Dweets awesomed by u/loktar

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.

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Current theme challenge: #Opposites

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KilledByAPixel

function u(t) {

c.width=99
g=navigator.getGamepads()[i=0]
for(a of g.axes)x.fillRect(i++*13,29,9,a*9)
for(b of g.buttons)x.fillText(i-4,6*i++,9,9*b.pressed)

Jun 25 2019 1:07 PM UTC

}// 140/140

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Gamepad #example ~ Displays axis and button values of connected gamepad

u/katkip

I awesome it because I believe it works
u/KilledByAPixel

You need to press a button on an xbox 360 style controller to start it.
u/KilledByAPixel

#gamepad

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loktar

function u(t) {

eval(unescape(escape`𩡯𬠨𢐽𜡥𜰬𢠽𜐰𞀰𛁸𛡤𬡡𭱉𫑡𩱥𚁣𛀰𛀰𛁉𛁊𛀰𛀭𜐬𢐬𢠩𛁌🐡𭀦𙡛𜁝𯁼𣀬𥰽𭀬𪐽𜀻𪐼𢐻𪐫𚰩𣁛𪑝👴🱌𦱩𧐺𤰨𥰫🐮𜐩𛁸𛡦𪑬𫁓𭁹𫁥👠𪁳𫀨𜐹𜀬𞐰𙐬𙁻𞐰𚡌𦱩𧑽𙐩𨀬𮀮𩡩𫁬𤡥𨱴𚁩𚰱𜀪𤰨𜐰𚡴𚐬𢠬𜐬𛑌𦱩𧐩𞱌𛡰𭑳𪀨𣀮𬱨𪑦𭀨𚐩`.replace(/uD./g,'')))

Jun 25 2019 4:33 AM UTC

}// 138/140

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Scrolling waves, original https://codepen.io/loktar00/pen/pJRbOd wish I could have fit color cycling in

u/donbright

kawaii

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loktar

function u(t) {

eval(unescape(escape`𘑴𙠦𮀮𩡩𫁬𤡥𨱴𚀰𛀰𛁣𛡷𪑤𭁨𯀽𜀬𜡥𜰩𞱸𛡦𪑬𫁓𭁹𫁥👒𚀰𛀹𜀬𜐹𞐩𞱦𫱲𚁁🐵𜀰𛁹🐭𠐻𮐼𠐻𮐫𚰩𩡯𬠨𥠽𘑴𙠦𣑡𭁨𛡳𬑲𭀨𠐪𠐭𮐪𮐩𛁘🐭𥠻𦀼𜀻𦀫𚰩𫠽𣑡𭁨𛡲𨑮𩁯𫐨𚐪𥠯𜐮𝐬𫠾𥠫𦀦𙠡𭀦𙡸𛡦𪑬𫁒𩑣𭀨𦀫𜠪𠐬𮐫𠐬𜐬𜐩𞰻`.replace(/uD./g,'')))

Jun 25 2019 2:24 AM UTC

}// 135/140

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#Planet thing.

u/Xen

nice
u/katkip

Awesome #compressed
u/donbright

bruh

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taupelink

remix of d/14682 by u/rodrigo.siqueira

function u(t) {

s=t%1*9;c.width=480;for(n=20*s|0+9;n--;){X=n/s;Y=99*S(n)/s;for(i=200;--i;){X=57+Y-Math.abs(Y=-X)/2;x.fillRect(242+(X+Y)*s,112+(X-Y)*s,1,2)}}

Jun 25 2019 2:12 AM UTC

}// 140/140

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Loop with zoom, in lower resolution, adding detail as it zooms in. Warning, it's CPU-intensive, also kinda creepy looking O_O

u/taupelink

67, not 57, to be more faithful to rodrigo's parameters
u/taupelink

ignore that last comment...57 is about right

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loktar

function u(t) {

for(S=10,D=750,x.scale(3,3),i=0;i<D*D;i+=S)!t&&x.fillText(~~(2*Math.random())?"╱":"╲",i%D,~~(i/D)*S);

Jun 25 2019 12:54 AM UTC

}// 101/140

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#c64 10 PRINT CHR$(205.5+RND(1)); : GOTO 10

Show more comments…
u/loktar

Always a bit longer in JS than on the Commodore.
u/loktar

If not for having to scale to make it viewable it can actually be smaller, removing scale and doing 2e3, vs 750 produces a nice result fullscreen.
u/loktar

#maze wow, some amazing implementations I'm glad I didn't check prior lol.
u/andrea270872

I learned programming with a C64! Ah, the nostalgia :)
u/loktar

@andrea270872 same here actually, although I've accumulated many more Commodores and various models since then haha
u/joeytwiddle

I just learned about that book today, through a different channel
u/joeytwiddle

C64 lovers might like this: http://www.oneliner64.com/

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KilledByAPixel

function u(t) {

with(x)beginPath(save(restore(font="9em'"))),translate(960,540),rotate(-t),moveTo(0,0),clip(arc(0,0,3e3,1.56,1.58)),fillText(u,-t*12*t,t*20)

Jun 24 2019 7:42 PM UTC

}// 140/140

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Spiral #quine #slowdraw

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u/Xen

very clever!
u/jylikangas

And creative!
u/katkip

#genius
u/KilledByAPixel

Thank you, this one came to me in a dream.
u/katkip

#slowrender
u/iverjo

#waitforit
u/KilledByAPixel

Full explanation on my blog: http://frankforce.com/?p=6232
u/magna

This is great!

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Kash

function u(t) {

c.width=1920;a=t%13
for(i=0;i<500;i++)
x.fillRect(960+i*C(10*i/a)*C(a),540+i*S(10*i/a)*C(a),10,10)

Jun 24 2019 3:32 PM UTC

}// 99/140

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My first dweet

u/Xen

nicely done, check 'about' join the discord chat ;-)

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jniemenmaa

remix of d/14738 by u/jniemenmaa

function u(t) {

for(i=600;i--;x.fillRect(420+(i*2)+400*S(i)*Z,250+i*C(i)*Z+i,a=i/2*Z,a))Z=T(i+t),x.fillStyle=`hsla(${i+t},99%,50%,.02)`

Jun 24 2019 1:35 PM UTC

}// 120/140

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u/donbright

thats quite nice actually

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New_Core

function u(t) {

for(i=500;i--;x.fillRect(960+400*S(i)*Z,540+i*C(i)*Z,a=i/2*Z,a))Z=2**T(i*8+t),x.fillStyle=`hsla(${i/2+t*5},99%,50%,.02)`

Jun 24 2019 8:36 AM UTC

}// 121/140

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u/katkip

hyperspace tunnel
u/donbright

my goodness this is rather profound
u/joeytwiddle

#tunnel #clouds

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Xen

remix of d/14716 by u/username

function u(t) {

with(x)for(k=i=2e3;i---99;beginPath(fill(arc((i**3+p)%2e3,(i*i+p)%k,k/(i/(9+S(p)*8)),0,7))))fillStyle=`hsla(${i+(p=t*i)},99%,60%,.01`

Jun 24 2019 7:14 AM UTC

}// 133/140

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rainbow clouds

u/Xen

#waitforit
u/joeytwiddle

Variations: change i*i+p to i**t+p (fine) or i^p+t (coarse)
u/joeytwiddle

On iOS, slay the grey with 65% rainbow
u/Xen

#clouds #rainbow

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