Dweets awesomed by u/lewdev

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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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TGY

remix of d/3143 by u/nystrand

function u(t) {

with(x)for(translate(t?0:m=883,t?0:540),i=m;i--;fillRect(-m,i+z,3e3,8+z/22))fillStyle=R(z=m/((i*i-t*9)%m),z*2,z*6,rotate(-T+(T=i+S(t/9))))

Aug 23 2021 10:57 PM UTC

}// 138/140

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Do you remember original spider-man opening titles?

u/magna

Very cool remix!
u/andrea270872

nice and geometric :)
u/sigveseb

sweet!

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tactical_retard

function u(t) {

t||(y=0,c.width=900)
s=""
for(i=100;i--;)s+="╱╲"[0|Math.random()*2]
frame%400==0&&(y=0,c.width|=0)
x.fillText(s,0,y)
y+=10

Aug 20 2021 2:40 PM UTC

}// 122/140

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#10PRINT

u/KilledByAPixel

#maze
u/Toby

Super. What's frame?
u/tactical_retard

frame is the current frame number, should be about equal to t*60

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Joachim

function u(t) {

eval(unescape(escape`󭽩󭍨󚌡󭌦󙬨󦜽󡬽󥜽󜌩󛍇󟜲󜌬󮬽󨼮󭽩󩍴󪌽󞜹󛍆󟍺󟽆󚼽󝜺󡬽󞜬󫽮󫝯󭝳󩝭󫽶󩜽󭌽󟭙󟝴󛭹󛼵󛍸󚝦󪝬󫍒󩝣󭌨󜬬󦜬󞜬󞜩󛍦󪝬󫍒󩝣󭌨󡬬󦜬󜬬󜬩󛍦󪝬󫍔󩝸󭌨󘬼󘬫󥜬󞌰󛍇󚽓󚌹󚭴󚜪󡼩󛍆󟬸󜌦󙭙󟭇󚽓󚌹󚭴󚜪󡼭󝜦󙭙󟍇󚽓󚌹󚭴󚜪󡼦󙬨󥜫󚼬󡬽󞜩`.replace(/u../g,'')))

Aug 19 2021 1:21 PM UTC

}// 136/140

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space shooter #game

u/Xen

love it!
u/aleamb

#interactive

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pavel

remix of d/23537 by u/KilledByAPixel

function u(t) {

for(c.width&=i=4352;Y=i--/2e3;x.fillRect(94+C(t/3)*94+i%64,80-80*Math.abs(S(t))+i/64,2*X/C(r=X*X+--Y*Y)-6*t&1^2*Y/C(r)-6&1,r<1))X=i%64/32-1

Aug 11 2021 8:39 PM UTC

}// 139/140

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Boing

u/DaSpider

That brings back memories.
u/DaSpider

#Amiga bouncing ball
u/tomxor

Nice!
u/tomxor

-1 char X=i/32%2-1

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rep_movsd

function u(t) {

eval(unescape(escape`𩡯𬠨𨰮𭱩𩁴𪁼👄🐹𞐬𥰽𝠸𛁫🐸𞱫𛐭𞰩𩡯𬠨𬀽𚀨𩀽𡁡𭁥𚀩𦱫𚰨𪐽𢀽𜐶𚑝𚐼𙰺𙰩𚡗𞱩𛐭𞰩𘣫񀁺񎃑𾒻񂃻񎐢𛡣𪁡𬡃𫱤𩑁𭀨𬀿𩀺𭀥𜐾𛠵🱗𞠱𚐦𜐼🁩𙠦𮀮𩡩𫁬𤡥𨱴𚁗𚡫𚠲𚰨𪐾𝐩𚡄𚰨𠠽𪐯𜰦𜐩𚡈𚱰𛰲𛁄𚰨𪐥𜰩𚡄𚰡𠠪𢀭𬀯𜠬𢀫𠠪𬀬𢀫𘑂𚡰𚐊`.replace(/u../g,'')))

Aug 11 2021 1:31 PM UTC

}// 140/140

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Digital seven segment clock #time #clock #lcd

u/KilledByAPixel

nice!
u/KilledByAPixel

can i use this in the next release of os13k?
u/rep_movsd

I'd be honored!
u/rep_movsd

Use my analog clock too :)
u/KilledByAPixel

nice thanks! i have an analog in the prev version but switching to digital probably for next js13k

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KilledByAPixel

function u(t) {

eval(unescape(escape`󭽩󭍨󚍸󚝦󫽲󚍫󟜶󚬨󨼮󭽩󩍴󪌽󜼰󜌩󛍦󟝟󟜾󫍩󫭥󥍯󚌹󞜫󚌴󜌭󪼯󜬲󚜪󠼨󨜽󜜮󝬭󪬪󛬴󚜬󞌰󚼳󜌪󠼨󭌩󚼴󜌪󤼨󨜩󚜻󪼭󛜻󬽴󬭯󪽥󚌩󚝦󪝬󫍒󩝣󭌨󜜷󞜹󛝫󛌰󛌮󝌬󪼩󛍪󟝫󙜹󛍦󚍢󩝧󪝮󤍡󭍨󚍳󭍲󫽫󩝓󭍹󫍥󟝒󚍶󟜵󜌫󪼯󝌬󭬪󟜨󭌫󪬫󪼯󜼵󜌩󙬱󛍶󚜩󚜬󩬨󛜭󪬩`.replace(/u../g,'')))

Aug 11 2021 12:00 AM UTC

}// 140/140

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Amiga Ball

u/KilledByAPixel

#amiga
u/aleamb

wow!!
u/KilledByAPixel

improved... with(x)for(c.width=300,i=2e3,f=_=>lineTo(99+(40-i/22)*S(a=j*.4),80+30*C(t)+40*C(a));i--;i<1800?stroke():fillRect(0,i-1800,i,.4))j=i%9,f(beginPath(strokeStyle=R(v=i/4,v*=(t+j+i/350)&1,v))),f(--j)
u/KilledByAPixel

smaller... with(x)for(c.width=300,i=2e3,f=_=>lineTo(149+(40-i/22)*S(a=j*.4),80+30*C(t)+40*C(a));i--;i<1800?stroke():fillRect(0,i-1800,i,.4))j=i%9,f(beginPath(strokeStyle=R(v=i,v*=(t+j+i/350)&1,v))),f(--j)
u/vain

AMIGA !!!

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lewdev

function u(t) {

n=t*10|0
for(i=0;i<100;i++){
x.beginPath();x.moveTo(i*50,n);n=n%2?(n*3)+1:n/2;x.lineTo((i+1)*50,n);x.stroke();}

Aug 9 2021 12:06 PM UTC

}// 111/140

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3x+1 Unsolved Math Problem https://youtu.be/094y1Z2wpJg

u/rodrigo.siqueira

Paul Erdős said about the Collatz conjecture: "Mathematics may not be ready for such problems." He also offered US$500 for its solution. https://en.wikipedia.org/wiki/Collatz_conjec…
u/New_Core

I tried to visualize something with the Collatz Conjecture a few weeks ago but I didnt come up with anything good.. I bet someone can do some nice stuff with it here.
u/lewdev

Yeah, I figured there's a way to build out visuals like the ones in the video. I just did a quick one to get started. Math is a great inspiration for dweets.
u/smtsjhr

neat! some more inspiration for visualizing Collats here: https://youtu.be/RzQE2Q7lsT4

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KilledByAPixel

function u(t) {

t?onkeydown=e=>A.includes(c=e.code)||A.push(c):(A=[],c.outerHTML='<h3 id=z>')
o='';A.sort().map(e=>o+=e+' ')
z.innerHTML=o+'<p>⌨️ '+A.length

Aug 8 2021 10:23 PM UTC

}// 140/140

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Push Every Key ⌨️ #interactive

u/lewdev

Got tricked into pressing F5.
u/KilledByAPixel

lol same thing happened to me.

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KilledByAPixel

remix of d/23497 by u/danny@hille.dk

function u(t) {

for(c.width=w=255,i=4e4;i--;)x.fillRect(a=i%w,b=i/w,((o=(3-(4-5*(e=((X=2*b-w)*X+(Y=2*a-w)*Y)/w/w)+S(t))**.5)/++e)*Y-w*S(t)&w^X*o+t*w&w)/w,1)

Aug 8 2021 1:41 PM UTC

}// 140/140

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Xor Sphere #uncompressed

Show more comments…
u/danny@hille.dk

Nice work!, I actually did try a solution with fillRect - but it totally kills my laptop, runs kinda ok on my phone though (I get around 11fps with this dweet on my laptop, 28 on my phone)
u/danny@hille.dk

btw nice trick with ++e, i haven't seen that before, I'll put it on my toolbelt right away :-)
u/KilledByAPixel

Yep, had to make some sacrifices for speed. You can do w=127 and get a pretty good fps!
u/danny@hille.dk

this is my aptempt: reduced the resolution to get at bit more performance: c.width=w=127;for(m=w*w;m--;x.fillRect(m%w,m/w,1,(Y*(o=(3-(4-5*e+S(t))**.5)/(e+1))*w+t*w&w^X*o*w&w)/w))e=(X=1-4*m/w/w)*X+(Y=-2+4*(m%w)/w)*Y
u/danny@hille.dk

with the ++e trick its only 137 bytes :-)
u/danny@hille.dk

Sorry i hadnt seen you wrote back, yep i did 127, (any pow(2)-1 will work for the xor pattern)
u/aleamb

#sphere
u/donbright

dude

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KilledByAPixel

function u(t) {

eval(unescape(escape`󩭯󬬨󪬠󫽦󘍄󨝴󩜨󨼮󭽩󩍴󪍼󟝘󟜰󚜮󬽬󪝣󩜨󜜶󛌲󝌩󚝦󫽲󚍘󚼽󜜷󜌬󪜽󝼻󪜭󛜻󙽻󖍏󗼼󝽷󖭿󟼧󛭣󪍡󬭃󫽤󩝁󭌨󪬩󙬲󚬪󪜦󙭸󛭦󪝬󫍒󩝣󭌨󦌫󚍱󟼴󜌺󪜾󝍼󪜼󜼿󜌺󞜰󚜬󬜿󪜿󝜴󜌺󝌵󜌺󪜥󜬿󝌰󞜺󪜿󝌹󞜺󝜸󞜬󬝼󪜾󜬿󞜺󞜹󛍱󟽴󙜱󚬹󞭩󟬲󟼹󞜺󞜩󚝱󟝪󟜽󙼺󙼻`.replace(/u../g,'')))

Aug 6 2021 6:36 PM UTC

}// 140/140

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Digital Clock ⏰ #time #clock #lcd

u/Be1rog

nice
u/Be1rog

how do i get code for thi
u/Be1rog

this*
u/danny@hille.dk

If you replace eval with throw, the code is thrown👍

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