--GLOBAL VARIABLES--

osVer = "Alpha v1.0!"
x, y = term.getSize()
startY = math.floor((y / 2) - 2)
black = colors.black
white = colors.white
na = "na"

--SCREEN FUNCTIONS--

function metaScreen(xPos, yPos, bc, tc, cl)
    if xPos ~= "na" then
        term.setCursorPos(xPos, yPos)
    end
    if cl then
        term.setBackgroundColor(black)
        term.clear()
    end
    if bc ~= "na" then
        term.setBackgroundColor(bc)
    end
    if tc ~= "na" then
        term.setTextColor(tc)
    end
end

function drawSplash()
    metaScreen(1, startY, na, na, true)

    print("            ___        _      ___  ___  (r)")
    print("           | _ \\___ __| |_ _ / _ \\/ __|")
    print("           |  _/ -_) _' | '_| (_) \\__ \\ ")
    print("           |_| \\___\\__,_|_|  \\___/|___/")
    print(" ")
    print("                    "..osVer)
end

function loadBar(t)
    metaScreen(2, y - 1, white, na, false)

    for i = 1, x - 2 do
        write(" ")
        sleep(t / x)
    end
end

--Program--

drawSplash()
loadBar(5)
metaScreen(1, 1, black, na, true)
shell.run("OS/OSMain")