## snoitareneG Rules

For discussion of other cellular automata.

### snoitareneG Rules

Has anybody messed around with snoitareneG rules? These are reverse generations rules, cells take time to be born (but still take up space). I have created 3 snoitareneG rules, but they are all explosive. I made sgorF (Frogs), srallipretaC (Caterpillars), and sraWratS (StarWars).
`@RULE sgorF@TABLEn_states:3neighborhood:Mooresymmetries:permutevar a = {0,1,2}var b = avar c = avar d = avar e = avar f = avar g = avar h = a0,1,1,1,0,0,0,0,0,20,1,1,1,1,0,0,0,0,22,a,b,c,d,e,f,g,h,11,0,0,0,0,0,0,0,0,01,1,1,1,0,0,0,0,0,01,1,1,1,1,0,0,0,0,01,1,1,1,1,1,0,0,0,01,1,1,1,1,1,1,0,0,01,1,1,1,1,1,1,1,0,01,1,1,1,1,1,1,1,1,01,1,1,1,1,1,1,1,1,0`

`@RULE srallipretaC@TABLEn_states:4neighborhood:Mooresymmetries:permutevar a = {0,1,2,3}var b = avar c = avar d = avar e = avar f = avar g = avar h = a0,1,1,1,0,0,0,0,0,30,1,1,1,1,1,1,1,0,30,1,1,1,1,1,1,1,1,33,a,b,c,d,e,f,g,h,22,a,b,c,d,e,f,g,h,11,0,0,0,0,0,0,0,0,01,1,1,1,0,0,0,0,0,01,1,1,1,1,1,1,1,1,0`

`@RULE sraWratS@TABLEn_states:4neighborhood:Mooresymmetries:permutevar a = {0,1,2,3}var b = avar c = avar d = avar e = avar f = avar g = avar h = a0,1,1,0,0,0,0,0,0,33,a,b,c,d,e,f,g,h,22,a,b,c,d,e,f,g,h,11,0,0,0,0,0,0,0,0,01,1,0,0,0,0,0,0,0,01,1,1,0,0,0,0,0,0,01,1,1,1,1,1,1,0,0,01,1,1,1,1,1,1,1,0,01,1,1,1,1,1,1,1,1,0`
Proud owner and founder of Sakagolue
`x = 17, y = 10, rule = B3/S23b2ob2obo5b2o\$11b4obo\$2bob3o2bo2b3o\$bo3b2o4b2o\$o2bo2bob2o3b4o\$bob2obo5bo2b2o\$2b2o4bobo2b3o\$bo3b5ob2obobo\$2bo5bob2o\$4bob2o2bobobo!`

(Check gen 2)

Saka

Posts: 2494
Joined: June 19th, 2015, 8:50 pm
Location: In the kingdom of Sultan Hamengkubuwono X

### Re: snoitareneG Rules

c/20 orthogonal, reminds me of the 2x2 c/8 diagonal.
`x = 4, y = 4, rule = sgorF.B.A\$B2.B\$3.B\$B!`
waiting for apgsearch to support one-dimensional rules
muzik

Posts: 2761
Joined: January 28th, 2016, 2:47 pm
Location: Scotland

### Re: snoitareneG Rules

This topic was discussed here:

viewtopic.php?f=7&t=2036&p=44058#p44055

Brian Prentice
bprentice

Posts: 412
Joined: September 10th, 2009, 6:20 pm
Location: Coos Bay, Oregon

### Re: snoitareneG Rules

"Incubation" rules, I'd say. I won't play around too much with these unless a Rule-Table-generating script is written, but the concept seems interesting. Namely, it would allow rapid death of asymmetric areas while the potentially asymmetric birth area grew, so I'm guessing many of these will have a more strongly pro-symmetric induction compared to regular two-state rules.
SoL : FreeElectronics : DeadlyEnemies : 6a-ite
what is “sesame oil”?

Rhombic

Posts: 975
Joined: June 1st, 2013, 5:41 pm

### Re: snoitareneG Rules

It is basically the snoitareneG rule B1/S0/sG3/V, but some auxiliary transitions are added in order to prevent explosions.
`@RULE B1S0@TABLEn_states:3neighborhood:vonNeumannsymmetries:permutevar a={0,1,2}var b={0,1,2}var c={0,1,2}var d={0,1,2}var e={0,1,2}var f={0,1,2}var g={0,1,2}var h={0,1,2}var i={0,1,2}var s1={0,2}var s2={0,2}var s3={0,2}var s4={0,2}var s5={0,2}var s6={0,2}var s7={0,2}var s8={0,2}0,1,0,0,0,2#AUX2,2,2,1,0,02,2,2,2,1,02,2,0,0,0,02,1,0,0,0,02,a,b,c,d,1#AUX1,2,2,a,b,01,1,0,0,0,01,1,1,0,0,01,1,1,1,0,01,1,1,1,1,0@COLORS0 0 0 01 255 0 02 0 255 255`

`x = 11, y = 9, rule = B1S0A4.A.B.A\$.A\$2.A4.A2.A\$3.A4.A\$4.A3.A\$3.A.A.A\$7.2A\$4.A\$6.A!`
Still drifting.
Bullet51

Posts: 470
Joined: July 21st, 2014, 4:35 am

### Re: snoitareneG Rules

819-generation methuselah:
`x = 6, y = 5, rule = B1S03.A\$3.A\$A4.A\$A2.A\$3.A!`

7-cell infinite growth:
`x = 6, y = 6, rule = B1S04.2A2\$A2.A\$2.A\$A\$A!`

It's sort of a shame the diagonal wicks can only be destroyed from the endpoints.
`x = 33, y = 28, rule = B1S030.A\$32.A\$32.A6\$.2A2\$A8\$16.B\$16.A\$15.A\$14.A\$13.A\$12.A\$11.A\$10.A\$9.A\$9.B!`

p8 replicator:
`x = 5, y = 4, rule = B1S03.A\$3.2A\$2A\$.A!`
I have the best signature ever.

toroidalet

Posts: 859
Joined: August 7th, 2016, 1:48 pm
Location: Somewhere on a planet called "Earth"

### Re: snoitareneG Rules

Please don't name your rules with the same name as Quicklife rules..
I like making rules
fluffykitty

Posts: 330
Joined: June 14th, 2014, 5:03 pm