Top dweets by u/ximavus

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: #Food

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ximavus

function u(t) {

eval(unescape(escape`𮀮𬡥𬱥𭀨𨠽𙱂𨑣𪱳𬁡𨱥𙰬𭀿𫱮𪱥𮑤𫱷𫠽𪰽🡻𫀽𪰮𪱥𮐻𘑬𦰱𧑼𫀽👢🱬🐽𨠿𬰽𬰮𬱬𪑣𩐨𜀬𛐱𚐺𬰫👬𞠰𯐺𬰽𙰧𚐻𩡯𬠨𪐽𬰮𫁥𫡧𭁨𞱩𛐭𞰩𩡯𬠨𪠽𝰻𪠭𛐻𚑳𛡣𪁡𬡃𫱤𩑁𭀨𪐩𙠱🀼𪠿𮀮𩡩𫁬𤡥𨱴𚁩𚠵𜀬𪠪𝐰𛀵𜀬𝐰𚐺𜀻`.replace(/u../g,'')))

Dec 4 2025 7:03 PM UTC

}// 131/140

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Binary text editor

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ximavus

function u(t) {

t?onkeydown=k=>{l=k.keyCode;l==8?s=s.slice(0,-1):l>31&l!=91&l!=92?s+=k.key:l==13?s+=`
`:l==27?o=s:l==18?o='':0}:(s='',o='')
eval(o)
throw s

Dec 24 2025 10:57 AM UTC

}// 139/140

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Multiline programs! (esc for running the program and alt for stopping it)

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ximavus

function u(t) {

p=n=>{l=1;for(i=2;i<=n>>1;i++)n%i?0:l=0;return l}
m=~~t
b=0
p(2**m-1)?b=(2**(m-1))*(2**m-1):0
throw b+`
`+m

Dec 21 2025 10:24 AM UTC

}// 107/140

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Perfect numbers (may be laggy)

u/ximavus

Probably change the 2** with 1<<

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ximavus

function u(t) {

s=`Challenge! Make the code in the comments to 140b
(I tried)`
x.font='2cm a'
h=s.split('\n')
for(i=h.length;i--;)x.fillText(h[i],0,i*60+60)

Nov 23 2025 5:06 PM UTC

}// 140/140

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I tried to make the code to 140b. I couldn't so I figured out to give it to do it

u/ximavus

t<1?s='\n':b='Backspace' e='Enter' x.reset() onkeydown=k=>{o=k.key;l=o.length<2|o==b|o==e?k.key.replace(e,'\n'):'';l!=b?s+=l:s=s.slice(0,-1)} x.font='2cm a' h=s.split('\n') for(i=h.length;i--;)x.fillText(h[i],0,60*i)
u/ximavus

the code I posted is like a text editor. Maybe someone of you watching this can make it run! Congratulations to the one who does it (if possible)

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ximavus

function u(t) {

x.reset()
for(i=60;i--;){x.fillStyle=R(s=S(t+i/9)*99+99,s,s);x.fillRect(i*32,540,32,S(C(i*32+t*9)+t*9)*500)}

Nov 15 2025 9:16 PM UTC

}// 108/140

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Wobbly sine-cosine

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ximavus

function u(t) {

x.reset()
F=_=>(i*9-9*30+S(t)*99)
for(i=60;i--;){x.fillStyle=R(s=S(i/20)*200,s,s);x.fillRect(i*32,540,32,F());x.fillRect(i*32,540,32,-F())}

Nov 15 2025 4:32 PM UTC

}// 139/140

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is that classified as 3D? A endless tunnel with the camera turning around I guess?

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ximavus

function u(t) {

x.reset()
F=_=>(270*S(i)+C(t)*270)
for(i=60;i--;){x.fillStyle=R(s=S(i/19)*2e2,s,s);x.fillRect(i*32,540,32,F());x.fillRect(i*32,540,32,-F())}

Nov 15 2025 9:09 AM UTC

}// 140/140

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This was gonna be a ray cast demo actually

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ximavus

function u(t) {

onmousemove=m=>{x.fillRect(m.x, m.y, 5, 5)}

Sep 17 2025 3:29 PM UTC

}// 43/140

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Paint (better with fullscreen)

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ximavus

function u(t) {

t?onclick=_=>x.lineTo(_.x,_.y):c.width=568
onkeydown=_=>_.key[1]=='n'?x.reset():x.beginPath()
x.stroke()

Jan 25 2026 11:40 AM UTC

}// 104/140

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Vertice drawing

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ximavus

function u(t) {

c.width=568
t?onmousemove=e=>v.push([e.x,e.y]):v=[onkeydown=k=>v=[]]
for(a of v)x.fillRect(C(t-a[0]/99)*282+282,S(t-a[1]/99)*158+158,3,3)

Jan 9 2026 4:29 PM UTC

}// 137/140

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Animating Projection!

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