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141 lines
4.6 KiB
C++
141 lines
4.6 KiB
C++
//========= Copyright © 1996-2005, 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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// Navigation ladders
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// Author: Michael S. Booth (mike@turtlerockstudios.com), January 2003
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#ifndef _NAV_LADDER_H_
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#define _NAV_LADDER_H_
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class CNavArea;
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//--------------------------------------------------------------------------------------------------------------
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/**
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* Placeholder ladder class that holds the mins and maxs for a ladder, since its brushes
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* are merged into the world during the compile.
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*/
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class CInfoLadder : public CBaseEntity
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{
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public:
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DECLARE_CLASS( CInfoLadder, CBaseEntity );
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bool KeyValue( const char *szKeyName, const char *szValue );
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Vector mins;
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Vector maxs;
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};
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//--------------------------------------------------------------------------------------------------------------
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/**
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* The NavLadder represents ladders in the Navigation Mesh, and their connections to adjacent NavAreas
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* @todo Deal with ladders that allow jumping off to areas in the middle
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*/
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class CNavLadder
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{
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public:
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CNavLadder( void )
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{
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m_topForwardArea = NULL;
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m_topRightArea = NULL;
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m_topLeftArea = NULL;
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m_topBehindArea = NULL;
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m_bottomArea = NULL;
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// set an ID for interactive editing - loads will overwrite this
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m_id = m_nextID++;
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}
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~CNavLadder();
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void Save( FileHandle_t file, unsigned int version ) const;
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void Load( FileHandle_t file, unsigned int version );
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unsigned int GetID( void ) const { return m_id; } ///< return this ladder's unique ID
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static void CompressIDs( void ); ///<re-orders ladder ID's so they are continuous
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enum LadderDirectionType
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{
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LADDER_UP = 0,
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LADDER_DOWN,
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NUM_LADDER_DIRECTIONS
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};
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Vector m_top; ///< world coords of the top of the ladder
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Vector m_bottom; ///< world coords of the top of the ladder
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float m_length; ///< the length of the ladder
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float m_width;
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Vector GetPosAtHeight( float height ) const; ///< Compute x,y coordinate of the ladder at a given height
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CNavArea *m_topForwardArea; ///< the area at the top of the ladder
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CNavArea *m_topLeftArea;
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CNavArea *m_topRightArea;
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CNavArea *m_topBehindArea; ///< area at top of ladder "behind" it - only useful for descending
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CNavArea *m_bottomArea; ///< the area at the bottom of the ladder
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bool IsConnected( const CNavArea *area, LadderDirectionType dir ) const; ///< returns true if given area is connected in given direction
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void ConnectGeneratedLadder( void ); ///< Connect a generated ladder to nav areas at the end of nav generation
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void ConnectTo( CNavArea *area ); ///< connect this ladder to given area
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void Disconnect( CNavArea *area ); ///< disconnect this ladder from given area
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void OnSplit( CNavArea *original, CNavArea *alpha, CNavArea *beta ); ///< when original is split into alpha and beta, update our connections
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void OnDestroyNotify( CNavArea *dead ); ///< invoked when given area is going away
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void DrawLadder( void ) const; ///< Draws ladder and connections
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void DrawConnectedAreas( void ); ///< Draws connected areas
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void UpdateDangling( void ); ///< Checks if the ladder is dangling (bots cannot go up)
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bool IsInUse( const CBasePlayer *ignore = NULL ) const; ///< return true if someone is on this ladder (other than 'ignore')
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void SetDir( NavDirType dir );
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NavDirType GetDir( void ) const;
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const Vector &GetNormal( void ) const;
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private:
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NavDirType m_dir; ///< which way the ladder faces (ie: surface normal of climbable side)
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Vector m_normal; ///< surface normal of the ladder surface (or Vector-ized m_dir, if the traceline fails)
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enum LadderConnectionType ///< Ladder connection directions, to facilitate iterating over connections
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{
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LADDER_TOP_FORWARD = 0,
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LADDER_TOP_LEFT,
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LADDER_TOP_RIGHT,
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LADDER_TOP_BEHIND,
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LADDER_BOTTOM,
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NUM_LADDER_CONNECTIONS
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};
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CNavArea ** GetConnection( LadderConnectionType dir );
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static unsigned int m_nextID; ///< used to allocate unique IDs
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unsigned int m_id; ///< unique area ID
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};
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typedef CUtlLinkedList< CNavLadder *, int > NavLadderList;
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//--------------------------------------------------------------------------------------------------------------
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inline NavDirType CNavLadder::GetDir( void ) const
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{
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return m_dir;
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}
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//--------------------------------------------------------------------------------------------------------------
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inline const Vector &CNavLadder::GetNormal( void ) const
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{
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return m_normal;
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}
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#endif // _NAV_LADDER_H_
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