As a variant on the __proto__ method (which I gather is what the compiler
actually uses behind the scenes anyway) I also bundle the code into a static
method
Class A {
...
// dynamicMc (no library symbol) will be added and subclassed to mcSubClass
dynamicMc:MovieClip = McSubClass.addInstance(baseMC);
}
class McSubClass extends MovieClip{
function McSubClass {
//empty constructor
}
function init(){
//initialize mc - add dynamic graphics etc
}
static function addInstance (base_mc) {
var newMc;
var nd = base_mc.getNextHighestDepth();
newMc= base_mc.createEmptyMovieClip("mcSubClass"+nd,nd);
newMc.__proto__ = new McSubClass ();
newMc.init();
return newMc;
}
}
maybe mc.__proto__ == MyClass.prototype (below) is better than my
newMc.__proto__ = new McSubClass ()
my method (i picked up on this list) does have the side effect that the
constructor can't initialize the mc, hence the separate init call after the
__proto__ / constructor; all wrapped in one method so I don't forget
Rob
> Subject: Re: [Flashcoders] Programmatically instantiating a class that
> extends MovieClip.
> To: "Flashcoders mailing list" <[email protected]>
> Message-ID:
> <[EMAIL PROTECTED]>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> Hello :)
>
> it's easy, you must use __proto__
>
> AS2 - MyClass extend MovieClip !!!
>
> MyClass extends MovieClip {
>
> // ----o Constructor
>
> public function MyClass() {
>
> }
>
> }
>
> ....
>
> var mc = createEmptyMovieClip("myInstance", 1) ;
> mc.__proto__ == MyClass.prototype ;
> MyClass.call(mc) ;
>
> EKA + :)
>
>
>
>
> 2006/6/29, Scott Hyndman <[EMAIL PROTECTED]>:
> >
> > That's exactly what I mean. As a result you can do cool things like
> > reparenting -- like moving a button from one window to another. It
> > handles the MovieClip creation itself.
> >
> > A code example really isn't too easy, because the framework that
> > allows this to be possible is quite large. If you were really
> > interested, you could look at the code. Here's a link:
> >
> > http://tinyurl.com/jqtwv
> >
> > It's a gigantic class...so it might be difficult to work through. The
> > important method is createMovieClips(), which is called when a view
> > (the type of object that encapsulates movieclips) moves to a new
> > superview.
> >
> > Scott
> >
> > On 29/06/06, Jim Kremens <[EMAIL PROTECTED]> wrote:
> > > "Why not subclass object instead? Both ActionStep and ASwing work this
> > > way, then create movieclips on the fly. It's very nice to work with."
> > >
> > > So you never really subclass movieclip, you use composition instead.
> In
> > > other words, your class has a movieclip, but it isn't a movieclip.,,
> > >
> > > Is that what you mean, or am I missing the point? Can you give a
> small
> > code
> > > example?
> > >
> > > Thanks,
> > >
> > > Jim Kremens
----------- original message ----------------------------
Subject: Re: [Flashcoders] Programmatically instantiating a class that
extends MovieClip.
To: "Flashcoders mailing list" <[email protected]>
Message-ID:
<[EMAIL PROTECTED]>
Content-Type: text/plain; charset=UTF-8; format=flowed
Hello :)
it's easy, you must use __proto__
AS2 - MyClass extend MovieClip !!!
MyClass extends MovieClip {
// ----o Constructor
public function MyClass() {
}
}
....
var mc = createEmptyMovieClip("myInstance", 1) ;
mc.__proto__ == MyClass.prototype ;
MyClass.call(mc) ;
EKA + :)
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