From: Vanessa Ezekowitz <vanessaezekowitz@gmail.com>
Date: Wed, 11 Dec 2013 02:39:47 +0000 (-0500)
Subject: More sanity checks on the nodeside() function, courtesy ShadowNinja
X-Git-Url: http://81.2.79.47:8989/gitweb/?a=commitdiff_plain;h=29da8992ec32e0123e971c4ffc98015fbc2ae3be;p=zefram%2Fminetest%2Fpipeworks.git

More sanity checks on the nodeside() function, courtesy ShadowNinja
---

diff --git a/autoplace_tubes.lua b/autoplace_tubes.lua
index 4bb31bc..518caf8 100644
--- a/autoplace_tubes.lua
+++ b/autoplace_tubes.lua
@@ -28,7 +28,11 @@ end
 
 --a function for determining which side of the node we are on
 local function nodeside(node, tubedir)
-	if not tubedir or not node or not node.param2 then return "back" end
+	if not tubedir or
+	   not node or
+	   not (type(node.param2) == "number" and node.param2 > 0 and node.param2 < 23) then
+		return "back"
+	end
 
     --get a vector pointing back
     local backdir = minetest.facedir_to_dir(node.param2)