How to retrieve the actual C++ object pointer (void*) from a userdata (LuaRef)?

[3lyrion]

auto raw = static_cast<void*>(itemPtr); // 0x0000022382deb400 

LuaRef ref(L, itemPtr);
ref.push();
auto ptr = *static_cast<void* const*>(lua_topointer(L, -1)); // 0x00007ff63c8d6e58 ❌

sol::stack::push(L, itemPtr);
auto object = sol::stack::pop<sol::object>(L);
auto ptr = *static_cast<void* const*>(object.pointer()); // 0x0000022382deb400 ✅

This is needed when the real type of an object is unknown

[kunitoki]

How are you registering your type ? Is this a class ?

[3lyrion]

Yes, it is a class. I need to know the real address of an object because my event system uses an object's address (hashed) as the entity key. The hash value must remain stable, which makes LuaRef::hash unsuitable for my use case

[kunitoki]

I'm adding LuaRef::getPointer able to return the inner pointer to a userdata

[kunitoki]

#259

[3lyrion]

Thanks a lot