Thread for basic non-CGOL questions

[TYCF]

How many rules have metacells similar to the 0E0P metacell?

[Haycat2009]

How many rules have metacells similar to the 0E0P metacell?

3 I guess - Conway Life, Dominoplex and Einstein.

[confocaloid]

How many rules have metacells similar to the 0E0P metacell?

3 I guess - Conway Life, Dominoplex and Einstein.

1. The 0E0P metacell works in Conway's Life.
2. The relation "is similar to" (defined on the set of all metacells) is reflexive; that is, every metacell is similar to itself.
3. The 0E0P metacell works identically in infinitely many higher-range weighted cellular automata that do not affect the way the 0E0P metacell works at all, even though other reactions may happen differently. (Only finitely many of those CA can be practically implemented in Golly, though.)
4. There are infinitely many cellular automata with a metacell similar to the 0E0P metacell.

[hotdogPi]

In the Immigration rule, is there a color-changing glider reflector? Someone claimed to have posted one, but while it turns red to blue, blue remains blue and doesn't turn red. (Or whichever two colors are used.)

This is why I distinguish "color" and "colour", by the way.

[silversmith]

In the Immigration rule, is there a color-changing glider reflector? Someone claimed to have posted one, but while it turns red to blue, blue remains blue and doesn't turn red. (Or whichever two colors are used.)

This is why I distinguish "color" and "colour", by the way.

There's this color changing reflector.

Code: Select all

x = 29, y = 32, rule = Immigration
21.2A$3.A.A15.2A$4.2A9.2A$4.A9.A.A2.4A$14.A.A.A4.A$15.A.A.A.A.A$17.A.
A.2A4.2A$16.A.A8.A$17.A7.A.A$2.A22.2A$.A.A$A2.A$2A.2A$.A4.A$A2.4A5.2A
.AB$.2A9.2A.2B$3.2A$3.A$4.A$.3A$.A4$8.2A$8.A2.A.2A$9.3A.A.A$13.A.A2.A
$11.3A.4A$10.A3.A$10.2A2.A.A$15.2A!

[hotdogPi]

Nope — blue stays blue. It needs to change in both directions.

[d/dx]

Code: Select all

x = 34, y = 25, rule = 45/2/4
4$9.CBA$11.CBA$11.A.CBA$12.BA.CBA$11.C5.CBA$17.A.CBA$18.B2.CBA$17.A.C
BA.CBA$11.C5.CBA3.CBA$12.BA.CBA$11.A.CBA$11.CBA$9.CBA!

Is this a forward or backward rake? (Gens 45/2/4)

[confocaloid]

[...] Is this a forward or backward rake? (Gens 45/2/4)

Isn't it sideways? The spaceships escape at +/- 90 degrees relative to the direction of the rake.

[d/dx]

Isn't it sideways? The spaceships escape at +/- 90 degrees relative to the direction of the rake.

I thought about that, but sideways rakes don't really exist in Life, so I thought it doesn't have its own name.

[confocaloid]

Isn't it sideways? The spaceships escape at +/- 90 degrees relative to the direction of the rake.

I thought about that, but sideways rakes don't really exist in Life, so I thought it doesn't have its own name.

??? Here are two examples of siderakes in Conway's Life: viewtopic.php?p=180678#p180678

[Haycat2009]

Why do all INT Black/white reversible rules behave identically - forming large patches that gradually disappear?

[H. H. P. M. P. Cole]

Why do all INT Black/white reversible rules behave identically - forming large patches that gradually disappear?

This one doesn't have that behaviour:

Code: Select all

x = 72, y = 61, rule = B2a4i5a6k7e8/S1c2-k3-a4-t56-a78
3obob3obobob2o2bob3o2bob4o2b2ob2ob2o2bo2bob2ob2ob4ob4ob2obo2bo$3b3o2b
obo2b2o2bo4bob2ob4o4bobo2b4obo2b2obobo2b2o2b5ob2obobo$3o2bo3b3ob2ob2o
2b2o3bob3o2b3obo4b2o2b4ob7obo2bo2bo2b2ob2o$2bo2b3obob4o2b3o2bo3b2ob6o
2b4o5bobo2bob2o2b2ob4o4b2o$3o3b3o5b4obo5b3ob4ob2obo2bobob2obobo3b2o8b
o4bob2o$2b2obob4obobobob2ob4obo3bo5bo3bob2o2bob5ob3o2bo2b6obobo$bo2bo
2b4o2b9ob6o2bo3b2o2b2o2bob3ob2o4b2obob2ob3o3b3o$b2o2b2obobobobo4b3ob2o
4bo2bob8o4b2ob6ob3ob2ob3o2bobo$obo3bo2b2ob2obo3bo2bo2bob3obo3bob2ob2o
bo2b2obobobo3b8obo2bobo$b4ob2o2bo2bo3b2ob2obo2b2obobobo4bo2b8ob2o3bo4b
o3b3o4bo$3bo2b2o2bo3b3ob2ob2ob2obob2o2b2ob8ob2o2b2ob3obo2b2o4bo2b2obo
$2bobob3ob5o2bo2bo2b2obob4obo2bo7bobob2o2bo5bobo2bo4b4o$o2bobo3bobob8o
b3obo2b2obobo5bob2ob2o5bo2b2o2bo2b7o$2b4o3bobo2b4o4b2o3b3o2b2o4b3obob
4obo3bo3bo2b5ob3ob2o$ob5ob2o2b3ob3o3b4o3bo3bob3o3bob2ob5obo6b2o10bo$2o
bob2obobob4obobobobo2b4obob2o4b3o2b2o4bob2ob3obob3ob2ob2o$o2bo2bo3bo2b
2o5bo2bobo3bo2bo5bo3b3obobobo5bobobo2bobo3b2o$2bo2bob2o2bo3b2o7bo4b2o
bobo3b3o8bo2bobobo4bobo6bo$b8o3bob2o2b7o3bobo3bobo2b3o2bob7ob4o2b3o3b
5o$4ob4o2b3ob2o3bo4bob5ob3o4b3ob2o2b3o2bobo5b2obo3bobo$2o3bo2bo2b2o5b
3o2b2ob3o9b2ob2obo2b4obo2bobobo5bobob3o$bob2obobob10o4bo3bobo2bo2bo2b
ob2o3b3obo2b2o2b3o3b2obob4o$5b3o3bo2bo2b2o2bob2obob2ob4o3b2ob2o2b2ob2o
2b3obob2o3bo2bobobo$o7b5o3bo7b7obo2bob2o3b3obob4obob2ob2o3bobob2o$4bo
b4o2b2o2b3ob4obob2ob5obob4o2bobo5bo7b2ob2o2bo2b2o$o4b3o2b2o2bob2ob4ob
o2bo3bobobo2bo2b2ob2o2b2o7b3ob3obo3b3o$o2bob2o2bo3bob2ob5o4bob7o4bo2b
2ob3o4bob3ob2o2b2ob3o2bo$o2b2ob3o2bo2b4o2bobo2b2ob2o2bo5bo2b2o2b3ob2o
3bo2bob3ob2ob2obobo$ob2obo5b2o2b2o7bo2b3obobo2bobob7ob2o3b2ob2o2bobo4b
ob3o$2bo3b2ob2o2bobob3o2b2o3bob4obo2bobo3bob2o2bo2b2obobo2bo6b2ob2o$o
2bob2o2bo3b2o5b3obobobobo2bo2bo2bo3b3ob3o7bo4b3o2bob2o$4bo2bo3b3obob2o
bo3b2o3bo3b2o4b3ob2obobo3b2obo2bob2o4bo2bo$ob2obo3bo2bob2o2b2obo2bobo
bob3obo2b5obo5bobob2o4b3obob2o$2b3o2bo3bob2o3b3o4bob2o3bobobo4b2ob2ob
o2b2ob2obo4bo2bobob3o$2o2b4ob2ob3ob5obobo2bob2o5bobo2bo2b2obob5o4bo2b
2o2bobo3bo$3bo8bo3b7o3bo2bo2b2obo2bobo3bobobobo4b2obob3ob6obo$2bo6b3o
2b2o6bo2b4ob3o2b2ob3obo6bo8b7o2bobo$3bo2bo2b6ob2o2b2o4bo2bo5b2obob2ob
2ob2o5b2o2b4o2bobobobobo$2ob2o2bo2bob2o3b4obo2b7obobo2b2obob2o3bo3bob
4o3bob3o3bo$bob2ob2o5b7ob2obo5b4o2b3obob8o2b3o2bo4bobobo2bo$bob3obob2o
b3ob2o3b2ob2obo2b2obo3b2ob4obob2o3b3o2bobo3b3o$4bo3bo2bob3o2b2o2b2obo
bob2obob2obo3bo3b5ob5obobobobo2b2o3bo$o5b3obob4o2b2o3bo3bobo3bo2b2o3b
3o2b2obo4b2o3b3obo3bo3bo$2o3bob3o2bo6bo6bob2obobobobo2bobobo2b4o2bo4b
8o2bo$bob2ob2obobobob2obob3o2bobo2bo4bob4o2bo5bobob3ob2obo3b2ob4o$4b4o
4bo3b2ob2o3bobo3bob3o2b5o3bo3b2o2b3ob2o3b3o5b2o$2obo2b5obob2obob3ob4o
b3o2bobob2o2b3o2bo5b2o3bob2ob2o4bo2bo$8b2o2bob3ob3obo2b3o2b3obo5bobob
4ob2ob2o2b3o2bobob3ob2o$b3ob4obob4ob2obo4bo2b3o2bobob3obobobo2bo4bobo
bobo4b2ob2ob2o$3ob3o2bo2b3ob3o2b2o3b4o2bobob3o2bob2obob3ob2o3b6ob2ob3o
$bobobo3b2ob9o2b2obo2b2o3b4o2b3o4b2ob4o2bo3b5obo4bo$5bo3b3obo2bob2obo
b4ob3obo2bobobob4o4b2o4b3ob2obob3o2b3o$bo3b2ob3o7b5ob3obobo5b3o3bob3o
bobo3bob2obo3bob3ob2o$o3b2obo2bobo2b2ob4o3b2ob2o4b3ob3ob2o3bob2o2b3o2b
3obo2b2ob2obo$o4bobobo5bo2b2obob2o3b3obo3b2obob2obob2o6b2ob2ob2ob6o2b
o$2bo2bo2bob2o3bo4bob2obob2o2b4ob3ob2o2bob6o3bo5b2obo2bobo$o5b2o2bo7b
ob3obo3bob2obo6bobobo4b2o2b3obo2b3o2b2obo2bo$b2ob2o5b2o2b4o2bobob6o3b
2obob5o3b2obobo2b2o6b3ob2obo$2bobob2o4bob3ob3ob4o5b7o3b5o3bob2o3b3ob3o
2bob2obo$2o2bobob7o2bo3bobo3bobo5bo5b2ob3o2b3obo3b2o5bobo2b2o$3o2b3ob
o4b2o2b4ob2o3bob9ob3o3b4o5bob6ob2o2b2o!

Code: Select all

x = 391, y = 299, rule = B2a4i5a6k7e8/S1c2-k3-a4-t56-a78:T391,299
391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o
$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o
$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o
$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o
$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o
$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o
$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o
$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o
$391o$391o$391o$391o$391o$391o$391o$159o3bobo3bobobo2b2obo3b2obo4b2o2b
o2bo2b2ob2obo2bo2bo4bo4bo2bob2ob161o$162o3b2obob2o2b2ob4obo2bo4b4obob
2o4bob2o2bobob2o2b2o5bo2bobob160o$159o3b2ob3o3bo2bo2b2o2b3obo3b2o3bob
4o2b2o4bo7bob2ob2ob2o2bo2b160o$161ob2o3bobo4b2o3b2ob3o2bo6b2o4b5obob2o
bo2b2o2bo4b4o2b162o$159o3b3o3b5o4bob5o3bo4bo2bob2obobo2bobob3o2b8ob4o
bo2b160o$161o2bobo4bobobobo2bo4bob3ob5ob3obo2b2obo5bo3b2ob2o6bobob160o
$160ob2ob2o4b2o9bo6b2ob3o2b2o2b2obo3bo2b4o2bobo2bo3b3o3b160o$160o2b2o
2bobobobob4o3bo2b4ob2obo8b4o2bo6bo3bo2bo3b2obob161o$159obob3ob2o2bo2b
ob3ob2ob2obo3bob3obo2bo2bob2o2bobobob3o8bob2obob160o$160o4bo2b2ob2ob3o
2bo2bob2o2bobobob4ob2o8bo2b3ob4ob3o3b4ob160o$162ob2o2b2ob3o3bo2bo2bo2b
obo2b2o2bo8bo2b2o2bo3bob2o2b4ob2o2bob160o$161obobo3bo5b2ob2ob2o2bobo4b
ob2ob7obobo2b2ob5obob2ob4o4b160o$159ob2obob3obobo8bo3bob2o2bobob5obo2b
o2b5ob2o2b2ob2o7b163o$161o4b3obob2o4b4o2b3o3b2o2b4o3bobo4bob3ob3ob2o5b
o3bo2b160o$159obo5bo2b2o3bo3b3o4b3ob3obo3b3obo2bo5bob6o2b10ob160o$159o
2bobo2bobobo4bobobobob2o4bobo2b4o3b2o2b4obo2bo3bobo3bo2bo2b162o$159ob
2ob2ob3ob2o2b5ob2obob3ob2ob5ob3o3bobobob5obobob2obob3o2b161o$161ob2ob
o2b2ob3o2b7ob4o2bobob3o3b8ob2obobob4obob6ob161o$160o8b3obo2b2o7b3obob
3obob2o3b2obo7bo4b2o3b3o5b161o$159o4bo4b2o3bo2b3ob4obo5bo3b4o3bo2b2o3b
2obob5o2bob3obob161o$159o2b3ob2ob2o2b5o3b2o2bo3b9o2bo2bob2o4bob2obobo
b5obobo3b160o$160obo2bobobo10b4ob3obob2ob2ob2obo2b3o3bob2o2b2o3b3o2bo
bo4b160o$164o3b3ob2ob2o2b2obo2bobo2bo4b3o2bo2b2o2bo2b2o3bobo2b3ob2obo
bob161o$159ob7o5b3ob7o7bob2obo2b3o3bobo4bobo2bo2b3obobo2b163o$163obo4b
2o2b2o3bo4bobo2bo5bobo4b2obob5ob7o2bo2b2ob2o2b160o$159ob4o3b2o2b2obo2b
o4bob2ob3obobob2ob2o2bo2b2o2b7o3bo3bob3o3b160o$159ob2obo2b2ob3obo2bo5b
4obo7b4ob2o2bo3b4obo3bo2b2o2bo3b2ob160o$159ob2o2bo3b2ob2o4b2obob2o2bo
2b2ob5ob2o2b2o3bo2b3ob2obo3bo2bo2bobob160o$159obo2bob5o2b2o2b7ob2o3bo
bob2obobo7bo2b3o2bo2b2obob4obo3b160o$161ob3o2bo2b2obobo3b2o2b3obo4bob
2obob3obo2b2ob2o2bobob2ob6o2bo2b160o$159ob2obo2b2ob3o2b5o3bobobobob2o
b2ob2ob3o3bo3b7ob4o3b2obo2b161o$163ob2ob3o3bobo2bob3o2b3ob3o2b4o3bo2b
obob3o2bob2obo2b4ob2ob162o$159obo2bob3ob2obo2b2o2bob2obobobo3bob2o5bo
b5obobo2b4o3bobo2b165o$161o3b2ob3obo2b3o3b4obo2b3obobob4o2bo2bob2o2bo
2bob4ob2obobo3b161o$159o2b2o4bo2bo3bo5bobob2obo2b5obob2ob2o2bobo5b4ob
2o2b2obob3ob160o$162ob8ob3o7b3ob2ob2o2bob2obob3obobobob4o2bobo3bo6bob
160o$161ob6o3b2o2b6ob2o4bo3b2o2bo3bob6ob8o7b2obob162o$162ob2ob2o6bo2b
2o2b4ob2ob5o2bobo2bo2bo2b5o2b2o4b2obobobobob160o$159o2bo2b2ob2obo2b3o
4bob2o7bobob2o2bobo2b3ob3obo4b3obo3b3ob162o$160obo2bo2b5o7bo2bob5o4b2o
3bobo8b2o3b2ob4obobob2ob162o$160obo3bobo2bo3bo2b3o2bo2bob2o2bob3o2bo4b
obo2b3o3b2obob3o3b166o$163ob3ob2obo3b2o2b2o2bobobo2bobo2bob3ob3o5bo5b
obobobob2o2b3ob160o$159ob5o3bobo4b2o2b3ob3obob3ob2o2b3o3b2o2bob4o2b3o
3bob3ob3ob160o$159o2b3obo3b2ob6ob6obo2bobobobob2obobob2o4b2ob4o8b2ob163o
$160obo2bo2bobobobo2bobo3b2obob2ob4obo4b2ob5obobo3bo2bob3o2bo4b161o$163o
4b4ob3o2bo2b3obob3obo3b2o5b3ob3o2b2o3bo2b3o3b5o2b160o$159o2bob2o5bobo
2bobo3bo4bo3b2obobo2b2o3b2ob5o2b3obo2bo2b4ob2ob160o$167o2b2obo3bo3bob
2o3b2o3bob5obobo4bo2bo2b2o3b2obobo3bo2b161o$160o3bo4bobo4bo2bob4ob2o3b
2obobo3bobobob2ob4obobobob4o2bo2bo2b160o$159o3bo3b2ob2o3bo3b2o2b3o4b2o
bobo3b2obo2bobo3bo2b3o6bo2bo3b162o$160obobob3o2bo9b2o2bob2o2b3o4b2o3b
4o2bo4b2ob3o5bob4ob160o$164ob3o3bob2obo2bobo4bo3bob2obobobo4b4o2b4o3b
o2bobo3b2o3b160o$160ob3o2bo3b7o5bo3bobob5o3b3obo3bobob3obo2bob3obo3bo
2b161o$159ob3o2bob2obob2o2bo4b3o2bo2b4o3bo3bo2b3obo2b2o3b2o3bob2o2bo2b
ob160o$159ob4obobob5ob2o2bobo2b3o3bob3o2bobo2bobo2b6o2bo2bo2bo6b2ob160o
$161ob2ob2obo2b3ob4obo2bobo2b2o4bo3bo2b2obo6b3ob5o2bob2obob162o$159ob
5o2b2ob7obo3bob3obo2bob6obobob4o2b2o3bob2o3b2o2bob2ob160o$160o2bo2b5o
2b2o4b2obobo6b3o2bobo5b3o2bobob2o2b6o3bo2bob161o$161obobo2b4obo3bo3bo
4b5o7b3o5b3obo2b3o3bo3b2obo2bob161o$159o2b2obobo7b2ob3obob3obob5ob5o2b
o3b2o3bob3o2b5obob2o2b161o$159o3b2o3bob4o2b2o4bo2b3obo9bo3b3o4b5obo6b
o2b2o2b162o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o
$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o
$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o
$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o
$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o
$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o
$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o
$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o$391o
$391o$391o$391o$391o$391o$391o$391o$391o$391o!

[Haycat2009]

Why do many rules have high-period traffic light oscillators?

[confocaloid]

Why do many rules have high-period traffic light oscillators?

You didn't give any examples. I assume that you mean cellular automata related to B3/S23 by a "small" change. If traffic light sequences remain common (e.g. due to forming in the same way) then the likelihood of getting a traffic light hassler in a hour of searching remains high.

However, consider cellular automata such as Just Friends (B2-a/S12), Day & Night (B3678/S34678) and Pedestrian Life (B38/S23).

[d/dx]

Can someone give me the .rule folder for StateInvestigator? I can't find it anywhere.

[b-engine]

Can someone give me the .rule folder for StateInvestigator? I can't find it anywhere.

Rule:StateInvestigator