Monospace: A JavaScript demo in 1021 bytes, winner of the demo competition

In these cases, you can also refresh and rapid click, it gets registered as a user gesture and the audio is allowed to start. Maybe try two-three times.

Chrome seems to be doing some things right and Firefox is just adrift...

It's quite concerning that websites are able to do this. While it is the browsers fault to support all that javascript crap I think this is also a bug in Android.

It's clearly optimized for that target, and it's getting a much higher FPS in Chrome than Firefox.

> Therefore you need to use a Chromium or Webkit browser to enjoy MONOSPACE live.

    // c is a canvas created outside
    d = [ // 2 times audio frequencies used, I think
      2280,
      1280,
      1520,
      c.width = 1920,
      // d[4] is not used, not sure why this stmt was stuffed into d
      // required to hide the PNG bootstrap; the bare minimum would be `0'`, probably this compresses better though?
      document.body.style.font = "0px MONOSPACE"
    ],
    g = new AudioContext,
    o = g.createScriptProcessor(4096,
                                // clears the margin and initializes vars
                                // (t: time in seconds, n: last t when speak occurred)
                                document.body.style.margin = t = n = 0,
                                1),
    o.connect(g.destination),
    o.onaudioprocess = o => { // periodically called to fill the audio buffer, used in place of setInterval
      o = o.outputBuffer.getChannelData(
        e = Math.sin(
          t / 16 % 1, // this is the only arg to sin, others are for shoving exprs into a single stmt
          m = Math.sin(Math.min(1, y = t / 128) * Math.PI) ** .5 + .1,
          c.height = 1080, // setting canvas.width/height clears the canvas
          b.shadowOffsetY = 32420,
          // results in `radial-gradient(#222,black` or so, reinterpreting decimal number as hex, the last `)` is not required
          c.style.background = "radial-gradient(#" + [222, 222, 222, 222, 155, 155, 102, 102][t / 16 & 7] + ",black",
          b.font = "920 32px MONOSPACE",
          // each function determines the dot size for 16 seconds, also sometimes used as a display text
          f = [
            (x, y, t) => x / y * 2 - t,
            (x, y, t) => (x ** 2 + y ** 2) ** .5 - t,
            (x, y, t) => x / 4 ^ y / 4 - t,
            (x, y, t) => y % x - t
          ][t / 16 & 3],
          // determines a string to print and speaks it every 16 second
          // the inner [...][t/16|0] can return undefined, which gets coerced to an empty string by `""+[...]`
          u = "" + [[, f, f, " CAN YOU HEAR ME", f, f, , "MONOSPACE", "THE END"][t / 16 | 0]],
          t > n && speechSynthesis.speak(new SpeechSynthesisUtterance(u, n += 16)))
      );
      for (i = 0; 4096 > 4 * i; i++) // for each dot; `4096>4*i` probably compresses better than `1024>i`
        // calculate the dot size and mix with the radius in the previous frame for easing
        // f and g are objects (function and AudioContext), so can be abused as a generic store
        g[i] = r = (f(x = 16 - i % 32, a = 16 - (i / 32 | 0), t) / 2 & 1) + (g[i] || 0) / 2,
        x += o[0] / 4 + 4 * (1 - m ** .3) * Math.sin(i + t + 8),
        a += o[64] / 4 + 4 * (1 - m ** .3) * Math.sin(i + t),
        h = x * Math.sin(y * 2 + 8) + a * Math.sin(y * 2),
        p = 4096 / (m * 32 + 4 * h * Math.sin(e) + t % 16),
        b.beginPath(f[i] = r / p),
        b.arc(h * Math.sin(e + 8) * p + 1280,
              x * Math.sin(y * 2) * p - a * Math.sin(y * 2 + 8) * p - 31920,
              p > 0 && p / (2 + 32 - r * 16),
              0,
              8), // anything larger than `2*Math.PI` will draw a full circle
        b.shadowBlur = o[0] ** 2 * 32 + 32 - m * 32 + 4 + h * h / 2,
        // `[a,b,c]` coerces into a string `a,b,c`
        b.shadowColor = "hsl(" + [f(x, y, t) & 2 ? t - a * 8 : 180, (t & 64) * m + "%", (t & 64) * m + "%"],
        b.fill();
      b.shadowBlur = o[0] ** 2 * 32,
      b.shadowColor = "#fee";
      for (i = 0; 4096 > i; i++) // generate each sample, also prints the glitched text
        o[i] = o[i] / 2 + (
          (
            Math.sin(t * d[t / [4, 4, 4, 4, 1/4, 1/4, 16, 4][t / 16 & 7] & 3] * Math.PI) * 8 +
            (t * d[t / 8 & 3] / 2 & 6) + t * d[t / 16 & 3] / 4 % 6
          ) / 64 + f[i / 4 | 0] // f[0..1023] is the visual data, reused as a noise
        ) * m,
        // prints at most 64 characters of u;
        // 0th and 64th samples (o[0] & o[64]) of the prev/current buffer act as x/y jitter,
        // first 64 samples also displaces the char offset for the glitched text effect
        64 > i & t % 16 * 6 > i &&
          b.fillText([u[i + (o[i] * 2 & 1)]], // again, [undefined] coerces into an empty string
                     i % 9 * 32 + o[0] * 16 + 180,
                     (i / 9 | 0) * 64 + o[64] * 16 - t - 31920),
        t += 1 / g.sampleRate // so t increments by 1 per second
    }

> Do you work directly in the minified code, or do you create the demo in normal code first then look for ways to minimize it?

Also, in my experience you end up structuring everything so that it can be easily minifiable (by hand or using something like terser-online [2]). This doesn't necessarily mean that the code is unreadable (variables can be renamed, statements can be converted to comma expressions and so on), but the resulting code would be very unorthodox. See the source code of my JS1024 entry for example.

[1] https://www.js1024.fun/demos/2020#46

[2] https://xem.github.io/terser-online/

I'm not dismissing the demo, mind. It's a great feat of engineering and its main achievement, that is creative, surely thrives from a technical esthetic.

Using system libraries has to be put into perspective, for sure. The common wisdom (in sizecoding at least) is that creativity thrives from constraints. Necessarily then, one has to be aware of the constraints.

One might say having to write in .js is extreme masochism, so the criticizm about .dlls is just one side of the equation. Browser bugs and all that. no, thanks.

Not to mention, it's a Firefox bug, so probably should be changed to "Firefox bug demo".

I fucking hate how snarky sometimes HN can be.

It works in Chromium browsers (Chrome, Edge) and Webkit browsers (Safari). Saying it's a Chrome demo would not be accurate.

Everyone experiences things differently. Some people see a sports car and think, "Wow, I wonder how it works?" Others, "Wow, I hate that colour." Doesn't really matter.