diff --git a/ivp b/ivp
index 82849306..e83263d0 160000
--- a/ivp
+++ b/ivp
@@ -1 +1 @@
-Subproject commit 82849306f728db57868d7a82fe7bcff333eb468c
+Subproject commit e83263d03e0f46f69c94d1881d76f65bbdc03487
diff --git a/vphysics/physics_object.cpp b/vphysics/physics_object.cpp
index c5838b9f..7693be3b 100644
--- a/vphysics/physics_object.cpp
+++ b/vphysics/physics_object.cpp
@@ -177,6 +177,11 @@ void CPhysicsObject::Wake( void )
 	m_pObject->ensure_in_simulation();
 }
 
+void CPhysicsObject::WakeNow( void )
+{
+	m_pObject->ensure_in_simulation_now();
+}
+
 // supported
 void CPhysicsObject::Sleep( void )
 {
@@ -643,7 +648,6 @@ void CPhysicsObject::SetInertia( const Vector &inertia )
 	ri.k[2] = IVP_Inline_Math::fabsd(ri.k[2]);
 
 	if( ri.k[0] > 1e14f ) ri.k[0] = 1e14f; if( ri.k[1] > 1e14f ) ri.k[1] = 1e14f; if( ri.k[2] > 1e14f ) ri.k[2] = 1e14f;
-	if( ri.k[0] <= 0 ) ri.k[0] = 1.f; if( ri.k[1] <= 0 ) ri.k[1] = 1.f; if( ri.k[2] <= 0 ) ri.k[2] = 1.f;
 
 	m_pObject->get_core()->set_rotation_inertia( &ri );
 }
@@ -1092,7 +1096,6 @@ void GetWorldCoordFromSynapse( IVP_Synapse_Friction *pfriction, IVP_U_Point &wor
 	world.set(pfriction->get_contact_point()->get_contact_point_ws());
 }
 
-
 bool CPhysicsObject::GetContactPoint( Vector *contactPoint, IPhysicsObject **contactObject ) const
 {
 	IVP_Synapse_Friction *pfriction = m_pObject->get_first_friction_synapse();
diff --git a/vphysics/physics_object.h b/vphysics/physics_object.h
index a1c6f5e1..8f672dd6 100644
--- a/vphysics/physics_object.h
+++ b/vphysics/physics_object.h
@@ -112,6 +112,7 @@ public:
 	unsigned short	GetGameIndex( void ) const;
 
 	void			Wake();
+	void			WakeNow();
 	void			Sleep();
 	void			RecheckCollisionFilter();
 	void			RecheckContactPoints();
diff --git a/vphysics/vcollide_parse.cpp b/vphysics/vcollide_parse.cpp
index 527e1865..f480b76c 100644
--- a/vphysics/vcollide_parse.cpp
+++ b/vphysics/vcollide_parse.cpp
@@ -175,12 +175,7 @@ void CVPhysicsParse::ParseSolid( solid_t *pSolid, IVPhysicsKeyHandler *unknownKe
 		else if ( !Q_stricmp( key, "inertia" ) )
 		{
 			float inertia = atof(value);
-			if( inertia > 1e14f )
-				pSolid->params.inertia = 1e14f;
-			else if( inertia <= 0 )
-				pSolid->params.inertia = 1.f;
-			else
-				pSolid->params.inertia = inertia;
+			pSolid->params.inertia = (inertia > 1e14f) ? 1e14f : inertia;
 		}
 		else if ( !Q_stricmp( key, "damping" ) )
 		{
@@ -475,12 +470,7 @@ void CVPhysicsParse::ParseVehicleWheel( vehicle_wheelparams_t &wheel )
 		else if ( !Q_stricmp( key, "inertia" ) )
 		{
 			float inertia = atof(value);
-			if( inertia > 1e14f )
-				wheel.inertia = 1e14f;
-			else if( inertia <= 0 )
-				wheel.inertia = 1.f;
-			else
-				wheel.inertia = inertia;
+			wheel.inertia = (inertia > 1e14f) ? 1e14f : inertia;
 		}
 		else if ( !Q_stricmp( key, "damping" ) )
 		{