ActionScript 3.0 :: DisplayObject Being Orphaned From Parent?
Feb 25, 2009
Firstly, I've created a global variable called mc to store a movieclip instance:[code]Later on inside a function, I've created a new instance of my movieclip and added it to the stage.[code]Now, this is working fine most of the time. But at one particular point in my program, after many other things have happened, when trying to remove this movieclip it throws the 'display object must be a child of the caller' error.So, I'm thinking if mc isn't a child of the stage, what is it a child of? Tracing mc.parent returns null - so it seems to be telling me that the parent (which was definitely the stage when it was created) has wandered of somewhere and abandoned my movieclip!I have no idea how this has happened, and as the whole program is several thousand lines long I can't post it here. So, does anyone have any idea what might cause a display object which is added to the stage to become orphaned like this?
S there any way filters applied to a DisplayObject (drop shadow, glow, bevel) can scale relatively with the parent (the DisplayObject it is inside)?And what about other properties like .distance for drop shadow?For example... If I have a 100px rectangle with a 10px glow inside a container object, and I set scaleX/scaleY of the container to .1, I want the glow to inherit the scale change from the parent (1/10th the size) just as the display object does that the filter is applied to.Instead, if you try this, you will see the glow stays at 10px no matter what scale the filter target or the container is transformed by.Pseudocode example (steps to reproduce),
1) create a sprite called _myOuterSprite on stage at scaleX = scaleY = 1
2) create a sprite called _myInnerSprite inside _myOuterSprite at scaleX = scaleY = 1
3) draw 100px rectangle into _myInnerSprite
4) apply 10px glow to _myInnerSprite
5) transform scale of _myOuterSprite to .1
Result:
- child sprite (rectangle) scales to 1/10th the size
- glow stays the same size
How can I make it so that glow scales to 1/10th as well?
...without capturing and scaling bitmap data
...without losing interactivity on objects
...in a way that would work visually for every filter, not just glow (drop shadow has distance property too, etc)
(i'm using flashdevelop / flex sdk)IS there any way filters applied to a DisplayObject (drop shadow, glow, bevel) can scale relatively with the parent (the DisplayObject it is inside)?And what about other properties like .distance for drop shadow?
For example... If I have a 100px rectangle with a 10px glow inside a container object, and I set scaleX/scaleY of the container to .1, I want the glow to inherit the scale change from the parent (1/10th the size) just as the display object does that the filter is applied to.Instead, if you try this, you will see the glow stays at 10px no matter what scale the filter target or the container is transformed by.Pseudocode example (steps to reproduce),
1) create a sprite called _myOuterSprite on stage at scaleX = scaleY = 1
2) create a sprite called _myInnerSprite inside _myOuterSprite at scaleX = scaleY = 1
3) draw 100px rectangle into _myInnerSprite
4) apply 10px glow to _myInnerSprite
5) transform scale of _myOuterSprite to .1
Result:
- child sprite (rectangle) scales to 1/10th the size
- glow stays the same size
How can I make it so that glow scales to 1/10th as well?...without capturing and scaling bitmap data ...without losing interactivity on objects...in a way that would work visually for every filter, not just glow (drop shadow has distance property too, etc)
I have a data grid in one frame, then upon moving to the next frame use removeChild to get rid of it, which works fine.But it seems to leave behind the keyDown handler that is naturally part of the component (which is used to navigate the rows of the datagrid).Is there any way to get rid of this?The first time (and only the first time) I press the up or down arrow key in the next frame which does not have the grid, I get the following error:
TypeError: Error #1009: Cannot access a property or method of a null object reference. at fl.controls::DataGrid/drawList()[code]...........
I would like to be able to quickly check if a given DisplayObject is a descendant (not in the inheritance sense - ie. child, grandchild, great-grandchild, great-great-grandchild, etc.) of another DisplayObject. There doesn't seem to be a native way to do this and I can only think of two ways to achieve it: Create the mother of all nested loops. Seems a bit, I dunno, wrong? Dispatch a bubbling event at the 'child' and check if the potential 'parent' receives it.
[code]All clips are squared.Ok, on the PlayerPlane, there are little soldiers, which have hotkeys. The effect I'm trying to create is I want to position the GameStage so that the currently selected soldier appears in the center of the GameClicker clip.The GameStage is movable by the player (to scan other areas of the map)by holding the CTRL key, so it's easy to kinda lose track of where your players are.I have tried using localTo Global and globalToLocal techniques, but I think I'm lost on the actual math of getting the GameStage to move the correct distance so that the selected soldier is centered to the GameClicker.[code]
I got a "preloader" that creates an movieclip and loads an SWF. Now in the loaded SWF i want a close button to go back to the "preloader". The preloader isn't an actuall preloader but some sort of mainclip.Now i tried this:removeChild(MovieClip(e.currentTarget).parent.pare nt.parent)But i get error:ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller.at flash.display::DisplayObjectContainer/removeChild()at MethodInfo-6()
I'm currently making a platform game and when the player shoots i want to add the bullets to the stage. The players gun class is in charge of adding bullets. The "players gun" is a child of "players gun holder" which is a child of "player" which is a child of the stage. is there a better or more dynamic way for the "players gun" to add bullets to the stage rather than using parent.parent.parent.addChild (bullet);
if I add a clip to the stage as a child and remove the parent and set the parent equal to null, does the child get collected and removed from memory? What if the child has an image loaded into it as its child?
In my application I'm loading a series of png images as overlays that can be tinted for customizing in this app. When I trace my memory, the basic app idles at 64,000 k. The exact second I load those overlay images it goes up to 205,000k. If I remove those clips and "clear" the stage I should go back down to 64,000 k if everything is removed and collected correctly, right? It's not, it's hanging at 215,000 k. Are my images being cached and that is the reason for the memory staying up? If so, how do I prevent that. Or upon removing the parent of the image how can I un-cache the image.
If a user switches between models and loads several different items then the application actually crashes the Flash environment because of too much memory usage. It also does the same to browsers.
I am trying to access a function that is on my document class for my AS3 project, from a nested class. That is, the Document Class calls Class A which then calls Class B. So I am trying to access a function from Class B, I am trying to use MovieClip(parent).function(); but I am getting error 1120. The MovieClip(parent) (fixed to reflect my document class, etc) works when I try it from other classes but not from this nested class.
Simple drag and drop application where mc is dragged out of one parent mc and dropped into another parent mc.All works OK until I added 2 text boxes to the mc's -- one is a non-selectable dynamic text box (a label) which is set by the code, the other is selectable input text that the user can amend.
Finger cursor disappears when user hovers over the section of the mc that contains the text fields (even non-selectable text??) When the user trys to drag the mc by inadvertantly click-dragging anywhere within both text areas it causes this error: TypeError: Error #1034: Type Coercion failed: cannot convert flash.text::TextField@2374a381 to flash.display. MovieClip (same error appears for both text boxes)
The input text box may confuse the user - how do they sometimes click to drag and sometimes click to amend? I need to create an overlay area within the mc that is click-detected for the drag? Here's the relevant bits of code:
var itemArray:Array = [ {iname:"police",ititle:"POLICE OFFICER"}, {iname:"insurance_assessor",ititle:"INSURANCE ASSESSOR"},[code].............
I have a parent swf which loads many child swfs (though only one is displayed at a time). My intention was to use the loaded SWFs document class to retrieve an array of objects to be assigned a tab index, combine this with the parent's own array of objects and apply sequential tab indices to them all. But what happens is actually that the parent's objects are assigned an index, but the external swf is unaffected. In fact, the external swf retains its automatic tab indexing, when I would expect that having set a value for InteractiveObject.tabIndex, automatic tab indexing would be disabled.
I've seen similar tales elsewhere. Most posts I've read are wanting to load an external swf, give it focus and loop through those objects, then close the swf and return to looping through the parent. However I would like loop through all objects as one. including manipulating the focus manager(s), and basically fiddling with every tab-related property I know.
I've struggled with this for a long time and have thrown in the towel. How the heck do you climb the ladder, then go back down again into another clip?
yourbutton.addEventListener(MouseEvent.CLICK,f); function f(e:Event):void{ Loader(this.parent).load(new URLRequest("newswf.swf")); }
which was suggested to me in a different post to target the parent loader class, however i now no longer can reference my preloader in the parent swf (extract from the parent swf):
trying to on mouse over set the parent of the moused over text field to the highest depth child of its parent i tried both of these: [code] private function
I cannot use the following in my ActionScript due to conflicts with the host application:
_level0 _root _parent references
On a pop-up box I have a close button with an absolute reference: closeBtn.onRelease = function{ unloadMovie("_level0.Page_1.holderBox");} Is there another way to make this work without using _level0 or _parent? I've read that it is possible to use a global variable on the main timeline and ref that, but cannot get that to work.
I am trying to make a calculator where a user can select from a list of items. If a user clicks say "ITEM1", it should add the item to a "CONTAINER_MC". The problem i have is all my data is set inside an array containing names and prices like the code below.
Here is a working script to drag drop a ball from the stage into another target mc:
ball.addEventListener(MouseEvent.MOUSE_DOWN, pickUp); stage.addEventListener(MouseEvent.MOUSE_UP, dropIt); function pickUp(event:MouseEvent):void{ [code]...
It works well but I'm new to AS3 and I am having difficulty amending this script to drag the ball out of a parent mc (instead of the stage) and onto another mc (the target mc). To explain: imagine a ball, a box, a tri, + more shapes all within a scrolling mc (initial parent), the user scrolls to select a shape, then drag-drops onto a target mc on the stage.The scrolling is no problem, but how would you amend the script above so that the ball can start inside a parent mc rather than on the stage itself?
I want to place an object either directly on stage or in some other movieClip but I need to read parent height to align it properly from the bottom.I thought I could use this and it will work for both the stage and the movieClip and I could get away with one line of code:
but this doesnt work for stage, I need to use this:
Code: trace(parent.stageHeight);
which is the same as this: so obviusly I need to ask first whether the parent is the stage, so I can find the height...So what is parent.height actually outputting?
I got a Parent Sprite, let's name it SpriteP, which holds inside it two other Sprites. Sprite1 and Sprite2.[code]Sprite2 is a rectangle. When I rotate it, of course, the height of its parent, SpriteP, GROWS. But I would expect that height to go back to what it should be when I'm removing Sprite2!And it does! If I remove Sprite2 while NOT being rotated, the height of the parent drops back to normal, 200.
i am slightly confused about the parent and child relationship. lets assume we have several different instances, what would be difference of adding them all as children of the stage and creating a parent-child hierarchy between them(other than the access path).
I got a Parent Sprite, let's name it SpriteP, which holds inside it two other Sprites. Sprite1 and Sprite2.
When Sprite2 is NOT rotated:
Code: trace(SpriteP.width + ' ' + SpriteP.height); //100 250. SpriteP.removeChild(Sprite2) trace(SpriteP.width + ' ' + SpriteP.height); //100 200. -> works, 200 is good. When Sprite2 is rotated at 90:
[Code].....
And it does! If I remove Sprite2 while NOT being rotated, the height of the parent drops back to normal, 200. But if I rotate Sprite2, the Parent won't update its bounds.
I have a child class that is loaded into the parent class when the swf begins, like so: var myvar = 'hello'; public function Parent() { this.child = new Child(); }; How can I retrieve the variable 'myvar' from within child?
I've come across a pretty bizarre bug in my code when working with level generation in a side-scrolling platformer I'm trying to make... I've been desperately trying to debug it for the past 2 days! I have a movieclip (exported for AS) called Section1, that contains the first section for a level. It's basically a huge movieclip containing other movieclips; this Section1 movieclip contains the graphics for the level, as well as collision detection (the graphics are .pngs converted into movieclips, the collision detection is transparent rectangles converted to movieclips). FYI, it's a BIG movieclip... roughly 3400 pixels wide.
So, since it is the 1st section of a level, I have it spawn at the beginning of the game. However, I need to access all the platforms, walls, and graphics inside section1 from inside AS. So, here's the code I am using to do this:
public var s1:Section1; public var platforms:Array, walls:Array, levelGraphics:Array; ... // in Main's constructor now: s1 = new Section1(2236, 8);
[code]....
Initially, it works... I've traced the data in the arrays in my update method (run every frame), and I can see that the arrays contain displayobjects... for a split second, that is. Seemingly out of nowhere, the values for all the elements in the arrays become NaN! I think to myself... of course these DisplayObjects are "not a number"... they're displayobjects! Of course, this renders my arrays useless, since I can no longer access the data I need to do collision detections!
