from math import sqrt, floor
from random import random

def linear(scale=None): 
  if scale is None:
    return (1 - sqrt(random()))
  else:
    return int(floor(scale * (1 - sqrt(random()))))

pattern_duration = 16
notes = [ 12, 1, 5, 6, 8, 10, 3 ]
durations = [ 0.5, 1.0, 2.0, 4.0, 1.5, 3.0, 2.5, 3.5 ]
octaves = [ 7, 8, 8, 8, 8, 9, 6 ]

def create_pattern():
  pat = []
  total_dur = pattern_duration
  while (total_dur > 0):
    dur = durations[linear(len(durations))]
    if (total_dur - dur < 0):
      dur = total_dur
      total_dur = 0
    else:
      total_dur -= dur
    pat.append(
      (octaves[linear(len(octaves))], notes[linear(len(notes))], dur)
    )
  return pat

def format_pattern(pat, start_time=0.0, time_multiplier=1):
  r = ''
  for p in pat:
    note = "%d.%02d" % (p[0], p[1])
    r += "i 1 %.4f %.4f %s\n" % (start_time, p[2] * time_multiplier, note)
    start_time += p[2] * time_multiplier
  return r

if __name__ == '__main__':
  # print function table definitions
  print "f 1 0 512 10 1"
  pata = create_pattern()
  patb = create_pattern()
  
  # print lowest frequency
  for i in range(4):
    if i == 2:
      print format_pattern(patb, i*pattern_duration)
    else:
      print format_pattern(pata, i*pattern_duration)

  # print mid frequency
  for i in range(8):
    if (i + 2) % 4 == 0:
      print format_pattern(patb, i*pattern_duration/2, 0.5)
    else:
      print format_pattern(pata, i*pattern_duration/2, 0.5)

  for i in range(16):
    if (i + 2) % 4 == 0:
      print format_pattern(patb, i*pattern_duration/4, 0.25)
    else:
      print format_pattern(pata, i*pattern_duration/4, 0.25)