shaft

--name shaft
--version 1.1a

local args = {...}
local compare = 0

torches = false

if #args == 1 then
	compare = tonumber(args[1])
end

local function dig()
	if compare > 0 then
		for i=1,compare do
			turtle.select(i+1)
			if turtle.compare() then
				while turtle.detect() do
					os.sleep(0.1)
				end
			end
		end
	end
	turtle.dig()
end

local function digDown()
	if compare > 0 then
		for i=1,compare do
			turtle.select(i+1)
			if turtle.compareDown() then
				while turtle.detectDown() do
					os.sleep(0.1)
				end
			end
		end
	end
	turtle.digDown()
end

local function forward()
	while not turtle.forward() do
		dig()
	end
end

digDown()
while true do
	for i=1,10 do
		forward()
		digDown()
	end
	if torches then
		turtle.turnLeft()
		dig()
		turtle.select(1)
		turtle.place()
		turtle.turnRight()
	end
	while not turtle.detectDown() do
		os.sleep(0.1)
	end
	turtle.digDown()
end