Ethanagor wrote:This ship, dubbed the Serval in the "unrecognized CA" thread, can be reflected by many still lifes, one of which even generates another ship going the opposite way. Is there any way to make these into loops or oscillators?
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Some One Time Reflectors and other interactions
High period oscillators and guns are generally made out of interactions where the still life or small oscillator is restored after interaction with the glider. In some very lucky cases you may have a pair of interactions which alternate between two small objects, restoring the first object after the second interaction. A search for interactions of this kind in CGoL was conducted by Gabriel Nivasch using
sngdetect (stable and Glider), which was unsuccessful - though the half-baked knightship is based on a single interaction of this sort, where the SL is unchanged but moved. There is some other discussion of this idea on the forum - search for "fluff relays".
Edit:
Here's an unstablised wickstrecther with surprising behaviour:
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x = 8, y = 71, rule = B2ac3n/S
2bo2bo2$2bo2bo2$2bo2bo3$3b2o2$2b4o2$o6bo2$2b4o$3b2o4$bob2obo2$bob2obo
3$3b2o2$2bo2bo2$2bo2bo2$2bo2bo3$3b2o2$2b4o2$o6bo2$2b4o$3b2o4$bob2obo2$
bob2obo3$3b2o2$2bo2bo2$2bo2bo2$2bo2bo3$3b2o2$2b4o2$o6bo2$2b4o$3b2o4$bo
b2obo2$bob2obo!
The
5S project (Smallest Spaceships Supporting Specific Speeds) is now maintained by AforAmpere. The latest collection is hosted on
GitHub and contains well over 1,000,000 spaceships.
Semi-active here - recovering from a severe case of
LWTDS.