startup

local input = nil
local rOut = "back"
local rOn = true
local mon = peripheral.wrap("right")
local launching = false
local mX, mY = mon.getSize()

function centerText(monitor, userString)
  y = mY/2
  x =  math.floor(mX/2) - math.floor(string.len(userString)/2)
  monitor.setCursorPos(x, y)
  monitor.write(UserString)
end

function redstoneChange()
  if rOn then
   -- print("Redstone on")
    rs.setOutput(rOut, true)
  else
   -- print("Redstone off")
    rs.setOutput(rOut, false)
  end
end

function monitorTimer()
  --mon.clear()
  --mon.setTextScale(2)
  --print("working")
 -- print("Monitor Timer")
  for i = 0, 25 do
    if (i == 5) or (i < 5) then
      mon.clear()
      mon.setTextColor(colors.green)
      print(25 - i)
      centerText(mon, 25 - i)
    elseif (i == 15) or (i < 15) then
      mon.clear()
      mon.setTextColor(colors.orange)
      print(25 -i)
      centerText(mon, 25 - i)
    elseif (i == 25) or (i < 25) then
      mon.clear()
      mon.setTextColor(colors.red)
      print(25 - i)
      centerText(mon, 25 - i)
    else
      mon.clear()
      mon.setTextColor(colors.white)
      print(15 - i)
      centerText(mon, 15 - i)
    end
    i= i + 1
    sleep(1)
  end
end

redstoneChange()

while true do
 -- input = read()
 -- if input ~= nil or input ~= "" then
   -- if input == "open" then
   os.pullEvent("redstone")
   launching = rs.getInput("left")

   if launching then
      mon.clear()
      rOn = false
      redstoneChange()
      monitorTimer()
      rOn = true
      redstoneChange()
   end
  --  end
--  end
end