keypad.lua

local c = require("component")
local keypad = c.os_keypad
local computer = require("computer")
local event = require("event")

local code = "12345678"
local user_code = ""

local run = true
while run do
  local e, address, _, key = event.pull(1000)
  if (e and e == "interrupted") then
    run = false
  elseif (e and e == "keypad") then
    if (key and key == "*") then
      user_code = ""
      keypad.setDisplay("")
    elseif (key) then
      user_code = user_code .. key
      keypad.setDisplay(user_code)
    end
    if (string.len(code) == string.len(user_code)) then
      if (code == user_code) then
        computer.beep(2000)
        print("Code correct!")
        keypad.setDisplay("CORRECT")
        user_code = ""
      else
        computer.beep(100)
        print("Wrong code!")
        keypad.setDisplay("WRONG")
        user_code = ""
      end
    end
  end
end