Re: [Pysdl-devel] pflame test

[Peter N. <pn...@ya...>]

--- Pete Shinners <pe...@sh...> wrote:
> ok, i've finished my first decent version of python
> flame!
> 
> i've left enough comments in the actual source, but
> to help
> discussion... the program runs at about 15fps on my
> celeron
> 400 with a TNT2. currently, about 60% of the running
> time
> involves transferring the image the numeric python
> array
> to the sdl surface.
> 

it runs around 29-30 on a PIII 700 in Win98.  I
haven't tried it on the dual-CPU NT machines yet, but
it would be interesting to see because I've noticed
some things run unusually fast on them, like pyaliens.
 Does Python/SDL benefit from SMP somehow without
special thread programming? 

Incidentally has anyone tried compiling pySDL on a Mac
or BeOS?  There is a guy at school with CodeWarrior
who I could probably get to try it but I have no idea
what this would really entail.


> this transfer has to be done with an expensive
> python
> loop, but it will be simple to create a C extension
> to
> do it, at which point my little pflame should get
> above
> 24fps

I'll be interested in playing with that when I
actually take the trouble to figure it out...  I've
been wondering about using numpy for simple
transparency-aware collision detection.  I guess this
could still work without a fast transfer, though. But
I tried drawing simple gradients in a Python loop...I
can make a beautiful Wise Installer/Power Point cheesy
blue blend in about... 20-30 seconds.


> 
> the other thing i want to do is pixel-doubling.
> first
> i'll see if using SDL's scaled BLT is fast enough,
> i'll
> also compare that to doubling the image in numerical
> python.
> 


SDL has scaled blitting?

By the way I was looking at the alienlib thing from a
while back -- the generic entity-classes -- I've been
toying with a few different simple object classes and
am a little confused as to the best way to divide up
responsibilities (for performing movement, storing
data etc.) among the various base and derived classes.
 Any good info on the subject?  --P

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