Search found 81 matches

by MikeP
March 8th, 2019, 10:27 pm
Forum: Scripts
Topic: RLE grammar
Replies: 11
Views: 5171

Re: RLE grammar

There's also the #P syntax -- "P" | "R" ; top-left corner coordinates -- but that also hasn't seen much of any use except maybe in Xlife. Bellman's input files use the #P syntax. The format has its roots in the "Life 1.05" format that Xlife used; I just ended up adding more and more to it over the ...
by MikeP
August 6th, 2018, 8:17 am
Forum: Patterns
Topic: Thread for your unsure discoveries
Replies: 1728
Views: 838424

Re: Thread for your unsure discoveries

It looks remarkably similar to this: viewtopic.php?f=2&t=81&start=0#p275
by MikeP
March 7th, 2018, 1:28 pm
Forum: Patterns
Topic: Elementary knightship
Replies: 136
Views: 225050

Re: Elementary knightship

the other is a kickback. The kickback works in the other direction, too: x = 80, y = 67, rule = LifeHistory 7.2A$5.A3.A$5.A$.2A.A.2A.2A$A3.2A3.2A$A3.A3.2A$2A3.2A3.A$.A$2.A5.3A$ 4.A3.5A$4.A6.A3.2A$5.2A3.A4.2A2.A.A7.A$4.A2.2A2.A.A3.A.A2.A2.A2.3A2.A $4.2A3.A.A.A.A.2A3.2A.A7.A$4.3A2.A.A.A2.5A4.A3.3A$6....
by MikeP
January 15th, 2018, 6:55 am
Forum: Website Discussion
Topic: Bellman on the web
Replies: 5
Views: 4958

Re: Bellman on the web

Simon Ekstr\"{o}m produced an even-more-improved version: https://github.com/simeksgol/BellmanWin_szlim Wow. It's evolved a lot further than I realised. It's also amusing to see that the tile wrap thing still hasn't annoyed anyone to the point of fixing it! So for the time being, those documentatio...
by MikeP
January 13th, 2018, 6:13 pm
Forum: Website Discussion
Topic: Bellman on the web
Replies: 5
Views: 4958

Bellman on the web

I think it would be a good idea if I shut down the original Bellman site at https://sourceforge.net/projects/bellman/ . It shows up at the top of a Google search for "conway's life bellman", but this is just confusing; Michael Simkin's improved Bellman is the one everyone should be running. The prob...
by MikeP
April 3rd, 2017, 5:46 pm
Forum: Patterns
Topic: Small color-changing stable reflector!
Replies: 9
Views: 4188

Re: Small color-changing stable reflector!

Extrementhusiast wrote:I think this pattern speaks for itself:
Looks like I owe you a prize:

Code: Select all

x = 21, y = 11, rule = B3/S23
21o$o19bo$o3bo4bo3bo3bo2bo$o2b4ob2o2bobobobobo$obobo4bo2bobobobobo$o2b
3o3bo2bobobobobo$o3bobo2bo2bobobobobo$ob4o3bo2bobobobobo$o3bo3b3o2bo3b
o2bo$o19bo$21o!
;)
by MikeP
February 6th, 2015, 10:01 pm
Forum: Patterns
Topic: The Hunting of the New Herschel Conduits
Replies: 961
Views: 694220

Re: The Hunting of the New Herschel Conduits

As for LOM take even snark and remove the "late" eater and you will get LOM. Now if we had more knowledge about LOM catalysts options we might had already snark based G->H. I explored this bit of search space quite thoroughly in my snark hunting. I seem to remember finding a few explosions that cou...
by MikeP
January 8th, 2015, 8:37 am
Forum: Scripts
Topic: Bellman
Replies: 158
Views: 115573

Re: Bellman

The default for max-live is only 10 which is too small to find the eater2.
by MikeP
January 8th, 2015, 6:46 am
Forum: Scripts
Topic: Bellman
Replies: 158
Views: 115573

Re: Bellman

(if we had github version I would make a pool request). You can fork projects on Sourceforge too. Click on "Code" (at the top) and then "Fork" (in the left hand bar). 2)There is this "envelope.exe" that's neither in the documentation nor looks like some test. What does it do? It's a quick hack whic...
by MikeP
November 22nd, 2014, 10:25 am
Forum: General Discussion
Topic: apgsearch: a high-performance soup searcher
Replies: 147
Views: 98578

Re: apgsearch: a high-performance soup searcher

The Snark catalyst is 31 or 34 bits for the common versions, I believe, and no doubt we could come up with hundreds of variants with slightly higher bit counts. Far more than hundreds. The catalyst itself only consists of about half the live cells; the others are there to stabilise the edges. I was...
by MikeP
November 20th, 2014, 12:06 pm
Forum: General Discussion
Topic: apgsearch: a high-performance soup searcher
Replies: 147
Views: 98578

Re: apgsearch: a high-performance soup searcher

I just noticed that apgsearch knows about the loafer. Is it worth adding the snark catalyst too?
by MikeP
November 10th, 2014, 6:25 am
Forum: Scripts
Topic: Bellman
Replies: 158
Views: 115573

Re: Bellman

The filter just checks that there is a certain pattern in a certain point of time on the board. Question marks are not allowed there, only whitespace (unknown or don't-care), dots (dead) and asterisks (alive). This is a bug. '?'s in the filter are meant to work as Scorbie expects - but looking at t...
by MikeP
November 6th, 2014, 12:39 pm
Forum: Patterns
Topic: Thread for your unsure discoveries
Replies: 1728
Views: 838424

Re: Thread for your unsure discoveries

If I'm not mistaken, there is no (trivial) Heisenburp reaction between gliders. I think I once did such a search with up to 3 gliders - but of course, it didn't cover all possible collisions. Does the "Heisenblinker" reaction count? x = 16, y = 6, rule = B3/S23 b2o11bo$obo10b2o$2bo10bobo$4b3o$4bo$5...
by MikeP
October 19th, 2014, 4:09 am
Forum: Patterns
Topic: Soup search results
Replies: 2097
Views: 1204723

Re: Soup search results

This one takes only 94 generations to settle down into a large pair of still lives plus just 3 bits of junk. x = 16, y = 16, rule = B3/S23 2bobo2bo3b2o2bo$bobo5b3o2b2o$4b3obob2o3bo$b2obo3b2o2b4o$o5bo2b2o2bo$bo 2bo2bo4bo$b2o3bobob5o$o2b2obo2bob4o$2o2bobobobobob2o$bobo2b4o2bobo$bob ob2o3bo4bo$bob6o2b4...
by MikeP
August 5th, 2014, 1:24 pm
Forum: Scripts
Topic: Bellman
Replies: 158
Views: 115573

Re: Bellman

MikeP wrote:I'll fix this later today.
Done!
by MikeP
August 5th, 2014, 4:48 am
Forum: Scripts
Topic: Bellman
Replies: 158
Views: 115573

Re: Bellman

#ifdef __APPLE__ #include <limits.h> // for INT_MAX #define MAXINT INT_MAX #else #include <values.h> #endif Actually I think your way to do it is correct on all platforms, because INT_MAX is defined by the C standard but MAXINT doesn't seem to be defined anywhere as far as I can see from a quick bi...
by MikeP
August 2nd, 2014, 7:24 am
Forum: Scripts
Topic: Bellman
Replies: 158
Views: 115573

Re: Bellman

The latest version of Bellman at https://sourceforge.net/projects/bellman/ adds basic support for a single axis of reflectional symmetry. Example: #S first-encounter 1 #S last-encounter 10 #S repair-interval 10 #S stable-interval 5 #S max-live 10 #S max-active 10 #S symmetry 6:horiz-odd #P 0 0 ..? ....
by MikeP
August 2nd, 2014, 6:04 am
Forum: Scripts
Topic: Bellman
Replies: 158
Views: 115573

Re: Bellman

codeholic wrote:I wonder, if Bellman could find interesting perturbations of the pre-pulsar.
A quick hack found http://conwaylife.com/forums/viewtopic. ... 820#p12820 which I think proves that the principle works!
by MikeP
August 2nd, 2014, 6:02 am
Forum: Patterns
Topic: Thread For Your Accidental Discoveries
Replies: 1499
Views: 938038

Re: Thread For Your Accidental Discoveries

I found this new variant of the p30 pre-pulsar hassler while experimenting with modifying Bellman to add symmetry constraints: x = 24, y = 17, rule = B3/S23 2b2o16b2o$bo2bo14bo2bo$bobo16bobo$2ob2o14b2ob2o$12b3o$2ob2o7bobo4b2ob 2o$bobo3b2o3b3o5bobo$bobo16bobo$2ob2o14b2ob2o$3bo16bo$2obo3b2o3b3o5bob 2o...
by MikeP
August 2nd, 2014, 5:15 am
Forum: Scripts
Topic: Bellman
Replies: 158
Views: 115573

Re: Bellman

I think it wouldn't be too confusing, but it would probably result in worse performance and more complicated code Actually, with my proposed change it'll be about the same - Bellman will still evolve and validate the entire universe. Yes, it's doing redundant work, but then it does quite a bit of r...
by MikeP
August 2nd, 2014, 4:39 am
Forum: Scripts
Topic: Bellman
Replies: 158
Views: 115573

Re: Bellman

Yes, that ought to be doable. I think the easiest way to do this will be to modify bellman_choose_cells() to find the image(s) of the chosen point under the various symmetries and set them all at once before recursing. Should it insist that the input pattern matches the symmetry constraints? Clearly...
by MikeP
December 28th, 2013, 2:09 am
Forum: Patterns
Topic: (8,1)c/63
Replies: 2
Views: 2957

(8,1)c/63

This interesting pi-heptomino reaction was posted by codeholic in the "unsure discoveries" thread: (8,1)c/63 pi crawler: x = 82, y = 111, rule = B3/S23 obo$b2o$bo21$18bo$19bo$17b3o22$34bo$35b2o$34b2o22$52bo$50bobo$51b2o22$ 67bobo$68b2o$68bo4$80bo$79bobo$78bo2bo$78bo2bo5$80b2o$80b2o! There are a few ...
by MikeP
December 21st, 2013, 1:02 pm
Forum: Patterns
Topic: Thread for your unsure discoveries
Replies: 1728
Views: 838424

Re: Thread for your unsure discoveries

Oh, and did you use Bellman to find that? Yes, they were Bellman finds. Here are a couple more: x = 31, y = 43, rule = B3/S23 24b2o$24b2o2$17b2o$2o15bobo5b2o$2o17bo5b2o$17b3o2$26bo$26b3o$17b3o9bo$ 2o17bo6b2o2bo$2o15bobo7bob2o$17b2o8bo$26b2o$27bob2o$25bobob2o$25b2o8$ 24b2o$23bobo$24bo$17b2o$2o15bobo...
by MikeP
December 18th, 2013, 12:15 pm
Forum: Patterns
Topic: Geminoid Challenge
Replies: 166
Views: 369967

Re: Geminoid Challenge

Here's another one: allow multiple elbow blocks. You'd need to add glider pairs for "duplicate elbow" and "delete elbow", and compiler logic to keep track of them. Then of course you could think about allowing other elbow still lifes too... but of course with each step the number of reactions for th...
by MikeP
December 17th, 2013, 2:28 pm
Forum: Patterns
Topic: Thread for your unsure discoveries
Replies: 1728
Views: 838424

Re: Thread for your unsure discoveries

I've got a sneaking suspicion that I've seen these p46 shuttle stabilisations somewhere before, but I have no idea where. Does anyone know if they're new? x = 32, y = 49, rule = B3/S23 22b2o$23bo$23bob2ob2obo$24bobobob2o2$17b2o$2o15bobo$2o17bo$17b3o4$17b 3o7b2o$2o17bo7b2o$2o15bobo$17b2o15$22b2o$23bo...