Subject: Re: [stella] First steps From: Chris Wilkson <ecwilkso@xxxxxxx> Date: Mon, 10 Sep 2001 16:53:15 -0400 (EDT) |
On Mon, 10 Sep 2001, Glenn Saunders wrote: > I "think" in terms of a coordinate space where 0,0 is at the top left of the > screen and the scanline counter incrementing downward. It's been confusing > as it is dealing with this decrementing scanline counter. I hate that, but > it seems to be the standard way to do it on the 2600, having all the data > upside down, probably because BNE is a quicker way to end a loop than > testing for a given maximum value. Yeah, part of programming this beast is learning that your brain is a lot more flexible than Stella. It's pretty set in it's ways and not likely to change anytime soon. ;) > BTW, for those in the know, with rotating sprite games like Combat and > Indy500, how many of the 16 frames of sprite rotation animation are stored I think Combat only uses 5 images. Maybe less. Joe Decuir mentioned this in his talk at CGE, but I don't remember offhand. -Chris > > > > > _________________________________________________________________ > Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp > > > - > Archives (includes files) at http://www.biglist.com/lists/stella/archives/ > Unsub & more at http://www.biglist.com/lists/stella/ > - Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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