Hi Artyom!
Thanks for your response. It seems your tactic has worked. I was so focused
on programming "inside" the gloss parameter that I completely forgot about
programming in the "outside". Here is what I did (I picked MVar's):
myprog s = do
...
var <- newMVar w0
let loop w = do
w' <- step s w
putMVar var w'
loop w'
forkIO $ loop w0
simulateIO ... (\_ _ w -> fmap (fromMaybe w) $ tryTakeMVar var)
And it's working just fine!
Best regards,
Daniel Díaz.
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