// Steps: an 8-step sequencer – arrays of knobs, buttons and LEDs, a runtime index and a loop.
module steps "Steps" hp 16 {
  desc de "8-Schritt-Sequencer: Jeder Takt geht einen Schritt weiter, Taster schalten Schritte stumm, LEN kürzt die Folge, RST beginnt von vorn."
  desc en "8-step sequencer: every clock moves one step on, buttons mute steps, LEN shortens the sequence, RST starts over."

  const N = 8
  // Arrays: pitch1 … pitch8, on1 … on8, l1 … l8 – "#" in a label becomes the step number, "at … step" spaces them.
  knob   pitch[N] "#" -2..2 = [0, 0.25, 0.583, 0.25, 1, 0.583, 0.333, 0.75] unit v size s at 8 30 step 9.3 0
  button on[N]    ""  = on at 8 44 step 9.3 0
  led    l[N]     green    at 8 52 step 9.3 0
  knob   len "LEN" 1..N = N int at 40.5 70
  in     clk "CLK"  gate  at 14 100
  in     rst "RST"  gate  at 28 100
  out    cv  "CV"   pitch at 53 100
  out    g   "GATE" gate  at 67 100
  state  n = 0                        // current step (0 = step 1)
  state  armed = false                // the first clock after start or RST plays step 1

  process {
    t = rise(clk)
    if rise(rst) {
      n = 0
      armed = false
    } else if t {
      if armed { n = (n + 1) % len } else { armed = true }
    }
    cv = pitch[n]                     // index at run time
    g = gate(high(clk) and on[n])
    for i in 0..N { l[i] = n == i }   // unrolled: eight assignments
  }
}