AS3.0 KeyboardEvent WooDoo

Friday, October 10th, 2008

WTF? I don’t know what’s wrong, and if this is a bug or anything, but I came across interesting issue. Let me first tell, that it seems it’s bug on Windows, or maybe just my Windows :) really do not know, I need you to help me. I need your test to let me find out what is the problem, because it seems that it works on my friend’ Mac. I’ve tried Flash Player 9.0.115 and 9.0.124.

Problems is in getting KeyboardEvent.KEY_DOWN for multiple keys. I’m working on some sport game in AS3 and I need to check for key kombination like Right Arrow + Down Arrow + Space, but it’s never fired up on my Windows. I thought it’s some logic what’s wrong in my game, so I’ve created simple pure AS3 example and there is problem as well. There is strange Woodoo, some combinations work, some do not :) I really do not see the logic. Here is example, just press and multiple Arrows and Space in same time. You can try simple key strokes, you will see red keys when key is pressed (KeyboardEvent.KEY_DOWN was received). When you release key, it just come back to its grey state. So please play and let me know your results. I need to know OS, Player version (included in example) and if you have same problems as me, or what does not work for you. (Click to movie, to gain focus)

And here is my Woodoo, I simply can not do this combinations

  • SPACE + LEFT ARROW + UP ARROW
  • SPACE + LEFT ARROW + DOWN ARROW
  • SPACE + RIGHT ARROW + DOWN ARROW
  • SPACE + RIGHT ARROW + UP ARROW - ATTENTION!!! I can do this combination

Next example, press and hold SPACE + LEFT ARROW, now press DOWN ARROW, KEY_DOWN event is not fired, just release SPACE while DONW ARROW is still pressed, and now KEY_DOWN event for DOWN ARROW is fired up. WTF ?

Please can you confirm my Woodoo. I need to find out, if this is Flash Player Bug, or maybe something else? Please post your result to comments. Thank you.

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This is some text prior to the author information. You can change this text from the admin section of WP-Gravatar  I'm living in Bratislava, Slovakia. I'm Senior Flex, AIR Developer for my own company Flexets. Read more from this author


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21 Comments


  1. sakri
    Visit Site
    October 10th, 2008

    on windows xp WIN 9,0,115,0

    All the combos work… except for SPACE + LEFT ARROW + UP ARROW… wtf indeed?!


  2. lharp
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    October 10th, 2008

    So this seems to be a bug only on Windows.
    Everything works fine on my Mac in both FP 9.0.124 Standalone and Plugin.
    So you found some bug?
    What about FP 10?


  3. daniel.sedlacek
    Visit Site
    October 10th, 2008

    Hi Franto, that’s a real woodoo, it fails for me too but in a different combination.

    SPACE + LEFT ARROW + UP ARROW - OK
    SPACE + LEFT ARROW + DOWN ARROW - NOT OK
    SPACE + RIGHT ARROW + DOWN ARROW - OK
    SPACE + RIGHT ARROW + UP ARROW - NOT OK

    Player 9,0,124,0
    System WinXP Pro SP2


  4. Piergiorgio Niero
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    October 10th, 2008

    fp 10.0.12 osx 10.5
    yes to all BUT no way on opposite keys


  5. Jacob Buck
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    October 10th, 2008

    I can do these:
    SPACE + LEFT ARROW + DOWN ARROW
    SPACE + RIGHT ARROW + UP ARROW

    All other work as they should.


  6. mond
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    October 10th, 2008

    vista, fp 9,0,124,0
    for me these do NOT work:
    SPACE + LEFT ARROW + UP ARROW
    SPACE + RIGHT ARROW + DOWN ARROW

    others work fine


  7. Roman
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    October 10th, 2008

    All combinations work fine (Win Vista Business, flash player 9,0,124,0 installed, notebook Lenovo ThinkPad R61)


  8. Dirss
    Visit Site
    October 10th, 2008

    hi!
    This a problem that I had too in AS2 and that I have always in AS3 too.
    Some combinations doesn’t want to work.. I never knew why..
    In my case SPACE+LEFT+UP doesn’t works.

    Regulary in my projects I have some key shorcuts to debug or help XML updates and thoses shortcuts work fine on my computer but sometimes they don’t. Even on mac (of what i could see it’s even worst on mac >_<.. but I just might had no luck)..

    I think the origin of this problem has no report to flash but more to the OS…
    I’ve never found any solution :/

    I think the best solution is to let the ability the the player to configure the keys ;)

    Good Luck!


  9. _nec
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    October 10th, 2008

    all combinations are OK at here, even 4keys as
    SPACE + LEFT + DOWN + RIGHT
    but for examlpe
    SPACE + LEFT + UP + RIGHT does not

    xp sp2
    firefox / chrome / ie6 9,0,124,0


  10. Franto
    Visit Site
    October 10th, 2008

    Guys thank you for your fast feedback, at least I know, I’m not alone with that problems, and it really seems, it’s OS specific. Still, if there are others with Mac and Linux, can you post your results as well? to be sure, it’s just Windows problems. As Dirss mentioned, it seems it could be Mac problem as well, till now I just have 1 Mac results, and it works


  11. mattjpoole
    Visit Site
    October 10th, 2008

    all combinations work fine for me (including opposite directions, with and without space).

    Win XP SP3, Firefox 3.0.3, FP 9.0.115.0


  12. Mario
    Visit Site
    October 10th, 2008

    Only this combination is NOT working for me:

    SPACE + LEFT ARROW + UP ARROW

    Windows Vista
    FireFox 3.0.3
    FP 9.0.124

    Cheers.


  13. Franto
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    October 10th, 2008

    Hmmm, so there are even correct ones :)


  14. Shimray
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    October 11th, 2008

    Everything works fine. OSX 10.5.5 / Safari 3.1.2 / Flash 9.0.124.0 debug


  15. Flo
    Visit Site
    October 11th, 2008

    # SPACE + LEFT ARROW + UP ARROW => Doesn’t work
    # SPACE + LEFT ARROW + DOWN ARROW => Work fine
    # SPACE + RIGHT ARROW + DOWN ARROW => Work fine
    # SPACE + RIGHT ARROW + UP ARROW => Work fine

    (WinXP SP2, flash player 9,0,124,0 installed, notebook Lenovo ThinkPad R61)


  16. sHTiF
    Visit Site
    October 12th, 2008

    Yep this seems to be Win only problem, had the same problem when i was creating a simple game in VC++, seems to me like it has something to do with win keyboard buffer so this is not Flash related. In VC++ i solved it by handling keyboard through DirectInput library but i don’t see a simple solution in Flash. :/


  17. sHTiF
    Visit Site
    October 12th, 2008

    Oh i forgot, in Flash Player 10 i can do all the combinations without a problem, but still dont think its Flash related.


  18. Iain
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    October 13th, 2008

    All combinations work for me, but you will find that different combinations work for different people. This is most likely because of the HARDWARE of the keyboard you are using, not the OS. Try swapping out your keyboard for another one.


  19. Franto
    Visit Site
    October 13th, 2008

    Hmm Iain, i thought about Keyboard hardware as well, it can be issue :) I don’t have 2 keyboards here, but if anyone have, can you test it please?

    Thank you

    And thanks Iain for hint :)


  20. judah
    Visit Site
    November 30th, 2008

    All combinations work on MacOSX, Flash Player 10 and Firefox 3.0.4.

    I would say give your users the option to use a joystick or gamepad but oops Flash Player doesn’t have it yet. Flash Player is only version 10. :P


  21. Ben
    Visit Site
    December 10th, 2008

    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

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