Drill 3

local arg = { ... }
local c = arg[1]
local y = 0
local x = 1
for i=1,c do
	for i=1,x do
		turtle.forward()
	end
	local continue = true
	while continue do
		for i=1,4 do
			turtle.dig()
			turtle.turnRight()
		end
		turtle.digDown()
		local moved = turtle.down()
		if moved then
			y = y + 1
		else
			continue = false
		end
	end



	for i=1,y do
		turtle.up()
	end
	y = 0
	turtle.turnRight()
	turtle.turnRight()
	for i=1,x do
		turtle.forward()
	end
	x = x + 3

	for i=1,16 do
		turtle.select(i)
    	if turtle.getFuelLevel() < 10000 then
				turtle.refuel()
        end
        data = turtle.getItemDetail()
        if data then
			if (data.name == "minecraft:cobblestone" or data.name == "minecraft:dirt" or data.name == "minecraft:stone") then
				turtle.turnLeft()
				turtle.turnLeft()
				turtle.drop()
				turtle.turnRight()
				turtle.turnRight()
			end
		end
		turtle.drop()
	end
	turtle.turnLeft()
	turtle.turnLeft()
end