#!/usr/bin/python

# Study on bytebeat
# By danielinux
# License: GPL

from random import randint
import sys


b = 0x7E

c = 0x30
t=0

bass_note = [ 18, 9, 6, 16, 12, 10, 12, 10 ]

high_note = [ 18, 9, 12, 32, 12, 10,  24, 27 ]

high2 = [6, 18, 6, 16, 3, 10, 2, 27, 5, 27, 20, 16, 48, 32, 32, 24 ]
snare = [ 0x41,  0x89,  0xAF,  0x49,  0xC6,  0x20,  0xC0,  0x65,  0xCA,  0xAE,  0xB8,  0x42,  0xAD,  0x52,  0x25,  0xAC,  0xFB,  0xD8,  0x6D,  0xD0,  0x6F,  0x41,  0xB5,  0x53,  0x20,  0x81,  0x97,  0x5F,  0xB4,  0xB7,  0x80,  0xC3,  0x89,  0x69,  0x53,  0x5C,  0xB9,  0x65,  0x22,  0xFB,  0x35,  0xE4,  0x94,  0x2E,  0xD9,  0x6E,  0xDB,  0xEA,  0x4B,  0x78,  0x7E,  0x8C,  0x58,  0x46,  0x2C,  0xD0,  0x3A,  0xC5,  0x68,  0x82,  0x81,  0x62,  0x6F,  0xA6,  0xE0,  0xB5,  0x4D,  0x56,  0xF9,  0xF4,  0xD3,  0xBC,  0x6C,  0x66,  0xB4,  0x45,  0xFF,  0x2B,  0xB3,  0xE1,  0x5A,  0x8D,  0xC2,  0x3A,  0xFF,  0x5B,  0xE1,  0x32,  0x23,  0xE4,  0x22,  0xD0,  0x9A,  0x43,  0xD8,  0xA3,  0xF5,  0x5A,  0x3E,  0x38,  0x60,  0x61,  0xCC,  0xFE,  0x3D,  0x84,  0x25,  0xCC,  0x78,  0xCB,  0x30,  0x7D,  0x8F,  0xAB,  0x60,  0x3E,  0xED,  0x7A,  0x9C,  0x9E,  0xFC,  0xF7,  0xC3,  0x5B,  0x80,  0xD0,  0x53,  0xCC]

while 1:
    x = 0
    u = (~(t & 0xFF) & 0xFF)
    beat = t >> 11                
    part = (beat >> 3)     # part
    hit = (t - (beat << 11)) # Hit: 0-1024 
    bnote = (t - ((t >> 10) << 10)) << 5
    note =  (t - ((t >> 14)<<14)) << 9
    note2 =  (t - ((t >> 15)<<15)) << 9


    #bass drum 
    x = ((t >> 5)|(t >> 4)) & b
    if (x > 0):
        x = b


    #drop
    if (hit < 128):
        x |= 0xF0 

    #snare
    if ((beat & 0x01) or ((beat & 0x0F) == 0x06)) and (hit < 128) :
        x ^=  (snare[hit] >> 1)


    #bass
    if (part > 0):
        x ^= (bnote / bass_note[beat % len(bass_note)]) & ~(b)


    # voice 1
    if ((part % 8) > 4) or (part > 0 and part % 8 == 0):
        x ^= (note / high_note[beat % len(high_note)]) & (0x40)
    elif (part > 0):
        x ^= (note2 / high2[beat % len(high2)]) & (0x50)

    sys.stdout.write(chr(x & 0xFF))
    t+=1