ActionScript 3.0 :: Asynchronous Keyboard Controls - Stop Listening To An Event As Soon As Another Event Has Been Dispatched?
Nov 1, 2009
i have a question to ask about asynchronous key controls This was what i did
[Code]...
and i checked with [URL]...?newspage=6249 and it looked more or less the same, so why is it that when i move my character and when i hold down a key, it just keeps on listerning to that keypress event listener, instead of just executing the other event. So say, i tap left and after which i tap right, it will work just fine, but if i hold left and tap right, the event listerner will still be listening to the left key. So, i was wondering could anyone point me in a direction as to how should i make my code stop listening to an event as soon as another event has been dispatched?
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Similar Posts:
Jul 8, 2011
I am doing this inside a module containing viewstacks and their childs.Calling onInit() on creationComplete of module.When I am inside one of the childs of a viewstack of this module and press Enter, it doesnt not invoke the listener function at all (bp inside this does not get hit).
private function onInit():void{
this.addEventListener(KeyboardEvent.KEY_DOWN, keyPressed);
}[code]..........
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May 25, 2010
I want to listen for a custom event dispatched from the document class in a custom subclass. For example, let's say in the document class I have:
ActionScript Code:[code]....
So that the subclass will trace 'Event from document class received' when the 'customEvent' event from the document class is listened by the eventlistener. However, the output is only 'customEvent dispatched', meaning it wasn't heard in the subclass.
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Nov 4, 2011
I have the following situation:I have an event handler, that displays small messages in my application's statusbar.These messages get passes through by dispatching events from custom components.A simple message could be like "HTTP Error" or so.Now, the main event listener, in the main application file, listens to the event dispatched by any custom component,but seems to refuse listening to events dispatched by custom AS classes.Here is my code for the custom event:
package main.events
{
import flash.events.Event;[code]..
So to sum it all up:
- The event listener listens to the custom event dispatched by any custom component.
- The event listener does not listen to the custom event duspatched by an AS class.
Those who wonder, the event really gets dispatched, that's why I added a trace call.
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May 27, 2009
I use an event listener to detect keyboard activity and it is working fine, but when I add a MovieClip to the stage, the event is no more triggered, I need to click on the stage to get it active.The MovieClip fills all the stage, and I tried to add the same event listener to it, but still I need to click on it to get the event listener active.
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Feb 24, 2012
Let's say you have a guestbook in where you constantly update the data pulled from a .txt file, but when someone posts a comment and press the SUBMIT button, you'd like that the data is updated at that moment to make it display faster, but since an already dispatched event is coming to update the data of your guestbook WITHOUT the newly posted comment, a flicker might occur, so you would then like to stop that data from being transferred to your Flash file and rather dispatch a new event to load new data with your recently posted comment. Or maybe you just want to know how to stop an event from any class, either way, you've come to the right place.
Let's use that guestbook as our example. Instead of using an onEnterFrame to constantly update the data, I'd use LoadVars' onData event to retrieve the data, but when that data has been transferred, dispatch another onData event, and make this keep going in a loop:
ActionScript Code:
function updateGuestbook(){
loadData = new LoadVars();
loadData.onData = function(data){
[code]...
and then I have this button to submit my comment to the guestbook (keeping it simple):
ActionScript Code:
submit_btn.onRelease = function(){
loadVariablesNum("somefile.php", 0, "POST");
updateGuestbook();
}
so I call the updateGuestbook function, which will fire another event to load new data, but another event has probably already been fired off already with the old data, and this will cause the guestbook to nudge a bit, flicker, if you know what I mean, because first the old data will load, then right after that, a few milliseconds later, the new data will load, and this will be visible to the eye, and will probably not look good.What you can do, is to stop the previous event, delete it, to stop its data from being received by Flash. To do this, simply use this:
ActionScript Code:
delete loadData.onData;
to delete that event, just as simple as that.
ActionScript Code:
submit_btn.onRelease = function(){
loadVariablesNum("somefile.php", 0, "POST");
[code]...
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Aug 30, 2010
I have built a flash movie that is located here: http:[url]......For some reason after the timeline plays through completly (after the "headshots and potfolios" slide) the listener on the "child and family portraits" button stops listening or responding. Why is that? All the other event listeners are behaving themselves except this one? Here is the actionscript:
McChild.addEventListener(MouseEvent.MOUSE_OVER, fl_MouseOverHandler);[code]...........
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Mar 19, 2012
so i have an event listener a mouse click in a movie clip name "em_contact" i also have an event listener after an animation plays out on an object called contactbtn_mc, How do i tell Flash once em_contact is clicked dont listen for that event any more?
my code is below
em_contact.addEventListener(MouseEvent.CLICK,gotocontactanimation);
function gotocontactanimation(EvntObj:MouseEvent):void {
[code]......
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Jan 3, 2010
The app I want to build is an interactive map for a site I'm designing. In a nut shell, students looking to enter an exchange program should be able to use the map-image (as in, an actual 'map of the world') to preview possible destinations (I've attached an image of the two basic states to clarify).
After an introductory animation, I want a mouse-over to trigger a function that populates the map-image with a series of buttons. I need the buttons to be distributed according to information in an XML file (ie. x/y coords, some information text, and an animation to load upon being clicked). I want each button to call a mouse-over function that loads info data from an XML field and place it in a dynamic text field at the top. Then, I want each button, when clicked, to call a function that animates replacing the map-image with an image of the corresponding travel destination. Finally, I want a button on each image that will clear that image from the stage and call the function that populates the map so the process can start again.
I'm working out of a couple of books on AS3, but I'm a little hazy on how I ought to be constructing this thing. So here's the first place I've run aground: After the intro animation, I want the user to mouse-over the stage and have a second animation play (clearing away the introductory text), and I want the conclusion of the clearing animation to immediately call the map-populate function; but I don't want a mouse-over to have any effect until the introductory animation is finished. Is there an event dispatched automatically at the end of an animation? What is the event listener class?
I'm not sure if I should be storing each of these animations in an independent .fla file or if I should create them on all one timeline and have the program redirect to specific frames.
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Sep 3, 2009
Can event listeners only be added to the class which dispatched the event? I ask because I want to have the logic for the listener on the main class, and the action is dispatched on click from a thumb which is instantiated in a scroller class. Kinda like this:
ActionScript Code:
pseudo code:
class main {
main() {
[code]....
This doesn't work. Why can't the main class listen for an event on the thumb class?
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Aug 24, 2011
what should i do to get chart's data on the click of respective data Legend. suppose i have array [{id:123, label:sales, year:2010},{id:124, label:refunds, year:2010}]for a column chart which has year in x-axis and sales iny-axis.two legend showing labels sales and refund.What i want is to get the whole data (id:123, label:sales, year:2010) on clicking of the legend 'sales'.What should i do? I tried listening mouse click event and itemClick event.
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Jul 7, 2011
I am trying to learn JavaScript and I am wondering whether JavaScript has a event listener just like ActionScript's ENTER_FRAME. Basically, I want this event listener to listen "all the time" not just wait for any particular instance (mouse click, keyboard event) of event.
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Apr 12, 2011
I have editable grids which are 2-way binded to my model. What I want is to validate my data when user edits any cell before it get updated in model. I have applied my validation at ItemEditEnd handler, but, I want to apply validation in between itemEditBegin and itemEditEnd events.
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Jul 10, 2011
What I want to do is create a powerpoint style presentation. But rather than change slides, I have one large "graphic" that I am moving around and zooming into by "motion tweening". Now all I need to do is: (with a keyboard event)
Start the motion tween and then let it play out
Then start the next motion tween and let it play out
and so on...
All I have is this, which allows me to start and stop it when it is tweening, but isn't as effective as it stopping at then end of a motion tween, then allowing me to push a key and for it to go to the next "slide".
Code:
stop();
var isPlaying:Boolean = false;
stage.addEventListener(KeyboardEvent.KEY_UP, keyUsed);
function keyUsed(event:KeyboardEvent){
if (isPlaying){
stop();
} else {
play();
} isPlaying = !isPlaying;
}
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Jul 10, 2011
i've been looking around for answers to my problem to no avail. What I want to do is create a powerpoint style presentation. But rather than change slides, I have one large "graphic" that I am moving around and zooming into by "motion tweening" Now all I need to do is: (with a keyboard event) start the motion tween and then let it play out then start the next motion tween and let it play out and so on. all i have is this, which allows me to start and stop it when it is tweening, but isn't as effective as it stopping at then end of a motion tween, then allowing me to push a key and for it to go to the next "slide"
[Code]...
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Jul 10, 2011
What I want to do is create a powerpoint style presentation. But rather than change slides, I have one large "graphic" that I am moving around and zooming into by "motion tweening" Now all I need to do is: (with a keyboard event) start the motion tween and then let it play out then start the next motion tween and let it play out and so on...
all i have is this, which allows me to start and stop it when it is tweening, but isn't as effective as it stopping at then end of a motion tween, then allowing me to push a key and for it to go to the next "slide"
Code:
stop();
var isPlaying:Boolean = false;
stage.addEventListener(KeyboardEvent.KEY_UP, keyUsed);
[Code].....
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Apr 23, 2009
When game starts, the car runs automatically. Then we click the SPACE button, movement of car stops. And the door of structure near car is available to CLICK.
But in coding I got this error code:
TypeError: Error #2007: Parameter listener must be non-null.
at flash.events::EventDispatcher/addEventListener()
at shfg_fla::MainTimeline/key_pressed()
This is some part of my game code...
case Keyboard.SPACE :
removeEventListener(Event.ENTER_FRAME,car_movement);
--street_mc.bluehome_mc.door_btn.addEventListener(MouseEvent.MOUSE_DOWN,door_ready)
[Code]....
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Jul 4, 2009
I have a question about making a function for two different kinds of event. It's not critical but I would like to reduce my lines of code and just be more efficient. Basically I have a button on the stage called "Enter". I also want the user to have the option of hitting the enter button. I don't have a problem making these two separate handlers for these events (i.e. one handler for the KeyboardEvent and one handler for the MouseEvent):
[Code]...
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Oct 24, 2011
how can you switch the mouse event with keyboard event in the folowing example:
Code:
var qno=0;var rnd1; var rnd2;
tick.visible=false;cross.visible=false;
var right_answers=0;var wrong_answers=0;
[Code]....
i know that u have too define key up and down functions and in the beginnig give the keys we are using the false value, but how to make it that after i pess of a key you cant press in again unless you go to the next question that is the enable_disable in the following code. How would that function looked in case of keyboard event
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Sep 8, 2011
I am writing test cases to test function with flexunit 4. I am using aysnc method.
But when I add two or more asyncHandlers to the instance. I meet the problem: Error: Asynchronous Event Received out of Order.
Code snippets:
[Test(order=1, async, description="synchronize content on line")]
public function testSynchronizeContentOnline():void
{
var passThroughData:Object = new Object();
[Code].....
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Dec 15, 2010
I have a strange problem: i assigned the following variable: public static const SERIES:String = "series"; then in the same class i have the following function:
[Code]...
Now for some reason the event does not get dispatched, the traces i placed before and after the dispatchevent both get triggered. why the dispatchevent doesnt work?
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Aug 19, 2010
I'm getting this weird glitch where the added_to_stage event seems to be dispatched twice when I construct my object.Now I know that my constructor is not being called twice cause I traced a string before the event listener, and it only traces once but I traced the same string within the listener handling function body and it traced twice.
Here's the code:
Code:
package com.berubegraphics.martinemartell
{
import flash.display.MovieClip;
import flash.display.Sprite;
[code]....
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Jul 22, 2009
I'm testing some event dispatch code in a Flex app, using FlexUnit's addAsync method for testing that events are dispatched. Great so far, I can ensure that at least one event was fired. However, I want to be a bit more detailed; I want to ensure that exactly the set of events I'm expecting are dispatched. Is there a useful test pattern (or, even, different test framework -- I'm flexible!) to accomplish this?I tried this code, but it doesn't seem to get invoked the second time:[code]
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Apr 22, 2011
I have this slight problem with the event ADDED_TO_STAGE. The listener is launched twice so I figured the event is dispatched twice.
Here is my .fla code :
Code:
var section:SectionStructure = new SectionStructure("xml/list.xml")
addChild(section)
the SectionStructure code :
[Code].....
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Nov 17, 2010
How would I check if an event has already been dispatched or not?
Is it as simple as checking the "target" property if it's null or not? Or are there cases when the target will be null, but it still has already been dispatched?
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Apr 22, 2011
I have this slight problem with the event ADDED_TO_STAGE. The listener is launched twice so I figured the event is dispatched twice.
Here is my .fla code :
var section:SectionStructure = new SectionStructure("xml/list.xml")
addChild(section)
The Section Structure code :
[...]
mainHolder = new MovieClip;
mainHolder.addEventListener(Event.ADDED_TO_STAGE, displayObjects);
addChild(mainHolder);
} private function displayObjects(pEvent:Event):void {
mainHolder.addChild(sectionMenu);
}
[Code] .....
The output panel displays "test A" once and "test B" twice. I fixed the problem by adding this little line on the opening of the function createButtons :
menuHolder.removeEventListener(Event.ADDED_TO_STAGE, createButtons);
I read here and there that the event ADDED_TO_STAGE is dispatched when children are added but my problem remains even when I comment everything below this line :
trace("test B");
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Sep 2, 2010
Is there a way how to check if UPLOAD_COMPLETE_DATA event was not dispatched after COMPLETE in Flash?
I'm working on file uploader. It uploads file after file - after COMPLETE next file starts uploading - this is repeated for every file. On last file on COMPLETE if there is no next file allCompleteHandler is dispatched and if some errors occurs it shows that errors at once trough javascript to the user.
I handle that errors in javascript - it stores every error to variable in javascript and after all completed it shows that errors.
[Code]...
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Sep 22, 2010
I've successfully integrated SWFAddress deep linking on a site I'm working on. However I'm having a problem whereby SWFAddress CHANGE event isn't dispatched when you click an anchor tag in the htmlText of a textField. The browsers address bar is successfully updated, just no CHANGE event.
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Oct 18, 2009
I'm having trouble getting a custom event to fire properly.I have a main class which creates a dynamic textbox (using a custom textfield class (see below)).Another class called book (and extends sprite) , has a method called updateBox() which I want at runtime to update the textbox with some data sent by my custom event which the book class dispatches.The problem is that when the event is dispatched (and I see in the debugger that it does reach the dispatch line) the listener never fires...i.e., the updateText function is never reached, and hence the text box is created and assigned the INIT value but is never updated again..
Here is a scaled down version of my code:
Main Class:
ActionScript Code:
package {
import flash.display.Sprite;
[code]....
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Feb 21, 2012
I've been experimenting with writing my first custom event So I have a MovieClip class in the library called "Curtains". It plays an animation and at the end of the animation I have the
code:
stop();
dispatchEvent(new Event("closed"));
[code]........
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