a bit different approach and cl_interp 0.025

src/game/client/c_baseentity.cpp

@@ -433,6 +433,7 @@ BEGIN_RECV_TABLE_NOBASE(C_BaseEntity, DT_BaseEntity)
 	RecvPropDataTable( "AnimTimeMustBeFirst", 0, 0, &REFERENCE_RECV_TABLE(DT_AnimTimeMustBeFirst) ),
 	RecvPropInt( RECVINFO(m_flSimulationTime), 0, RecvProxy_SimulationTime ),
 	RecvPropInt( RECVINFO( m_ubInterpolationFrame ) ),
+	RecvPropInt( RECVINFO( m_bForceNoInterpolate ) ),
 
 	RecvPropVector( RECVINFO_NAME( m_vecNetworkOrigin, m_vecOrigin ) ),
 #if PREDICTION_ERROR_CHECK_LEVEL > 1 
@@ -967,6 +968,7 @@ C_BaseEntity::C_BaseEntity() :
 #endif
 
 	ParticleProp()->Init( this );
+	m_bForceNoInterpolate = false;
 }
 
 
@@ -2994,6 +2996,9 @@ void C_BaseEntity::MoveToLastReceivedPosition( bool force )
 
 bool C_BaseEntity::ShouldInterpolate()
 {
+	if(m_bForceNoInterpolate)
+		return false;
+
 	if ( render->GetViewEntity() == index )
 		return true;
 

src/game/client/c_baseentity.h

@@ -1307,6 +1307,8 @@ public:
 	byte							m_ubInterpolationFrame;
 	byte							m_ubOldInterpolationFrame;
 
+	bool							m_bForceNoInterpolate;
+
 private:
 	// Effects to apply
 	int								m_fEffects;

src/game/client/cdll_bounded_cvars.cpp

@@ -99,7 +99,7 @@ class CBoundedCvar_Interp : public ConVar_ServerBounded
 public:
 	CBoundedCvar_Interp() :
 	  ConVar_ServerBounded( "cl_interp", 
-		  "0.1", 
+		  "0.025", 
 		  FCVAR_USERINFO | FCVAR_NOT_CONNECTED, 
 		  "Sets the interpolation amount (bounded on low side by server interp ratio settings).", true, 0.0f, true, 0.5f )
 	  {

src/game/server/baseentity.cpp

@@ -269,6 +269,7 @@ IMPLEMENT_SERVERCLASS_ST_NOBASE( CBaseEntity, DT_BaseEntity )
 #endif
 
 	SendPropInt		(SENDINFO( m_ubInterpolationFrame ), NOINTERP_PARITY_MAX_BITS, SPROP_UNSIGNED ),
+	SendPropBool		(SENDINFO( m_bForceNoInterpolate )),
 	SendPropModelIndex(SENDINFO(m_nModelIndex)),
 	SendPropDataTable( SENDINFO_DT( m_Collision ), &REFERENCE_SEND_TABLE(DT_CollisionProperty) ),
 	SendPropInt		(SENDINFO(m_nRenderFX),		8, SPROP_UNSIGNED ),

src/game/server/baseentity.h

@@ -814,6 +814,8 @@ public:
 
 	CNetworkVar( int, m_ubInterpolationFrame );
 
+	CNetworkVar( bool, m_bForceNoInterpolate );
+
 	int				m_nLastThinkTick;
 
 #if !defined( NO_ENTITY_PREDICTION )

src/game/server/player.cpp

@@ -594,7 +594,7 @@ CBasePlayer::CBasePlayer( )
 	m_hZoomOwner = NULL;
 
 	m_nUpdateRate = 20;  // cl_updaterate defualt
-	m_fLerpTime = 0.1f; // cl_interp default
+	m_fLerpTime = 0.025f; // cl_interp default
 	m_bPredictWeapons = true;
 	m_bLagCompensation = false;
 	m_flLaggedMovementValue = 1.0f;

src/game/shared/hl2mp/weapon_crossbow.cpp

@@ -176,7 +176,11 @@ void CCrossbowBolt::Spawn( void )
 
 	SetThink( &CCrossbowBolt::BubbleThink );
 	SetNextThink( gpGlobals->curtime + 0.1f );
-	
+
+#ifdef CLIENT_DLL
+	m_bForceNoInterpolate = true;
+#endif
+
 	CreateSprites();
 
 	// Make us glow until we've hit the wall

src/game/shared/hl2mp/weapon_physcannon.cpp

@@ -578,6 +578,9 @@ void CGrabController::AttachEntity( CBasePlayer *pPlayer, CBaseEntity *pEntity,
 	{
 		m_bHasPreferredCarryAngles = false;
 	}
+
+	if(pEntity)
+		pEntity->m_bForceNoInterpolate = true;
 #else
 
 	m_bHasPreferredCarryAngles = false;
@@ -635,6 +638,11 @@ void CGrabController::DetachEntity( bool bClearVelocity )
 		}
 	}
 
+#ifndef CLIENT_DLL
+	if(pEntity)
+		pEntity->m_bForceNoInterpolate = true;
+#endif
+
 	m_attachedEntity = NULL;
 	if ( physenv )
 	{
@@ -1109,7 +1117,7 @@ public:
 
 	CNetworkHandle( CBaseEntity, m_hAttachedObject );
 
-	EHANDLE m_hOldAttachedObject;
+	CNetworkHandle(CBaseEntity, m_hOldAttachedObject );
 
 protected:
 	enum FindObjectResult_t
@@ -1206,7 +1214,7 @@ protected:
 	virtual void	OnDataChanged( DataUpdateType_t type );
 	virtual void	ClientThink( void );
 	
-	void			ManagePredictedObject( void );
+	//void			ManagePredictedObject( void );
 	void			DrawEffects( void );
 	void			GetEffectParameters( EffectType_t effectID, color32 &color, float &scale, IMaterial **pMaterial, Vector &vecAttachment );
 	void			DrawEffectSprite( EffectType_t effectID );
@@ -1261,6 +1269,7 @@ BEGIN_NETWORK_TABLE( CWeaponPhysCannon, DT_WeaponPhysCannon )
 #ifdef CLIENT_DLL
 	RecvPropBool( RECVINFO( m_bActive ) ),
 	RecvPropEHandle( RECVINFO( m_hAttachedObject ) ),
+	RecvPropEHandle( RECVINFO( m_hOldAttachedObject ) ),
 	RecvPropVector( RECVINFO( m_attachedPositionObjectSpace ) ),
 	RecvPropFloat( RECVINFO( m_attachedAnglesPlayerSpace[0] ) ),
 	RecvPropFloat( RECVINFO( m_attachedAnglesPlayerSpace[1] ) ),
@@ -1270,6 +1279,7 @@ BEGIN_NETWORK_TABLE( CWeaponPhysCannon, DT_WeaponPhysCannon )
 #else
 	SendPropBool( SENDINFO( m_bActive ) ),
 	SendPropEHandle( SENDINFO( m_hAttachedObject ) ),
+	SendPropEHandle( SENDINFO( m_hOldAttachedObject ) ),
 	SendPropVector(SENDINFO( m_attachedPositionObjectSpace ), -1, SPROP_COORD),
 	SendPropAngle( SENDINFO_VECTORELEM(m_attachedAnglesPlayerSpace, 0 ), 11 ),
 	SendPropAngle( SENDINFO_VECTORELEM(m_attachedAnglesPlayerSpace, 1 ), 11 ),
@@ -2425,53 +2435,53 @@ void CWeaponPhysCannon::DetachObject( bool playSound, bool wasLaunched )
 }
 
 
-#ifdef CLIENT_DLL
-void CWeaponPhysCannon::ManagePredictedObject( void )
-{
-	CBaseEntity *pAttachedObject = m_hAttachedObject.Get();
-
-	if ( m_hAttachedObject )
-	{
-		// NOTE :This must happen after OnPhysGunPickup because that can change the mass
-		if ( pAttachedObject != GetGrabController().GetAttached() )
-		{
-			IPhysicsObject *pPhysics = pAttachedObject->VPhysicsGetObject();
-
-			if ( pPhysics == NULL )
-			{
-				solid_t tmpSolid;
-				PhysModelParseSolid( tmpSolid, m_hAttachedObject, pAttachedObject->GetModelIndex() );
-
-				pAttachedObject->VPhysicsInitNormal( SOLID_VPHYSICS, 0, false, &tmpSolid );
-			}
-
-			pPhysics = pAttachedObject->VPhysicsGetObject();
-
-			if ( pPhysics )
-			{
-				m_grabController.SetIgnorePitch( false );
-				m_grabController.SetAngleAlignment( 0 );
-
-				GetGrabController().AttachEntity( ToBasePlayer( GetOwner() ), pAttachedObject, pPhysics, false, vec3_origin, false );
-				GetGrabController().m_attachedPositionObjectSpace = m_attachedPositionObjectSpace;
-				GetGrabController().m_attachedAnglesPlayerSpace = m_attachedAnglesPlayerSpace;
-			}
-		}
-	}
-	else
-	{
-		if ( m_hOldAttachedObject && m_hOldAttachedObject->VPhysicsGetObject() )
-		{
-			GetGrabController().DetachEntity( false );
-
-			m_hOldAttachedObject->VPhysicsDestroyObject();
-		}
-	}
-
-	m_hOldAttachedObject = m_hAttachedObject;
-}
-
-#endif
+//#ifdef CLIENT_DLL
+//void CWeaponPhysCannon::ManagePredictedObject( void )
+//{
+//	CBaseEntity *pAttachedObject = m_hAttachedObject.Get();
+//
+//	if ( m_hAttachedObject )
+//	{
+//		// NOTE :This must happen after OnPhysGunPickup because that can change the mass
+//		if ( pAttachedObject != GetGrabController().GetAttached() )
+//		{
+//			IPhysicsObject *pPhysics = pAttachedObject->VPhysicsGetObject();
+//
+//			if ( pPhysics == NULL )
+//			{
+//				solid_t tmpSolid;
+//				PhysModelParseSolid( tmpSolid, m_hAttachedObject, pAttachedObject->GetModelIndex() );
+//
+//				pAttachedObject->VPhysicsInitNormal( SOLID_VPHYSICS, 0, false, &tmpSolid );
+//			}
+//
+//			pPhysics = pAttachedObject->VPhysicsGetObject();
+//
+//			if ( pPhysics )
+//			{
+//				m_grabController.SetIgnorePitch( false );
+//				m_grabController.SetAngleAlignment( 0 );
+//
+//				GetGrabController().AttachEntity( ToBasePlayer( GetOwner() ), pAttachedObject, pPhysics, false, vec3_origin, false );
+//				GetGrabController().m_attachedPositionObjectSpace = m_attachedPositionObjectSpace;
+//				GetGrabController().m_attachedAnglesPlayerSpace = m_attachedAnglesPlayerSpace;
+//			}
+//		}
+//	}
+//	else
+//	{
+//		if ( m_hOldAttachedObject && m_hOldAttachedObject->VPhysicsGetObject() )
+//		{
+//			GetGrabController().DetachEntity( false );
+//
+//			m_hOldAttachedObject->VPhysicsDestroyObject();
+//		}
+//	}
+//
+//	m_hOldAttachedObject = m_hAttachedObject;
+//}
+//
+//#endif
 
 #ifdef CLIENT_DLL
 
@@ -2524,10 +2534,16 @@ void CWeaponPhysCannon::ItemPreFrame()
 	BaseClass::ItemPreFrame();
 
 #ifdef CLIENT_DLL
-	C_BasePlayer *localplayer = C_BasePlayer::GetLocalPlayer();
+	//C_BasePlayer *localplayer = C_BasePlayer::GetLocalPlayer();
 
-	if ( localplayer && !localplayer->IsObserver() )
-		ManagePredictedObject();
+	//if ( localplayer && !localplayer->IsObserver() )
+	//	ManagePredictedObject();
+
+	if(m_hAttachedObject)
+		m_hAttachedObject.Get()->m_bForceNoInterpolate = true;
+	else
+		if(m_hOldAttachedObject)
+			m_hOldAttachedObject.Get()->m_bForceNoInterpolate = false;
 #endif
 
 	// Update the object if the weapon is switched on.

src/game/shared/hl2mp/weapon_rpg.cpp

@@ -147,6 +147,9 @@ class CWeaponRPG;
 CMissile::CMissile()
 {
 	m_hRocketTrail = NULL;
+#ifdef CLIENT_DLL
+	m_bForceNoInterpolate = true;
+#endif
 }
 
 CMissile::~CMissile()
@@ -2123,6 +2126,8 @@ CLaserDot::CLaserDot( void )
 	m_bIsOn = true;
 #ifndef CLIENT_DLL
 	g_LaserDotList.Insert( this );
+#else
+	m_bForceNoInterpolate = true;
 #endif
 }