Audio

Playback APIs

Global playback entry points:

• play(ch, snd, sec: ..., loop: ..., resume: ...)
• playm(msc, loop: ...)
• stop([ch])
• playing(ch)
• playPos(ch) / play_pos(ch)

play accepts:

• int (sound index)
• Sound
• List<int>
• List<Sound>
• String (MML-like input)

Channel Objects

channels exposes per-channel control:

• channels[i].play(...)
• channels[i].stop()
• channels[i].playPos()

Sound, Music, Tone Resources

Global resources:

• tones
• sounds
• musics

Important Sound operations:

• set(notes, tones, volumes, effects, speed)
• set_notes, set_tones, set_volumes, set_effects
• mml(...)
• pcm(...)
• save(filename, sec, ffmpeg: ...)

Important Music operation:

• set(seq1, [seq2, seq3, seq4])

Utility

• gen_bgm(preset, instr, seed: ..., play: ...) generates lightweight BGM patterns.