[Haskell-cafe] FRP + physics / status of hpysics

[Roman Cheplyaka]

* Peter Verswyvelen <bugfact at gmail.com> [2009-03-07 18:34:10+0100]
> On Fri, Mar 6, 2009 at 10:39 PM, Roman Cheplyaka <roma at ro-che.info> wrote:
> 
> > > The blog
> > > seems to be inactive since december 2008; has development ceased?
> >
> > Sort of. One reason is that DPH does not seem to be ready for hpysics
> > yet, another one is that I don't see any potential users around (read: I
> > just need a kick in the ass).
> >
> 
> Is it a performance issue?

Yes. As Roman Leshchinskiy explained it's because parallel arrays are
not fused properly yet.
But it's quite trivial to modify Hpysics to use ordinary lists or
arrays, and I think it'll give reasonable performance.

> > > Integrating hpysics with Grapefruit might be a good topic for the
> > Hackaton,
> > > trying to make a simple game (e.g. Pong or Breakout) without using
> > recursive
> > > signal functions, but with correct collision response and
> > better-than-Euler
> > > integration, all handled by the physics engine. Other FRP engines could
> > be
> > > tried, but Grapefruit hacking is already a topic on the Hackaton, so it
> > > would combine efforts.
> >
> > Yes, I'm actively pondering Hpysics+Grapefruit (it's the primary reason
> > of my interest in Grapefruit). But first of all we need to get graphics
> > support into Grapefruit.
> >
> > Does your proposal re Hackathon indicate that you'd like to join?
> >
> 
> Yes, Thomas 'Bob' Davie and I already joined the Hackaton, but the wiki is
> not yet updated.I see you've joined too, cool

Great! I'll have more free time after March 15, and we can arrange an
IRC meeting to discuss this.

-- 
Roman I. Cheplyaka :: http://ro-che.info/
"Don't let school get in the way of your education." - Mark Twain