Dwitter - javascript demos in 140 characters

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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hotdogninja76

function u(t) {

t?c.width+=0:(a=[],v=[])
for(i=0;i<9;i++){x.fillRect(400+i*100+S(t)*300,a[i],50,200)
t<7?(a[i]=400,v[i]=0):a[i]+=v[i]+=Math.random()*.5}

Jan 13 2020 1:38 PM UTC

}// 136/140

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Defallt

u/Xen

#waitforit
u/lionleaf

#default nice one
u/sigveseb

hehehe
u/katkip

Nice!

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KilledByAPixel

remix of d/17198 by u/KilledByAPixel

function u(t) {

t=t*60|0;with(x)for(i=17;i--;t|i%2?fillRect(200+i*99+t%2*50,90+t*50,90,40):clip(rect(290,0,1296,2e3)))fillStyle=R(9+i*16+S(i*t)*39)

Jan 14 2020 5:26 AM UTC

}// 131/140

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Red #Castle Wall #uncompressed

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KilledByAPixel

function u(t) {

eval(unescape(escape`𥀽𛑾𥀻𩡯𬠨𪐽𜑥𜰻𪐭𛐻𚁩𚰵𜀩𙐱𞐸🠹𞐦𥀼𜐲🰰𞡸𛡦𪑬𫁒𩑣𭀨𝀰𜀫𪐬𜠷𜐫𥀪𞐬𜐬𞐩𚑺🐨𥀥𝠾𝁼𚁩𚰨𥀥𜐲🀶𚐪𝐰𚐥𞐹🀹𚐬𩐽𥀾🠴🐽𜠦𚀨𪐫𝀵𚐯𞐹𯀰𚐥𜡼𥀾𝐹𙡩🠴𜀴𙡩🀵𞐴𛁸𛡦𪑬𫁓𭁹𫁥👠𪁳𫀨𜀠𙁻𘑥𚠡𮠪𞐹𯐥𙁻𩐿𝠺𪐯𜐹𚰲𜀪𮡽𙑠`.replace(/u../g,'')))

Jan 14 2020 5:12 AM UTC

}// 140/140

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Red #Castle

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tiencoffee

function u(t) {

c.width+=0
r=Math.random
X=t?X+(d=r()<.05)*200*(r()-.5):(v=0,500)
d?v=5:v--
x.font="9em a"
x.fillText("😠"+["🗡🗡","  ⚔  "][+(v>0)]+"😠",X,500)

Jan 13 2020 12:49 PM UTC

}// 140/140

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veubeke

function u(t) {

for(Y=19;Y--;)for(X=40;X--;)x.fillRect(48*X,16+56*(Y+(X>7&X<32)*8),!Y&X+1>>1||(Y+3&7)>5&&X>2&X<5|X>34&X<37||Y>5&X>16&X<23?0:40+(X+Y&1)*8,48)

Jan 11 2020 7:39 PM UTC

}// 140/140

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#castle

u/iverjo

Amazing!
u/katkip

Awesome!

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hotdogninja76

remix of d/17242 by u/sEkKi

function u(t) {

for(x=y=Date();y<x+1e3;)y=Date()

Jan 15 2020 7:12 PM UTC

}// 32/140

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The actual 1 FPS machine (32 bytes is probably the min)

u/pavel

Actual 1 FPS machine is FPS=1

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New_Core

function u(t) {

for(i=99;i--;)d=~~(t/1.53)%2*199,x.fillStyle=R(a=Math.random()*25+99-d/3+49*S(d?3:t*4),a,a),x.fillRect(t*60*7,400+i*7+d+~~(t*9)%2*50,7,7)

Jan 11 2020 11:15 AM UTC

}// 137/140

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#castle

u/Xen

nice
u/13thptr

amazing
u/katkip

nice!

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pavel

function u(t) {

for(let i=c.width|=0,p=355/226;i--;x[i&5?'arc':'moveTo'](960,540,2e3/z,b=p/4*((i>>3)+S(i*p)/2+4*t+z/2),b))z=2-4*t%1+(i>>7)+C(i*p)/2;x.fill()

Jan 11 2020 8:41 PM UTC

}// 140/140

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Aw this is broken in Safari

u/aleamb

#tunnel #d3

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sEkKi

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<100000000000000000000000000;i++)
x.fillRect(100+i*100+S(t)*300,300,300,300) // draw 200x200 rects

Jan 15 2020 6:23 PM UTC

}// 140/140

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The 1 FPS machine

u/sEkKi

Or the can’t play cuz the frames are timed out machine witch ever you prefer

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sEkKi

function u(t) {

c.width=500000000000000000000000000000 // clear the canvas
for(i=2;i<100;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

Jan 15 2020 6:21 PM UTC

}// 140/140

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The FPS killer