launch cactus

1 files changed, 8 insertions, 4 deletions

diff --git a/cactus.lua b/cactus.lua
index 83b3f58..0934d55 100644
--- a/cactus.lua
+++ b/cactus.lua
@@ -68,10 +68,14 @@ local function turn_to_face(newfacing)
 end
 
 local function moveby_xz(dv)
-	turn_to_face(vector.new(numutil.sign(dv.x), 0, 0))
-	for i=1,math.abs(dv.x) do turtle.forward() end
-	turn_to_face(vector.new(0, 0, numutil.sign(dv.z)))
-	for i=1,math.abs(dv.z) do turtle.forward() end
+	if dv.x ~= 0 then
+		turn_to_face(vector.new(numutil.sign(dv.x), 0, 0))
+		for i=1,math.abs(dv.x) do turtle.forward() end
+	end
+	if dv.z ~= 0 then
+		turn_to_face(vector.new(0, 0, numutil.sign(dv.z)))
+		for i=1,math.abs(dv.z) do turtle.forward() end
+	end
 end
 
 local function moveby(delta)