Click the present for your random gift.… by Agnes

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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Agnes

function u(t) {

c.width|=0;o=t?o:0|c.addEventListener('click',()=>{o=~~c.t},0);c.t=60*t;x.font="256px A";x.fillText(String.fromCodePoint(127873+o),832,668);

Apr 10 2018 9:52 AM UTC

}// 140/140

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Click the present for your random gift. I wanted the present to move around and shake until you clicked it, but couldn't make it happen with the required function calls.

u/prplz

Golfed c.onclick=z=()=>{c.width|=0;x.font="16em A";x.fillText(String.fromCodePoint(127873+t*60|0),832,668)};t||z()
u/prplz

Ah i just realized that won't allow you to do the movement you wanted, but there are some other tricks there
u/Agnes

Thanks for the onclick tip! That kind of allows me to do the shaking.


      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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