local args = {...}

os.loadAPI("/lib/mturtle")

local mx = tonumber(args[1])
local mz = tonumber(args[2])

local origin = mturtle.getPos()

local placeFunc
if args[3] == nil then
	placeFunc = function()
		mturtle.selectItem()
		turmle.placeDown()
	end
else
	placeFunc = loadstring(args[3])
end

for x = 1, mx do
	for z = 1, mz - 1 do
		placeFunc()
		mturtle.forward()
	end
	if x < mx then
		placeFunc()
		mturtle.alterturn(x)
		mturtle.forward()
		mturtle.alterturn(x)
	end
end
placeFunc()

mturtle.goTo(origin)