Subject: Re: (fwd) Re: [stella] GunFight 2600: One Limit Reached! From: Manuel Polik <manuel.polik@xxxxxxxxxxx> Date: Mon, 19 Feb 2001 10:50:25 +0100 |
Erik Mooney wrote: > Your way is faster by only 2 cycles (because you can remove the CLC.) > However, this version was posted to the list some time after that archived > message. After the subtraction, do > AND #$FC > PHP > which is exceedingly clever and short. That does exactly what we want - > if A is between 0 and 3 before the AND, the zero flag will be set, and so > ENAMx will be enabled. This only works if your missile height is a power > of two, though. Cool. So it _will_ be a power of two :-) > > >But still... wouldn't it be best to make the missile yellow like the > > >background, where there is no gun? The only other object actually > > >crossing that *invisible* missile would be the ball. Can't the ball just > > >have a higher priority than the misslie? > Unfortunately, no. You can only give the ball a higher priority than the > players, if you don't mind the playfield also having a higher priority. Aha. Would work then! I don't intend to use the playfield, so it may have any priority. I'm thinking of doing something very crazy... we'll see Greetings & thanks, Manuel - Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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Re: (fwd) Re: [stella] GunFight 260, Erik Mooney | Thread | Re: [stella] DASM (was: Qb: v0.04), Thomas Jentzsch |
Re: [stella] DASM (was: Qb: v0.04), Thomas Jentzsch | Date | Re: [stella] And now, something com, Thomas Jentzsch |
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