Jason Summers' pattern collection
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jslife is the major part of Jason Summers' pattern collection and is frequently referenced as the source of a Life pattern discovered prior to 2013.
jslife-moving, maintained by Matthias Merzenich, includes the moving objects of Summers' jslife collection and incorporates older c/3 and 2c/5 collections by David Bell and Paul Tooke without modification. The collection focuses on elementary-based technology and includes elementary spaceships, puffers and rakes, wickstretchers and wavestretchers, as well as a few incomplete spaceship components, and is currently the primary reference source for such objects. It excludes large engineered spaceships and puffers (e.g. Caterpillar, Gemini), growing spaceships, and non-linear growth patterns like breeders.
Contents of jslife
The collection is organized by folder as follows:
- applications: patterns whose population over time is unusual, "high-level" patterns, and patterns designed to calculate or emulate something.
- c2-extended: c/2 spaceships, puffers, and rakes, by period
- fuses: some ways that linearly-repeating patterns can decay
- guns: spaceship guns, excluding "ordinary" glider guns, i.e. guns with an adjustable period, an unusual shape, or that fire multiple spaceships or unusual kinds of spaceships
- interactions: moving reactions that are supported by one or more guns or puffers, which move at a different velocity than the reaction itself
- misc: reactions that are interesting or useful and do not fit elsewhere
- osc: oscillators, by period
- osc-supported: oscillating patterns requiring support with glider guns or a simlar mexhanism
- slideguns: guns that fire each glider on a separate path
- synthesis: patterns of gliders that collide to form objects
velocity-xxx: spaceships, puffers, stretchers, etc., of velocty xxx (2c/5,
wicks
Extensible oscillators, mostly untamed.
Additional information about the "c2-extended" directory -----
This used to be a separate "rakes" collection, but I've incorporated it into this collection, and expanded it.
True-period rakes are known for *all* multiples of 8, and all multiples of 4 higher than 564. The files "var-072+8n.lif" and "var-???+24n.lif" are the starting points for building them.