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Mail Archives: djgpp/1997/02/10/20:37:20

To: djgpp AT delorie DOT com
Subject: Re: Allegro joystick questions
Message-ID: <19970210.173501.4967.0.chambersb@juno.com>
References: <5dlf2r$sh4 AT organ DOT cs DOT indiana DOT edu>
From: chambersb AT juno DOT com (Benjamin D Chambers)
Date: Mon, 10 Feb 1997 20:32:51 EST

On 9 Feb 1997 16:20:27 -0500 jestandi AT cs DOT indiana DOT edu (Jeff Standish)
writes:
>I know that Allegro has some extra functions which work with the CH 
>FS-Pro
>joystick.  But will these work with any of the multi-function 
>joystick, or
>only the FS-Pro?  I ask because I've been checking out the local 
>stores,
>non of which have the FS-Pro, but lots of other of the more elaborate
>joysticks (like MS's Sidewinder).
The only difference between one joystick and another is what they return
for the different button states - ie, some use the the hihat as joystick
2 x & y axis, some use extra firing buttons by using joystick 2 button 1
and 2, et cetera... They'll all work, but you'll have to experiment to
figure out which buttons return what.

>
>Alternatively, is it possible to get Allegro to work with two 
>joysticks?
>I mainly ask because I've been writing a small space-flight 
>simulation,
>which means 6 degrees of freedom, and overloading things with keysyms 
>and
>the mouse gets awkward.
Just out of curiosity, what are the 6 degrees of freedom?  I know 5
(north/south, east/west, up/down, ana/kata, foreward/backward {the last
two are time, but people seem to like to think of time as a geometric
dimension <it is, but that gets _very_ confusing>}), but it's VERY hard
to real-time more than 3 (at least the way I'm thinking).

>
>And a final question, is it common to get noise from the joystick?  I 
>can
>leave the joystick in the neutral position, not even touching it, and
>every now and again the joystick position will jump to non-zero values 
>for
>one update, and then return to zero.  I'm assuming it's just noise 
>from
>joystick, but I can't be certain.
The same thing happens to me (so badly I can't use the joystick with some
games {even with Allegro}), I wonder what it is?

...Chambers

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