Subject: Re: [stella] collision detection From: "C. Bond" <cbond@xxxxxxxxxxxxx> Date: Mon, 08 Sep 2003 16:43:43 -0700 |
Eckhard Stolberg wrote: > > After an attempt at 'optimizing' the collision detection in a port of > > Stella, I found that Freeway no longer detected collisions, but the > > other programs I tested were OK. Is there some strange trick used in > > Freeway to catch collisions between the chickens and cars? > > In Freeway all the cars are drawn with the same player. Also both > chicken are drawn with two copies of the same player. In order to > detect independent collisions for both chickens Freeway resets > the collision detection registers twice per scanline just before > the chicken is about to be displayed. > > Ciao, Eckhard Stolberg Thanks! That helped me track down and eliminate the problem. -- http://www.crbond.com ---------------------------------------------------------------------------------------------- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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