print("2way turtle mine #7")

-- args
local args = {...}

-- usage
if #args < 1 then
  print("Usage: 2waym <tunnel length in blocks>")
  print("After minig the given blocks the turtle")
  print("turns 2 blocks left and mines again the way back")
  return 0
end

print(args[1])

-- digAll function
function digAll()
	-- while vorne nix
	while turtle.detect() do
	    turtle.dig()
	end
end

-- begin
for iturn = 1, 2, 1 do
	-- mining forward
	print("> loop!")
	for i = 1, args[1], 1 do
		print(i)
		digAll()
		turtle.forward()
		turtle.digDown()
	end

	-- turn around
	if iturn == 1 then
		print("> turn around")

		turtle.turnLeft()
		digAll()
		turtle.forward()
		turtle.digDown()

		digAll()
		turtle.forward()
		turtle.digDown()

		digAll()
		turtle.forward()
		turtle.digDown()

		turtle.turnLeft()
	end


end

print("> fertig")