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game/server/pathtrack.h

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================//
+
+#ifndef PATHTRACK_H
+#define PATHTRACK_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+
+#include "entityoutput.h"
+#include "shareddefs.h"
+
+
+//-----------------------------------------------------------------------------
+// Spawnflag for CPathTrack
+//-----------------------------------------------------------------------------
+#define SF_PATH_DISABLED		0x00000001
+//#define SF_PATH_FIREONCE		0x00000002
+#define SF_PATH_ALTREVERSE		0x00000004
+#define SF_PATH_DISABLE_TRAIN	0x00000008
+#define SF_PATH_TELEPORT		0x00000010
+#define SF_PATH_UPHILL			0x00000020
+#define SF_PATH_DOWNHILL		0x00000040
+#define SF_PATH_ALTERNATE		0x00008000
+
+
+enum TrackOrientationType_t
+{
+	TrackOrientation_Fixed = 0,
+	TrackOrientation_FacePath,
+	TrackOrientation_FacePathAngles,
+};
+
+
+//-----------------------------------------------------------------------------
+// Paths!
+//-----------------------------------------------------------------------------
+class CPathTrack : public CPointEntity
+{
+	DECLARE_CLASS( CPathTrack, CPointEntity );
+
+public:
+	CPathTrack();
+
+	void		Spawn( void );
+	void		Activate( void );
+	void		DrawDebugGeometryOverlays();
+	
+	void		ToggleAlternatePath( void );
+	void		EnableAlternatePath( void );
+	void		DisableAlternatePath( void );
+	bool		HasAlternathPath() const;
+
+	void		TogglePath( void );
+	void		EnablePath( void );
+	void		DisablePath( void );
+
+	static CPathTrack	*ValidPath( CPathTrack *ppath, int testFlag = true );		// Returns ppath if enabled, NULL otherwise
+
+	CPathTrack	*GetNextInDir( bool bForward );
+	CPathTrack	*GetNext( void );
+	CPathTrack	*GetPrevious( void );
+	
+	CPathTrack	*Nearest( const Vector &origin );
+	//CPathTrack *LookAhead( Vector &origin, float dist, int move );
+	CPathTrack *LookAhead( Vector &origin, float dist, int move, CPathTrack **pNextNext = NULL );
+
+	TrackOrientationType_t GetOrientationType();
+	QAngle GetOrientation( bool bForwardDir );
+
+	CHandle<CPathTrack>	m_pnext;
+	CHandle<CPathTrack>	m_pprevious;
+	CHandle<CPathTrack>	m_paltpath;
+
+	float GetRadius() const { return m_flRadius; }
+
+	// These four methods help for circular path checking. Call BeginIteration
+	// before iterating, EndInteration afterwards. Call Visit on each path in the
+	// list. Then you can use HasBeenVisited to see if you've visited the node
+	// already, which means you've got a circular or lasso path. You can use the
+	// macro BEGIN_PATH_TRACK_ITERATION below to simplify the calls to
+	// BeginInteration + EndIteration.
+	static void BeginIteration();
+	static void EndIteration();
+	void		Visit();
+	bool		HasBeenVisited() const;
+
+	bool		IsUpHill(){ return ( FBitSet( m_spawnflags, SF_PATH_UPHILL ) ) ? true : false; }
+	bool		IsDownHill(){ return ( FBitSet( m_spawnflags, SF_PATH_DOWNHILL ) ) ? true : false; }
+	int	GetHillType()
+	{
+		int iRetVal = HILL_TYPE_NONE;
+		if ( IsUpHill() )
+		{
+			iRetVal = HILL_TYPE_UPHILL;
+		}
+		else if ( IsDownHill() )
+		{
+			iRetVal = HILL_TYPE_DOWNHILL;
+		}
+
+		return iRetVal;
+	}
+
+	bool IsDisabled( void ){ return FBitSet( m_spawnflags, SF_PATH_DISABLED ); }
+
+	void InputPass( inputdata_t &inputdata );
+	void InputTeleport( inputdata_t &inputdata );
+
+	void InputToggleAlternatePath( inputdata_t &inputdata );
+	void InputEnableAlternatePath( inputdata_t &inputdata );
+	void InputDisableAlternatePath( inputdata_t &inputdata );
+
+	void InputTogglePath( inputdata_t &inputdata );
+	void InputEnablePath( inputdata_t &inputdata );
+	void InputDisablePath( inputdata_t &inputdata );
+
+private:
+	void		Project( CPathTrack *pstart, CPathTrack *pend, Vector &origin, float dist );
+	void		SetPrevious( CPathTrack *pprevious );
+	void		Link( void );
+	
+	static CPathTrack *Instance( edict_t *pent );
+
+	DECLARE_DATADESC();
+
+	float		m_flRadius;
+	float		m_length;
+	string_t	m_altName;
+    int			m_nIterVal;
+	TrackOrientationType_t m_eOrientationType;
+
+	COutputEvent m_OnPass;
+	COutputEvent m_OnTeleport;
+
+	static int	s_nCurrIterVal;
+	static bool s_bIsIterating;
+};
+
+//-----------------------------------------------------------------------------
+// Used to make sure circular iteration works all nice
+//-----------------------------------------------------------------------------
+#define BEGIN_PATH_TRACK_ITERATION() CPathTrackVisitor _visit
+
+class CPathTrackVisitor
+{
+public:
+	CPathTrackVisitor() { CPathTrack::BeginIteration(); }
+	~CPathTrackVisitor() { CPathTrack::EndIteration(); }
+};
+
+
+
+#endif // PATHTRACK_H