It turns out that the Double Rotate rule has been studied recently by Kenichi Morita. (It is formulated as a partitioned CA, instead of using alternating neighborhoods.)
https://ir.lib.hiroshima-u.ac.jp/00052559
See section 4.3 on "ESPCA-01caef", which is its identifier in Morita's numbering ...
Search found 2 matches
- November 22nd, 2023, 7:52 am
- Forum: Other Cellular Automata
- Topic: The Single Rotation Rule
- Replies: 48
- Views: 35005
- November 9th, 2023, 7:57 am
- Forum: Other Cellular Automata
- Topic: The Single Rotation Rule
- Replies: 48
- Views: 35005
Re: The Single Rotation Rule
In addition to the "Double Rotate" rule already discussed, there are two other similar variants. Like Double Rotate, they have the same pop-4 spaceships as Single Rotate, while avoiding indestructible structures.
1 clockwise; 3 half-turn
0,2,8,3,1,5,6,14,4,9,10,13,12,11,7,15
(The holes in a filled ...
1 clockwise; 3 half-turn
0,2,8,3,1,5,6,14,4,9,10,13,12,11,7,15
(The holes in a filled ...