From a064cc06a5a1d0a7df224b71a6a2ad7df87c693d Mon Sep 17 00:00:00 2001
From: minermoder27 <minermoder27@gmail.com>
Date: Fri, 21 Mar 2014 07:43:00 +1300
Subject: [PATCH] Fix cart stopping bug

---
 functions.lua   |  6 ++++++
 voxelgetter.lua | 16 ++++++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 voxelgetter.lua

diff --git a/functions.lua b/functions.lua
index 8a7da47..73df96b 100644
--- a/functions.lua
+++ b/functions.lua
@@ -5,6 +5,8 @@
 
 cart_func = {}
 
+dofile(minetest.get_modpath("carts").."/voxelgetter.lua")
+
 function cart_func:get_sign(z)
 	if z == 0 then
 		return 0
@@ -25,6 +27,10 @@ end
 
 function cart_func:is_rail(p)
 	local nn = minetest.env:get_node(p).name
+	if nn=="ignore" then
+		print("oops")
+		nn=cart_func:get_content_voxel(p)
+	end
 	return minetest.get_item_group(nn, "rail") ~= 0
 end
 
diff --git a/voxelgetter.lua b/voxelgetter.lua
new file mode 100644
index 0000000..df7c7f8
--- /dev/null
+++ b/voxelgetter.lua
@@ -0,0 +1,16 @@
+function cart_func:get_content_voxel(pos)
+	local t1 = os.clock()
+	local vm = minetest.get_voxel_manip()
+	local pos1, pos2 = vm:read_from_map(vector.add(pos, {x=-1,y=-1,z=-1}),vector.add(pos, {x=1,y=1,z=1}))
+	local a = VoxelArea:new{
+		MinEdge=pos1,
+		MaxEdge=pos2,
+	}
+	 
+	local data = vm:get_data()
+	local vi = a:indexp(pos)
+	local railid = data[vi]
+	local real_name = minetest.get_name_from_content_id(railid)
+	print(string.format("voxel-ing rail: elapsed time: %.2fms", (os.clock() - t1) * 1000))
+	return real_name
+end