ActionScript 3.0 :: Flash - Removing Objects When They Reach The Edge Of The Screen
May 28, 2011
currently i am removing objects when they reach the edge of the screen with
[Code].....
i understand this does not delete the object? without removing event listeners before removing the object the error log fills up, i believe its due to the stage isnt there after its removed. this makes me think that removechild does not delete the object? i will be creating and deleting many objects during runtime, and i dont want to slow down or use too much memory, how to properly free up the object
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Mar 1, 2008
here i have a zipped fla file where i have problem with the character still wallking when road scrolling reach the end of the screen.how would i stop that?heres script:
Code:
//road scrolling
road.onEnterFrame = function() {
[code]......
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Sep 9, 2008
Using Adobe Flash CS3 on a sometimes dual monitor setup. After attaching back to my docking station, and starting up Flash CS3, the window is off the edge of the right hand monitor somewhere, and I am not sure where. The mouse cursor makes it look like the window is somewhere off the lower right hand corner of the screen somewhere, but even after holding in the left and up arrows for a long time, there is no motion, and the window never appears. I can maximize the program back to my primary monitor, but this is hardly an ideal solution.
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Dec 6, 2005
I have a tooltip that follows the mouse, but i need to to figure out where the edges of the screen are and always keep the tootip on the screen. Its something to do with screen width and height.
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Aug 18, 2003
I am trying to create a dragable menu.
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Apr 14, 2010
I've built my first flash application and it's very close to being finished. I have a problem with two buttons that are on the are on the left and right of the stage. When the browser is enlarged these buttons don't remain on the edge of the browser. Not sure if I explained that very well so here is a link to the application [URL] if you make you browser wider you will see my problem.
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Sep 16, 2009
I am trying to make my screen scroll as my character moves to the edge of it, but when I get to the edge of the screen nothing happens, I think this could be something to do with my registration points but I'm not sure. I have added trace statements for debugging but no luck. I have included my Fla so you can see what I mean.
Here: [URL]
Here is the code I am using to try and make this happen
PHP Code:
// scroll the LBground if character gets past half way up or down the stage
function scrollLevel():void {
// Horizontal scrolling
var horizontalCentre:Number = stage.stageWidth / 2;
var horizontalPosition:Number = LBground.x + Mchar;
[Code] .....
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Aug 16, 2011
I am a newb to Flash CS5 Pro, so I can't tell what is wrong. I have multiple objects on my stage that I copied to create afull effect. Most of the objects perform perfectly, but the ones on the edge of the stagedisappear when I export to video. When I zoom in to look at them, they are there,but when i zoom out to fit to page, they are gone
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Nov 16, 2011
I need to do this project for school and I'm missing this one thing. I'm working in actionscript3 and have a panoramic picture of a room, that I'd like to move/slide(left and right) whenever the mouse cursor hovers near the edge of the screen. I'd also like to loop that image, so that you could slide it for eternity :) I tried to find a script for that but apparently the language barrier is too much for me.
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Oct 15, 2009
I have a problem with this code:[code]There are two overlapping objects on my stage: character_mc and vanish_mc. As soon as i start the scene [Ctrl+Enter] vanish_mc is VISUALLY removed. But the code still sees a collision somehow. How can i Entirely remove the object vanish_mc?
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Sep 14, 2010
I seem to be running into some garbage collection issues. I'm making an RTS game with a side scrolling map. I have a "game" layer on the stage which scrolls left and right, all the troops, vehicles, bullets, etc are within this layer. If I scroll the game layer to the far side of the map from some tanks placed at the other end, the tanks disappear. I can only assume flash is "helpfully" removing objects it thinks are too far away form the action to be of use any more. I'd rather it didn't.
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Jul 19, 2011
I use this piece of code to create some eyecandy of debree falling. When an object is destroyed i spawn some rubble and let is fly over the screen. But... when i use this a lot, slowdown is there and even when all the objects are gone the slowdown stays. The good old 50fps won't come back anymore
public function destroyBlock(xPos,yPos,nrObjects) {
for (var debree = 0; debree < nrObjects; debree++) {
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[Code].....
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Sep 3, 2009
I'm tweaking the video code found here [URL] His progress bar starts at the edge of the stage. My progress bar starts at x=40 into the stage. My problem is that even though all my mcs related to the progress bar are positioned properly the scrubber mc hops to the edge of the screen when the video starts. It also acts as if the progress bar you scrub though is at the edge of the screen too. I can't figure out why it's doing this. There's nothing in the code to tell it to do as such.
[Code]...
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Jul 7, 2010
Is there a way to overlay other objects on top of fullscreen video in Flash Player?
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Dec 7, 2010
Consider the following Flex code:
private function fullScreenHandler(evt:FullScreenEvent):void {
if (evt.fullScreen) {
viewstack.selectedIndex = 2;
[Code].....
I have a viewstack with two containing canvases. Canvas 1 is used when in normal mode and canvas 2 which is used when in full screen mode.
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Jun 10, 2008
I have a inventory that will hide/show itself whenever the mouse is over it. And inside "inventory", I have a couple of slots that should trace "Pres" whenever I click on them. Problem is, it doesn't. I think it has something to do with my inventory hide/show code because when I took it out, everything worked. Heres the code for the inventory:
[Code].....
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Sep 22, 2011
I made a custom event that's supposed to be fired when a specific function within a class is executed. I listen for this event from within my main script, frame one of my timeline. My CustomEvents.as
package {
import flash.events.Event;
public class CustomEvents extends Event {
public static const PAGE_EMPTY:String = "Page Empty";
[code]...
I know I am reaching the CustomEvents constructor, as the trace within it gets printed.The problem is it seems like the event does not reach the function caller?I was unable to find good examples of how to use simple custom events, so this is how I think it's supposed to be.
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Sep 16, 2011
I have not been able to find anything in this matter, but I hardly think I would be the first to try it so maybe I am looking in the wrong places.What I want to do is set up a dynamical access to 20 or so classes. (They are bitmaps in the library that I want to connect with MCs that are implemented in the code.)
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Jul 10, 2009
i am having a problem removing objects from the stage and their associated arrays. basically when a "shark" is added to stage i want all "cans" to be removed and i dont want any "cans" to be added until the shark has left.my problem comes as i dont want to keep using for loops as i already have two or three for "cans" alone and i heard thats not good for the code!
Code:
var canTimer:Timer=new Timer(2000);
canTimer.addEventListener(TimerEvent.TIMER, addCan);
canTimer.start();
[code]....
im not 100% sure were to put this in my code-i didnt really want to put it in a function of it's own as it would mean using another for loop?i get a output error when a shark is added like this:
Quote:
TypeError: Error #2007: Parameter child must be non-null.
at flash.display:isplayObjectContainer/contains()
at dolphinmoviegame_fla::MainTimeline/canHitTest()
even though all "cans" are removed.
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Feb 23, 2009
I have a utility function:
function removeFromArray(item:Object, arr:Array):Object {
for(var i:uint = 0; i < arr.length; i++) {
if(item == arr
[Code]....
This function searches through an array and sees if an item exists in it, if it does, it removes it and returns a reference to that item.
This works fine for most things. But I just ran into a problem where I need to remove an array from an array.
so my array looks like this [ [item1a, item1b], [item2a, item2b] ]; and i need to remove [item1a, item1b] from it. But passing in the the array to remove and the full array to remove it from does not work because i guess of the casting to an object in the parameters list. Can the functionality i want be used? if so how?
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Mar 19, 2010
i don't understand why none of my display objects are not being removed. when i press the button, i'm expecting a trace and removal of both shapes and the button, but nothing happens:
[Code]...
i realize there are better ways of accomplishing this, but i'm learning and therefore only interested in why the above code doesn't work.
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Feb 4, 2010
I have made a class that creates a dotted line following a moving object. The dotted line is small circle added to the stage (and to an array) every half a second at the object's position.
First I add the circles to the stage, when the object stops moving I remove them from the stage.
This, however, only works twice, after that it throws a "display object must be a child of the caller" warning.
ActionScript Code:
public class Path extends MovieClip {
var tInterval:Timer=new Timer(50,500);
var pathArray:Array=new Array ;
[Code].....
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Feb 22, 2012
I'm making a banner rotator that reads image urls from an xml file and adds them to a sprite on the stage, then tweens them into position. Here's the relevant code:
[CODE]....
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Apr 3, 2009
I have a question about how best to remove display objects.removeChild(object);Given that there are no other reference to this object, does using removeChild alone make the object eligible for garbage collection, or does it also need to be given a null value as well?[code]In both these cases, I get the classic 1009 error. That leads me to believe that if you use removeChild, you don't also need to give the object a null value.?url...
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Feb 4, 2011
I have created a shooting game and I am struggling to create a splash screen at the beginning informing the user of the controls with a button to start the game, which removes the splash screen. I am trying to add the splash screen in the main timeline using addChild event. I can get the splash screen to appear on the game and remove it when the playgame button is pressed, but this prevents all the other event listeners so I am not able to fire or move the ship.
In the splash screen I have the code :
Play_btn.addEventListener(MouseEvent.CLICK,playgame)
function playgame(e:Event):void{Play_btn.removeEventListener(MouseEvent.CLICK,playgame)
parent.removeChild(this); }
and in the main timeline I have :
addChild(splashscreen);
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Dec 10, 2008
I've created a navigation system using Flash 3D functionality. It consists of a MovieClip with a rounded rectangle + a text with no-antialias bitmap font. I'm using Tweener to modify the z co-ordinates of the mc to make it "slide onto" the stage. However when the mc is completed animating it is notably blurry (the text at least). I was wondering if it might just be because it's in 3D-space the perspective (which hasn't been modified) is throwing the rendering off. So onComplete of the animation I try assigning null to the z-value in hopes of removing the item from the 3D space. I've attached the package code I'm using to create and animate the navigation feature.
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May 14, 2009
I was just wondering--and it's probably an obvious question really--if I make an object null and that object had one or more event listeners registered, are the listeners removed?
for example:
Actionscript Code:
object.addEventListener(Event.SOME_EVENT,callBack);
function callBack(evt:Event):void
{
object = null;
[Code].....
In this case have I removed 'object''s listener when I made the object null?
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Jan 1, 2010
I have an animation of footprints being left on the ground as if by an invisible man or ghost. the animation consists of:
1 movieclip containing --> 5 footprints each one is an individual movieclip. Each print fades in and out using the Tween class with an alpha effect
The main timeline uses the following code to create random instances of the animation:
var myTimer:Timer = new Timer(12000);
myTimer.addEventListener("timer", timedFunction);
myTimer.start();
[Code].....
so it looks like the function is being called correctly and removing the first instance of FOOT from the stage. but the 2nd iteration generates the error. Is this is a problem with the timer? I would like to send this to someone for examination and assistance.
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Oct 15, 2009
I'm trying to make a Starfield program as practice for ActionScript 3. I'm using a timer event in the document class to create Star objects which are defined by an object class connected to the movieclip Star in the Library. The object class has a timer as well, and at each tick it repositions itself a few points away and scales up, creating the image of a star shooting towards the sides of the stage. When the star has gone past the boundaries of the stage or when it has scaled to a certain size, it removes itself from the display list with the command: this.parent. removeChild(this);This removes the star from the display list just fine, however after that I can't get the star to set itself to null so that it will be removed from memory, and I'd like some suggestions on how to do this properly. An idea I had was to make a function in the document class that the child objects can call, something like this.parent.KillMe(this) which would give itself as a reference to the function, which could then use a local variable reference to set the child to null, removing it from memory. This all seems terribly complex, so I'm sure there's another way.
I haven't noticed a memory leak or slowdown, however, so I'm curious if objects without references that are removed from the display list are automatically removed? That could be both good and bad, as the object might want to add itself to the display list again at a later time; not in this Starfield program, but perhaps in another I write.
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May 1, 2010
I'm moving two objects accross the stage at different rates using the same function:
Code:
function moveClip(clip,speed){
clip.addEventListener(Event.ENTER_FRAME,moveIt);
function moveIt(event:Event) {
[Code]....
In AS2 I'd just use dot notation as above and it would work from anywhere or perhaps _root.red....
I've tried root. stage. childbyname Not sure where to from here.
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