From b6ae419b009a2b547ec3ec40f76e4108194a2335 Mon Sep 17 00:00:00 2001
From: Jeija <norrepli@gmail.com>
Date: Thu, 26 Mar 2015 07:29:34 +0100
Subject: [PATCH] Return if invalid parameters are given to node_detector_scan
(e.g. unloaded area), should fix #228
---
mesecons_detector/init.lua | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/mesecons_detector/init.lua b/mesecons_detector/init.lua
index 1a8595d..e589676 100644
--- a/mesecons_detector/init.lua
+++ b/mesecons_detector/init.lua
@@ -135,8 +135,12 @@ end
-- returns true if player was found, false if not
local node_detector_scan = function (pos)
- local node = minetest.get_node(pos)
- local frontpos = vector.subtract(pos, minetest.facedir_to_dir(node.param2))
+ if not pos then return end
+ local node = minetest.get_node_or_nil(pos)
+ if not node then return end
+ local scandir = minetest.facedir_to_dir(node.param2)
+ if not scandir then return end
+ local frontpos = vector.subtract(pos, scandir)
local frontnode = minetest.get_node(frontpos)
local meta = minetest.get_meta(pos)
return (frontnode.name == meta:get_string("scanname")) or
--
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