ActionScript 3.0 :: Finding All References To An Object?
Aug 12, 2009
* Is it possible to create weak references to objects (like theventListener/EventDispatcher is able to do) so that if they are removed, you won't be stuck keeping a reference and taking up space to something that should be garbage collected?* Is there any way to find out how many active variables are referencing a certain object? This would be handy to actually create weak references, since, if you for example, have a static array containing all objects created in that class, you can do a regular check to see if there is only one remaining reference, and if so, you can safely remove it.
* Also, might there be any way to list the entire space (one big chunk of binary data, most likely) of every variable currently running in the program, all references, basically, what Flash is currently storing in RAM?I'm pretty sure that Flash (as crappy and lacking as it is in so many areas) does not have anything like any of these built in, but hopefully there is at least something.
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Nov 4, 2010
I'm writing an application where I have many objects (data models) that are identified by a unique String ID that every such object possesses and these objects can refer to each other by their IDs.So far so good but now I need to keep track of which object keeps a reference to another object and of course there are cases where an object references (or is referenced by) more than one other object and I was wondering what would be the best method to store these references? In a simple map data structure I could just map one object's ID to another but as mentioned there are cases where an object can hold a ref to an arbitrary amount of other objects
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Mar 8, 2012
Does anyone know if it's possible to list the references an object currently has in ActionScript3 (e.g. listeners, children etc)?
I'm trying to clear an object from memory ready for garbage collection but for some reason it's hanging around.
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Sep 22, 2009
I am trying to create an object that is handling the events of different objects. The object is created in the 1st frame of a code layer:
ActionScript Code:
var gImageEdit:ImageEdit = new ImageEdit( imgAction, movImageFront,
movToolbar.btnZoomInImage, movToolbar.btnZoomOutImage, gZoomSound );
[code].......
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Jun 3, 2010
I'm just getting to grips now with how the Garbage Collector works.
Is there a way (like a function or a custom class available somewhere) to check an object for all its references and return them so that you can see what it's connected to?
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Oct 29, 2010
I want to do is create several arrays to hold groups of movie clips (i am using as buttons) which have similar functions so that I can add event listeners using a for loop statement rather than making a huge list of add and remove event listeners.I have seen this method working before but I cannot get my code to work!! This is probably a very noob concept but I have been struggling with it for hours.Ok, so in the extends movie clip bit on my as file I declare the array as such:public static var controlBtns:Array;Then in the initializing function I put values into the array as such: [code]The trace seems to output all the object names (as they are listed in the library) and then I get this error: TypeError: Error #1010: A term is undefined and has no properties.Which is kind of obvious as I cannot seem to access the movie clip instance names that I have set up in the array.I tried putting quotation marks around the names in the array making them strings but then I can't access properties of strings - which is obvious enough to.
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Jun 10, 2010
I have a bit of a memory leak issue in my Flex application, and the short version of my question is: is there any way (in AcitonScript 3) to find all live references to a given object? What I have is a number of views with presentation models behind each of them (using Swiz). The views of interest are children of a TabNavigator, so when I close the tab, the view is removed from the stage. When the view is removed from the stage, Swiz sets the model reference in the view to null, as it should. I also removeAllChildren() from the view.
However when profiling the application, when I do this and run a GC, neither the view nor the presentation model are freed (though both set their references to each other to null). One model object used by the view (not a presenter, though) IS freed, so it's not completely broken. I've only just started profiling today (firmly believing in not optimising too early), so I imagine there's some kind of reference floating around somewhere, but I can't see where, and what would be super helpful would be the ability to debug and see a list of objects that reference the target object. Is this at all possible, and if not natively, is there some light-weight way to code this into future apps for debugging purposes?
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Aug 18, 2009
I have a 2-dimensional array of Objects. Their location in the array determines where they appear on the screen. When I want to move an object down, I am trying something like this:
[AS]LocationArray[i][j+1] = LocationArray[i][j];
LocationArray[i][j] = null;[/AS]Of course, with the way AS3 handles objects and references, it removes the object completely. How can I simply move a reference (or remove an reference) without destroying the object?
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Sep 29, 2004
loading external SWF's and its class files hanging around after the movie is unloaded....Its kind of tricky to explain, but you can see it very clearly in this file... http:[url]...Just run the main_stage.fla within flash [mx 04] and you'll see that if you click "Tester A" it will trace out "My Name is Tester A", then if you click on "Tester B" it will load a different swf, with a different class, but still trace out "My Name is Tester A" when it should be "My Name is Tester B"....
I have tried, unloading the swf's, removing the mc_Dropper and re-attaching it, re-declaring the variable testObj as null before declaring the class,
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Nov 6, 2008
I am a new flash developer and I cannot seem to understand this problem. Whenever I try and trace one of these variables of type XMLList they all return NULL except for the last one in the array.The createDatsSets() function is designed to pull XMl data and copy it to an variable of type XMLList which resides in an array. This should happen 8 times to add data to all 8 variables.It works fine with a single variable but, in the for statement when.I try and trace any of the variables in the xmlList array only the last one has XML data in it.
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Oct 12, 2009
I'm trying to get my head around optimising AS3 code and clearing things out for garbage collection.
I understand that each time an item is referred to in the code it has its reference count increased by one, so I was wondering if there is a trace option I can use to see how many references each of my objects has?
I can then see where things are getting left behind (if they are) and where I can make optimise better.
I think it would help me work out several issues if I was able to do this
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Jun 23, 2011
On Senocular's page http://www.senocular.com/flash/tutor...ashcs3/?page=2
there is a Tip: Reducing Display Object References I need help with.
if I do:
[Code]...
without removing the listener, does that still leave a reference to "myMovie" in memory?
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Jun 20, 2011
I was thinking about Flash GC the other day and came up with a question about how reference counting would work in the following 4 class scenario (assume GuiMain is the movie's document class):
[Code]...
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Mar 7, 2011
I need to find an instance of a movieclip that is on my flash file. It is really big and uses a lot of memory. It says on the number of times used that there is one instance of the object on the flash file, but I can't find it. I thought I deleted them all but there must be one left. How do I go about finding it? It's a really large flash file with many layers, and I don't want to just delete the library file. Is there any way I can find where the object is placed in my file?
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Oct 16, 2009
We have a client server architecture where a C++ server talks to Flash clients. I'm developing the server and would like to send through tcp an xy coord to simulate a button press where the receiving flash client would find the topmost visible object at that coord and send a mouse event to it such that we could simulate play without a human present. I'm told this is incredibly difficult, but it seems to me that there must be a way to do this. Am I off the mark? Or is there a mechanism in flash to iterate through all objects regardless of parent child relationships to find a visible button at an x, y coord and signal a press event?
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Jun 30, 2010
I'm trying to write a plug-in for Flash CS5 that will display the "instances path" for a selected object. I'm trying to work with JSFL.I manged to get all selected objects using fl.getDocumentDOM().selection. I iterate over the array I get and look at the objects. I am able to get each of the objects' name. What I need to do is construct the "path" to that object (e.g., scene.scene.instance4.myText). Can anyone think of a way to do that? Is there a way to get the object that contains a certain object?
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Oct 19, 2010
Since Flashbuilder does not support WCF over https, I am considering to use weborb remoting as alternative, but not really sure how flash is going to know weborb location, if they are sitting on different servers. Looked at destination, source fields, but not really find a field called url in remoteObject in Flex.
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Jan 10, 2011
I have a menu MovieClip that has its buttons inside of it. I have the menu with a MousEvent.CLICK and trying to figure a way to register what you are clicking on.
[Code]...
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Jun 21, 2009
I have two points and an object with a given width(or length). I'm trying to find out if the line between those two points passes through the object.
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Aug 21, 2009
There is most certainly as easy way of doing this, but for the life of me I can't find it.
How do I determine the array name of an object i.e. when I hover over a certain clip on stage, I want to identify which array it is from.
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Feb 25, 2012
I'm often finding a need to get a stage-relative position of objects in my game, which are often buried several layers deep as children of children of children, etc, often with differently scaled/moved/rotated parents. The position i want isn't quite relative to the stage, but a main holder object i have on it called lvlHolder (see code below). I wrote a function to deal with it that recurses up the display list, accounting for each object as it goes, to get a global position. It's worked so far, but one thing it doesn't account for is rotation. I'm finding a need for that now, and i'm not sure how to account for rotation of objects, to rotate offsets from them,
My function is below. how i should enhance it to accomodate for the rotation of each parent object? Also any tips on optimisation would be good, as i'm using this a LOT (roughly twice per frame, per object, for physics calculations) I'm also wondering, in similar situations i've seen something related to transform matrices used
[Code]....
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Dec 11, 2009
I'm working on writing a tweening class in as2 that has a callback variable and I can't seem to find a good way to get the scope without specifically passing in a scope variable as well. This tweening class needs to work in classes as well as on the timeline. Here's what my codes looks like right now.params.scope[ params.onComplete ]( params.onCompleteParams );params is an object passed into the class. This works but I don't want to have params.scope in there.
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Jun 20, 2009
I want to find out which type an object has. Therefore I thought of the 'switch' statement, but how would you do that? The following code does not work, but you will get the point of what I want to do.
Code:
switch (object) {
case is String:
trace("string");
case is Array:
trace("array");
[Code] ....
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Mar 30, 2010
i've been working on a problem for a while now, which involves targeting the closest movieClip in relation to the x y coords of the mouse, I've attached a nice little acompanying graphic.Each mc added to the stage has it's own sub-class (HotSpots) which uses Pythag to measure distance from mouse. At this stage i can determine the closest value from my Main class but can't figure out how to reference it back to the movieclip... hope this makes sense. Below are the two Classes.My Main Class which attachs the mcs, and monitors mouse movement and traces closest value.[code]
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Feb 9, 2009
determine the base class of a Flash library object at runtime, using Actionscript? The toString method gives me the class of the object, but what I'd really like to determine is the superclass of the object. So, if I have an Actionscript class called "Fruit" and I created many different Fruit types in the Flash library ("Cherry", "Apple", etc.), is there a way in code I can determine that an "Apple" is a child of "Fruit"?
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Jun 5, 2006
Is there a way to have a function draw a box around an object by finding the objects instance name via a string?
such as:
Code:
function BoxObject(object) {
//code to draw a box around the object
}
and then juts have an object with an instance name, like "my_mc" and then call the function on a keyframe like:
BoxObject("my_mc");
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Jan 20, 2010
I have a video inside of another movieclip. When I go full screen, I scale up the outer movieclip to fit the screen. So that OuterMovieClip.width is equal to screenWidth etc. How do I maintain the aspect ratio on my video so it does not get distorted? Whats the proper math for that?
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Jun 9, 2010
var array1:Array = new Array();
var array2:Array = new Array();
var obj1:Object = new Object();
array1.push(obj1);
array2.push(obj1);
How can I do this what command should I use?
//obj1's position in array1
//result: 0
//obj1's position in array2
//result: 0
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Mar 19, 2012
Types like Movieclip , String, Object act as references when declared and defined, while types like int, Number are primitives. Why such difference has been made. Why not all of them can be primitives ?
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Aug 15, 2009
I'm using the CSS object (TextField.StyleSheet) to format my dynamic text, which is loaded from an XML doc. I tried referencing more than one class, like <span class="body bluetext">. However, it doesn't seem to work because it ignores the first syle(s) and only applies the last one in the list. I'm guessing Flash doesn't support this (since they're CSS support is already very weak). Just want to make sure I'm not doing something wrong.
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