## 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`
If you're the person that uploaded to Sakagolue illegally, please PM me.
`x = 17, y = 10, rule = B3/S23b2ob2obo5b2o\$11b4obo\$2bob3o2bo2b3o\$bo3b2o4b2o\$o2bo2bob2o3b4o\$bob2obo5bo2b2o\$2b2o4bobo2b3o\$bo3b5ob2obobo\$2bo5bob2o\$4bob2o2bobobo!`

(Check gen 2)

Saka

Posts: 3099
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### 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!`
Bored of using the Moore neighbourhood for everything? Introducing the Range-2 von Neumann isotropic non-totalistic rulespace!
muzik

Posts: 3462
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: 591
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 : Rule X3VI
what is “sesame oil”?

Rhombic

Posts: 1056
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: 533
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!`
"Build a man a fire and he'll be warm for a day. Set a man on fire and he'll be warm for the rest of his life."

-Terry Pratchett

toroidalet

Posts: 1002
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Location: my computer

### Re: snoitareneG Rules

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

Posts: 617
Joined: June 14th, 2014, 5:03 pm