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Flash player 8 onKeyUp bug September 19th 2006, mr.doob
What a silly bug made me lose quite a bit of time!!!

Ok, If you were planing of doing a game controled by the keyboard for Flash player 8 you'll find a little BIG issue. Using this code:

var keyListener:Object = new Object();
keyListener.onKeyDown = function() {
    trace("PRESSED -> Code: "+Key.getCode()+" ASCII: "+Key.getAscii()+" Key: "+chr(Key.getAscii()));
};
keyListener.onKeyUp = function() {
    trace("RELEASED -> Code: "+Key.getCode()+" ASCII: "+Key.getAscii()+" Key: "+chr(Key.getAscii()));
};
Key.addListener(keyListener);

Then, if you doing this sequence:
1. Press DOWN  (40)
2. Press RIGHT (39)
3. Release RIGHT (30)
4. Release DOWN (40)

You'll get this result exporting to with Flash player 7:
PRESSED -> Code: 40    ASCII: 0    Key:
PRESSED -> Code: 39    ASCII: 0    Key:
RELEASED -> Code: 39    ASCII: 0    Key:
RELEASED -> Code: 40    ASCII: 0    Key:

However, with Flash player 8 player you'll get this:
PRESSED -> Code: 40    ASCII: 0    Key:
PRESSED -> Code: 39    ASCII: 0    Key:
RELEASED -> Code: 39    ASCII: 0    Key:

As you can see, Flash player 8 forgets which Keys you pressed as soon as you press another one, but without releasing the previous ones. Which may cause that your ship goes down automaticly.

Well, atleast looks like they've fixed this issue already in Flash player 9.
8 comments written so far...

Amazing, how can they release new versions without testing this *basic* functionality? :D
Luckily they fixed in flash 9, but now everybody with flash8 can't play that mysterious game you're developing in the dark! Does it have ships and aliens? Then I'd love to test it!
September 20th 2006, sole
Teniendo en cuenta la penetración (perdón x la palabra) del player 9 ultimamente... lo mismo en pocas semanas-meses esto ya no es un problema... o al menos, un problema menor...
September 20th 2006, humphr3y
Well, I guess they fixed that too with flash player 8.5, but I can't be asked testing it now.
September 20th 2006, mr.doob
LARGA VIDA AL TEST!!
Mejor no lo reportes a su bigtracker o te denuncio por intrusismo laboral :D
September 20th 2006, xphere
Hey Ricardo,

I've got the same problem. I'm creating a loop based sequencer in flash wich containes a synthesizer emulator. you can play the synth with the computerkeyboard. Only when you make a chord with more keys, when released it keeps playing the sound of the first button pressed.
Since not everyone has flash player 9 i hope there is another solution... Do you know if there is a way to script around this bug?

Cheers,

erjee
September 25th 2006, erjee
well, I'm sure it must be a way, but I think I won't bother, I'll move directly to 8.5 - 9
September 25th 2006, mr.doob
ow sorry hehe, the name was Mr doob right?
September 25th 2006, erjee
Yep :)
September 25th 2006, mr.doob

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