Top #automata dweets

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

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    u(t) is called 60 times per second.
    t: Elapsed time in seconds.
    S: Shorthand for Math.sin.
    C: Shorthand for Math.cos.
    T: Shorthand for Math.tan.
    R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5)
    c: A 1920x1080 canvas.
    x: A 2D context for that canvas.

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Current theme challenge: #ScaryMovies

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tomxor

remix of d/17533 by u/tomxor

function u(t) {

u&=R=R|0?0:c.width=w=256
for(T=S,S=C,C=T,i=7e4;j=--i/w|i%w*w;u+=~S[i+5]-~S[i-6])R?x.fillRect(i%w,j%w,1,C[j]=u>33&u<59?u<46|C[j]:j&!t):C[j]=u

Jun 2 2021 3:22 PM UTC

}// 140/140

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Larger #LargerThanLife #Automata Bugs Rule v2

u/tomxor

4x the pixels 2x the speed
u/davidsover

...of Fallout 4
u/Xen

noice
u/donbright

!!!

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KilledByAPixel

function u(t) {

for(w=c.width&=i=10368;i--;S[i]=S[i]+C[i]/4||0)x.fillRect(i%w,i/w,1,C[i]=T(i*i*t)>1e5?9:C[i]*.9-(4*S[i]-S[i-1]-S[i+1]-S[i-w]-S[i+w])/5||0)

May 30 2021 9:39 PM UTC

}// 138/140

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Water Ripples 💧

u/aleamb

#water
u/KilledByAPixel

more golfed... for(w=c.width&=i=10368,R=R-1?1:w;i--;S[i]=S[i]+C[i]/4||0)x.fillRect(i%w,i/w,1,C[i]=T(i*t)>5e4?9:C[i]*.9-(2*S[i]-S[i-R]-S[i+R])/3||0)
u/tomxor

#automata (von-neuman outer-totalistic r=1)
u/KilledByAPixel

another byte saved... for(w=c.width&=i=10368,R=R-1?1:w;i--;S[i]=S[i]+v/4||0)x.fillRect(i%w,i/w,1,v=C[i]=T(i*t)>5e4?9:C[i]*.9-(2*S[i]-S[i-R]-S[i+R])/3||0)
u/vain

cool 2d water drop fx

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KilledByAPixel

remix of d/25158 by u/KilledByAPixel

function u(t) {

for(w=c.width&=i=10368;i--;x.fillRect(i%w,Y=i/w|0,1,u[i]=!!(X/35-3|Y/7-5|X&4?t&2**(u[i+w]+2*u[i-w]+4*u[i+1]+8*u[i-1]):1)))X=i%w+S(t)*25+44

Apr 2 2022 9:37 PM UTC

}// 138/140

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Defautomaton #default #automata

u/magna

AWESOME!
u/magna

#glitch as well
u/vain

very cool #glitches
u/tomxor

Very good combo idea

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KilledByAPixel

remix of d/22962 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`󬼽󚍳󟜰󚜽󟭓󦽩󚽳󧝼󯌰󒭦󫽲󚍷󟝣󛭷󪝤󭍨󙬽󪜽󜜰󜼶󞌻󪜭󛜻󮌮󩭩󫍬󤭥󨽴󚍩󙝷󛍩󟬾󝼬󜜬󜜩󚝃󦽩󧜽󭬽󪜾󜝥󝌿󤼨󪜪󭌪󝬰󚜪󞜺󠽛󪝝󚬮󞜭󚌴󚭳󚌩󛝳󚌨󭌪󭌪󪝼󜌩󙜳󛜱󚜪󜬭󬼨󛝷󚜭󬼨󭼩󚜯󝝼󯌰󛍓󦽩󧜽󬼨󚜫󭬯󝌬󮌮󩭩󫍬󤽴󮝬󩜽󤬨󨜽󭬪󭬪󝭥󜼬󨜯󞌬󨜯󜼹󚜻`.replace(/u../g,'')))

Jun 3 2021 3:53 AM UTC

}// 140/140

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Heat Waves 🔥

u/KilledByAPixel

#fire
u/andrea270872

CAs are great!
u/tomxor

Yes! #fire frei #automata 😈
u/sigveseb

classic!
u/OlegSchwann

https://fabiensanglard.net/doom_fire_psx/

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function u(t) {

eval(unescape(escape`𭁼𯀨𠰽𜐲𛁎🐹𜀬𫐽𜀩𞱦𫱲𚁮👛𪐽𣠪𣡝𞱩𛐭𞰩𮱵👩𙑎𞱶👾勺𪐯𣠩𞱦𫱲𚁓👺🐹𞱺𛐭𞱓𛐽𫑛𚁾𚁺𛰳𚐫𜠫𭐩𚰨𮠥𜰭𜐫𭠩𚡎𧑼𜀩𞰊𮀮𩡩𫁬𤱴𮑬𩐽𤠨𬰽𚁮𦱩𧐽𫐿𤰭𝐿𤰽🐶𯀰𞡭𦱩𧐺𫡥𭰠𡁡𭁥𙐲𚐪𜠵𝐬𬰬𬰩𛁸𛡦𪑬𫁒𩑣𭀨𭐪𠰬𭠪𠰬𠰬𠰩𯐻𫐽𫠻`.replace(/u../g,'')))

Jul 30 2020 8:47 PM UTC

}// 140/140

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game of life #automata

u/IV

I think someone did a compressed one already. This one is 193B: t||(C=12,N=90,m=0);for(n=[i=N*N];i--;){u=i%N;v=~~(i/N);for(S=z=9;z--;S-=m[(~(z/3)+2+u)+(z%3-1+v)*N]|0); x.fillStyle=R(s=(n[i]=m?S-5?S==6|0:m[i]:new Date%2)*255,s,s),x.fillRect(u*C,v*C,C,C)};m=n
u/IV

I have a toroidal version of 172B (166 without the wrapping) using a shorter draw, but the compressor doesnt like it: t||(C=12,N=90,m=0);for(n=[i=N*N];i--;){u=i%N;v=-~(i/N);for(S=z=9;z--;S-=m[(~(z/3)+2+u+N)%N+(z%3-2+v+N)%N*N]); x.fillText('⬛⬜'[n[i]=m?S-5?S==6|0:m[i]:new Date%2],u*C,v*C) };m=n
u/DaSpider

#conway #gameOfLife

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tomxor

function u(t) {

R?w=128:c.width=w
for(T=S,S=C,C=T,n=0,i=2e4;j=--i/w|i%w*w;n+=~S[i+5]-~S[i-6])x.fillRect(i%w,j%w,R=frame&1,C[j]=R?n>33&n<59?n<46|C[j]:j&!t:n)

Feb 9 2020 1:38 PM UTC

}// 140/140

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#LargerThanLife #Automata Bugs Rule

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u/tomxor

The Larger Than Life "Bugs" rule R5,C0,M1,S34..58,B34..45,NM. You can introduce more entropy by adding spaces to the code (to restart) which causes i&1 to be combined with existing state in the rule's dead space.
u/tomxor

This uses a sliding window to efficiently compute the sum of arbitrary radi Moore neighbourhoods (i.e box blur kernels). It naturally wraps to the next line giving it a kind of twisted toroidal space, which takes less code and is more efficient since it is only necessary to initialise the sliding window once per dimension: O(2n+2r). The FPS is half of what is displayed since every other frame is used to sum the transposed sum of x.
u/tomxor

Other sized w must be a power of 2 and i must be at least w**2+r+1 (r=neighbourhood radius) to allow the sliding window to correctly initialise, otherwise a bad sum will propagate throughout the grid usually causing everything to die.
u/KilledByAPixel

👍 Thanks for the explanation!
u/tomxor

hmm the larger than necessary i seems to be introducing artifacts... change to i=w*w+6 if you want to see the pure rule.
u/katkip

Woow! I remember it from the The Powder Toy game

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ArthurThuczsec

remix of d/4205 by u/Xen

function u(t) {

for(e=[t?k=95:d=0],c.width&=i=5e3;i--;x.fillRect(i%k*20,i/k*9,20,9-(e[i]=(n-1|d[i])==3|i%9&!d)*9))for(j of[n=1,94,k,96])n+=d[i+j]^d[i-j];d=e

Oct 10 2022 5:43 PM UTC

}// 140/140

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#waitforit

u/rodrigo.siqueira

Game of Life #automata #conway #gameOfLife

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pavel

remix of d/11116 by u/vistefan

function u(t) {

t?0:D=[0,-5,0,d=5,w=X=Y=150]
for(i=w;i--;x.fillRect(X,Y,5,5))x.fillStyle=R(b=w-x.getImageData(X+=D[d&3],Y+=D[++d&3],1,1).data[0],b,d+=b&&2)

Nov 22 2018 7:01 AM UTC

}// 139/140

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Fast Langton's ant #waitforit

u/katkip

Wow thats cool
u/pavel

#ant #automata

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joe.m

remix of d/15836 by u/joe.m

function u(t) {

t?0:q=j=4900,d=[-1,99,1,-99]
x.globalCompositeOperation='xor'
j+=u[q]?-1:1
u[q]^=1
q+=d[j%4]%9801
x.fillRect(19*(q/99|0),10*(q%99),18,8)

Sep 28 2019 2:08 PM UTC

}// 136/140

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langton's ant. Chaos becomes order after about 10k iterations, wait for it...

u/joe.m

#emergent #automata
u/KilledByAPixel

Welcome to the #ant club!
u/Xen

nice!

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solendil

function u(t) {

eval(unescape(escape`𮀮𩁲𨑷𢑭𨑧𩐨𨰬𝐬𜀩𒡦👦𬡡𫑥𒡲🐲𝰳𚱦𛰴𜀰𯀰𒡩𩠨𩠥𜠩𩡯𬠨𪐽𜐲𜀬𦱓𛁃𧐽𦱃𛁓𧐻𪐭𛐻𮀮𩡩𫁬𤱴𮑬𩐽𤠨𚁃𦱩𧐽𥀨𭀪𪐩🡩𯁼𬠮𭁯𤱴𬡩𫡧𚀲𚐮𬱰𫁩𭁠𨁛𞀭𚁓𦱩𛐱𧐪𝁼𤱛𪑝𚠲𯁓𦱩𚰱𧐩𧐩🀼𞀩𚑸𛡦𪑬𫁒𩑣𭀨𜀬𪐪𞐬𞐬𞐩𒡴𪁲𫱷𘁲𛐲𝐶`.replace(/uD./g,'')))

Nov 6 2020 10:46 AM UTC

}// 139/140

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Elementary Cellular Automaton with rule number. Wait for rules 18 or 22. Details at https://en.wikipedia.org/wiki/Elementary_cel…

u/tomxor

#automata
u/rodrigo.siqueira

Stephen Wolfram (creator of WolframAlpha and Mathematica) describes a deeper theory behind those Cellular Automata in his book A New Kind of Science. I invite you to listen to the interview about Cellular automata and its relation with Artificial General Intelligence - Stephen Wolfram and Lex Fridman (MIT AI teacher): https://www.youtube.com/watch?v=ez773teNFYA

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