Dweets awesomed by u/SockTaters

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: #Opposites

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SockTaters

function u(t) {

for(c.width=i=-1;++i<256;x.fillRect(99+C(t+Math.atan(Y/X))*(X*X+Y*Y)**.5,Y/9,17,9))x.fillStyle=R(X=16*(S(t)>0?i:~i)&240,Y=15|i^(C(t)<0)*240)

Sep 18 2024 9:06 PM UTC

}// 140/140

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Voxel Rendering

u/SockTaters

The math in R() ensures the farthest voxels from the viewer are drawn first regardless of rotation. If a 2**X by 2**X grid is labeled the obvious way (with the numbers 0 to 2**(2*X)-1 left-to-right, top-to-bottom) and n is the index of a given corner, then i^n maps i to an ordering that starts at n's corner and ends at the opposite corner. Rectangles of 2**X by 2**Y might also work. The math in R() is somewhat obfuscated for golfing purposes.
u/SockTaters

n=[0,3,12,15][0];for(i=0;i<16;)console.log(i++^n)// try these 4 corner indices

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rodrigo.siqueira

remix of d/32392 by u/rodrigo.siqueira

function u(t) {

for(x.reset(j=18);j--;)for(i=791;i--;x.fillRect((t+5)%29*120-740+S(.1+i+S(j/4+t*2)/3)*R,540+C(i)*R*(.4+S(i+t)/4),4,4))R=40*j+9

Sep 18 2024 3:38 PM UTC

}// 126/140

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Floating thing

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lewdev

function u(t) {

eval(unescape(escape`睩瑨⡸⥣⹷楤瑨㴹㤬䐽⡗ⱈⱃⱙⱇ㴰⤽㹻景爨椽㔻椭ⴻ牥獴潲攨晩汬剥捴⠭圯㈬ⵈ⼲⭇ⱗⱈ⤩⥳慶攨晩汬却祬攽刨䌩⤬瑲慮獬慴攨㔰ⰳ〭夫椩Ⱳ潴慴攨琩紊䐨ㄸⰳ〬㈵〬〩㭄⠵ⰱ㤬㤬㌬㤩㭄⠹ⰱ㔬ㄵ〬㌩`.replace(/u([^D].)/g,'$1%')))

Sep 18 2024 11:00 AM UTC

}// 140/140

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13attle TanKs #js13k please try my game submission! https://js13kgames.com/2024/games/13attle-ta…

u/lewdev

The tank in my game is blue or orange, but red was all I could manage in 140b! I really squeezed this one to get it to fit!
u/cantelope

fun game. good sounds, and excellent AI stuffs

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lewdev

remix of d/32421 by u/jpthinker

function u(t) {

eval(unescape(escape`挮睩摴桼㴰ഊ砮晩汬剥捴⠰ⰰⰲ攳ⰲ攳⤍੦潲⡩㴱攳㭩ⴭ㬩ഊ爽ㄵ〬堽㤶〫匨椩⩓⡴⨲⤪爬夽㔴〫䌨椩⨱㔰ⱸ⹦楬汓瑹汥㵠桳氨㔵ⰹ㤥Ⱔ筓⡩⤪匨琪㈫㈩⨳〫㌰紥怬砮晩汬剥捴⡘ⱙⰲ〬㈰⤠`.replace(/u([^D].)/g,'$1%')))

Sep 17 2024 8:40 PM UTC

}// 134/140

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💍 Spinning gold ring (with shadow)

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zadgy5534

function u(t) {

c.width|=0;
for(i=w=2e3;i--;){
  x.fillStyle=R(u=540+i-T(i/w-t*.5)*9,v=i*T(i/w)*9,u*v);
  x.fillRect(u,v,45/w*i,15*i);
}

Sep 17 2024 11:56 AM UTC

}// 120/140

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stop and go

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rodrigo.siqueira

remix of d/32421 by u/jpthinker

function u(t) {

x.reset(i=2e3)
for(x.fillRect(0,0,i,i);i--;x.fillStyle=R(412**S(i*2-1-t*8)+60))r=250,x.fillRect(960+S(i-t)*r,Y=540+C(i+S(i+t)/2)*r,20,20)

Sep 17 2024 12:16 AM UTC

}// 137/140

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Red light flow

u/jpthinker

Super cool! I’ll have to study this one. Thanks for the remix

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rodrigo.siqueira

remix of d/32410 by u/zadgy5534

function u(t) {

for(i=w=1e4;i--;x.globalAlpha=.3)x.fillStyle=R(r=w%i*T(i)/9/t/t,r*t*t/79),x.fillRect(960+C(w%i^t)*900/t,540+S(w<<i/t)*440/t,p=17*S(i*t)/t,p)

Sep 16 2024 1:37 PM UTC

}// 140/140

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red liminal space

u/magna

Make it green and it's the Matrix
u/lewdev

u/magna I gotchu fam. x.fillStyle=R(0,r=w%i*T(i)/9/t/t) for matrix

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jpthinker

function u(t) {

c.width|=0
x.fillRect(0,0,2e3,2e3)
for(i=1e3;i--;)
r=150,X=960+S(i)*S(t*2)*r,Y=540+C(i)*r,x.fillStyle=`hsl(55,99%,50%`,x.fillRect(X,Y,20,20)

Sep 16 2024 1:33 PM UTC

}// 140/140

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Spinning gold ring

u/jpthinker

I wanted to shade this, so that the half of the ring further away would be darker, but I couldn’t quite figure it out.
u/lewdev

I tried. I'm not sure if it's very good. d/32457

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rodrigo.siqueira

remix of d/32418 by u/rodrigo.siqueira

function u(t) {

for(c.width|=0,j=3e3;j--;x.lineTo(960+S(a=i/21-t)*r*2+S(i/99-t*3)*45,999+C(a)*r-i/1.05))i=(j/3-(j%1.27147)*40),r=i**(S(i/1400+2))
x.stroke()

Sep 16 2024 1:06 PM UTC

}// 140/140

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Snake Coil #spiral

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SockTaters

remix of d/18945 by u/taupelink

function u(t) {

for(X=Y=0,i=k=730;i--;x.fillRect(460+X*k|3,99+Y*k|3,4,4)){r=Math.random()*9|0;X=r/4.5+X/4-X*Y/2;Y=r%2/2+Y/4+X*X/5;x.fillStyle=R(X<1.9||i)}

Sep 15 2024 9:12 PM UTC

}// 138/140

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Santa's #Reindeer

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