dt

local message, position = "", ""
local id, delay = 0 ,0.5
turtle.select(1)
rednet.open("right")

print("Current fuel level:" .. turtle.getFuelLevel())
if turtle.getFuelLevel() < 10 then
 print("This is too less!")
 shutdown()
end

if turtle.detectDown() and not turtle.detectUp() then
 position = "ceiling"
elseif turtle.detectUp() and not turtle.detectDown() then
 position = "floor"
end

if position == "" then
 print("Turtle failed to find it's position.")
 sleep(2)
 shutdown()
else
 print("Current relativ position is the " .. position)
 print("Waiting for rednet message!")
end

while true do
 id, message = rednet.receive()
 sleep(delay)
 if message == "open" and position == "ceiling" then
  print("Opening!")
  turtle.digDown()
  turtle.up()
  turtle.placeDown()
 elseif message == "open" and position == "floor" then
  print("Opening!")
  turtle.digUp()
  turtle.down()
  turtle.placeUp()
 elseif message == "close" and position == "ceiling" then
  print("Closeing!")
  turtle.digDown()
  turtle.down()
  turtle.placeDown()
 elseif message == "close" and position == "floor" then
  print("Closeing!")
  turtle.digUp()
  turtle.up()
  turtle.placeUp()
 end
end