ConwayLife.com

hkoenig

Did you try a search at Catagolue?

hkoenig

Don't think of it as a bit editor. It's an object oriented editor of an array of LifeObject elements, that at some point can be converted to a bitarray that can then be used as the source for a cellular automata. Keep the data separate from the presentation.

Your first order of business should ...

hkoenig

I've noticed some glitchiness in the resizing of the LifeView in forum postings when the enclosing window is resized.

I'm running Safari on a Mac with the latest OS version and have a second screen. On the primary screen, the LifeView will resize in proportion to the enclosing window until the ...

hkoenig

The viewer now seems to be completely broken on a Mac with Safari. There were several messages over each other, and I managed to click something that stopped the the updating by generation.

hkoenig

About seven years ago I hacked up apgnano to get it to compile under XCode and run on macOS. (Here's a posting from 14 months ago https://conwaylife.com/forums/viewtopic.php?f=7&t=6809&p=200769&hilit=apgnano&sid=ed59dcce3000592f58e4a91f39177caa#p200769 , but it seems I didn't include the project ...

hkoenig

a reference frame that might too dependant on how lifelib works

exact definitions very dependant on lifelib's interface

In other words, it's not documented, but depends on the behavior of lifelib, which itself seems to be poorly documented.

That makes it a bit difficult to use in any ...

hkoenig

Where is the .sjk file format documented?

hkoenig

to me that means a stamp collection with objects in the same order as the apgcode list, and actual links in the list instead of just apgcodes.

An exercise for the student would be to create a script that would take a list of objects (by apgcode, or rle, or whatever encoding appropriate) and ...

hkoenig

I believe that can be reduced by one:

Code: Select all

#C 23_0ck0fpzc9701226
x=38, y=46
2bo$obo$b2o16$19bo6bo$17bobo6bobo$18b2o6b2o2$23bobo$24b2o10b2o$24bo6b2obo2b
o$31bob4o2$29b4obo$28bo3b2obo$28b2o5bo$35b2o4$23bo$24b2o$23b2o$15b3o$17bo$16b
o4$21b2o$22b2o$21bo!

hkoenig

It's been a limitation of the technique known from the beginning. Unless you want to do the equivalent of sitting and watching every pattern as it evolves (as I would occasionally do in the distant past), you ignore it and work with what you can.

hkoenig

There are six known ways

You should qualify such statements with modifiers like "at least". In any case, my files had eight ways, and this one makes nine.

hkoenig

I've got five ways to convert a Table-on-Table to Block-on-Table, two of which seem to work.

x=91, y=103
35bo$36bo$5bo28b3o43bo2bo$5bobo72b4o$5b2o43bo$49bo22bo7b4o$6bo2bo39b3o18b
obo7bo2bo$6b4o61b2o2$2bo3b4o32bobo28b3o$3b2obo2bo33b2o30bo$2b2o39bo30bo2$5b
o$4b2o70bo11b2o$4bobo69b2o10bobo ...

hkoenig

On the Mac version, a keyboard equivalent for "Shrink Selection" would be useful.

Also, adding a way to move a selection and its contents would be appreciated. "Nudge" via option-<cursor key>? Right now I have to cut/paste and then drag the selection. (At least I can't find any better way.)

hkoenig

My posting with that list was from almost three years ago...

My database now shows 9 17P2 oscillators without a construction:

35g41h54gzx3x3 17P2.1
m24g441lpz03 17P2.9
31a0nzwc850e 17P2.10
31a0nzw4490ac 17P2.25
k51h4gljzw3 17P2.26
35g411l4z22403 17P2.27
0m24gl3z2a882 17P2.70
3hk2060szw2251 ...

hkoenig

The xs18_3lc2kozwdb construction has a positioning problem between the 3rd and 4th steps.

The xs18_39m4pb8ozx1 construction is missing a first step, and requires 13 Gliders.

hkoenig

Here's a 32 Glider version (if my notes are correct) along with a couple more. None of them work as a direct substitute, but may provide some reduction ideas.

x=182, y=152
2b2o$bobo3bo$3bob2o$6b2o4$4b2o$2bo2bo$2b2o2$2b2o$2b2o7$6bo$4b2o$5b2o$179b
obo$179b2o$8bobo169bo$8b2o$9bo$11b3o$2b2o7bo39bo ...

hkoenig

Will the results be uploaded to a Catagolue census at some point?

No.

At this point the SQLite database with the census results so far is 1.21GB in size.

hkoenig

https://catagolue.hatsya.com/census/b3s23/synthesis-costs/xp2

Attempting to download the CSV file results in an error:

Request failed: Unexpected Error: org.eclipse.jetty.http.HttpException$RuntimeException: 500: Response body is too large: 33587200>33554432

Not surprising, but breaking it ...

hkoenig

Continuing with the census of one Glider collisions with 18 bit stable objects has turned up the first Switch Engine, which stabilizes at 997 gens. (I'm finally getting around to looking at some of the results...)

Code: Select all

x=9, y=14
5bo$3b3o$2bo$3bo$o3bo$4o2$2b2o$2bo2bo$4b2o2$6b2o$6bobo$6bo!

hkoenig

The 3-D renderings of Life histories is different and interesting, but no great breakthrough. Back in the early 1970s, when I was still using pencil and graph paper, I also tried to create a history of the R-pentomino with little wooden cubes glued together. I quickly came to the conclusion it ...

hkoenig

Someone put a rather lot of effort into this.

hkoenig

The Boats in the "1-glider reduction" will not be positioned correctly. Here's what I substituted:

Code: Select all

x=110, y=16
57bo38bo$56bobo36bobo$b2o54bo38bo$obo$2bo2$44bo64bo$45b2o60b2o$12bo31b2o62b
2o$11b2o44b2o29b2o6b2o$7bo3bobo43b2o29bobo5b2o$8b2o79bo$7b2o$53b3o42b3o$53b
o46bo$54bo44bo!

hkoenig

Your poll is missing an important option:

"Leave it alone."

hkoenig

The objection would appear to be in separating that xs17_c4oa52z6ip construction offered as an example into two stages, when in all cases, as far as I could see, require the second stage after the first completes.Can you provide an example of a construction that only uses the first stage and doesn't ...

hkoenig

vilc wrote:xs26_3lkiacz34430eio in 9G from a natural and almost clean one-glider seed

This doesn't work. Step two does not build off of the end result from step one. The Blinker needs to be offset one diagonal cell northeast.

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