playSongFromNoteBlockFile

s = peripheral.wrap("top")
volume = 2.0
songName = "test.lua"

function playNote(instrument, note)
    s.playNote(instrument, volume, tonumber(note))
end

function wait(time)
    time = tonumber(time)*2
    sleep(tonumber(time)*0.05)
end

function parse(str)
    if(string.find(str, "delay:")) then
        wait(string.sub(str,7))
    else
        instru_pre = string.match(str, ".*:")
        print(instru_pre)
        instru = string.sub(instru_pre, 1, string.len(instru_pre)-1)
        note_pre = string.match(str, ":.*")
        note = string.sub(note_pre, 2)
        playNote(instru,note)
    end
end

function main()
    song = fs.open(songName, "r")
    x = song.readLine()
    while x ~= nil do
        parse(x)
        x = song.readLine()
    end
end

main()