GetWeaponName.cc

struct Weapon {
	void* head;
	void* tail;
};
int getweaponname(lua_State* L) {
	int*** userdata = (int***)lua_touserdata(L, 1);
	luaL_argcheck(L, userdata != NULL, 1, "`pawn' expected");
	size_t idx = luaL_checkint(L, 2);

	// we go userdata -> luabind data -> pawn struct -> weapon vec
	void* weapon_vec_addr = &userdata[0][2][1];

	std::vector<Weapon>* weapon_vector = static_cast<std::vector<Weapon>*>(weapon_vec_addr);

	if (idx >= weapon_vector->size()) {
		lua_pushnil(L);
		return 1;
	}
	void* weapon_addr = (*weapon_vector)[idx].tail;
	void* string_addr = (void*)((int)weapon_addr + 0xc0);

	std::basic_string<char>* name = static_cast<std::basic_string<char>*>(string_addr);
	lua_pushstring(L, name->c_str());
	return 1;
}