tutorial-table-sequencer.lua

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-- Variables
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local isPlaying = false                     -- This checks the state of playback
local count = 0                             -- Keeps count of beats
local noteTable = {60,64,65,67}             -- A table of MIDI Notes
local mainBg = Image("assets/tut-table_bg.png")

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-- User Interface
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mainBg.x = 0
mainBg.y = 0

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-- Functions
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function counter()
    -- Each time the function runs it counts.
    -- Counts up to 4 then restarts.
    if count < 4 then
        count = count + 1
    else
        count = 1
    end

    -- The print is at the end in order to show 
    -- the right number after the previous calculations
    print(count)                            
end

function beatCount()
    -- Checks if the transport is currently playing
    -- While transport is playing, it repeats the functions
    while(isPlaying == true)
    do
        counter()
        playNote(noteTable[count],100,1000)
        waitBeat(1)
    end
end

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-- Event callbacks
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function onTransport(e)
    isPlaying = e
    beatCount()
end

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-- Initialize UI
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setSize(720, 500)