Dweets awesomed by u/KilledByAPixel

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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cagr30

function u(t) {

c.width=w=270
for(i=8;i--;)h=54*(3*t+i)%w,a=i<5,b=i>6,x.fillRect(w/2+(a?0:b?-7-45*S(t):w*(i-5.5)/2),a?h:b?96:5,b?20:3,5*(a?2:(b?9:2*w)))

Sep 23 2019 6:58 PM UTC

}// 136/140

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username

remix of d/8964 by u/conorpo

function u(t) {

for(c.width|=i=9;i--;)for(j=20;j--;)x.fillStyle=`hsl(${i*99},99%,${(n=j+i*5-(t%9)*9)*8}%`,x.fillRect(400+i*100,30+j*30+3**n,100,100)

Sep 23 2019 6:50 PM UTC

}// 132/140

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integrating

u/username

#randomremix no 27

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KilledByAPixel

remix of d/15766 by u/KilledByAPixel

function u(t) {

for(I=O="";q="𠑣𹃦񚁉񪤥񐒬񲆥򁓢򉘄񤖂񓇄򙒊򡂅𼢏򋨢򪙅򱂪𲒅𣧥򑅑񰤌򁇥򃙅񚂅𥒪񊒤򰓎𢢦𛵍񫄥𠑊񹑊񱘄𸤃񔆩񒗄򫂅𫢶𚕈󂔥𱺅񓪗𸠯񣒬񻲮𦊅𣉦򉘄񤖂𳂪𳴐󛦅𱅮".charCodeAt(I/2);O+=";helo dwitr!sancmpf.uvyqbg"[q>>I++%2*5&31]);throw(O)

Sep 23 2019 5:23 PM UTC

}// 140/140

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New 4-1 compressor proof of concept! In this example the compressed code is 208 chars.

u/KilledByAPixel

#COMPRESSOR replace $ with your code... $="for(c.width|=i=9;i--;)x.fillRect(400+i*99+S(t)*300,400,50,200)";n=[...new Set([...(';'+$)])].join(o='');for(v=i=0;(q=$[i])||i%4;++i)v+=q?n.indexOf(q)<<i%2*5:0,i%2?(o+=String.fromCharCode(((i%4==3?55:54)<<10)+v),v=0):0;throw 'for(I=O="";Q="'+o+'".charCodeAt(I/2);O+="'+n+'"[Q>>I++%2*5&31]);eval(O)'
u/tomxor

This is way better than my crazy delta compressor, but it's still surprisingly difficult to stick to a 32 char set.

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KilledByAPixel

function u(t) {

t?0:c.outerHTML="»<input id=i value='Hello Dwitter!'>« <button onclick=speechSynthesis.speak(newSpeechSynthesisUtterance(i.value))>Speak"

Sep 23 2019 12:18 AM UTC

}// 138/140

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Speech Synthesis #Example ~ Change the text and click the Speak button!

u/katkip

#tts

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taupelink

remix of d/15573 by u/taupelink

function u(t) {

for(i=d=e=f=g=1e3;i--;x.fillRect(d*z,e*z,f,g))[d,e,f,g]=[(r=Math.random(z=99)*z|0)/4-(1+r%3)*f*g*C(d)/6,r%11+g%f*S(d),1.4**(r%3)+1/g,1+1/f]

Sep 22 2019 3:10 AM UTC

}// 139/140

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d/15771

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tomxor

function u(t) {

for(x=96,i=O='';u='񾈗򔼐򪄊'.charCodeAt(i/2)>>i++%2*5&31;O+=String.fromCharCode(x))x+=u-16;throw O

Sep 22 2019 2:00 AM UTC

}// 93/140

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Limited Range Delta Compression - Fit 200 chars! with extreme limitations :D

Show more comments…
u/tomxor

Each char is encoded as 5 bits (fitting 4 into each 20bit surrogate pair), representing the numeric difference between the previous and current ASCII codepoint. Since 5 bits only provides 32 values this is limited to shifting -16 to +15 codepoints each char, this makes it rather challenging to write code with since you can only reach a max of 1/3 of the useful ASCII codepoints at a time.
u/tomxor

Here's the encoder if you are looking for a very contrived adventure: f=(s,x=96,b=16,o='')=>{for(p=0,i=0;i<s.length;){x+=d=s.charCodeAt(i)-x;p|=d+b<<((i%4^2)*5);++i%4?0:p=o+=String.fromCodePoint(p+0x10000)}return o;}; f('helloooworld')
u/tomxor

... don't try this, seriously, you can't even get a for loop started
u/tomxor

#compressor
u/ximavus

this is actually a very nice idea
u/ximavus

#underrated

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KilledByAPixel

remix of d/15756 by u/KilledByAPixel

function u(t) {

t?++I%7+!u?0:u=O+=String.fromCharCode(u):I=O='';u|=(1&'􉬭󤗘􇔴󹩨􇷒򫻉򧕮񻞇򧔹񼲶󛙣򳫒󚫥񅕅񍊥𩨌𽐚񰺬󑥠򚺳򧅣񜬕񤼊𾹳󩧬󢣳𾳷򜎞𫉅򍥚񄛘󸡽󵅲򺛁𔥦󌜗񬥮󉚜򶢨󏝨򲢧'.charCodeAt(I/10)>>I%10)<<I%7;eval(O)

Sep 21 2019 7:16 PM UTC

}// 134/140

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Slow Uncomprepssor - Saved 6 more bytes! - (At 60 bits per second, give it about 10 seconds to uncompress)

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KilledByAPixel

function u(t) {

eval(unescape(escape`𨰮𬱴𮑬𩐮𨡡𨱫𩱲𫱵𫡤🐧𘰶𡁆𙰻𭀿𨠽𘑢𞡡👢👱🐱𝐲𜰻𭱩𭁨𚁸𚑢𩑧𪑮𤁡𭁨𚁦𪑬𫁓𭁹𫁥👢🰧𘰳𜰳𙰺𙰣𝰷𝰧𚐬𫁩𫡥𥁯𚁔𛑴𚠱𩐴𛁨🐱𞀰𜀩𛁡𬡣𚁔🐱𩐳𛁨𛁱𛁡𛁡𚐬𭀼𛠴𙠦𩡩𫁬𚁡𬡣𚁔𛁨𛁱𚰽𜰰𚡓𚁱𚠪𝀩𚰨𨠿𛐹𞐺𞐹𚐬𨐫🐮𜠫𛠱𚡓𚁱𚡱𚐬𨐩𚐻`.replace(/u../g,'')))

Sep 21 2019 4:34 PM UTC

}// 140/140

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Mountain ~ Inspired by https://codepen.io/kylewetton/full/oNvEXYM

u/DataMeta

#wallpaper

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mildlybean

function u(t) {

for(X=c.width+=0;X--;x.fillRect(X,540+S(X/200)*99*(t/2%Math.PI+.5)-Y/2,9,Y))x.fillStyle='#6A5',Y=S(X/800-t-3),Y=(Y**.4*150+Y*25)

Sep 21 2019 2:22 PM UTC

}// 128/140

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Say hi to Monty

u/aleamb

#organic
u/katkip

snake

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KilledByAPixel

remix of d/15747 by u/KilledByAPixel

function u(t) {

for(I=O='';q='􉬭󤗘􇔴󹩨􇷒󛻭󭅪𞻯򃆚񼵩󗡴󡑠񫆥򥗋񺺊򊅊񃐘񨰵󑥚񷃕󖆒𺪞𤧞󶜴󩩓󷧙󾖁񍍧򚎴󄺊󀐾򂪹󥅠𒚳󮇋񞚅󩉪򸫴󸢩𑐀'.charCodeAt(I/10)>>I%10;I%7+!u?0:u=O+=String.fromCharCode(u))u|=(1&q)<<I++%7;eval(O)

Sep 20 2019 10:40 PM UTC

}// 139/140

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Saved another 7 chars (I think) from the uncompressor!

u/tomxor

Oh neat, 8 i think, I thought of moving _ directly into it's reference, but combining it with the condition is way better.
u/tomxor

This has also past the threshold at which d/9207 stops reducing (even when moving _ back into a reference.)
u/KilledByAPixel

I think it might be possible if the data was packed tighter, maybe we can do better then 7 bits per char
u/tomxor

yeah i've been secretly thinking this but haven't come up with anything particularly amazing yet... you only actually need 6.75 bits if you ommit the lower 32 control chars including space and tab, but it's too messy to mix in the combinations from other chars, probably need to lose some useful chars too.
u/tomxor

I meant tab and newline not space, both of which are pretty useless for dweets.

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