darkiron

Args = {...}

function printusage()
	print("Usage:")
	print("Place iron blocks in first slot.")
	print("Type darkiron <amount>")
end

function darkiron(num)
	turtle.select(1)
	for i=1,num do
		if turtle.getItemCount(1) == 0 then
			print("Cannot find any iron blocks.")
			printusage()
			return
		end
		turtle.place()
		if turtle.getItemCount(1) == 0 then
			os.sleep(3)
		else
			while turtle.compare() do
				os.sleep(0.5)
			end
		end
		turtle.dig()
		os.sleep(0.5)
	end
end

if #Args ~= 1 or tonumber(Args[1]) == 0 then
	printusage()
else
	darkiron(tonumber(Args[1]))
end