From 56cbfc2c851c3fb664baa9ac0db7182a23f72bbf Mon Sep 17 00:00:00 2001
From: orwell96 <mono96.mml@gmail.com>
Date: Tue, 21 Feb 2017 11:02:25 +0100
Subject: [PATCH] Only place rails on solid nodes

---
 advtrains/advtrains/trackplacer.lua | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/advtrains/advtrains/trackplacer.lua b/advtrains/advtrains/trackplacer.lua
index 9fee011..96081a8 100644
--- a/advtrains/advtrains/trackplacer.lua
+++ b/advtrains/advtrains/trackplacer.lua
@@ -192,7 +192,7 @@ function tp.register_track_placer(nnprefix, imgprefix, dispname)
 			end
 			if pointed_thing.type=="node" then
 				local pos=pointed_thing.above
-				local upos=pointed_thing.under
+				local upos=vector.subtract(pointed_thing.above, {x=0, y=1, z=0})
 				if minetest.is_protected(pos,name) and minetest.is_protected(upos,name) then
 				   return itemstack
 				end