code

p = peripheral.wrap("back")
rednet.open("right")
p.setTextScale(1.5)
p.setBackgroundColor(colors.black)
button={}
time = 0

function split(str, delim, maxNb)

  if string.find(str, delim) == nil then
    return { str }
  end

  if maxNb == nil or maxNb < 1 then
    maxNb = 0
  end

  local result = {}
  local pat = "(.-)" ..delim.. "()"
  local nb = 0
  local lastPos

  for part, pos in string.gmatch(str, pat) do
    nb = nb + 1
    result[nb] = part
    if nb == maxNb then
      break
    end
  end

  return result

end

function timer()

    time = time + 1

end

function setTable(name, func, xmin, xmax, ymin, ymax)
   button[name] = {}
   button[name]["func"] = func
   button[name]["active"] = false
   button[name]["xmin"] = xmin
   button[name]["ymin"] = ymin
   button[name]["xmax"] = xmax
   button[name]["ymax"] = ymax
end

function cobble()
  run = 0
  p.clear()
  setTable("1", send, 14, 21, 5, 9)
  screenNum()
  sleep(0.5)
  function2()
end

function send()
    print(thing)
    run = 1
end

function fillNum(text, color, bData)
  p.setBackgroundColor(colors.lime)
  local yspot = math.floor((bData["ymin"] + bData["ymax"]) /2)
  local xspot = math.floor((bData["xmax"] - bData["xmin"] - string.len(text)) /2) +1
  for j = bData["ymin"], bData["ymax"] do
    p.setCursorPos(bData["xmin"], bData["ymin"])
    if j == yspot then
      for k = 0, bData["xmax"] - bData["xmin"] - string.len(text) +1 do
        if k == xspot then
          p.write(text)
        else
          p.write(" ")
        end
      end
    else
      for i = bData["xmin"], bData["xmax"] do
         p.write(" ")
      end
    end
  end
  p.setBackgroundColor(colors.black)
end

function screenNum()
  local currColor
  for name,data in pairs(button) do
    currColor = colors.lime
    fillNum(name, currColor, data)
  end
end

function checkxy(x, y)
   for name, data in pairs(button) do
      if y >=data["ymin"] and  y <= data["ymax"] then
         if x >=data["xmin"] and x <= data["xmax"] then
            data["func"]()
         end
      end
   end
end

function fill(text, color, bData)
    p.setCursorPos(bData["xmin"], bData["ymin"])
    p.write(text)
end

function screen()
   for name,data in pairs(button) do
      fill(name, currColor, data)
   end
end

run = 1

function1 = function()
  line = 2
  item = 89
  p.clear()
  for i=1, 2 do

    rednet.send(item, "update")

    id, message = rednet.receive(0.05)

    if message == nil then
      return
    else
      length = string.len(message) + 3
      setTable(message, cobble, 3, length, line, line)
      mess = {}
      mess = split(message, ":")
      thing = tostring(mess[1])
      line = line + 1
      item = item + 1
      screen()
    end
  end
  os.startTimer(10)
  event, side, x, y = os.pullEvent()
  print(event)
  if event == "monitor_touch" then
    function2()
  end
end

function2 = function()

  print(x.." "..y)
  checkxy(x,y)

end


while true do
  function1()
end