Search found 173 matches

by hkoenig
Today, 1:11 am
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2834
Views: 814171

Re: Thread for basic questions

Also, apgcode will lose any location and transform information which can be necessary when placing objects. If you wanted to use it as an RLE substitute, you need to include that info. I've found that an object oriented Life editor can have some advantages over the standard infinite bitplane when it...
by hkoenig
June 5th, 2021, 1:20 pm
Forum: Website Discussion
Topic: conwaylife.com in other languages
Replies: 6
Views: 346

Re: conwaylife.com in other languages

16 votes is "large"? There are a total of 67 views, which is fewer than the "99 users online" right now. Since most work on CA for the last half-century has been published in English, why do you "find [that] to be a problem"? Most of your list are argumentum ad populum fallacies. (Latin is a languag...
by hkoenig
May 6th, 2021, 2:27 pm
Forum: Patterns
Topic: Oscillator Discussion Thread
Replies: 1944
Views: 830835

Re: Oscillator Discussion Thread

My approach would be "wait a year and see if anyone ever mentions it again after that, and then see what they call it". I agree. I've been involved with the naming of new geographic features, and there's a tendency for people to want to quickly name "their" discovery before the object or feature in...
by hkoenig
April 27th, 2021, 9:55 am
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2834
Views: 814171

Re: Thread for basic questions

It's not even a torus! I admit I didn't look too hard, but thought I saw patterns appearing around the edges. Or maybe that's the filler Glider animation only. So they show various Spaceships, but don't actually support them? ...has concluded that it's much less bother to just get a regular job and...
by hkoenig
April 26th, 2021, 11:33 pm
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2834
Views: 814171

Re: Thread for basic questions

It's hard to get past the jargon, unstated assumptions, and poorly defined terms to figure out what exactly is supposed to be going on, but it looks a lot like digital tulip-mania. Each BIO will also form part of a superorganism to interact together once all are minted. I don't think they've thought...
by hkoenig
April 24th, 2021, 6:31 pm
Forum: General Discussion
Topic: Collaborative Life news
Replies: 12
Views: 1053

Re: Collaborative Life news

What Dave Greene said about LifeNews is pretty much true. I've kept pentadecathlon.com/LifeNews alive because every so often it gets referred to by other sites and researchers. But it's obsolete, and I'm not going to put much, if any, effort in adding new stuff, or doing more than fixing some minor ...
by hkoenig
April 2nd, 2021, 12:33 pm
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2834
Views: 814171

Re: Thread for basic questions

For CGoL most theory has been done in 1970+ or 80+, in Scientific American, Life volume, or Conway's book. The paper about spaceship search was done in 1999 by David Eppstein. What about? Adamatzky, "Collision-Based Computing", 2002 Griffeath/Moore, "New Constructions in Cellular Automata", 2003 Ad...
by hkoenig
March 19th, 2021, 11:19 am
Forum: Patterns
Topic: Oscillator Discussion Thread
Replies: 1944
Views: 830835

Re: Oscillator Discussion Thread

You might want to start by generating Hickerson's Rotor Descriptors for these oscillators. It's a bit cumbersome, but does allow searching and comparison of all types of oscillators, not just Period 2. Here they are for the ones you showed: p2 r4 3x3 .1. A.A .1. p2 r8 4x4 .1A. A..1 1..A .A1. p2 r8 5...
by hkoenig
March 8th, 2021, 6:29 pm
Forum: Patterns
Topic: Oscillator Discussion Thread
Replies: 1944
Views: 830835

Re: Oscillator Discussion Thread

I did a quick look and there are rotors up to Period 16 that would fit into a 5x5. Some are as small as 3x3 (Period 8). So they are out there. The fact that you found so many at periods from 2 to 5 surprises me. My interest is in the P2, so I'd like to see what there are with larger bounds. Larger f...
by hkoenig
March 8th, 2021, 11:25 am
Forum: Patterns
Topic: Oscillator Discussion Thread
Replies: 1944
Views: 830835

Re: Oscillator Discussion Thread

Very nice. Are you going to try for Period 6 and longer periods, or is that just too much to do? Also, did you keep a record of rotors for which a casing couldn't be found? Would be interesting to know which ones appear to be impossible. For the casings, did you look for fewest bits, smallest boundi...
by hkoenig
February 27th, 2021, 2:01 am
Forum: General Discussion
Topic: Catagolue Discussion Thread
Replies: 432
Views: 166478

Re: Catagolue Discussion Thread

You probably would need to build a database-- Define a table that for each row has a column for an island's hashcode (probably apgcode) and another column for an object's apgcode. Then, for every object, it's easy to partition into the individual islands. Now add a row for each island with the assoc...
by hkoenig
February 20th, 2021, 10:59 am
Forum: General Discussion
Topic: A LeapLife Status Report (NOW WITH LIFEVIEWER ANIMATION!)
Replies: 15
Views: 2203

Re: A LeapLife Status Report (under construction)

You need to add a simple, illustrated explanation of the rule for those who don't understand what "B2n3/S23-q" means. Or at least a link to that.
by hkoenig
February 2nd, 2021, 4:27 pm
Forum: Patterns
Topic: 20-bit still life syntheses
Replies: 100
Views: 15037

Re: 20-bit still life syntheses

I could be missing something, but the Blinker from part 1 is shifted diagonally in part 2. So this doesn't seem to work.

Ah-- gotta flip it diagonally to make it work.
by hkoenig
January 31st, 2021, 11:48 am
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2834
Views: 814171

Re: Thread for basic questions

Code: Select all

x = 19, y = 28, rule = B3/S23
2$10bo$10bobo$10bobobo2$12bobobo$17bo$11bobo2b2o2$10bobo2$9bobo2$8bobo
2$7bobo2$2b3obobo2$b2o2b2o2$bo2bo$3bo$3bo!
As for stretchers, consider that the slope is not exactly diagonal, and what sort of spaceship would be needed to do the stretching.
by hkoenig
January 21st, 2021, 9:16 pm
Forum: Patterns
Topic: 20-bit still life syntheses
Replies: 100
Views: 15037

Re: 20-bit still life syntheses

At least 7 3-Glider collisions produce that particular Blinker+Block. Here's the fastest one:

Code: Select all

x=6, y=13
bo$2bo$3o3$2b3o$4bo$3bo3$3b2o$4b2o$3bo!
by hkoenig
January 18th, 2021, 12:19 pm
Forum: Patterns
Topic: Synthesising Oscillators
Replies: 1157
Views: 926338

Re: Synthesising Oscillators

I set up a searchable database from a posting of 3 Glider collisions that was published here three years ago. I've found it useful to find candidate 3 Gliders constructions, by searching for final census matches. That Century and Block results in a single Boat. Which is unfortunate, as the database ...
by hkoenig
January 11th, 2021, 11:59 am
Forum: General Discussion
Topic: Catagolue Discussion Thread
Replies: 432
Views: 166478

Re: Catagolue Discussion Thread

How would you efficiently determine whether the ash of a soup contains a large/rare still-life? How is it currently done? I'd legitimately like to know. I've been rewriting a bunch of my Life tools, and one of the features I've lost is the ability to detect escaping Gliders. (The old way was arbitr...
by hkoenig
December 16th, 2020, 2:30 pm
Forum: Patterns
Topic: Thread For Your Useless Discoveries
Replies: 3331
Views: 1348221

Re: Thread For Your Useless Discoveries

Here's a reduction, if anyone wants to find whether it's been seen before
It's known. No other details.
by hkoenig
December 14th, 2020, 7:01 pm
Forum: Patterns
Topic: Updated oscillator stamp collection (was: Re: Golly suggestions)
Replies: 60
Views: 1795

Re: Golly suggestions

We need to create a text file that includes all the oscillators we want as separate RLEs. It's called a database, and it's not hard to create one. I use SQLite which is a part of the MacOS. I've set up and use database that is single common file which has several tables. The primary table is for ob...
by hkoenig
December 5th, 2020, 3:37 pm
Forum: Patterns
Topic: Thread For Your Useless Discoveries
Replies: 3331
Views: 1348221

Re: Thread For Your Useless Discoveries

Which appears to be a relative to the Snark x=23, y=49 13bo$11b3o$bo8bo$2bo7b2o$3o2$18b2ob2o$19bob2o$19bo$11b2o4b3o$11b2o3bo3b2o$16b 4o2bo$2b2o15bob2o$bobo12b3o2bo$bo13bo5bo$2o14b5o$18bo16$21b2o$8b2o9bo2bo$7b o2bo7bob2o$bo6bobo7bobo$2bo6bo7b2o2bo$3o16bobo$17b2obo$18bo$16bobo$16b2o$11b 2o$11b2o2$2b2o...
by hkoenig
November 25th, 2020, 11:48 am
Forum: General Discussion
Topic: Clearing pattern
Replies: 12
Views: 1620

Re: Clearing pattern

You might also want to consider the that at a high level this question was posed in LifeLine #7 as "The Irresistible Force Problem: ... This is easily proved impossible -- just shoot two at each other."
by hkoenig
October 3rd, 2020, 12:52 pm
Forum: Patterns
Topic: Soup search results
Replies: 2386
Views: 1617148

Re: Soup search results

I'd certainly like to try and reuse the bit of apgsearch that separates patterns into their components. I'd also be interesting in knowing how apgsearch finds escaping spaceships. Where is all that in the source code? Is there any high level description of the processes involved? I'm in the process...
by hkoenig
October 3rd, 2020, 10:47 am
Forum: Patterns
Topic: Thread For Your Useless Discoveries
Replies: 3331
Views: 1348221

Re: Thread For Your Useless Discoveries

Bitfields-- if I remember correctly, they were never defined properly (at least as of 2005 or so), so they were compiler implementation dependent. The standard didn't define where the empty space would be if the bitfields didn't conform to byte or word boundaries. (You have a 3 bit field, and a two ...
by hkoenig
October 2nd, 2020, 9:50 pm
Forum: Patterns
Topic: Thread For Your Useless Discoveries
Replies: 3331
Views: 1348221

Re: Thread For Your Useless Discoveries

re: Microsoft development practices--That matches my experience. Starting in the last century I did contracting at Microsoft, off and on, for about ten years, converting low level Windows code (registry management, video codecs, DRM, Silverlight, etc.) to run in the MacOS environment. Nobody wrote u...
by hkoenig
September 24th, 2020, 1:00 pm
Forum: Patterns
Topic: 1 Glider per Bit Oscillator Syntheses
Replies: 14
Views: 2369

Re: 1 Glider per Bit Oscillator Syntheses

Here's another 14 Glider construction for [16P2.58] using an intermediate 12-bit stable object [12.76]-- x=54, y=48 50bo$49bo$49b3o$47bo$45bobo$46b2o3$51bo$49bobo$50b2o2$51b3o$51bo$52bo6$13b o$8bo3bo37b2o$2bo6bo2b3o33bo2bo$obo4b3o38b2o$b2o43b2o$15b2o27bo2bo$8b3o4b obo26b2o$3b3o2bo6bo$5bo3bo$4bo4$43b...