Search found 765 matches

by Macbi
October 19th, 2020, 10:56 am
Forum: General Discussion
Topic: C/2 Diagonal?
Replies: 4
Views: 129

Re: C/2 Diagonal?

This sounds like a dumb question, but I wonder, is it possible for there to be diagonal speeds faster than c/4? Like a xWSS but diagonally. If such a thing is not possible in Conway's Life, what about other rules? Welcome to the forum! For future reference, such questions would be better suited to ...
by Macbi
October 14th, 2020, 8:02 am
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2106
Views: 614169

Re: Thread for basic questions

Which post says this exactly? Also, There's not only the pre-block but also the t-tetromino, which evolves into a traffic light, and the pre-pond. It feels like there are way too many patterns to check. This one and the one below it. You're talking about what he calls 'two-cluster' patterns. There ...
by Macbi
October 14th, 2020, 7:29 am
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2106
Views: 614169

Re: Thread for basic questions

How do we know exactly that the minimum population size for infinite growth is 10 cells? Can't we just make a block (which can be trivially made smaller into a pre-block) interact with an r-pentomino to create a block-laying or glider-producing switch engine? Has this been tried before? For example...
by Macbi
October 8th, 2020, 12:13 pm
Forum: General Discussion
Topic: CGoL / CA conference
Replies: 7
Views: 288

Re: CGoL / CA conference

Timezones would be an issue. Perhaps we could have people post in advance which talks they're interested in and what their availability is. Then we could schedule the talks around that. My other thought is that I'm working full time and don't want to take lots of time off to attend a conference. You...
by Macbi
September 30th, 2020, 3:31 pm
Forum: General Discussion
Topic: Catagolue Discussion Thread
Replies: 362
Views: 132295

Re: Catagolue Discussion Thread

wwei23 wrote:
September 30th, 2020, 11:06 am
Why did Catagolue move from appspot to hatsya?
https://cp4space.hatsya.com/2020/09/29/relocation/
by Macbi
September 27th, 2020, 7:49 am
Forum: Patterns
Topic: Loafer Synthesis
Replies: 10
Views: 512

Re: Loafer Synthesis

Adding my £0.02: I like the theoretical question of whether it's possible to construct things with loafers. But doing so efficiently is a less interesting problem to me because it's unlikely to be useful in any larger construction, and we still have a lot of other kinds of Optimization Game that act...
by Macbi
September 19th, 2020, 3:07 pm
Forum: Patterns
Topic: Binary slow salvos
Replies: 99
Views: 8673

Re: Binary slow salvos

Ordinary universal constructors take polynomial time as a function of the recipe length. The RCT is in a class of its own, taking exponential time as a function of the recipe length. But with HashLife we should be back down to linear time as a function of recipe length. So maybe Golly could run it ...
by Macbi
September 3rd, 2020, 11:45 am
Forum: Patterns
Topic: Small Spaceship Syntheses
Replies: 493
Views: 377462

Re: Small Spaceship Syntheses

This reminded me of one of my very first posts on the forum . Would this ... have any advantage? Something like this could work; unfortunately, synthesizing such a unbroken row of spaceships so close together would be difficult. The hardest part would be that the main spaceship would have to pass t...
by Macbi
September 3rd, 2020, 11:25 am
Forum: Patterns
Topic: Small Spaceship Syntheses
Replies: 493
Views: 377462

Re: Small Spaceship Syntheses

In my attempt, I just built a line of interlocking blinker-like objects (a bit like Dave Buckingham's edge-shooting pentadecathlon inserter). I did have the idea of infrastructure mostly in place on both sides, with a hole in the middle that got patched as soon as the escorts passed through. What's...
by Macbi
August 30th, 2020, 10:37 am
Forum: Patterns
Topic: Thread for your unsure discoveries
Replies: 2032
Views: 1005238

Re: Thread for your unsure discoveries

Found a BTC by accident, but I couldn't find it on the Wiki because I don't know its name. x = 12, y = 7, rule = B3/S23 5b2o$4bo2bo$bo2b4o2bo$obobo2bobobo$bo2bo2bo2bo$4bo2bo$5b2o! I don't know if it has a name, but it's in the Catagolue: https://catagolue.appspot.com/object?apgcode=xp2_0giligz344k7...
by Macbi
August 14th, 2020, 2:20 pm
Forum: Other Cellular Automata
Topic: List of the Turing-complete totalistic life-like CA
Replies: 88
Views: 56658

Re: List of the Turing-complete totalistic life-like CA

Cool! Nice to see one of the famous totalistic rules added to the collection.
by Macbi
August 14th, 2020, 6:40 am
Forum: The Sandbox
Topic: Glider Destruction Of Still Lives, Oscillators, Etc.
Replies: 46
Views: 2892

Re: Glider Destruction Of Still Lives, Oscillators, Etc.

4 gliders to destruct a "Mathematician Weld Mathematician". Can you find a way using less? x = 65, y = 55, rule = LifeHistory 4.A$3.A.A$3.A.A$2.2A.2A$A7.A$3A3.3A2$9A$A7.A$.7A2$.7A$A7.A$9A2$4A.4A$A7.A$2.2A.2A$ 3.A.A$3.A.A$4.A$10.3C$10.C$11.C12$43.3C4.3C$43.C6.C$44.C6.C15$62.3C$62.C$63.C! x = 20, y =...
by Macbi
August 10th, 2020, 4:47 am
Forum: The Sandbox
Topic: Glider Destruction Of Still Lives, Oscillators, Etc.
Replies: 46
Views: 2892

Re: Glider Destruction Of Still Lives, Oscillators, Etc.

Have you seen gameoflifeboy's glider-destruction script?

EDIT: For example, it produced this 1-glider destruction of the snark still-life.

Code: Select all

x = 13, y = 13, rule = B3/S23
9bo$8bo$8b3o3$2b2o$2bobo$4bo4b2o$4ob2o2bo2bo$o2bobobobob2o$3bobobobo$
4b2obobo$8bo!
by Macbi
August 7th, 2020, 9:49 am
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2106
Views: 614169

Re: Thread for basic questions

The 2-glider mess takes the longest to stabilize: x = 368, y = 436, rule = B3/S23 109bo36bo18bo$13bo18bo19bo16bo19bo18bo19bo16bo18bo36bo$12bo18bo19bo16b o19bo19b3o16bo17b3o16b3o15bo17bo$12b3o16b3o17b3o14b3o17b3o36b3o51bo18b 3o$181b3o4$145bo$13b3o17b3o89bo18b2o55bo$13bo19bo20bo17bo20bo13b2o15b 2o18bo...
by Macbi
August 6th, 2020, 4:11 am
Forum: Other Cellular Automata
Topic: Smallest Oscillators Supporting Specific Periods
Replies: 192
Views: 63570

Re: Smallest Oscillators Supporting Specific Periods

Okay, I completed the set. 0 mod 12 (p ≥ 60) x = 9, y = 1, rule = B2ce3jknry4cijn5einry7e/S01c2ik3aeknr4twy5cnqy6in78 obo5bo! 1 mod 12 (p ≥ 61) x = 8, y = 3, rule = B2cik3aejk4cikr5ceny6ak8/S01c2-en3jknry4cjnqtw5ceiry6ac8 o$7bo$o! 2 mod 12 (p ≥ 74) x = 10, y = 1, rule = B2-an3-ciq4ciz5ceir6eik/S02ik...
by Macbi
August 5th, 2020, 9:33 am
Forum: Other Cellular Automata
Topic: Smallest Oscillators Supporting Specific Periods
Replies: 192
Views: 63570

Re: Smallest Oscillators Supporting Specific Periods

Based on the ideas of A for awesome, Saka and wildmyron, I put together an LLS search for adjustable oscillators based on two cells turning into four wickstretchers, and I found this: x = 13, y = 3, rule = B2cek3-aijq4iky5-acjn6-c7/S02ik3ekqy4cijqw5cnqry6ik78 o$12bo$o! It gives a 3-cell oscillator f...
by Macbi
July 20th, 2020, 11:00 am
Forum: Bugs & Errors
Topic: I changed the subject by accident
Replies: 5
Views: 1193

Re: I changed the subject by accident

Also, changing the subject for your post doesn't change the name of the thread when looking at the list of threads in the forum. So it doesn't cause any harm, and most people don't even notice.
by Macbi
July 18th, 2020, 5:21 pm
Forum: Patterns
Topic: Thread for your unsure discoveries
Replies: 2032
Views: 1005238

Re: Thread for your unsure discoveries

Unfortunately it's not, as A for awesome posted this predecessor on Discord : x = 15, y = 16, rule = B3/S23 6bobo2bo$3bobo4bo$4b8o2bo$5b6obo$3bobo2bob4o$bo2bobo2b5o$ob2o2b2o2bob o$bo3bobo3b2obo$2bo3bobo2b2o$bob3o5b2o$2ob2o2b3ob4o$3obob7o$bo2b2obob 2o$bo2b3o$5bo$5bo! Ah, well there is my mistake: I ...
by Macbi
July 10th, 2020, 6:30 pm
Forum: General Discussion
Topic: Are speed of light spaceships possible?
Replies: 6
Views: 1000

Re: Are speed of light spaceships possible?

Thank you for the answer! That's an awesome blog post. How did you even find it? I can't just search for these things on Google because barely anyone is interested in this. I remembered that the proof existed, and searched on LifeWiki to find an online copy. It's linked to from the Spaceship page.
by Macbi
July 10th, 2020, 6:04 pm
Forum: General Discussion
Topic: Are speed of light spaceships possible?
Replies: 6
Views: 1000

Re: Are speed of light spaceships possible?

This is a good question! (Although perhaps more suited for the Thread for basic questions .) The answer is no. The fastest speeds that ships can go at is half lightspeed orthogonally or a quarter lightspeed diagonally. The glider and LWSS achieve these speeds. x = 5, y = 9, rule = B3/S23 b4o$o3bo$4b...
by Macbi
July 10th, 2020, 7:13 am
Forum: Scripts
Topic: Logic Life Search
Replies: 205
Views: 90157

Re: Logic Life Search

I noticed that in the OP cells are separated by spaces but in LLS they should be separated by commas (",") (this is the case in the development version, but I think it is the same in the "master" version). Try replacing all the spaces with commas? LLS can handle both commas and spaces. I think the ...
by Macbi
June 24th, 2020, 3:24 am
Forum: Other Cellular Automata
Topic: B234/S01234V puzzle in a newspaper
Replies: 6
Views: 2985

Re: B234/S01234V puzzle in a newspaper

This problem was rediscovered on the discord, and Mateon1 found the following improvement to 66 generations (which is optimal):

Code: Select all

x = 10, y = 10, rule = B234/S01234V
o$9bo2$o$9bo2$o$2bobo3bo$2bo3bo$o8bo!
by Macbi
June 16th, 2020, 12:13 pm
Forum: Other Cellular Automata
Topic: Smallest Spaceships Supporting Specific Speeds (5s) Project
Replies: 946
Views: 231059

Re: Smallest Spaceships Supporting Specific Speeds (5s) Project

LaundryPizza03 wrote:
June 16th, 2020, 12:00 pm
Recently Macbi found a rule with a 20-cell (24,6)c/54, a new speed, based on a moving failedrep.
I didn't discover it myself, I just rediscovered it when I scraped the catagolue.
by Macbi
June 11th, 2020, 2:20 am
Forum: The Sandbox
Topic: Birthdays
Replies: 407
Views: 127749

Re: Birthdays

Saka wrote:
June 10th, 2020, 9:38 pm
Happy Birthday Macbi (28)!!
Thanks!
by Macbi
June 10th, 2020, 5:36 am
Forum: Other Cellular Automata
Topic: Smallest Spaceships Supporting Specific Speeds (5s) Project
Replies: 946
Views: 231059

Re: Smallest Spaceships Supporting Specific Speeds (5s) Project

So I'm coming back to my idea of scraping all of the ships off the catagolue and putting them into 5S. Once I've got the ships from the catagolue, is there a script that will check if they're the best known ship of that speed and prepare them in the right format?