RE: [Flashcoders] Object Detection AS3
If you want to check first whether the object is on the display list you can
use the contains method of DisplayObjectContainer:
// Won't throw any errors
if (myObject != null parent.contains(myObject))
parent.removeChild(myObject)
Doug
-Original Message-
From: Michael Trim [mailto:[EMAIL PROTECTED]
Sent: Thursday, July 19, 2007 9:08 AM
To: flashcoders@chattyfig.figleaf.com
Subject: RE: [Flashcoders] Object Detection AS3
Thanks for the solution, that's neat. Agree that try-catch is not an ideal
solution (but thank you too Sunil).
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Johannes Nel
Sent: 19 July 2007 16:40
To: flashcoders@chattyfig.figleaf.com
Subject: Re: [Flashcoders] Object Detection AS3
it should be fine, but i come from a background where catching an error is
not considered a sollution.
its an error and you should deal with it, not a very real and potential use
case
On 7/19/07, Sunil Jolly [EMAIL PROTECTED] wrote:
If you use the try, catch method that shouldn't be a problem.
---
try {
removeChild(myObject);
} catch (e:Error) {
//object doesn't exist as a child, do nothing }
-
That should fail unless myObject has been added to the stage.
Or am I missing something here?
Sunil
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
Johannes
Nel
Sent: 19 July 2007 15:40
To: flashcoders@chattyfig.figleaf.com
Subject: Re: [Flashcoders] Object Detection AS3
the problem with your approach is that if the object does exist but is
not on the display tree it will fail
On 7/19/07, Sunil Jolly [EMAIL PROTECTED] wrote:
This works for me:
-
var myObject:Object;
if (myObject) {
removeChild(myObject);
}
---
Another method would be to catch the error:
-
try {
removeChild(myObject);
} catch (e:Error) {
//do nothing
}
--
Or you can compare it to null:
--
if (myObject != null) {
removeChild(myObject);
}
--
Sunil
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
Michael
Trim
Sent: 19 July 2007 13:58
To: flashcoders@chattyfig.figleaf.com
Subject: [Flashcoders] Object Detection AS3
Hi Flashcoders,
Learning AS3 in the deep end at the moment, so excuse the questions
if
too newb for this list.
In AS2 I may have done something like the following.
_1___
if(myObject){
myObject.removeMovieClip();
}
this.attachMovie(MyObject,myObject,1);
_
What would similar code look like in AS3? As
_2
removeChild(myObject);
_
fails if myObject doesn't exist yet as does
_3___
if(myObject)
_
Which I don't think you can do anyway?
It's the last one I'm really interested in, how do you detect if
something exists?
Thanks
Michael
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[Flashcoders] RE: obfuscation swf !
Since we're talking about obfuscation/encryption does anyone know of a tool that works for AS3 yet? All the standard tools seem to stop with Flash 8/AS2. Doug -Original Message- From: Sunil Jolly [mailto:[EMAIL PROTECTED] Sent: Wednesday, July 18, 2007 2:09 AM To: flashcoders@chattyfig.figleaf.com Subject: RE: [Flashcoders] RE: obfuscation swf ! I agree with JC that it wasn't really necessary to be quite so spiteful about defeating his code. I think the problem may have come from a here's my solution, try and break it attitude instead of simply giving details of how it (was supposed to) work. Everyone here shares their knowledge to help other people, where in this case it didn't seem like it. As far as I know, any flash file (.swf) is downloaded to a client's computer to be played, so its impossible to stop people from downloading your swf files. Sunil -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Hans Wichman Sent: 18 July 2007 05:56 To: flashcoders@chattyfig.figleaf.com Subject: Re: [Flashcoders] RE: obfuscation swf ! Hi, I might be wrong but like Bart said, I think SWFEncrypt does all this already. At least I haven't had any problems with this andits fast too AND usable from a build file. But I'm sure some of you will be able to crack it. What I do have problems with is the attitude displayed towards Jimbo by some of the responders for trying to come up with a nice and easy solution, even it isn't foolproof. Putting a donkey sign over someones head is less than motivating. He offered us a challenge, some of us took it and won. No need to get all nasty about it imo. greetz JC ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
[Flashcoders] Automated test tools?
Can anyone recommend any good automated test tools for Flash? Thanks, Doug ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
RE: [Flashcoders] AS3 Mouse suggestions?
How about
if (not blocked by mushroom)
playerSpeedX = this.mouseX - previousX ;
else
playerSpeedX = 0 ;
thisPlayer.x += playerSpeedX ;
Same for playerSpeedY. This should behave like #1 in the open field and #2
when you run into a mushroom.
Not blocked by mushroom would be something like looking to the left/right
of previousX depending on where the mouse is now.
Doug
-Original Message-
From: Martin Scott Goldberg [mailto:[EMAIL PROTECTED]
Sent: Thursday, May 17, 2007 2:39 PM
To: flashcoders@chattyfig.figleaf.com
Subject: [Flashcoders] AS3 Mouse suggestions?
Hey all, back again.
I'm doing a remake of centipede, and am looking for suggestion on the mouse
tracking routine (in as3).
The enivronment: The player is of course at the bottom of the screen, and
can only move up a specific distance. He may be blocked by mushrooms in
this area as well.
Speficially, I have two ways of player motion with the mouse I've tried and
neither one is 100% accurate:
1) Set the player graphic equal to the mouse reading:
thePlayer.x = this.mouseX;
thePlayer.y = this.mouseY;
This is the same as thePlayer.startDrag(), just chose to go this route.
Player tracks the mouse motion perfectly this way of course.
Then the code checks for mushroom collision, which stops the player
motion.
The issue I'm having is, whenever the player comes in contact with
a mushroom in the lower player movement area, it's supposed to stop
dead, forcing the player to move around it. With this method though,
it stops for a second, but then skips over the mushroom once the mouse
moves past it. Likewise, it creates a sticking at the upper, lower
right, and left boundries since it sits there until the mouse enters
back in to the player zone.
2) Record previous mouse motion in x and y, and compare it to current. If
its moving right, move the player right 1 place. Mouse moving left,
moving player left one space, etc.:
if (previousMouseX this.mouseX)
{
thePlayer.x += playerSpeed;
}
else
{
thePlayer.x -= playerSpeed;
}
And similar for y direction. Now, this code works perfect with the
mushroom obstruction dectection. But I'm having the opposite issue
from the first code: The mouse tracking makes it harder to move in a
straight line, and the mouse moves out of the stage very quickly,
being out of proportion to the rate of the player motion. Upping the
playerSpeed of course doesn't help, that just makes the player graphic
jump around to quick.
If anyone on this list that's played around with these types of issues
before has an suggestions, I'd greatly appreciate it.
Marty
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[Flashcoders] How to call a global method like trace--not the class method?
We have a class used in a lot of code that has a trace method in it:
class Debug {
public function trace(str:String):void { .. }
}
Now we'd like to call the regular trace method from within that class, but
all of our efforts call to the class's trace method.
In C++ you use :: to indicate a global method so it would be ::trace().
Is there anyway to do something similar in ActionScript? Obviously, we
could rename our method to something else but that would mean changing a lot
of existing code.
Thanks,
Doug
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RE: [Flashcoders] Javascript SetVariable -- when does Flash seethechange?
Thanks JD. That helps to explain the behavior we're seeing. Doug -Original Message- From: John Dowdell [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 24, 2007 10:33 PM To: flashcoders@chattyfig.figleaf.com; flashcoders@chattyfig.figleaf.com Subject: RE: [Flashcoders] Javascript SetVariable -- when does Flash seethechange? The browser is a big variable in latency of message-passing. You can confirm that many SWF will run at different rates in different browsers. The NPRuntime API is now implemented pretty well in today's popular browsers, but the size and timing of permissible messages may vary among implementations. http://www.mozilla.org/projects/plugins/npruntime.html In this case, though, it looks like you're using the old javascript: pseudo-URL, and then polling immediately for a result. It may be better to wait a frame or two, or an interval, before checking whether the plugin-to-browser and browser-to-plugin communication cycles have finished. I don't know how many browsers would stop the plugin's execution during the attempted cross-app communication. jd/adobe ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
[Flashcoders] Javascript SetVariable -- when does Flash see the change?
We have a piece of JavaScript like this:
swf.SetVariable(_level1.myvar,myvalue) ;
This JS code is triggered by a piece of Flash code that is executed when the
SWF loads. However, it appears that the variable is not immediately set:
// Called at load time for the SWF
getURL(javascript:doSet()) ;
trace(_level1.myvar);// Reports nothing
But waiting and tracing the variable's value later seems to work:
this.onEnterFrame = function() {
trace(_level1.myvar) ;// This prints correct value
}
Can anyone confirm this behavior? Is there some delay here (e.g. JS takes
100ms to respond) or is that the value is set when the movie clip's timeline
starts up and not until then?
It's all just a bit mysterious...
Doug
P.S. This is Flash 6 code, running in Flash player 9. Browser is Firefox or
IE 7, both behave the same.
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RE: [Flashcoders] One more AS3 question!
Ben you're doing the right thing by having MyClass contain the clip you load rather than extend it. You can't cast a MovieClip (or any object) to a new type that's lower in the class hierarchy than the original object. Doug -Original Message- From: ben gomez farrell [mailto:[EMAIL PROTECTED] Sent: Monday, April 02, 2007 9:11 AM To: Flashcoders mailing list Subject: [Flashcoders] One more AS3 question! So, I was wondering if there's anyway to do this I have some graphics in my SWF. I'm embedding them and compiling with the Flex SDK. The graphics are coming in as MovieClips, but I want a little more functionality, so I'd like to extend the clip and encapsulate that additional functionality in a class. I've discovered the magic of typing something as I can bring in a movieclip and do a var mynewsprite:Sprite = mymovieclip as Sprite. But I actually want to type something up. With type as I can only type something as something the object extends from. I can type a movieclip as a sprite or a display object. I want to take my movieclip instance from the library (I don't want to specify a class name, because I'd prefer to avoid the Flash alpha compiler and just do everything in the Flex SDK). I want to bring that movieclip onto the stage and magically make it a MyClass movieclip (where MyClass extends movieclip). For now I'm just working around it by passing it into MyClass, and not making MyClass extend anything, just keeping the movieclip as a variable to use in the class. Anyway, I know I'm being really picky (don't want to specify a class, don't want workarounds), it's really for learning purposes rather than I need this done right now!!! So anybody know how to turn a movieclip into an extended movieclip through code? ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
RE: [Flashcoders] Confused about accessing nested movieclips in AS3
Ben, We ran into the same problem with Embedded clips and couldn't find a solution. However, if you save as an AS3 SWF through Flash 9 alpha, and then load the clip dynamically you will get a MovieClip back. Then use getChildren to pull out any subclips you need access to, as you described. If you save it as a Flash 8 SWF (AS2) and load that you get a AVM1Movie. Still a display object but very restricted what you can do with it. It seems basically you can play it and that's all--so it's more like an animated GIF than something from Flash. Best to stick to Flash 9 (AS3) SWF's. Doug -Original Message- From: ben gomez farrell [mailto:[EMAIL PROTECTED] Sent: Thursday, March 29, 2007 1:03 PM To: flashcoders@chattyfig.figleaf.com Subject: Re: [Flashcoders] Confused about accessing nested movieclips in AS3 I just figured it out, but now I have a new question. There's actually no code except for stop(); and the instantiation code in the actual Flash file. I took all this out, and it doesn't seem like a big deal to just convert the code. It's also a small project, so it's not going to be a big deal to change some of the syntax and type all my variables. I actually am upgrading because I want to use the byteArray class to save out a JPG. Anyway, I've gotten so far as to finally figure out that I need to access the nested clips through the displayobject class by using getChildren, or getChildAt, or getChildByName. My battle now is that I can't figure out why things are embedding the way they are. I'm embedding the assets through a compiler directive: [Embed(source=assets.swf, symbol=gui_mc)] Even though it's a movieclip in the Flash Alpha, it won't type in the Flex SDK as a movieclip. The error says it's displayobject. I can actually get away with typing it as a Sprite. And then I can access it's children if I say if I type the main movieclip as a sprite. The nested clips on the other hand I can't type as anything but a display object unfortunately, which means I can't access it's frames. So that's what I'm clueless on now! I've tried exporting out of Flash Alpha as AS2 and AS3, but I can't type things as a movieclip no matter what I do. Thanks! ben Steven Sacks | BLITZ wrote: If you're not using absolute strict typing and everything that AS3 has (display, addChild, etc.), then you're gaining no benefit because Flash will just kick down to VM1. IMO, you should either rebuild it from scratch in AS3 style (using sprites, display objects, etc.) or leave it as AS2 and save yourself the headache. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of ben gomez farrell Sent: Thursday, March 29, 2007 11:32 AM To: Flashcoders mailing list Subject: [Flashcoders] Confused about accessing nested movieclips in AS3 Hey everyone, I've been working with AS3 for a bit, and been kind of avoiding this problem till now, but I've converting an AS2 project which has some nested clips, and I'd rather not change things! So basically the question is how do I access nested clips? Before in AS2, I'd say myclip.nestedclip.othernestedclip. But now the problem I have is that once I get a clip on stage I can't drill down to it's children with dot syntax. It gives an error that the nested MC is an undefined property. I suppose I could create a class for myclip that exposes it's nested clips as public variable - and do that for each nesting level, but that's a lot of work. I also tried declaring it in my main class as private var myclip.nestedclip:MovieClip, but of course that's bad syntax. If it matters, I'm exporting my assets out of the Flash 9 Alpha as a Flash 9 AS2 movie. (I tried AS3, but the ability to specify a linkage ID went away). Then I'm embedding the movieclips I need with the [Embed] tag through FlashDevelop and sending it over to the Flex 2 SDK compiler for output. Anyway, this all works, and my stuff appears on stage, but I just can't get access to the nested clips! thanks! ben ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf
[Flashcoders] Anyway way to capture a SWF as a bitmap?
Anyone know if there's a way to draw the contents of a SWF to a Bitmap/BitmapData object within Flash? I have a SWF that involves lots of complex rendering steps and I want to be export it as a bitmap. The export part should be fine (using a server to actually save the file) if I can figure out how to get it into a BitmapData object so I can call getPixels() on it. Anyone have any ideas? Doug ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
RE: [Flashcoders] Anyway way to capture a SWF as a bitmap?
Thanks to everyone who pointed out the bitmapData.draw() method! I had seen that in passing but didn't realize that IBitmapDrawable supported all display objects. Thanks folks--that should do nicely. Doug -Original Message- From: Hans Wichman [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 21, 2007 8:48 AM To: flashcoders@chattyfig.figleaf.com Subject: Re: [Flashcoders] Anyway way to capture a SWF as a bitmap? Hi, you mean something like this: var bitmapData1:BitmapData = new BitmapData(200, 200, false, 0x00); bitmapData1.draw(myMC,new Matrix()); ? greetz JC On 3/21/07, Douglas Pearson [EMAIL PROTECTED] wrote: Anyone know if there's a way to draw the contents of a SWF to a Bitmap/BitmapData object within Flash? I have a SWF that involves lots of complex rendering steps and I want to be export it as a bitmap. The export part should be fine (using a server to actually save the file) if I can figure out how to get it into a BitmapData object so I can call getPixels() on it. Anyone have any ideas? Doug ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
[Flashcoders] AS3 ApplicationDomain example fails to compile
Does anyone have a simple example of compiling AS3 classes into one SWF and loading and accessing them from a second SWF? The example from Programming ActionScript 3.0 showing how to do this doesn't seem to compile: http://livedocs.adobe.com/flex/201/html/wwhelp/wwhimpl/js/html/wwhelp.htm?hr ef=Part5_ProgAS_155_1.html With Error: Type was not found or was not a compile-time constant: Greeter as soon as the loaded class is referenced. Doug ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
RE: [Flashcoders] Number -- how good for use as an integer?
Thanks guys for the responses. I'm actually not concerned with arbitrary precision just storing a 32-bit int (like a database key) and retrieving it accurately. I guess the only safe way in AS1/AS2 is to do the whole Math.round(value+0.01) thing. Doug -Original Message- From: Jim Cheng [mailto:[EMAIL PROTECTED] Sent: Monday, March 05, 2007 4:35 PM To: flashcoders@chattyfig.figleaf.com Subject: Re: [Flashcoders] Number -- how good for use as an integer? Douglas Pearson wrote: Can someone clarify whether Number is actually just a simple wrapper round a double precision floating point value? Is this a problem with Flash? If so, any solutions? Internally, it's a 32-bit single precision float and doesn't play well if you need arbitrary precision integer manipulations. You can see the link that Mick recommended for a longer discussion of this from Adobe. This is a fairly common problem across many programming languages. As such, most developers needing such functionality (e.g. for financial, scientific or cryptographic usages) resort to libraries providing for arbitrary precision integer storage and operations. While I don't know of any ActionScript specific libraries for this, there are several that have been written for Javascript and shouldn't be too difficult to port if you're so inclined. Among others, see: http://www.leemon.com/crypto/BigInt.html http://www-cs-students.stanford.edu/~tjw/jsbn/ Jim Cheng effectiveUI ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
[Flashcoders] Number -- how good for use as an integer?
Can someone clarify whether Number is actually just a simple wrapper round a double precision floating point value? The reason I'm asking is I'd like to know how accurately Flash can store integers. With AS3 there's a true int type added but in AS2 how reliable is Number at storing and retrieving integer values? The problem here, of course, is that a floating point value can't exactly represent integers (you get a lot of 1025.01 values instead of 1025). Is this a problem with Flash? If so, any solutions? Doug ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
RE: [Flashcoders] Flash 9 AS3 Resource Management
I'd be interested in tools for monitoring this too. To avoid holding onto objects through addEventListener, have you tried the weak reference option? We've been using that increasingly as the default way to add listeners, so objects don't hang around when we think we're finished with them. Doug -Original Message- From: Kalani Bright [mailto:[EMAIL PROTECTED] Sent: Wednesday, February 28, 2007 2:56 PM To: flashcoders@chattyfig.figleaf.com Subject: [Flashcoders] Flash 9 AS3 Resource Management Hi everyone, Does anyone have some tips or tutorials on how to handle resources and performance issues in flash. I have more of an application than a flash file and things start to slow down after a while. I'm thinking the garbage collection mechanism in flash isn't deleting the objects which aren't needed anymore. I was able to improve performance somewhat by overriding addEventListener to put the event listener into an array of objects which I then reference values from. When a SuperMovieClip object is removed from the stage an event listener for that event goes through the array and removes each of the listeners. If it is added to the stage again all the listeners are re-added from the array. Theres some other slow downs I can't account for. It would be nice if there was a debugging tool or something so I could see what types of objects are in memory at any time so I can see whats not getting deleted and what keeps taking up resources. I am especially interested in however strategies for dealing with the issues of instantiation, deletion, events, for resource optimization. Thank you, thank you, (thank you) Kalani ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
