game(hl1): fix UTIL_DropToFloor

game/server/ai_basenpc.cpp

@@ -6560,12 +6560,6 @@ float CAI_BaseNPC::ThrowLimit(	const Vector &vecStart,
 //-----------------------------------------------------------------------------
 void CAI_BaseNPC::SetupVPhysicsHull()
 {
-	if( GetModelPtr() == NULL )
-	{
-		UTIL_Remove( this );
-		return;
-	}
-
 	if ( GetMoveType() == MOVETYPE_VPHYSICS || GetMoveType() == MOVETYPE_NONE )
 		return;
 

game/server/func_break.cpp

@@ -1250,10 +1250,9 @@ void CPushable::Spawn( void )
 		CreateVPhysics();
 	}
 
-// nillerusr: VALVEWHY?
-#if 0 //def HL1_DLL
+#ifdef HL1_DLL
 	// Force HL1 Pushables to stay axially aligned.
-	VPhysicsGetObject()->SetInertia( Vector( 1e30, 1e30, 1e30 ) );
+	VPhysicsGetObject()->SetInertia( Vector( 3.f, 3.f, 3.f ) );
 #endif//HL1_DLL
 }
 

game/server/hl1/hl1_basecombatweapon.cpp

@@ -23,16 +23,34 @@ void CBaseHL1CombatWeapon::Precache()
 	PrecacheScriptSound( "BaseCombatWeapon.WeaponDrop" );
 }
 
+bool CBaseHL1CombatWeapon::CreateVPhysics( void )
+{
+	VPhysicsInitNormal( SOLID_BBOX, GetSolidFlags() | FSOLID_TRIGGER, false );
+	IPhysicsObject *pPhysObj = VPhysicsGetObject();
+        if ( pPhysObj )
+	{
+		pPhysObj->SetMass( 30 );
+		return true;
+	}
+
+	return false;
+}
+
+
 //-----------------------------------------------------------------------------
 // Purpose: 
 //-----------------------------------------------------------------------------
 void CBaseHL1CombatWeapon::FallInit( void )
 {
 	SetModel( GetWorldModel() );
-	SetMoveType( MOVETYPE_FLYGRAVITY, MOVECOLLIDE_FLY_BOUNCE );
+
+	if( !CreateVPhysics() )
+	{
+		SetSolid( SOLID_BBOX );
+		SetMoveType( MOVETYPE_FLYGRAVITY );
                 SetSolid( SOLID_BBOX );
                 AddSolidFlags( FSOLID_TRIGGER );
-	AddSolidFlags( FSOLID_NOT_SOLID );
+	}
 
 	SetPickupTouch();
 
@@ -42,7 +60,9 @@ void CBaseHL1CombatWeapon::FallInit( void )
 
 	// HACKHACK - On ground isn't always set, so look for ground underneath
 	trace_t tr;
-	UTIL_TraceLine( GetAbsOrigin(), GetAbsOrigin() - Vector(0,0,2), MASK_SOLID_BRUSHONLY, this, COLLISION_GROUP_NONE, &tr );
+	UTIL_TraceLine( GetAbsOrigin(), GetAbsOrigin() - Vector(0,0,256), MASK_SOLID_BRUSHONLY, this, COLLISION_GROUP_NONE, &tr );
+
+	SetAbsOrigin( tr.endpos );
 
 	if ( tr.fraction < 1.0 )
 	{
@@ -63,7 +83,20 @@ void CBaseHL1CombatWeapon::FallThink ( void )
 {
 	SetNextThink( gpGlobals->curtime + 0.1f );
 
-	if ( GetFlags() & FL_ONGROUND )
+	bool shouldMaterialize = false;
+	IPhysicsObject *pPhysics = VPhysicsGetObject();
+	if ( pPhysics )
+	{
+		shouldMaterialize = pPhysics->IsAsleep();
+	}
+	else
+	{
+		shouldMaterialize = (GetFlags() & FL_ONGROUND) ? true : false;
+		if( shouldMaterialize )
+			SetSize( Vector( -24, -24, 0 ), Vector( 24, 24, 16 ) );
+	}
+
+	if ( shouldMaterialize )
 	{
 		// clatter if we have an owner (i.e., dropped by someone)
 		// don't clatter if the gun is waiting to respawn (if it's waiting, it is invisible!)
@@ -73,14 +106,8 @@ void CBaseHL1CombatWeapon::FallThink ( void )
 		}
 
 		// lie flat
-		QAngle ang = GetAbsAngles();
-		ang.x = 0;
-		ang.z = 0;
-		SetAbsAngles( ang );
-
 		Materialize();
 
-		SetSize( Vector( -24, -24, 0 ), Vector( 24, 24, 16 ) );
 	}
 }
 

game/server/props.cpp

@@ -5525,6 +5525,7 @@ class CPhysicsPropMultiplayer : public CPhysicsProp, public IMultiplayerPhysics
 	{
 		m_iPhysicsMode = PHYSICS_MULTIPLAYER_AUTODETECT;
 		m_usingCustomCollisionBounds = false;
+		m_fMass = 0.f;
 	}
 
 // IBreakableWithPropData:

game/server/util.cpp

@@ -352,8 +352,12 @@ int UTIL_DropToFloor( CBaseEntity *pEntity, unsigned int mask, CBaseEntity *pIgn
 		return -1;
 #endif // HL2MP
 
-	UTIL_TraceEntity( pEntity, pEntity->GetAbsOrigin(), pEntity->GetAbsOrigin() - Vector(0,0,256), mask, pIgnore, pEntity->GetCollisionGroup(), &trace );
+	UTIL_TraceEntity( pEntity, pEntity->GetAbsOrigin() + Vector(0,0,1), pEntity->GetAbsOrigin() - Vector(0,0,256), mask, pIgnore, pEntity->GetCollisionGroup(), &trace );
 
+#ifdef HL1_DLL
+	if( fabs(pEntity->GetAbsOrigin().z - trace.endpos.z) <= 2.f )
+		return -1;
+#endif
 
 	if (trace.allsolid)
 		return -1;

game/shared/hl1/hl1_basecombatweapon_shared.h

@@ -35,6 +35,7 @@ public:
 
 	void FallInit( void );						// prepare to fall to the ground
 	virtual void FallThink( void );						// make the weapon fall to the ground after spawning
+	bool CreateVPhysics( void );
 
 	void EjectShell( CBaseEntity *pPlayer, int iType );
 

game/shared/hl1/hl1mp_weapon_mp5.cpp

@@ -125,7 +125,7 @@ void CWeaponMP5::PrimaryAttack( void )
 
 	EjectShell( pPlayer, 0 );
 
-	pPlayer->ViewPunch( QAngle( -1, 0, 0 ) );
+	pPlayer->ViewPunch( QAngle( random->RandomFloat( -0.5f, 0.5f ), 0, 0 ) );
 #ifdef CLIENT_DLL
 	pPlayer->DoMuzzleFlash();
 #else