Komentáre k AS3.0 KeyboardEvent WooDoo

Od: Ryan

Ryan — Mon, 11 Oct 2010 15:25:47 +0000

LOL, just ran into this issue. Funny that so many people encountered it. Basically on my own Flash app. if I hold Left Arrow + Up Arrow, no other keys can be detected, every other direction and combo seems to works fine. Nice to know from reading the comments that the problem is likely hardware related and not a problem with Flash itself.

Also, I confirmed it was hardware by going into wordpad, holding left, then pressing up, then pressing 1, it will not output 1. But, if you do any other two arrow keys then 1, the 1 outputs. So it’s surely the hardware, kind of a funny bug. Time to get a new keyboard.

Od: Wayne

Wayne — Thu, 07 Oct 2010 19:16:11 +0000

Perhaps the keyboard buffer needs to be flushed first
and thus delete any lingering ENTER key codes.
So how do you flush a buffer in Flash?

Od: Guilhermo

Guilhermo — Thu, 30 Sep 2010 17:01:57 +0000

I’m using a new keyboard, it works fine for 4 keys, but it wont work for the combinations envolving up and left keys togheter. I guess the problem still is about engineering thought.
I’m using XP, and a pretty new DELL keyboard.

Od: Jet

Jet — Wed, 13 May 2009 19:00:08 +0000

WIN 10,0,22,87

Work any combinations, even with 4 keys. But SPACE+UP+LEFT _sometimes_(???) doesn’t. Couldn’t figure out the reason and the way to reproduce, but it seems not to be only the hardware woodoo. IMHO if I can fire 4-keys combinations on my keyboard – it’s not an old one… not sure.

Good luck in your quest )

Od: Yummi

Yummi — Sun, 01 Mar 2009 08:30:59 +0000

that’s a hardware problem known as keyboard blocking, hence it’s different for every user. there’s not much you can do on the software side other than using different key combinations. modern keyboards don’t have that problem anymore.

Od: Third Cousin

Third Cousin — Thu, 05 Feb 2009 19:51:22 +0000

I ran across the same problem in a game I’m building in AS2 on a PC. corfix explanation seems legit. I tested the same game on the same computer and the only thing I did was change keyboards. It worked on the third keyboard I tried. It was a Logitech. The funny thing is the first keyboard I tested was also a Logitech but obviously it was a different model. I also found that different keyboards gave different results on detecting certain 3 key combinations. So it seems the solution would be avoiding 3 key combinations all together, sadly.

Od: corfix

corfix — Thu, 05 Feb 2009 16:50:36 +0000

This is a hardware problem. Maybe not a real problem, but architecture solution which occured long, long time ago. Engineers with limited resources of memory had to allocate all 1 key and 2 keys events. With resources left they tried to map as much 3 keys combinations as possible (thus some scenarious works, some not).
Nowadays when you buy a keyboard you have something like 50% chance to get a piece with new, redesigned architecture which can interprete all 3 keys combinations (and even 4 keys!).

Od: Paul

Paul — Wed, 04 Feb 2009 14:23:31 +0000

Perhaps this is why some game developers stick with the WASD keys and space as these seem to work fine. I have just tried it in my code in place of the arrow keys.

Od: Propecia

Propecia — Thu, 29 Jan 2009 20:14:55 +0000

Rocking all the latest updates here between MacOSX, FF, and Flash, and I’ve no problems at all

Od: Ben

Ben — Wed, 10 Dec 2008 02:15:38 +0000

if i hold up, i cant press left.
if i hold left, i cant press up.

all other combinations work fine – never had these problems with as2.

Firefox 3.0.4
Flash Player WIN 10,0,12,36
Windows XP SP.3
Dell Latitude E6500