Search found 111 matches

by Paul Tooke
August 23rd, 2010, 10:49 am
Forum: Other Cellular Automata
Topic: Puffer with unstable trail (B37/S23)
Replies: 30
Views: 20067

Re: Puffer with unstable trail (B37/S23)

Ntsimp asked: Have you released this [modified gencols] source code anywhere? Would you be willing? I'm usually reluctant to unleash my code onto an unsuspecting public, but in this case my contribution is so minor I'll give it some thought. Look for something appearing in the Scripts forum over the...
by Paul Tooke
August 23rd, 2010, 5:37 am
Forum: Other Cellular Automata
Topic: Puffer with unstable trail (B37/S23)
Replies: 30
Views: 20067

Re: Puffer with unstable trail (B37/S23)

Calcyman wrote: Another possibility for a breeder would be a gun for the 8-engine rake. I did consider that, but had another project in mind... and: there should be some c/2 rakes out there. Indeed :) (Although this needs thinning out to be useful in making a breeder.) x = 35, y = 64, rule = B37/S23...
by Paul Tooke
August 22nd, 2010, 7:48 pm
Forum: Other Cellular Automata
Topic: Puffer with unstable trail (B37/S23)
Replies: 30
Views: 20067

Re: Puffer with unstable trail (B37/S23)

Calcyman wrote: There's an intermediate stage: create a clean 9c/28 rake (for which Calcyman provided an example) Um, thanks. Maybe. I have an observation and a question. The observation: p56 may be a tad too quick to construct a puffer. Remember that you had 480 generations for your gun to construc...
by Paul Tooke
August 22nd, 2010, 12:25 pm
Forum: Other Cellular Automata
Topic: Puffer with unstable trail (B37/S23)
Replies: 30
Views: 20067

Re: Puffer with unstable trail (B37/S23)

Calcyman wrote: I am absolutely astonished! I was a trifle surprised myself - and it took less than a couple of minutes to find using gencols (modified to handle other CA rules) and a puffer filter program I threw together a few years back. Nice gun - I was working on a reaction between a single gli...
by Paul Tooke
August 22nd, 2010, 10:04 am
Forum: Other Cellular Automata
Topic: Puffer with unstable trail (B37/S23)
Replies: 30
Views: 20067

Re: An introduction to DryLife (B37/S23)

Here is a much simpler 9c/28 which evolves from just two clean r-pentominoes:

Code: Select all

x = 15, y = 16, rule = B37/S23
2bo$b3o$3bo2$12bo$11b3o$2o9bo$4bob2o$o2b2o$2bo4b3o$2o6b2o3b2o$2o6b2o$
10b2o2bo$12bo$13b2o$13b2o!
This certainly looks simpler to build a gun for than the puddle jumper.
by Paul Tooke
August 22nd, 2010, 8:45 am
Forum: Other Cellular Automata
Topic: Inverse of "Coagulations" rule (B478/S234678)
Replies: 29
Views: 15780

Re: Inverse of "Coagulations" rule (B478/S234678)

The good news is that ebcubes oscillator does translate into a p32 oscillator in B478/S234678 (shown here with the stator reduced a bit): x = 18, y = 18, rule = B478/S234678 3o$2obo$obo$bob3o$3b2obo$3bob3o$4b5o$5b5o$6b5o$7b5o$8b3obo$9bobo$10bob obo$13bobo$12bobobo$13bobobo$14bob2o$15b3o! The less we...
by Paul Tooke
August 21st, 2010, 8:17 pm
Forum: Other Cellular Automata
Topic: Inverse of "Coagulations" rule (B478/S234678)
Replies: 29
Views: 15780

Re: Inverse of "Coagulations" rule (B478/S234678)

ebcube wrote: p32 oscillator in 1DD (don't know how to translate it to Inverse Coagulations Ouch!! Three things occur to me; Firstly: I obviously didn't name the table very well (I didn't mean the 1DD.table name to propogate publicly) Secondly: Yes, this pattern is p32 in the rule table that I suppl...
by Paul Tooke
August 21st, 2010, 2:03 pm
Forum: Other Cellular Automata
Topic: Puffer with unstable trail (B37/S23)
Replies: 30
Views: 20067

Re: An introduction to DryLife (B37/S23)

Calcyman wrote: Can anyone make a p480 Cordergun to fire the puddle jumper? This suggestion gave me Cordership deja vu. May I suggest that anyone willing to invest their time and effort into picking up Calcymans challenge first spends a small amount of it investigating whether 10 r-pentominoes is op...
by Paul Tooke
August 20th, 2010, 11:10 am
Forum: Other Cellular Automata
Topic: Inverse of "Coagulations" rule (B478/S234678)
Replies: 29
Views: 15780

Re: Inverse of "Coagulations" rule (B478/S234678)

Here is an alternative rule table for the orthogonal width 3 symmetric 1D CA which combines ideas from ebcubes table (show cell history) with calcymans (include the background state). n_states:4 neighborhood:Moore symmetries:none # Modified Gray code representation of states: # # 0 = ... # 1 = .#. #...
by Paul Tooke
August 20th, 2010, 8:40 am
Forum: Other Cellular Automata
Topic: Inverse of "Coagulations" rule (B478/S234678)
Replies: 29
Views: 15780

Re: Inverse of "Coagulations" rule (B478/S234678)

Calcyman wrote: I haven't tested it, but I think that the following should work I tested this on the p28 oscillator and Oscar claimed it was p5. I think that there's a typo in the table: it has "301033" and "303012", which is asymmetric. Replacing 303012 by 303013 (which I believe is the correct rul...
by Paul Tooke
August 20th, 2010, 6:48 am
Forum: Other Cellular Automata
Topic: Inverse of "Coagulations" rule (B478/S234678)
Replies: 29
Views: 15780

Re: Inverse of "Coagulations" rule (B478/S234678)

ebcube wrote: It looks like they don't have to be p3*n As Lewis correctly points out, I was meaning those oscillators that fit in a 3xN bounding box. There are also some that extend diagonally, symmetrical around a line of ON cells. In this rule, no pattern can escape its bounding box, so any patter...
by Paul Tooke
August 17th, 2010, 7:47 pm
Forum: Other Cellular Automata
Topic: Rule Tables + Weighted Life + Larger than Life
Replies: 16
Views: 9373

Re: Rule Tables + Weighted Life + Larger than Life

Iconmaster wrote: I mean, algorithms are simply easier. Instead of having to tweak a file for a new rule, you just punch in a few numbers in a textbar! Easier for whom? You seem to be overlooking one simple detail. Somebody has to write some code for Golly to make this happen before you get your tex...
by Paul Tooke
August 16th, 2010, 8:05 am
Forum: Other Cellular Automata
Topic: Phoenices
Replies: 15
Views: 9059

Re: Phoenices

Lewis wrote: I know this is slightly off-topic, but does the 12-cell phoenix in Life ever occur naturally? FWIW, I've been testing modifications to my random soup/agar program and it has turned up twice in test runs in Life. It may have shown up in others but I wasn't specifically looking for it. Fu...
by Paul Tooke
August 11th, 2010, 11:35 am
Forum: Other Cellular Automata
Topic: B36/S24567/C3
Replies: 3
Views: 3460

Re: B36/S24567/C3

Oddities eliminated: here is a c/2 spaceship, some p5 oscillators and examples of the other 'missing' periods up to p34. My ineptness at reducing the stators in this rule is evident in several. x = 311, y = 153, rule = 24567/36/3 15.2B$.3B7.B2.B2.B$B3.B5.B6.B20.BA$B8.B6.B19.B3A$B7.B6.B20.4A$B3.B2.B ...
by Paul Tooke
August 11th, 2010, 2:57 am
Forum: Other Cellular Automata
Topic: 2x2
Replies: 102
Views: 63276

Re: 2x2

Lewis wrote: Are any other 2c/5 spaceships known apart from this one: http://fano.ics.uci.edu/ca/rules/b36s125/g7.html Here's my small 2c/5 stamp collection which contains this spaceship, a shorter, wider p5, taglaongs for both, one p10 spaceship and the p5 puffer I mentioned earlier: x = 133, y = 1...
by Paul Tooke
August 9th, 2010, 1:33 pm
Forum: Other Cellular Automata
Topic: 2x2
Replies: 102
Views: 63276

Re: 2x2

Encouraged by Lewis's discovery of a dirty rake, I took a look at the p60 & p12 technology and came up with a couple of clean p60 rakes. Here is a p60 backwards rake: x = 138, y = 171, rule = B36/S125 75b3o3bo3b3o$74b4obobobob4o$72bob2obo7bob2obo$71bo5bobo3bobo5bo17bo9bo $72bobo3b2o3b2o3bobo16bobobo...
by Paul Tooke
August 8th, 2010, 9:47 am
Forum: Other Cellular Automata
Topic: 2x2
Replies: 102
Views: 63276

Re: 2x2

Lewis wrote: By combining parts from the P560 and P120 puffers, I've found a new puffer which periodically emits the c/8 glider. Well done! It's nice to know that a rake is at least theoretically possible. Cleaning this up to make a p1680 rake is left as an exercise! When I get the time (and cpu cyc...
by Paul Tooke
August 8th, 2010, 7:22 am
Forum: Other Cellular Automata
Topic: 2x2
Replies: 102
Views: 63276

Re: 2x2

My interest in this rule was piqued by reading Nathaniels article. One particular sentence stood out for me: In fact, the c/8 wickstretcher and its slight modifications are currently the only known infinitely-growing patterns in 2x2. No puffers? A rule with spaceships but no puffers? Red rag, meet b...
by Paul Tooke
July 30th, 2010, 1:42 pm
Forum: Other Cellular Automata
Topic: Inverse of "Coagulations" rule (B478/S234678)
Replies: 29
Views: 15780

Re: Inverse of "Coagulations" rule (B478/S234678)

Another update to the collection with new oscillators of periods 8,11,15-28,33-35,38 & 62. x = 1166, y = 426, rule = B478/S234678 100b2o14b2o5b2o44b2o13b2o30b2o2b2o2b2o14b2o15b2o81b2o2b2o2b2o14b2o74b 2o6b2o14b2o74b2o2b2o2b2o14b2o74b2o2b2o2b2o14b2o18b2o54b2o2b2o2b2o14b2o 74b2o2b2o2b2o14b2o74b2o2b2o2b...
by Paul Tooke
July 29th, 2010, 6:53 pm
Forum: Other Cellular Automata
Topic: Inverse of "Coagulations" rule (B478/S234678)
Replies: 29
Views: 15780

Re: Inverse of "Coagulations" rule (B478/S234678)

The collection with a few updates. A duplicate p26 removed (the last was a duplicate of the first; in a different phase and with extra stator cells), two more p29s, another p38 and a p32 which is a new period: x = 1118, y = 426, rule = B478/S234678 100b2o14b2o5b2o44b2o13b2o6b2o2b2o2b2o14b2o74b2o2b2o...
by Paul Tooke
July 29th, 2010, 7:35 am
Forum: Other Cellular Automata
Topic: Inverse of "Coagulations" rule (B478/S234678)
Replies: 29
Views: 15780

Re: Inverse of "Coagulations" rule (B478/S234678)

Extrementhusiast wrote: The first p20 is unnecessarily large, as only one half of the current oscillator is needed. Yes, and I've just noticed the the last p28 can be halved also. Now that Jason Summers' Oscillizer site is back up and running (it was 503-ing on me yesterday and my local copy is brok...
by Paul Tooke
July 29th, 2010, 7:07 am
Forum: Other Cellular Automata
Topic: Inverse of "Coagulations" rule (B478/S234678)
Replies: 29
Views: 15780

Re: Inverse of "Coagulations" rule (B478/S234678)

Here is an updated stamp collection. I've removed the LCM p15, halved the p20 and added everything discovered since Lewis posted the last collection (thanks, Lewis.) This includes a few more that I've found since I lasted posted: a p19 & p42 and two at previously unknown periods, p33 & p56. x = 1118...
by Paul Tooke
July 28th, 2010, 8:22 pm
Forum: Other Cellular Automata
Topic: Inverse of "Coagulations" rule (B478/S234678)
Replies: 29
Views: 15780

Re: Inverse of "Coagulations" rule (B478/S234678)

Extrementhusiast wrote:
The first p15 in Lewis's collection is actually pseudoperiod, as it is a welding of a p3 and two p5s.
Oops :oops: that's my fault, see my LCM complaints above, I've been filtering them out by eye. Well spotted.
by Paul Tooke
July 28th, 2010, 8:08 pm
Forum: Other Cellular Automata
Topic: Inverse of "Coagulations" rule (B478/S234678)
Replies: 29
Views: 15780

Re: Inverse of "Coagulations" rule (B478/S234678)

Lewis wrote: How are you finding these larger oscillators? They seem too large and high-period to be found with most search software (WinLifeSearch etc.). It's a homebrew program I've been developing, on or off, for about ten years now. It's a random agar search program, not Gabriel Nivasch's Random...
by Paul Tooke
July 28th, 2010, 2:51 pm
Forum: Other Cellular Automata
Topic: Inverse of "Coagulations" rule (B478/S234678)
Replies: 29
Views: 15780

Re: Inverse of "Coagulations" rule (B478/S234678)

Three more new periods: 34, 41 &43. BTW, has anyone else noticed that those 3xn oscillators are emulating a 3-state 1-D CA? (4 states if you count the extremeties). I am wondering whether it's worth investigating the behaviour of that CA to see what periods are possible. x = 54, y = 67, rule = B478/...