Add lua binding for gameObject globalVariable

apps/openmw/mwlua/objectbindings.cpp

@@ -211,6 +211,13 @@ namespace MWLua
             objectT["isValid"] = [](const ObjectT& o) { return !o.ptrOrEmpty().isEmpty(); };
             objectT["recordId"] = sol::readonly_property(
                 [](const ObjectT& o) -> std::string { return o.ptr().getCellRef().getRefId().serializeText(); });
+            objectT["globalVariable"] = sol::readonly_property([](const ObjectT& o) -> sol::optional<std::string> {
+                std::string globalVariable = o.ptr().getCellRef().getGlobalVariable();
+                if (globalVariable.empty())
+                    return sol::nullopt;
+                else
+                    return ESM::RefId::stringRefId(globalVariable).serializeText();
+            });
             objectT["cell"] = sol::readonly_property([](const ObjectT& o) -> sol::optional<Cell<ObjectT>> {
                 const MWWorld::Ptr& ptr = o.ptr();
                 MWWorld::WorldModel* wm = MWBase::Environment::get().getWorldModel();

files/lua_api/openmw/core.lua

@@ -167,6 +167,7 @@
 -- @field #any type Type of the object (one of the tables from the package @{openmw.types#types}).
 -- @field #number count Count (>1 means a stack of objects).
 -- @field #string recordId Returns record ID of the object in lowercase.
+-- @field #string globalVariable Global Variable associated with this object(read only).
 
 ---
 -- Does the object still exist and is available.