ConwayLife.com - A community for Conway's Game of Life and related cellular automata
Home  •  LifeWiki  •  Forums  •  Download Golly

Thread for basic questions

For general discussion about Conway's Game of Life.

Re: Thread for basic questions

Postby mollwollfumble » July 27th, 2016, 7:38 pm

muzik wrote:House is pretty close.

x = 5, y = 12, rule = LifeHistory
2A.2A$A3.A$.3A7$2D.2D$D3.D$.3D!

Yes, it makes an exact copy of itself with buffer space around, but that first copy doesn't live long enough without stabilisation (such as a block train) so doesn't quite qualify.

Any other small grandfather pattern like switch engine or queen bee with finite life?

My reason is I'm writing some code to detect natural transients like switch engine and queen bee from a random start, and want to know if I should be looking for anything else at the same time.
mollwollfumble
 
Posts: 14
Joined: July 18th, 2016, 7:48 pm

Re: Thread for basic questions

Postby wildmyron » July 30th, 2016, 7:43 am

mollwollfumble wrote:Any other small grandfather pattern like switch engine or queen bee with finite life?

My reason is I'm writing some code to detect natural transients like switch engine and queen bee from a random start, and want to know if I should be looking for anything else at the same time.

Possibly the next most likely formation is the pair of B-hptominoes which form the frontend of the pufferfish which is at least semi-natural, i.e. occurs in symmetric soups.
The latest version of the 5S Project contains over 221,000 spaceships. Tabulated pages up to period 160 are available on the LifeWiki.
wildmyron
 
Posts: 1229
Joined: August 9th, 2013, 12:45 am

Re: Thread for basic questions

Postby Extrementhusiast » July 30th, 2016, 9:04 pm

wildmyron wrote:
mollwollfumble wrote:Any other small grandfather pattern like switch engine or queen bee with finite life?

My reason is I'm writing some code to detect natural transients like switch engine and queen bee from a random start, and want to know if I should be looking for anything else at the same time.

Possibly the next most likely formation is the pair of B-hptominoes which form the frontend of the pufferfish which is at least semi-natural, i.e. occurs in symmetric soups.

That reminds me: twin bee.
I Like My Heisenburps! (and others)
User avatar
Extrementhusiast
 
Posts: 1794
Joined: June 16th, 2009, 11:24 pm
Location: USA

Re: Thread for basic questions

Postby GUYTU6J » August 10th, 2016, 5:44 am

Is there a synthesis for something like Max ?
Current status: outside the continent of cellular automata. Specifically, not on the plain of life.
User avatar
GUYTU6J
 
Posts: 667
Joined: August 5th, 2016, 10:27 am
Location: outside Plain of Life

Re: Thread for basic questions

Postby DivusIulius » August 10th, 2016, 6:00 am

GUYTU6J wrote:Is there a synthesis for something like Max ?

Er... None that I know of.
User avatar
DivusIulius
 
Posts: 89
Joined: April 1st, 2009, 11:23 am

Re: Thread for basic questions

Postby muzik » August 11th, 2016, 3:28 pm

What is the smallest 1-cell-thick pattern that emits a non-glider spaceship?
Bored of using the Moore neighbourhood for everything? Introducing the Range-2 von Neumann isotropic non-totalistic rulespace!
muzik
 
Posts: 3462
Joined: January 28th, 2016, 2:47 pm
Location: Scotland

Re: Thread for basic questions

Postby Alexey_Nigin » August 11th, 2016, 4:32 pm

muzik wrote:What is the smallest 1-cell-thick pattern that emits a non-glider spaceship?


See this.
There are 10 types of people in the world: those who understand binary and those who don't.
User avatar
Alexey_Nigin
 
Posts: 323
Joined: August 4th, 2014, 12:33 pm
Location: Ann Arbor, MI

Re: Thread for basic questions

Postby muzik » August 11th, 2016, 6:08 pm

Right then... any non-standard spaceship emitters?
Bored of using the Moore neighbourhood for everything? Introducing the Range-2 von Neumann isotropic non-totalistic rulespace!
muzik
 
Posts: 3462
Joined: January 28th, 2016, 2:47 pm
Location: Scotland

Re: Thread for basic questions

Postby DivusIulius » August 18th, 2016, 6:04 am

muzik wrote:Right then... any non-standard spaceship emitters?

Good question. It turns out that I never ventured into the wilderness of 40-bit 1-cell thick patterns. :?
User avatar
DivusIulius
 
Posts: 89
Joined: April 1st, 2009, 11:23 am

Re: Thread for basic questions

Postby gameoflifeboy » August 18th, 2016, 2:49 pm

muzik wrote:Right then... any non-standard spaceship emitters?


One pattern on the aforementioned Infinite Growth blog post emits a MWSS on MWSS 1, instead of two MWSSes (as it was listed to produce):

x = 30, y = 1, rule = B3/S23
4ob3ob9ob5ob5o!
User avatar
gameoflifeboy
 
Posts: 474
Joined: January 15th, 2015, 2:08 am

Re: Thread for basic questions

Postby muzik » August 24th, 2016, 12:54 pm

Is there a name for SS linear growth (such as bricklayer), and can we invent one?
Bored of using the Moore neighbourhood for everything? Introducing the Range-2 von Neumann isotropic non-totalistic rulespace!
muzik
 
Posts: 3462
Joined: January 28th, 2016, 2:47 pm
Location: Scotland

Re: Thread for basic questions

Postby dvgrn » August 25th, 2016, 9:21 am

muzik wrote:Is there a name for SS linear growth (such as bricklayer), and can we invent one?

I think "stretcher" is as close as we have at the moment, and that may not be very close. Jason Summers used "pseudo-stretcher" sometimes for things that sent gliders out to add to the far end of growing pattern -- e.g.,

#C c/124 pseudo-snake-stretcher
#C Jason Summers, 4 Sep 1999
x = 445, y = 469, rule = B3/S23
43boo$43boo$68boo$68boo$$44bo$43b3o23bo$42bo3bo21bobo$41bob3obo19bo3bo
$42b5o20b5o$66boo3boo$67b5o$32boo34b3o$32boo35bo$$41boobbo$43bobo$45b
oo23bo$46boo19boo$44boboo19b3o$44b3o21boo$68bo$67bobo26boo$29boo3boo3b
oo3boo21boo27boo$42bo$30bo3bo4bo5bo$31b3o6booboo6bobo14booboboo$31b3o
7bobo8boo$42bo9bo8bo6bo5bo$42bo16boo$60boo7booboo$71bo$$30bo5bo22bo$
29b3o5bo4boo6boo8boo$29b3o3b3o4boo6boo7boo18boo$50boo18boo8boo$27boo3b
oo17bo18boo7bo6bo$27boo3boo16bobo33boo$49boobo32bobo$$44bo$42bobo5boo
9bobo$43boo5boo8bo44bo$55boobbo4bo41bo$55boobobboboo39b3o$59boo$$43bo$
35bo7b3o$27bo7boo9bo$26b3o5bobo8boo24b3o$25b5o43bo6boo$24boo3boo41bo7b
oo$25b5o$25b5o17b3o$26bobbo29bo$26bo3bo16bobo7bobo$30bo15b5o7boo$27boo
bo14boo3boo$29bo15boo3boo3$26boo3boo41bo$26bo5bo41bobo$49boo26boo$27bo
3bo18boo25boo4boo57boo$28b3o14boobbobbo24boo4boo57boo$46bo3bo13boo8bob
o$43b3o17bobo8bo$43bo19bo$62boo$26boo11boo$27bo7b4o4boo26boo$24b3o8b3o
boobboo26b3o$24bo5boo8bo24boobbobbobo60bo$30boo33boobboobboo61bo$53bo
15boo7boo54b3o$51b3o24bobo61bo$30bo19bo5bo22b3o61bo$29bobo18boo4b3o21b
oo59b3o$28bo3bo8b3o15bo5boo13boo$28b5o10bo14boo5bobo10bobo$27boo3boo8b
o22bo13bo$28b5o$29b3o15b3o11bo$30bo6b3o20b3o13boo3boo$37bo9bobo9bo3bo
7boo3boo3boo$34boobbo7b5o7bob3obo6boo43boo$33bobo9boo3boo7b5o14b3o36b
oo$35bo9boo3boo26b3o35bo6bo$79bo43boo$122bobo$45boo$43boobo17b3o$43bo
22bo$65bo$31b3o10b3obo27b3o$30bo3bo13bo27b3o$48bo26bo3bo$29bo5bo$29boo
3boo38boo3boo$$62b3o$32bo10boo3boo11bo3bo42b3o$31bobo11b3o12bo5bo43bo$
31bobo10bo3bo11booboboo42bo$33bo11bobo117bo$33bo12bo119bo$30bobbo29bo
100b3o$31boo29bobo107bo$62bobo12boo94bo$45boo16bo13boo92b3o$45boo$19b
oo42boo$19boo42boo$44boo$44boo$19b3o22boo40boo$19b3o23bo41boo$44bobo
39bo6bo$44bobo46boo$45bo46bobo$17boo3boo$18b5o$19b3o20boo3boo$8boo10bo
21bobobobo$8boo33b5o$44b3o$45bo122boo$168boo3$21bo$22boo54b3o$21boo57b
o$8bo33bobo34bo$7b3o32boo$6b5o32bo$5boo3boo71boo110bo$6b5o4boo3boo61b
oo111bo$6bo3bo6b3o8bobo15b3o59boo84b3o$7bobo6bo3bo8boo14bo3bo34bo22bo
bbo57bo33bo$8bo8bobo9bo6bo7bo5bo32bobo24bo58boo32bo$18bo15boo9bo3bo33b
obo24bo57boo31b3o$35boo9b3o35bo23bobo$6bo39b3o59bobo$4booboo100bo$13bo
4boo6boo8bo19boo23booboboo$3bo5bo4bo3boo6boo9boo18boo22bo5bo$12b3o21b
oo8boo8bo6bo18bo3bo19boo3boo30boo$3booboboo36boo15boo7boo9b3o20bo5bo
29bobo$25boboo33bobo7boo70bo$25bobo79bo3bo37b3o$26bo81b3o40bo$26boo
122bo$21bo4boo$19bobo4boo7boo$20boo9boobobboboo45bo$31bo4bobboo46bo$
35bo49b3o$32bobo36b3o32bo$3bo8bo6bo50bo3bo31bobo$bb3o7boo5b3o47bo5bo
30boo$b5o5bobo8bo25b3o18bo5bo$obobobo14boo27bo21bo7b5o26bo34boo$oo3boo
42bo6boo12bo3bo4bob3obo8bo15b3o22boo9boo$56boo13b3o6bo3bo7bobo14b5o22b
oo33boo$23b3o46bo8b3o9boo13boo3boo20bo35boo$5boo16b3o56bo26b5o$5boo15b
o3bo82bo3bo$7bo28bo32b3o38bobo112bo$5b3o13boo3boo6bobo32b3o39bo114bo$
3bo31boo31bo3bo9boo6boo132b3o$3b5o68bobo3boo6boo106bo33bo$4boo61boo3b
oo3boo31boo34b3o50boo32bo$77bo13bo18boo33bo3bo21b3o24boo31b3o$52bo37bo
bo42boo7bo5bo19bo3bo$bboo3boo17boo23b4o27boo5bobbo42boo7bo5bo18bo5bo$
3b5o19boo21boobobo25boobo3bobbo55bo21booboboo$3booboo18bo22b3obobbobb
oo20boo30boo30bo3bo$3booboo13boo27boobobo3boo19bo3bo3bobbo9boo9bobo31b
3o$4b3o15bo17boo9b4o25bob3o5boo9b3o10bo19b3o10bo24bo$19b3o17bobo10bo
27bo3bo10boobbobbobo14b3o12b3o34bobo$19bo19bo55boobboobboo16bo11bo3bo
33bobo$38boo59boo19bo11bo5bo5b3o25boo$bboo11bo117bo3bo6b3o27bo$3bo7boo
bboob3o45b3o7boo5bo50b3o6bo3bo25b3o20boo$3o8boo4b4o24boo18bo3bo5bobo5b
3o65bobo18bo3bo19boboo$o5boo7boo24boobboobboo26bo8bo4bobo48boo3boo3boo
17bob3obo19bobbo$6boo33bobobbobboo13bo5bo14boo5boo58bo14bo4b5o20bo$6b
oo21bo12b3o9boo8boo3boo21bo27boo43boo34bo$6bo20b3o13boo9boo32bo31boo
11bobo30boo33bo$5bobo18bo5bo54bobo43bobbo$5bobo10b3o5boo4b3o5boo27boo
15bo3bo44boobo59bobo$6bo13bo14bo4bobo26bobo15b3o$19bo14boo4bo30bo13boo
3boo13boo28bo$70boo34boo27boboo21boo$3boo3boo13b3o10b3o28bo37bo14bo15b
o23boo36bo$3bobobobo3boo8b3o10b3o28bobbo50bo23boo6boo41bobo$4b5o4boo7b
o3bo40bo51b3o23boo6boo42boo$5b3o39boo3booboboo71boo3boo36boo$6bo14boo
3boo19boo66boo14b5o37boo$34boo3boo11bo5bo7booboboo41bo3bo12booboo8bo8b
3o10bobo86bo$35b5o73bo5bo11booboo6bobo9boo11boo87bo$36b3o14booboo8bo5b
o40bo3boboobboo7b3o8boo6boo14bo86b3o$20boo15bo17bo29boo26bo5bo3boo26b
3o74bo33bo$20bobo18b3o23booboo14bo17boo8bo3bo33bobo74boo32bo$20bo22bo
25bo13b3o17bobo9boo13bo22boo8b4o61boo31b3o$42bo10bo29bo19bo25bobo26boo
7bo$7b3o42bobo47boo25bobo10boo7bo6boobboo3bo4bo$6booboo9bo30bo3bo10boo
11boo16bo32bo12boo7bo9boobbo5boo$6booboo40b5o11bo7boobobboboo11boo44bo
7b3o18bobo$6b5o39boo3boo7b3o8boobbo4bo11bobo11b4o32bo31b3o$5boo3boo39b
5o8bo5boo8bo24boo7bo12booboboo12b3o29boobo$38b3o11b3o14bobbo8bobo21boo
bboo3bo12bo5bo15bo29bobo$21b3o29bo15bo23bo15boobbo4boo8bo3bo15boo115b
oo$20bo3bo13bobo28bo21b3o24boo9b3o3bo47boo79boo$19bo5bo11b5o27bobo18bo
5bo38boo46boo81bo$9boo8bo5bo10boo3boo26bobo18boo4b3o35bobo$22bo13boo3b
oo27bo28bo79bobo$20bo3bo73boo78boobo$21b3o64bo10b3o76b3o$7boo13bo16bo
27boo3boo13bobo10bobo45booboboo$7boo28boo28bo5bo12bo3bo9bobo$53boo32b
3o11bo30bo15bo5bo$21boo13bo16boo13bo3bobboo8boo3boo20bo19bo31boo$21boo
46b3o4boo33boo3boo3boo8bobo15booboo9bobo$37bobbo34bo22booboboo6bobo16b
ooboo16bo13bo8bo$39boo57bo5bo12bo3bo7bo5bo37bobo80b3o$99bo3bo14b3o11bo
38boo3bo51bo27bo$84boo14b3o3bo11b3o8boo3boo35boo3bo9boo38bobo28bo$83b
oo21boo40boo21boo3bo9boo39boo$85bo19bobo41bo17boo4bobo$72bo44bo28b3o
17bobo5bo$70booboo41b3o27bo19bo$115bo3bo45boo92b3o$69bo5bo41bo11boo11b
oo82bobo5bobo22bo$114bo5bo9bo7boobboobboo78boo6boo24bo$69booboboo27bo
10bo5bo6b3o8boobbobbobo24boo53bo7bo$86bo16bo11bo3bo7bo5boo9b3o21boo4b
4o55bo$85b3o14bobo11b3o14boo9boo22boobboob3o54boo$84b5o12booboo50bo6b
3o6bo8boo44boo3bobo$83boo3boo10bo5bo47b3o6bo17boo45bo$103bo49bo5bo4bo
62bo$100boo3boo46boo4b3o65boo$162bo134boo$85b3o73boo133boo$71boo12b3o
14bo195bo$71boo29bo29b3o46b3o$101bo15boo12bo3bo4boo38booboo$85boo30boo
11bo5bo3boo38booboo$85boo43booboboo37boo4b5o$103boo43booboboo24boo3boo
$103boo38b3o26bobbo$136bo6bo4bo5bo8b3o5bo$135boo7bo17bo3bo6bo5bo$149b
ooboo7bo5bo9boobo$134boboo13bo9bo5bo12bo$133bobboo150b3o$133b4o30bo9bo
boo107bo$149bo16boo11bobbo106bo$148bobo15boo12bobo$132boo3boo8bo3bo12b
obboo$135bo11b5o13bobo$132bo5bo7boo3boo12boo$133booboo9b5o139b3o$134bo
bo11b3o28b3o109bo$135bo13bo13boo3boo8bo3bo109bo$135bo27boo3boo7bo5bo$
178bo3bo82bo9boo$165b3o11b3o82boo10boo$165b3o11b3o82bobo8bobo$166bo
108b3o$134boo$134boo$180boo147boo$148boo30boo146boo$148boo180bo$166boo
$166boo$$232boo$232boo$211bobo$211bo3bo30boo$195bo19bo30boo$193b4o14bo
4bo4boo$187boo3boboboo4bo12bo5boo20bo6bo$187boobbobbob3o5boobo3bo3bo
26bo8bo68b3o$192boboboo5b4obobbobo27bobbo4bobbo67bo$193b4o6boobboo33bo
bo4bobo69bo$195bo27boo8bo41bo$222bobbo6b3o39bobo$211bo13bo5b5o37bo3boo
6boo$211bo13bo4boo3boo25boo9bo3boboo4bobo52boo$222boobo5b5o16b3o7boo9b
o3bob3o4b3o34b3o14boo$209bo12boo7bo3bo18bo19boboboobbo4b3o6boo25bo$
232bobo18bo21bo4boo4b3o7boo26bo$233bo51bobo$195boo26boo60boo$194b3o3b
oobo19boo5boo27b3o$184boo5boboo5bo3bobbo23bo22boo3bo12bo$184boo5bobbo
4bo4bobboo19b3o6bo16bobo3bo11bobo$191boboo4b4o5boo11bo6bo8boo16b3o14b
oo$194b3o3bo7b3o11boo12bobo17boo$195boo11boo11boo30boo106boo$207boo8b
oo34b3o66bo37boo$207bo9bobo46boo54boo38bo$219bo46boo53bobo$219boo33boo
$254boo$$221boo$221bo38boo62boo$210bo8bobo18bo15boobobboboo59boo$208bo
bo8boo17bobo15bo4bobboo8b3o47bo$198boo6boo28boo14boo6bo13bo$197bo3bo4b
oo28boo13boo4bobo15bo$196bo5bo3boo28boo15bo33bo$186boo8bo3boboo4bobo
20boo5bobo7boo37boo$186boo8bo5bo7bo19bobo7bo7bobo25bo5boo4boo$197bo3bo
23boo3bo19bo25bobo3boo4b3o7boo8b3o$198boo23bobbobboo19boo12boo11bobobb
oo4boo8boo10bo$209bo50bo3boo11bobbo6boo20bo$210boo11bobbo26boo4boo16bo
bo7bo$209boo13bobbo24bobo4bobo14bobo76b3o$225bobo26bo21bo78bo$213boo
11bo129bo$213boo$225boo$200bo24boo52bo$197b4o3boboo58boobboo6b4o$196b
4o4boboboobboo31b3o13bobobbob4o5boobobo3boo$189boo5bobbo3booboboobbobo
19bo12bo11bo3bo3boboo5b3obobbobboo$189boo5b4o3boo8b3o7boo9b4o8bo12bo
12bo4boobobo$197b4o3boo8b3o6boo10b4o10boo7bo4bo14b4o111boo$200bo12b3o
19bobbo9bobo8bo19bo12bo99boo$212bobo20b4o8b3o4boo3bo3bo28boo100bo$212b
oo12boo6b4o8b3o4bobbo4bobo27bobo$225bobo6bo12b3o4boo$225bo22bobo133boo
$224boo23boo133boo$$294boo79bo$295boo78boo$294bo53boo24bobo$348boo$
330bo$329b4o29boo$312boo14boobobo28boo$304bo7bobbo11b3obobbobboo38boo$
278b3o22bo3boo7bo11boobobo3boo39boo$280bo22bo5bo6bo12b4o44bo$279bo24b
5o7bo7bo5bo17b3o$312bobbo9bo21bo3bo$312boo9b3o13boo48boo$339boo5bo5bo
35bobo$326boo18boo3boo34b3o12bo$325bobo33b3o14boo6b3o8boo3b4o$327bo10b
oboo21bo14boo7b3o8boo3b4o$338bobo8bo12bo25bobobbooboboo3bobbo5boo$332b
o6bo10bo38boobboobobo4b4o5boo$330bobo6boo9bo44boobo3b4o$309bo8boo11boo
6boo61bo$307bobo6bobbo19boo5boo$300boo4bobo7bo3bobboo22bo22boo53boo$
262bo37boo3bobbo7bobboobb3o18b3o23boo16bo35boo$262boo42bobo16boobo15bo
41boo38bo$261bobo43bobo4b3o8bobbo58boo$234boo73bo15boobo42boo$234boo
87b3o7boo34boboo9boo59boo$214boo107boo8bobo23boo8bo11boo60boo$213bobo
32boo85bo23bobo7bo13bo$199bo12b3o4boo27boo14boo69boo22bo9bobbo$199b4o
8b3o4bobb4o40boo103boo$189boo9b4o8b3o4boob3o39bo$189boo9bobbo9bobo18b
3o100boo8bo30boo$194bo5b4o10boo17booboo99bo7bobo30b3o9bo$194bo4b4o30b
ooboo86boo9bobo8boo6boo16boobbobbobo7boo$199bo25boo6b5o36bobo49bo8boo
15bo3bo15boobboobboo7bobo$225boo5boo3boo34bobbo36boo12bo23bo5bo18boo$
213boo10boo21b3o21boo10bo6bo21boo4bo7bo22boobo3bo$213boo11bo23bo13boo
4boo3bo8bo5bobo17boo5boo8bo23bo5bo45boo$225bobo21bo14boo6boo9bo6boobo
8boo5b3o5bobboo4bo20boo3bo3bo7boo30boboo3b3o$224boobo45bobbobboo9boob
oo3boobboo6boo6b5oboo20bobo5boo8bobo25bobbo3bo5boobo14b3o$274bobobbobb
3o5boobo4boo13boo4bo21boo3bo19bo24boobbo4bo4bobbo5boo9bo$219bo59b4o7bo
bo20boo26boobboo19boo6boo4boo8boo5b4o4boobo5boo8bo$194boo21bobo5boo53b
oo9bo82bobo3boo7b3o7bo3b3o$192bo3bo5bobb3o10boo5boo5boo93bo3b3o40bo15b
oo11boo$186boo3bo5bo9bo3bo21bo22boo70bo4bo6b3o48boo$186boobboobo3bo8bo
4bobo16b3o22bobbo67b3o3bo7boo50bo33boo$191bo5bo16boo14bo27bo14bo69boo
80bobo$192bo3bo17boo42bo12boo69b3o82bo$194boo18boo39boobo8boo3boo67bob
o$211bobo5boo23boo9boo9boo45bo8bobbo15boo20bo17b3o9boo$211bo7bobo22bob
o21bo43bobo10bo37boo16bo9bobbo7bo$221bo22bo65boo3bo5boo3bobbo32bobo11b
o5bo7bo7boo3bo$221boo33boo47boo3boo3bo4boboboo3b4o20bo20b4o12bo6bo5bo$
256boo47boo3boo3bo14b4o5boo11bobo18boboboo11bo7b5o7boo$312bobo5boo8bo
bbo5boo10bo3boo8bo6bobbob3o11bobbo16boo$223boo50bo37bo16b4o17bo3boo5b
4o6booboboo14boo15bo$223bo10bo27boo10boo53b4o18bo3boo4b4o5b8o$211boo8b
obo8bobo6boo15boobboobboo6bobo52bo12boo8bobo6bobbo4bobbo3bo$211bobbo6b
oo10boo6bobbo13bobobbobboo73bobo9bo7b4o5boo$197bobo15bo20boo7bo13b3o
79bo20b4o$195bo3bobb3o10bo22bo6bo14boo78boo23bo$195bo19bo29bo37bo7bo$
188boo4bo4bo7boobbobbo18boo6bobbo5boo30b4o5bobo81boo$188boo5bo7bobobbo
bboo19bobo6boo7bobo24boobbobboo8boo79boo$195bo3bo5b3o19boo3bo19bo6boo
16boobboo11boo4boo54bo$197bobo26bobobboo19boo5bobo4boo6boo10bo7boo4boo
54bobo30boo$218b3o4b3o31bo6boo5b3o10bo4bobo45bo17bobo29boo$220bo4boo
47boo10bo4bo47boo16bobbo3boo$214bo4bo8boo47boo51boobboo4boo15bobo4boo$
215bo11b3o47boo51boobboo4b3o13bobo25b3o6b3o$213b3o118boo4boo7bobo4bo
27bo10bo$339boo9boo24bo8bo8bo$227boo21bo15b3o70bo10bo15boo7b3o39boo$
200boo9boo14boo21boo14bo12bo86bobbo4b5o37bo$200bobo7bobo36bobo15bo8b4o
93boo3boo35bo12boo$195boo6bo8bo5bo44boo10b4o9boo76bobbo26boo7boo8bo7bo
4boo$191boobobbobbobbo13bobo17boo24bobo9bobbo9boo75bobbo26bobo7boo8bo
8boo5boo$191boobboo6bo13boobo4boo9bobo25b3o8b4o5bo80bobo29bo18bo4boobb
o5b3o5boo$200bobo14booboo3boo8bo6boo4bo16b3o8b4o4bo81bo8b3o39boob5o6b
oo6boo$200boo15boobo14bobbobbobbobbobo14b3o12bo95b3o45bo4boo$217bobo
15bo6b3oboboo13bobo72bo27boo34boo24boo$218bo9boo6bobo6booboo13boo70b4o
3boboo20boo5boo27bobo$227bobo7boo7boboo77boo5b4o4boboboobboo22bo22boo
bboo12bo$227bo19bobo77boo5bobbo3booboboobbobo18b3o6boo15boo15bo$226boo
20bo85b4o3boo8b3o17bo9boo31b3o$335b4o3boo8b3o9bobo13bo$338bo12b3o11boo
29boboo$350bobo7boo3bo30bobo$350boo8bobo34bo11boo$362bo34boo10boo$362b
oo33boo$397boo$$364boo$364bo39b4o$351bo10bobo16bo17boo7bo8boo$350bobo
9boo16bobo12bo3boobboo3bo8bobo$340boo7boboo26boboo11boo7boobbo9bo$339b
obo6booboo25booboo11bobo$338bo6b3oboboo26boboo47boo$329boo7bobbobbobbo
bbobo21boo4bobo8boo37bobo$329boo7bo6boo4bo21bobo5bo9bobo26bo4boo4b3o$
339bobo26boo3bo19bo25boboboobbo4b3o6boo$340boo26boobboo19boo12boo9bo3b
ob3o4b3o7boo$402boo3boo9bo3boboo4bobo$352bobo41b3obboo15bo3boo6boo$
353boo12boo29bo4bo15bobo$353bo13boobo26bo22bo$356boo12bo$356boo12bo$
367bobbo$342bo7bo17boo40bo10bo$340bobo5b4o37boo18boo9boo$338boo8boobbo
bboo31bobo13bo4bobo7boo4boobboo$332boo4boo11boobboo21bo11bo11bobo13b3o
4boobboo$332boo4boo7bo10boo6boo10bobo20bobo15boo4boo$340bobo4bo10b3o5b
oo13boo9boo6bobbo16boo$342bo4bo10boo21boo9boo7bobo17bo$355boo24boo6boo
6boo3bobo$355boo12boo7bobo7b3o5bobbo4bo$368bobo7bo10boo6boo$368bo23boo
$367boo23boo!

Sening gliders out to add to the far end of growing pattern is more or less what the bricklayer pattern does -- with the minor difference is that the bricklayer's "far end" is an active pattern that requires continuous support, where the pseudo-snake-stretcher's slide guns are aimed at something stable, so you could pause the stretching process with no ill effects.

The problem with "stretcher" is that the current Life Lexicon definition says that the thing being stretched has to be a wick or agar... which in the case of the bricklayer, it's not.

-- As far as I know, anyway. Who knows, there might be a way to ignite that double line of blocks after all. A search along the lines of codeholic's search for the pufferfish tagalong might well turn something up.

Seems a little arbitrary that a pattern can be called a stretcher as soon as its line of stuff can be shown to burn like a fuse. I'd rather extend the definition slightly to allow stretching any repeating pattern, so as to be able to say that Life/Signal-Circuitry/constructor-memory-loop.rle is "a stretcher for an oblique line of eaters", for example.
User avatar
dvgrn
Moderator
 
Posts: 5821
Joined: May 17th, 2009, 11:00 pm
Location: Madison, WI

Re: Thread for basic questions

Postby GUYTU6J » August 26th, 2016, 3:59 am

This page says that
Hickerson then found a grammar for creating arbitrarily large period 2 spaceships.

Where can I see the grammar?
Current status: outside the continent of cellular automata. Specifically, not on the plain of life.
User avatar
GUYTU6J
 
Posts: 667
Joined: August 5th, 2016, 10:27 am
Location: outside Plain of Life

Re: Thread for basic questions

Postby Sokwe » August 26th, 2016, 7:33 am

GUYTU6J wrote:Where can I see the grammar?

David Bell's article, Spaceships in Conway's Life (Part 2), which is available on his homepage.

Keep in mind that these grammars aren't really used anymore, because it is now relatively easy to find any desired extension of a p2 ship with tools like WLS and JLS.
-Matthias Merzenich
Sokwe
Moderator
 
Posts: 1480
Joined: July 9th, 2009, 2:44 pm

Re: Thread for basic questions

Postby muzik » August 29th, 2016, 2:43 pm

Which of these are cis, trans, para and ortho?

x = 25, y = 7, rule = B3/S23
b2o3b2o$2bo3bo9b2ob2o$o7bo5bo2bobo2bo$2o5b2o5b2o5b2o2$4o3b4o3b4o3b4o$o
2bo3bo2bo3bo2bo3bo2bo!
Bored of using the Moore neighbourhood for everything? Introducing the Range-2 von Neumann isotropic non-totalistic rulespace!
muzik
 
Posts: 3462
Joined: January 28th, 2016, 2:47 pm
Location: Scotland

Re: Thread for basic questions

Postby gameoflifeboy » September 1st, 2016, 10:04 pm

muzik wrote:Which of these are cis, trans, para and ortho?


In order, they are the cis, ortho, para, and trans carrier and table.

I found two of the four names, the ones with trans- and para-, on Catagolue (with "aircraft" in place of "carrier"; I changed this in my Catalogue Backup name list to make them more consistent with other names). It seems that these were from one of Achim's censuses. I don't think I saw the other two names anywhere before I put the name in my Catagolue backup, but they seemed like the logical continuation because ortho- and cis- often act like the opposites of para- and trans-.

Anyway, it doesn't matter where the names came from because now we have a nomenclature for a specific type of still life family with four isomers. Furthermore, "up" and "down" can be added to the names to cover eight isomers if the inductor is asymmetric.
User avatar
gameoflifeboy
 
Posts: 474
Joined: January 15th, 2015, 2:08 am

Re: Thread for basic questions

Postby muzik » September 2nd, 2016, 4:06 pm

Is there such thing as a shipstretcher? As in a boatstretcher except the end being extended looks like the end of a ship in at least one generation.
Bored of using the Moore neighbourhood for everything? Introducing the Range-2 von Neumann isotropic non-totalistic rulespace!
muzik
 
Posts: 3462
Joined: January 28th, 2016, 2:47 pm
Location: Scotland

Re: Thread for basic questions

Postby dvgrn » September 2nd, 2016, 7:03 pm

muzik wrote:Is there such thing as a shipstretcher? As in a boatstretcher except the end being extended looks like the end of a ship in at least one generation.

We could make one. Maybe not a very satisfactory one -- I don't know if there's a reasonable reaction that will extend the end in a single step. But just look at Golly's Patterns/Miscellaneous/tubstretch-c124b.rle, and imagine adding a lot more slide guns to

    - add a bit to the end of the long^N barge being stretched;
    - remove it again
If you don't want to count slidegun-shipstretchers, well, it's probably technically possible to do something similar with rakes, though maybe it would take a big pile of high-period low-velocity rakes or something -- I'm not sure how fast the extra bit-twiddling gliders could be packed together.

So I guess the answer is "There definitely _could_ be, but there ain't at the moment."
User avatar
dvgrn
Moderator
 
Posts: 5821
Joined: May 17th, 2009, 11:00 pm
Location: Madison, WI

Re: Thread for basic questions

Postby simeks » September 3rd, 2016, 3:20 am

muzik wrote:Is there such thing as a shipstretcher? As in a boatstretcher except the end being extended looks like the end of a ship in at least one generation.

Two ideas that could be developed into a ship stretcher:

x = 218, y = 214, rule = LifeHistory
2C50.2C$C.C49.C.C$.C.C49.C.C$2.C.C49.C.C$3.2C50.2C5$9.C52.2C$9.C51.C
2.C$9.C52.C.C$57.2C4.C$57.2C3$63.2C$63.2C2$13.2A$13.A.A$13.A3$82.2A$
82.A.A$82.A21$37.2A$36.2A$38.A17$68.3A$68.A$69.A29$85.2A$84.2A$86.A
17$114.2A$113.2A$115.A19$145.2A$145.A.A$145.A23$169.2A$168.2A$170.A
47$215.2A$215.A.A$215.A!
simeks
 
Posts: 369
Joined: March 11th, 2015, 12:03 pm
Location: Sweden

Re: Thread for basic questions

Postby muzik » September 6th, 2016, 11:36 am

Could we engineer a spaceship to move at the same speed a human hair grows (assuming CGoL's c is also the real-life speed of light) and still have it run fairly fast in Golly?
Bored of using the Moore neighbourhood for everything? Introducing the Range-2 von Neumann isotropic non-totalistic rulespace!
muzik
 
Posts: 3462
Joined: January 28th, 2016, 2:47 pm
Location: Scotland

Re: Thread for basic questions

Postby Rhombic » September 6th, 2016, 12:03 pm

Why is the neighbourhood of the central cell in the r-pentomino 4j and not 4r? It's a bit of a shame really...
SoL : FreeElectronics : DeadlyEnemies : 6a-ite : Rule X3VI
what is “sesame oil”?
User avatar
Rhombic
 
Posts: 1056
Joined: June 1st, 2013, 5:41 pm

Re: Thread for basic questions

Postby dvgrn » September 6th, 2016, 12:57 pm

muzik wrote:Could we engineer a spaceship to move at the same speed a human hair grows (assuming CGoL's c is also the real-life speed of light) and still have it run fairly fast in Golly?

Sure, that shouldn't be a problem with current Life technology. At least, we can make something that will run quickly in Golly once the hash tables are populated. It might take a while to get it warmed up, but then Golly could "run away" with it, simulating it pretty much as fast as you want to go, at negligible extra cost.

One likely candidate would be a rebuilt Demonoid or an Orthogonoid, with a speed that's a negative power of two -- let's say (2^-56)c, since that's more or less the rate of hair growth as a fraction of the speed of light. It's better if the step size is also a power of two.

Any factor other than 2^N in the step size or period will multiply the number of hashtiles needed by that factor. At a period around 2^56, you're bound to run out of memory and have to start garbage-collecting -- unless the period is exactly 2^56, in which case Golly knows the entire future history of the pattern as soon as it has calculated one cycle.

We can't get to (2^-56)c by adjusting an existing Demonoid, because the replicator units' 180-degree reflector doesn't have the right phasing mod 8. So a complete rebuild would be needed there, including new self-destruct circuitry.

However, the most recently posted Orthogonoid design could be set up to run at human-hair-growth speed, simply by moving the replicator units far enough apart.

Somebody just has to add the MWSSes to program the existing circuitry to construct a copy of itself and its construction elbow at (0,-256), and shoot down the copy behind it. Once that's done, it's all set to travel at any speed you want!
User avatar
dvgrn
Moderator
 
Posts: 5821
Joined: May 17th, 2009, 11:00 pm
Location: Madison, WI

Re: Thread for basic questions

Postby muzik » September 6th, 2016, 1:51 pm

Now, another question: adapting big spaceships to work reasonably well in Golly.

On my iPad (and probably my computer as well), engineered and engineerable spaceships are pretty slow. Almost ironically, the waterbear is the only ship that can run at really fast speeds!

ParaHBK runs well on lower speeds, but when the gliders go down the middle there's a lot of lag, and changing the step value just makes it slower and more jittery. Similar goes for Demonoids and Gemini. Caterloopillars are kind of fast, but lag a bit. Caterpillar and Centipede run super slow.


So why exactly is the waterbear so fast?
Bored of using the Moore neighbourhood for everything? Introducing the Range-2 von Neumann isotropic non-totalistic rulespace!
muzik
 
Posts: 3462
Joined: January 28th, 2016, 2:47 pm
Location: Scotland

Re: Thread for basic questions

Postby dvgrn » September 6th, 2016, 2:51 pm

muzik wrote:So why exactly is the waterbear so fast?

It's much smaller, and has a lower period even than the centipede, let alone the other megaships. That's pretty much all there is to it.

None of the spaceships you mentioned take advantage of Golly's ability to speed up power-of-two spatial and temporal offsets -- and that HashLife trick only works for powers of two. However the waterbear is small enough that all sizes of hashtiles for all of its phases will fit into a reasonable amount of memory -- so the HashLife algorithm doesn't have to do any garbage collection.

(Garbage collection is when Golly throws away tiles that it saw a moment ago and maybe is about to see again, but that aren't being used right now. If the tile isn't part of the current generation of the pattern, and Golly's memory gets filled up, then it throws away whatever it has to, to save space. That's a time-consuming process, and it's what causes the every-now-and-then jitters in HashLife.)
User avatar
dvgrn
Moderator
 
Posts: 5821
Joined: May 17th, 2009, 11:00 pm
Location: Madison, WI

Re: Thread for basic questions

Postby muzik » September 6th, 2016, 3:43 pm

That said, how about lowering the caterpillar period (or at least the period of its successor)?

A p45 caterpillar is impossible unless we can efficiently make a helix of c/3 ships, which is unlikely. p90 isn't looking to be too good either, since 90 idn't a multiple of 4. So how about a p180 caterpillar?
Bored of using the Moore neighbourhood for everything? Introducing the Range-2 von Neumann isotropic non-totalistic rulespace!
muzik
 
Posts: 3462
Joined: January 28th, 2016, 2:47 pm
Location: Scotland

PreviousNext

Return to General Discussion

Who is online

Users browsing this forum: No registered users and 0 guests