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function u(t) {
} //
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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.
Theme challenge of the month: #time
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  • 🚀 S P A C E H U G G E R S 🪐

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  • Parallax Mountains ⛰️
  • u/KilledByAPixel
    These are non-repeating mountain ranges, using a similar formula used in my #JS13k game Space Huggers
  • u/rep_movsd
    #parallax #landscape
  • u/rodrigo.siqueira
    The first game where I saw this effect was in Moon Patrol, I liked it a lot, it was great and also had a great music. I think it would not be difficult to recreate Moon Patrol from this Dweet.
  • u/andrea270872
    moon patrol ate so many of my coins!! :D
  • u/tomxor
    Pretty sure I first saw the effect in StarRay (Atari ST), I think I enjoyed the music more than the gameplay, no coins though :P

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  • Landscape Generator from Space Huggers, my JS13k game

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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)

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  • 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()

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function u(t) {

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  • Show more comments…
  • u/danny@hille.dk
    with the ++e trick its only 137 bytes :-)
  • u/danny@hille.dk
    Sorry i hadnt seen you wrote back, yep i did 127, (any pow(2)-1 will work for the xor pattern)
  • u/aleamb
    #sphere
  • u/donbright
    dude

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  • Mondrian Generator v2

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  • LCD Style Number Font

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