Module music 

The demo’s two pieces of music, written out as MIDI events.

The demo carries no MIDI asset: both tracks are short enough to state, and stating them keeps the notes in the source that shapes them.

Re-exports

use std::sync::Arc; 🔒

use unlit3dx::prelude::MidiEvent; 🔒

use unlit3dx::prelude::MidiEventKind; 🔒

use unlit3dx::prelude::midi_file; 🔒

use unlit3dx::synth::MidiFile; 🔒

Constants

BGM_ARPEGGIO 🔒

Which chord key sounds on each of a bar’s eight eighths: up the chord and back down again, so the accompaniment moves with the balls.

BGM_BAR_SECONDS 🔒

How long one bar of the background loop lasts, in seconds.

BGM_CHORDS 🔒

The bars of the background loop, as chords: three keys each, root first. Four bars of a I-vi-IV-V turnround, twice, so the loop breathes without changing key.

BGM_MELODY 🔒

The melody over the loop, as scale degrees: an index into SCALE, or None for a rest. One entry per half bar.

ELECTRIC_PIANO_PROGRAM

The General MIDI electric piano, as a zero-based program number: soft enough to sit under the sequence without competing with it.

MUSIC_BOX_PROGRAM

The General MIDI music box, as a zero-based program number: a bell like plucked timbre that stays smooth where a piano turns brash.

SCALE

The pentatonic scale the sequence walks, as MIDI keys.

Functions

bgm_midi

The looping background music: a bass note per bar, the chord’s keys arpeggiated across its eight eighths, and a slow melody on top, all on the electric piano. Written out as events rather than read from a file: the demo carries no MIDI asset, and the loop is short enough to state.

note 🔒

Push one note onto an event list: a press at start, a release hold seconds later, both on channel.

sequence_midi

The demo’s MIDI sequence: the scale walked up and back down, one note every 0.28 seconds, each held for 0.25 of them, on the music box.