ConwayLife.com

Ntsimp

Here are some I don't think have been posted yet, of periods 25, 31, 34, 35, 48, 56, 30, and 55:

x = 25, y = 27, rule = B45678/S123567
b8o7b4o$b8o6b5o$10o4b2o2b2o$b8o6b3o$10o7b2o$17bo2$5bo$3b5o8b3o$b2ob3ob
2o3b5o$2o7b2o4b4o$4o3b4o5bobo$3ob3ob3o7bo3$5b2o7b11o$3b6o5bobo5bobo$2b
3o2b3o4b3o5b3o ...

Ntsimp

Here's a p20, 2 p22s, and a p40:

Code: Select all

x = 14, y = 19, rule = B578/S01234678
3o2bo$2bobo$b5o$3b2o$3b2obo3$bo7b3o$ob3o2bo3b3o$2bo5b3o$bobo6bobo$2bo
9bo3$3o2bo$3bobo$bob3o$3b2o$3b2o!

Ntsimp

These are programs written in the C language. You convert them into a runnable program by running a "C compiler". I don't know Mac OS, but Google should help you install a free compiler such as gcc.

Ntsimp

I found it a couple of days ago, but I'm pretty sure it hasn't been posted here before.

Ntsimp

Are there only three still lifes in this rule?

Ntsimp

New p3 and 2 new p4s:

Code: Select all

x = 16, y = 16, rule = B34/S13
bob2o$bobobo$6o$3bo$3b3o$3bo6$13b2o$b2o8b2o$o2b3o5bobo$3o2bo7bobo$3b2o
6b2o2bo!

Ntsimp

And here is an interesting p116:

Code: Select all

x = 15, y = 4, rule = B34/S13
6b3o$b3o3bo3b3o$2obo2b3o2bob2o$obo9bobo!

Ntsimp

Here are oscillators of periods 5, 7, and 8:

Code: Select all

x = 25, y = 8, rule = B34/S13
12bo$4b3o4bo2bo7b3o$3bo3bo2bo3bo8b2o$2bo4bo6bo6b2o$bo3bo5b4o7b2o$bo2bo
$bo$2b2o!

Ntsimp

I'm running Golly 2.2 in Linux. I've found that pasting patterns doesn't change the rule. I think in some earlier versions it did. Is this intended behavior, a setting I need to find and change, or a bug?

Ntsimp

Here's a smaller p38 oscillator, though I'm sure it's not minimal:

Code: Select all

x = 17, y = 9, rule = B3678/S34678
2b3o3bo3b3o$4b9o$bob11obo$2o2b9o2b2o$b15o$2b13o$b15o$2b13o$2b2obobobob
ob2o!

Ntsimp

Here are a few new oscillators, of periods 6, 8, 10, 11, and 14:

Code: Select all

x = 54, y = 14, rule = B3568/S2478
12bobo$13bo$12bobo2$b2o9b2o8bo2bo9b4o11bo$o2bo8b2o8b2obo8b6o7b7o$b3o8b
2o8bo2b2o7b2o2b2o7bo2bo2bo$b3o8b2o8bo2b2o7b2o2b2o7b7o$o2bo8b2o8b2obo8b
6o10bo$b2o9b2o8bo2bo9b4o2$12bobo$13bo$12bobo!

Ntsimp

Or you could just use gencols.

Ntsimp

Here's a p100:

Code: Select all

x = 6, y = 6, rule = B45678/S012367
obo$b3o$2b3o$4o$3b3o$5bo!

There are really a lot of oscillators in this rule. I'll have to post some more later.

Ntsimp

This rule also has a small p54:

Code: Select all

----OOOOO
---------
----OOOOO
---------
O-O------
O-O------
O-O------
O-O------
O-O------

Ntsimp

Now here's a dozen of my favorite three-glider collisions in this rule, thanks to Paul Tooke's version of gencols:
x = 54, y = 66, rule = B36/S235
9bobo12bo15bobo$10b2o13bo15b2o$10bo12b3o15bo7$5b2o$4bobo16b2o$6bo7b3o
5bobo21b3o$14bo9bo7b2o12bo$15bo15b2o14bo$33bo4b2o$37bobo$39bo2$17bo$
16bo$16b3o ...

Ntsimp

Here are your oscillators sorted by period, plus the ones I've found so far:
x = 289, y = 159, rule = B578/S01234678
170bo$96bo2bo2bo32bo13b2o2b2o13b5o$41b2o2b2o2b2o3b2o2b2o2b2o3b2o2bo2b
2o4b2o2bo2b2o5b11o8b2o2b2o14b5o9b10o9b9o39bob3o18bobo$28b2o2bo2b2o4b ...

Ntsimp

Like I say, my C knowledge isn't what it should be. I haven't found the bug in the source code yet, but it's definitely a bug.

Using the same options in both yours and the original should give the same results, right? Here's one from the Examples script included with the original:
gencols -pat obj ...

Ntsimp

Ntsimp wrote:
The modified version has a bug in the "-filt" option
Can you describe the symptoms?
For example, I'm looking at 3-glider collisions in B36/S235, some of which produce a pair of blinkers. Without -filt the program finds these. With -filt 2 or -filt p it doesn't, but with -filt a it ...

Ntsimp

The modified version has a bug in the "-filt" option, confusing one parameter for another. My knowledge of C is pretty rudimentary, but I'm trying to find the problem.

Ntsimp

Paul Tooke wrote: it took less than a couple of minutes to find using gencols (modified to handle other CA rules)

Have you released this source code anywhere? Would you be willing?

Ntsimp

Yeah, that was just by trial and error. I happened to find this same puffer a few weeks ago, then just played around with adding stuff behind it until I found this.

Ntsimp

It's not hard to stabilize the end:

Code: Select all

x = 9, y = 10, rule = B37/S23
bo5bo$3o3b3o$ob2ob2obo4$4bo$3bobo$3bobo$4bo!

Ntsimp

Just to keep things simple, let's say a "phoenix" is an oscillator in which no cells ever survive.
In which rules can they exist, and which periods can they have?
Since removing survival rules can never affect a phoenix, finding phoenices is equivalent to finding oscillators in rules without ...

Ntsimp

I used a minimally-hacked version of David Eppstein's gsearch. I too would like to know what Paul's using.

Ntsimp

Here are oscillators for a few new periods: 12, 13, 18, 19, 22, 23, and 48:
x = 46, y = 39, rule = B478/S234678
o2bobobo6bo6bobobo2bobobo3b7o$13bobo19bo2b2o2bo$o6bo4bo3bo8bo6bo2bo2b
5o$11bobo2bo18b7o$o2bobobo2bo3b2o5bobobo2bobobo2b6o$11bo2bo20bob3obo$o
2bo8b2o7bo6bo6bob2obo$35b3o ...

ConwayLife.com

Search found 46 matches

Re: Oscillators in B45678/S123567

Re: B578/S01234678

Re: How to run .c files?

Re: B34/S13

Re: B34/S13

Re: B34/S13

Re: B34/S13

Re: B34/S13

Pasting patterns with other rules in Golly

Re: Day & Night (B3678/S34678)

Re: B3568/S2478

Re: three-glider collisions

Re: B45678/S012367

Re: small period 9 oscillator in B34/S25

Re: B36/S235

Re: B578/S01234678

Re: Adapting Gencols

Re: Adapting Gencols

Re: Adapting Gencols

Re: Puffer with unstable trail (B37/S23)

Re: Puffer with unstable trail (B37/S23)

Re: Puffer with unstable trail (B37/S23)

Phoenices

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

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