bootloader

local list1 = "CraftOS"
local list1selected = true
local list2 = "Reboot"
local list2selected = false
local list3 = "Shutdown"
local list3selected = false

function redraw()
 term.setBackgroundColor(colors.white)
 term.setTextColor(colors.blue)
 term.clear()
 term.setCursorPos(1,1)
 print("ComputerCraft Universal Bootloader")
 term.setCursorPos(1,3)
end

function countdown(startval)
 for i = 1, startval, -1 do
  term.clear()
  redraw()
  print("Computer is automatically starting in "..i)
 end
end

function rawread()
  while true do
  local sEvent, param = os.pullEvent("key")
    if sEvent == "key" then
        if param == 208 then
            if list1selected == true then
            term.clear()
            redraw()
            list2selected = true
            list1selected = false
            elseif list2selected == true then
            term.clear()
            redraw()
            list1selected = true
            list2selected = false
        end
        elseif param == 200 then
            if list2selected == true then
            term.clear()
            redraw()
            list2selected = false
            list1selected = true
        elseif list3selected == true then
        term.clear()
        redraw()
        list3selected = false
        list2selected = true
    end
    elseif param == 28 then
    if list1selected == true then

     term.clear()
     shell.run("shell")
    elseif list2selected == true then

     os.reboot()

    elseif list3selected == true then
     os.shutdown()

    end
   end
 end
end


   if list1selected == true then
     term.clear()
     redraw()
     term.setBackgroundColor(128)
     print(list1)
     term.setBackgroundColor(256)
     print(list2)
     print(list3)
     elseif list2selected == true then
        term.clear()
        redraw()
        term.setBackgroundColor(256)
        print(list1)
        term.setBackgroundColor(128)
        print(list2)
        term.setBackgroundColor(256)
        print(list3)
            elseif list3selected == true then
                term.clear()
                redraw()
                term.setBackgroundColor(256)
                print(list1)
                print(list2)
                term.setBackgroundColor(128)
                print(list3)
   end
end

rawread()