ActionScript 3.0 :: Create A Custom Class That Extends The MovieClip Class And Contains A Custom Property Of "marker"
Jan 23, 2010
I am new to AS3, as well as Flash in general, so forgive me if this seems highly elementary. All I am trying to do is create a custom class that extends the MovieClip class and contains a custom property of "marker". I want to be able to use and change the value of this custom property on the timeline for an instance of this class and have it behave just like any other (Ex: this.x ==> this.marker).
If I have a Document class that extends MovieClip, and I want to use it as the basis for another Document class, is it possible to create a subclass that extends the main document class and use that for a different FLA?
For example,
fla1.fla has a document class of MyMainClass: public class MyMainClass extends MovieClip fla2.fla has a document class of MySubClass: public class MySubClass extends MyMainClass
I've tried, but now I'm getting errors that all of my variables that reference stage instances aren't being found.
I followed the example from a previous question and I am loading an external swf using a loader and inside the loader event handler I am trying to cast the loader.content as my custom class PanelReferenceClip which extends MovieClip
When I publish I receive a this error:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
Just to make sure and test that the swf location was correct and the swf was actually being loaded, I changed the type of the content to as MovieClip and it worked fine.
EDIT: I also wanted to add that these swfs are being stored locally and not being pulled across the internet, multiple networks or servers.
I am not sure if I did something quirky in my class so I am providing the source to my custom class PanelReferenceClip
package components { public class templateSelection extends VBox { static public var tempSelectionBag:Dictionary;
[Code]....
I want to have a custom class tempSelection with a Dictionary as a public accessable property of that class. If I use this code, the compiler tells me:
1046: Typ wurde nicht gefunden oder war keine Kompilierungszeit- onstante:Dictionary
Which translates to:
Type was not found or was not a compile-time constant: Dictionary
i try to migrate from as2 to as3 and i have one problem When i attachMovie from library (addChild in as3) and i add custom property its work fine.Here is ex.
Code: var i:int; for (i=0; i<5; i++)[code]....
when i attach to that symbol custom class in the library.i got the error: #1056:Cannot create property...
i came across this problem and i have no clue why it's happening. basically, consider 2 nested movieclips on the stage, something like stage -> main -> filler. both movieclips have instance names (main and filler).
[Code].....
this throws an error 1119: Access of possibly undefined property filler through a reference with static type A. can anyone give me a hint on that, as it works with class A, but not B extending A? i understand it was meant to work?
I've been playing around with custom classes. My objective was to create a custom class (Testing) that would create a box when an instance of the class is created. I've tried three different approaches, however only (3) seems to be showing up. I'm just curious why (1) or (2) doesn't work?
Also is there a better approach than (3)? Since at the moment it's been created on _root. I hope the box can only be accessible through the instance. Since I'd like to incorporate the whole idea of public, private, encapsulation, etc.
I have a custom class being constructed from my main class. In the custom class it has another custom class that is passed in as a parameter. I would like to strictly type the parameter variable but when I do, 'the type is not a compile type constant etc'.This, I understand, is because the custom class used as a parameter has not yet been constructed.It all works when I use the variable type ( * ) to type the parameter.I suspect this is a design flaw, in that I am using an incorrect design pattern.It is actually hand-me-down code, having received a large project from someone else who is not entirely familiar with oop concepts and design patterns.
I have considered using a dummy constructor for the parametered class in my main class but the passed in class also takes a custom class (itself with a parametered constructor). I am considering using ... (rest) so that the custom classes' parameters are optional.Is there any other way to control the order of construction of classes? Would the rest variables work?edit)in main.as within the constructor or another function
var parameter1:customclass2; customclass1(parameter1); in customclass1 constructor:
googled it and hardly found any answer(seriously)need a quick solution for this:- How to create object from class that extends MovieClipSay i have a class name MC
I have to create a marker with 3 triangles at 120 degrees with each other. The fill colour of the three triangles will be different (to be decided depending upon the value of some other variable).
Google Maps can accept DisplayObjects as markers. How do I go about creating one manually?
This is my first time working with a class attached to a movieclip that is nested inside a class attached to a movie clip.I've tested all the properties and methods of PTListItem.as and they work properly but when I try to call them on the list item through PTListTop.as it returns undefined.The end goal is to dynamically load a checklist via a txt file.
I'm having trouble accessing the variables of my main class from other class objects UNLESS the objects are extensions of the Sprite or MovieClip class, have been added to the display list as a child of the main class instance, and I am able to use the this.parent.variable syntax. What I'm wondering is, isn't it possible to have a simple Object declared and instantiated, residing in memory and able to access another object's properties, without it being a part of the display list? Am I doing something stupid here?
Let me explain the code a bit in case it's a design flaw on my part. (I'm still learning AS3 and am not completely fluent with it yet).
I have a project with about 15 custom classes. There are no frame scripts in the .fla file. I am using it basically as a library only. The document class (let's call it Calculator for this example) extends the Sprite class and specifies the properties for the SWF dynamically. All other classes are instantiated from this main class. I have a bunch of variables that I want accessible to the different classes, so to keep them in a central location, I have declared them in the Calculator class, and am trying to access them from the other object instances.
(It should be noted that there ARE animations that need to play at times, so I'm assuming I can't NOT extend the MovieClip or Sprite class when creating the document class.
For this example, let's say there's another class called XMLLoader.as, whos instance was created from within the Calculator class, that needs some information stored in the Calculator class' variables. Incredibly simplified code for the two classes might look like this:
Document class:
Code: package { import flash.display.*; public class Calculator extends Sprite {
[Code].....
So, in the code above (I've bolded the most important lines in red), the only way I have been successful at accessing the variables declared in the document class from other classes is to extend the MovieClip or Sprite class when I create the custom class, add the object as a child of the document class (Calculator), create a generic variable cast to the datatype of the document class, and use it to access the variables.
This seems really excessive to me, and I'm wondering if it is, or if this is simply a limitation of ActionScript. Does, for instance, a URLLoader object actually need to be associated with a MovieClip included in the display list in order to access internal variables of the main class object? Is it me, or is that really convoluted? Shouldn't it be able to exist in memory separate of the display list and still have access to varibles declared from the main timeline (i.e. the document class in this case)? Is there no other syntax for accessing these elements? Have I done something limiting with how I've designed this or declared the variables?
I would like to know if it is the same to assign properties to my custom component in its own class, or from the parent document. Here I assign the property bottom in my custom component class:
I'm programming a kind of "Lights Off" game in Flash Professional (not Flash/Flex Builder)and it would be very nice if I could manage on/off state in a grphically designed Symbol like this[code]...
I'm using Google Maps with Flex 3. I'm using custom markers (custom icons) to mark places on the map. It works fine. The problem is that in some cases, I don't need a custom icon, I need the standard marker.
For example, how would I set condition C's icon to the standard marker:
public function iconSetter():void { if (condition A blah blah){myIcon=star; myPointsBuilder(); return;} if (condition B blah blah){myIcon=circle; myPointsBuilder(); return;}
[Code].....
I don't know how to revert to the default marker where I wrote "STANDARD MARKER".
I have the following situation:I have an event handler, that displays small messages in my application's statusbar.These messages get passes through by dispatching events from custom components.A simple message could be like "HTTP Error" or so.Now, the main event listener, in the main application file, listens to the event dispatched by any custom component,but seems to refuse listening to events dispatched by custom AS classes.Here is my code for the custom event:
I'm trying to loop through an array that i'm trying to create of a custom class that i've made, and i'm not really sure how to access the class, or if this is even possible.
Code: package { public class Product { private var productId:int;
[Code]...
ps. i've simplified the code to just show my end goal, so what i'm doing may look wierd. thx for any help
I have written a Class for skinning the UI. The Class works by taking a movie clip name from the stage passed to it and create the skin for it.So I create an Object from the class such as this:
Code: var CBox:UI = new UI();
Now what I wanted to do is reference a movie clip from the stage to this CBox variable, so when a call the Class methods it will know which movie clip to work on! Since currently I have to do this:
Code: CBox.Skinning(content_mc, "content", 100, 200); or CBox.Over(content_mc);
As you can see Im passing the movie clip, content_mc, everytime. I just want to avoid this by creating a reference.
i have a custom class which loads a couple of XMLs. i am creating an instance of this class within another class and i need to know when it is done loading in that parent class so that i can then call a function.
I want to create a custom class that will create textfields and return them to other classes, but it seems i cant get it working.First i created this custom class named "FormatText" extending Sprite class.Through constructor parameters i pass all the things i need to create a textfield and at the end i put it on the display list using addChild.If i do by this way and i create an istance of FormatText adding it to the display list, my textfield appears, but the problem is that i don't have full control of it, because this new textfield created is still considerated as FormatText's child, so if i try to change some textfield parameters, nothing happens.
Just an example: var txt:FormatText = new FormatText(param1, param2, param3, etc.). addChild(txt).
How do I create a custom event class similar to ActionScript? What I mean by that is a class that I can use to fire off my own events, send the necessary data.
I don't wanna use third-party libraries like YUI or jQuery to do it. My goal is to be able to send a event that looks like this.[code]...
I have class name : some.path.exampleclass and have to instantiate class (like getDefinitionByName()). Problem is that getDefinitionByName() makes class exampleclass and i need class with FULL name : some.path.exampleclass to pass it to custom component [url]...
So I've created box that looks like simulated wood in illustrator and save it as a "gif". I've imported it to the library in flash. I would like to create a custom class with it. Is this possible? Does it have something to do with the source box in Symbol Properties?
I'd like to learn how to create classes. For instance, I'd like to create a class that draws a custom shape. Like an arrow that is just a rectangle with a triangle on the end. I'd like to be able to do this sort of thing:
