Dweets awesomed by u/SockTaters

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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keithclark

function u(t) {

for(a=c.width|=0,G=36,J=S(t)/4;a--;'p}¶¼<¼¶}p'.charCodeAt(Y*C(t)+G-X*J&15)>>(X*C(t)+Y*J+t*G)%15&1&&x.fillRect(X*G,Y*G,G,G))X=a%53,Y=a>>6

May 3 2017 1:26 PM UTC

}// 138/140

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fullscreen rotozoom

u/joeytwiddle

#spaceinvaders #rotozoom #alien
u/yonatan

3-char shorter transposed bitmap (just posting so I won't forget it): 'ĄǼͶ߿׽ԅØ'

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MrM@_S

remix of d/2646 by u/magna

function u(t) {

x.strokeStyle=R(S(t*8)*254,0,0,.5)
for(i=300;i--;x.lineWidth=1,x.stroke())x.beginPath(),x.arc(960,540,i*9,a=t*5+i/9,a+Math.PI)

May 2 2017 12:16 AM UTC

}// 126/140

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joeytwiddle

remix of d/2600 by u/joeytwiddle

function u(t) {

t?c.width|=0:P=Z=5;for(i=36;i--;j==Z&&(X-1e3)**2<8e3?Z=9:Z?onclick=e=>Z--:P++)j=i>>2,x.fillRect(j?X=j%5*(t/19+i)*P%2e3:1e3,99*(j||Z),99,50)

Apr 27 2017 4:03 AM UTC

}// 139/140

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Crossy Box: Traffic Tourist

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u/joeytwiddle

I wanted a new seed for the next level but I only had space for P++. Fortunately we can do P++ on every iteration of the loop, until Boxy gets hit by an invisible car on row 0.
u/joeytwiddle

(Actually around 6 chars could be saved if we scale the canvas down, like MrM@_S did in his remix.)
u/MrM@_S

Replacing rectangles with 🚗s also saves bytes.
u/joeytwiddle

I can get 🚗 and 🐸 in ... 141 bytes ;)
u/joeytwiddle

Correction: The scene changes when Boxy get hit by the last car in row 1. Cars in row 0 do not re-assign X (and do not move).
u/iverjo

This is awesome :D A game in 139 bytes, and I actually enjoyed playing it!
u/joeytwiddle

Thanks iverjo! ❤️ Click 5 times to start playing

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cantelope

remix of d/2554 by u/cantelope

function u(t) {

w=960,v=340,x.fillRect(0,0,w*2,v*4)
for(i=99;i--;)for(j=59;j--;)X=i/2-25-C(t),Y=2+S(i/5)*S(j/5+t*3),x.clearRect(w+1/j*X*w,v+Y/j*w,s=99/j,s)

Apr 22 2017 6:43 PM UTC

}// 139/140

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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

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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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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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cantelope

function u(t) {

t?w=c.width=n:n=1
onmousemove=e=>n=e.pageY
for(i=6;i--;x.lineTo(w/2+(Z=1/(2+C(p=1.257*i*2+t)))*S(p)*w/2,Z*w/2-w/20),x.stroke());

Apr 9 2017 10:25 PM UTC

}// 128/140

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per donbright's suggestion... :D

u/cantelope

mouse Y position controls resolution
u/donbright

lol surely there is more we can do
u/tapgiles

Cool! Some of the lines seem thicker, and some seem fainter. Is there an overdrawing issue, perhaps?

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cantelope

function u(t) {

w=c.width=500
x.fillRect(0,0,w,w)
x.strokeStyle="red"
for(i=6;i--;x.lineTo(w/2+(Z=1/(2+C(p=1.257*i*2+t)))*S(p)*w/2,Z*w/2-w/20),x.stroke());

Apr 9 2017 9:39 PM UTC

}// 139/140

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\m/ (>.<) \m/

u/cantelope

it's fun to adjust the c.width=X value. for low values it gets very blocky, but shape position should not be affected.
u/donbright

adjust c.width with mouse: t?w=c.width=n:n=1 onmousemove=e=>n=e.pageY for(i=6;i--;x.lineTo(w/2+(Z=1/(2+C(p=1.257*i*2+t)))*S(p)*w/2,Z*w/2-w/20),x.stroke());
u/cantelope

@donbright lol excellent https://www.dwitter.net/d/2459

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