Jason Summers' pattern collection

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 similar mechanism
• slideguns: guns that fire each glider on a separate path (slide guns and tethered rakes)
• synthesis: patterns of gliders that collide to form objects
• velocity-xxx: spaceships, puffers, stretchers, etc., of velocity xxx=(2c/5, c/2, c/3, c/4 diagonal, c/4 orthogonal, c/5 orthogonal, c/12 diagonal, other)
• wicks: extensible oscillators

There are also two useful readme files.

External links

• Jason Summers' pattern collection includes jslife and jslife-oversize collections
• jslife-moving