Actionscript 3 :: Inherited Variables - MyVar Not Keep The Value Of "car" When The Base Class Constructor Is Called
Jan 26, 2012
I have a base class "Vehicle" and a derived class "Car".
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Basically, I want to set a vehicle property in Car's constructor, call Vehicle's constructor with super() and have Vehicle do something based on myVar. But this is the output i get: car pre: null car post: car vehicle: vehicle Why does myVar not keep the value of "car" when the base class constructor is called? How am I supposed to implement this correctly?
I have a bunch of movieclips( clip A and B for this example) in my library that I want to use the same base class (MyClass.as in my example). I assigned the same base class in each clips property window and then gave each clip a unique class name which doesn't exist so flash says it will create the class automatically.
Now if I create a bunch of A's and B's on the stage via actionscript, how would I send variables to the constructor in MyClass.as without having to creating A.as and B.as to pass the variables along to the base class? if I do: Var newA:MovieClip = new A (argument 1, argument2, etc) It says it expects 0 args since the A & B classes were created automatically by flash.
I am creating a Weapon class for a game and the weapons itself will be the sub classes. The sub classes will hard code some values (such as max ammo and the weapon name).
I trying to access this declared data in the base class constructor, at the moment it's not outputting the values. Is this possible?
My current workaround is creating a protected method in the base class to trace the information and calling that method in the sub class's constructor, this works fine but this doesn't seem like the most efficient technique?
already searched for this kind of thread here but didn't get any answer that suited me. It comes like this, I made this class (LoadWebPage)to basically remove the old Swf and load a new one. I've associated this class to my menu Btn's.
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And I'm getting that 1203 error saying that my class doesn't have a default constructor.
I'm writing an Air application using only Actionscript, and Flex3 SDK as the compiler. Everything compiles and runs fine under adl, but when the final air file is built and installed, the main class is never initialized.[code]When run under ADL, "Init" will be output to the console, but when installed and run, nothing happens (the constructor for class main is never called).
I have a class like this.. public class Doc { public function Doc():void {} public var myVar:Boolean; } How can I know if the value held by myVar is default false, or someone has assigned false to it? Isn't there an undefined state? How can I achieve such a thing?
I'm having a little trouble with my move to as3, (surprise surprise huh?) Basically when I create a movieclip, I wan't to pass some values into it, like so:
package { import flash.display.Sprite; import flash.events.MouseEvent;import lib.CustomEvents.ItemLoadCompleteEvent;import lib.Room.Item;import lib.Room.ItemStruct; public class DragTest extends Sprite{private var itemInstance:Item;public function DragTest(){var tempItemStruct:ItemStruct = new[code].......
I have used the same code with a normal clip and it works. When I use it with my own defined item it does not work. Here are the details.
itemStruct: containing the properties of the item to be made. item : Loads the itemstruct defined item and puts it in a movieclip (item is inherited from movieclip).Traces from the above code, show that only the mouseUp function works mouseDown does not work. Though the same code works fine for a simple movieclip.I have already tried
EDIT: I have tried put the mouseDown on stage again if I click outside the item and drag from stage it both mouseDown and Up seem to work. But If I click on the item and drag. Still no luck. I have also added the item as movieclip on stage.
EDIT: If I have a class called Items and it has a movieclip instance which is loaded from a url. The startDrag on item fails. If Items contains a movieclip which we initiate from a SWC (not load it) on Drag works fine. Now how to solve the issue where I have a class which has a movieClip loaded from outside.I have the following code:
What I deduce from this example is that the swfLoader.contentLoaderInfo and _ldrInfo = this.contentLoaderInfo refer to the same object in the same memory location. So you may think: "well the last added event will overwrite the first one (the internally one added). But it doesn't. The two event listeners will respond sequentially. First the internal listener and then the external listener.
package { import flash.display.Sprite; import flash.events.MouseEvent; import lib.CustomEvents.ItemLoadCompleteEvent; import lib.Room.Item; import lib.Room.ItemStruct; public class DragTest extends Sprite { [Code]....
I have used the same code with a normal clip and it works. When I use it with my own defined item it does not work. Here are the details. itemStruct: containing the properties of the item to be made. item : Loads the itemstruct defined item and puts it in a movieclip (item is inherited from movieclip) Traces from the above code, show that only the mouseUp function works mouseDown does not work. Though the same code works fine for a simple movieclip I have already tried stage.addEventListener(MouseEvent.MOUSE_DOWN,mouse Down);
EDIT: I have tried put the mouseDown on stage again if I click outside the item and drag from stage it both mouseDown and Up seem to work. But If I click on the item and drag. Still no luck. I have also added the item as movieclip on stage.
I have a custom event that is dispatched when a slider is moved but I receive no event from inherited dispatcher class I created whereas I followed the same syntax as solution for My flash custom event doesn't trigger
I'm slightly new to Flash CS3 + AS3 combo, so its more of a lack of practice question. My question stems from the problem described here http:[url].... . Note, its not the same problem, its a new one.The Problem ,So I have multiple library assets (which are on teh stage) and I want to assign similar functionality to all of them.
Attempt 1: So I create the n assets, create a custom class in AS3, link them to Flash CS3 and obviously enough it gives me the error that multiple assets can't be linked to the same class.Obvious enough to understand (well not completely, because from a programmers background it doesn't make sense).
Attempt 2: Same as attempt 1, but instead of linking all the assets to the same class I make the base class the same class, and let the derived class be dynamically created by Flash on compile time.So the linking works, but the problem is, in my base class I have a method which does something (say an tween) on a child of the library asset. So if the assets on the stage/library are called asset1, asset2, asset3 (same name for asset name, class name, id name), each of them has a sub-movieclip called ... say 'foo'. now if I manually wrote a class for each asset, I could do 'this.foo' to play with the sub-movieclip. However since this functionality is in the parent class, I'm unable to do it.
P.S. If you're form a programming/OOP background, its basically a abstract class problem. My Base class knows how to doSomething(), but it needs aSomething, which is defined in the Derived classes. However I found out that AS3 classes don't support virtual(C++ )/abstract (Java) in the true sense of the word (unless I missed some obvious documentation).
Let's say Class A has the flash.events.Event imported. Now let's say Class B extends Class A. Why in the hell do i need to import flash.events.Event in Class B? It makes no sens at all to me.
I'm trying to create a new instance of a MovieClip when the original one has been used. Would sound easy enough. Just use: var
instanceName:ClassName = new ClassName();
the class name/mc in the library im trying to duplicate is MCg1 so
var instanceName:MCg1 = new MCg1(); right?
However, the particular object in the library i'm trying to duplicate has a base class that is an external class file (just to control it's drag drop functionality)... i.e baseclass is not set to the standard flash.display.MovieClip, or whatever the case maybe. So i end out with a: TypeError: Error #1009: Cannot access a property or method of a null object reference.
I have this Fla which contains a symbol that is linkaged to a certain class that is in my project. That class inherites a base class named CMovieClip which resides in one of the libraries that is in the class path (and inherites from MovieClip).Of some reason, every change that I do in the base class doesn't seem to influence the resulting linkaged class, much as if this library is cached somewhere that I can't feagure out.I tried to create the same conditions in a separate Fla but it does not repeat the issue.I tried to duplicate the symbol but the issue isn't solved that way.
I created a movieclip with a star. Then, I creates a document class and I named it as Main.as.
In that document class I wrote: package { import flash.display.*; public class Main extends MovieClip
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I´m not posting here all the code, but you can easily see that I´m using x_origin and y_origin variables to keep the original position of the movie clip. I will use them to move the star back to the original position.
The problem is that instead of being 20 and 30 respectively, tracing them I see that they are both ZERO. So when I drop the star, instead of going to x=20,y=30 it moves back to x=0 and y=0. I´ve to get the star position relative to stage, but I can´t find anyway!
I have an mc called sunny. In the properties panel I export her for actionscript. I put Sunny in the main class and Drag in the base class. The reason for this is that I want her to be draggable. I can't use Drag in the main class as another object is using that name. The Drag.as has the drag functionality. Why can't I drag her. I already have a solution - I wrote a specific class for her and extended the Drag class. However, if I have 10 mcs I'm not going to write specific classes for all of them. Summing up: Using the base class Drag in properties panel - why isn't she draggable?
I have two SWF files which I shall call container and slave. The slave file contains a movieclip that extends from a class I shall call base. base extends MovieClip and is compiled into an SWC. slave includes this SWC as a runtime library, while container includes it as merged (and does reference it so it should be compiled into the container SWF).
The container loads the slave like so:
bgURLRequest = new URLRequest(slaveUrl); var context:LoaderContext = new LoaderContext(false, new ApplicationDomain( null ), SecurityDomain.currentDomain); bgLoader.load(bgURLRequest, context);
When this loading happens, I get the error that class base was not found. I suspect this has something to do with the presence of the ApplicationDomain in there. I'm not sure what it does exactly, since I didn't write this loading code myself (but I do know that it's there for a reason so it can't be simply removed).
I have a program where I have multiple classes derived from a base class. I want to take all instances of the different subclasses and put them into an array. Is there a way I can search for anything derived from the base class?For example, right now a get the number of children, then see what they are, so:
for (var i = 0; i < this.getNumChildren(); i++) { if (i is "type")
I know what instance variables, contractor methods, local variables and constructor arguments are (I think) but I'm confused as to when or how to use them, for instance I have use this a lot and I don't really understand why it is used like this...
i) Create a symbol called SimpleSquare. This should consist of a simple red square graphic
ii) Create a class file to define a class called SimpleSquare. This should be linked to the SimpleSquare symbol. SimpleSquare ashould have the following functionality: When the instance is placed on the Stage, it should start to disappear by decreasing its alpha at 0.01 in every frame (hint: alpha)
I have a base class which is being created via remote_object [RemoteClass alias] from the server.I have other specialized classes that are derived from this baseclass, but serialization with the server always happens with the base class.The base class has meta data that defines what the derived class is, for example
[RemoteClass (alias="com.myco...')] public Class Base {
