ActionScript 3.0 :: Accessing Another Class's Properties From A Different One?
Jul 1, 2009
I have two movie clips on the stage at frame 1 and frame 2. Both are instances of seperate classes. (They are not dynamically created, just their linkage is set to their class names)I have created soundChannel and Sound Objects in Class 1 and I want to access them from Class 2. (I want to stop the sound channel that was started in class 1)Is there any way to do this? If yes, will this be true for other properties also?
I have a class, call it MyClass, and there are several variables that I need to be able to access each instance of from within the class.So for instance, I need the object myObject1, a member of MyClass, to store the variable myNumber.From the main timeline, if I trace myObject1.myNumber, I get whatever number I've stored.
However, I need to check the numbers against another parameter, so I need to be able to test if myObject.myNumber == myOtherNumber. But from within the class, if I trace this.myNumber or myNumber I get null.What is the proper syntax for accessing a variable within a class?
I'm pretty new to fully using class's for my programming (in-frame scripting satisfied me for a while). I am having a problem accessing the properties of a class from another class. The first class (I'll call it controller) receives a reference to an object of another class (I'll call it display). Display have several specialized subclass (I'll call one SequencedDisplay). SequencedDisplay has a timer in it that I need to access:
when I try to access a property of the document class from another class, I get an error:
Quote:
1119: Access of possibly undefined property _left through a reference with static type flash.displayisplayObject.
Maybe I'm not doing it correctly? This is how I've been accessing document class properties so far. Does the fact that they're private make a difference?
I'm currently working on an interactive app, (site) which requires me to modify a few textfields, and change images dependant on the user choice (using mouseevent). This is a separate module, thus I'm posting the question in here instead:there are three images, that are lined up, with a textbox next to them. When a image is chosen, and enlarges, the text changes with the chosen image, according to XML.The textFields, 'text_title', 'text_description' are contained in a movieclip, called 'textbox'.This has been built in the Flash IDE (CS3) named info.fla/swf, which refers to a Document class 'com.info', made in Flex Builder 3...I attempted to modify the textfields using this:textbox.txt_title.text = "Loading";textbox.txt_desc.text = "test";But, I was unable to at first to change the text using the document class, as it gives "1120: Access of undefined property <variable>".
I am trying to access a property that belongs to the stage, from a class. For example, let's say I add a textfield with an instance name of "magic_txt" on the stage. In the Document Class, I am able to access magic_txt and update the field like so:
magic_txt.text = "Magic Text"
However, since I would like to work in classes, I am having a difficult time figuring out how to access the property "magic_txt.text" from a class. I know I need a reference, but I am unsure how to set this reference.
I am coming from a strong background in Visual Basic, and in Visual Basic, the way to access a form property is to call the form name (dot) object. In actionscript, it doesn't seem to be as simple.
(Actionscript 2 btw - and actually cs4, not that it really makes any difference?) I have a class that instantiates a movieclip from the library, e.g.: Code: debugbar:MovieClip = thing.AttachMovie("debugbar", "debugbar_mc", 999); So attaching it to the where ever "thing" is - could be movie clip or level0 or whatever, doesn't matter as "debugbar" is a private variable of the class. Now the important part - debugbar in the library is a movieclip that contains some components - buttons and textInputs. The problem comes when trying to access these components.
I would have thought that this would work: Code: debugbar.input_txt.text = "hello"; In order to set the text of "input_txt", the instance name of a TextInput component on the timeline of the movie clip (put there in author time). However, this does not work. Infact, I cannot access any specific "component" properties - they come back undefined. I can however set and retrieve MovieClip properties for the "input_txt", such as _x. However there is one added strange thing with this too - setting _visible to false doesn't seem to work (however perhaps a component by default overrides this).
I also appear not to be able to add event handlers to the component - at least for the usual component events. I tried casting it to a component, such as: Code: var temp:TextInput = TextInput(debugbar.input_txt); trace(temp); which gave "temp" as null. However if you trace the thing itself without casting to what it is, it gives the path to correctly. It almost seems like the components are somehow broken when trying to access them this way - or that they cannot be accessed this way?
The thing is, I was able to access all of this before, when the code to do it was placed on the timeline (frame 1, the only frame) of the debugbar itself, where the components were child instances. This meant I could just reference them directly too - so input_txt rather than debugbar.input_txt , although that is probably largely irrelevant. I need to have it in a class though, as I need to pass in certain objects that need to be accessed by the mc.
I'm doing some work with JSON in as3 using as3corelib (very useful) and was wondering if it is possible to get an object if all you have is one of its properties, also an object. Here's an example of some JSON:
"parentObject": { "propertyObject": { etc. } } so what i'm asking is, if I have propertyObject, can I access parentObject somehow?
I am working on setting up some simple AI actions for my enemy class in the game that I am working on, but I am having trouble accessing the player's X location within the enemy package to set up a detection function. I have defined the player on my Level package along with the enemy, and I defined the player's and enemies X and Y locations within the Player/Enemies package respectively.
Within my flash file I have linked to my Level.as file. Also within my flash file library I have two movie clips. Both have a square in them that are the same size but colored differently. One is called PlayerSpriteMC and the other is called EnemiesSpriteMC.
I'm doing some work with JSON in as3 using as3corelib (very useful) and was wondering if it is possible to get an object if all you have is one of its properties, also an object.Here's an example of some JSON:
I seem to be having a bit of a problem here. I'm generating a load of class instances using the following code:
maxpersons=25; for (var i:Number=1;i<=maxpersons;i++) { var person:Person = new Person;
[Code].....
OK. I then need to run through each of them and check for a collision with an object from the main stage (called redDot), which I pass to a method (called doDamage) within the class. I'm using the following code:
for (i=1;i<=maxpersons;i++) { if (game.getChildByName("person"+i).hitTestObject(red Dot)) { game.getChildByName("person"+i).doDamage(redDot); } }
I keep getting an error saying "1061: Call to a possibly undefined method doDamage through a reference with static type flash.displayisplayObject."!
It just won't work. I've tried altering the code to:
game["person"+i].doDamage(redDot);
but I get an unexpected trace output saying "TypeError: Error #1010: A term is undefined and has no properties."
Is it possible to access variables or even functions of an embedded SWF? (One which has been embedded manually and has not loaded from somewhere)For example, I embed an swf called Movie1 which contains a string variable declared in its root, would it be possible for the parent SWF to access that string?
I have written "components" in external .mxml files like dialogs and such. For example, GamePropertiesDialog.mxml. These components are used by another file, Main.mxml for example. If I instantiate a GamePropertiesDialog I am unable to access its pieces like a textbox with an id of GameName until AFTER I add the dialog to the display list.Doesn't work:
Actionscript Code: var tmp:GamePropertiesDialog = new GamePropertiesDialog();tmp.GameName.text = 'test';addChild(tmp);
Does work: Actionscript Code: var tmp:GamePropertiesDialog = new GamePropertiesDialog();addChild(tmp);tmp.GameName.text = 'test';
In actionscript an object's property can be accesses in this way: object["propertyname"] Is something like this possible in c#, without using reflection?
I have an engine I created a while back that loads objects into a container based on XML data. A really quick example of the XML would be like this: <level> <object cname="enemies.Robot"> <pos x="200" y="400" layer="mobiles" /> </object><object cname="Player"> <pos x="12" y="89" layer="mobiles" /> </object></level>
I have a class Environment that has a method loadLevel(data:XML) which I parse the XML through, then the function runs through the XML finding all object nodes and uses getDefinitionByName to determine which Object I want to create based on object.@cname. From here, I have to manually define each property based on the XML like so: obj.x = xml.pos.@x; obj.y = xml.pos.@y; etc.
I was wondering if there's an inbuilt method for setting a property based on a String. By this I mean something like so: var mc:MovieClip = new MovieClip(); mc.someInbuiltFunctionThatSetsAProperty("alpha", 0.5);
This way I could change my XML to be more like so: <object cname="Player"> <props> <x>200</x> <y>221</y> <alpha>7834</alpha> <health>Something</health> <power>3</power> </props></object>
And iterate through all the children of props to set all of my properties on the fly. I know if I create an Object and set properties within it like so: var obj:Object = { var1: "hello", var2: "there", name: "marty" };
That you can then iterate through names/values using the for(String in Object) loop like this: var i:String; for(i in obj){ trace(i + ": " + obj[i]); } /** * Output: * var1: hello * var2: there * name: marty */
Surely there's a way, as here's an example of identifying a property using a String: var ar:Array = [new MovieClip(), new MovieClip()]; ar.sortOn("alpha", Array.ASCENDING); So just to make my question more to-the-point: I want to be able to get and set properties that I can identify using a String.
I have been stuck on this problem for a while, and wonder if anyone knows the answer. It is concerning accessing some properties of a custom component. I marked the problem with the keyword [PROBLEM] in the following snippets of code.
I can't access the props and methods of an external AS3 swf after it's loaded by Main.as. Here's a very simplified version of the code for Main.as (the calling swf):
Code: package{ import flash.display.Sprite; import flash.events.Event; import flash.net.URLRequest; import flash.display.Loader; public class Main extends Sprite{ private var imgLoaded:Boolean = false; [Code] .....
I have a custom property called Player (like a basketball player) that has properties for points per game (ppg), rebounds per game (rpg), etc.I'm designing a piece where users can get averages and compare players across many different categories.
I have a String variable "stat" that tracks which property they want to compare. I can use "stat" in a sorton function, but need to use it to access the object property. So when the user chooses "ppg" or "rpg" i can access Player.ppg and Player.rpg by using the stat variable. Player.stat doesn't work.
I am trying to set a couple of properties (specifically width and height) for an mc within an externally loaded swf but am having bigtime troubles. Keep getting the 'Error #1010: A term is undefined and has no properties'. The code is attached below. I have tried to figure this out and searched for solutions but could not resolve this myself.
Basically, I have a menu created using XML. Each menu item has a fill that fades in and out as the user scrolls over them. What I want to happen is that when an item is clicked, it stays highlighted. The problem comes when I click on the second item. I can't get the first item to "unselect."Here is the menu code and functions.
Code: var menuHolder:MovieClip = new MovieClip(); menuHolder.x = myMask.x;
I am new to Flex and trying to modify some existing code.I am trying to It uses and Advanced DataGrid. In the click event, the ListEvent is passed in, and the code is able to access properties such as event.itemRenderer.data.feature.I would like to check whether the user has clicked on a parent (group) record or the child record; at runtime, I can see that the property I want to access is event.itemRenderer.listData.hasChildren. However, the listData property of itemRenderer does not show up in intellisense, and when I try to access that at design time, the project will not build because of the error "Access of possibly undefined property listData". But the property .data.feature doesn't show up in intellisense at design time either, and that builds and runs just fine.
What do I need to do to access event.itemRenderer.listData without throwing errors when I build the project? Do I need to capture a different event, or cast the event object or one of its properties into another object that will have the properties I need at runtime (I've investigated these options but cannot find info on how to do that).
I tried to execute the following actionscript3 program and I am surprised of the result of the call to f() function. I was expecting that the result of f() was "1" or at least "undefined" but the "0" value does not makes any sense for me. I will be pleased to have a good explanation of this behavior if you have one, or to know if you consider this behavior as "normal". I want to precise that I'm studying the behavior of Action Script programs in order to understand how the AVM2 really works and therefore I am not asking equivalent code to do the same thing. As a consequence if you have other tricky examples I am also interested.
I'm attempting to use "if" statements to determine if an dynamically loaded photo is portrait or landscape. The problem I'm having is when I try "gallery_mc.getChildAt(0).width", it returns 0.
