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: #ScaryMovies

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KilledByAPixel

function u(t) {

for(i=c.width|=0;i--;)for(j=3;j--;x.fillRect(i,530+200*(j?j-1?A:B:A+B),20,20))A=S(t+i/99),B=S(t-i/99),x.fillStyle=R(1e3*!j)

May 19 2023 4:12 PM UTC

}// 123/140

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Standing Wave

u/donbright

dude with Tan instead of Sin this looks really odd

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eifo1

function u(t) {

q=950+60*S(t);x.lineWidth=90;x.strokeStyle="#FFF";x.fillRect(0,0,1920,1080);x.beginPath();x.arc(q,540,200+100*S(t),0,10*Math.PI);x.stroke();

May 19 2023 10:42 PM UTC

}// 140/140

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cool circle

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rodrigo.siqueira

remix of d/27529 by u/rodrigo.siqueira

function u(t) {

for(x.fillRect(0,0,w=2e3,w),i=2e4;i--;x.fillRect(960+S(p=T(i*i)/9)/(Z=(i/T(i+t)+i*i/340)/i/i),530+C(p)/Z,3,3))x.fillStyle=R(i,i%200,0,.05)

May 16 2023 11:43 AM UTC

}// 138/140

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Golfed fire suggestion by u/deobfuscate using a single x.fillStyle instead of separate ones for the black background and colored pixels.

u/deobfuscate

Neat
u/magna

Now make it the Quake logo
u/Xen

love it!
u/donbright

legendary

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tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𭀿𪐽𜠺𮀮𩡩𫁬𤡥𨱴𚀰𛀰𛁷🐲𝀰𛁣𛡷𪑤𭁨👷𛁸𛡦𪑬𫁓𭁹𫁥🐧𘰶𝀲𨰧𚐻𪐭𛐻𮀮𩡩𫁬𚁮𩑷𘁐𨑴𪀲𡀨𨁭𜐲𜀠𝠸𪀭𞑶𛠵𨐵𘀳𘀰𘀰𜐵𘀳𭠱𜱡𜰲𘀳𜠠𜀠𜀱𛐱𜠭𝠰𭠭𛠵𨐳𞀠𜰷𘀰𘀰𜀱𜠠𝰰𭠸𫀴𘀲𝁠𚐩𚑸𛡴𬡡𫡳𩡯𬡭𚁩𚠲𛐱𛀰𛀰𛀱𛁩𚡷𛀰𚐻`.replace(/u../g,'')))

May 16 2023 9:09 PM UTC

}// 139/140

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#Quake I

u/deobfuscate

He did it.... u/magna
u/magna

YES!
u/danny@hille.dk

U ROX DUDE!

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KilledByAPixel

function u(t) {

eval(unescape(escape`󩭯󬬨󪜽󨼮󭽩󩍴󪌽󞜹󞽩󛜭󞽯󫭫󩝹󩍯󭽮󟝥󟜾󚍫󟝥󛭷󪍩󨽨󚜦󜜿󦌫󟝫󛜳󞌺󦜫󟝫󛜳󞜩󩭯󬬨󪬽󝜶󞽪󛜭󞽘󟬱󞜹󟽚󚼽󦌽󜜺󪜯󜬭󦌯󝍼󪬭󦜯󜬭󜬷󟽸󛭦󪝬󫍒󩝣󭌨󪜬󪬬󬜬󜜩󞭱󟼰󞭘󟜱󚝱󟝴󟽔󚌨󪬫󭌪󤼨󠜽󪜾󟬲󚜪󜼪󦬾󟬲󚜪󠜪󦬩󟌴󞭘󟝙󟝖󟝕󟝚󟜳`.replace(/u../g,'')))

May 17 2023 12:52 AM UTC

}// 134/140

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Frogger 🐸 Use dpad to move. Go right to next level. #game

u/tomxor

Nice, moar games!
u/KilledByAPixel

Thanks! Full screen recommended, each level gets a bit faster.
u/tomxor

Got to level 8, pretty hard throw Z-2. Only issue is that difficulty is slightly tied to OS key repeat delay and rate. But keyup is not fitting in here so I don't see a solution.

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rodrigo.siqueira

remix of d/27506 by u/rodrigo.siqueira

function u(t) {

for(x.fillRect(0,0,w=2e3,w),i=1e4;i--;x.clearRect(960+S(p=t/T(i**2))/(Z=(i/T(t+i)+i*i/380)/i/i),540+C(p)/Z,K=3*S(i+t),K))x.globalAlpha=.1

May 15 2023 8:34 PM UTC

}// 137/140

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Vortex of Energy

u/tomxor

Also Quake1 logo... for a while.
u/deobfuscate

Looks a lot like cooler as fire: x.fillStyle=R() for(x.fillRect(0,0,w=3e3,w),x.fillStyle=R(255,100),i=2e4;i--;x.fillRect(960+S(p=t/T(i**5))/(Z=(i/T(t+i)+i*i/380)/i/i),540+C(p)/Z,K=3*S(i+t),K))x.globalAlpha=.3
u/deobfuscate

(not golfed btw)
u/andrea270872

Wow!

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taupelink

remix of d/27456 by u/taupelink

function u(t) {

for(i=1e4;i--&&t<4;x.fillRect(60*X,60*Y,Y+f&1,X+f/Y&1))X=i*i*t%16+8,Y=i/t%16+1,f=(S(Y)-C(X%12*S(Y/6)))**2,f+=C(f)/(3+T(Y)),x.globalAlpha=f/9

May 17 2023 1:33 AM UTC

}// 140/140

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d/27533

u/tomxor

Interesting, feels like it's painted onto a surface with a texture, with the hard lines like groves.

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taupelink

remix of d/27487 by u/taupelink

function u(t) {

eval(unescape(escape`景爨椽ㅥ㐻椭⴦♴㰴㭸⹦楬汒散琨ㄵ⩘ⰱ㔪夬夫昪昦ㄬ堫昦㐩⥘㵩⩩⩴┷㠫㈵ⱙ㵩⨪琥㐶⬱㌬昽㠪匨⡙⼴┴ⴲ⤪匨堯㐩⤪⨲⭙ⱸ⹦楬汓瑹汥㵠桳氨⑻㤪⡘⭦⨮㐦㔩紬⑻㤰ⵦ┳⨲ぽ┬⑻ㄵ⨨夫昦㌩紥Ⱞ㈩怠`.replace(/u([^D].)/g,'$1%')))

May 15 2023 1:57 AM UTC

}// 140/140

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d/27527

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tomxor

remix of d/15502 by u/tomxor

function u(t) {

eval(unescape(escape`𫱮𪱥𮑵𬀽𩐽🡓🐰𛁯𫡫𩑹𩁯𭱮👥🐾𤰽𜰸𛑥𛡷𪁩𨱨𞱦𫱲𚁴🱣𛡷𪑤𭁨𙠽𪐽𜠳𜀳𞡓👃𙠽𠐽𠠽𜠬𠐭👓𛰴𛁂𛐽𠰻𪐭𛐻𠰽𠠼𜀿𭀺𦠼𜐿𠰭𝑥𛐶𞠮𝀩𮀮𩡩𫁬𤡥𨱴𚁘👩𙠳𜐬𦐽𪐾🠵𛁚🐡𚁁𧡘𯁂𧡙𚐭𚁙👙𛰳𚱂𛰳𚱴𚠪𜐮𝀬𥀨𦐫𦀯𜱞𦀯𜰭𦑞𦐯𝠩🀸𚐯𜠬𦠩`.replace(/u../g,'')))

May 14 2023 12:44 AM UTC

}// 140/140

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Do Fall ! #game

u/tomxor

Use left + right (focus the iframe with mouse first)... If you hit the top, you die, if you fall too far, you die, if you fall too fast you fall through things, you die. High Score: throw u=B<0|B>72?u:t|0
u/tomxor

Forgot: If you fall just right, you live :)

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taupelink

remix of d/27480 by u/taupelink

function u(t) {

for(i=1e4;i--&&t<4;x.fillRect(60*X,60*Y,Y+f&X%4,S(8*X)+9*f&1))X=i*i*t%26+3,Y=i/t%12+3,f=C(S(Y+2*Y%1-Y%2)+S(X))**2,x.fillStyle=R(l=288*f,l,l)

May 14 2023 12:19 AM UTC

}// 140/140

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d/27524

u/tomxor

Looks a bit like #cuneiform