November 2004
- NEWS: Why Virtual Worlds are Designed By Newbies - No, Really! (By R. Bartle) William Leader
- NEWS: Why Virtual Worlds are Designed By Newbies - No, Really! (By R. Bartle) Ola Fosheim Grøstad
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Richard A. Bartle
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Matt Mihaly
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Ola Fosheim Grøstad
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Ola Fosheim Grøstad
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Per Magne Bjørnerud
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Koster, Raph
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Richard A. Bartle
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Koster, Raph
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Ola Fosheim Grøstad
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Matt Mihaly
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Ola Fosheim Grøstad
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Wayne Witzke
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Ola Fosheim Grøstad
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Wayne Witzke
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Koster, Raph
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Richard A. Bartle
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Matt Mihaly
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Koster, Raph
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) ceo
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Matt Mihaly
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Wayne Witzke
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Eric Random
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Ola Fosheim Grøstad
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Ted L. Chen
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Eric Random
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) J C Lawrence
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Ola Fosheim Grøstad
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Richard A. Bartle
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Ola Fosheim Grøstad
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Hans-Henrik Staerfeldt
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Hans-Henrik Staerfeldt
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Lee Sheldon
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Ola Fosheim Grøstad
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) ceo
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Dana V. Baldwin
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) J C Lawrence
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Matt Mihaly
- NEWS: Why Virtual Worlds are Designed By Newbies - No, Really (By R. Bartle) Martin Keegan
- NEWS: Why Virtual Worlds are Designed By Newbies - No, Really (By R. Bartle) Mike Rozak
- NEWS: Why Virtual Worlds are Designed By Newbies - No, Really (By R. Bartle) Martin Keegan
- NEWS: Why Virtual Worlds are Designed By Newbies - No, Really (By R. Bartle) Mike Rozak
- NEWS: Why Virtual Worlds are Designed By Newbies - No, Really (By R. Bartle) Richard A. Bartle
- NEWS: Why Virtual Worlds are Designed By Newbies - No, Really (By R. Bartle) Ola Fosheim Grøstad
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By R. Bartle) Koster, Raph
- Richard A. Bartle talks MUD Design Ken Snider
- Richard A. Bartle talks MUD Design Davion Kalhen
- Richard A. Bartle talks MUD Design Wayne Witzke
- Richard A. Bartle talks MUD Design Richard A. Bartle
- Richard A. Bartle talks MUD Design Dana V. Baldwin
- Richard A. Bartle talks MUD Design Johan
- Richard A. Bartle talks MUD Design Miroslav Silovic
- Richard A. Bartle talks MUD Design Otis Viles
- Richard A. Bartle talks MUD Design Miroslav Silovic
- Richard A. Bartle talks MUD Design Otis Viles
- Richard A. Bartle talks MUD Design Damion Schubert
- Richard A. Bartle talks MUD Design Douglas Goodall
- Richard A. Bartle talks MUD Design Miroslav Silovic
- Richard A. Bartle talks MUD Design GZ
- Richard A. Bartle talks MUD Design Ted L. Chen
- Richard A. Bartle talks MUD Design Douglas Goodall
- Richard A. Bartle talks MUD Design Ted L. Chen
- Richard A. Bartle talks MUD Design Ken Snider
- Richard A. Bartle talks MUD Design Kirinyaga
- Richard A. Bartle talks MUD Design Davion Kalhen
- NEWS: Why Virtual Worlds are Designed By Newbies - No, Really! (By R. Bartle) William Leader
- ADMIN: The definitions of "What is role-playing?" J C Lawrence
- Semireliable UDP-based protocol development Scott Hilbert
- Semireliable UDP-based protocol development Mark Terrano (XBOX)
- Semireliable UDP-based protocol development Jeremy Gaffney
- The Lag monster... Harlan Beverly
- The Lag monster... Ben Carter
- The Lag monster... J C Lawrence
- The Lag monster... Amanda Walker
- The Lag monster... Miroslav Silovic
- The Lag monster... Morris Cox
- The Lag monster... Miroslav Silovic
- How many UDP sockets to use? PizaZ
- How many UDP sockets to use? Jon Mayo
- How many UDP sockets to use? Michael Montague
- JOB/RESUME: Cryptic Studios Needs Heroes! Serdar Copur
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By Chris Duesing
- NEWS: Why Virtual Worlds are Designed By Newbies -No, Really! (By Chris Duesing
- The Root of the Tree (was NEWS: Why Virtual Worlds ...) David Kennerly
- The Root of the Tree (was NEWS: Why Virtual Worlds ...) neild-mud@misago.org
- The Root of the Tree (was NEWS: Why Virtual Worlds ...) David Kennerly
- The Root of the Tree (was NEWS: Why Virtual Worlds ...) neild-mud@misago.org
- The Root of the Tree (was NEWS: Why Virtual Worlds ...) David Kennerly
- The Root of the Tree (was NEWS: Why Virtual Worlds ...) Ola Fosheim Grøstad
- The Root of the Tree (was NEWS: Why Virtual Worlds ...) Hans-Henrik Staerfeldt
- The Root of the Tree (was NEWS: Why Virtual Worlds ...) David Kennerly
- The Root of the Tree (was NEWS: Why Virtual Worlds ...) ceo
- The Root of the Tree (was NEWS: Why Virtual Worlds ...) olag@ifi.uio.no
- The Root of the Tree (was NEWS: Why Virtual Worlds ...) David Kennerly
- The Root of the Tree (was NEWS: Why Virtual Worlds ...) Koster, Raph
- The Root of the Tree (was NEWS: Why Virtual Worlds ...) David Kennerly
- The Root of the Tree (was NEWS: Why Virtual Worlds ...) Koster, Raph
- The Root of the Tree (was NEWS: Why Virtual Worlds ...) David Kennerly
- The Root of the Tree Eric Random
- The Root of the Tree David Kennerly
- Early Attempts at Slaying the Lag Monster Greg Boyd
I have been reading the lag discussion with interest because I have
been doing some research on earlier mechanisms to combat latency in
virtual worlds.
I did not want to pollute the original lag monster thread so I will
ask it as a parallel note.
The question involves two older ways of solving lag problems,
particularly in the early 1990's.
1. Smoothing or "dead reckoning" (I have found some information
on it - not as rare as case #2)
I saw that Amanda mentioned "smoothing" as one of the ancient ways
to combat lag. I have also read about this referred to as using a
"dead reckoning" algorithm. In short, you take position, velocity,
and perhaps other physical elements and use
interpolation/extrapolation to let the client see smoothly moving
objects even if there is some congestion or dropped packets.
Clearly this allows you to also send less packets to the user.
I have found references to this type lag fighting technology for
virtual worlds as early as the early 1990's in the military program
called SIMNET. Specifically, I have an electrical engineering
article from 1995.
It might have been going on in early commercial games too, but I'm
not sure. I think it has probably been going on in the military as
far back as the 1980's because SIMNET is pretty old, but I'm not
sure about this either.
Question 1: Does anyone have any article references I could find
describing this technology in detail before 1995?
2. Internal clock synch and adjustment (even more interesting for
me - harder to find examples of this)
A data packet contains information for rendering an object in
virtual space and has a time stamp. When this data packet is
sent, it interrupts the game and "resets" some internal clock on
the client computer so that it is synched with the primary game
computer.
OR
Similar to the example above except the client computer adjusts
some base clock offset value by calculating a difference between
its current internal clock and the time stamp on the received
packet. (I have less of an idea how this worked in practice)
Question 2: Does anyone know of any references describing this
technology before 1995? This one has been tougher for me.
Thank you for thinking about this with me. I would appreciate any
leads at all.
Greg - Early Attempts at Slaying the Lag Monster Amanda Walker
- Early Attempts at Slaying the Lag Monster Morris Cox
- Slaying the Lag Monster Kirinyaga
- [ssows] thinking about EQ2 - kill locking (fwd) J C Lawrence
- [ssows] thinking about EQ2 - kill locking (fwd) Ken Snider
- [ssows] thinking about EQ2 - kill locking (fwd) Vincent Archer
- [ssows] thinking about EQ2 - kill locking (fwd) Ola Fosheim Grøstad
- [ssows] thinking about EQ2 - kill locking (fwd) Michael Hartman
- [ssows] thinking about EQ2 - kill locking (fwd) Chek Yang FOO
- [ssows] thinking about EQ2 - kill locking (fwd) Tom "cro" Gordon
- NEWS: Security officials to spy on chat rooms Mike Rozak
- [ssows] thinking about EQ2 (fwd) J C Lawrence
- [ssows] thinking about EQ2 (fwd) Michael Oxford
- [ssows] thinking about EQ2 - kill locking Dread Quixadhal
- [ssows] thinking about EQ2 - kill locking Morris Cox
- [ssows] thinking about EQ2 - kill locking Jason Downs
- Time Limited MUDs and Dead Horses Revived (was: Why Virtual Worlds are Designed by Newbies) Peter Keeler
- Time Limited MUDs and Dead Horses Revived (was: WhyVirtual Worlds are Designed by Newbies) John Buehler
- In Game Family Trees (Was: Time Limited MUDs) William Leader
- In Game Family Trees (Was: Time Limited MUDs) Johan A
- In Game Family Trees (Was: Time Limited MUDs) Amanda Walker
- In Game Family Trees (Was: Time Limited MUDs) Matt Mihaly
- Challenging the grind - take 2 Vincent Archer
- Time limited worlds (Was NEWS: Why Virtual Worlds are Designed By Newbies - No, Really (By R. Bartle)) Mike Rozak
- Time limited worlds (was: Why Virtual Worlds are Designed by Newbies) Mike Rozak
- Distributed virtual worlds (Was NEWS: Why Virtual Worlds are Designed By Newbies - No, Really (By R. Bartle)) Mike Rozak
- Distributed virtual worlds (Was NEWS: Why Virtual Worlds are Designed By Newbies - No, Really (By R. Bartle)) Wayne Witzke
- Distributed virtual worlds (Was NEWS: Why Virtual Worlds are Designed By Newbies - No, Really (By R. Bartle)) Yannick Jean
- Distributed virtual worlds (Was NEWS: Why VirtualWorlds are Designed By Newbies - No, Really (By R. Bartle)) Mike Rozak
- Distributed virtual worlds (Was NEWS: Why Virtual Worlds are Designed By Newbies - No, Really (By R. Bartle)) Sean Kelly
- Distributed virtual worlds Ola Fosheim Grøstad
- UI Design in MMOs Derek Licciardi
- UI Design in MMOs Mike Rozak
- UI Design in MMOs Mike Rozak
- UI Design in MMOs Sean Howard
- UI Design in MMOs Tom "cro" Gordon
- UI Design in MMOs David Kennerly
- UI Design in MMOs Nathan Rogers
- UI Design in MMOs Jason Murdick
- UI Design in MMOs Amanda Walker
- UI Design in MMOs rjw
- UI Design in MMOs Johan A
- UI Design in MMOs Derek Licciardi
- UI Design in MMOs rjw
- UI Design in MMOs Damion Schubert
- UI Design in MMOs Mike Rozak
- UI Design in MMOs Paolo Piselli
- UI Design in MMOs Mike Rozak
- UI Design in MMOs Ghilardi Filippo
- UI Design in MMOs Derek Licciardi
- UI Design in MMOs Mike Rozak
- UI Design in MMOs Corey Cauble
- Making the Customer Pay for Patch Bandwidth Michael Hartman
- Making the Customer Pay for Patch Bandwidth Robert "kebernet" Cooper
- Making the Customer Pay for Patch Bandwidth Michael Hartman
- Making the Customer Pay for Patch Bandwidth Byron Ellacott
- Making the Customer Pay for Patch Bandwidth Balthazaar
- Distributed virtual worlds (Was NEWS: Why Virtual Worlds are Designed By Newbies - No, Really (By R. Bartle)) Mike Rozak
- Time limited worlds (was: Why Virtual Worlds areDesigned by Newbies) Mike Rozak