March 1998
- Describe Concept Stephen Zepp
- Describe Concept Jon A. Lambert
- Describe Concept J C Lawrence
- Describe Concept Jon A. Lambert
- Describe Concept J C Lawrence
- Describe Concept Vadim Tkachenko
- Tutorial: Let's build a Compiler! - Part XI: Lexical Scan Revisited Jon A. Lambert
- Tutorial: Let's build a Compiler! - Part XII: Miscellany Jon A. Lambert
- Tutorial: Let's build a Compiler! - Part XIII: Procedures Jon A. Lambert
- Tutorial: Let's build a Compiler! Chris Gray
- VEIL Network Protocol Brandon Gillespie
- Tutorial: Let's build a Compiler! - Part XIV: Types Jon A. Lambert
- Tutorial: Let's build a Compiler! - Part XV: Back to the Future Jon A. Lambert
- Tutorial: Let's build a Compiler! - Part XVI: Unit Construction Jon A. Lambert
- For Ling's FAQ Koster, Raph
- MUD Ratings jlsysinc.ix.netcom.com@ix.netcom.com
- Random Generation Tools Ling
- ANNOUNCE: DB Robin Carey
- THE DARKWHOLE TESTS J C Lawrence
- Magic as Metaphor J C Lawrence
- Magic as Metaphor J C Lawrence
- Magic as Metaphor Jon A. Lambert
- Magic as Metaphor J C Lawrence
- CT - A Hypothetical Session (mid 1995) J C Lawrence
- 2Cyberconf: An article J C Lawrence
- (long) AnarchyMOO Primary Log J C Lawrence
- (short) AnarchyMOO parting salute J C Lawrence
- AnarchyMOO purpose J C Lawrence
- (fwd) CODE RELEASE: [client] Spod! (Java mud client) J C Lawrence
- (fwd) CODE RELEASE: [client]: lyntin (hacker's client) 1.1b Released J C Lawrence
- DarkWhole Test #1 J C Lawrence
- DarkWhole Test #2 J C Lawrence
- DarkWhole test #3 J C Lawrence
- DarkWhole test #4 J C Lawrence
- DarkWhole test #5 J C Lawrence
- DarkWhole test Identity Crisis J C Lawrence
- The Craft of Adventure J C Lawrence
- What in THE Hell was that? Stephen Zepp
- What in THE Hell was that? Ben Greear
- What in THE Hell was that? J C Lawrence
- What in THE Hell was that? Jon A. Lambert
- (fwd) Varying Time Commitment Levels: what's an admin to do? J C Lawrence
- Hello, and a brief intro cimri
- Hello, and a brief intro Ben Greear
- (no title) Time limits? s001gmu@nova.wright.edu
- (no title) Time limits? Justin McKinnerney
- (no title) Time limits? J C Lawrence
- Speaking of Avatars Jon A. Lambert
- Speaking of Avatars Jon A. Lambert
- Speaking of Avatars J C Lawrence
- Speaking of Avatars Jon A. Lambert
- Re: Vadim Tkachenko
- META: Broken mail headers coder@ibm.net
- META: Broken mail headers Alex Oren
- META: Broken mail headers J C Lawrence
- META: Broken mail headers Alex Oren
- META: Broken mail headers J C Lawrence
- META: Broken mail headers Chris Gray
- META: Broken mail headers J C Lawrence
- META: Broken mail headers Caliban Tiresias Darklock
- META: Broken mail headers Chris Gray
- Turn-based MU*'s Sauron
- Balancing Addicts -> soft vs. hard enforcement cimri
- Balancing Addicts -> soft vs. hard enforcement Justin McKinnerney
- Balancing Addicts -> soft vs. hard enforcement J C Lawrence
- Balancing Addicts -> soft vs. hard enforcement Jon A. Lambert
- Balancing Addicts -> soft vs. hard enforcement Ling
- Balancing Addicts -> soft vs. hard enforcement Jon A. Lambert
- Balancing Addicts -> soft vs. hard enforcement Matt Chatterley
- Balancing Addicts -> soft vs. hard enforcement J C Lawrence
- Balancing Addicts -> soft vs. hard enforcement Jon A. Lambert
- Balancing Addicts -> soft vs. hard enforcement Matt Chatterley
- Balancing Addicts -> soft vs. hard enforcement Adam Wiggins
- Balancing Addicts -> soft vs. hard enforcement Joel Dillon
- SfD: Clientside Caching Nathan F Yospe
- SfD: Clientside Caching Jon A. Lambert
- SfD: Clientside Caching Nathan F Yospe
- SfD: Clientside Caching Chris Gray
- SfD: Clientside Caching Jon A. Lambert
- (subject missing) J C Lawrence
- Balancing Addicts Ling
- Balancing Addicts Richard Woolcock
- Balancing Addicts Ling
- Balancing Addicts J C Lawrence
- Transport layer (UDP vs TCP) Ben Greear
- Transport layer (UDP vs TCP) Niklas Elmqvist
- Transport layer (UDP vs TCP) Jon Leonard
- Transport layer (UDP vs TCP) Ben Greear
- Transport layer (UDP vs TCP) Jon Leonard
- Transport layer (UDP vs TCP) Ben Greear
- Transport layer (UDP vs TCP) Chris Gray
- Transport layer (UDP vs TCP) Niklas Elmqvist
- Transport layer (UDP vs TCP) Jon A. Lambert
- Transport layer (UDP vs TCP) Ben Greear
- Time Limits? Jon A. Lambert
- META: topic and thread culling (was Balancing Addicts -> soft vs. hard enforcement ) J C Lawrence
- (subject missing) J C Lawrence
- XShipWars J C Lawrence
- (fwd) INFO: [client] Chaco looking for new parent for Pueblo J C Lawrence
- SIMULATING FUTURE HISTORIES: THE NAU SOLAR SYSTEM SIMULATION & MARS SETTLEMENT J C Lawrence
- (fwd) Functional Security J C Lawrence
- (fwd) Functional Security Ling
- (fwd) Functional Security Chris Gray
- (fwd) Functional Security Matt Chatterley
- (fwd) Functional Security Miroslav Silovic
- (fwd) Functional Security Felix A. Croes
- (fwd) Functional Security J C Lawrence
- SIMULATING FUTURE HISTORIES s001gmu@nova.wright.edu
- Character development [was ] Matt Chatterley
- Character development [was ] J C Lawrence
- Character development [was ] Matt Chatterley
- Character development [was ] Travis Casey
- Character development [was ] J C Lawrence
- Character development [was ] Travis S. Casey
- Character development [was ] Marian Griffith
- Character development [was ] Travis S. Casey
- Character development [was ] Vadim Tkachenko
- Character development [was ] Travis Casey
- Character development [was ] Vadim Tkachenko
- Character development [was ] Travis Casey
- Character development [was ] Vadim Tkachenko
- Character development [was ] Marian Griffith
- Character development [was ] Vadim Tkachenko
- Character development [was ] Marian Griffith
- Character development [was ] s001gmu@nova.wright.edu
- Character development [was ] Marian Griffith
- Character development [was ] J C Lawrence
- Character development [was ] Cimri
- Character development [was ] J C Lawrence
- Character development [was ] s001gmu@nova.wright.edu
- Character development [was ] Caliban Tiresias Darklock
- Character development [was ] Caliban Tiresias Darklock
- Character development [was ] Vadim Tkachenko
- Character development [was ] Ben Greear
- Character development [was ] Matt Chatterley
- Character development [was ] J C Lawrence
- Character development [was ] Matt Chatterley
- Character development [was ] Travis S. Casey
- Character development [was ] J C Lawrence
- Character development [was ] Koster, Raph
- Character development [was ] J C Lawrence
- Character development [was ] Koster, Raph
- Character development [was ] Alex Bertoglio
- Character development [was ] J C Lawrence
- Character development [was ] J C Lawrence
- Character development [was ] John Bertoglio
- 3D engines for MUDs Niklas Elmqvist
- 3D engines for MUDs Chris Gray
- 3D engines for MUDs J C Lawrence
- 3D engines for MUDs Niklas Elmqvist
- 3D engines for MUDs Chris Gray
- 3D engines for MUDs Ling
- 3D engines for MUDs Koster, Raph
- 3D engines for MUDs Mike Sellers
- 3D engines for MUDs Niklas Elmqvist
- 3D engines for MUDs Koster, Raph
- 3D engines for MUDs Ling
- 3D engines for MUDs s001gmu@nova.wright.edu
- Dynamic Loading of Modules Niklas Elmqvist
- Dynamic Loading of Modules Greg Munt
- Dynamic Loading of Modules J C Lawrence
- Parlez vous NPC? Matt Chatterley
- Parlez vous NPC? Vadim Tkachenko
- Parlez vous NPC? Matt Chatterley
- Parlez vous NPC? Chris Gray
- Parlez vous NPC? Matt Chatterley
- Parlez vous NPC? Nathan F Yospe
- Parlez vous NPC? Matt Chatterley
- Dynamic Loading of Modules Niklas Elmqvist
- Dynamic Loading of Modules Chris Gray
- Dynamic Loading of Modules Jon A. Lambert
- World Persistence, flat files v/s DB v/s ?? Ben Greear
- World Persistence, flat files v/s DB v/s ?? Chris Gray
- World Persistence, flat files v/s DB v/s ?? Jon A. Lambert
- World Persistence, flat files v/s DB v/s ?? Greg Munt
- World Persistence, flat files v/s DB v/s ?? Chris Gray
- World Persistence, flat files v/s DB v/s ?? Matt Chatterley
- World Persistence, flat files v/s DB v/s ?? s001gmu@nova.wright.edu
- World Persistence, flat files v/s DB v/s ?? Vadim Tkachenko
- World Persistence, flat files v/s DB v/s ?? Vadim Tkachenko
- World Persistence, flat files v/s DB v/s ?? Matt Chatterley
- World Persistence, flat files v/s DB v/s ?? Ben Greear
- World Persistence, flat files v/s DB v/s ?? Vadim Tkachenko
- World Persistence, flat files v/s DB v/s ?? Joel Dillon
- World Persistence, flat files v/s DB v/s ?? Joel Dillon
- World Persistence, flat files v/s DB v/s ?? Vadim Tkachenko
- World Persistence, flat files v/s DB v/s ?? Matt Chatterley
- World Persistence, flat files v/s DB v/s ?? Chris Gray
- World Persistence, flat files v/s DB v/s ?? Ross Nicoll
- World Persistence, flat files v/s DB v/s ?? Ross Nicoll
- World Persistence, flat files v/s DB v/s ?? Matt Chatterley
- World Persistence, flat files v/s DB v/s ?? Vadim Tkachenko
- World Persistence, flat files v/s DB v/s ?? s001gmu@nova.wright.edu
- World Persistence, flat files v/s DB v/s ?? Joel Dillon
- World Persistence, flat files v/s DB v/s ?? Matt Chatterley
- World Persistence, flat files v/s DB v/s ?? Vadim Tkachenko
- World Persistence, flat files v/s DB v/s ?? J C Lawrence
- World Persistence, flat files v/s DB v/s ?? Chris Gray
- World Persistence, flat files v/s DB v/s ?? J C Lawrence
- World Persistence, flat files v/s DB v/s ?? Vadim Tkachenko
- World Persistence, flat files v/s DB v/s ?? Chris Gray
- World Persistence, flat files v/s DB v/s ?? J C Lawrence
- World Persistence, flat files v/s DB v/s ?? Jon A. Lambert
- World Persistence, flat files v/s DB v/s ?? J C Lawrence
- World Persistence, flat files v/s DB v/s ?? Ben Greear
- World Persistence, flat files v/s DB v/s ?? Matt Chatterley
- World Persistence, flat files v/s DB v/s ?? Ben Greear
- World Persistence, flat files v/s DB v/s ?? Jon A. Lambert
- World Persistence, flat files v/s DB v/s ?? J C Lawrence
- World Persistence, flat files v/s DB v/s ?? Joel Dillon
- World Persistence, flat files v/s DB v/s ?? Matt Chatterley
- World Persistence, flat files v/s DB v/s ?? Joel Dillon
- World Persistence, flat files v/s DB v/s ?? J C Lawrence
- World Persistence, flat files v/s DB v/s ?? Joel Dillon
- World Persistence, flat files v/s DB v/s ?? J C Lawrence
- World Persistence, flat files v/s DB v/s ?? Matt Chatterley
- World Persistence, flat files v/s DB v/s ?? J C Lawrence
- World Persistence, flat files v/s DB v/s ?? Adam Wiggins
- World Persistence, flat files v/s DB v/s ?? Ben Greear
- World Persistence, flat files v/s DB v/s ?? Orion Henry
- World Persistence, flat files v/s DB v/s ?? Ben Greear
- World Persistence, flat files v/s DB v/s ?? Nathan F Yospe
On Mon, 30 Mar 1998, Ben Greear wrote:
:On Mon, 30 Mar 1998, Orion Henry wrote:
:> This is where you can have a little fun. These records are people...
:> places.. things... whatever you need to use for your mud. Each contains
:> references (unique ID's, not pointers) to other records. Lets say that the
:> back end process ( the one that holds the "snapshot" ) holds a huge number
:> of records and the ones it dosnet have RAM for (if you dont have enough)
:> are written to disk. Your front end process (the MUD) holds less, say
:> MAX_RECORDS. Each time a refrence is dereferenced it checks the local
:> cache and if its not there its requests it from the back end process. When
:> the number of local records exceeds MAX_RECORDS it drops the oldes ones (
:> LRU or Clock algorithms will do nicely). Now dont panic... I see the
:> problems with this too. There's more.
:> 1) Whenever a record's reference is dereferenced, the front end process
:> fetches all the recrods associated with it... Thus, when you dereference
:> Boffo the Half-Troll you also bring over his moth eaten shirt. His deadly
:> tree branch. His manky underwear and the room he's in. (because you will
:> proboly reference all of this very shorty after looking at Boffo) This way
:> when you make a reference its (probobly) always there...
:> 2) Whenever a record is changed it is marked as dirty and schedueled for
:> upload back to the back end... otherwise its just forgotten when it falls
:> off the LRU list.
:This model would work fine for a MUD, but my game will have every object
:in motion of some kind. I'm using F=MA, and all the fun that goes with
:it, including a partial gravity computation (I'll re-compute every now and
:then, and adjust orbits accordingly.)
If all you're using is F=MA, there's no reason to compute motion when it is
not being observed. Even with the partial gravity computation. I assume you
use a third order two body equation of motion, for most cases, and a second
order expansion of the Hamiltonian (using precalculated constants) for more
complex systems. I would hate to think what the effect of doing a mass-mass
force calculation and extrapolating would be. (And have I really been using
sixth order equoms in my software for over four years? That's what this old
software development file says.) I've been doing a much more complex status
check (thermodynamics, fluid dynamics, friction depreciated mechanics, most
of the complex elements of complex bodies, but only when they are observed)
without having to keep anything but a bare minimum instantiated, po6 forbid
actually computing it all. The nice thing about physics is, it all works if
you watch it, but there's ways to get from point A to point B without going
straight down the line. And they often amount to folding the map... without
walking down the fold. In other words, calculate what you need to, estimate
what you can, and fudge what you have to. If you do it well enough, noone's
gonna ever find out. Or maybe someone will... "Hey, guess what! I think the
server doesn't actually make a tree fall in the forest if noone is there to
hear it! It just becomes fallen!"
:Basically, with the AI, the game should remain at almost constant levels
:of computation/action, regardless of the number of ppl logged on. Of
:course, many things will be just estimated, for example, a battle between
:two AI clans won't do a lot of the details if no one is watching...but
:the end results should be about the same.
Well... yes. But... why compute it at all? I mean, if it is something where
a computation can get you most of the intermediate... and randomized fudges
can get you something as good as... it seems wasteful to have the CPU going
for nothing. This does depend, of course, on the complexity of the AIs. For
really complex AIs, I pretend they are players too. In fact, I'm looking at
making the AIs remotely hosted and dialing them into the main computer, the
same way I would a PC.
:> Sockets and pipes would work well for this but (I'm not sure) but I think
:> that unix messages will be very fast for this implimentation.
:I'm using Java, so probably going to use sockets, as that seems to be
:the least common denominator across platforms. The DB itself will just
:be an object I instantiate in the server program...(and clients too I
:guess.)
Java for the host? I'm using it for my clients now (got to see how well the
Metrowerks java-to-native compilers for MacOS and Win32 work... they may be
just what I need.)
--
Nathan F. Yospe - Aimed High, Crashed Hard, In the Hanger, Back Flying Soon
Jr Software Engineer, Textron Systems Division (On loan to Rocketdyne Tech)
(Temporarily on Hold) Student, University of Hawaii at Manoa, Physics Dept.
yospe#hawaii.edu nyospe#premier.mhpcc.af.mil http://www2.hawaii.edu/~yospe/ - World Persistence, flat files v/s DB v/s ?? Ben Greear
- World Persistence, flat files v/s DB v/s ?? Vadim Tkachenko
- World Persistence, flat files v/s DB v/s ?? Nathan F Yospe
- World Persistence, flat files v/s DB v/s ?? J C Lawrence
- World Persistence, flat files v/s DB v/s ?? J C Lawrence
- World Persistence, flat files v/s DB v/s ?? Greg Munt
- World Persistence, flat files v/s DB v/s ?? Ben Greear
- World Persistence, flat files v/s DB v/s ?? Jon A. Lambert
- World Persistence, flat files v/s DB v/s ?? J C Lawrence
- World Persistence, flat files v/s DB v/s ?? J C Lawrence
- World Persistence, flat files v/s DB v/s ?? Chris Gray
- World Persistence, flat files v/s DB v/s ?? J C Lawrence
- Jukebox Vadim Tkachenko
- Another recruit for the list? Joel Dillon
- OT: Martin Keegan J C Lawrence
- Old code Joel Dillon
- Old code Michael Hohensee
- UML/Commercial v Free Muds Greg Munt
- UML/Commercial v Free Muds Nathan F Yospe
- UML/Commercial v Free Muds Jon A. Lambert
- Heightfield Terrain Rendering Paper Niklas Elmqvist
- (subject missing) J C Lawrence
- (fwd) Roleplaying J C Lawrence
- (fwd) Roleplaying s001gmu@nova.wright.edu
- (fwd) Roleplaying Katrina McClelan
- (fwd) Roleplaying Ling
- (fwd) Roleplaying J C Lawrence
- (fwd) Roleplaying Travis Casey
- Predicting future motion intelligently J C Lawrence
- META: New Mail server and ISP J C Lawrence
- (rec.games.mud.admin) Roleplaying (fwd) Nathan F Yospe
- Persistant storage.... My current idea. Ben Greear
- Persistant storage.... My current idea. Jon A. Lambert
- Persistant storage.... My current idea. Ben Greear
- Persistant storage.... My current idea. J C Lawrence
- Persistant storage.... My current idea. Ben Greear
- Persistant storage.... My current idea. J C Lawrence
- Persistant storage.... My current idea. Ben Greear
- Persistant storage.... My current idea. Chris Gray
- Persistant storage.... My current idea. Ben Greear
- Persistant storage.... My current idea. J C Lawrence
- Persistant storage.... My current idea. Ben Greear
- UML & CORBA Greg Munt
- [MUD-Dev]: smoothing J C Lawrence
- [MUD-Dev]: smoothing J C Lawrence