Computer Science Canada

Using the space bar for input
Author:  Daetyrnis [ Tue Apr 03, 2007 5:38 pm ]
Post subject:  Using the space bar for input
Well, I'm working on a game and I've been using Input.KeyDown to detect user input. It detects the arrow keys fine (as it should), but then when looking at the Keyboard Module in the documentation, I discovered something. The space bar is an ORD, not a KEY! As far as I know, that means that SPACE is a value (as in, an integer), as opposed to the other buttons (such as arrows) being actual characters.

So, long story short, how can I use the space bar for input, preferably keeping my layout with Input.KeyDown.
Author:  Expirant [ Tue Apr 03, 2007 6:39 pm ]
Post subject:  Re: Using the space bar for input
I think this is what you meant. I just did a quick experiment to find space bar's ordinal value, then used the chr function (look it up) to do the same thing all those KEY_LEFT_ARROW etc. things do.

code:


var userInput : array char of boolean

loop
    Input.KeyDown (userInput)

    if userInput (chr (32) /* Space bar's ordinal value on PCs is 32 */) then
        put "This way works."
        exit
    end if
end loop



Hope that helps,
Expirant
Author:  Daetyrnis [ Tue Apr 03, 2007 7:38 pm ]
Post subject:  RE:Using the space bar for input
That worked wonderfully, thanks. ^_^

Ya' know, I was thinking that is was going to be something along those lines, using chr or ord. I just figured that it would be faster to ask here than look it up myself.

._.'
Author:  Geostigma [ Tue Apr 03, 2007 8:16 pm ]
Post subject:  RE:Using the space bar for input
Or you could use
code:
(' ')
like a normal person.
Author:  ericfourfour [ Tue Apr 03, 2007 11:18 pm ]
Post subject:  RE:Using the space bar for input
Geostigma is correct. There is no point in going out of your way to remember some number of a character when you can just type the character. I am pretty sure Turing did not come with a constant called KEY_SPACE_BAR because you can use ' '.
Author:  Expirant [ Wed Apr 04, 2007 10:25 am ]
Post subject:  Re: Using the space bar for input
I suppose using (' ') works as well, my bad.

Good call, Geostigma.
Author:  Daetyrnis [ Wed Apr 04, 2007 3:32 pm ]
Post subject:  RE:Using the space bar for input
Ah, that seems to work as well. ._.'

Thanks for your input Expirant, but Geostigma did provide a better answer. >_>

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