Updated the SDK with the latest code from the TF and HL2 branches.

mp/src/game/client/c_baseentity.h

@@ -58,6 +58,7 @@ class C_BaseCombatCharacter;
 class CEntityMapData;
 class ConVar;
 class CDmgAccumulator;
+class IHasAttributes;
 
 struct CSoundParameters;
 
@@ -335,6 +336,7 @@ public:
 	// save out interpolated values
 	virtual void					PreDataUpdate( DataUpdateType_t updateType );
 	virtual void					PostDataUpdate( DataUpdateType_t updateType );
+	virtual void					OnDataUnchangedInPVS();
 
 	virtual void					ValidateModelIndex( void );
 
@@ -516,6 +518,7 @@ public:
 
 	// Used when the collision prop is told to ask game code for the world-space surrounding box
 	virtual void					ComputeWorldSpaceSurroundingBox( Vector *pVecWorldMins, Vector *pVecWorldMaxs );
+	virtual float						GetHealthBarHeightOffset() const { return 0.f; }
 
 	// Returns the entity-to-world transform
 	matrix3x4_t						&EntityToWorldTransform();
@@ -686,7 +689,7 @@ public:
 
 	virtual bool					ShouldDraw();
 	inline	bool					IsVisible() const { return m_hRender != INVALID_CLIENT_RENDER_HANDLE; }
-			void					UpdateVisibility();
+	virtual void					UpdateVisibility();
 	
 	// Returns true if the entity changes its position every frame on the server but it doesn't
 	// set animtime. In that case, the client returns true here so it copies the server time to
@@ -743,7 +746,8 @@ public:
 	virtual void					SetHealth(int iHealth) {}
 	virtual int						GetHealth() const { return 0; }
 	virtual int						GetMaxHealth() const { return 1; }
-	virtual bool					IsVisibleToTargetID( void ) { return false; }
+	virtual bool					IsVisibleToTargetID( void ) const { return false; }
+	virtual bool					IsHealthBarVisible( void ) const { return false; }
 
 	// Returns the health fraction
 	float							HealthFraction() const;
@@ -1172,7 +1176,17 @@ public:
 	// Sets the origin + angles to match the last position received
 	void MoveToLastReceivedPosition( bool force = false );
 
+	// Return the IHasAttributes interface for this base entity. Removes the need for:
+	//	dynamic_cast< IHasAttributes * >( pEntity );
+	// Which is remarkably slow.
+	// GetAttribInterface( CBaseEntity *pEntity ) in attribute_manager.h uses
+	//  this function, tests for NULL, and Asserts m_pAttributes == dynamic_cast.
+	inline IHasAttributes *GetHasAttributesInterfacePtr() const { return m_pAttributes; }
+
 protected:
+	// NOTE: m_pAttributes needs to be set in the leaf class constructor.
+	IHasAttributes *m_pAttributes;
+
 	// Only meant to be called from subclasses
 	void DestroyModelInstance();