Re: > Could you post the code somewhere so we can experiment with it?
Here it is it's all in one file: pong-world.rkt <https://github.com/darrencruse/pong-world-racket/blob/master/pong-world.rkt> On Mon, Dec 29, 2014 at 8:05 AM, Matthias Felleisen <[email protected]> wrote: > > On Dec 28, 2014, at 9:51 PM, Darren Cruse wrote: > > One thing I can see is that on-draw is called for every on-tick on all > three platforms btw. > > And even in cases where the program is idling and on-tick has simply > returned the world state it was given unmodified. > > Is that normal I wonder? Part of me thought that since to-draw is a > function of the world state, and the world state hasn't changed, that it > would *not* call to-draw in that case. > > > I experimented with this 'optimization' and, if I recall correctly, it > didn't make much of a difference and got in the way of imperative world > programs. So I took it out. Mea culpa, I should have commented on this > experiment inside the code. > > > > (but it calls to-draw for every on-tick even on the Windows machine which > is using only 6% cpu - so maybe I'm wrong to look to that as the problem) > > > > My Mac-based experiments suggest that this call is not the cause of > performance problems. > > ;; --- > > Could you post the code somewhere so we can experiment with it? > > Thanks -- Matthias > > >
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