CC OS 2 music

local w,h = term.getSize()

--Center Text

function printCentered (y,s)
    local x = math.floor((w - string.len(s)) /2)
    term.setCursorPos(x,y)
    term.clearLine()
    term.write(s)
end

--Drawmenu

local nOption = 1

local function drawMenu()
    term.setBackgroundColor(colors.cyan)
    term.clear()
    term.setCursorPos(1,1)
    local logo = paintutils.loadImage("os/.logo")
    paintutils.drawImage(logo, 1, 1)
    term.setBackgroundColor(colors.cyan)

    term.setCursorPos(w-11,1)
    if nOption == 1 then
        term.write("Play Disc")
    elseif nOption == 2 then
        term.write("Stop Disc")
    elseif nOption == 3 then
        term.write("Eject Disc")
    elseif nOption == 4 then
        term.write("Exit")
    else
        end
end

--GUI

term.clear()
local function drawFrontend()
    printCentered(math.floor(h/2) -3, "")
    printCentered(math.floor(h/2) -2, "START")
    printCentered(math.floor(h/2) -1, "")
    printCentered(math.floor(h/2) + 0, (nOption == 1 and "[ Play Disc ]") or "Play Disc")
    printCentered(math.floor(h/2) + 1, (nOption == 2 and "[ Stop Disc ]") or "Stop Disc")
    printCentered(math.floor(h/2) + 2, (nOption == 3 and "[ Eject Disc ]") or "Eject Disc")
    printCentered(math.floor(h/2) + 3, (nOption == 4 and "[ Exit ]") or "Exit")
end

--Display

drawMenu()
drawFrontend()

while true do
    local e,p = os.pullEvent()
        if e == "key" then
            local key = p
            if key == keys.up or key == 200 then

                if nOption > 1 then
                    nOption = nOption -1
                    drawMenu()
                    drawFrontend()
                end
            elseif key == keys.down or key == 208 then
                if nOption < 5 then
                    nOption = nOption +1
                    drawMenu()
                    drawFrontend()
                end
        elseif key == keys.enter then
            break
end
end
end

term.clear()

--Conditions
if nOption == 1 then
    a = disk.hasAudio("left")
    b = disk.hasAudio("right")
    c = disk.hasAudio("top")
    d = disk.hasAudio("bottom")
    if a == true then
        disk.playAudio("left")
    elseif b == true then
        disk.playAudio("right")
    elseif c == true then
        disk.playAudio("top")
    elseif d == true then
        disk.playAudio("bottom")
    end
    shell.run("Music")
elseif nOption == 2 then
    a = disk.hasAudio("left")
    b = disk.hasAudio("right")
    c = disk.hasAudio("top")
    d = disk.hasAudio("bottom")
    if a == true then
        disk.stopAudio("left")
    elseif b == true then
        disk.stopAudio("right")
    elseif c == true then
        disk.stopAudio("top")
    elseif d == true then
        disk.stopAduio("bottom")
    end
    shell.run("Music")
elseif nOption == 3 then
    a = disk.hasAudio("left")
    b = disk.hasAudio("right")
    c = disk.hasAudio("top")
    d = disk.hasAudio("bottom")
    if a == true then
        disk.eject("left")
    elseif b == true then
        disk.eject("right")
    elseif c == true then
        disk.eject("top")
    elseif d == true then
        disk.eject("bottom")
    end
    shell.run("Music")
else
    shell.run("os/.functions")
end