Orbit Garden

// Orbit Garden: a slow-blooming generative piece.
// Nothing here is recorded: every note is chosen while you listen.
// Mood picks the scale, Energy fills in the rhythm, Brightness opens the filters,
// Space opens the echo and the room. Move them and the garden answers on the next beat.
setcps(params.tempo / 60 / 4);

// 'single quotes' are plain text; "double quotes" would be read as patterns.
const moods = ['minor:pentatonic', 'dorian', 'lydian', 'major:pentatonic'];
const mood = moods[Math.round(params.mood)];
const low = 'C2:' + mood;
const mid = 'C3:' + mood;
const high = 'C4:' + mood;

stack(
  // pad: wide, slow chords that breathe through a filter
  n("<[0,2,4] [-1,1,4] [-2,0,3] [1,3,5]>")
    .scale(mid)
    .s("supersaw")
    .attack(0.6)
    .release(2.5)
    .lpf(sine.range(300, 600 + params.brightness * 3500).slow(16))
    .room(0.3 + params.space * 0.6)
    .gain(0.22),

  // bass: one root per bar, moving with the chords
  n("<0 -1 -2 1>")
    .scale(low)
    .s("sawtooth")
    .lpf(180 + params.brightness * 700)
    .decay(0.35)
    .sustain(0.4)
    .gain(0.5),

  // arpeggio: notes chosen at random from the scale, thinning out as energy drops
  n(irand(8).segment(8))
    .scale(high)
    .s("triangle")
    .decay(0.22)
    .sustain(0)
    .degradeBy(1 - params.energy)
    .delay(params.space * 0.7)
    .delaytime(0.375)
    .delayfeedback(0.45)
    .pan(sine.slow(3))
    .gain(0.45),

  // pulse: a soft kick in a 3-against-8 pattern, only once there's some energy
  note("c1(3,8)")
    .s("sine")
    .decay(0.25)
    .sustain(0)
    .gain(params.energy > 0.25 ? 0.85 : 0),

  // air: brushed noise, busier with energy
  s("white*8")
    .decay(0.03)
    .sustain(0)
    .hpf(7000)
    .degradeBy(1 - params.energy * 0.9)
    .gain(0.12)
);