From 29ccb982e696a04212a601c33637117fc5c6ba20 Mon Sep 17 00:00:00 2001
From: Kayne Ruse <ratstail91@yahoo.com.au>
Date: Fri, 27 Mar 2015 20:29:16 +1100
Subject: [PATCH] Created userdata metatable

---
 rsc/scripts/setup_server.lua |  9 ++++++++-
 server/server_logic.cpp      | 16 ++++++++++++++++
 server/userdata.cpp          | 29 +++++++++++++++++++++++++++++
 server/userdata.hpp          | 31 +++++++++++++++++++++++++++++++
 4 files changed, 84 insertions(+), 1 deletion(-)
 create mode 100644 server/userdata.cpp
 create mode 100644 server/userdata.hpp

diff --git a/rsc/scripts/setup_server.lua b/rsc/scripts/setup_server.lua
index 02f5059..741a239 100644
--- a/rsc/scripts/setup_server.lua
+++ b/rsc/scripts/setup_server.lua
@@ -15,7 +15,10 @@ roomManagerAPI.SetOnCreate(function(room, index)
 
 	roomAPI.SetOnTick(room, function(room)
 		roomAPI.ForEachCharacter(room, function(character)
-			--
+			--testing the metatables
+			local meta = getmetatable(character)
+			print("", "userdata metatable: ", meta)
+			print(character["trying"])
 		end)
 	end)
 end)
@@ -33,4 +36,8 @@ roomAPI.Initialize(underworld, mapSaver.Load, mapSaver.Save, mapMaker.DebugGrass
 --call the monstrosity
 doorUtility.createDoorPair("pair 1", overworld, 0, -64, underworld, 0, 0)
 
+--testing the metatables
+local meta = getmetatable(underworld)
+print("", "userdata metatable: ", meta)
+
 print("Finished the lua script")
diff --git a/server/server_logic.cpp b/server/server_logic.cpp
index 8a0bd24..57f7d2a 100644
--- a/server/server_logic.cpp
+++ b/server/server_logic.cpp
@@ -23,6 +23,7 @@
 
 //utility functions
 #include "sql_tools.hpp"
+#include "userdata.hpp"
 
 //std & STL
 #include <stdexcept>
@@ -78,6 +79,21 @@ void ServerApplication::Init(int argc, char* argv[]) {
 
 	std::cout << "Initialized lua" << std::endl;
 
+	//create the userdata metatable
+	lua_pushlightuserdata(luaState, nullptr); //userdata
+	lua_createtable(luaState, 1, 0); //table
+
+	//__index
+	lua_pushstring(luaState, "__index");
+	lua_pushcfunction(luaState, userdataIndex);
+	lua_settable(luaState, -3);
+
+	//set in the object
+	lua_setmetatable(luaState, -2); //set the metatable for userdata
+	lua_pop(luaState, 1); //pop the userdata
+
+	std::cout << "\tCreated userdata metatable" << std::endl;
+
 	//append config["dir.scripts"] to the module path
 	if (config["dir.scripts"].size() > 0) {
 		//get the original path
diff --git a/server/userdata.cpp b/server/userdata.cpp
new file mode 100644
index 0000000..9e0bcb9
--- /dev/null
+++ b/server/userdata.cpp
@@ -0,0 +1,29 @@
+/* Copyright: (c) Kayne Ruse 2013-2015
+ * 
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+*/
+#include "userdata.hpp"
+
+#include <iostream>
+
+int userdataIndex(lua_State* L) {
+	std::cout << "WARNING: userdataIndex called" << std::endl;
+	return 0;
+}
\ No newline at end of file
diff --git a/server/userdata.hpp b/server/userdata.hpp
new file mode 100644
index 0000000..98a6d87
--- /dev/null
+++ b/server/userdata.hpp
@@ -0,0 +1,31 @@
+/* Copyright: (c) Kayne Ruse 2013-2015
+ * 
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+*/
+#ifndef METATABLES_HPP_
+#define METATABLES_HPP_
+
+#include "lua.hpp"
+
+#define TORTUGA_USERDATA_NAME "userdata"
+
+int userdataIndex(lua_State* L);
+
+#endif