Revert change to node pos hashes, and rewrite trackdb to use individual coordinates

The precision of integers was not sufficient for saving pos node hashes in most cases, leading to strange bugs.
This fixes broken ATC rails, broken LuaAutomation stuff and trackdb on Windows.
Probably also fixes trains randomly stopping.

1 files changed, 8 insertions, 6 deletions

diff --git a/advtrains/advtrains_luaautomation/active_common.lua b/advtrains/advtrains_luaautomation/active_common.lua
index 474838e..50a5051 100644
--- a/advtrains/advtrains_luaautomation/active_common.lua
+++ b/advtrains/advtrains_luaautomation/active_common.lua
@@ -3,7 +3,9 @@
 local ac = {nodes={}}
 
 function ac.load(data)
-	ac.nodes=data and data.nodes or {}
+	if data then
+		ac.nodes=data.nodes
+	end
 end
 function ac.save()
 	return {nodes = ac.nodes}
@@ -14,7 +16,7 @@ function ac.after_place_node(pos, player)
 	local meta=minetest.get_meta(pos)
 	meta:set_string("formspec", ac.getform(pos, meta))
 	meta:set_string("infotext", "LuaAutomation component, unconfigured.")
-	local ph=minetest.hash_node_position(pos)
+	local ph=minetest.pos_to_string(pos)
 	--just get first available key!
 	for en,_ in pairs(atlatc.envs) do
 		ac.nodes[ph]={env=en}
@@ -25,7 +27,7 @@ function ac.getform(pos, meta_p)
 	local meta = meta_p or minetest.get_meta(pos)
 	local envs_asvalues={}
 	
-	local ph=minetest.hash_node_position(pos)
+	local ph=minetest.pos_to_string(pos)
 	local nodetbl = ac.nodes[ph]
 	local env, code, err = nil, "", ""
 	if nodetbl then
@@ -49,7 +51,7 @@ end
 function ac.after_dig_node(pos, node, player)
 	advtrains.invalidate_all_paths()
 	advtrains.ndb.clear(pos)
-	local ph=minetest.hash_node_position(pos)
+	local ph=minetest.pos_to_string(pos)
 	ac.nodes[ph]=nil
 end
 
@@ -59,7 +61,7 @@ function ac.on_receive_fields(pos, formname, fields, player)
 	end
 	
 	local meta=minetest.get_meta(pos)
-	local ph=minetest.hash_node_position(pos)
+	local ph=minetest.pos_to_string(pos)
 	local nodetbl = ac.nodes[ph] or {}
 	--if fields.quit then return end
 	if fields.env then
@@ -85,7 +87,7 @@ function ac.on_receive_fields(pos, formname, fields, player)
 end
 
 function ac.run_in_env(pos, evtdata, customfct_p)
-	local ph=minetest.hash_node_position(pos)
+	local ph=minetest.pos_to_string(pos)
 	local nodetbl = ac.nodes[ph] or {}
 	
 	local meta