perf(init): lazily load parsed data for game DLL when on a listen server

during startup, the particles manifest and item schema were being parsed
in both the server DLL and client DLL on startup. this greatly delays
a player's ability quickly launch the game and queue into a match.

so, we can instead just skip initializing for server DLL until we need the manifests
at map load. particles are already parsed specifically for the map at level init,
and pending item schema updates from the GC are also initialized at level init,
so this should be a fine change. it also shouldn't touch the dedicated server path.

Author: mastercoms

src/game/server/gameinterface.cpp

@@ -565,6 +565,8 @@ EXPOSE_SINGLE_INTERFACE_GLOBALVAR(CServerGameDLL, IServerGameDLL, INTERFACEVERSI
 // When bumping the version to this interface, check that our assumption is still valid and expose the older version in the same way
 COMPILE_TIME_ASSERT( INTERFACEVERSION_SERVERGAMEDLL_INT == 10 );
 
+static bool bParsedParticles = false;
+
 bool CServerGameDLL::DLLInit( CreateInterfaceFn appSystemFactory, 
 		CreateInterfaceFn physicsFactory, CreateInterfaceFn fileSystemFactory, 
 		CGlobalVars *pGlobals)
@@ -727,7 +729,11 @@ bool CServerGameDLL::DLLInit( CreateInterfaceFn appSystemFactory,
 	InvalidateQueryCache();
 
 	// Parse the particle manifest file & register the effects within it
-	ParseParticleEffects( false, false );
+	if ( engine->IsDedicatedServer() )
+	{
+		ParseParticleEffects( false, false );
+		bParsedParticles = true;
+	}
 
 	// try to get debug overlay, may be NULL if on HLDS
 	debugoverlay = (IVDebugOverlay *)appSystemFactory( VDEBUG_OVERLAY_INTERFACE_VERSION, NULL );
@@ -958,6 +964,11 @@ bool CServerGameDLL::LevelInit( const char *pMapName, char const *pMapEntities,
 	if ( pItemSchema )
 	{
 		pItemSchema->BInitFromDelayedBuffer();
+		// First valid class must be non-zero if we have a valid schema
+		if ( pItemSchema->GetFirstValidClass() == 0 )
+		{
+			InventoryManager()->InitializeInventory();
+		}
 	}
 #endif // USES_ECON_ITEMS
 
@@ -970,6 +981,12 @@ bool CServerGameDLL::LevelInit( const char *pMapName, char const *pMapEntities,
 		UpdateRichPresence();
 	}
 
+	if ( !bParsedParticles )
+	{
+		ParseParticleEffects( false, false );
+		bParsedParticles = true;
+	}
+
 	//Tony; parse custom manifest if exists!
 	ParseParticleEffectsMap( pMapName, false );
 

src/game/shared/econ/econ_item_inventory.cpp

@@ -303,6 +303,16 @@ bool CInventoryManager::Init( void )
 // Purpose: 
 //-----------------------------------------------------------------------------
 void CInventoryManager::PostInit( void )
+{
+#ifdef GAME_DLL
+	if ( engine->IsDedicatedServer() )
+#endif
+	{
+		InitializeInventory();
+	}
+}
+
+void CInventoryManager::InitializeInventory()
 {
 	// Initialize the item system.
 	ItemSystem()->Init();
@@ -443,7 +453,6 @@ void CInventoryManager::LevelShutdownPostEntity( void )
 	ItemSystem()->ResetAttribStringCache();
 }
 
-
 //-----------------------------------------------------------------------------
 // Purpose: Lets the client know that we're now connected to the GC
 //-----------------------------------------------------------------------------

src/game/shared/econ/econ_item_inventory.h

@@ -216,6 +216,8 @@ class CInventoryManager : public CAutoGameSystemPerFrame
 	virtual void LevelInitPreEntity( void ) OVERRIDE;
 	virtual void LevelShutdownPostEntity( void ) OVERRIDE;
 
+	virtual void InitializeInventory( void );
+
 #ifdef CLIENT_DLL
 	// Gets called each frame
 	virtual void Update( float frametime ) OVERRIDE;

src/game/shared/tf/tf_item_inventory.cpp

@@ -220,6 +220,11 @@ CTFInventoryManager::~CTFInventoryManager( void )
 void CTFInventoryManager::PostInit( void )
 {
 	BaseClass::PostInit();
+}
+
+void CTFInventoryManager::InitializeInventory()
+{
+	BaseClass::InitializeInventory();
 	GenerateBaseItems();
 }
 

src/game/shared/tf/tf_item_inventory.h

@@ -150,6 +150,7 @@ class CTFInventoryManager : public CInventoryManager
 	~CTFInventoryManager();
 
 	virtual void		PostInit( void );
+	virtual void		InitializeInventory();
 
 #ifdef CLIENT_DLL
 	virtual CPlayerInventory *GeneratePlayerInventoryObject() const { return new CTFPlayerInventory; }