constellation-gen.sh

#!/bin/bash

# bank/pattern generator for the Acid Rain Technology Constellation
# an eight channel gate sequencer that uses euclidean patterns and logic

# random selectors
operators=("AND" "OR" "XOR")
probabilities=("25" "50" "75" "100")
minlength=3
maxlength=16
maxratchet=1
maxdivision=16

for bank in {0..1}; do
  bankname=$(printf "%03d" $bank)
  mkdir -p $bankname
  for i in {0..19}; do
    filename=$(printf "$bankname/%02d.txt" $i)
    # write clock header - static for now
    echo "starting bank $bankname pattern $i"
    echo "clock = 0,1,120,4,1,1,1,50" > $filename

    # write cv headers - static for now
    for j in {0..9}; do
      echo "cv$j = 0,0,0,0,0,100" >> $filename
    done

    # generate channel settings
    for k in {0..7}; do
      echo "starting channel $k"
      op=${operators[$RANDOM % ${#operators[@]} ]}
      echo "C$k = 0,0,1,1,50,0,$op" >> $filename
      for l in {0..7}; do
        mute=$(shuf -i 0-1 -n 1)
        divide=$(shuf -i 1-$maxdivision -n 1)
        ratchet=$(shuf -i 1-$maxratchet -n 1)
        length=$(shuf -i $minlength-$maxlength -n 1)
        events=$(shuf -i 1-$((length > 1 ? length-1 : 1)) -n 1)
        rotate=$(shuf -i 1-$((length > 1 ? length-1 : 1)) -n 1)
        prob=${probabilities[$RANDOM % ${#probabilities[@]} ]}
        echo "C$k.P$l = $mute,$prob,$length,$events,$rotate,1,$ratchet,$divide" >> $filename
      done
    done
  done
done