[Server] Turn readWorldstate and writeWorldstate into static variables

apps/openmw-mp/Script/Functions/Worldstate.cpp

@@ -1,5 +1,4 @@
 #include <components/openmw-mp/NetworkMessages.hpp>
-#include <components/openmw-mp/Base/BaseWorldstate.hpp>
 
 #include <apps/openmw-mp/Networking.hpp>
 #include <apps/openmw-mp/Player.hpp>
@@ -11,8 +10,8 @@
 using namespace std;
 using namespace mwmp;
 
-BaseWorldstate *readWorldstate;
-BaseWorldstate writeWorldstate;
+BaseWorldstate *WorldstateFunctions::readWorldstate;
+BaseWorldstate WorldstateFunctions::writeWorldstate;
 
 void WorldstateFunctions::ReadReceivedWorldstate() noexcept
 {

apps/openmw-mp/Script/Functions/Worldstate.hpp

@@ -1,6 +1,7 @@
 #ifndef OPENMW_WORLDSTATEAPI_HPP
 #define OPENMW_WORLDSTATEAPI_HPP
 
+#include <components/openmw-mp/Base/BaseWorldstate.hpp>
 #include "../Types.hpp"
 
 #define WORLDSTATEAPI \
@@ -61,6 +62,9 @@ class WorldstateFunctions
 {
 public:
 
+    static mwmp::BaseWorldstate *readWorldstate;
+    static mwmp::BaseWorldstate writeWorldstate;
+
     /**
     * \brief Use the last worldstate received by the server as the one being read.
     *