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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
//=============================================================================//
#include "cbase.h"
#include "info_camera_link.h"
#include "point_camera.h"
#include "utllinkedlist.h"
// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"
//-----------------------------------------------------------------------------
// Link between entities and cameras
//-----------------------------------------------------------------------------
class CInfoCameraLink : public CLogicalEntity
{
DECLARE_CLASS( CInfoCameraLink, CLogicalEntity );
DECLARE_DATADESC();
public:
CInfoCameraLink();
~CInfoCameraLink();
virtual void Activate();
private:
void InputSetCamera(inputdata_t &inputdata);
void InputSetTargetEntity(inputdata_t &inputdata);
void SetCameraByName(const char *szName);
CHandle<CPointCamera> m_hCamera;
EHANDLE m_hTargetEntity;
string_t m_strPointCamera;
friend CBaseEntity *CreateInfoCameraLink( CBaseEntity *pTarget, CPointCamera *pCamera );
friend void PointCameraSetupVisibility( CBaseEntity *pPlayer, int area, unsigned char *pvs, int pvssize );
};
//-----------------------------------------------------------------------------
// List of all info camera links
//-----------------------------------------------------------------------------
CUtlFixedLinkedList<CInfoCameraLink *> g_InfoCameraLinkList;
//-----------------------------------------------------------------------------
// Save/load
//-----------------------------------------------------------------------------
BEGIN_DATADESC( CInfoCameraLink )
DEFINE_KEYFIELD( m_strPointCamera, FIELD_STRING, "PointCamera" ),
DEFINE_FIELD( m_hCamera, FIELD_EHANDLE ),
DEFINE_FIELD( m_hTargetEntity, FIELD_EHANDLE ),
// Outputs
DEFINE_INPUTFUNC( FIELD_STRING, "SetCamera", InputSetCamera ),
END_DATADESC()
LINK_ENTITY_TO_CLASS( info_camera_link, CInfoCameraLink );
//-----------------------------------------------------------------------------
// Constructor, destructor
//-----------------------------------------------------------------------------
CInfoCameraLink::CInfoCameraLink()
{
g_InfoCameraLinkList.AddToTail( this );
}
CInfoCameraLink::~CInfoCameraLink()
{
g_InfoCameraLinkList.FindAndRemove( this );
}
//-----------------------------------------------------------------------------
// Purpose: Called after all entities have spawned and after a load game.
//-----------------------------------------------------------------------------
void CInfoCameraLink::Activate()
{
BaseClass::Activate();
// Checks necessary to prevent interference with CreateInfoCameraLink
if ( !m_hCamera )
{
SetCameraByName( STRING(m_strPointCamera) );
}
if ( !m_hTargetEntity )
{
m_hTargetEntity = gEntList.FindEntityByName( NULL, STRING(m_target) );
}
}
void CInfoCameraLink::SetCameraByName(const char *szName)
{
CBaseEntity *pBaseEnt = gEntList.FindEntityByName( NULL, szName );
if( pBaseEnt )
{
m_hCamera = dynamic_cast<CPointCamera *>( pBaseEnt );
if ( m_hCamera )
{
// Keep the camera name consistent for save/load
m_strPointCamera = MAKE_STRING( szName );
}
}
}
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void CInfoCameraLink::InputSetCamera(inputdata_t &inputdata)
{
SetCameraByName( inputdata.value.String() );
}
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
CBaseEntity *CreateInfoCameraLink( CBaseEntity *pTarget, CPointCamera *pCamera )
{
CInfoCameraLink *pInfoCameraLink = (CInfoCameraLink*)CreateEntityByName( "info_camera_link" );
if ( !pInfoCameraLink )
return NULL;
pInfoCameraLink->m_hCamera = pCamera;
pInfoCameraLink->m_hTargetEntity = pTarget;
pInfoCameraLink->Spawn();
return pInfoCameraLink;
}
//-----------------------------------------------------------------------------
// Sets up visibility
//-----------------------------------------------------------------------------
void PointCameraSetupVisibility( CBaseEntity *pPlayer, int area, unsigned char *pvs, int pvssize )
{
for ( CPointCamera *pCameraEnt = GetPointCameraList(); pCameraEnt != NULL; pCameraEnt = pCameraEnt->m_pNext )
{
pCameraEnt->SetActive( false );
}
int nNext;
for ( int i = g_InfoCameraLinkList.Head(); i != g_InfoCameraLinkList.InvalidIndex(); i = nNext )
{
nNext = g_InfoCameraLinkList.Next( i );
CBaseEntity *pTargetEnt = g_InfoCameraLinkList[i]->m_hTargetEntity;
if ( !pTargetEnt )
{
UTIL_Remove( g_InfoCameraLinkList[i] );
continue;
}
// Don't bother if it's not visible
if ( pTargetEnt->IsEffectActive( EF_NODRAW ) )
continue;
if ( !pTargetEnt->NetworkProp()->IsInPVS( pPlayer->edict(), pvs, pvssize ) )
continue;
if ( engine->CheckAreasConnected( area, pTargetEnt->NetworkProp()->AreaNum() ) )
{
CPointCamera *pCameraEnt = g_InfoCameraLinkList[i]->m_hCamera;
if ( pCameraEnt )
{
engine->AddOriginToPVS( pCameraEnt->GetAbsOrigin() );
pCameraEnt->SetActive( true );
}
}
}
}
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