Subject: Re: [stella] yet another Asymmetrical playfield From: KirkIsrael@xxxxxxxxxxxxx Date: 30 Aug 2003 13:30:49 -0000 |
> At 08:59 PM 8/29/2003, Glenn wrote: > >I was wondering, why was Glenn so hot to do > >reflected assymetrical playfield... > > It was easier to encode the playfield bitmap to 4 8-bit wide playfield > register writes, leaving a single write to PF2 for both sides of the border. First off, your quote of my text makes me realize I mighta sounded more like a punk than I meant to...trust me, I trust your reasons for stuff I don't understand more than I trust my own stuff. I started to get the reasons why you went that route as I dug up the thread in Stella, but it was late when I wrote that. > It is still necessary to blank out the playfield every other line to be > able to do all the sprite stuff so you can see how cramped the timing is. Blank out the playfield? Does that leave holes? (looks at screensot) Guess so--but it looks pretty good actually, scanlines are pretty small, it's a decent effect. Even though in retrospect it was painfully "well duh" obvious, I had to learn the hard way that you *have* to draw (or not draw, in your case) an assymetrical playfield every scanline, unlike players you can't say "oh I'll just get a taller graphic by keeping the values in the playfield registers..." Oh, and I just went back and caught up on some of your journal entries, Glenn. You did a nice job explaining things, much better than the JoustPong journal (which saves most of its 'splaining for 2600 101) Cheers, Kirk -- KirkIsrael@xxxxxxxxxxxxx http://kisrael.com Indeed, the Russians' predisposition for quiet reflection followed by sudden preventive action explains why they led the field for many years in both chess and ax murders. --Marshall Brickman, Playboy 4/73 ---------------------------------------------------------------------------------------------- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
Current Thread |
---|
|
<- Previous | Index | Next -> |
---|---|---|
Re: [stella] yet another Asymmetric, Glenn Saunders | Thread | Re: [stella] yet another Asymmetric, Glenn Saunders |
Re: [stella] yet another Asymmetric, Glenn Saunders | Date | [stella] SID2TIA: First result, Manuel Polik |
Month |