os.pullEvent = os.pullEventRaw
local w, h = term.getSize()
--Variables
local user = "Human"
local pass = "password"
local uAllow = false
local pAllow = false
version = "1.0"
--Functions
function clear()
  term.clear()
  term.setCursorPos(1,1)
end
function printCentered(msg, h)
  term.setCursorPos(w/2 - #msg/2, h)
  write(msg)
end
local function printHeader()
  printCentered("Tech Lab os"..version, 1)
  printCentered(" by: Clothespin Fox", 2)
end
local function uCheck()
  write("Username: ")
  uInput = read()
  if uInput == user then
    uAllow = true
  else
    print("Username Sbagliato!")
    sleep(2)
    os.reboot()
  end
end
local function pCheck()
  write("Password: ")
  pInput = read("*")
  if pInput == pass then
    pAllow = true
  else
    print("Password Sbagliata!")
    sleep(2)
    os.reboot()
  end
end
--Main Program
clear()
printHeader()
term.setCursorPos(1,4)
uCheck()
if uAllow == true then
  term.setCursorPos(1,5)
  pCheck()
end
if uAllow == true and pAllow == true then
  textutils.slowPrint("Loggo . . . . . .")
  sleep(5)
  clear()
  print("Loggato con successo!")
  print("Ora puoi usare il computer!")
end