Actionscript 3 :: External Class Keyboard Listener?
Oct 10, 2011
I was trying to make a tank game in which I can move the tanks, let them shoot each other, etc... I insist on creating external classes with Flash Pro cause I am used to OOP language like Java. I created a Tank class which represents all the tanks. Here is the code of this class:
[Code]...
The problem is that the action listener seems never get called when I press any keys. the trace() is not called. But I tried to add a mouse listener just to test and it worked. So I guess its the Keyboard event listener class's problem? Everyone I see on the web uses stage.addEventListener(KeyboardEvent.KEY_DOWN, move) approach.
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May 29, 2009
I am working on a small section of my game and am attempting to detect key presses from an external class but I cannot get it to work. This code worked just fine when within the document class but now it's unresponsive. I'm not getting any errors, simply no activity whatsoever.[code]...
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May 29, 2009
I am working on a small section of my game and am attempting to detect key presses from an external class but I cannot get it to work. This code worked just fine when within the document class but now it's unresponsive. I'm not getting any errors, simply no activity whatsoever.Here's the applicable code:
My document class:
Code:
package
{
import flash.display.MovieClip;
public class Engine extends MovieClip
[code]....
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Feb 6, 2009
I am using an external 'Animation' class to handle all animations in a project. I would like to register event listeners to listen for tween completion - how do I go about this?
function in Animation class:
Code:
public function SlideOut(target, tx){
var slideTween: TweenMax = new TweenMax(target,.5,{x: tx,y:0,ease:Back.easeIn});
}
[Code].....
Obviously, mySlide.addEventListener(Event.COMPLETE, transitionComplete) doesn't work. I've tried including the name of the instance of tween too but no dice. I could write my own event within the animation class and dispatch it via another function but there must be a more elegant solution?
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Jun 10, 2010
Any way to change a keyboard listener I have set up, so that instead of reacting instantly when it hears a key_UP event, it waits to see if there's another KEY_UP within, say 50ms?
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Oct 11, 2011
I want to monitor each charachter in a text box when a user inputs, eg. there name. If they type John, I want an image to dislplay J . o . h. n under the text box. I cannot seem to figure out how to monitor each letter individually. I could only get it working if i use seperate input boxes, so a input box for j, o, h & n as an example.Could someone point me in the right direrection. Here is the code Im trying to use at the moment.
Code:
////////////////111111////////////////////
firstname.addEventListener(KeyboardEvent.KEY_DOWN, key_pressed);
[code].....
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Jan 29, 2010
I am trying to write a keyboard event listener so that when I press a specific key it controls the time line. Below is working code for when I press "enter". How would I make it work if I pressed "Q"?
[Code]...
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May 3, 2010
Just using the script below to output the key that is pressed in the output but I get the "Cannot access a property or method of a null object reference." warning on the addEventListener line, which I assume is because of the "stage" var. How do I correct that?
Code:
<?xml version="1.0"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
backgroundColor="#123456" creationComplete="init();">[code].............
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Aug 25, 2011
I have a flash app that I would like to listen for a string of characters being typed on a keyboard. If a user typed in apple as an example that would either be correct or incorrect, and if they typed it in uppercase or lowercase or upper and lower it would still equate to true. Here is the tricky part, the string is not being typed into a textfield or anything like that, it must just be typed and after flash sees the correct keys pressed in the correct sequence it will fire a function.
I have seen this done before in a situation where a website had a background administration application, and when browsing the site you could just type admin, and a window would pop up asking for a username and password, so that is almost exactly what I want. Because of this I figured I would try to replicate the admin application first as it should be simpler
This is what I have thus far
stage.addEventListener(KeyboardEvent.KEY_DOWN, keysPressed);
var keyCatcher:Array=new Array(); var keyCatchNew:String;
function keysPressed(e:KeyboardEvent):void{
if(e.charCode==65 || e.charCode==68 || e.charCode==77 || e.charCode==73 || e.charCode==78 || e.charCode==97 || e.charCode==100 || e.charCode==109 || e.charCode==105 || e.charCode==110){
keyCatcher.push(String.fromCharCode(e.charCode));
[Code] .....
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Mar 1, 2009
Can I use a generic Event listener for both mouse and keyboard ?Something like this ?
Code:
private function controlAction(e:Event):void {
if (e is KeyboardEvent) {
[code].....
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May 5, 2009
I have a basic presentation which will have basic interactivity for the user. i.e. The user clicks on a play button, and the presentation plays, the user clicks on a back button, and the playhead steps back through the animation. I also want to provide keyboard shortcuts to do the same thing, so the user can also hit the spacebar to play the presentation, or press the left arrow key to step back, etc.
I've successfully gotten both the click interactivity and keyboard interactivity to work... but only separately, when I try to add them to the same file, it breaks. I also think I've figured out why. The problem seems to be that if I click a button that is only on the timeline for SOME of the frames, the KeyboardEvent listener no longer triggers.
I have a rewind button that will jump the playhead to the start of the presentation. However, from a use design standpoint, I really only want the rewind button visible/clickable if the user has advanced a bit into the presentation (i.e. frame 2 or beyond) because having the rewind button active on the first frame of the presentation can be confusing because it makes it appear to the user as though they can still rewind further, even though they've reached the beginning. I want to take a similar approach to a play button... as long as there are frames to play, the play button should be active; however, once you reach the end, the play button should dim down and not be clickable anymore, which serves as a visual cue to the user that they have reached the end of the presentation.
So, previously (in AS 2.0) this was not a problem. On the frame I wanted the rewind button to be "disabled", I would just turn the Button Symbol into a Graphic Symbol which would make it unclickable and remove any script, and then I would dim the Alpha of the Graphic. So, on frame 1, the rewind button would actually just be a transparent Graphic, and then once the playhead goes to Frame 2, it would be a Button symbol that could be clicked.
This technique apparently will break the new event model in AS3. If you look at the FLA I have attached (just change the extension), you can see that when you first "Test Movie"... any keyboard press outputs a trace statement that shows which key was pressed. However, if you hit the play button to play a little of the timeline, and then click the rewind button (instance name of rewind_btn) which jumps the playhead to frame 1 (where rewind_btn doesn't exist, because it's a Graphic now).
Now my Keyboard listener doesn't trigger!
I've even tried testing to see if the KeyboardEvent listener still exists by using the hasEventListener("keyUp"), and it returns as true, so the listener is there, it just doesn't trigger anymore
How would I go about solving this problem? Because I can see this being a huge issue in a more complicated project, because I could see scenarios where you only want certain buttons to exist on certain frames
[Code]...
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Aug 24, 2009
I'm trying to creat an "icon carousel", that slides across in the direction given by a keyboard input (arrow keys).
[Code]...
(icon refers to whatever instance name I chose for the specifc icon/layer)
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Nov 23, 2011
I'm having what's probably a very basic problem, but I keep getting this error message: Error 1079: Label must be a simple identifier. I'm trying to have AS navigate through a panorama I made in photoshop and turned into a movieclip (panorama_mc). I want it to move from end to end (registration point is in the center) without going past the end of the photo on either side. I also want to make sure that when you get to the end, you can navigate back in the other direction.
[code]...
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Jul 5, 2011
The keyBoard event listeners call on the rotate and unrotate functions and based on the key inputs(A and D) will implement either of the functions and rotate the image or return it to the original upright position. However, I haven't been able to get the function to work. When I press the A or D keys on the keyboard nothing happens. I even put trace() in one of the functions to see if the function will even be implemented but I don't get anything. I put in my Scripts below. Why are the functions not working? Do the eventlisteners fire or are there conflicts? I'm not getting any error messages.
ti.border = true
ti.addEventListener(TextEvent.TEXT_INPUT, onInput);
function onInput(event:TextEvent):void {
if(ti.text.search('a')!=-1) load_image("http://i54.tinypic.com/anom5d.png", "ottefct");
[code]....
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Sep 6, 2009
Is there a reason why a keyboard event listener would not work if the flash is embedded in an HTML? The rest of my game is running fine in the background, but I can't launch the movieClip "nextCar." My code is below, if that makes any difference...
function goNow (event:KeyboardEvent): void { thisOtherKey = event.keyCode; if (thisOtherKey == 32) { nextCar.gotoAndPlay(2); parkingQue.play(); tries++; }}stage.addEventListener(KeyboardEvent.KEY_DOWN, goNow);
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Jul 5, 2011
I have this keyboard event listener to listen for key_Down of letter A and D but I end up with and error:
1119: Access of possibly undefined property A through a reference with static type Class.
When I use
function rotate(evt:KeyboardEvent):void
{
if (evt.keyCode==68) {
evt.currentTarget.rotation = 90 }
[Code].....
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Jul 6, 2011
The keyBoard event listeners call on the rotate and unrotate functions and based on the key inputs(A and D) will implement either of the functions and rotate the image or return it to the original upright position. However, I haven't been able to get the function to work. When I press the A or D keys on the keyboard nothing happens. I even put trace() in one of the functions to see if the function will even be implemented but I don't get anything. I put in my Scripts below. Why are the functions not working? Do the eventlisteners fire or are there conflicts?[code]...
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Jan 28, 2010
I have two scenes in flash - when you go to scene 2 there is a eventListener attached to the stage to move a movieclip. When I test the movie the only way the keyboard listener seems to work is if I click on the stage first, then the object will move. Is there a solution to this. The code I am using is:
[Code]...
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Sep 23, 2009
Atm im putting a a game i build into my main flash app.Everything works fine except the keyboard listener.unny.AFTER a mouse click on the 'loaded' swf the keys 'arrow UP' + 'arrow DOWN' start working.I created already a script that loads the listeners IF they are not loaded yet, but i think thats not the problem. Same situation.After clicking on the movie it starts to work, but apparently the listeners are already applied. All other listeners work besides the keyboard listeners.Stand alone(the game swf running by its own) the game works perfectly!btw the game is importing a main document class.
Code:
this.addEventListener(KeyboardEvent.KEY_DOWN
var keybListenerLoadedUp:Boolean = false;
[code].....
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May 11, 2006
I've done a class to be able to listen to the event for a CLASS not on an instance.
Code:
class net.webbymx.events.XClassEventListener {[code]....
why did I do this.It cames with my rugby game.I have player in two teams. When a player throw the ball I want the other teammate to act like "wait for ball" and the opponent like "seek for ball". Plus I'm lazy (and I don't want to register the listener for each instance of the player I'm creating). So this class is made to be able to handle as many instance of a class I want without adding a listener on each of them. I'm just creating a global listener on the class and then I will be able to receive dispatched event for any instance of this class .so in my team I can do
Code:
XClassListener.initialize(this);
this.addEventListener("throw", "net.webbymx.game.Player", "wait");
and in my opponent team I can do
Code:
XClassListener.initialize(this);
this.addEventListener("throw", "net.webbymx.game.Player", "seek");
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Apr 1, 2011
I have a document class called Main.as In the class constructor I have the following listener:
enter code here
var listeningFORModeChangeToStudent:Sprite = new Sprite;
listeningFORModeChangeToStudent.addEventListener(TellAllModeChangeToStudent.STUDENT,exp);
addChild(listeningFORModeChangeToStudent);
[code]....
In a third class I make a call to the despatcher in the previous class:
enter code here
var ThisTellAllModeChangeToStudent:TellAllModeChangeToStudent = new TellAllModeChangeToStudent;
ThisTellAllModeChangeToStudent.tellAllModeChangeToStudent();
I have trace statements in eveything and from this I know the despatcher in TellAllModeChangeToStudent is being called.The problem is that the listener in the main.as is not calling the function exp.I cant see why and I dont know how to check if the listener is actually seeing the dispatch event?
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Mar 29, 2009
Now I have 2 movieclip. Mc1 & mc2. I planned to to make mc2 do certain animation and user must input the key within the progress animation of the mc2 in order prevent something happen
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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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Sep 27, 2009
I made a symbol and attached a class to it, and now I want to move the symbol according to which keyboard-button I press.. I've googled several times, and all resulted in some vaque tutorial from which I couldn't underatdn anything at all.
My class structure is:
ActionScript Code:
package {
class declaration{
[Code].....
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Jun 6, 2009
seem to have trouble getting a keyboard event within a class to work, I have an ENTER_FRAME event which works fine, but the keyboard event never gets called.[code]
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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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Aug 12, 2010
I finally found a way to exactly position my External SWF on the main stage. Here is the Actionscript I placed on an empty layer:
Code:
this.createEmptyMovieClip("externalSWF",1);
externalSWF._x=550;
[code].....
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Aug 1, 2011
I have some AS2 code for responding to keyboard input - it was great because it added friction, thrust, gravity etc... ie: it made the movements very real and added playability which is key in engaging players. On passing it into classes for OOP I don't seem to have got it right. maybe somebody knows a nice tutorial for the same.It was Emanuel Feronato's tut in AS2
RocketMainDocClass
package import flash.display.MovieClip; import flash.events.*; import flash.ui.Keyboard; public class RocketMainDocClass extends MovieClip{
[code].....
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Aug 26, 2011
I have looked at other questions and online but still cant figure out where I am going wrong I am adding 2 events to a externally loaded swf
One works, and one doesnt?!? the function names are correct so I can see what Im missing
my_loadedSwf = loadEvent.currentTarget.content as MovieClip;
my_loadedSwf.addEventListener(Event.ENTER_FRAME, my_loadedSwf.enterFrameHandler);
my_loadedSwf.addEventListener(KeyboardEvent.KEY_DOWN, my_loadedSwf.myOnPress);
addChild(my_loadedSwf);
[Code]....
set my_loadedSwf.tabEnabled = true; and it now works great
EDITS TO THE ABOVE Actually, it isnt working, I have to press 'tab' to take control of the player
ANSWER
I removed the tab index code and added focus to the loaded swf
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Oct 30, 2010
Here's my code: [URL]
I'm using Flash Develop.
The trace command never gets executed. Why?
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