> 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
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