mining

tArgs = { ... }

if #tArgs ~= 2 then
	print( "Anwendung: stripmine <Laenge> <Reihen>" )
	return
end

length = tonumber(tArgs[1])
amount = tonumber(tArgs[2])

if length < 0 then
	print("Die Laenge muss positiv sein.")
	return
end

if amount < 0 then
	print("Die Anzahl der Reihen muss positiv sein.")
	return
end

function checkSpace()
	if turtle.getItemCount(14) == 1 then
		back()
		unload()
		proceed()
	end
end

function forward()
	while not turtle.forward() do
		turtle.dig()
		turtle.attack()
		sleep(0.1)
	end
end

function unload()
	print( "Inventar leeren..." )
	for n = 1,14 do
		turtle.select(n)
		turtle.drop()
	end
	turtle.select(1)
end

function checkFuel()
	if turtle.getFuelLevel() <= 10 then
		turtle.select(15)
		turtle.refuel(1)
		turtle.select(1)
	end
end

function placeTorch()
	turtle.select(16)
	turtle.placeDown()
	turtle.select(1)
end

function stripper()
	xSteps = 0
	xPos = 0
	placeTorch()
	for i = 1, length do
		turtle.dig()
		checkSpace()
		forward()
		xPos = xPos + 1
		checkFuel()
		turtle.digDown()
		checkSpace()
		if xSteps == 12 then
			placeTorch()
			xSteps = 0
		else
			xSteps = xSteps + 1
		end
	end
	placeTorch()
end

function turn()
	turtle.turnRight()
	turtle.turnRight()
end

function back()
	turn()
	for i = 1, xPos do
		forward()
	end
	if zPos > 0 then
		turtle.turnRight()
		for i = 1, zPos do
			forward()
		end
		turtle.turnLeft()
	end
end

function proceed()
	turtle.turnLeft()
	for i = 1, zPos do
		forward()
	end
	turtle.turnLeft()
	for i = 1, xPos do
		forward()
	end
end

function row()
	row = 0
	zSteps = 0
	zPos = 0
	for i = 1, amount do
		row = row + 1
		if row == 1 then
			stripper()
			back()
		else
			turtle.turnLeft()
			if zPos ~= 0 then
				for i = 1, zPos do
					forward()
					checkFuel()
				end
			end
			for i = 1,3 do
				turtle.dig()
				checkSpace()
				forward()
				zPos = zPos + 1
				zSteps = zSteps + 1
				checkFuel()
				turtle.digDown()
				checkSpace()
			end
			turtle.turnLeft()
			stripper()
			back()
		end
	end
	unload()
end

checkFuel()
turtle.digDown()
checkSpace()
row()
turn()
print("Auftrag beendet, Massa")