2D #Starfield golfed down to 80 bytes! by KilledByAPixel

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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KilledByAPixel

function u(t) {

for(x.fillRect(0,0,i=F=2e3,F);i--;)x.clearRect((S(i)*1e9-t*i/9)%F,i*9%F,j=i%7,j)

Apr 17 2019 5:42 AM UTC

}// 80/140

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2D #Starfield golfed down to 80 bytes!

u/KilledByAPixel

Reposted to fix issue where it would slow down over time. (It still does but it takes MUCH longer.)


      u(t) is called 60 times per second.
      t: elapsed time in seconds.
      c: A 1920x1080 canvas.
      x: A 2D context for that canvas.
      S: Math.sin
      C: Math.cos
      T: Math.tan
      R: Generates rgba-strings, ex.: R(255, 255, 255, 0.5)

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