1 files changed, 43 insertions, 0 deletions
diff --git a/nav.lua b/nav.lua
new file mode 100644
index 0000000..354897a
--- /dev/null
+++ b/nav.lua
@@ -0,0 +1,43 @@
+-- orientation: east 1 x+, south 2 z+, west 3 x-, north 4 z-
+
+local function turnTo(o1, o2)
+	if o1 == o2 then
+		return nil
+	end
+
+	if math.abs(o2 - o1) == 2 then
+		turtle.turnLeft()
+		turtle.turnLeft()
+	elseif o2 - o1 == 1 or o2 - o1 == -3 then
+		turtle.turnRight()
+	else 
+		turtle.turnLeft()
+	end
+end
+
+local function moveX(x1, x2, o1)
+	if x1 == x2 then
+		return o1
+	end
+
+	local amount = x2 - x1
+	local o2 = amount > 0 and 1 or 3
+	turnTo(o1, o2)
+
+	for ii = 1, math.abs(amount) do
+		turtle.forward()
+	end
+
+	return o2
+end
+
+local function travel(x1, y1, z1, o1, x2, y2, z2, o2, safe_y)
+	local dx = x2 - x1
+	local dz = z2 - z1
+	local move_safe = dx ~= 0 or dz ~= 0
+	if move_safe then
+
+	end
+end
+
+return { turnTo = turnTo, moveX = moveX }