization all the code I have that is broken is because I don't know how to interact with instances of one class from within another. Here's the gist of what I am trying to do:
if(this.hitTestObject(targetClip)){
trace("hit!");
}
The problem is, if I address a single instance that is on the canvas, I get "access to undefined property targetClip", even though the document class can interact with it fine. If I target the class file of targetClip, I get "Implicit coercion of a value of type Class to an unrelated type flash.display:DisplayObject". It isn't just a problem with hitTest either, I'm having this problem with other actions, so there is some basic syntax I'm failing to comprehend.
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Feb 17, 2009
Is it possible to create 2 instances of 1 class (for example: "Header"). Add these 2 instances to the stage on different positions. This Header class contains some buttons and what I want, is: when I rollOver one of these buttons, both buttons in the 2 Header instances are "rollingOver".
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Oct 4, 2010
I have a piece of code, that moves an array depending on it's type. If the array is of TypeA objects, it will change TypeA. If it is TypeB it will change TypeB. The issue with the current code is the repeative blocks.
[Code]...
Which stops working whenever I need to access any property (user) selectedInstance.testSomething();
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Sep 17, 2011
I need to get all the instances in my stage according to an especific class name. I'm doing this:
var class_ref:Class = getDefinitionByName('fran.MyOwnClass') as Class;
var element;
for (var i:uint = 0; i < this.parent.numChildren; i++)
{
[Code].....
But I want a better way (more efficiently, without checking all the MCs).
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Mar 25, 2010
I have a Main.fla which loads Main.as as its document class. In Main.as I have a public function named "Main" which runs a trace. I also have another .as file called Preloader.as, which also has a public function in it, this one named "Preloader" with simple trace in it. I just cannot figure out how to use Preloader() from the Preloader class in Main() from the Main class. Main.as loads up fine when the SWF loads and traces.
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Oct 8, 2009
I recently learned how to use gravity so I made a bouncing balls program but I have an issue with the interaction between the frame timeline code and the class.The problem is that when I create instances with a timer, I declare the variable inside the timer function. And I want to add a blackhole sort of thing when I click down on the stage but I cannot access the object from the blackhole function since it's declared inside the timer.
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Aug 30, 2009
I have a class the extends a movie clip with some dynamic content in it.I need 15 instances of this class so i created a for loop for that.Im using the same variable name but im just initializing it again and again.
var thumb:MovieClip = new ThumbClass();
addChild(thumb)
my probem is that i need to find a way to control them after i created them.
[code]....
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Apr 15, 2012
I got a ton of movieclips in a class. Is there a more efficient way to apply a function to every instance in the class other than this?
var textArray:Array = [
interludes.interludeIntro.interludeBegin1,
interludes.interludeIntro.interludeBegin2,
[Code]....
I have NO idea why the above doesn't work. I want to turn every single instance in the class interludeIntro invisible, but I want to turn specific instances visible later.
how to insert code on this website, pressing "code" doesn't do anything, so pardon the bad formatting)
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Oct 8, 2009
Let's say I have created a class named Store. This class has several elements such as Name, PhoneNumber, Owner. I've created 2 instances of this class and want to know which values are different. So lets say that Store1 and Store2 are instances of this class.
Store1.Name = "John's Corner";
Store1.PhoneNumber = 111222333;
Store1.Owner = "John";
Store2.Name = "John's Corner";
Store2.PhoneNumber = 444555666;
Store2.Owner = "John";
[Code]...
Is there a way to automatically loop through all elements of a class instance and compare them to the same element in another class instance and return something when they differ?
This might be obvious but I can't figure it out.
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Feb 23, 2011
I'm new to this OOP stuff, and I'm having a hard time understanding all of this.I'm trying to recreate in AS3.0 with classes a simple whack-a-mole game I created in AS2.0 using timeline coding.I've read through a lot of forums, but I still don't understand what exactly I'm doing wrong.Heres my setup:I have a movie clip named mrBunny (my girlfriend told me to change it to bunnies as moles were too ugly.). Now there are 6 instances of mrBunny on the stage, each named mrBunny0-5.The mrBunny symbol is linked to the com.mrBunny class.The class has a method called randomPlay(); which I use to randomize the animation times of mrBunny.I also have a button on the stage with the class stageBtn.
package com{
import flash.display.SimpleButton;
import flash.display.MovieClip;
[code].....
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Dec 9, 2004
Is it possible to rename a class-instance that has already been created with a specific name?For instance:
// Step 1) Create and name class-instance
var myClassInstance_1:myClass= new myClass();
// Step 2) Change name of myClassInstance_1
[code].....
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Jul 4, 2003
[Code]...
this's been bugging me, anyone know what's wrong?
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Jun 11, 2009
I am making an AS 2.0 Class for polygons called "Shapes2". Shape2 is basically an array of Vectors (another Class I made) and is built using the function addPoint(x1,y1) to build the shape from a series of points. The points are then converted to vector-edges, etc etc.Here's the long and complicated construction:
Code:
var pent:Shape2 = new Shape2();
var rect:Shape2 = new Shape2();
if I comment out either instance, the other is functional when I test it. Trying to do two instances makes rect and pent point to the same array of vectors, but they keep other variables and properties separate, which means rect isn't just pointing directly to pent or visa versa.
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Feb 3, 2010
I have four instances of the same class called Tile, that is bound to a movieclip with four frames. They're imbedded in a movieclip that I'm using to hold all of the visuals.In the main class of my .fla I declare a variable called menu1 that is bound to another movieclip with 2 buttons on it.
I'm trying to make three things happen here: on clicking the Tiles the menu will pop up over the tile that was clicked; that on clicking another tile when the menu is already up it will close that one before adding a new one; and lastly, that on clicking the second button in the menu, it will change the frame of the tile clicked and close the menu.The tile.as has an addeventlistener in it's construction method to add the function onTileClick to each Tile.
public class Tile extends MovieClip{
public function Tile():void{
addEventListener(MouseEvent.CLICK, onTileClick);[code]....
This works fine for one tile. I can click on it, the menu pops up, I can close and reopen the menu as many times as I want, and I can use the other button with no problems.Also, clicking around on different tiles moves the menu around without repeatedly adding it, so that seems to be working fine as well.The problem is this: If I click on a tile, close the menu, then click on another tile and close it, I get an error 1009.It still closes, that error just comes up. And it will come up for any more tiles I open and close it on.Then, after clicking on however many tiles, if I do click the advance button, it affects all of the tiles, and I get an ArgumentError: Error #2025 for each tile clicked on.I tried adding a variable that held the event.target value in the onAdvance function, and using that for the gotoAndStop, but the same thing happened. When I tried tracing the name of the variable, I noticed that it was tracing the names of each tile clicked with each subsequent trace.
Am I building this all wrong?I thought that making a class for my tile object, and adding eventlisteners to the class, and adding the functionality of the tiles inside of the class would be good practice for Object Oriented Programming, but it seems to be producing nothing but errors. When I defined these tiles inside the main timeline, with separate event listeners, I didn't have this problem
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Jan 29, 2011
I'm trying to make it so that the instances of the class "Enemy" stop completely when they get too close to each other. They are circles so determining a collision is easy. But when I used this code:
Code:
if (Math.sqrt(Math.pow(x-_root.newEnemy.x, 2)+Math.pow(y-_root.newEnemy.y, 2))<=width+3) {
canMove=false;
}
[Code]....
This code works just fine when I test it against the instance of a different class, but it's not working for some reason.
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Jun 9, 2011
I have a class - call it MyClass - and an instance of that class with instance name myObject.In MyClass I declare:
public var myVariable:Number;
In the main timeline I try to set it using myObject.myVariable = 3;
In the main timeline, if I do a trace (myObject.myVariable) it will return 3. Within the class, if I do a trace of (this.myVariable) it returns null.However, if I add a line of code in my class and add this.myVariable = 3, it traces 3.Why can't I get myObject to correctly change its own parameters?
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Jul 17, 2009
I've created a movie clip and placed it in the library. I've given it a class name via the properties panel in the library. Every time I drag it to stage I want to make sure its alpha is set to 0. If I drag 300 of those clips to stage, is there a way to reference the class name I gave it in order to automatically set the alpha value as soon as they're dragged into the stage?
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Sep 22, 2008
I'm currently stumped by this. I've created a class to load xml data from a txt file, then assign that xml to a variable named siteStructureXml. When I trace the value of siteStructureXml from within the class instance it shows the expected xml data. When I try to assign the value to a variable returnedXml defined on the timeline of my movie, it's value traces as null. I've a feeling it's something blindingly obvious..
[Code]...
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Apr 1, 2010
I'm writing a series of Search windows for an application. I create the FLA files on the stage, each has 3 simple buttons: next_btn, prev_btn, and close_btn. Those all have event listeners which call findNext(), findPrev() and closeWin() respectively. Each search window looks for different things, some with a text box and some with a combo, etc.
So I have a base class com.search that extends Sprite and adds the eventListeners at startup (actually, on addedToStage). Like this:
function isAddedToStage(evt:Event){
next_btn.addEventListener("click",findNext); prev_btn.addEventListener("click",findPrev); close_btn.addEventListener("click",closeWin);}
[Code]....
If I add the event listeners in the derived class rather than the base, it works fine. But that seems to defeat the purpose of inheritance, plus it infers that I won't be able to derive new classes/swfs from those derived classes.
how does one reference objects created on the stage from a base class of that document's class?
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