//========= Copyright © 1996-2005, Valve Corporation, All rights reserved. ============// // // Purpose: // // $NoKeywords: $ // //=============================================================================// // nav_area.h // Navigation areas // Author: Michael S. Booth (mike@turtlerockstudios.com), January 2003 #ifndef _NAV_AREA_H_ #define _NAV_AREA_H_ #include "nav_ladder.h" #include "tier1/memstack.h" // BOTPORT: Clean up relationship between team index and danger storage in nav areas enum { MAX_NAV_TEAMS = 2 }; class CFuncElevator; class CNavVectorNoEditAllocator { public: CNavVectorNoEditAllocator(); static void Reset(); static void *Alloc( size_t nSize ); static void *Realloc( void *pMem, size_t nSize ); static void Free( void *pMem ); static size_t GetSize( void *pMem ); private: static CMemoryStack m_memory; static void *m_pCurrent; static int m_nBytesCurrent; }; #if !defined(_X360) typedef CUtlVectorUltraConservativeAllocator CNavVectorAllocator; #else typedef CNavVectorNoEditAllocator CNavVectorAllocator; #endif //------------------------------------------------------------------------------------------------------------------- /** * Functor interface for iteration */ class IForEachNavArea { public: virtual bool Inspect( const CNavArea *area ) = 0; // Invoked once on each area of the iterated set. Return false to stop iterating. virtual void PostIteration( bool wasCompleteIteration ) { } // Invoked after the iteration has ended. 'wasCompleteIteration' will be true if the entire set was iterated (ie: Inspect() never returned false) }; //------------------------------------------------------------------------------------------------------------------- /** * The NavConnect union is used to refer to connections to areas */ struct NavConnect { NavConnect() { id = 0; length = -1; } union { unsigned int id; CNavArea *area; }; mutable float length; bool operator==( const NavConnect &other ) const { return (area == other.area) ? true : false; } }; typedef CUtlVectorUltraConservative NavConnectVector; //------------------------------------------------------------------------------------------------------------------- /** * The NavLadderConnect union is used to refer to connections to ladders */ union NavLadderConnect { unsigned int id; CNavLadder *ladder; bool operator==( const NavLadderConnect &other ) const { return (ladder == other.ladder) ? true : false; } }; typedef CUtlVectorUltraConservative NavLadderConnectVector; //-------------------------------------------------------------------------------------------------------------- /** * A HidingSpot is a good place for a bot to crouch and wait for enemies */ class HidingSpot { public: virtual ~HidingSpot() { } enum { IN_COVER = 0x01, // in a corner with good hard cover nearby GOOD_SNIPER_SPOT = 0x02, // had at least one decent sniping corridor IDEAL_SNIPER_SPOT = 0x04, // can see either very far, or a large area, or both EXPOSED = 0x08 // spot in the open, usually on a ledge or cliff }; bool HasGoodCover( void ) const { return (m_flags & IN_COVER) ? true : false; } // return true if hiding spot in in cover bool IsGoodSniperSpot( void ) const { return (m_flags & GOOD_SNIPER_SPOT) ? true : false; } bool IsIdealSniperSpot( void ) const { return (m_flags & IDEAL_SNIPER_SPOT) ? true : false; } bool IsExposed( void ) const { return (m_flags & EXPOSED) ? true : false; } int GetFlags( void ) const { return m_flags; } void Save( CUtlBuffer &fileBuffer, unsigned int version ) const; void Load( CUtlBuffer &fileBuffer, unsigned int version ); NavErrorType PostLoad( void ); const Vector &GetPosition( void ) const { return m_pos; } // get the position of the hiding spot unsigned int GetID( void ) const { return m_id; } const CNavArea *GetArea( void ) const { return m_area; } // return nav area this hiding spot is within void Mark( void ) { m_marker = m_masterMarker; } bool IsMarked( void ) const { return (m_marker == m_masterMarker) ? true : false; } static void ChangeMasterMarker( void ) { ++m_masterMarker; } public: void SetFlags( int flags ) { m_flags |= flags; } // FOR INTERNAL USE ONLY void SetPosition( const Vector &pos ) { m_pos = pos; } // FOR INTERNAL USE ONLY private: friend class CNavMesh; friend void ClassifySniperSpot( HidingSpot *spot ); HidingSpot( void ); // must use factory to create Vector m_pos; // world coordinates of the spot unsigned int m_id; // this spot's unique ID unsigned int m_marker; // this spot's unique marker CNavArea *m_area; // the nav area containing this hiding spot unsigned char m_flags; // bit flags static unsigned int m_nextID; // used when allocating spot ID's static unsigned int m_masterMarker; // used to mark spots }; typedef CUtlVectorUltraConservative< HidingSpot * > HidingSpotVector; extern HidingSpotVector TheHidingSpots; extern HidingSpot *GetHidingSpotByID( unsigned int id ); //-------------------------------------------------------------------------------------------------------------- /** * Stores a pointer to an interesting "spot", and a parametric distance along a path */ struct SpotOrder { float t; // parametric distance along ray where this spot first has LOS to our path union { HidingSpot *spot; // the spot to look at unsigned int id; // spot ID for save/load }; }; typedef CUtlVector< SpotOrder > SpotOrderVector; /** * This struct stores possible path segments thru a CNavArea, and the dangerous spots * to look at as we traverse that path segment. */ struct SpotEncounter { NavConnect from; NavDirType fromDir; NavConnect to; NavDirType toDir; Ray path; // the path segment SpotOrderVector spots; // list of spots to look at, in order of occurrence }; typedef CUtlVectorUltraConservative< SpotEncounter * > SpotEncounterVector; //------------------------------------------------------------------------------------------------------------------- /** * A CNavArea is a rectangular region defining a walkable area in the environment */ class CNavAreaCriticalData { protected: // --- Begin critical data, which is heavily hit during pathing operations and carefully arranged for cache performance [7/24/2008 tom] --- /* 0 */ Vector m_nwCorner; // north-west corner position (2D mins) /* 12 */ Vector m_seCorner; // south-east corner position (2D maxs) /* 24 */ float m_invDxCorners; /* 28 */ float m_invDyCorners; /* 32 */ float m_neZ; // height of the implicit corner defined by (m_seCorner.x, m_nwCorner.y, m_neZ) /* 36 */ float m_swZ; // height of the implicit corner defined by (m_nwCorner.x, m_seCorner.y, m_neZ) /* 40 */ Vector m_center; // centroid of area /* 52 */ unsigned char m_playerCount[ MAX_NAV_TEAMS ]; // the number of players currently in this area /* 54 */ bool m_isBlocked[ MAX_NAV_TEAMS ]; // if true, some part of the world is preventing movement through this nav area /* 56 */ unsigned int m_marker; // used to flag the area as visited /* 60 */ float m_totalCost; // the distance so far plus an estimate of the distance left /* 64 */ float m_costSoFar; // distance travelled so far /* 68 */ CNavArea *m_nextOpen, *m_prevOpen; // only valid if m_openMarker == m_masterMarker /* 76 */ unsigned int m_openMarker; // if this equals the current marker value, we are on the open list /* 80 */ int m_attributeFlags; // set of attribute bit flags (see NavAttributeType) //- connections to adjacent areas ------------------------------------------------------------------- /* 84 */ NavConnectVector m_connect[ NUM_DIRECTIONS ]; // a list of adjacent areas for each direction /* 100*/ NavLadderConnectVector m_ladder[ CNavLadder::NUM_LADDER_DIRECTIONS ]; // list of ladders leading up and down from this area /* 108*/ NavConnectVector m_elevatorAreas; // a list of areas reachable via elevator from this area /* 112*/ unsigned int m_nearNavSearchMarker; // used in GetNearestNavArea() /* 116*/ CNavArea *m_parent; // the area just prior to this on in the search path /* 120*/ NavTraverseType m_parentHow; // how we get from parent to us /* 124*/ float m_pathLengthSoFar; // length of path so far, needed for limiting pathfind max path length /* *************** 360 cache line *************** */ /* 128*/ CFuncElevator *m_elevator; // if non-NULL, this area is in an elevator's path. The elevator can transport us vertically to another area. // --- End critical data --- }; class CNavArea : protected CNavAreaCriticalData { public: DECLARE_CLASS_NOBASE( CNavArea ) CNavArea( void ); virtual ~CNavArea(); virtual void OnServerActivate( void ); // (EXTEND) invoked when map is initially loaded virtual void OnRoundRestart( void ); // (EXTEND) invoked for each area when the round restarts virtual void OnRoundRestartPreEntity( void ) { } // invoked for each area when the round restarts, but before entities are deleted and recreated virtual void OnEnter( CBaseCombatCharacter *who, CNavArea *areaJustLeft ) { } // invoked when player enters this area virtual void OnExit( CBaseCombatCharacter *who, CNavArea *areaJustEntered ) { } // invoked when player exits this area virtual void OnDestroyNotify( CNavArea *dead ); // invoked when given area is going away virtual void OnDestroyNotify( CNavLadder *dead ); // invoked when given ladder is going away virtual void OnEditCreateNotify( CNavArea *newArea ) { } // invoked when given area has just been added to the mesh in edit mode virtual void OnEditDestroyNotify( CNavArea *deadArea ) { } // invoked when given area has just been deleted from the mesh in edit mode virtual void OnEditDestroyNotify( CNavLadder *deadLadder ) { } // invoked when given ladder has just been deleted from the mesh in edit mode virtual void Save( CUtlBuffer &fileBuffer, unsigned int version ) const; // (EXTEND) virtual NavErrorType Load( CUtlBuffer &fileBuffer, unsigned int version, unsigned int subVersion ); // (EXTEND) virtual NavErrorType PostLoad( void ); // (EXTEND) invoked after all areas have been loaded - for pointer binding, etc virtual void SaveToSelectedSet( KeyValues *areaKey ) const; // (EXTEND) saves attributes for the area to a KeyValues virtual void RestoreFromSelectedSet( KeyValues *areaKey ); // (EXTEND) restores attributes from a KeyValues // for interactively building or generating nav areas void Build( CNavNode *nwNode, CNavNode *neNode, CNavNode *seNode, CNavNode *swNode ); void Build( const Vector &corner, const Vector &otherCorner ); void Build( const Vector &nwCorner, const Vector &neCorner, const Vector &seCorner, const Vector &swCorner ); void ConnectTo( CNavArea *area, NavDirType dir ); // connect this area to given area in given direction void Disconnect( CNavArea *area ); // disconnect this area from given area void ConnectTo( CNavLadder *ladder ); // connect this area to given ladder void Disconnect( CNavLadder *ladder ); // disconnect this area from given ladder unsigned int GetID( void ) const { return m_id; } // return this area's unique ID static void CompressIDs( void ); // re-orders area ID's so they are continuous unsigned int GetDebugID( void ) const { return m_debugid; } void SetAttributes( int bits ) { m_attributeFlags = bits; } int GetAttributes( void ) const { return m_attributeFlags; } bool HasAttributes( int bits ) const { return ( m_attributeFlags & bits ) ? true : false; } void RemoveAttributes( int bits ) { m_attributeFlags &= ( ~bits ); } void SetPlace( Place place ) { m_place = place; } // set place descriptor Place GetPlace( void ) const { return m_place; } // get place descriptor void MarkAsBlocked( int teamID, CBaseEntity *blocker, bool bGenerateEvent = true ); // An entity can force a nav area to be blocked virtual void UpdateBlocked( bool force = false, int teamID = TEAM_ANY ); // Updates the (un)blocked status of the nav area (throttled) virtual bool IsBlocked( int teamID, bool ignoreNavBlockers = false ) const; void CheckFloor( CBaseEntity *ignore ); // Checks if there is a floor under the nav area, in case a breakable floor is gone void MarkObstacleToAvoid( float obstructionHeight ); void UpdateAvoidanceObstacles( void ); bool HasAvoidanceObstacle( float maxObstructionHeight = StepHeight ) const; // is there a large, immobile object obstructing this area float GetAvoidanceObstacleHeight( void ) const; // returns the maximum height of the obstruction above the ground void CheckWaterLevel( void ); bool IsUnderwater( void ) const { return m_isUnderwater; } bool IsOverlapping( const Vector &pos, float tolerance = 0.0f ) const; // return true if 'pos' is within 2D extents of area. bool IsOverlapping( const CNavArea *area ) const; // return true if 'area' overlaps our 2D extents bool IsOverlapping( const Extent &extent ) const; // return true if 'extent' overlaps our 2D extents bool IsOverlappingX( const CNavArea *area ) const; // return true if 'area' overlaps our X extent bool IsOverlappingY( const CNavArea *area ) const; // return true if 'area' overlaps our Y extent inline float GetZ( const Vector * RESTRICT pPos ) const ; // return Z of area at (x,y) of 'pos' inline float GetZ( const Vector &pos ) const; // return Z of area at (x,y) of 'pos' float GetZ( float x, float y ) const RESTRICT; // return Z of area at (x,y) of 'pos' bool Contains( const Vector &pos ) const; // return true if given point is on or above this area, but no others bool Contains( const CNavArea *area ) const; bool IsCoplanar( const CNavArea *area ) const; // return true if this area and given area are approximately co-planar void GetClosestPointOnArea( const Vector * RESTRICT pPos, Vector *close ) const RESTRICT; // return closest point to 'pos' on this area - returned point in 'close' void GetClosestPointOnArea( const Vector &pos, Vector *close ) const { return GetClosestPointOnArea( &pos, close ); } float GetDistanceSquaredToPoint( const Vector &pos ) const; // return shortest distance between point and this area bool IsDegenerate( void ) const; // return true if this area is badly formed bool IsRoughlySquare( void ) const; // return true if this area is approximately square bool IsFlat( void ) const; // return true if this area is approximately flat bool HasNodes( void ) const; void GetNodes( NavDirType dir, CUtlVector< CNavNode * > *nodes ) const; // build a vector of nodes along the given direction CNavNode *FindClosestNode( const Vector &pos, NavDirType dir ) const; // returns the closest node along the given edge to the given point bool IsContiguous( const CNavArea *other ) const; // return true if the given area and 'other' share a colinear edge (ie: no drop-down or step/jump/climb) float ComputeAdjacentConnectionHeightChange( const CNavArea *destinationArea ) const; // return height change between edges of adjacent nav areas (not actual underlying ground) bool IsEdge( NavDirType dir ) const; // return true if there are no bi-directional links on the given side bool IsDamaging( void ) const; // Return true if continuous damage (ie: fire) is in this area void MarkAsDamaging( float duration ); // Mark this area is damaging for the next 'duration' seconds bool IsVisible( const Vector &eye, Vector *visSpot = NULL ) const; // return true if area is visible from the given eyepoint, return visible spot int GetAdjacentCount( NavDirType dir ) const { return m_connect[ dir ].Count(); } // return number of connected areas in given direction CNavArea *GetAdjacentArea( NavDirType dir, int i ) const; // return the i'th adjacent area in the given direction CNavArea *GetRandomAdjacentArea( NavDirType dir ) const; const NavConnectVector *GetAdjacentAreas( NavDirType dir ) const { return &m_connect[dir]; } bool IsConnected( const CNavArea *area, NavDirType dir ) const; // return true if given area is connected in given direction bool IsConnected( const CNavLadder *ladder, CNavLadder::LadderDirectionType dir ) const; // return true if given ladder is connected in given direction float ComputeGroundHeightChange( const CNavArea *area ); // compute change in actual ground height from this area to given area const NavConnectVector *GetIncomingConnections( NavDirType dir ) const { return &m_incomingConnect[dir]; } // get areas connected TO this area by a ONE-WAY link (ie: we have no connection back to them) void AddIncomingConnection( CNavArea *source, NavDirType incomingEdgeDir ); const NavLadderConnectVector *GetLadders( CNavLadder::LadderDirectionType dir ) const { return &m_ladder[dir]; } CFuncElevator *GetElevator( void ) const { Assert( !( m_attributeFlags & NAV_MESH_HAS_ELEVATOR ) == (m_elevator == NULL) ); return ( m_attributeFlags & NAV_MESH_HAS_ELEVATOR ) ? m_elevator : NULL; } const NavConnectVector &GetElevatorAreas( void ) const { return m_elevatorAreas; } // return collection of areas reachable via elevator from this area void ComputePortal( const CNavArea *to, NavDirType dir, Vector *center, float *halfWidth ) const; // compute portal to adjacent area NavDirType ComputeLargestPortal( const CNavArea *to, Vector *center, float *halfWidth ) const; // compute largest portal to adjacent area, returning direction void ComputeClosestPointInPortal( const CNavArea *to, NavDirType dir, const Vector &fromPos, Vector *closePos ) const; // compute closest point within the "portal" between to adjacent areas NavDirType ComputeDirection( Vector *point ) const; // return direction from this area to the given point //- for hunting algorithm --------------------------------------------------------------------------- void SetClearedTimestamp( int teamID ); // set this area's "clear" timestamp to now float GetClearedTimestamp( int teamID ) const; // get time this area was marked "clear" //- hiding spots ------------------------------------------------------------------------------------ const HidingSpotVector *GetHidingSpots( void ) const { return &m_hidingSpots; } SpotEncounter *GetSpotEncounter( const CNavArea *from, const CNavArea *to ); // given the areas we are moving between, return the spots we will encounter int GetSpotEncounterCount( void ) const { return m_spotEncounters.Count(); } //- "danger" ---------------------------------------------------------------------------------------- void IncreaseDanger( int teamID, float amount ); // increase the danger of this area for the given team float GetDanger( int teamID ); // return the danger of this area (decays over time) virtual float GetDangerDecayRate( void ) const; // return danger decay rate per second //- extents ----------------------------------------------------------------------------------------- float GetSizeX( void ) const { return m_seCorner.x - m_nwCorner.x; } float GetSizeY( void ) const { return m_seCorner.y - m_nwCorner.y; } void GetExtent( Extent *extent ) const; // return a computed extent (XY is in m_nwCorner and m_seCorner, Z is computed) const Vector &GetCenter( void ) const { return m_center; } Vector GetRandomPoint( void ) const; Vector GetCorner( NavCornerType corner ) const; void SetCorner( NavCornerType corner, const Vector& newPosition ); void ComputeNormal( Vector *normal, bool alternate = false ) const; // Computes the area's normal based on m_nwCorner. If 'alternate' is specified, m_seCorner is used instead. void RemoveOrthogonalConnections( NavDirType dir ); //- occupy time ------------------------------------------------------------------------------------ float GetEarliestOccupyTime( int teamID ) const; // returns the minimum time for someone of the given team to reach this spot from their spawn bool IsBattlefront( void ) const { return m_isBattlefront; } // true if this area is a "battlefront" - where rushing teams initially meet //- player counting -------------------------------------------------------------------------------- void IncrementPlayerCount( int teamID, int entIndex ); // add one player to this area's count void DecrementPlayerCount( int teamID, int entIndex ); // subtract one player from this area's count unsigned char GetPlayerCount( int teamID = 0 ) const; // return number of players of given team currently within this area (team of zero means any/all) //- lighting ---------------------------------------------------------------------------------------- float GetLightIntensity( const Vector &pos ) const; // returns a 0..1 light intensity for the given point float GetLightIntensity( float x, float y ) const; // returns a 0..1 light intensity for the given point float GetLightIntensity( void ) const; // returns a 0..1 light intensity averaged over the whole area //- A* pathfinding algorithm ------------------------------------------------------------------------ static void MakeNewMarker( void ) { ++m_masterMarker; if (m_masterMarker == 0) m_masterMarker = 1; } void Mark( void ) { m_marker = m_masterMarker; } BOOL IsMarked( void ) const { return (m_marker == m_masterMarker) ? true : false; } void SetParent( CNavArea *parent, NavTraverseType how = NUM_TRAVERSE_TYPES ) { m_parent = parent; m_parentHow = how; } CNavArea *GetParent( void ) const { return m_parent; } NavTraverseType GetParentHow( void ) const { return m_parentHow; } bool IsOpen( void ) const; // true if on "open list" void AddToOpenList( void ); // add to open list in decreasing value order void AddToOpenListTail( void ); // add to tail of the open list void UpdateOnOpenList( void ); // a smaller value has been found, update this area on the open list void RemoveFromOpenList( void ); static bool IsOpenListEmpty( void ); static CNavArea *PopOpenList( void ); // remove and return the first element of the open list bool IsClosed( void ) const; // true if on "closed list" void AddToClosedList( void ); // add to the closed list void RemoveFromClosedList( void ); static void ClearSearchLists( void ); // clears the open and closed lists for a new search void SetTotalCost( float value ) { Assert( value >= 0.0 && !IS_NAN(value) ); m_totalCost = value; } float GetTotalCost( void ) const { return m_totalCost; } void SetCostSoFar( float value ) { Assert( value >= 0.0 && !IS_NAN(value) ); m_costSoFar = value; } float GetCostSoFar( void ) const { return m_costSoFar; } void SetPathLengthSoFar( float value ) { Assert( value >= 0.0 && !IS_NAN(value) ); m_pathLengthSoFar = value; } float GetPathLengthSoFar( void ) const { return m_pathLengthSoFar; } //- editing ----------------------------------------------------------------------------------------- virtual void Draw( void ) const; // draw area for debugging & editing virtual void DrawFilled( int r, int g, int b, int a, float deltaT = 0.1f, bool noDepthTest = true, float margin = 5.0f ) const; // draw area as a filled rect of the given color virtual void DrawSelectedSet( const Vector &shift ) const; // draw this area as part of a selected set void DrawDragSelectionSet( Color &dragSelectionSetColor ) const; void DrawConnectedAreas( void ) const; void DrawHidingSpots( void ) const; bool SplitEdit( bool splitAlongX, float splitEdge, CNavArea **outAlpha = NULL, CNavArea **outBeta = NULL ); // split this area into two areas at the given edge bool MergeEdit( CNavArea *adj ); // merge this area and given adjacent area bool SpliceEdit( CNavArea *other ); // create a new area between this area and given area void RaiseCorner( NavCornerType corner, int amount, bool raiseAdjacentCorners = true ); // raise/lower a corner (or all corners if corner == NUM_CORNERS) void PlaceOnGround( NavCornerType corner, float inset = 0.0f ); // places a corner (or all corners if corner == NUM_CORNERS) on the ground NavCornerType GetCornerUnderCursor( void ) const; bool GetCornerHotspot( NavCornerType corner, Vector hotspot[NUM_CORNERS] ) const; // returns true if the corner is under the cursor void Shift( const Vector &shift ); // shift the nav area //- ladders ----------------------------------------------------------------------------------------- void AddLadderUp( CNavLadder *ladder ); void AddLadderDown( CNavLadder *ladder ); //- generation and analysis ------------------------------------------------------------------------- virtual void ComputeHidingSpots( void ); // analyze local area neighborhood to find "hiding spots" in this area - for map learning virtual void ComputeSniperSpots( void ); // analyze local area neighborhood to find "sniper spots" in this area - for map learning virtual void ComputeSpotEncounters( void ); // compute spot encounter data - for map learning virtual void ComputeEarliestOccupyTimes( void ); virtual void CustomAnalysis( bool isIncremental = false ) { } // for game-specific analysis virtual bool ComputeLighting( void ); // compute 0..1 light intensity at corners and center (requires client via listenserver) bool TestStairs( void ); // Test an area for being on stairs virtual bool IsAbleToMergeWith( CNavArea *other ) const; virtual void InheritAttributes( CNavArea *first, CNavArea *second = NULL ); //- visibility ------------------------------------------------------------------------------------- enum VisibilityType { NOT_VISIBLE = 0x00, POTENTIALLY_VISIBLE = 0x01, COMPLETELY_VISIBLE = 0x02, }; VisibilityType ComputeVisibility( const CNavArea *area, bool isPVSValid, bool bCheckPVS = true, bool *pOutsidePVS = NULL ) const; // do actual line-of-sight traces to determine if any part of given area is visible from this area void SetupPVS( void ) const; bool IsInPVS( void ) const; // return true if this area is within the current PVS struct AreaBindInfo // for pointer loading and binding { union { CNavArea *area; unsigned int id; }; unsigned char attributes; // VisibilityType bool operator==( const AreaBindInfo &other ) const { return ( area == other.area ); } }; virtual bool IsEntirelyVisible( const Vector &eye, CBaseEntity *ignore = NULL ) const; // return true if entire area is visible from given eyepoint (CPU intensive) virtual bool IsPartiallyVisible( const Vector &eye, CBaseEntity *ignore = NULL ) const; // return true if any portion of the area is visible from given eyepoint (CPU intensive) virtual bool IsPotentiallyVisible( const CNavArea *area ) const; // return true if given area is potentially visible from somewhere in this area (very fast) virtual bool IsPotentiallyVisibleToTeam( int team ) const; // return true if any portion of this area is visible to anyone on the given team (very fast) virtual bool IsCompletelyVisible( const CNavArea *area ) const; // return true if given area is completely visible from somewhere in this area (very fast) virtual bool IsCompletelyVisibleToTeam( int team ) const; // return true if given area is completely visible from somewhere in this area by someone on the team (very fast) //------------------------------------------------------------------------------------- /** * Apply the functor to all navigation areas that are potentially * visible from this area. */ template < typename Functor > bool ForAllPotentiallyVisibleAreas( Functor &func ) { int i; ++s_nCurrVisTestCounter; for ( i=0; im_nVisTestCounter != s_nCurrVisTestCounter ); area->m_nVisTestCounter = s_nCurrVisTestCounter; if ( m_potentiallyVisibleAreas[i].attributes == NOT_VISIBLE ) continue; if ( func( area ) == false ) return false; } // for each inherited area if ( !m_inheritVisibilityFrom.area ) return true; CAreaBindInfoArray &inherited = m_inheritVisibilityFrom.area->m_potentiallyVisibleAreas; for ( i=0; im_nVisTestCounter == s_nCurrVisTestCounter ) continue; // Theoretically, this shouldn't matter. But, just in case! inherited[i].area->m_nVisTestCounter = s_nCurrVisTestCounter; if ( inherited[i].attributes == NOT_VISIBLE ) continue; if ( func( inherited[i].area ) == false ) return false; } return true; } //------------------------------------------------------------------------------------- /** * Apply the functor to all navigation areas that are * completely visible from somewhere in this area. */ template < typename Functor > bool ForAllCompletelyVisibleAreas( Functor &func ) { int i; ++s_nCurrVisTestCounter; for ( i=0; im_nVisTestCounter != s_nCurrVisTestCounter ); area->m_nVisTestCounter = s_nCurrVisTestCounter; if ( ( m_potentiallyVisibleAreas[i].attributes & COMPLETELY_VISIBLE ) == 0 ) continue; if ( func( area ) == false ) return false; } if ( !m_inheritVisibilityFrom.area ) return true; // for each inherited area CAreaBindInfoArray &inherited = m_inheritVisibilityFrom.area->m_potentiallyVisibleAreas; for ( i=0; im_nVisTestCounter == s_nCurrVisTestCounter ) continue; // Theoretically, this shouldn't matter. But, just in case! inherited[i].area->m_nVisTestCounter = s_nCurrVisTestCounter; if ( ( inherited[i].attributes & COMPLETELY_VISIBLE ) == 0 ) continue; if ( func( inherited[i].area ) == false ) return false; } return true; } protected: void UnblockArea( void ); private: friend class CNavMesh; friend class CNavLadder; static bool m_isReset; // if true, don't bother cleaning up in destructor since everything is going away /* m_nwCorner nw ne +-----------+ | +-->x | | | | | v | | y | | | +-----------+ sw se m_seCorner */ static unsigned int m_nextID; // used to allocate unique IDs unsigned int m_id; // unique area ID unsigned int m_debugid; Place m_place; // place descriptor CountdownTimer m_blockedTimer; // Throttle checks on our blocked state while blocked void UpdateBlockedFromNavBlockers( void ); // checks if nav blockers are still blocking the area bool m_isUnderwater; // true if the center of the area is underwater bool m_isBattlefront; float m_avoidanceObstacleHeight; // if nonzero, a prop is obstructing movement through this nav area CountdownTimer m_avoidanceObstacleTimer; // Throttle checks on our obstructed state while obstructed //- for hunting ------------------------------------------------------------------------------------- float m_clearedTimestamp[ MAX_NAV_TEAMS ]; // time this area was last "cleared" of enemies //- "danger" ---------------------------------------------------------------------------------------- float m_danger[ MAX_NAV_TEAMS ]; // danger of this area, allowing bots to avoid areas where they died in the past - zero is no danger float m_dangerTimestamp[ MAX_NAV_TEAMS ]; // time when danger value was set - used for decaying void DecayDanger( void ); //- hiding spots ------------------------------------------------------------------------------------ HidingSpotVector m_hidingSpots; bool IsHidingSpotCollision( const Vector &pos ) const; // returns true if an existing hiding spot is too close to given position //- encounter spots --------------------------------------------------------------------------------- SpotEncounterVector m_spotEncounters; // list of possible ways to move thru this area, and the spots to look at as we do void AddSpotEncounters( const CNavArea *from, NavDirType fromDir, const CNavArea *to, NavDirType toDir ); // add spot encounter data when moving from area to area float m_earliestOccupyTime[ MAX_NAV_TEAMS ]; // min time to reach this spot from spawn #ifdef DEBUG_AREA_PLAYERCOUNTS CUtlVector< int > m_playerEntIndices[ MAX_NAV_TEAMS ]; #endif //- lighting ---------------------------------------------------------------------------------------- float m_lightIntensity[ NUM_CORNERS ]; // 0..1 light intensity at corners //- A* pathfinding algorithm ------------------------------------------------------------------------ static unsigned int m_masterMarker; static CNavArea *m_openList; static CNavArea *m_openListTail; //- connections to adjacent areas ------------------------------------------------------------------- NavConnectVector m_incomingConnect[ NUM_DIRECTIONS ]; // a list of adjacent areas for each direction that connect TO us, but we have no connection back to them //--------------------------------------------------------------------------------------------------- CNavNode *m_node[ NUM_CORNERS ]; // nav nodes at each corner of the area void ResetNodes( void ); // nodes are going away as part of an incremental nav generation void Strip( void ); // remove "analyzed" data from nav area void FinishMerge( CNavArea *adjArea ); // recompute internal data once nodes have been adjusted during merge void MergeAdjacentConnections( CNavArea *adjArea ); // for merging with "adjArea" - pick up all of "adjArea"s connections void AssignNodes( CNavArea *area ); // assign internal nodes to the given area void FinishSplitEdit( CNavArea *newArea, NavDirType ignoreEdge ); // given the portion of the original area, update its internal data void CalcDebugID(); CNavArea *m_prevHash, *m_nextHash; // for hash table in CNavMesh void ConnectElevators( void ); // find elevator connections between areas int m_damagingTickCount; // this area is damaging through this tick count //- visibility -------------------------------------------------------------------------------------- void ComputeVisibilityToMesh( void ); // compute visibility to surrounding mesh void ResetPotentiallyVisibleAreas(); static void ComputeVisToArea( CNavArea *&pOtherArea ); #ifndef _X360 typedef CUtlVectorConservative CAreaBindInfoArray; // shaves 8 bytes off structure caused by need to support editing #else typedef CUtlVector CAreaBindInfoArray; // Need to use this on 360 to support external allocation pattern #endif AreaBindInfo m_inheritVisibilityFrom; // if non-NULL, m_potentiallyVisibleAreas becomes a list of additions and deletions (NOT_VISIBLE) to the list of this area CAreaBindInfoArray m_potentiallyVisibleAreas; // list of areas potentially visible from inside this area (after PostLoad(), use area portion of union) bool m_isInheritedFrom; // latch used during visibility inheritance computation const CAreaBindInfoArray &ComputeVisibilityDelta( const CNavArea *other ) const; // return a list of the delta between our visibility list and the given adjacent area uint32 m_nVisTestCounter; static uint32 s_nCurrVisTestCounter; }; typedef CUtlVector< CNavArea * > NavAreaVector; extern NavAreaVector TheNavAreas; //-------------------------------------------------------------------------------------------------------------- //-------------------------------------------------------------------------------------------------------------- // // Inlines // //-------------------------------------------------------------------------------------------------------------- inline float CNavArea::GetDangerDecayRate( void ) const { // one kill == 1.0, which we will forget about in two minutes return 1.0f / 120.0f; } //-------------------------------------------------------------------------------------------------------------- inline bool CNavArea::IsDegenerate( void ) const { return (m_nwCorner.x >= m_seCorner.x || m_nwCorner.y >= m_seCorner.y); } //-------------------------------------------------------------------------------------------------------------- inline CNavArea *CNavArea::GetAdjacentArea( NavDirType dir, int i ) const { for( int iter = 0; iter < m_connect[dir].Count(); ++iter ) { if (i == 0) return m_connect[dir][iter].area; --i; } return NULL; } //-------------------------------------------------------------------------------------------------------------- inline bool CNavArea::IsOpen( void ) const { return (m_openMarker == m_masterMarker) ? true : false; } //-------------------------------------------------------------------------------------------------------------- inline bool CNavArea::IsOpenListEmpty( void ) { Assert( (m_openList && m_openList->m_prevOpen == NULL) || m_openList == NULL ); return (m_openList) ? false : true; } //-------------------------------------------------------------------------------------------------------------- inline CNavArea *CNavArea::PopOpenList( void ) { Assert( (m_openList && m_openList->m_prevOpen == NULL) || m_openList == NULL ); if ( m_openList ) { CNavArea *area = m_openList; // disconnect from list area->RemoveFromOpenList(); area->m_prevOpen = NULL; area->m_nextOpen = NULL; Assert( (m_openList && m_openList->m_prevOpen == NULL) || m_openList == NULL ); return area; } Assert( (m_openList && m_openList->m_prevOpen == NULL) || m_openList == NULL ); return NULL; } //-------------------------------------------------------------------------------------------------------------- inline bool CNavArea::IsClosed( void ) const { if (IsMarked() && !IsOpen()) return true; return false; } //-------------------------------------------------------------------------------------------------------------- inline void CNavArea::AddToClosedList( void ) { Mark(); } //-------------------------------------------------------------------------------------------------------------- inline void CNavArea::RemoveFromClosedList( void ) { // since "closed" is defined as visited (marked) and not on open list, do nothing } //-------------------------------------------------------------------------------------------------------------- inline void CNavArea::SetClearedTimestamp( int teamID ) { m_clearedTimestamp[ teamID % MAX_NAV_TEAMS ] = gpGlobals->curtime; } //-------------------------------------------------------------------------------------------------------------- inline float CNavArea::GetClearedTimestamp( int teamID ) const { return m_clearedTimestamp[ teamID % MAX_NAV_TEAMS ]; } //-------------------------------------------------------------------------------------------------------------- inline float CNavArea::GetEarliestOccupyTime( int teamID ) const { return m_earliestOccupyTime[ teamID % MAX_NAV_TEAMS ]; } //-------------------------------------------------------------------------------------------------------------- inline bool CNavArea::IsDamaging( void ) const { return ( gpGlobals->tickcount <= m_damagingTickCount ); } //-------------------------------------------------------------------------------------------------------------- inline void CNavArea::MarkAsDamaging( float duration ) { m_damagingTickCount = gpGlobals->tickcount + TIME_TO_TICKS( duration ); } //-------------------------------------------------------------------------------------------------------------- inline bool CNavArea::HasAvoidanceObstacle( float maxObstructionHeight ) const { return m_avoidanceObstacleHeight > maxObstructionHeight; } //-------------------------------------------------------------------------------------------------------------- inline float CNavArea::GetAvoidanceObstacleHeight( void ) const { return m_avoidanceObstacleHeight; } //-------------------------------------------------------------------------------------------------------------- inline bool CNavArea::IsVisible( const Vector &eye, Vector *visSpot ) const { Vector corner; trace_t result; CTraceFilterNoNPCsOrPlayer traceFilter( NULL, COLLISION_GROUP_NONE ); const float offset = 0.75f * HumanHeight; // check center first UTIL_TraceLine( eye, GetCenter() + Vector( 0, 0, offset ), MASK_BLOCKLOS_AND_NPCS|CONTENTS_IGNORE_NODRAW_OPAQUE, &traceFilter, &result ); if (result.fraction == 1.0f) { // we can see this area if (visSpot) { *visSpot = GetCenter(); } return true; } for( int c=0; cz is not used. */ inline float CNavArea::GetZ( const Vector * RESTRICT pos ) const RESTRICT { return GetZ( pos->x, pos->y ); } inline float CNavArea::GetZ( const Vector & pos ) const RESTRICT { return GetZ( pos.x, pos.y ); } //-------------------------------------------------------------------------------------------------------------- /** * Return the coordinates of the area's corner. */ inline Vector CNavArea::GetCorner( NavCornerType corner ) const { // @TODO: Confirm compiler does the "right thing" in release builds, or change this function to to take a pointer [2/4/2009 tom] Vector pos; switch( corner ) { default: Assert( false && "GetCorner: Invalid type" ); case NORTH_WEST: return m_nwCorner; case NORTH_EAST: pos.x = m_seCorner.x; pos.y = m_nwCorner.y; pos.z = m_neZ; return pos; case SOUTH_WEST: pos.x = m_nwCorner.x; pos.y = m_seCorner.y; pos.z = m_swZ; return pos; case SOUTH_EAST: return m_seCorner; } } #endif // _NAV_AREA_H_