Comments on: Handling Basic Animation with State MovieClips

By: Michael Williams

Michael Williams — Tue, 22 Jun 2010 14:14:14 +0000

Glad to hear it’s working now

By: Lisa

Lisa — Sat, 12 Jun 2010 22:17:22 +0000

Actually it was the movie clip I was using. I had to cut the frames, paste them into a new movie clip, then drag an instance of the new movie clip back onto the old one so that I could give it an instance name. Somehow I missed that in the instructions. It is working now. Thanks for the help and the great tutorial.

By: Michael Williams

Michael Williams — Sat, 12 Jun 2010 13:02:27 +0000

Cheers, Twan. Did that work, Lisa?

By: Twan

Twan — Fri, 11 Jun 2010 16:36:26 +0000

Have a look at my switchstate I put just above your post. I got the same error and fixed it by removing the old movieclip after adding the new one

By: Lisa

Lisa — Thu, 10 Jun 2010 20:24:05 +0000

In Corky.as when I remove this line:

removeChild(currentAnimationMovieClip);

The currentAnimationClip container displays all instance swaps ...so it the switching is working.

By: Lisa

Lisa — Thu, 10 Jun 2010 20:11:25 +0000

I gots a problem. I think I've done everything right... but clearly I have not.

I am using CS3 actionscript 3.0 and I am getting this error in the output window. (Corky is my equivalent of Avatar):

TypeError: Error #2007: Parameter child must be non-null. at flash.display::DisplayObjectContainer/removeChild() at Corky/switchState() at Game/onTick() at flash.utils::Timer/_timerDispatch() at flash.utils::Timer/tick() TypeError: Error #2007: Parameter child must be non-null. at flash.display::DisplayObjectContainer/removeChild() at Corky/switchState() at Game/onTick() at flash.utils::Timer/_timerDispatch() at flash.utils::Timer/tick() TypeError: Error #2007: Parameter child must be non-null. at flash.display::DisplayObjectContainer/removeChild() at Corky/switchState() at Game/onTick() at flash.utils::Timer/_timerDispatch() at flash.utils::Timer/tick()

By: Michael Williams

Michael Williams — Fri, 07 May 2010 19:29:02 +0000

Hey Twan,

Nice solution. Not sure what was causing the first one. Did you have your removeChild() at the end of the function, maybe?

By: Twan

Twan — Fri, 07 May 2010 12:03:35 +0000

Hmm I'm not sure what is going, it has something to do with my onTick and the fact that you remove the avatar before adding the new one i guess. I did manage to fix it though by doing the following:

public function switchState( newState:String ):void {

        if ( newState == "MovingLeft" ) {
            addChild( new Avatar_Left() );
        } else if ( newState == "MovingRight" ) {
            addChild( new Avatar_Right() );
        } else if ( newState == "MovingUp" ) {
            addChild( new Avatar_Up() );
        } else if ( newState == "MovingDown" ) {
            addChild( new Avatar_Down() );
        } else if ( newState == "StandingStill" ) {
            addChild( new Avatar_Default() );
        }
        removeChildAt(numChildren-2);

}

By: Twan

Twan — Fri, 07 May 2010 11:53:37 +0000

Again a great tutorial, everything works up untill the last step. As soon as i add the remove child i get the following error as soon as a i press a button to move my character

TypeError: Error #2007: Parameter child must be non-null.

Any idea´s ?

By: Michael Williams

Michael Williams — Mon, 02 Nov 2009 22:59:07 +0000

@tomdeaap: whoops, missed your comment somehow! Nice tip

@default0: That is also a nice tip! Thanks You’ve managed to combine State MovieClips with Divided Timelines; neat