Ensure that all actions are compared to fixed point in time (ie. world update start)

src/server/game/Handlers/MiscHandler.cpp

@@ -23,6 +23,7 @@
 #include "Opcodes.h"
 #include "Log.h"
 #include "Player.h"
+#include "GameTime.h"
 #include "GossipDef.h"
 #include "World.h"
 #include "ObjectMgr.h"
@@ -1371,7 +1372,7 @@ void WorldSession::HandleTimeSyncResp(WorldPacket& recvData)
 
     TC_LOG_DEBUG("network", "Time sync received: counter %u, client ticks %u, time since last sync %u", counter, clientTicks, clientTicks - _player->m_timeSyncClient);
 
-    uint32 ourTicks = clientTicks + (getMSTime() - _player->m_timeSyncServer);
+    uint32 ourTicks = clientTicks + (GameTime::GetGameTimeMS() - _player->m_timeSyncServer);
 
     // diff should be small
     TC_LOG_DEBUG("network", "Our ticks: %u, diff %u, latency %u", ourTicks, ourTicks - clientTicks, GetLatency());