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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rodrigo.siqueira

remix of d/14045 by u/rodrigo.siqueira

function u(t) {

if(t==0)for(w=960,i=6e4;i--;){k=.5
Y=S(i)/2
H=Math.cosh(Y/k)
X=k*H*C(u=3.2*S(i/832))
Z=k*H*S(u)-1.8
x.fillRect(w+w*X/Z,w*Y/Z+500,s=4/Z/Z,s)}

May 21 2019 6:41 PM UTC

}// 140/140

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Catenoid is the surface formed by the revolution of a catenary. It is a Minimal Surface. Soap film attached to twin circular rings will take the shape of a catenoid.

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metamero

function u(t) {

with(localStorage)eval(Ü+ü+`,F(Q=E(Q),29),F(b,a,1),F(0,s,1)):(P=Q=b=m=6,a=s=15,v=r=1,onkeydown=e=>{k=e.which;d=k&16?-1:1;k&1?P+=d:Q+=d})`)

May 20 2019 4:00 PM UTC

}// 138/140

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two player #pong (Q↑↓A vs L↑↓P) dweet split experiment [3/3] - full code at codegolf.tk/a/363

u/metamero

#game instructions: scroll down and back sometimes to begin. click on canvas and play with keys Q/A for one player and L/P for the other. also works when seeing/executing all the tree parts/dweets d/14017 d/14016 and d/14015 . or just scroll my page up to the last part u/metamero
u/metamero

for the game to work on this window you first have to open/run the other parts d/14017 d/14016

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aaaaaz

function u(t) {

w=960,h=540
x.translate(w,h)
x.drawImage(c,1,1,w,h)
x.fillRect(0,0,9,w);x.rotate(3.13);x.translate(-w,-h)
x.shadowBlur=9;x.shadowColor="red"

May 19 2019 12:46 AM UTC

}// 140/140

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vinca

remix of d/14034 by u/robbyg

function u(t) {

r=a=>S(Math.random()+t)
t||(A=[...Array(99)].map(a=>[r()*2e3,r()*2e3,r()]))
A.map(a=>x.fillRect(a[0]+=C(z=a[2]+=r()-.5)*2,a[1]+=S(z)*2,3,3))

May 21 2019 1:00 PM UTC

}// 140/140

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username

remix of d/13994 by u/username

function u(t) {

with(x)for(i=7;i--;font=`9em'`)$=t+t/i+i*9,fillText(`🃏`,Math.abs(37*($*9%98-49)),111+842*($%2-1)**2),x.drawImage(c,C(t)*i,S(t)*i)

May 19 2019 12:44 PM UTC

}// 129/140

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lalala

u/username

anyone know something nice to do with 10 bytes?
u/joeytwiddle

I think I broke it a bit: with(x)for(i=7;i--;font=9em')$=t+t/i+i*9,fillText([...🃏🎴🎲🎱][i&3],($*9%98-29)**2,111+842*($%2-1)**2),x.drawImage(c,C(t)*i,S(t)*i)
u/sigveseb

#solitaire

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aaaaaz

function u(t) {

for(i=0;i<9;i++)x.fillRect(770+i*100+S(t*i*0.15)*300,880,50,200);x.drawImage(c,-9,-9);x.filter=`invert(100)`

May 18 2019 4:34 PM UTC

}// 108/140

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u/rodrigo.siqueira

#default bars

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pavel

remix of d/13902 by u/KilledByAPixel

function u(t) {

for(c.width|=S*S<2e4|C*C+9*C>55?onclick=_=>v=-20:S=v=m=0,C=64-m++%98,S+=v++,i=3;i--;)x.fillRect(591+!!i*C*25,[S+491,0,720][i],s=i?360:98,s)

May 17 2019 4:24 AM UTC

}// 139/140

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Click to flap #interactive #game

Show more comments…
u/pavel

Should give you plenty of characters for an improved compressed version
u/KilledByAPixel

amazing
u/joeytwiddle

Fantastic!
u/username

well, it is not like Flappy Bird anymore. it is just two squares at the same position all the time instead of tubes at random heights
u/username

and I feel like it is constructed in a way that makes any improvements very hard
u/KilledByAPixel

it's a demake of a demake. some really good ideas though, i've already used them to chip off a few more bites from my version
u/pavel

#physics
u/IV

needs the airwolf theme tune :)
u/pavel

#flappybird

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katkip

function u(t) {

eval(unescape(escape`𩑶𨑬𚁬𫱣𨑬𤱴𫱲𨑧𩐮𬀱𚱠𚁩𚠹𚱫𛰴𚐥𜐰𞀰𛐳𜀬𪠬𜀬𝰩𛁸𛡦𪑬𫀨𚐩𪰽𭀪𪐬𮀮𬱨𨑤𫱷𠱯𫁯𬠽𮀮𩡩𫁬𤱴𮑬𩐽𘡨𬱬𚀢𚰨𪐥𞐹𛐷𜀩𚰢𛀹𞐥𛀢𚰨𝀰𚱩𙐴𜀩𚰢𙐩𘠬𪠽𚀨𪐥𞐹𚐯𜠹𚐪𚠲𛁸𛡳𪁡𩁯𭱂𫁵𬠽𝐰𨀩`.replace(/u../g,'')))

May 19 2019 8:48 AM UTC

}// 124/140

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It will not work if you haven't seen https://www.dwitter.net/d/13989 before! Credit to u/KilledByAPixel at http://golf512.dx.am/project.php?584ab14f3

u/KilledByAPixel

Oh wow, that's cool! Feels kind of like cheating though ;)
u/Jezza

Looks awesome!
u/metamero

d/14012

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KilledByAPixel

remix of d/13937 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁼👯𫡣𫁩𨱫👟🐾𥠽𜐻𮀮𬱣𨑬𩐨𞀬𞀩𞱘🐹𞐭𥀥𜐲𞀻𪐽𥀫𚰾🠷𞱴𙠦𦀪𦀾𜐲𜑼𚁙𛑹𚐪𚠲🀴𞐿𦐭👖𛐽𛠰𜰺𥀽𦐽𥠽𜀻𩡯𬠨𪠽𝠻𪠭𛐻𮐽𜰰𚰨𪐫𚁊👪🠾𜐩𚐪𚠹𙐶𜀬𮀮𩡩𫁬𤡥𨱴𚁘𚰱𜠸𚡊𛀷𚱹𛐱𜠰𚠨𪠥𜠩𛀱𞐬𞐹𚐩𮀮𩡩𫁬𥁥𮁴𚁩𛀶𛁙𛀹𚐻`.replace(/u../g,'')))

May 19 2019 7:34 AM UTC

}// 140/140

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Dweety Dweet HD Widescreen Edition - CLICK TO FLAP!

u/KilledByAPixel

#interactive #game

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rodrigo.siqueira

function u(t) {

for(i=55;i--;)
x.fillStyle=R(K=T(i+t*2)*99,K,K*2),
x.fillRect(999+S(i/5+t)*80-i*9*(S(t)+3),720-i*35,r=50*i,r)

May 18 2019 2:23 AM UTC

}// 109/140

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Tunnel of light

u/rodrigo.siqueira

#tunnel