function goto(tx, tz, tdir)
	dx = x - tx
	dz = z - tz

	if dz > 0 then
		while z > tz do
			while dir != 1 do
				turnLeft()
			end
			forward()
		end
	elseif dz < 0 then
		while z < tz do
			while dir != 3 do
				turnLeft()
			end
			forward()
	end

	if dx > 0 then
		while dir != 2 do
			turnLeft()
		end

		while x > tx do
			forward()
		end
	elseif dx < 0 then
		while dir != 0 do
			turnLeft()
	end

	while dir != tdir do
		turnLeft()
	end
end