Dweets awesomed by u/iverjo

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(c.width^=0,x.globalCompositeOperation='xor',a=50;--a;x.arc(960+S(G+t)*400,520+C(t+G*3)*400,a%25*70,0,7),x.beginPath(x.fill()))G=a/25|0

May 11 2017 12:16 AM UTC

}// 138/140

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u/donbright

for slower machines... for(c.width=320,x.globalCompositeOperation='xor',a=50;--a;x.arc(160+S(G+t)*99,100+C(t+G*3)*99,a%25*20,0,7),x.beginPath(x.fill()))G=a/25|0

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veubeke

function u(t) {

t?r=c.offsetWidth/1920:_=x.font='3in a',x.fillText('smudge',500,680),c.onmousemove=e=>x.drawImage(c,e.x/r,e.y/r,f=50,f,_.x/r,_.y/r,f,f,_=e)

May 10 2017 4:49 PM UTC

}// 139/140

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u/katkip

Not really
u/Jezza

#interactive

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MrM@_S

function u(t) {

onmousemove=e=>E=e.x
t?c.width=99:Y=R=X=E=!(x.F=x.fillRect)
x.F(n=E/7,30,20,3)
x.F(Y+=S(t)*.8,R+=X+=.1,2,Y<n+20&&Y+9>n&&R<32&&3+R>30?X=-3:2)

May 10 2017 12:32 PM UTC

}// 140/140

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[a ball and paddle] interactively move the mouse to keep the ball in the air

u/joeytwiddle

Yay! Pong solitaire. Nice one :)
u/donbright

lol great
u/joeytwiddle

#game
u/katkip

#interactive

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@.+-_

function u(t) {

c.width^=0;x.rotate(0.4);for(i=0;i<50;i++){x.fillStyle=R(S(i+t)*255,255*S((t/10)),128,0.7);x.fillRect(S(i*(t/10))*500, i*100-600,2e3,200)}

May 10 2017 4:11 AM UTC

}// 138/140

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u/sigveseb

Sweet colors

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joeytwiddle

remix of d/508 by u/New_Core

function u(t) {

x.beginPath();x.strokeStyle=R(0,a=255*S(7*t),a);x.ellipse(960,540,b=79+2*S(t/2),b*.7,t/2,0,7),x.stroke();x.drawImage(c,-9,-4,1938,1088)

May 9 2017 12:21 PM UTC

}// 135/140

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s/stroke/fill/g to get rid of the white circle

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New_Core

function u(t) {

for(i=84;i--;)x.fillStyle='hsl('+i*t/9+',99%,50%)',x.rotate(.5173),x.translate(150,-540),x.fillRect(-600+i,-i*11,i*18,i*20)

May 7 2017 7:25 PM UTC

}// 123/140

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lol, Dont look at it to long.. you'll go crazy! ;)

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cagr30

function u(t) {

w=2e3;x.globalAlpha=.05;for(x.fillRect(0,0,a=i=w,w);i-=4;)s=99/(-a+(i+t*99)%a),X=a*S(i*9)*s+1e3,Y=a*C(i)*s+500,x.clearRect(X,Y,s*9,s*9)

May 7 2017 6:25 PM UTC

}// 135/140

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u/Gregg+

500,x.clearRect(X,Y,s*9,s*9)w=2e3;x.globalAlpha=.05;for(x.fillRect(0,0,a=i=w,w);i-=4;)s=99/(-a+(i+t*99)%a),X=a*S(i*9)*s+1e3,Y=a*C(i)*s+

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New_Core

function u(t) {

c.width|=0;for(i=40;i--;)a=i*50,x.translate(d=960,e=540),x.rotate(S(t)/50),x.lineWidth=10,x.translate(-d,-e/1.05),x.strokeRect(d-a/2,-e,a,a)

May 7 2017 1:25 PM UTC

}// 140/140

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u/MrM@_S

move the a=i*50 into the for loop to save a byte
u/dwitter

not sure if it's a twisting pyramid or a moving hole
u/includeRubiks

so cool!!!!!!!!!

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MrM@_S

remix of d/2678 by u/jczimm

function u(t) {

for(c.width=X=256;X-=2;)for(Y=148;Y-=2;x.fillStyle=`hsl(${A=(X*C(t)&Y^(t))&(Y*C(t)+X**S(t))},${A=A*t&50+25}%,${A}%`)x.fillRect(X,Y,2,2)

May 5 2017 5:44 PM UTC

}// 135/140

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MrM@_S

remix of d/2573 by u/MrM@_S

function u(t) {

c.width=200;t||(z=X=2,s=-1);onkeyup=a=>z*=a.keyCode&15||1;x.fillText(X+"="+z+"? Score:"+s,2,9);z==X&&(X*=s++%4*~~t%4+1,z=1);z>X&&(frame=0)

May 5 2017 12:51 PM UTC

}// 138/140

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[The Math Game] Get the left side of the equation equal right side using the numbers 1-9. It is easier if you know how to multiply.

u/sigveseb

Cool game! Only problem is when the goal number's prime decomposition contains a prime number with more than one digit (e.g. 11 and up). Then it is impossible to enter the correct answer!
u/MrM@_S

"3+3+1=7" so X*=s++%4*~~t%4+1 would never have a prime composition of 11 etc. I am pretty sure that my algorithm prevents such causes.....
u/MrM@_S

wait it is "(0-3)*(0 to 3)+1"
u/MrM@_S

(0 to 3)
u/MrM@_S

that leaves a 1 through 10 possibility

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