Push- and Pull-Ships

For discussion of other cellular automata.

Push- and Pull-Ships

This a thread for push and pull ships. Examples are below.

Definition:
A pull and push ships are spaceships. They are pattern that must results from a collision of a spaceship (X) with a constellation of still lifes/oscillators (Y). After some generations the pattern recover a state before the collision but shifted along the travel line of the spaceship X. If the resulting ship has the same direction than the spaceship X then we call it push-ship, if it has the opposite direction then pull ship.

I hope this definition is clear and precise.
Push- and pull-ships are somehow related to SMOS.

Orthogonal push-ships (+ X, Y left):
x = 15, y = 6, rule = B2ek3aei4kr5q7c/S02-n3ij4krw5r6ikobo3bo5bobo$3o9b3o4$12bo!
x = 15, y = 6, rule = B2c3ajkn4knry5ci6c7c/S01c2ak3ceknq4aijny5ceij6in2bo3bo7bo$b2o10b2o$obo9bobo3$12bo! Orthogonal pull-ship: x = 15, y = 8, rule = B2cek3acij4nr5an7e/S12ikn3iq4art5cnq6bo$3o3bo$bo10b3o$13bo3$12bo$12bo!
Diagonal push-ship:
x = 15, y = 6, rule = B2ce3ace4rwz5ci6ak/S02ace3aen4iktwy5jnb2o5bo4b2o$obo9bobo4$14bo!
Knight push-ship:
x = 16, y = 7, rule = B2ek3air4jrwy5cnq6c/S12-in3ikq4ijryz5cinr6en7e2bo4b2o$3o12bo$13b3o4$13b2o! 2718281828 Posts: 738 Joined: August 8th, 2017, 5:38 pm Re: Push- and Pull-Ships 2718281828 wrote:Push- and pull-ships are somehow related to SMOS. In particular I'd say that oscillators and still lifes are just a special kind of spaceship (in the same way that squares are just a special kind of rectangle). So a push or pull-ship is just a special kind of SMOS. It might be interesting to search for a push or pull ship that goes faster than its constituent ship. Macbi Posts: 689 Joined: March 29th, 2009, 4:58 am Re: Push- and Pull-Ships Macbi wrote: 2718281828 wrote:Push- and pull-ships are somehow related to SMOS. In particular I'd say that oscillators and still lifes are just a special kind of spaceship (in the same way that squares are just a special kind of rectangle). So a push or pull-ship is just a special kind of SMOS. I dont think these can be considered as SMOS. SMOS stands for "Spaceships Made of Other Spaceships", and their definition is (according to the wiki) "a spaceship in a cellular automaton, consisting of multiple other spaceships colliding with each other, causing a reaction to place on where all of the spaceships are regenerated separately, but with a displacement value." Since these are not made of multiple spaceships crashing into each other, rather a spaceship crashing into a non-moving object or a constellation of them, I would not consider these "SMOS". If you're the person that uploaded to Sakagolue illegally, please PM me. x = 17, y = 10, rule = B3/S23b2ob2obo5b2o$11b4obo$2bob3o2bo2b3o$bo3b2o4b2o$o2bo2bob2o3b4o$bob2obo5bo2b2o$2b2o4bobo2b3o$bo3b5ob2obobo$2bo5bob2o$4bob2o2bobobo!

(Check gen 2)

Saka

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Re: Push- and Pull-Ships

Macbi wrote:It might be interesting to search for a push or pull ship that goes faster than its constituent ship.

Here, we go, no problem at all even to go much faster:
x = 15, y = 9, rule = B2cei3any4ir5y/S02ei3ain4aikt6c7e13bo2$12bobo$bo5bo2$obo3$13bo!
x = 16, y = 11, rule = B2ci3ajr4aekrtw5ae6k7c/S1e2ai3ny4ajnz5einq6ac7e13b3o2$13bobo3$7b2o$3o2$obo2$13b2o! x = 16, y = 9, rule = B2cek4aijknt5acj6an8/S01e2ace3cen4nrwyz5aijry6kn714b2o$15bo$13bobo$8bo$b2o$2bo$obo2$14bo!

They can move with orthogonal speeds of at least c/5, the crashing ship (X) can be quite slow, e.g. c/19 in the latter example.

2718281828

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Joined: August 8th, 2017, 5:38 pm

Re: Push- and Pull-Ships

I think the definition requires some adjustments. We should talk about shifting-ships or something like this, with pull and push ships beeing a special case. As the resulting ship can go in any direction:
x = 16, y = 9, rule = B2-an3n4ajy5q/S012a3cen5c6e13bo$15bo$13bobo$7bo$o$2bo$obo2$13bo! x = 16, y = 8, rule = B2ek3aein4j5nry6c8/S01c2ace3jn4ai5acjk14bo$13b3o$7bo2$bo$3o2$13bo!
x = 16, y = 9, rule = B2k3ai4a5qry7e/S01e2ce3ijnr4eknr5anq6c14bo$13bo$13b3o$7bo$bo$o$3o2$13bo! Edit1: Also rakes exist: x = 27, y = 21, rule = B2-an3acekr4air5enq6i/S12cek3n4krtw5y6ci25bo$25bo4$25bo$24b3o$13bo10b3o$12bobo4$bo5bo$obo4bo17bo$24bobo5$13bo11bo$13bo11bo! 2718281828 Posts: 738 Joined: August 8th, 2017, 5:38 pm Re: Push- and Pull-Ships x = 10, y = 5, rule = B2-a3i8/S1e2i3-a4e82bo4bo$9bo$2obo3bo$9bo$2bo4bo! This post was brought to you by the Element of Magic. Plz correct my grammar mistakes. I'm still studying English. Working on: Nothing. Favorite gun ever: #C Favorite Gun. Found by me.x = 4, y = 6, rule = B2e3i4at/S1c23cijn4ao2bo$4o3$4o$o2bo!
Hunting

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Re: Push- and Pull-Ships

The quintessential example:
x = 3, y = 12, rule = B3/S135bo$bo7$bo$bo$obo$obo$obo!
x₁=ηx
V ⃰_η=c²√(Λη)
K=(Λu²)/2
Pₐ=1−1/(∫^∞_t₀(p(t)ˡ⁽ᵗ⁾)dt)

$$x_1=\eta x$$
$$V^*_\eta=c^2\sqrt{\Lambda\eta}$$
$$K=\frac{\Lambda u^2}2$$
$$P_a=1-\frac1{\int^\infty_{t_0}p(t)^{l(t)}dt}$$

http://conwaylife.com/wiki/A_for_all

Aidan F. Pierce

A for awesome

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Re: Push- and Pull-Ships

A for awesome wrote:The quintessential example:
x = 3, y = 12, rule = B3/S135bo$bo7$bo$bo$obo$obo$obo!

I was surprised to find that the rule has two far more common ships:
x = 15, y = 6, rule = B3/S1352bo9bo$b3o7b3o$bobo7bobo$o3bo9bo$bobo10bo$o3bo! EDIT: By over a factor of 55! That that is, is. That that is not, is not. Is that it? It is. A predecessor to my favorite oscillator of all time: x = 7, y = 5, rule = B3/S2-i3-y4i4b3o$6bo$o3b3o$2o$bo! Hdjensofjfnen Posts: 1288 Joined: March 15th, 2016, 6:41 pm Location: r cis θ Re: Push- and Pull-Ships 2718281828 wrote:I think the definition requires some adjustments. We should talk about shifting-ships or something like this, with pull and push ships beeing a special case. As the resulting ship can go in any direction: two contradicting spaceships  more different direction push ships etc. Edit1: Also rakes exist: rakes Don’t forget that bestfriends diagonal ship! I am a prolific creator of many rather pathetic googological functions My CA rules can be found here Also, the tree game Bill Watterson once wrote: "How do soldiers killing each other solve the world's problems?" Moosey Posts: 2301 Joined: January 27th, 2019, 5:54 pm Location: A house, or perhaps the OCA board. Re: Push- and Pull-Ships neckropost aletr x = 27, y = 8, rule = B34t/S235ibo13bo9bo$3o4b3o4b3o7b3o5$24b3o$14b3o!
I like making color palettes for rules

Gustone

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