args = {...}
distance = 50
currentDist = 0
i = 0
goingBack = false

turtle.refuel()

function doMove (back)
	if back == false then
		while turtle.detect() do
			turtle.dig()
		end
		turtle.forward()
	else
		turtle.back()
	end

	currentDist = currentDist + 1

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


	if currentDist == distance then
		if goingBack == true then
			turtle.turnLeft()
			turtle.dig()
			turtle.forward()
			turtle.dig()
			turtle.forward()
			turtle.dig()
			turtle.forward()
			turtle.turnRight()
			currentDist = 0
			goingBack = false
			doMove(goingBack)
		else
			goingBack = true
			currentDist = -1
			doMove(goingBack)
		end
	elseif currentDist < distance then
		doMove(back)
	end

end


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