Computercraft boot screen

os.pullEvent = os.pullEventRaw
local function pause(key)
  print('Press X to continue.')
  while true do
        local sEvent, sParam=os.pullEvent('char')
        if string.lower(sParam)==key then
   break
        end
  end
end
term.clear()
sleep(0.3)
term.setCursorPos(15,2)
print("CraftOS is starting...")
term.setCursorPos(20,4)
print("----------")
sleep(0.5)
term.setCursorPos(20,4)
print("o---------")
sleep(0.5)
term.setCursorPos(20,4)
print("oo--------")
sleep(0.5)
term.setCursorPos(20,4)
print("ooo-------")
sleep(0.5)
term.setCursorPos(20,4)
print("oooo------")
sleep(0.5)
term.setCursorPos(20,4)
print("ooooo-----")
sleep(0.5)
term.setCursorPos(20,4)
print("oooooo----")
sleep(0.5)
term.setCursorPos(20,4)
print("ooooooo---")
sleep(0.5)
term.setCursorPos(20,4)
print("oooooooo--")
sleep(0.5)
term.setCursorPos(20,4)
print("ooooooooo-")
sleep(0.5)
term.setCursorPos(20,4)
print("oooooooooo")
sleep(1.0)
term.clear()
term.setCursorPos(21,2)
print("Welcome!")
sleep(2.5)
local intcount=0
term.clear()
term.setCursorPos(1,1)
print("Login")
while true do
  write("Username: ")
  userNameInput = read()
  if userNameInput == "admin" then
  sleep(1)
   break
  elseif userNameInput == "Admin" then
  sleep(1)
   break
  else
  sleep(1)
   print("Username not found.")
   intcount=intcount+1
   sleep(1)
   for i=3,2,-1 do
        term.setCursorPos(1,i)
        term.clearLine()
   end
  end
  if intcount==3 then
   print('You have entered an invalid username too many times.')
   sleep(5)
   os.shutdown()
  end
end
local intcount=0
while true do
  write("Password: ")
  passwordInput = read("*")
  print("Verifying login...")
  sleep(2.5)
  if passwordInput == "banana" then
  print("Loading your settings...")
  sleep(1.5)
  print("Logging in...")
  sleep(3.5)
  term.clear()
  term.setCursorPos(1,1)
   print("Welcome to CraftOS!")
   pause('x')
   term.setCursorPos(1,2)
   term.clearLine()
   break
  else
   print("The password you have entered is incorrect.")
   intcount=intcount+1
   sleep(1)
   for i=6,3,-1 do
        term.setCursorPos(1,i)
        term.clearLine()
   end
  end
  if intcount==3 then
   print('You have entered an incorrect password too many times.')
   sleep(5)
   os.shutdown()
  end
end