1 files changed, 252 insertions, 0 deletions
diff --git a/game/server/portal/PhysicsCloneArea.cpp b/game/server/portal/PhysicsCloneArea.cpp
new file mode 100644
index 0000000..620bd8e
--- /dev/null
+++ b/game/server/portal/PhysicsCloneArea.cpp
@@ -0,0 +1,252 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Instead of cloning all physics objects in a level to get proper
+//			near-portal reactions, only clone from a larger area near portals.
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#include "cbase.h"
+#include "PhysicsCloneArea.h"
+#include "prop_portal.h"
+#include "portal_shareddefs.h"
+#include "collisionutils.h"
+#include "env_debughistory.h"
+
+LINK_ENTITY_TO_CLASS( physicsclonearea, CPhysicsCloneArea );
+
+
+#define PHYSICSCLONEAREASCALE 4.0f
+
+const Vector CPhysicsCloneArea::vLocalMins( 3.0f, 
+										   -PORTAL_HALF_WIDTH * PHYSICSCLONEAREASCALE, 
+										   -PORTAL_HALF_HEIGHT * PHYSICSCLONEAREASCALE );
+const Vector CPhysicsCloneArea::vLocalMaxs( PORTAL_HALF_HEIGHT * PHYSICSCLONEAREASCALE,  //x is the forward which is fairly thin for portals, replacing with halfheight
+											PORTAL_HALF_WIDTH * PHYSICSCLONEAREASCALE,
+											PORTAL_HALF_HEIGHT * PHYSICSCLONEAREASCALE );
+
+extern ConVar sv_portal_debug_touch;
+
+void CPhysicsCloneArea::StartTouch( CBaseEntity *pOther )
+{
+	if( !m_bActive )
+		return;
+
+	if( sv_portal_debug_touch.GetBool() )
+	{
+		DevMsg( "PortalCloneArea %i Start Touch: %s : %f\n", ((m_pAttachedPortal->m_bIsPortal2)?(2):(1)), pOther->GetClassname(), gpGlobals->curtime );
+	}
+#if !defined( DISABLE_DEBUG_HISTORY )
+	if ( !IsMarkedForDeletion() )
+	{
+		ADD_DEBUG_HISTORY( HISTORY_PLAYER_DAMAGE, UTIL_VarArgs( "PortalCloneArea %i Start Touch: %s : %f\n", ((m_pAttachedPortal->m_bIsPortal2)?(2):(1)), pOther->GetClassname(), gpGlobals->curtime  ) );
+	}
+#endif
+
+	m_pAttachedSimulator->StartCloningEntity( pOther );
+}
+
+void CPhysicsCloneArea::Touch( CBaseEntity *pOther )
+{
+	if( !m_bActive )
+		return;
+
+	//TODO: Planar checks to see if it's a better idea to reclone/unclone
+	
+}
+
+void CPhysicsCloneArea::EndTouch( CBaseEntity *pOther )
+{
+	if( !m_bActive )
+		return;
+
+	if( sv_portal_debug_touch.GetBool() )
+	{
+		DevMsg( "PortalCloneArea %i End Touch: %s : %f\n", ((m_pAttachedPortal->m_bIsPortal2)?(2):(1)), pOther->GetClassname(), gpGlobals->curtime );
+	}
+#if !defined( DISABLE_DEBUG_HISTORY )
+	if ( !IsMarkedForDeletion() )
+	{
+		ADD_DEBUG_HISTORY( HISTORY_PLAYER_DAMAGE, UTIL_VarArgs( "PortalCloneArea %i End Touch: %s : %f\n", ((m_pAttachedPortal->m_bIsPortal2)?(2):(1)), pOther->GetClassname(), gpGlobals->curtime ) );
+	}
+#endif
+
+	m_pAttachedSimulator->StopCloningEntity( pOther );
+}
+
+void CPhysicsCloneArea::Spawn( void )
+{
+	BaseClass::Spawn();
+
+	Assert( m_pAttachedPortal );
+
+	AddEffects( EF_NORECEIVESHADOW | EF_NOSHADOW | EF_NODRAW );
+
+	SetSolid( SOLID_OBB );
+	SetSolidFlags( FSOLID_TRIGGER | FSOLID_NOT_SOLID );
+	SetMoveType( MOVETYPE_NONE );
+	SetCollisionGroup( COLLISION_GROUP_PLAYER );
+
+	SetSize( vLocalMins, vLocalMaxs );
+}
+
+void CPhysicsCloneArea::Activate( void )
+{
+	BaseClass::Activate();
+}
+
+int CPhysicsCloneArea::ObjectCaps( void )
+{ 
+	return BaseClass::ObjectCaps() | FCAP_DONT_SAVE; //don't save this entity in any way, we naively recreate them
+}
+
+
+void CPhysicsCloneArea::UpdatePosition( void )
+{
+	Assert( m_pAttachedPortal );
+
+	//untouch everything we're touching
+	touchlink_t *root = ( touchlink_t * )GetDataObject( TOUCHLINK );
+	if( root )
+	{
+		//don't want to risk list corruption while untouching
+		CUtlVector<CBaseEntity *> TouchingEnts;
+		for( touchlink_t *link = root->nextLink; link != root; link = link->nextLink )
+			TouchingEnts.AddToTail( link->entityTouched );
+
+
+		for( int i = TouchingEnts.Count(); --i >= 0; )
+		{
+			CBaseEntity *pTouch = TouchingEnts[i];
+
+			pTouch->PhysicsNotifyOtherOfUntouch( pTouch, this );
+			PhysicsNotifyOtherOfUntouch( this, pTouch );
+		}
+	}
+
+	SetAbsOrigin( m_pAttachedPortal->GetAbsOrigin() );
+	SetAbsAngles( m_pAttachedPortal->GetAbsAngles() );
+	m_bActive = m_pAttachedPortal->m_bActivated;
+
+	//NDebugOverlay::EntityBounds( this, 0, 0, 255, 25, 5.0f );
+
+	//RemoveFlag( FL_DONTTOUCH );
+	CloneNearbyEntities(); //wake new objects so they can figure out that they touch
+}
+
+void CPhysicsCloneArea::CloneNearbyEntities( void )
+{
+	CBaseEntity*	pList[ 1024 ];
+
+	Vector vForward, vUp, vRight;
+	GetVectors( &vForward, &vRight, &vUp );
+
+	Vector ptOrigin = GetAbsOrigin();
+	QAngle qAngles = GetAbsAngles();
+
+	Vector ptOBBStart = ptOrigin;
+	ptOBBStart += vForward * vLocalMins.x;
+	ptOBBStart += vRight * vLocalMins.y;
+	ptOBBStart += vUp * vLocalMins.z;
+	
+
+	vForward *= vLocalMaxs.x - vLocalMins.x;
+	vRight *= vLocalMaxs.y - vLocalMins.y;
+	vUp *= vLocalMaxs.z - vLocalMins.z;
+
+
+	Vector vAABBMins, vAABBMaxs;
+	vAABBMins = vAABBMaxs = ptOBBStart;
+
+	for( int i = 1; i != 8; ++i )
+	{
+		Vector ptTest = ptOBBStart;
+		if( i & (1 << 0) ) ptTest += vForward;
+		if( i & (1 << 1) ) ptTest += vRight;
+		if( i & (1 << 2) ) ptTest += vUp;
+
+		if( ptTest.x < vAABBMins.x ) vAABBMins.x = ptTest.x;
+		if( ptTest.y < vAABBMins.y ) vAABBMins.y = ptTest.y;
+		if( ptTest.z < vAABBMins.z ) vAABBMins.z = ptTest.z;
+		if( ptTest.x > vAABBMaxs.x ) vAABBMaxs.x = ptTest.x;
+		if( ptTest.y > vAABBMaxs.y ) vAABBMaxs.y = ptTest.y;
+		if( ptTest.z > vAABBMaxs.z ) vAABBMaxs.z = ptTest.z;
+	}
+	
+
+	/*{
+		Vector ptAABBCenter = (vAABBMins + vAABBMaxs) * 0.5f;
+		Vector vAABBExtent = (vAABBMaxs - vAABBMins) * 0.5f;
+		NDebugOverlay::Box( ptAABBCenter, -vAABBExtent, vAABBExtent, 0, 0, 255, 128, 10.0f );
+	}*/
+	
+
+	int count = UTIL_EntitiesInBox( pList, 1024, vAABBMins, vAABBMaxs, 0 );
+	trace_t tr;
+	UTIL_ClearTrace( tr );
+	
+
+	//Iterate over all the possible targets
+	for ( int i = 0; i < count; i++ )
+	{
+		CBaseEntity *pEntity = pList[i];
+
+		if ( pEntity  && (pEntity != this) )
+		{
+			IPhysicsObject *pPhysicsObject = pEntity->VPhysicsGetObject();
+
+			if( pPhysicsObject )
+			{
+				CCollisionProperty *pEntCollision = pEntity->CollisionProp();
+				Vector ptEntityCenter = pEntCollision->GetCollisionOrigin();
+
+				//double check intersection at the OBB vs OBB level, we don't want to affect large piles of physics objects if we don't have to, it gets slow
+				if( IsOBBIntersectingOBB( ptOrigin, qAngles, vLocalMins, vLocalMaxs, 
+					ptEntityCenter, pEntCollision->GetCollisionAngles(), pEntCollision->OBBMins(), pEntCollision->OBBMaxs() ) )
+				{
+					tr.endpos = (ptOrigin + ptEntityCenter) * 0.5;
+					PhysicsMarkEntitiesAsTouching( pEntity, tr );
+					//StartTouch( pEntity );
+					
+					//pEntity->WakeRestingObjects();
+					//pPhysicsObject->Wake();
+				}
+			}
+		}
+	}
+}
+
+void CPhysicsCloneArea::CloneTouchingEntities( void )
+{
+	if( m_pAttachedPortal && m_pAttachedPortal->m_bActivated )
+	{
+		touchlink_t *root = ( touchlink_t * )GetDataObject( TOUCHLINK );
+		if( root )
+		{
+			for( touchlink_t *link = root->nextLink; link != root; link = link->nextLink )
+				m_pAttachedSimulator->StartCloningEntity( link->entityTouched );
+		}
+	}
+}
+
+
+
+
+
+CPhysicsCloneArea *CPhysicsCloneArea::CreatePhysicsCloneArea( CProp_Portal *pFollowPortal )
+{
+	if( !pFollowPortal )
+		return NULL;
+
+	CPhysicsCloneArea *pCloneArea = (CPhysicsCloneArea *)CreateEntityByName( "physicsclonearea" );
+
+	pCloneArea->m_pAttachedPortal = pFollowPortal;
+	pCloneArea->m_pAttachedSimulator = &pFollowPortal->m_PortalSimulator;
+
+	DispatchSpawn( pCloneArea );
+
+	pCloneArea->UpdatePosition();
+
+	return pCloneArea;
+}
+