Top #amiga dweets

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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p01

function u(t) {

for(x.fillStyle=R(i=c.width|=0);i--;)X=i/11%4-2,Y=i/240-4,(X-t^Y)&1||x.fillRect(99*(S(X*.8)*C(Y*=.4)+t*2%18),960-99*(4*S(t%3.1)-S(Y)),9,9)

Mar 4 2017 9:36 PM UTC

}// 138/140

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BOING! A 138bytes tribute to the legendary Amiga demo

u/alien

mother of god...
u/joeytwiddle

#sphere #ball #amiga

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danny@hille.dk

remix of d/26313 by u/danny@hille.dk

function u(t) {

eval(unescape(escape`󨼮󭽩󩍴󪌽󭼽󜬱󞌻󩭯󬬨󫜽󜽥󝌻󫜭󛜻󥌽󤼨󦌯󩌭󭌪󜜶󚜪󠼨󦜯󩌫󭌪󞜩󚝸󛭦󪝬󫍒󩝣󭌨󪜽󫜥󭼬󪬽󫜯󭼬󥌪󚬮󜜬󜬩󛍲󟜨󦌽󪜯󭼪󝌭󜬩󚭘󚼨󦜽󪬯󭼪󝌭󜜮󜜩󚭙󛍤󟝲󟬱󟽓󚍴󚬶󙜳󛬲󛍸󦽦󟜧󩭩󫍬󤽴󮝬󩜧󧜽󤬨󚜩󛼵󛜮󝌺󠼨󬬬󮍛󩭝󟝒󚌲󜼰󛝲󚬱󜼰󛌰󛌰󛍲󚬴󚜩󛼹`.replace(/u../g,'')))

Oct 17 2022 7:19 PM UTC

}// 139/140

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#Amiga remix

u/magna

Dude!
u/andrea270872

wow... it brings me back!
u/vain

amiga !!! <3

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p01

function u(t) {

for(x.fillStyle=R(i=c.width|=0);i--;(X*2+t^Y*2)&1||x.fillRect(199*(C(X*.8)*S(Y*=.4)+t%9),960-199*(4*S(t%3.1)-C(Y)),14,14))X=i/11%4,Y=i/240

Mar 5 2017 12:34 AM UTC

}// 138/140

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u/donbright

amiga lives?
u/donbright

d'oh now i see the original
u/iverjo

#amiga

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pavel

remix of d/23537 by u/KilledByAPixel

function u(t) {

for(c.width&=i=4352;Y=i--/2e3;x.fillRect(94+C(t/3)*94+i%64,80-80*Math.abs(S(t))+i/64,2*X/C(r=X*X+--Y*Y)-6*t&1^2*Y/C(r)-6&1,r<1))X=i%64/32-1

Aug 11 2021 8:39 PM UTC

}// 139/140

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Boing

u/DaSpider

That brings back memories.
u/DaSpider

#Amiga bouncing ball
u/tomxor

Nice!
u/tomxor

-1 char X=i/32%2-1

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tomxor

remix of d/23544 by u/pavel

function u(t) {

for(a=Math.abs,c.width&=i=4352;X=1-(T+i/32)%2,Y=--i/2e3;x.fillRect(X*r+64*T,Y*r+96-64*a(S(t)),T=a(2-t%4)+1,(i^i/64)/8&1))r=64/(--Y*Y+X*X+1)

Aug 13 2021 12:57 AM UTC

}// 139/140

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Smoother #Amiga #Ball

Show more comments…
u/tomxor

..But less authentic. Remaps the pixel positions rather than texture, which gives "free" antialiasing, with spare space to correct the spin.
u/pavel

Oh yeah, nice. This is definitely a better way of doing it. The other mapping has an incorrect center that I have to waste characters to correct.
u/pavel

-2 char using S(t%3.14) to bounce and inlining the single Math.abs call
u/danny@hille.dk

What a clever trick, using modulus pi of t, to only get the positive part of the sinus curve
u/danny@hille.dk

3.2 works fine, while 3 and 3.1 looks wrong
u/danny@hille.dk

test code: c.width|=0,x.fillRect(o=860,o-S(t*4%3.2)*o,200,200)

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marc8

function u(t) {

c.width=w=360;i=0
r=_=>Math.random()*256
while(i<=w){x.fillStyle=i<w?R(r(),r(),r()):"#43A"
x.fillRect(0,i,w,i+=2)}x.fillRect(40,20,280,160)

Mar 4 2019 10:51 PM UTC

}// 139/140

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Still loading

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u/tomxor

Oh crap :D it all came flooding back, now i gota go play llamatron
u/tomxor

#retro #amiga
u/tomxor

I love this, we need more retro!
u/tomxor

I did the atari loading bee :P d/12717
u/Jezza

I love this!
u/marc8

#c64
u/UEZ

#decruncher

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KilledByAPixel

function u(t) {

eval(unescape(escape`󭽩󭍨󚍸󚝦󫽲󚍫󟜶󚬨󨼮󭽩󩍴󪌽󜼰󜌩󛍦󟝟󟜾󫍩󫭥󥍯󚌹󞜫󚌴󜌭󪼯󜬲󚜪󠼨󨜽󜜮󝬭󪬪󛬴󚜬󞌰󚼳󜌪󠼨󭌩󚼴󜌪󤼨󨜩󚜻󪼭󛜻󬽴󬭯󪽥󚌩󚝦󪝬󫍒󩝣󭌨󜜷󞜹󛝫󛌰󛌮󝌬󪼩󛍪󟝫󙜹󛍦󚍢󩝧󪝮󤍡󭍨󚍳󭍲󫽫󩝓󭍹󫍥󟝒󚍶󟜵󜌫󪼯󝌬󭬪󟜨󭌫󪬫󪼯󜼵󜌩󙬱󛍶󚜩󚜬󩬨󛜭󪬩`.replace(/u../g,'')))

Aug 11 2021 12:00 AM UTC

}// 140/140

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Amiga Ball

u/KilledByAPixel

#amiga
u/aleamb

wow!!
u/KilledByAPixel

improved... with(x)for(c.width=300,i=2e3,f=_=>lineTo(99+(40-i/22)*S(a=j*.4),80+30*C(t)+40*C(a));i--;i<1800?stroke():fillRect(0,i-1800,i,.4))j=i%9,f(beginPath(strokeStyle=R(v=i/4,v*=(t+j+i/350)&1,v))),f(--j)
u/KilledByAPixel

smaller... with(x)for(c.width=300,i=2e3,f=_=>lineTo(149+(40-i/22)*S(a=j*.4),80+30*C(t)+40*C(a));i--;i<1800?stroke():fillRect(0,i-1800,i,.4))j=i%9,f(beginPath(strokeStyle=R(v=i,v*=(t+j+i/350)&1,v))),f(--j)
u/vain

AMIGA !!!

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tomxor

remix of d/23549 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𨐽𣑡𭁨𛡡𨡳𛁣𛡳𭁹𫁥𛡢𨑣𪱧𬡯𭑮𩀽𙰣𞐹𞐧𛁣𛡷𪑤𭁨𙠽𪐽𝀳𝐲𞱘🐱𛐨𭀫𪐯𜰲𚐥𜠬𦐽𛐭𪐯𜡥𜰻𮀮𩡩𫁬𤱴𮑬𩐽𚁩𧡩🠾𝠩𙠸🰧𬡥𩀧𞠧𘱦𩡦𙰬𮀮𩡩𫁬𤡥𨱴𚀶𝀪𚁘𛱲𚱡𚀲𛑴𙐴𚐫𜐩𛀹𝠭𝠴𚠨𦐯𬠫𨐨𤰨𭀩𚐩𛁫🐵𛱲𛐲𛁫𚐩𬠽𛐭𦐪𦐫𦀪𦀫𜐻`.replace(/u../g,'')))

Aug 13 2021 9:03 PM UTC

}// 140/140

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Smooth Colour #Amiga #Ball

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u/tomxor

If someone can squeeze in a hard shadow and a purple grid we will be done.
u/danny@hille.dk

Beautiful
u/danny@hille.dk

I distinctly remember the grid to be blue... but all the youtube videos shows it to be purple... I think it's a conspiracy :-)
u/ullo

i like
u/KilledByAPixel

dweetabase updated! https://dweetabase.3d2k.com/
u/tomxor

I can't find it now but I seem to remember reading about how emulated colours of amigas look different from real amiga video output. The emulators are probably just spitting out the RGB values and letting the host OS do the gamma etc. I suspect real amiga video output must have been a bit "coloured" which causes this difference.

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danny@hille.dk

function u(t) {

eval(unescape(escape`󨼮󭽩󩍴󪌽󭼽󜬵󝜬󩌽󮌮󩽥󭍉󫝡󩽥󡍡󭍡󚌰󛍩󟜳󛍷󛍷󚜬󬼽󩌮󩍡󭍡󞽦󫽲󚍭󟝷󚭷󞽭󛜭󞽳󦽩󚼽󝍝󟝳󦽩󚼱󧜽󚍙󚬨󫼽󚌳󛜨󝌭󝜪󩜩󚬪󛬵󚜯󚌱󚽥󚜩󚭷󚽴󚭷󙬶󝍞󦌪󫼪󭼦󝬴󚜪󝌩󩜽󚍘󟜭󜬭󤼨󭌩󚼴󚭭󛽷󛽷󚜪󦌫󚍙󟜭󜬫󝌪󚍭󙝷󚜯󭼩󚭙󞽸󛭰󭝴󢝭󨝧󩝄󨝴󨜨󩌬󜌬󜌩`.replace(/u../g,'')))

Aug 7 2021 7:30 PM UTC

}// 140/140

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Amiga remix #amiga #nostalgia #sphere

u/neimad

So cool!!

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KilledByAPixel

remix of d/23535 by u/KilledByAPixel

function u(t) {

for(i=4*(c.width=450);i--;x[(t+j+i/350)&1|j>7?'moveTo':'lineTo'](225-C(t/2)*99+(64-i/14)*S(a=j*.4),99+86*C(t)**2+64*C(a)))j=i%9
x.stroke()

Aug 11 2021 2:41 AM UTC

}// 138/140

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Amiga Ball #uncompressed #amiga

u/KilledByAPixel

fixed bounce for(i=4*(c.width=450);i--;x[(t+j+i/350)&1|j>7?'moveTo':'lineTo'](225-C(t/2)*99+(64-i/14)*S(a=j*.4),179-86*S(t%3.2)+64*C(a)))j=i%9;x.stroke()
u/vain

AMIGA !!!!! :D

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