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gbdk-music

Music library for gbdk-n with demo music player.

Build

Dependencies:

  • sdcc must be installed
  • gbdk-n must be cloned in dev/

Get ready:

#pacman -S vbam-sdl sdcc
cd dev
git clone https://github.com/andreasjhkarlsson/gbdk-n
cd gbdk-n
make
cd ../../

Build music:

make

Play

Dependencies:

  • vbam or another emulator must be installed

Build and play music:

make playmusic

How

I tried to make the notation tracker-like.

const Song_frame song[] just defines which patterns are played when. Each pattern consists of multiple Pattern_frames

pulse_note and wave_note have values like 0x20 | note_d. This is the note D on the second octave. 0xFF is a NOP

pulse_vi, wave_vi and noise_vi have values like 0xD6. The left number is the volume and the right number is the instrument. 0x?F keeps the instrument untouched.

An example song can be found at music/the_journey_begins.c

The first pulse wave generator does not get used, so it can be used for sound effects.