Minecraft Turtle Program - Battle Tower Grabber

term.clear()
print("Start where the first chest was facing the second half of the chest")

startingfuel = turtle.getFuelLevel()

print("-----------")
print("Turtle fuel:")
print(startingfuel)

if (startingfuel<300) then
   print("--------------------------------------")
   print("Low on fuel! (should have at least 300)")
   return
end

height = 0
ceiling = false
turtle.select(1)

function nextFloor()

  if turtle.detectUp() then
    ceiling = true
  else
    ceiling = false
  end
  while ceiling ~= true do
    turtle.up()
    height=height+1
    if turtle.detectUp() then
      ceiling = true
    else
      ceiling = false
    end
  end

end

function reset()

     if height>0 then
         for i=0,height,1 do
          turtle.down()
          height=height-1
         end
     end
  turtle.select(1)
end

function getChestContents()

   -- We're at the floor, break that first...
   turtle.digUp()
   turtle.up()
   height=height+1

   -- Now the doubleslab the chest is on...
   turtle.digUp()
   turtle.up()
   height=height+1

   -- now that half of the chest...
   turtle.digUp()
   turtle.suckUp()
   turtle.up()
   height=height+1

   -- Vacuum all around
   turtle.turnRight()
   turtle.suck()
   turtle.turnRight()
   turtle.suck()
   turtle.turnRight()
   turtle.suck()
   turtle.turnRight()

   -- Break second half of chest
   turtle.dig()
   turtle.suck()
   turtle.forward()

   -- Vacuum
   turtle.suck()
   turtle.turnRight()
   turtle.suck()
   turtle.turnRight()
   turtle.suck()
   turtle.turnRight()
   turtle.suck()
   turtle.turnRight()

   turtle.back()

   --Now back to the spot the chest was on, blocking the hole
   turtle.down()
   height=height-1

end

-- 9 floors above:
nextFloor()
getChestContents()

nextFloor()
getChestContents()

nextFloor()
getChestContents()

nextFloor()
getChestContents()

nextFloor()
getChestContents()

nextFloor()
getChestContents()

nextFloor()
getChestContents()

nextFloor()
getChestContents()

nextFloor()
getChestContents()

reset()

print("---------------------")
print("Ending turtle fuel:")
print(turtle.getFuelLevel())
print("Fuel used:")
print(startingfuel-turtle.getFuelLevel())