Fix dedicated steam activation requestexperience crash

src/game/server/gameinterface.cpp

@@ -111,6 +111,7 @@
 #include "missionchooser/iasw_mission_chooser_source.h"
 #include "matchmaking/swarm/imatchext_swarm.h"
 #include "asw_gamerules.h"
+#include "asw_player.h"
 #include "asw_util_shared.h"
 #include "iconsistency.h"
 #endif
@@ -613,6 +614,16 @@ static bool InitGameSystems( CreateInterfaceFn appSystemFactory )
 
 CServerGameDLL g_ServerGameDLL;
 EXPOSE_SINGLE_INTERFACE_GLOBALVAR(CServerGameDLL, IServerGameDLL, INTERFACEVERSION_SERVERGAMEDLL, g_ServerGameDLL);
+// Crash fix/hardening: the engine can call into game code during lobby soft-close -> restart
+// before Steam is fully activated for the new session. Track activation so code can safely
+// skip Steam calls until the engine signals readiness.
+static bool g_bRDSteamAPIActivated = false;
+static float g_flNextDeferredSteamStatsRequestTime = 0.0f;
+
+bool RD_IsSteamAPIActivated()
+{
+	return g_bRDSteamAPIActivated;
+}
 
 bool CServerGameDLL::DLLInit( CreateInterfaceFn appSystemFactory, 
 		CreateInterfaceFn physicsFactory, CreateInterfaceFn fileSystemFactory, 
@@ -1064,6 +1075,7 @@ bool CServerGameDLL::SupportsSaveRestore()
 bool CServerGameDLL::LevelInit( const char *pMapName, char const *pMapEntities, char const *pOldLevel, char const *pLandmarkName, bool loadGame, bool background )
 {
 	VPROF("CServerGameDLL::LevelInit");
+	g_bRDSteamAPIActivated = false;
 	ResetWindspeed();
 	UpdateChapterRestrictions( pMapName );
 
@@ -1266,6 +1278,11 @@ void CServerGameDLL::ServerActivate( edict_t *pEdictList, int edictCount, int cl
 void CServerGameDLL::GameServerSteamAPIActivated( void )
 {
 	// the Steam API pointers used to be initialized here, but that happens automatically now.
+	// Crash fix/hardening: mark Steam as activated so code can safely call Steam APIs.
+	g_bRDSteamAPIActivated = true;
+
+	// If any players tried to request XP before Steam activation (restart/join window), retry now.
+	g_flNextDeferredSteamStatsRequestTime = 0.0f;
 }
 
 //-----------------------------------------------------------------------------
@@ -1281,6 +1298,42 @@ void CServerGameDLL::GameFrame( bool simulating )
 	if ( g_InRestore )
 		return;
 
+	// Crash fix/hardening: if we deferred any Steam stats requests because Steam wasn't activated
+	// yet (e.g. lobby soft-close -> restart), retry them once Steam is ready.
+	static const float k_flDeferredSteamStatsRequestTimeout = 30.0f;
+	if ( g_bRDSteamAPIActivated && gpGlobals && gpGlobals->curtime >= g_flNextDeferredSteamStatsRequestTime )
+	{
+		g_flNextDeferredSteamStatsRequestTime = gpGlobals->curtime + 1.0f;
+		for ( int i = 1; i <= gpGlobals->maxClients; i++ )
+		{
+			CASW_Player *pPlayer = ToASW_Player( UTIL_PlayerByIndex( i ) );
+			if ( !pPlayer )
+				continue;
+
+			if ( pPlayer->m_bDeferredSteamStatsRequest && !pPlayer->m_bPendingSteamStats )
+			{
+				if ( pPlayer->m_flDeferredSteamStatsRequestStart < 0.0f )
+				{
+					pPlayer->m_flDeferredSteamStatsRequestStart = gpGlobals->curtime;
+				}
+
+				if ( ( gpGlobals->curtime - pPlayer->m_flDeferredSteamStatsRequestStart ) > k_flDeferredSteamStatsRequestTimeout )
+				{
+					pPlayer->m_bDeferredSteamStatsRequest = false;
+					pPlayer->m_flDeferredSteamStatsRequestStart = -1.0f;
+					continue;
+				}
+
+				pPlayer->RequestExperience();
+				if ( pPlayer->m_bPendingSteamStats )
+				{
+					pPlayer->m_bDeferredSteamStatsRequest = false;
+					pPlayer->m_flDeferredSteamStatsRequestStart = -1.0f;
+				}
+			}
+		}
+	}
+
 #ifndef NO_STEAM
 	// All the calls to us from the engine prior to gameframe (like LevelInit & ServerActivate)
 	// are done before the engine has got the Steam API connected, so we have to wait until now to connect ourselves.
@@ -1518,6 +1571,7 @@ void CServerGameDLL::LevelShutdown( void )
 	MDLCACHE_CRITICAL_SECTION();
 	IGameSystem::LevelShutdownPreEntityAllSystems();
 
+	g_bRDSteamAPIActivated = false;
 	// YWB:
 	// This entity pointer is going away now and is corrupting memory on level transitions/restarts
 	CSoundEnt::ShutdownSoundEnt();

src/game/server/gameinterface.h

@@ -1,4 +1,4 @@
-//========= Copyright � 1996-2005, Valve Corporation, All rights reserved. ============//
+//========= Copyright � 1996-2005, Valve Corporation, All rights reserved. ============//
 //
 // Purpose: Expose things from GameInterface.cpp. Mostly the engine interfaces.
 //
@@ -211,6 +211,11 @@ class CMapLoadEntityFilter : public IMapEntityFilter
 
 bool IsEngineThreaded();
 
+// Crash fix support: during lobby soft-close -> restart, the engine can call into game code
+// (including PlayerSpawn) before Steam is fully activated for the new session.
+// This helper lets server-side code skip Steam calls until GameServerSteamAPIActivated fires.
+bool RD_IsSteamAPIActivated();
+
 class CServerGameTags : public IServerGameTags
 {
 public:

src/game/server/swarm/asw_player.cpp

@@ -407,6 +407,8 @@ CASW_Player::CASW_Player()
 
 	m_bPendingSteamStats = false;
 	m_flPendingSteamStatsStart = 0.0f;
+	m_bDeferredSteamStatsRequest = false;
+	m_flDeferredSteamStatsRequestStart = -1.0f;
 
 	m_bWelcomed = false;
 

src/game/server/swarm/asw_player.h

@@ -278,6 +278,8 @@ class CASW_Player : public CBaseMultiplayerPlayer, public IASWPlayerAnimStateHel
 	bool m_bHasAwardedXP;
 	bool m_bPendingSteamStats;
 	float m_flPendingSteamStatsStart;
+	bool m_bDeferredSteamStatsRequest;
+	float m_flDeferredSteamStatsRequestStart;
 	bool m_bSentPromotedMessage;
 
 	// static inventory (medals)

src/game/shared/swarm/asw_player_experience.cpp

@@ -467,6 +467,16 @@ void CASW_Player::RequestExperience()
 #else
 	if ( engine->IsDedicatedServer() )
 	{
+		// Crash fix/hardening: during lobby soft-close -> restart, PlayerSpawn can run before
+		// Steam is activated for the new session. Avoid calling RequestUserStats until the
+		// engine signals Steam readiness (GameServerSteamAPIActivated).
+		if ( !RD_IsSteamAPIActivated() )
+		{
+			// Defer rather than skip: once Steam is activated, game code will retry this request.
+			m_bDeferredSteamStatsRequest = true;
+			return;
+		}
+
 		Assert( SteamGameServerStats() );
 		if ( SteamGameServerStats() )
 		{