Subject: Re: [stella] variations on a theme From: Piero Cavina <p.cavina@xxxxxxxxxxxxx> Date: Tue, 20 Jan 1998 18:23:13 +0100 |
At 9:45 -0500 19-01-1998, Erik Mooney wrote: >> I think that it would be better to convert the code to the standard format, >> as this would allow other things like diagonal moving bombs. > >Can you do this, or do you want me to try? I think it would be enough if you could post here some hints, especially the parts of the code to be modified. >> Couldn't the already existing destroy-the-shields routine be generalized for >> use with bombs and player shots? >It's easier to copy the routine and change a >couple things than to try to shoehorn everything into one routine. yep.. >> But Atari SI allows you to hit the invaders even when they're invisible. >> This would be the difficult part. > >Don't the collision registers activate even when COLUPF is zero? I'm >pretty sure they do. The collision-detection hardware only checks PFx, >ENAMx, ENABL, and GRPxx, not the color registers. Sure?! It would be great... a matter of a few bytes of code. To make things work just like in Atari SI, the playfield (the invaders) should be turned on for the duration of the missile explosion. Ciao, P. -- 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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