ConwayLife.com

Posted: **July 28th, 2020, 2:37 pm**

goldenratio wrote: July 28th, 2020, 1:31 pm https://www.conwaylife.com/wiki/Kickback

No RLE/Plaintext file for the 90-degree reactions? (clicking returns a Not Found message)

Yup, thanks for the reminder. Here's how things currently work:

If you see a LifeViewer animation of a pattern, or a LifeViewer frame in general, then the way to get the pattern is by clicking to launch LifeViewer, then hit R if it's an animation and you want to get the first frame -- and then Ctrl+C will put the pattern in your clipboard.

These RLEs can be added by anyone, in the RLE namespace, as an article called RLE:{pname}. LifeViewer knows to look there, so then those RLEs can be used in embedded viewers in other articles.

However, there's also a "LifeWiki pattern collection" that can be downloaded as a ZIP file. Generally we want every pattern that's showcased in the main namespace to also show up in the pattern collection, just on general principles. Those direct "RLE" and "plaintext" links point to those pattern-collection files.

However, getting those files there means uploading them to the LifeWiki server, and for security reasons only a few people have permission to do that. Generating files with good comments and uploading them manually is one of the most time-consuming never-ending tasks on LifeWiki -- so the current system involves doing them in batches.

Next time someone runs the auto-upload script -- which doesn't happen _too_ often because it involves scanning every main-namespace LifeWiki article looking for new stuff -- any RLE-namespace files that aren't represented on the server will be created (with standardized comments) and uploaded semi-automatically. I'll kick off an auto-upload run now, while I'm thinking of it. Thanks again!

Posted: **August 5th, 2020, 6:42 pm**

Acorn and multum in parvo 3-glider syntheses (the wiki says 4): viewtopic.php?f=2&t=576&start=1300#p52142

Posted: **August 5th, 2020, 6:50 pm**

bubblegum wrote: August 5th, 2020, 6:42 pm Acorn and multum in parvo 3-glider syntheses (the wiki says 4): viewtopic.php?f=2&t=576&start=1300#p52142

I'm a bit hesitant to add these because they're not quite the same version of the initial pattern and I'm not sure what exactly counts as a synthesis of the "same" methuselah. For example, at what point do we draw the line between "a die hard variant" and "a random pattern that happens to vanish into nothing"? Can someone who's been around on the wiki longer than I have give advice on what the convention is surrounding this?

Posted: **August 6th, 2020, 8:24 am**

LifeWiki wrote: January 18th, 2038, 11:18 pm The smallest and most well-known methuselah is the R-pentomino,

But this one is even smaller (if you consider the bounding box).

Code: Select all

x = 0, y = 0, rule = B3/S23
3o$o2bo!

Posted: **August 6th, 2020, 8:32 am**

ColorfulGalaxy wrote: August 6th, 2020, 8:24 am
LifeWiki wrote: January 18th, 2038, 11:18 pm The smallest and most well-known methuselah is the R-pentomino,
But this one is even smaller (if you consider the bounding box).
Code: Select all
x = 0, y = 0, rule = B3/S23
3o$o2bo!

This is pi.
And a pi doesn't last as long as an r
BTW pls don't make posts that are a bit useless.

Posted: **August 6th, 2020, 3:30 pm**

ColorfulGalaxy wrote: August 6th, 2020, 8:24 am
LifeWiki wrote: January 18th, 2038, 11:18 pm The smallest and most well-known methuselah is the R-pentomino,
But this one is even smaller (if you consider the bounding box).
Code: Select all
x = 0, y = 0, rule = B3/S23
3o$o2bo!

This is even smaller by bounding box:

Code: Select all

x = 1, y = 1, rule = B3/S23
o!

Oh c'mon it isn't that big of a deal, don't bother please
(actually maybe we should clarify that a bit maybe)
Also you can use

Code: Select all

[wiki][/wiki]

tags to generate a link to the wiki: R-pentomino

Posted: **August 9th, 2020, 3:31 am**

Adam Goucher has confirmed a new version of ikpx. Should this be mentioned in the Ikpx article?

Posted: **August 9th, 2020, 4:12 am**

According to this article,

LifeWiki wrote: October 20th, 1988, 11:33 pmand the shortest such pattern that creates a spark coil has length 102.

Code: Select all

x = 0, y = 0, rule = B3/S23
72o!

But 72 is even smaller. [SOLVED]
Edit: 67 produces a beacon, and 113 produce a DSC.

Posted: **August 9th, 2020, 4:31 am**

LaundryPizza03 wrote: August 9th, 2020, 3:31 am Adam Goucher has confirmed a new version of ikpx. Should this be mentioned in the Ikpx article?

Done.

Posted: **August 10th, 2020, 8:30 pm**

Kazyan wrote: January 19th, 2016, 7:46 pm Periodic HL122H:

Code: Select all

x = 27, y = 23, rule = B3/S23
12bo$10b3o$9bo$9b2o2$14b2o$14b2o$24b2o$24bobo$21b2obobo$21bobobo$b2o
20bo$b2o10b3o7b2o$14bo8b3o$12b3o8b3o$23b3o$23b3o$23b2o$3bob2o16bo$b3ob
o15bobobo$o6bo13b2obobo$2o4b2o16bobo$24b2o!

Currently using Bellman to try to delete the 3/4 traffic light in a stable way, but in the meantime, this form allows for tight p244 and p488 guns:

Code: Select all

x = 149, y = 58, rule = B3/S23
10b2o10b2o77b2o10b2o$9bo2bo8bo2bo75bo2bo8bo2bo$9b3o2b6o2b3o18bo56b3o2b
6o2b3o18bo$12b2o6b2o19b3o59b2o6b2o19b3o$11bo10bo17bo61bo10bo17bo$11b2o
bo4bob2o17b2o60b2obo4bob2o17b2o$16b2o89b2o$45b2o89b2o$45b2o89b2o$55b2o
89b2o$55bobo88bobo$7b2o43b2obobo40b2o43b2obobo$7b2o43bobobo41b2o43bobo
bo$32b2o20bo68b2o20bo$2b2o28b2o19bo2bo36b2o28b2o19bo2bo$3bo49bo40bo49b
o$3bobo47bo3bo36bobo47bo3bo$4b2o47bo3bo37b2o47bo3bo$53bo90bo$22b2o29bo
2bo56b2o29bo2bo$20bo2bo10bob2o6b3o7bo56bo2bo10bob2o6b3o7bo$20b2o10b3ob
o7bo2bo4bobobo54b2o10b3obo7bo2bo4bobobo$9b3o19bo6bo4bo3bo4b2obobo64bo
6bo4bo3bo4b2obobo$20b2o9b2o4b2o4bobob2o6bobo53b2o9b2o4b2o4bobob2o6bobo
$13b3o5bo22b2ob2o6b2o47b2o6bo22b2ob2o6b2o$13b3o5bobo21b3o56b2o6bobo21b
3o$10b3o9b2o89b2o$10bobob2o$10bobob2o$42b2obobo85b2obobo$42b2obobo85b
2obobo$34b2o9b3o77b2o9b3o$10b3o21bobo5b3o80bobo5b3o$b2o6b2ob2o22bo5b3o
47b2o33bo5b3o$obo6b2obobo4b2o4b2o9b2o53bobo16b2o4b2o9b2o$obob2o4bo3bo
4bo6bo19b3o42bobob2o13bo6bo19b3o$bobobo4bo2bo7bob3o10b2o54bobobo15bob
3o10b2o$3bo7b3o6b2obo10bo2bo56bo16b2obo10bo2bo$bo2bo29b2o56bo2bo29b2o$
4bo90bo$o3bo86bo3bo$o3bo86bo3bo$4bo90bo$bo2bo19b2o66bo2bo19b2o$3bo20b
2o31bo36bo20b2o31bo$bobobo43b2o4bobo34bobobo43b2o4bobo$obob2o43b2o5b2o
33bobob2o43b2o5b2o$obo88bobo$b2o89b2o$11b2o89b2o$11b2o89b2o$40b2o89b2o
$16b2o17b2obo4bob2o60b2o17b2obo4bob2o$17bo17bo10bo61bo17bo10bo$14b3o
19b2o6b2o59b3o19b2o6b2o$14bo18b3o2b6o2b3o56bo18b3o2b6o2b3o$33bo2bo8bo
2bo75bo2bo8bo2bo$34b2o10b2o77b2o10b2o!

EDIT: Here's something delightfully weird and spartan. I haven't found a good way to cleanly extract one of the B outputs, but I'm sure there's something that doesn't require resorting to Bellman:

Code: Select all

x = 34, y = 35, rule = B3/S23
$10b2o$10bobo7bo$12bo5b3o$12b2o3bo$17b2o4$30b2o$9bo20b2o$10bo$10b2o14b
o$9b2o14bobo$9bo14bo2bo$25b2o16$20bo$19bobo$19b2o!

L112 is originally p4

Posted: **August 10th, 2020, 10:48 pm**

yujh wrote: August 10th, 2020, 8:30 pm L112 is originally p4

Think you meant L122, but done.

Posted: **August 11th, 2020, 4:03 am**

The Wiki article for "Bulldozer" says that Bulldozer is an "unnamed" pattern.
Please correct this.

Posted: **August 11th, 2020, 5:02 am**

ColorfulGalaxy wrote: August 11th, 2020, 4:03 am The Wiki article for "Bulldozer" says that Bulldozer is an "unnamed" pattern.
Please correct this.

Done!Bulldozer

Posted: **August 11th, 2020, 7:07 am**

yujh wrote: August 11th, 2020, 5:02 am
ColorfulGalaxy wrote: August 11th, 2020, 4:03 am The Wiki article for "Bulldozer" says that Bulldozer is an "unnamed" pattern.
Please correct this.
Done!Bulldozer

"Categories" still says it's "Unnamed periodic objects"

Posted: **August 11th, 2020, 7:47 am**

Just to clarify the notion of greyship (as mentioned in the spaceship main article):

A greyship in the sense I meant it is not a single spaceship, but rather a grammar of combinable components to build arbitrarily large ships of maximum average density.

It is a long outstanding conjecture that the maximum average density of every agar is at most 1/2. This is only proven for p1 agars, strictly speaking, but no counter example showed up so far. So greyships have density 1/2 and thus look great when looked at from a distance.

The notion is also about building flexible shapes. Ideally the grammar allows you to build flexible macro shapes.

The greyships easiest to construct are using the stripes agar, even that is a challenge for periods above 4. A greyship based on the Venetian blinds agar would be on the opposite side of the spectrum. Alas, I never managed to construct one.

So the notion is not as arbitrary as you might suspect originally, although admittedly special interest.

Posted: **August 11th, 2020, 3:30 pm**

ColorfulGalaxy wrote: August 11th, 2020, 7:07 am
yujh wrote: August 11th, 2020, 5:02 am
ColorfulGalaxy wrote: August 11th, 2020, 4:03 am The Wiki article for "Bulldozer" says that Bulldozer is an "unnamed" pattern.
Please correct this.
Done!Bulldozer
"Categories" still says it's "Unnamed periodic objects"

Pretty sure that pattern is unnamed, and that "Bulldozer" is a proposed name, which is why it's an unnamed pattern.

Posted: **August 16th, 2020, 5:08 am**

I think the LifeWiki RLE file for Sir Robin (https://www.conwaylife.com/patterns/sirrobin.rle) is wrong. Specifically, it's missing two '$$'s indicating the two empty lines.

The correct code can be found here: https://gist.github.com/carlcorder/84d6 ... 4ff5795717

Can someone confirm? Is this a problem with more RLE files on the site? Or did I write my RLE compiler wrong and/or miss something? I'm pretty new to this.

Posted: **August 16th, 2020, 5:14 am**

acapellascience wrote: August 16th, 2020, 5:08 am I think the LifeWiki RLE file for Sir Robin (https://www.conwaylife.com/patterns/sirrobin.rle) is wrong. Specifically, it's missing two '$$'s indicating the two empty lines.

The correct code can be found here: https://gist.github.com/carlcorder/84d6 ... 4ff5795717

Can someone confirm? Is this a problem with more RLE files on the site? Or did I write my RLE compiler wrong and/or miss something? I'm pretty new to this.

Code: Select all

#N Sir Robin
#O Adam P. Goucher, Tom Rokicki; 2018
#C The first elementary knightship to be found in Conway's Game of Life.
#C http://conwaylife.com/wiki/Sir_Robin
x = 31, y = 79, rule = B3/S23
4b2o$4bo2bo$4bo3bo$6b3o$2b2o6b4o$2bob2o4b4o$bo4bo6b3o$2b4o4b2o3bo$o9b
2o$bo3bo$6b3o2b2o2bo$2b2o7bo4bo$13bob2o$10b2o6bo$11b2ob3obo$10b2o3bo2b
o$10bobo2b2o$10bo2bobobo$10b3o6bo$11bobobo3bo$14b2obobo$11bo6b3o2$11bo
9bo$11bo3bo6bo$12bo5b5o$12b3o$16b2o$13b3o2bo$11bob3obo$10bo3bo2bo$11bo
4b2ob3o$13b4obo4b2o$13bob4o4b2o$19bo$20bo2b2o$20b2o$21b5o$25b2o$19b3o
6bo$20bobo3bobo$19bo3bo3bo$19bo3b2o$18bo6bob3o$19b2o3bo3b2o$20b4o2bo2b
o$22b2o3bo$21bo$21b2obo$20bo$19b5o$19bo4bo$18b3ob3o$18bob5o$18bo$20bo$
16bo4b4o$20b4ob2o$17b3o4bo$24bobo$28bo$24bo2b2o$25b3o$22b2o$21b3o5bo$
24b2o2bobo$21bo2b3obobo$22b2obo2bo$24bobo2b2o$26b2o$22b3o4bo$22b3o4bo$
23b2o3b3o$24b2ob2o$25b2o$25bo2$24b2o$26bo!

Anything wrong?
I can’t open gist (firewall)

Posted: **August 16th, 2020, 5:28 am**

yujh wrote: August 16th, 2020, 5:14 am I can’t open gist (firewall)

Here's the code from gist:

Code: Select all

const SIR_ROBIN = `4b2o$4bo2bo$4bo3bo$6b3o$2b2o6b4o$2bob2o4b4o$bo4bo6b3o$2b4o4b2o3bo$o9b2o$bo3bo$
                    6b3o2b2o2bo$2b2o7bo4bo$13bob2o$10b2o6bo$11b2ob3obo$10b2o3bo2bo$10bobo2b2o$
                    10bo2bobobo$10b3o6bo$11bobobo3bo$14b2obobo$11bo6b3o2$$11bo9bo$11bo3bo6bo$
                    12bo5b5o$12b3o$16b2o$13b3o2bo$11bob3obo$10bo3bo2bo$11bo4b2ob3o$13b4obo4b2o$
                    13bob4o4b2o$19bo$20bo2b2o$20b2o$21b5o$25b2o$19b3o6bo$20bobo3bobo$19bo3bo3bo$
                    19bo3b2o$18bo6bob3o$19b2o3bo3b2o$20b4o2bo2bo$22b2o3bo$21bo$21b2obo$20bo$19b5o$
                    19bo4bo$18b3ob3o$18bob5o$18bo$20bo$16bo4b4o$20b4ob2o$17b3o4bo$24bobo$28bo$
                    24bo2b2o$25b3o$22b2o$21b3o5bo$24b2o2bobo$21bo2b3obobo$22b2obo2bo$24bobo2b2o$
                    26b2o$22b3o4bo$22b3o4bo$23b2o3b3o$24b2ob2o$25b2o$25bo2$$24b2o$26bo!`

Posted: **August 16th, 2020, 5:33 am**

acapellascience wrote: August 16th, 2020, 5:28 am

yujh wrote: August 16th, 2020, 5:14 am I can’t open gist (firewall)

Here's the code from gist:

Code: Select all

const SIR_ROBIN = `4b2o$4bo2bo$4bo3bo$6b3o$2b2o6b4o$2bob2o4b4o$bo4bo6b3o$2b4o4b2o3bo$o9b2o$bo3bo$
                    6b3o2b2o2bo$2b2o7bo4bo$13bob2o$10b2o6bo$11b2ob3obo$10b2o3bo2bo$10bobo2b2o$
                    10bo2bobobo$10b3o6bo$11bobobo3bo$14b2obobo$11bo6b3o2$$11bo9bo$11bo3bo6bo$
                    12bo5b5o$12b3o$16b2o$13b3o2bo$11bob3obo$10bo3bo2bo$11bo4b2ob3o$13b4obo4b2o$
                    13bob4o4b2o$19bo$20bo2b2o$20b2o$21b5o$25b2o$19b3o6bo$20bobo3bobo$19bo3bo3bo$
                    19bo3b2o$18bo6bob3o$19b2o3bo3b2o$20b4o2bo2bo$22b2o3bo$21bo$21b2obo$20bo$19b5o$
                    19bo4bo$18b3ob3o$18bob5o$18bo$20bo$16bo4b4o$20b4ob2o$17b3o4bo$24bobo$28bo$
                    24bo2b2o$25b3o$22b2o$21b3o5bo$24b2o2bobo$21bo2b3obobo$22b2obo2bo$24bobo2b2o$
                    26b2o$22b3o4bo$22b3o4bo$23b2o3b3o$24b2ob2o$25b2o$25bo2$$24b2o$26bo!`

1. Rle needs x,y and rule.
So it’s x=100,y=200,rule=B3/S23(example
2. 2$ =$$
And 2$ is easier to understand.
Your code:

Code: Select all

 4b2o$4bo2bo$4bo3bo$6b3o$2b2o6b4o$2bob2o4b4o$bo4bo6b3o$2b4o4b2o3bo$o9b2o$bo3bo$
6b3o2b2o2bo$2b2o7bo4bo$13bob2o$10b2o6bo$11b2ob3obo$10b2o3bo2bo$10bobo2b2o$
10bo2bobobo$10b3o6bo$11bobobo3bo$14b2obobo$11bo6b3o2$$11bo9bo$11bo3bo6bo$
                    12bo5b5o$12b3o$16b2o$13b3o2bo$11bob3obo$10bo3bo2bo$11bo4b2ob3o$13b4obo4b2o$
                    13bob4o4b2o$19bo$20bo2b2o$20b2o$21b5o$25b2o$19b3o6bo$20bobo3bobo$19bo3bo3bo$
                    19bo3b2o$18bo6bob3o$19b2o3bo3b2o$20b4o2bo2bo$22b2o3bo$21bo$21b2obo$20bo$19b5o$
                    19bo4bo$18b3ob3o$18bob5o$18bo$20bo$16bo4b4o$20b4ob2o$17b3o4bo$24bobo$28bo$
                    24bo2b2o$25b3o$22b2o$21b3o5bo$24b2o2bobo$21bo2b3obobo$22b2obo2bo$24bobo2b2o$
                    26b2o$22b3o4bo$22b3o4bo$23b2o3b3o$24b2ob2o$25b2o$25bo2$$24b2o$26bo!

(no rule=23/3)
And no space for golly!

Edit:

[important]
You wrote 2$$
(Added an $)
It means 3$
(0
.
.
0)

Go to lw if you need helprle

Posted: **August 16th, 2020, 5:40 am**

Ah weird! The person who put this on Gist must have made the exact same error I did in my compiler and added the extra $ to cover it.

Sorry to inconvenience you!

That's crazy though; this isn't my code.. What would be the chances that an error of mine was hidden by a complimentary error from a random stranger? Oh well

Posted: **August 18th, 2020, 12:24 pm**

@dvgrn @Ian07
1. Could you please review my sketch for an Lx73 article? index.php?oldid=73308
2. Do you have plans for embedding a LifeViewer into Template:Rule?

Posted: **August 18th, 2020, 1:19 pm**

GUYTU6J wrote: August 18th, 2020, 12:24 pm@dvgrn @Ian07
1. Could you please review my sketch for an Lx73 article? index.php?oldid=73308

Looks very good to me!

GUYTU6J wrote: August 18th, 2020, 12:24 pm2. Do you have plans for embedding a LifeViewer into Template:Rule?

Oops, I haven't gotten around to experimenting with that yet, have I? Adding a RANDOMIZE sample with LifeViewer and so on. I'm probably avoiding it. I'm scared to death of LifeWiki templates, so if they don't bother me I try not to bother them.

I'll put it back near the top of my to-do list, but will also cross my fingers and hope that somebody else gets to it before I do.

Posted: **September 5th, 2020, 5:17 am**

For Checkerboard dual, I made a conversion table for birth transitions on an initially dead square (white) in this post, with an explanation of how it works. It could be adapted into a table at LifeWiki, somehow.

Posted: **September 17th, 2020, 11:40 pm**

The SMOS article should mention the rule used in the example (B34enw5q6ae7c/S2ac3-cknq4-aenqt5akqy8).

ConwayLife.com

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