OSC.lua

previousChordNotesArray = nil

function connectOSC()
    -- Left empty; OSC networking removed in favor of direct Renoise 6.2 API calls
end

function getVelocityValue()
    if renoise.song().transport.keyboard_velocity_enabled then
        return renoise.song().transport.keyboard_velocity
    else
        return 127
    end
end

function stopPreviousChord(chordNotesArray)
    local song = renoise.song()
    local instrument_index = song.selected_instrument_index
    local track_index = song.selected_track_index

    for i = 1, #chordNotesArray do
        local note = chordNotesArray[i]
        -- Renoise API takes raw note values (0 = C-0, 119 = B-9)
        song:trigger_instrument_note_off(instrument_index, track_index, note)
    end
end

function stopCurrentChordTimer()
    if previousChordNotesArray ~= nil then
        stopPreviousChord(previousChordNotesArray)
        previousChordNotesArray = nil
    end
    if renoise.tool():has_timer(stopCurrentChordTimer) then
        renoise.tool():remove_timer(stopCurrentChordTimer)
    end
end

function playChordWithOsc(chordNotesArray)
    -- Stop the previous chord if it is still playing
    if previousChordNotesArray ~= nil then
        stopPreviousChord(previousChordNotesArray)
    end

    if renoise.tool():has_timer(stopCurrentChordTimer) then
        renoise.tool():remove_timer(stopCurrentChordTimer)
    end

    local song = renoise.song()
    local instrument_index = song.selected_instrument_index
    local track_index = song.selected_track_index

    -- The Renoise API expects volume normalized between 0.0 and 1.0
    local velocityValue = getVelocityValue()
    local volume = velocityValue / 127.0

    for i = 1, #chordNotesArray do
        local note = chordNotesArray[i]
        song:trigger_instrument_note_on(instrument_index, track_index, note, volume)
    end

    previousChordNotesArray = chordNotesArray

    -- Add a timer to stop the chord after 1 second (1000 ms)
    renoise.tool():add_timer(stopCurrentChordTimer, 1000)
end