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72 lines
1.7 KiB
72 lines
1.7 KiB
5 years ago
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//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//===========================================================================//
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#include "cbase.h"
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#include "func_areaportalbase.h"
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// memdbgon must be the last include file in a .cpp file!!!
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#include "tier0/memdbgon.h"
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// A sphere around the player used for backface culling of areaportals.
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#define VIEWER_PADDING 80
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CUtlLinkedList<CFuncAreaPortalBase*, unsigned short> g_AreaPortals;
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//---------------------------------------------------------
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// Save/Restore
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//---------------------------------------------------------
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BEGIN_DATADESC( CFuncAreaPortalBase )
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DEFINE_FIELD( m_portalNumber, FIELD_INTEGER ),
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DEFINE_KEYFIELD( m_iPortalVersion, FIELD_INTEGER, "PortalVersion" )
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// DEFINE_FIELD( m_AreaPortalsElement, FIELD_SHORT ),
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END_DATADESC()
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CFuncAreaPortalBase::CFuncAreaPortalBase()
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{
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m_portalNumber = -1;
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m_AreaPortalsElement = g_AreaPortals.AddToTail( this );
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m_iPortalVersion = 0;
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}
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CFuncAreaPortalBase::~CFuncAreaPortalBase()
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{
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g_AreaPortals.Remove( m_AreaPortalsElement );
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}
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bool CFuncAreaPortalBase::UpdateVisibility( const Vector &vOrigin, float fovDistanceAdjustFactor, bool &bIsOpenOnClient )
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{
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// NOTE: We leave bIsOpenOnClient alone on purpose here. See the header for a description of why.
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if( m_portalNumber == -1 )
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return false;
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// See if the viewer is on the backside.
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VPlane plane;
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if( !engine->GetAreaPortalPlane( vOrigin, m_portalNumber, &plane ) )
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return true; // leave it open if there's an error here for some reason
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bool bOpen = false;
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if( plane.DistTo( vOrigin ) + VIEWER_PADDING > 0 )
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bOpen = true;
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return bOpen;
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}
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