module ZXUtils::MusicBox

`MusicBox`¶ ↑

MusicBox is a Ruby Domain Specific Language designed to create AY-3-8910/8912 music.

The music can be compiled to a ZXUtils::AYMusicPlayer module or a Z80::Program class suitable for importing by another Z80 program.

require 'zxutils/music_box'

class MySong
  include ZXUtils::MusicBox::Song

  tempo 128

  all_channels do
    tone_on; noise_off; volume 15
    set_instrument :instr1
  end

  channel :a do
    g 3, 4; e 3, 4; e 3, 4
    f 3, 4; d 3, 4; d 3, 4
    c 3, 8; e 3, 8; g 3, 4
  end

  channel :b do
    g 2, 4; e 2, 4; e 2, 4
    f 2, 4; d 2, 4; d 2, 4
    c 2, 8; e 2, 8; g 2, 4
  end

  channel :c do
    g 1, 4; e 1, 4; e 1, 4
    f 1, 4; d 1, 4; d 1, 4
    c 1, 8; e 1, 8; g 1, 4
  end

  all_channels do
    volume 0; pause 4
  end

  channel :a do
    g 3, 4; e 3, 4; e 3, 4
    f 3, 4; d 3, 4; d 3, 4
    c 3, 8; e 3, 8; c 3, 2
  end

  channel :b do
    g 2, 4; e 2, 4; e 2, 4
    f 2, 4; d 2, 4; d 2, 4
    c 2, 8; e 2, 8; c 2, 2
  end

  channel :c do
    g 1, 4; e 1, 4; e 1, 4
    f 1, 4; d 1, 4; d 1, 4
    c 1, 8; e 1, 8; c 1, 2
  end

  envelope :decay1, [1, 0.49], [64, -1.0], :loop, [255, 0.0]

  instrument :instr1 do
    volume 10; start_volume_envelope :decay1
  end
end

mysong = MySong.new
mysong.validate_recursion_depth!
mysong.to_player_module.save_tap 'mysong'

require 'z80'
puts mysong.to_program.new(0x8000).debug

module ZXUtils::MusicBox

MusicBox¶ ↑

`MusicBox`¶ ↑