Giles Edkins discovers a large number of Brian's
Brain oscillators using his own search program. Brian's Brain rule was
traditionally treated as too vigorous to have stable patterns. The first
oscillator has been discovered by Michael Sweney in 1999, 20+ years
after the rule has been defined!
Mirek Wojtowicz releases the next version of his MCell,
4.20. The new version introduces a new kind of DLLs - User Configurable DLLs
- that allow to define parameterized rules. It also offers many user
interface extensions. The full
list of news in version 4.20 is available here.
Prentice has defined and thoroughly explored the new CA family, called Weighted Generations.
The rule is a natural extension of the Generations
and Weighted Life families. The new
family has been implemented in MCell as a user-configurable DLL.
Mirek Wojtowicz releases the fourth version of his MCell.
The new version is even more complete - it handles 1D and 2D rules in von Neumann,
Moore, extended Neumann,
extended Moore, Hexagonal and Margolus neighborhoods.
list of news in version 4 is available here.
Gil Bub has created an interesting site with Cellular
Automata Examples. His first article covers cellular automata
application in modelling cardiac dynamics. The site also features a small
Java applet allowing exploring Greenberg Hastings model.
George Maydwell has released the second version of his popular
Cellular Automata explorer, SARCASim.
The new version offers DirectX full screen support, symmetry, and other
George Maydwell has released a Collidoscope,
a versatile and beautiful Cellular Automata screen saver for MS Windows.
Jason Rampe releases the updated version (27.05!) of his Visions
of Chaos (see July 2000). The new version clears the problems with high
resources demands and runs smoothly on all Windows versions.
John Elliott publishes the Cellsprings/DT, a
desktop (offline) version of his java applet for running various 2-dimensional Cellular
Automata (see June 2000).
Johan Bontes' Life32 v.2.0, the best Windows simulator of Game of
Life and related rules, entered the Beta-testing phase. The new version has
a much extended user interface, allows CA explorers for creating libraries
of handy patterns, offers running patterns in limited space size, handles
Hexagonal rules and von Neumann neighborhood, introduces a multi-document
interface, loads and saves patterns in BMP/GIF formats, loads patterns saved
in MCL format, and more.
Tim Tyler publishes a series of new Java applets:
- HexHAL (Hexagonal Hardware
- Crystal_1D (a new class of
self-reproducing cellular automata),
- Crystal_2D (template-based
self replication. a sequel to Crystal_1D),
- Particles (a particle simulator).
Ben Schaeffer releases version 2 of his powerful LifeMN
package. The new version offers even more tools for developing 2-state Weighted
Life rules. The new version is also capable of storing rules and
patterns directly in MCell format.
John Elliott continues the development of his Cellsprings
Java applet. Version 1.15 is capable of running rules defined in external
plugins, which John calls Springlets. The first springlet implements a class
of Hexagonal rules.
Jason Rampe releases the first public version of his uniquely
versatile and free program Visions
of Chaos. Visions of Chaos is a program that generates fractals,
Cellular Automata, attractors and other chaos related simulations. The
program covers a wide range of Cellular Automata, including the Ant
Automaton. Other CA highlights are the possibility of creating AVI movies
and MIDI music out of the simulations.
The program runs with 32-bit Windows, although Windows 95/98 users can have
problems with preparing the system with enough free system resources (about
95% are required).
Mirek Wojtowicz collects a large set of patterns for the
famous WireWorld automaton; they
are available in his MJCell Java applet and
in MCell 4 Beta.
John Elliott publishes the first version (currently in Beta) of Cellsprings, a java applet for running various 2-dimensional Cellular
Automata. Cellsprings gracefully replaces John's Webside CA applet and
introduces many new features, like the possibility of saving designed rules
and patterns to the server and a much more comfortable (and modern) user
Jeffrey Ventrella publishes a small yet very innovative Cells
application allowing developing CA rules by means of natural evolution. The
user's role is to judge each population as either bad, medium, or good.
Based on this judgement the rules evolve, preserving "good"
features and forgetting "bad" ones. After a short time rules are
getting more and more interesting!
Mirek Wojtowicz publishes the first 'release' version of his MJCell
The most important addition is the ability to load patterns available
on-line. The applet is accompanied by over 1000 such patterns. It runs now over 230 CA
rules, and for the first time allows users to define and experiment with their own
StarLogo 1.0, a
programmable modeling environment for exploring the workings of
decentralized systems, has been released. This new version, implemented in
Java, runs on all different types of computers. Most notably, it is the
first version of StarLogo to run on PCs.
Jim Tyler, webmaster of Lotus
Artificial Life, has released a superb "Diffusion"
Java applet allowing exploring gasses and other reversible cellular systems.
The applet runs 3 different neighbourhoods: Margolus, Q*Bert and Star of
David. All predefined automata are completely reversible!
Ben Schaeffer has released version 1.0 of his long-awaited
LifeMN CA explorer. LifeMN is a 2 state, 2 weight, configurable
neighbourhood, mouse driven, CA rules explorer for Windows 95/98. What makes this program exceptional in the
ease one can discover and develop new rules with. Most of Weighted
Life rules available in MCell were created with this tool. The program is available
for downloading from http://www.effectnet.com/bens/lifemn.htm.
P.S. I was lucky to see Beta of LifeMN 2.0. My advice is: stay tuned on Ben's
David Eppstein (http://www.ics.uci.edu/~eppstein/)
has found the first period 7 spaceship in Conway's Game of Life: .....*....*.....
***..........*** It's also the new speed - the spaceship travels 2 cells every 7 cycles (2c/7).
Stephen Silver comments that it's the first new velocity for four years.
The new version of MCell, 3.0, has been released.
The new version is especially attractive for programmers who get a possibility to write
plugins for MCell and to write more effective User DLLs. The full
list of news in version 3 is available here.
Michael Sweney discovers two great CA rules: Ebb&Flow and Brain 6
and constructs many amazing patterns for them. Ebb&Flow and Brain 6 are first (after
StarWars) non-classic CA rules with so many engineered patterns.
Michael Sweney discovers the first oscillator in the famous Brian's
Brain rule. As far as I know no stable patterns were known in the rule
Thanks to the courtesy of David Griffeath and the University of
Wisconsin Mirek's Cellebration has a mirror site in USA, at the address http://psoup.math.wisc.edu/mcell/.
Mirek Wojtowicz announces the first public Beta version of MJCell Java applet running over 120 Cellular Automata rules.
David Bell announces an updated archive of objects for the Day & Night Cellular Automata. Most new
patterns come from Paul Schick.
John Elliott revamps his very popular Webside
CA Java applet.
The new version (1.0) contains much enhanced user interface, many new rules and initial
Ben Schaeffer constructs a number of very interesting Weighted
Life rules. They all are implemented in MCell 2.11 and are described in the CA rules lexicon.