enable LuaWorld and LuaUnit, fix needed

engine/CMakeLists.txt

@@ -327,6 +327,8 @@ set (LUA_SRC
 	lua/LuaDevice.cpp
 	lua/LuaWindow.cpp
 	lua/LuaResourcePackage.cpp
+	lua/LuaWorld.cpp
+	lua/LuaUnit.cpp
 )
 
 set (LUA_HEADERS

engine/lua/LuaEnvironment.cpp

@@ -57,8 +57,8 @@ CE_EXPORT int luaopen_libcrown(lua_State* /*L*/)
 	load_accelerometer(*env);
 	load_device(*env);
 	load_resource_package(*env);
-	// load_unit(*env);
-	// load_world(*env);
+	load_unit(*env);
+	load_world(*env);
 
 	return 1;
 }

engine/lua/LuaWorld.cpp

@@ -54,4 +54,4 @@ void load_world(LuaEnvironment& env)
 	env.load_module_function("World", "spawn_unit",			world_spawn_unit);
 }
 
-} // namespace crown
+} // namespace crown