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Olivier Galibert
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Reged: 09/21/03
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Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation
04/08/16 07:05 PM


> Can't make sense of the data that intercept (f24_swa) function is gathering. It looks
> like it reads 19 quads just for an asteroid, which doesn't have that many polygons
> even in its graphical representation. That doesn't seem right. But without really
> knowing what is going on I don't see how can I be of any help. If you would explain a
> bit your new code, what you learned, and what you still don't know, that would be
> most enlightening.

The tgp has a 32-bit wide data rom (built from 4 interleaved byte roms) connected to it. It's called user2 in the rom section of the driver. That's where the data is. All addresses point to 32-bits values, so 1 points to byte offset 4, 2 to 8, etc in case you look in a hex editor.

The first value is at address 0x10. It's 0x30, and that's the address of the indexation table.

So you go to 0x30 + 2*index. There you find two values, a count and an address. The count is a count of quads, the address is the start of the quad info. There are 2537 (0x9e9) entries

Each quad info takes 17 values:
- Four points, (x, y, z) coordinates for each (-> 12 values)
- The four coefficients of the plane equation. The first three are normed, so they're the normal to the plane. (-> 4 values)
- One integer I don't understand which is either 0, 1 or 2.

I checked the four points where always in the plane described by the plane equation, so that's cool. Drawing the quads in the 3d view is going to be hard because intercept is called with points in object coordinates. You're gonna have to build some kind of 3d model - collision model(s) table.

OG.







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* Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr 03/25/16 01:15 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/20/16 12:08 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Roman  04/20/16 12:55 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/20/16 01:23 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  04/20/16 04:06 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation SailorSat  06/25/16 09:03 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation John IV  04/20/16 05:24 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  04/20/16 09:15 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation jonwil  04/08/16 02:23 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation jonwil  04/05/16 01:28 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  04/05/16 05:15 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation AaronGiles  04/05/16 06:59 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  04/05/16 02:33 PM
. * May the Force be with you SmitdoggAdministrator  03/30/16 03:27 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  03/26/16 04:40 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation drewcifer  03/27/16 09:19 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  03/27/16 02:35 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation gregf  03/27/16 07:55 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  03/28/16 10:31 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  03/29/16 03:28 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  03/29/16 03:13 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  03/29/16 06:24 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Ville Linde  03/29/16 06:35 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Osso1  03/29/16 06:43 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  03/30/16 07:15 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation MooglyGuy  03/30/16 08:28 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  03/30/16 09:23 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  03/30/16 04:46 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  03/30/16 09:59 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  03/30/16 12:30 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Ville Linde  03/30/16 03:11 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  03/31/16 12:22 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Traso  04/07/16 05:37 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/02/16 06:52 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/04/16 02:53 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Ville Linde  04/04/16 05:37 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/04/16 09:26 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  04/04/16 10:55 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/05/16 07:15 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  04/05/16 10:39 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  04/06/16 05:57 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  04/06/16 07:48 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/07/16 11:42 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Ville Linde  04/07/16 05:28 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/07/16 09:04 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  04/07/16 11:16 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/08/16 06:32 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  04/08/16 07:05 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/08/16 11:22 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/09/16 12:03 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/10/16 07:50 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Ville Linde  04/11/16 07:45 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/11/16 08:36 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Ville Linde  04/11/16 08:50 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  04/11/16 10:42 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/15/16 03:50 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/15/16 11:35 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  04/19/16 07:39 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/20/16 12:49 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Haze  04/20/16 01:00 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  04/20/16 04:38 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/20/16 09:35 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  04/20/16 10:20 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/21/16 12:39 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/28/16 10:35 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/28/16 04:26 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation uman  04/29/16 01:12 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation lettuce  05/02/16 04:14 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation terminento  05/10/16 05:29 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation MooglyGuy  05/10/16 05:52 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation terminento  05/10/16 06:07 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Artman99  06/15/16 05:48 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  06/15/16 07:36 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Ville Linde  06/16/16 07:28 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  06/16/16 07:47 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Artman99  06/16/16 02:44 AM
. * Hi Bart Simo *nt* MooglyGuy  06/16/16 06:19 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  06/16/16 05:14 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Artman99  06/16/16 08:24 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation gamez fan  05/11/16 12:28 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation MooglyGuy  05/10/16 06:27 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation terminento  05/10/16 07:01 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation terminento  05/10/16 11:48 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  05/11/16 05:49 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  05/11/16 04:14 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  05/11/16 05:37 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation DarthMarino  05/11/16 02:57 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation terminento  05/11/16 02:18 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Anonymous  05/11/16 01:19 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  05/12/16 04:52 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation terminento  05/14/16 04:10 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Vas Crabb  05/11/16 04:25 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Anonymous  05/11/16 07:16 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Envisaged0ne  05/11/16 06:55 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Anonymous  05/11/16 07:34 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation terminento  05/11/16 08:36 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  04/22/16 05:16 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation LensLarque  04/15/16 11:47 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/11/16 09:40 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/13/16 07:40 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  04/13/16 09:33 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/13/16 10:34 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  04/14/16 05:02 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/14/16 05:57 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation MooglyGuy  04/14/16 01:41 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/14/16 06:22 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Master O  04/14/16 04:44 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Ziggy100  04/15/16 10:23 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Master O  04/15/16 11:42 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation joey35car  04/12/16 12:46 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/08/16 12:10 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  04/08/16 08:17 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/08/16 01:11 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/05/16 11:17 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  04/05/16 11:45 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/05/16 11:53 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/05/16 11:45 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/05/16 03:21 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Ville Linde  04/05/16 07:00 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/05/16 11:18 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Ville Linde  04/05/16 01:23 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/05/16 02:46 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation MooglyGuy  04/04/16 03:41 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  03/25/16 02:17 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  03/25/16 06:18 PM

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