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1 files changed, 103 insertions, 0 deletions

diff --git a/game/shared/portal/portal_collideable_enumerator.cpp b/game/shared/portal/portal_collideable_enumerator.cpp
new file mode 100644
index 0000000..6cd2742
--- /dev/null
+++ b/game/shared/portal/portal_collideable_enumerator.cpp
@@ -0,0 +1,103 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#include "cbase.h"
+#include "prop_portal_shared.h"
+#include "portal_collideable_enumerator.h"
+
+#define PORTAL_TELEPORTATION_PLANE_OFFSET 7.0f
+
+CPortalCollideableEnumerator::CPortalCollideableEnumerator( const CProp_Portal *pAssociatedPortal )
+{
+	Assert( pAssociatedPortal );
+	m_hTestPortal = pAssociatedPortal;
+
+	pAssociatedPortal->GetVectors( &m_vPlaneNormal, NULL, NULL );
+
+	m_ptForward1000 = pAssociatedPortal->GetAbsOrigin();
+	m_ptForward1000 += m_vPlaneNormal * PORTAL_TELEPORTATION_PLANE_OFFSET;
+	m_fPlaneDist = m_vPlaneNormal.Dot( m_ptForward1000 );
+
+	m_ptForward1000 += m_vPlaneNormal * 1000.0f;
+
+	m_iHandleCount = 0;
+}
+
+IterationRetval_t CPortalCollideableEnumerator::EnumElement( IHandleEntity *pHandleEntity )
+{
+	EHANDLE hEnt = pHandleEntity->GetRefEHandle();
+	
+	CBaseEntity *pEnt = hEnt.Get();
+	if( pEnt == NULL ) //I really never thought this would be necessary
+		return ITERATION_CONTINUE;
+	
+	if( hEnt == m_hTestPortal )
+		return ITERATION_CONTINUE; //ignore this portal
+
+	/*if( staticpropmgr->IsStaticProp( pHandleEntity ) )
+	{
+		//we're dealing with a static prop, which unfortunately doesn't have everything I want to use for checking
+		
+		ICollideable *pCollideable = pEnt->GetCollideable();
+
+		Vector vMins, vMaxs;
+		pCollideable->WorldSpaceSurroundingBounds( &vMins, &vMaxs );
+
+		Vector ptTest( (m_vPlaneNormal.x > 0.0f)?(vMaxs.x):(vMins.x),
+						(m_vPlaneNormal.y > 0.0f)?(vMaxs.y):(vMins.y),
+						(m_vPlaneNormal.z > 0.0f)?(vMaxs.z):(vMins.z) );
+	
+		float fPtPlaneDist = m_vPlaneNormal.Dot( ptTest ) - m_fPlaneDist;
+		if( fPtPlaneDist <= 0.0f )
+			return ITERATION_CONTINUE;
+	}
+	else*/
+	{
+		//not a static prop, w00t
+		CCollisionProperty *pEntityCollision = pEnt->CollisionProp();
+
+		if( !pEntityCollision->IsSolid() )
+			return ITERATION_CONTINUE; //not solid
+
+		Vector ptEntCenter = pEntityCollision->WorldSpaceCenter();
+
+		float fBoundRadius = pEntityCollision->BoundingRadius();
+		float fPtPlaneDist = m_vPlaneNormal.Dot( ptEntCenter ) - m_fPlaneDist;
+
+		if( fPtPlaneDist < -fBoundRadius )
+			return ITERATION_CONTINUE; //object wholly behind the portal
+
+		if( !(fPtPlaneDist > fBoundRadius) && (fPtPlaneDist > -fBoundRadius) ) //object is not wholly in front of the portal, but could be partially in front, do more checks
+		{
+			Vector ptNearest;
+			pEntityCollision->CalcNearestPoint( m_ptForward1000, &ptNearest );
+			fPtPlaneDist = m_vPlaneNormal.Dot( ptNearest ) - m_fPlaneDist;
+			if( fPtPlaneDist < 0.0f )
+				return ITERATION_CONTINUE; //closest point was behind the portal plane, we don't want it
+		}
+
+
+	}
+
+	//if we're down here, this entity needs to be added to our enumeration
+	Assert( m_iHandleCount < 1024 );
+	if( m_iHandleCount < 1024 ) 
+		m_pHandles[m_iHandleCount] = pHandleEntity;
+	++m_iHandleCount;
+
+	return ITERATION_CONTINUE;
+}
+
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