Subject: Re: [stella] lines From: Chris Wilkson - MCD <cwilkson@xxxxxxxxxxxxx> Date: Wed, 3 Dec 1997 10:40:20 -0800 (PST) |
> >Atari 2600 games with oblique or curved lines, like Laser Blast, Missile > >Command or Fishing Derby have always puzzled me. What is obvious on any > >other system becomes a challenge on the 2600. > >I was wandering if there's a more or less "standard" way to draw such > >lines. What do you think? > > Well, you'd have to use an object for the Missile Command or Laser Blast > lines. I'd imagine you'd RESMx at the beginning of the frame, and keep a > counter during the frame, incrementing it by a certain amount each scanline > (the amount determines the angle of the line), and when it overflows, do an > HMOVE by one pixel one way or the other. How does Stargate do it? Anyone know? (I think it's Stargate...) -Chris -- Stella list is Administered by krishna@xxxxxxxxxxxx <Glenn Saunders> Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/stella.html +-shameless plugs-------------------------------------------------------+ | Stella documentary at http://www.primenet.com/~krishna | | Nick's VCS links via http://www.primenet.com/~nickb/atariprg.htm | | Write the best game, win framed autographs of famous Atari alumni!! | +-----------------------------------------------------------------------+
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