Forums for Conway's Game of Life
https://conwaylife.com/forums/
It is just a magical example that fits the apgcode. False claim.ColorfulGabrielsp138 wrote: ↑June 20th, 2021, 3:04 amYou can try this: x3p2_7 (it just won't load sample soups and comments)
............^
I have these lying around:
Code: Select all
x = 61, y = 50, rule = B3/S23
13b2o$6b3o4bobo$8bo4bo$7bo4$16b2o$16bobo$16bo$6b2o$7b2o$6bo$50bo$37b3o
9b2o$39bo9bobo$38bo3$31b3o$33bo$32bo$7b2o$3o4bobo$2bo4bo$bo4$10b2o$10b
obo$10bo2$58bo$57b2o$57bobo2$49b3o$51bo$21bo28bo$20b2o17bo$20bobo15b2o
18b3o$38bobo17bo$12b3o44bo$14bo15b3o$13bo18bo$31bo$20b2o19b3o$20bobo
18bo$20bo21bo!The easiest way to make a phi is via a glider-blinker collision. There is also a 2-glider collision that edge-shoots a phi with some junk behind it; there are many ways of suppressing that junk with a third glider, if necessary:
Code: Select all
x = 26, y = 8, rule = B3/S23
24bo$23bo$o22b3o$o20bo$o19boo$bboo16bobo$bbobo$bbo!
A boat also can serve as a one-glider seed for a phi spark.
Code: Select all
x = 5, y = 10, rule = B3/S23
3bo$2bobo$3b2o5$bo$b2o$obo!Yes! A starting point is Catagolue as a generic pattern inventory.Selena Silverstep wrote: ↑June 20th, 2021, 12:05 pmIs it possible to run apgsearch using custom seeds?
Code: Select all
x = 109, y = 12, rule = B3/S23
5b2o18b2o18b2o18b2o18b2o18b2o$5bo19bo19bo19bo19bo19bo$o4b2o18b2o12bo5b
2o18b2o11bo6b2o18b2o$o6bo10bo8bo12bo6bo12bo6bo12bo6bo12bo6bo$o18b4o17b
2o17b3o18b2o17b3o$o6bo19bo12bo6bo14bo4bo12bo6bo19bo$bo6bo19bo19bo19bo
19bo13bo5bo$8bo19bo19bo19bo19bo19bo$8bo19bo19bo19bo19bo19bo$7bo19bo19b
o19bo19bo19bo$7bo19bo19bo19bo19bo19bo$5bo19bo19bo19bo19bo19bo!Thank you for the reply! To clarify, as long as the symmetry is not recognized, the program will read RLEs from stdin instead of generating soups from SHA of a random seed, is that right? Does the symmetry have to end with 'stdin'?dvgrn wrote: ↑June 20th, 2021, 11:20 pmYes! A starting point is Catagolue as a generic pattern inventory.Selena Silverstep wrote: ↑June 20th, 2021, 12:05 pmIs it possible to run apgsearch using custom seeds?
It does seem as if there should be a quick LifeWiki tutorial written giving all the details of an example of how to run a set of RLEs through apgsearch and upload them to Catagolue. With enough encouragement I might try doing that for some sample database -- the current set of octohash collisions, let's say, just to see if any likely-looking expensive objects show up where a synthesis might be improved.
If you're familiar with piping the output of one executable to the input of another, then a thread like this one, plus a little experimentation, should be enough to get something working.
"Unofficial" symmetries are used for apgsearch hacks, mainly. They do generate soups from SHA, but the source code is modified to interpret the result differently. Of course, this serious use of these symmetries is not the only one.Selena Silverstep wrote: ↑June 21st, 2021, 12:30 amTo clarify, as long as the symmetry is not recognized, the program will read RLEs from stdin instead of generating soups from SHA of a random seed, is that right? Does the symmetry have to end with 'stdin'?
Code: Select all
x = 20, y = 29, rule = B3/S23
o$3o$3bo$2b2o3$3b2o$2bobo4bo$2bo5bobo$3bo4bobo$3o6bo$o17b2o$18bo$16bob
o$16b2o2$6b2o$5bo2bo$5bo2bo$4bo4bo$4bo4bo$5b4o$4b2o2b2o$4bo4bo$4bo4bo
3$5b4o$6b2o!It hasn't really been ignored, has it? You put a link to the original copy of it on the Spaceship Stable Circuitry, so it can be found when it's needed. No need to re-post -- though you can certainly post links to anything I've forgotten to link to in the Stable Signal Circuitry first post. I've done that now for the above copperhead-to-G converter.JP21 wrote: ↑June 21st, 2021, 1:03 pmWhy has this pattern been ignored for so long? (7 months)Is it that useless?Code: Select all
x = 20, y = 29, rule = B3/S23 o$3o$3bo$2b2o3$3b2o$2bobo4bo$2bo5bobo$3bo4bobo$3o6bo$o17b2o$18bo$16bob o$16b2o2$6b2o$5bo2bo$5bo2bo$4bo4bo$4bo4bo$5b4o$4b2o2b2o$4bo4bo$4bo4bo 3$5b4o$6b2o!
There's a replacement catalyst for when a block turns into a P-pentomino in that way? I was unaware. Thank you for informing me.JP21 wrote: ↑June 21st, 2021, 1:03 pmCode: Select all
x = 20, y = 29, rule = B3/S23 o$3o$3bo$2b2o3$3b2o$2bobo4bo$2bo5bobo$3bo4bobo$3o6bo$o17b2o$18bo$16bob o$16b2o2$6b2o$5bo2bo$5bo2bo$4bo4bo$4bo4bo$5b4o$4b2o2b2o$4bo4bo$4bo4bo 3$5b4o$6b2o!
Code: Select all
x = 21, y = 10, rule = B3/S23
3bo13bo$3bo13bo$obo11bobo$bo13bo2$b2o12b2o$b2o8b2o2bo2bo$10bobo3b2obo
$10bo8bo$9b2o8b2o!There's a new draft of a tutorial about stdin symmetry on LifeWiki now. If any regular users of apgluxe's stdin functionality want to look it over and clarify anything I said that was wrong, confusing, or downright silly, that would be a Good Thing.Selena Silverstep wrote: ↑June 21st, 2021, 12:30 amTo clarify, as long as the symmetry is not recognized, the program will read RLEs from stdin instead of generating soups from SHA of a random seed, is that right? Does the symmetry have to end with 'stdin'?
Yep, can confirm there aren't any improvements in there.dvgrn wrote: ↑June 21st, 2021, 7:17 pm(As far as the octohash database census results go, I don't think anything particularly exciting showed up; I only checked the biggest 19-bit and 20-bit still lifes that appeared, and they certainly aren't going to set any records for a synthesis of those objects. The sample results are all posted at the bottom of the tutorial if anyone wants to look through them.)
Code: Select all
x = 18, y = 18, rule = B2ci3aik4c5ry6a7e/S1e2aei3-cnry4eiyz5aeir6ei8
10bo$10bo$12bo$11b2o2$2b2o$3bo$2o3$8bo2bo4b2o$8bo2bo2bo$8bo2bo2b2o2$5b
2o$5bo$7bo$7bo!Code: Select all
x = 20, y = 5, rule = B2ci3aik4c5ry6a7e/S1e2aei3-cnry4eiyz5aeir6ei8
2o16b2o$3bo$2b2o3b3o6b2o$16bo$2o16b2o!Since the definition of a shuttle includes the idea of "back and forth", not "round and round", I'd say that this oscillator is a hassler but not a shuttle.MathAndCode wrote: ↑June 21st, 2021, 11:57 pmDoes this count as a shuttle, or is the hassled region only allowed to make 180° turns?Code: Select all
x = 18, y = 18, rule = B2ci3aik4c5ry6a7e/S1e2aei3-cnry4eiyz5aeir6ei8 10bo$10bo$12bo$11b2o2$2b2o$3bo$2o3$8bo2bo4b2o$8bo2bo2bo$8bo2bo2b2o2$5b 2o$5bo$7bo$7bo!
Guess I'd still call that a shuttle, or maybe a "shuttle with pseudo-catalysts", and the pseudo-catalysts do get hassled by the snowflake. It doesn't seem like it has to be an either/or choice.MathAndCode wrote: ↑June 21st, 2021, 11:57 pmEdit: What about this p84 oscillator? Is it a shuttle, or are the pseudo-catalysts, not the snowflake, considered to be hassled?
I agree that a shuttle has to go back and forth. I am not sure what to call a "round and round." Even the transportation metaphor doesn't yield anything better than "loop."
I would arguable that 49P88 is more of a shuttle than the p29 pre-pulsar hassler, which is commonly called a shuttle, because in 49P88, the hassled region goes both directions in the same way, which is impossible for any odd-period oscillator.pcallahan wrote: ↑June 22nd, 2021, 10:26 amThe question gave me a flashback to 49P88, which I have never thought of as a shuttle, despite taking a 180° turn. I still would not call it a shuttle. The classic shuttles are p30 and p46, which are both symmetric (ignoring catalysts) and can be thought of as flips as well as 180° turns. Maybe that is too strict as a definition, but I think it's my intuition when looking at something and deciding if it's a shuttle.
I thought the lifewiki shuttle page implies that the P29 is valid as a shuttle.MathAndCode wrote: ↑June 22nd, 2021, 10:34 amI would arguable that 49P88 is more of a shuttle than the p29 pre-pulsar hassler, which is commonly called a shuttle, because in 49P88, the hassled region goes both directions in the same way, which is impossible for any odd-period oscillator.
pcallahan wrote: ↑June 22nd, 2021, 10:26 amThe question gave me a flashback to 49P88, which I have never thought of as a shuttle, despite taking a 180° turn. I still would not call it a shuttle. The classic shuttles are p30 and p46, which are both symmetric (ignoring catalysts) and can be thought of as flips as well as 180° turns. Maybe that is too strict as a definition, but I think it's my intuition when looking at something and deciding if it's a shuttle.
The LifeWiki definition is close, but I don't think it's exactly correct, at least from my memory of how the term was initially used back in the Scientific American and Lifeline days. They key feature of shuttles (as distinguished from other pulsators) is that their active regions move a substantial distance. While it's true that all of Life's common natural shuttles (e.g. queen bee and twin bees) share two additional properties (i.e. bilateral glide symmetry, and the fact that their mechanisms must be assisted by additional non-moving components), these are not necessary properties, and there are common shuttles in other rules that don't share them, e.g. ones that operate without any outside assistance, or ones with C4 rotational symmetry, or ones with no glide symmetry, that move forwards and backwards using different mechanisms (so are capable of having odd periods).MathAndCode wrote: ↑June 22nd, 2021, 10:34 amI would arguable that 49P88 is more of a shuttle than the p29 pre-pulsar hassler, which is commonly called a shuttle, because in 49P88, the hassled region goes both directions in the same way, which is impossible for any odd-period oscillator.
Code: Select all
x = 81, y = 68, rule = B3/S2ae3aeijr4-ckqy
76boo$3o57b3o14bobo$obo57bobo14b3o$bboo58boo58$60b3o$60bobo13boo$62boo
12boo$77bo$76booboo$77b3o$78bo!