Dweets awesomed by u/Jenky

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: #Opposites

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Polyducks

function u(t) {

c.width=1920
x.fillRect(0,0,1920,1080)
x.fillStyle="#AAAAFF"
for(i=0;i<20;i++){
  a=T(t+i)*10
  x.fillRect(888*i%1920,a,20,a)
}

Apr 18 2017 8:33 AM UTC

}// 127/140

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*RAIN DROPS*

u/magna

*JAW DROPS*
u/Jenky

Like melting ice :o
u/Polyducks

Aww thanks you guysss!

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sfz

remix of d/2515 by u/sfz

function u(t) {

c.width|=w=213
h=120
d=t?~~(t*60)%9?d:new Date%4:0
x.x=x.x||w
x.y=x.y||h
x.x+=d<2?2*d-1:0
x.y+=d>1?2*d-5:0
x.fillRect(x.x%w*9,x.y%h*9,99,99)

Apr 18 2017 7:43 AM UTC

}// 140/140

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Bit shoddy roomba

u/sfz

Or a cat toy!
u/Polyducks

It's alive!

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sfz

function u(t) {

s=255
z=s/3
m=~~(t*t)
a=m%2?s:z
b=m%2?z:s
for(i=s*2;i--;)x.fillStyle=R(i%2?a:b,z,i%2?b:a),x.fillRect(i%23*z-9,z*~~(i/23)-9,z,z)

Apr 18 2017 5:51 AM UTC

}// 127/140

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Seizure Warning!!! - but after about 30 seconds this should briefly look uniformly purple

u/Polyducks

I can see forever!!!
u/joeytwiddle

It was briefly purple for me but then it starting flipping on and off again. #horrible

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magna

remix of d/2420 by u/magna

function u(t) {

c.width|=0;for(j=9;j--;)for(i=100;i--;s=S(t),X=i%5+j*10+s*30,Y=i/5|0,S(Y+t*7)/4<Math.random()&&x.fillRect(400+X*10,400+Y*10,10,10));

Apr 18 2017 4:06 AM UTC

}// 132/140

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#default #noise

u/iverjo

#random

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magna

remix of d/1480 by u/magna

function u(t) {

c.width|=0
x.font='50px monospace';
(u+'')
.slice(0,t*3+S(t)*5)
.concat(t*2&1?'|':'')
.split('\n')
.forEach((s,i)=>x.fillText(s,0,++i*50))

Apr 18 2017 1:55 AM UTC

}// 138/140

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Pair programming nightmare

Show more comments…
u/joeytwiddle

that title made me Lol :D
u/sigveseb

:D
u/Jenky

That's a really clever illusion, love it
u/magna

Heh, thanks! Brought it down to 123 chars in hopes of adding occasional mistakes like skipped characters / typos etc., but couldn't immediately find a way. In case anyone wants to give it a shot: https://www.dwitter.net/d/2522
u/donbright

:o
u/Polyducks

Could you make a random function to skip odd spaces?
u/magna

It has to be a deterministic PRNG so that the places that are skipped are persistent. Otherwise, it would just look like a random flipping of characters. I thought about it, but couldn't immediately find a short solution.
u/Polyducks

That's a great point. Dwitter is such a mind twister!
u/highfestiva

Groovy baby!
u/magna

#quine
u/joeytwiddle

#funny

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MrM@_S

function u(t) {

if(!t)c.width=r=g=b=590
f=255
onmousemove=e=>{E=e.pageX;X=e.pageY}
onkeyup=e=>r+=b+=g+=2
x.fillRect(E,X,9,9)
x.fillStyle=R(r&f,g&f,b&f,.1)

Apr 17 2017 1:45 PM UTC

}// 138/140

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[paint editor] use the keyboard to change the paint and use your mouse to draw

u/magna

You can hijack a global that you don't use like S, C or T instead of E to avoid that initial "ReferenceError: E is not defined" error.
u/MrM@_S

oh thanks

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hscells

function u(t) {

w=c.width=1920;s=32;for(i=0;i<w;i+=s){for(y=0;y<c.height;y+=s){x.fillStyle=`hsl(${i+y*t},99%,70%)`;x.fillRect(i,y,s,s)}}

Apr 17 2017 5:19 AM UTC

}// 120/140

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u/sigveseb

Pretty colors!

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donbright

remix of d/2495 by u/joeytwiddle

function u(t) {

t?s=2e3/c.clientWidth:(a=b=B=A=1,k=j=2)
K=k-a
J=j-b
Q=K**2+J**2
x.fillRect(a+=A+=K/Q,b+=B+=J/Q,9,9)
onmousemove=e=>(k=e.pageX*s,j=e.pageY*s)

Apr 15 2017 10:43 PM UTC

}// 140/140

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mouse = gravitational body (explanation https://www.patreon.com/posts/simulating-in-… )

u/joeytwiddle

Nice :) For a few spare bytes, you could place the body with onclick
u/gabrielsroka

#interactive
u/donbright

#physics

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joeytwiddle

remix of d/2491 by u/New_Core

function u(t) {

t?x.fillRect(a+=9*C(d),b+=9*S(d),9,9):a=b=k=j=0
d=Math.atan2(j-b,k-a)
s=2e3/c.clientWidth
onmousemove=e=>(k=e.pageX*s,j=e.pageY*s)

Apr 15 2017 3:40 PM UTC

}// 130/140

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Woodmouth's ant chasing your mouse

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u/joeytwiddle

Since I couldn't fit the edge detection, I stop the ant when it reaches the target. So I stored the target in k,j
u/donbright

this mouse technique is excellent
u/joeytwiddle

To make him a slow turner: D=(Math.atan2(j-b,k-a)-d+3.14)%6.24-3.14;d+=.05*D
u/joeytwiddle

err I mean 6.28
u/Woodmouth

That's impressive. The slow turn was exactly what i was looking for, but that is sadly just a bit too big.
u/MrM@_S

K=3.14;d+=((Math.atan2(j-b,k-a)-d+K)%6.28-K)/20
u/iverjo

#interactive

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New_Core

remix of d/2473 by u/Woodmouth

function u(t) {

onmousemove=e=>{E=-.15+e.pageX/2e3};t?x.fillRect(a+=9*S(d),b+=9*C(d),9,9):b=a=d=500;d+=E
d=b>1080?3:b<0?0:a>1920?5:a<0?2:d

Apr 15 2017 7:09 AM UTC

}// 122/140

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just some fun added, use your mouse.

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u/donbright

i literally laughed out loud playing this
u/joeytwiddle

Brilliant :D
u/Woodmouth

Hmm, there is actually quite a bit of space left. Can anyone make it follow the mose?
u/Woodmouth

Or wait... that would require a lot actually, nvm, i doubt it will be feasible.
u/joeytwiddle

I could get it to chase the mouse but could not keep the edge detection: https://www.dwitter.net/d/2495
u/Woodmouth

The slow turning is exactly what i was thinking of. I've already asked once, but why not again? Is anyone able to compress the last 12 characters in joeytwiddle's 2495 with the slow turn addition?

dwitter.net | Jenky (2198)