Detecting keys in Pocket PC Game.

[Guest]

Hi

I'm writing a small Pocket PC game in C# using the .NET Compact Framework. I'm overriding the OnKeyDown and OnKeyUp methods to handle game input. The problem is that the OnKeyDown mehtod isn't executed untill i release the arrow key. That way i cant make my space ship move left/right/up/down when you're pressing (and holding) down one of the arrow keys.

Some example code of a moving sprite/object whould be greatly appreciated!

 

[Chris Tacke, eMVP]

For moving sprites, there are several great MSDN articles. Start here:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnnetcomp/html/WrapGAPI1.asp
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnnetcomp/html/WrapGAPI2.asp
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnnetcomp/html/WrapGAPI3.asp

-Chris

Hi.

I'm writing a small Pocket PC game in C# using the .NET Compact Framework.

I'm overriding the OnKeyDown and OnKeyUp methods to handle game input. The
problem is that the OnKeyDown mehtod isn't executed untill i release the
arrow key. That way i cant make my space ship move left/right/up/down when
you're pressing (and holding) down one of the arrow keys.

 

[Guest]

Hi Chris, and thanks for your reply

I've implemented the GXInput class described in the WrapGAPI3.asp article. In my game loop i do input.KeyPressed((int))Keys.Left); and print the value to the screen (it returns a bool). The problem is still the same. It will only return true for a brief second the moment i release the hardware key on the emulator. It wont return true if it's beeing pushed down.

That's my main problem: I want to move up/down/left/right when the hardware buttons is beeing pushed.

 

[Geoff Schwab]

Hi Jonas,

The GXInput class provides methods for detecting when a key is just pressed
(was not pressed on the previous frame) or the key is currently pressed
(does not care about the previous frame). I have not seen a problem with
these before so it could be a hardware or driver issue.

Can you just set a flag when true is returned by your key press method and
then not clear it until a key up is returned? Kind of a hack but I don't
know what the problem could be. If this is on the emulator then I seem to
recall some kind of bug with this.

Geoff

Hi Chris, and thanks for your reply!

I've implemented the GXInput class described in the WrapGAPI3.asp article.

In my game loop i do input.KeyPressed((int))Keys.Left); and print the value
to the screen (it returns a bool). The problem is still the same. It will
only return true for a brief second the moment i release the hardware key on
the emulator. It wont return true if it's beeing pushed down.

That's my main problem: I want to move up/down/left/right when the

hardware buttons is beeing pushed.