local function movefw()
	z=false
	while z==false do
		z=turtle.forward()
		if turtle.detect()==true then
			z=true
		else
			sleep(0.1)
		end
	end
end

local tArgs = { ... }
if #tArgs <= 0 then
	print( "Usage: miner <dur. of side> <num of repeat>" )
	return
end
L = tonumber( tArgs[1] )
W = tonumber( tArgs[2] )
H = tonumber( tArgs[3] )
flag=0
for k=1,H do
	for y=1,W do
		for x=1,L do
			turtle.digUp()
			if x<L then
				while turtle.detect() == true do
					turtle.dig()
				end
				movefw()
			elseif (x==L)and(y==W) then
				turtle.turnRight()
				turtle.turnRight()
				turtle.up()
				turtle.digUp()
				turtle.up()
			elseif (y<W)and(flag==0) then
				turtle.turnRight()
				while turtle.detect() == true do
					turtle.dig()
				end
				movefw()
				turtle.turnRight()
				flag=1
			elseif (y<W)and(flag==1) then
				turtle.turnLeft()
				while turtle.detect() == true do
					turtle.dig()
				end
				movefw()
				turtle.turnLeft()
				flag=0
			end
		end
	end
end