The DOOM sources as originally released on December 23, 1997

README.TXT

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+
+Here it is, at long last.  The DOOM source code is released for your
+non-profit use.  You still need real DOOM data to work with this code.
+If you don't actually own a real copy of one of the DOOMs, you should
+still be able to find them at software stores.
+
+Many thanks to Bernd Kreimeier for taking the time to clean up the
+project and make sure that it actually works.  Projects tends to rot if
+you leave it alone for a few years, and it takes effort for someone to
+deal with it again.
+
+The bad news:  this code only compiles and runs on linux.  We couldn't
+release the dos code because of a copyrighted sound library we used
+(wow, was that a mistake -- I write my own sound code now), and I
+honestly don't even know what happened to the port that microsoft did
+to windows.
+
+Still, the code is quite portable, and it should be straightforward to
+bring it up on just about any platform.
+
+I wrote this code a long, long time ago, and there are plenty of things
+that seem downright silly in retrospect (using polar coordinates for
+clipping comes to mind), but overall it should still be a usefull base
+to experiment and build on.
+
+The basic rendering concept -- horizontal and vertical lines of constant
+Z with fixed light shading per band was dead-on, but the implementation
+could be improved dramatically from the original code if it were
+revisited.  The way the rendering proceded from walls to floors to
+sprites could be collapsed into a single front-to-back walk of the bsp
+tree to collect information, then draw all the contents of a subsector
+on the way back up the tree.  It requires treating floors and ceilings
+as polygons, rather than just the gaps between walls, and it requires
+clipping sprite billboards into subsector fragments, but it would be
+The Right Thing.
+
+The movement and line of sight checking against the lines is one of the
+bigger misses that I look back on.  It is messy code that had some
+failure cases, and there was a vastly simpler (and faster) solution
+sitting in front of my face.  I used the BSP tree for rendering things,
+but I didn't realize at the time that it could also be used for
+environment testing.  Replacing the line of sight test with a bsp line
+clip would be pretty easy.  Sweeping volumes for movement gets a bit
+tougher, and touches on many of the challenges faced in quake / quake2
+with edge bevels on polyhedrons.
+
+Some project ideas:
+
+Port it to your favorite operating system.
+
+Add some rendering features -- transparency, look up / down, slopes,
+etc.
+
+Add some game features -- weapons, jumping, ducking, flying, etc.
+
+Create a packet server based internet game.
+
+Create a client / server based internet game.
+
+Do a 3D accelerated version.  On modern hardware (fast pentium + 3DFX)
+you probably wouldn't even need to be clever -- you could just draw the
+entire level and get reasonable speed.  With a touch of effort, it should
+easily lock at 60 fps (well, there are some issues with DOOM's 35 hz
+timebase...).  The biggest issues would probably be the non-power of two
+texture sizes and the walls composed of multiple textures.
+
+
+I don't have a real good guess at how many people are going to be
+playing with this, but if significant projects are undertaken, it would
+be cool to see a level of community cooperation.  I know that most early
+projects are going to be rough hacks done in isolation, but I would be
+very pleased to see a coordinated 'net release of an improved, backwards
+compatable version of DOOM on multiple platforms next year.
+
+Have fun.
+
+John Carmack
+12-23-97

linuxdoom-1.10/CVS/Entries

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+/ChangeLog/1.14/Mon Feb  3 22:45:08 1997//
+/DOOMLIC.TXT/1.3/Sun Jan 26 07:44:56 1997//
+/FILES/1.1/Sun Jan 19 17:22:41 1997//
+/FILES2/1.1/Sun Jan 19 17:22:42 1997//
+/Makefile/1.6/Mon Feb  3 22:45:08 1997//
+/am_data.h/1.2/Tue Jan 21 18:59:56 1997//
+/am_map.c/1.4/Mon Feb  3 21:24:33 1997//
+/am_map.h/1.2/Tue Jan 21 18:59:56 1997//
+/d_englsh.h/1.1/Mon Feb  3 21:48:03 1997//
+/d_event.h/1.2/Mon Feb  3 22:01:47 1997//
+/d_french.h/1.3/Mon Feb  3 21:48:03 1997//
+/d_main.c/1.8/Mon Feb  3 22:45:09 1997//
+/d_net.c/1.3/Mon Feb  3 22:01:47 1997//
+/d_textur.h/1.1/Mon Feb  3 16:47:51 1997//
+/doomdata.h/1.5/Mon Feb  3 22:45:09 1997//
+/doomdef.h/1.9/Mon Feb  3 22:45:09 1997//
+/doomtype.h/1.2/Mon Feb  3 22:45:09 1997//
+/dstrings.h/1.4/Mon Feb  3 21:48:03 1997//
+/dutils.c/1.5/Mon Feb  3 17:11:23 1997//
+/dutils.h/1.4/Mon Feb  3 17:11:23 1997//
+/f_finale.c/1.5/Mon Feb  3 21:26:34 1997//
+/f_finale.h/1.1/Mon Feb  3 21:26:34 1997//
+/f_wipe.c/1.2/Mon Feb  3 22:45:09 1997//
+/f_wipe.h/1.1/Mon Feb  3 17:11:23 1997//
+/fpfunc.S/1.1/Sun Jan 19 17:22:43 1997//
+/g_game.c/1.8/Mon Feb  3 22:45:09 1997//
+/g_game.h/1.1/Mon Feb  3 21:34:47 1997//
+/hu_lib.c/1.3/Sun Jan 26 07:44:58 1997//
+/hu_lib.h/1.4/Mon Feb  3 16:47:52 1997//
+/hu_stuff.c/1.4/Mon Feb  3 16:47:52 1997//
+/hu_stuff.h/1.3/Sun Jan 26 07:44:58 1997//
+/i_dga.c/1.3/Sun Jan 26 07:44:58 1997//
+/i_ibm.c/1.3/Sun Jan 26 07:44:58 1997//
+/i_main.c/1.4/Mon Feb  3 22:45:10 1997//
+/i_pcnet.c/1.3/Sun Jan 26 07:44:59 1997//
+/i_sound.c/1.3/Sun Jan 26 07:44:59 1997//
+/i_sound.h/1.3/Sun Jan 26 07:44:59 1997//
+/i_svga.c/1.3/Sun Jan 26 07:44:59 1997//
+/i_unix.c/1.5/Mon Feb  3 22:45:10 1997//
+/i_x.c/1.6/Mon Feb  3 22:45:10 1997//
+/info.c/1.3/Sun Jan 26 07:45:00 1997//
+/info.h/1.3/Sun Jan 26 07:45:00 1997//
+/irix.c/1.3/Sun Jan 26 07:45:00 1997//
+/irix.h/1.3/Sun Jan 26 07:45:01 1997//
+/linux.c/1.3/Sun Jan 26 07:45:01 1997//
+/m_argv.c/1.1/Mon Feb  3 22:45:10 1997//
+/m_argv.h/1.1/Mon Feb  3 22:45:10 1997//
+/m_bbox.c/1.1/Mon Feb  3 22:45:10 1997//
+/m_bbox.h/1.1/Mon Feb  3 22:45:10 1997//
+/m_cheat.c/1.1/Mon Feb  3 21:24:34 1997//
+/m_cheat.h/1.1/Mon Feb  3 21:24:34 1997//
+/m_menu.c/1.7/Mon Feb  3 22:45:10 1997//
+/m_menu.h/1.1/Mon Feb  3 22:01:49 1997//
+/m_misc.c/1.6/Mon Feb  3 22:45:10 1997//
+/m_misc.h/1.1/Mon Feb  3 22:45:11 1997//
+/m_random.c/1.1/Mon Feb  3 22:45:11 1997//
+/m_random.h/1.1/Mon Feb  3 22:45:11 1997//
+/p_ceilng.c/1.4/Mon Feb  3 16:47:53 1997//
+/p_doors.c/1.4/Mon Feb  3 16:47:53 1997//
+/p_enemy.c/1.5/Mon Feb  3 22:45:11 1997//
+/p_floor.c/1.4/Mon Feb  3 16:47:54 1997//
+/p_inter.c/1.4/Mon Feb  3 22:45:11 1997//
+/p_lights.c/1.5/Mon Feb  3 22:45:11 1997//
+/p_local.h/1.3/Tue Jan 28 22:08:27 1997//
+/p_map.c/1.5/Mon Feb  3 22:45:11 1997//
+/p_maputl.c/1.5/Mon Feb  3 22:45:11 1997//
+/p_mobj.c/1.5/Mon Feb  3 22:45:12 1997//
+/p_plats.c/1.5/Mon Feb  3 22:45:12 1997//
+/p_pspr.c/1.5/Mon Feb  3 22:45:12 1997//
+/p_setup.c/1.5/Mon Feb  3 22:45:12 1997//
+/p_sight.c/1.3/Tue Jan 28 22:08:28 1997//
+/p_spec.c/1.6/Mon Feb  3 22:45:12 1997//
+/p_spec.h/1.3/Tue Jan 28 22:08:29 1997//
+/p_switch.c/1.3/Tue Jan 28 22:08:29 1997//
+/p_telept.c/1.3/Tue Jan 28 22:08:29 1997//
+/p_tick.c/1.4/Mon Feb  3 16:47:55 1997//
+/p_user.c/1.3/Tue Jan 28 22:08:29 1997//
+/r_bsp.c/1.4/Mon Feb  3 22:45:12 1997//
+/r_data.c/1.4/Mon Feb  3 16:47:55 1997//
+/r_draw.c/1.4/Mon Feb  3 16:47:55 1997//
+/r_local.h/1.4/Mon Feb  3 21:26:34 1997//
+/r_main.c/1.5/Mon Feb  3 22:45:12 1997//
+/r_plane.c/1.4/Mon Feb  3 16:47:55 1997//
+/r_segs.c/1.3/Wed Jan 29 20:10:19 1997//
+/r_things.c/1.5/Mon Feb  3 16:47:56 1997//
+/s_sound.c/1.6/Mon Feb  3 22:45:12 1997//
+/sounds.c/1.3/Wed Jan 29 22:40:44 1997//
+/sounds.h/1.3/Wed Jan 29 22:40:44 1997//
+/soundsrv.c/1.3/Wed Jan 29 22:40:44 1997//
+/soundsrv.h/1.3/Wed Jan 29 22:40:44 1997//
+/soundst.h/1.3/Wed Jan 29 22:40:45 1997//
+/st_lib.c/1.4/Mon Feb  3 16:47:56 1997//
+/st_lib.h/1.4/Mon Feb  3 16:47:56 1997//
+/st_stuff.c/1.6/Mon Feb  3 22:45:13 1997//
+/st_stuff.h/1.3/Thu Jan 30 19:54:22 1997//
+/sun.c/1.3/Thu Jan 30 19:54:22 1997//
+/tables.c/1.4/Mon Feb  3 16:47:57 1997//
+/tables.h/1.1/Mon Feb  3 16:47:57 1997//
+/tmap.S/1.1/Sun Jan 19 17:22:51 1997//
+/v_video.c/1.5/Mon Feb  3 22:45:13 1997//
+/v_video.h/1.2/Mon Feb  3 17:11:59 1997//
+/w_wad.c/1.5/Mon Feb  3 16:47:57 1997//
+/wadread.c/1.3/Thu Jan 30 19:54:23 1997//
+/wadread.h/1.3/Thu Jan 30 19:54:23 1997//
+/wi_data.h/1.3/Thu Jan 30 19:54:23 1997//
+/wi_stuff.c/1.7/Mon Feb  3 22:45:13 1997//
+/wi_stuff.h/1.4/Mon Feb  3 16:47:58 1997//
+/z_zone.c/1.4/Mon Feb  3 16:47:58 1997//
+/z_zone.h/1.1/Mon Feb  3 16:47:58 1997//

linuxdoom-1.10/CVS/Repository

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+/info/cvsroot/id/id_doom

linuxdoom-1.10/CVS/Root

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+/info/cvsroot/