ActionScript 3.0 :: Take For A Sprite To Be Added To The Displaylist?
May 28, 2009
I am having some trouble understanding the display list. This might sound silly but how long does it take until a sprite is added to the display list?
My understanding is that the root variable is only accessible once the object is added to the display list.In the following code I add the TLSEntry_Text to the display list and then on the next line I try to trace its root variable without luck. The root variable appears only in the enter frame event... I guess a little bit later.
What am I missing here? Is there a way for the display list to "force refresh" itself?
I've been working on building a game and encountered a strange problem this morning when instead of adding objects directly to the stage I needed to add them to a Sprite (I also tried this with a MovieClip) which was on the stage instead and they did not appear. And yes, before anyone says it, the MC/Sprite that I'm adding the objects to has definitely been added to the stage, I've made that mistake before and don't plan on making it again
Essentially I have been building the game's levels using various different objects (rectangles, circles etc) built in the Box2D physics engine and with attached sprites to represent them to the user. When creating each of these object I supply a DisplayObjectContainer in which the sprite representing the object should be placed. Up until now I have been simply been supplying my core game class as the DisplayObjectContainer, with no problems whatsoever - everything is displaying fine.
A new level design, however, will require me to apply a mask to the entire level (but not the GUI) so I decided to place all the level objects within a MovieClip or Sprite instead. I have created the new sprite as such:
levelObjects = new Sprite();levelObjects.x = levelObjects.y = 0; //Just to make surelevelObjects.width = GameProperties.stageWidth;levelObjects.height = GameProperties.stageHeight;levelObjects.visible = true; //Just to make sureaddChild(levelObjects)
And have been supplying this sprite to the level objects as a DisplayObjectContainer instead of the core game class. Everything is getting added to the stage as I can click on things and the sounds associated with the game objects are playing correctly, but nothing is actually visible! As I mentioned above I tried this using a MovieClip instead but got the same result.
I'm trying to get a simple AS3 app up and running, and for some reason, I cannot get a sprite to show. At this point, all I want to do is get a red sprite to fill the stage.
public class Main extends Sprite { public function Main():void
I have an AIR app who has a canvas that scales when I resize the window. I have a sprite that is added to that canvas. When I scale the window the sprite does not scale with it.How do I tell the added sprite to scale with the canvas? Or tell it to be 100% of the container always?Right now I am listening for a resize event and resizing the sprite on that. But that seems like a waste of code/ too much of a CPU hog because I can easily add an element (using MXML) and tell it to be 100% of the parent and it will scale it on its own (EG without telling it to).
Is there any event dispatched in ANY place of the display list if the order of display list items change?Or is there any other way to track that without manually keeping track of all display list order or needing to override all "setChildIndex" and "swapChildren" functions?
I'm working on a game for the iPhone using flash, and since memory is crucial i want to clean up displayObjects not needed. All the objects i need to delete is MovieClips taken from some array to another using splice(). Here is the [code]...
I'm working on a drag-drop solution, and acting when a item is dropped on the current target (let's say an "intelligent chess-board") is a breeze, as the board fires DragEvents when items are hovering over on dropped on the it.
What I'm looking for is a way to make the board act when an item is dragged OFF the itself. Of course - when the item is dropped somewhere else, I could fire an event there and tell the board that change has been done. But this is what I want to avoid.
I wonder if there is some way to monitor a change in the displaylist of the "board", so it fires an event when a child/element is removed from "outside"?
I am just trying to grasp a simple concept of utilizing loops, addChild, and eventListeners.My goal is to use a loop to create multiple instances of the same type of object from my library (called Ball), and when one is clicked, have it move "above" all other instances on the stage (and eventually drag, but that's easy enough to make happen later).My current code attempt is:
for(var i:uint = 0; i<=10;i++) { var my_ball:Ball = new Ball() //new instances of Ball from library export
I've been working on an application (with ComboBoxes) that requires scaling the entire application based on screen resolution. I thought it would simply require changing the "scaleX" and "scaleY" properties of the top-level application, but discovered that the ComboBox dropdown doesn't appear to scale accordingly, as in the following example:
which results in the dropdown appearing (sliding down) unscaled until it reaches it's extended length and stops at which point it scales up and remains at that scale until it is closed. I have also found that if you call "invalidateDisplayList()" on the comboBox or the dropdown, then it undoes the scaling, so it appears that whenever the updateDisplayList is called, the dropdown only applies it's parent ComboBox's scaling, and not the ComboBox's parent container's scaling.
I understand that, as a pop-up, the dropdown isn't in the Application's or ComboBox's displayList tree, which appears to be the root of the problem (no pun intended).
I have a library MovieClip Class that consists solely of a dynamic textfield contained in a MovieClip. I want to instantiate this MC, populate the textField with text, get the width of the resulting text and, if the width is less than a predefined MIN_WIDTH value, append more text. When the width is equal to or greater than my MIN_WIDTH value, add this MovieClip class to the display list. My question is, does anyone know if its possible to retrieve the length of text in a textField using Textlinemetrics BEFORE the textField has been added to the display list?
I have a bunch of objects with TextFields in them that are added to another object called Field.[code]If it is a player, and I can scale it, why can't I access the textField?
I've found myself in a tricky place, I've built an app that loads in swfs as external libraries so they can easily be changed at run time, all works well. I now need to separate the code from the art in these libraries so that external developers can change the art without getting their mitts on the code. Trouble is to do this my new code only library elements will need access to my overall manager class, which is the main document class, so that they can access the library manager class to add the appropriate art assets to themselves.
Now there's a couple of clumsy solutions I've thought of:
1, Store a manager class reference in a static var but that seems like a cop out.
2, Go through a few hundred thousand lines of code and alter every instantiation of a library element to include a manager reference - erm, let's not go there.
3, Have the library element send a custom event to the stage from its constructor which passes a return handler to the event listener so that can pass back a manager reference. Sounded like genius initially up until I realised that at constructor stage the library element won't be on the display list so can't bubble up to the stage
Iv'e been slowly moving over to AS3 in the past few months and I think I have learnt quite a considerable amout. However I am completly dumbstruck by the behaviour of the DisplayList. The kind of work I do requuires that the flash movies I make are timeline based (I know spitting in the face of OOP) because of the amount of animation used. However within these animations I also use snippets of ActionScript to have interactive moments such as drag and drops or tabs for the user to select a section. Now in these cases I as you would expect have to redepth some stuff (like the currently active panel of some tabs or currently active drag item etc). Using the display list I think is dead easy and I actually prefer it to the old Depth based system of ActionScript 2. This is where the odd problem starts.
On my stage I have 2 insences of the same MovieClip ("Clock1" and "Clock2") which has a child named "hand", also I have 2 text boxes just to dictate which movie is which. These clips and text are nothing special just author created in flash so no code involved for adding them to the display list.
I am using a Flash AS2 template for a PayPal shopping cart on my site. As the code is now, a new shipping charge is added to the buyers total for every item added. I would like it to have only 1 shipping charge, no matter how many items are added!
I am trying to create a graphical representation of the DisplayList of a flash site that is loading many external swfs. I want to be able to filter what is displayed (ie. Show only textfields, or show only images, or show only whatever). I have not been able to find a way to distinguish or select only the swfs. I would like this to be able to list ALL the swfs that are used in this projects and nothing else..
I created a class, extended the sprite class, and now in the constructor I am trying to set the Sprite's width and height properties which are inherited from the DisplayObject. However, after I set this.width and this.height, and print the values, I get 0 for both.
What the heck is going on? When I view the livedocs I see that DisplayObject has width and height listed as public properties. I have been able to instantiate a Sprite directly, and set the width and height after it's been instantiated, so I don't get it.
package { import flash.display.*; public class ScrollBar extends Sprite {[code].....
I'm doing a simple rotation on a sprite but there's a weird behavior where the sprite does not rotate around it's top left. I think I'm rotating along the top left of the test class instead of the sprite child. I would like to rotate the rectangle around it's top left corner (kinda like a clock hand). The code is pretty short so I'll let the code + pictures explain my problem:
package { import flash.display.Sprite;
[Code]....
I've read a lot of stuff about rotating around a fixed point, I've tried doing it with movieclips instead of sprites, I even copy pasted a tutorial on rotation and nothing works.
Then the numericStepper is drawn as if it is squished to 20% its normal height. If I pre-set mySprite width and height before adding the numericstepper, the trace output is 0,0 after adding it and it is not displayed at all. Is there some way I can make the sprite only adjust to correctly fit the numericStepper OR resize it afterwards without distorting the numericStepper component?
first i have 2 sprite.. it`s mcproduct sprite and mcproductpane sprite . mcproductpane is a parent of mcproduct sprite.. so inside mcproductpane there a several mcproduct sprite.this is a script of mc prodcut
PHP Code:
[Code]...
The problem is i want to set a button in here(mcproductpane sprite), this button will unload / make dissappear an image that i load using loader class in mcproduct sprite..how can i make this happen?when i want to make a button in mcproductpane sprite which the function of the button it`s to unload/make an image that i load using loader class in mcproduct sprite disappear.
Everytime I google this question I see confusing information about masks and blends, none of which seems to directly apply to what I think should be an easy thing... There are three Sprites involved here...the lowest layer sprite is pretty much a background. I want to overlay a translucent Sprite on top of the background and then I want the third, top-most Sprite to act as a hole, so that the area inside the third Sprite is completely transparent, so that the background sprite is completely visible. How would I go about doing this dynamically (i.e. dynamically drawing the masking sprite and hole using the Actionscript graphics calls)?
Is it possible to set the height of the sprite depending on the height of an textfield inside that sprite? I'm creating a box with a textfield inside it, but I want the box to be sized depending of how much text it is in the textfield..
I have a brick class where I have created a rectangle using flash.display.graphics.I am using this brick class to create a grid of 10 X 10 in another class called grid using new brick() in a for loop.I have another class called ball where I have created a circle with flash.display.graphics.The problem is that I want to remove / destroy individual bricks when the ball hits the bricks on Event.ENTER_FRAME which is not happening.the error I get is shown only for the last brick that is created in a for loop.ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller.
at flash.display:isplayObjectContainer/removeChild() at grid/ball_movement()// my function in enter frame event The code I wrote in ENTER_FRAME is
I have a brick class where I have created a rectangle using flash.display.graphics.I am using this brick class to create a grid of 10 X 10 in another class called grid using new brick() in a for loop.I have another class called ball where I have created a circle with flash.display.graphics.The problem is that I want to remove / destroy individual bricks when the ball hits the bricks on Event.ENTER_FRAME which is not happening.the error I get is shown only for the last brick that is created in a for loop.[code]
Ive got a question that feels like it should be easy but I cant figure it out. Suppose I have 2d grid of square sprites on the stage, lets say 20 by 20 (400 sprites). Another sprite moves accross the stage on top of the grid. The moving sprite and the 400 sprites below it share a common parent. So heres the question: How do I find out which of the 400 sprites the moving sprite is currently over? And heres an extra wrinkle: I lied, the sprites are not square they are of differing shapes so I cant do a simple math calculation.
All I can come up with is something like hitTestPoint(), but then I would have to call it 400 times wouldnt I? That is probably the most inefficient way to do things. Is there a function like whatsUnderThisPoint(p : Point) which will return a list of every sprite on the display list that contains p?
