keypad

monitor = peripheral.wrap("monitor_3")
glass = peripheral.wrap("openperipheral_bridge_1")

correct = 0
required = 5


while true do
  function RandKey()
  rand = math.random(0,9)
  return rand
end

  digit = RandKey()
  displayDigit = tostring(digit)
  dCorrect = tostring(correct)

  glass.clear()
  glass.addText(225,120,displayDigit,0xffffff)
 -- glass.addText(225,150,correct,0x00f000)
  glass.sync()


    t = {
        {text = "1", x = 1, y = 1, txtCol = colours.white, bgCol = colours.blue},
        {text = "2", x = 3, y = 1, txtCol = colours.white, bgCol = colours.blue},
        {text = "3", x = 5, y = 1, txtCol = colours.white, bgCol = colours.blue},
        {text = "4", x = 1, y = 3, txtCol = colours.white, bgCol = colours.blue},
        {text = "5", x = 3, y = 3, txtCol = colours.white, bgCol = colours.blue},
        {text = "6", x = 5, y = 3, txtCol = colours.white, bgCol = colours.blue},
        {text = "7", x = 1, y = 5, txtCol = colours.white, bgCol = colours.blue},
        {text = "8", x = 3, y = 5, txtCol = colours.white, bgCol = colours.blue},
        {text = "9", x = 5, y = 5, txtCol = colours.white, bgCol = colours.blue},
        {text = "0", x = 7, y = 1, txtCol = colours.white, bgCol = colours.blue},
  --{text = tostring(required-correct), x = 7, y = 3, txtCol = colors.white, bgCol = colors.blue}
    }

    function writeButtons(_table)
        for i, v in pairs(_table) do
            monitor.setCursorPos(v.x, v.y)
            monitor.setTextColour(v.txtCol)
            monitor.setBackgroundColour(v.bgCol)
         monitor.write(v.text)
        end
    end

    function isValidClick(_table, mx, my)

        for i, v in pairs(_table) do
            if mx >= v.x and mx <= (v.x + #v.text) and my == v.y then
                 return true, v.text
            end
        end
        return false, nil
    end

    writeButtons(t)


        _, but, x, y = os.pullEvent("monitor_touch")
        bClick, option = isValidClick(t, x, y)
        if bClick then
        if tonumber(option) == digit then correct = correct + 1
  else if tonumber(option) ~= digit then correct = 0
    end
end
end

monitor.setCursorPos(7,5)
monitor.setBackgroundColor(colors.green)
monitor.setTextColor(colors.white)
monitor.write(tostring(required-correct))

if correct >= required then
  redstone.setBundledOutput("back",colors.red)
  sleep(2)
  redstone.setBundledOutput("back",0)
  correct = 0
  end
end