Flash :: Using A Custom Event To Listen For Collisions?
Feb 13, 2012
I'm new to flash and programming in general but am learning it to make games. I'm currently messing around with hit detection and its not to hard to test in the game tick ( fired from onEnterFrame). What I'm wondering is if it would be possible / useful to create a custom event that i can listen for. And make the eventListener hear when a collision happens. Also would this be better or worse for the cpu than testing the collisions of lots of enemies on a screen?
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Jul 17, 2011
I'm using a electronic device to dispatch events within AS3.
short explanation: -->
Think of these events as a KeyboardEvent.My point is to dispatch an Event (like a Key that is being pressed) so I can listen to this event on EVERY Class I need to.I'm not sure how to instantiate or listen to these events correctly =/
I mean: I want to be able to listen to the key that is been pressed as if that was a global event every Class can receive...
long explanation: --> I'm doing something like this:
1) created a (main) Class that extends a Sprite.
2) created a class (KeyboardInput) that extends the main class.
3) created a class (KeyMap) that extends EventDispatcher.
4) created a class (HomeScreen) that extends a Sprite.
My FLA file is associated to the KeyboardInput Class.This Class creates a listener for the KEY_DOWN KeyboardEvent and instantiate the KeyMap Class that dispatches a CustomEvent:
stage.addEventListener(KeyboardEvent.KEY_DOWN,function(evt:KeyboardEve nt):void { keymap = new KeyMap(); keymap.setKey(String.fromCharCode(e.charCode)) });[code].....
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May 2, 2011
I'm having the following problem: I've implemented a custom headRenderer for my DataGridColumn. The idea is to have a dropdown menu when clicked on the column header. The problem is I don't know how to add a listener or pass a variable to the renderer since the renderer class is instantiated by the ClassFactory.
The renderer class:
<?xml version="1.0"?>
<!-- itemRenderersdataGridmyComponentsRendererDGHeader.mxml -->
<mx:HBox xmlns:mx="library://ns.adobe.com/flex/mx"
[Code].....
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May 4, 2011
I have a repeater component with custom event. My repeater components fires custom event holding data. My need is to dispatch event so other repeater components can access data from dispatching component.
Edit: Added whole stuff here.
<!-- AttributeMapping.mxml -->
<?xml version="1.0" encoding="utf-8"?>
<mx:Canvas xmlns:fx="http://ns.adobe.com/mxml/2009"
[Code].....
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Oct 24, 2010
I have movieclip which contains child movieclip. when child movie clip finish to play i want to run a function in a parent movieclip. so I made a custom event dispatcher in the first frame of the child movieclip:
[Code]...
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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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Mar 10, 2012
I know the difference between the two, but I never felt the need to use the bubbling feature. If I want to listen to an event from a deeply nested children, I always use the capture phase. Could someone explain to me why I should rather use bubbling, its advantages, and maybe show me a situation in which bubbling would be the only solution?
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Nov 22, 2010
I'm working on a game (my first) where objects touching is A-Ok, but I want to detect overlapping collisions ahead of time, prevent them, and react. This seems like a pretty basic and common thing, such as a character walking along a platform (even though by touching it it's 'colliding'), but of all the many many collision detection tutorials I've looked at, none of them have covered this case--they all assume that objects touching should be indistinguishable from overlapping. I've been using a workaround of a slightly smaller hitbox to use for collisions, but it has issues of it's own that make it not so good. So basically I'm looking to redo my CD from scratch.
So, like I said, I'd like to know how to differentiate between 'touching' collisions and overlapping collisions, but even a way to keep touching collisions from triggering entirely would work.
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Mar 2, 2012
This is NOT duplicate of my earlier post (its is slightly different)But this is similar issue with similar error but its not the same error The error I am getting now is below while dispatching the custom event from my custom component
TypeError: Error #1034: Type Coercion failed: cannot convert events::MapEvent@a74ab51 to flash.events.MouseEvent.
dispatchEvent(new MapEvent(MapEvent.CLICKED_ON_MAP));
Note: The error in my earlier post is giving below error message
Type Coercion failed: cannot convert flash.events::Event@81ecb79 to com.events.ShopEvent
The difference here are two things, the earlier error is while converting flash event to custom event and now this one is while converting custom event to flash event and secondly, I have no clue why it is trying to convert to the mouseevent where I am just dispatching my custom event with proper listeners.
This is my custome event
package events
{
import flash.events.Event;
import ui.map.MapElement;
[code]...
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Dec 11, 2011
public class gallery_folio extends MovieClip
{
var image_xml:XML;
var xml_loader:URLLoader;
public var text_style:TextFormat = new TextFormat("Verdana",10,0x333333,"",null,null,null,null,"left");
public var _style:TextFormat = new TextFormat("Verdana",11,0x333333,"",null,null,null,null,"left");
public function gallery_folio()
[Code]...
when ever i click the menu .the event listen from uiloader and text field.I would like to remove event listener from above.Actually i want to create xml gallery .with lots of images
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Dec 28, 2009
Is there a point of creating custom event class if i dont need to pass custom property with that event?
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Sep 16, 2007
I am trying to have flash listen for a loadClip event when a button mc called portfoliob is released. When the loadClip event is triggered I'd like flash to then create another MC called container2 and load a .swf called pmenu. I understand the logic behind it but for the life of me I can not get it to work.
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Oct 19, 2010
If I plan to implement 100 objects on stage to be listen to mouse and keyboard input, is using "function" call responsive enough? How good does eventlistner work?
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Oct 5, 2010
[Code]....
As you see from the code above I have a loop that loads images on each pass using the same loader. This works, however, it is looping too quick (I believe) and as such the "addBook" function that handles pushing these into an array is pushing them into the array in the wrong order. Two questions: (1) Am I approaching this incorrectly? (2) If not, is there a way to listen to the loader event so the loop proceeds only after the load of that image is complete?
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Sep 5, 2011
I came to some misunderstanding how to use events. LOL. I thought I understand it but as I see I dont.
I've got a Engine document class where Hero is added, and Cannon object too. In body of Hero I need to dispatch event when Hero reaches some point or particularly a pitfall, so I've got static const string to handle it:
[Code]...
but this way I would end up with dozens of handlers in the Engine body class, and I am trying to minimize this class as it is big enough without those handlers. I am stunned and suprised, and I am noob again. Maybe someone will clear out how to get custom events working/... and why only instance of object that dispatches an Event can hear it (my case).
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Dec 2, 2010
How to trigger a custom jQuery event from Flash, passing some data through event object?
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Aug 28, 2011
I am trying to wait for and Event.COMPLETE in another class but my code just jumps through the event listener and executes the following code without waiting for the event to complete so my variable is not being set.[code]
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Apr 2, 2012
I try to make have an EventListener in ItemRenderer but its not working. How to listen to an event inside an ItemRenderer?
----In MainHomeView.mxml----
<fx:Metadata>
[Event(name="myEvent", type="flash.events.Event")]
[Code].....
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Mar 19, 2009
I have two buttons that listeners for the same event that have identical instance names?For example, I have two buttons which have the same instance name: imageOne.Can those identical buttons listen for the same event? I tried, but only one button responds to the event listener .why do I need two buttons with the same instance name that listens for the same event?because I have a looping scrolling panel of thumbnails, and when you have scrolling panels, we all have duplicate panels inside for looping purposes...so since I have to have two identical panels grouped together to do the loop, I have multiple buttons with the same instance name.and these buttons listen for events...now of course I can rename the other half of the identical buttons with different instance nams, but a problem arises when i want to use an if statement to check to see if that image is already loaded.for example, say I image1 is already loaded, and someone clicks identical thumbnail that has a different instance name, ti would be too complex to write an if statemen to determine whats loaded.
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Feb 24, 2011
I know there's been quite a few posts about events, but I've run into a problem that I haven't really encountered before, and I've kind of confused myself with all the talk of "bubbles" and "capture" and various complexities of creating custom events, etc...Anyway, I'm trying to figure out how to dispatch a global broadcast style of event.1) If I have a custom class that resides in the Display List (the DispatcherClass), how do I set up this class to broadcast a "global" event?Actionscript Code:1b) If I have another custom class that also resides in the Display List (but in a completely unrelated heirarchy), how do I get this ListenerClass to "hear" the event WITHOUT explicitly referencing the instance of the DispatcherClass like so:
Actionscript Code:DispatcherClassInstance.addEventListener("DispatcherClassEvent", handler, false, 0, true);Is this even possible?2) What if the DispatcherClass DOES NOT reside in the DisplayList?Is it possible to dispatch a "global" style event since there is nothing to "bubble" up through?2b) How would I get a ListenerClass, maybe on the DisplayList, maybe not, to "hear" this event?
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Apr 15, 2009
I am trying to create a text effect using a custom class. The class receives refferences to the TextFields that I want to apply the effect to, an the effect should take place whenever the text is changed in these TextFields. The problem is that Flash doesn`t seem to provide a way of listening for the TextField.text event of a Dynamic TextField... Or does it? Just to clarify: On the stage I have a dynamic TextField named tText. I create a new instance of my class and call MyClass.addTarget = tText, which is supposed to tell my text effect class that it should apply the effect to tText, whenever the .text property changes.
PS: What I have tryied was TextEvent.TEXT_INPUT, but apparently that`s for Input TextFields, whenever the user inputs some text. I change my text through code. I have also tryied Event.CHANGE, but that doesn`t seem to work either...
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Mar 3, 2010
Can a parent .swf listen for an event in a child .swf?
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Oct 15, 2011
I've got 3 classes: The class that recognizes the change in URL (using SWFAddress by Asual):
[Code]...
And the "Hello World" never appeared in the output window - so I'm not sure if is it possible that my MenuPanel has a chance to receive a info about completing the validation triggered by some other class?
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Oct 6, 2010
In Flex, is it possible to listen to all event types of an object that's an IEventDispatcher? addEventListener's first parameter is the type, which is a string. In many cases the documentation is not clear what event type it fires. I'd like to attach a generic listener to inspect the events.
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Oct 15, 2011
I've got 3 classes: The class that recognizes the change in URL (using SWFAddress by Asual):
[code]...
And the "Hello World" never appeared in the output window - so I'm not sure if it's possible that my MenuPanel has a chance to receive an info about completing the validation triggered by some other class?
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Feb 21, 2011
I'm trying to perform a function when a user presses the up or down arrows on the key board. not having any luck.
ActionScript Code:
KeyListener = new Object();
KeyListener.onKeyDown = function() {
[code]...
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Jul 18, 2009
I have an external SWF with a custom event.Custom event:
Code: Select allpackage
{
import flash.display.Sprite;[code]...
Now,I would like that my loader (main.swf) listen to this event.How can i do that? I tried:
Code: Select allloader.content.addEventListener(MySprite.MYEVENT, doSomething);
But got this error:
Code: Select allTypeError: Error #1034: Type Coercion failed: cannot convert flash.events::Event@51866881 to MySprite.
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Jun 29, 2010
Im having the issue of functions firing too soon after each other and need to use listeners. But using what I thought was correct below is not working.ThexmlData.addEventListener(Event.COMPLETE, initialize); should call the initialize function in this example, right?
Code:
function loadXML(e:Event):void
{
[code]....
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Oct 10, 2010
Can a parent just listen for a specific event coming from ANY of its children?
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Jan 28, 2010
I am developing a project in Flash Builder which will load a file built by Flash CS4. The code in Flash CS4 is below, it's a doc class. I am sure the dispatchEvent has been invoked[code]...
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