args = {...}
distance = args[1]
currentDist = 0
movingBack = false
i = 0

turtle.refuel()

print("Fuel: " .. turtle.getFuelLevel())
sleep(2)
doMove(movingBack)

function doMove (back)
	if back then
		turtle.back()
	end
	if back == false then
		turtle.dig()
		turtle.forward()

	end
	currentDist = currentDist + 1

	i = i + 1
	if i % 10 == 0 then
		print("Fuel: " .. turtle.getFuelLevel())
		i = 0
	end

	if currentDist == distance then
		if movingBack == false then
			currentDist = 0
			movingBack = true
		end
		if movingBack == true then
			return
		end
	end
	if currentDist < distance then
		doMove(movingBack)
	end

end