133 lines
5.6 KiB
C++
133 lines
5.6 KiB
C++
/*
|
|
===========================================================================
|
|
|
|
Doom 3 GPL Source Code
|
|
Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
|
|
|
|
This file is part of the Doom 3 GPL Source Code (?Doom 3 Source Code?).
|
|
|
|
Doom 3 Source Code is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
Doom 3 Source Code is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
|
|
|
|
If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
|
|
|
|
===========================================================================
|
|
*/
|
|
|
|
#ifndef __GAME_PVS_H__
|
|
#define __GAME_PVS_H__
|
|
|
|
/*
|
|
===================================================================================
|
|
|
|
PVS
|
|
|
|
Note: mirrors and other special view portals are not taken into account
|
|
|
|
===================================================================================
|
|
*/
|
|
|
|
|
|
typedef struct pvsHandle_s {
|
|
int i; // index to current pvs
|
|
unsigned int h; // handle for current pvs
|
|
} pvsHandle_t;
|
|
|
|
|
|
typedef struct pvsCurrent_s {
|
|
pvsHandle_t handle; // current pvs handle
|
|
byte * pvs; // current pvs bit string
|
|
} pvsCurrent_t;
|
|
|
|
#define MAX_CURRENT_PVS 8 // must be a power of 2
|
|
|
|
typedef enum {
|
|
PVS_NORMAL = 0, // PVS through portals taking portal states into account
|
|
PVS_ALL_PORTALS_OPEN = 1, // PVS through portals assuming all portals are open
|
|
PVS_CONNECTED_AREAS = 2 // PVS considering all topologically connected areas visible
|
|
} pvsType_t;
|
|
|
|
|
|
class idPVS {
|
|
public:
|
|
idPVS( void );
|
|
~idPVS( void );
|
|
// setup for the current map
|
|
void Init( void );
|
|
void Shutdown( void );
|
|
// get the area(s) the source is in
|
|
int GetPVSArea( const idVec3 &point ) const; // returns the area number
|
|
int GetPVSAreas( const idBounds &bounds, int *areas, int maxAreas ) const; // returns number of areas
|
|
// setup current PVS for the source
|
|
pvsHandle_t SetupCurrentPVS( const idVec3 &source, const pvsType_t type = PVS_NORMAL ) const;
|
|
pvsHandle_t SetupCurrentPVS( const idBounds &source, const pvsType_t type = PVS_NORMAL ) const;
|
|
pvsHandle_t SetupCurrentPVS( const int sourceArea, const pvsType_t type = PVS_NORMAL ) const;
|
|
pvsHandle_t SetupCurrentPVS( const int *sourceAreas, const int numSourceAreas, const pvsType_t type = PVS_NORMAL ) const;
|
|
pvsHandle_t MergeCurrentPVS( pvsHandle_t pvs1, pvsHandle_t pvs2 ) const;
|
|
void FreeCurrentPVS( pvsHandle_t handle ) const;
|
|
// returns true if the target is within the current PVS
|
|
bool InCurrentPVS( const pvsHandle_t handle, const idVec3 &target ) const;
|
|
bool InCurrentPVS( const pvsHandle_t handle, const idBounds &target ) const;
|
|
bool InCurrentPVS( const pvsHandle_t handle, const int targetArea ) const;
|
|
bool InCurrentPVS( const pvsHandle_t handle, const int *targetAreas, int numTargetAreas ) const;
|
|
// draw all portals that are within the PVS of the source
|
|
void DrawPVS( const idVec3 &source, const pvsType_t type = PVS_NORMAL ) const;
|
|
void DrawPVS( const idBounds &source, const pvsType_t type = PVS_NORMAL ) const;
|
|
// visualize the PVS the handle points to
|
|
void DrawCurrentPVS( const pvsHandle_t handle, const idVec3 &source ) const;
|
|
|
|
#if ASYNC_WRITE_PVS
|
|
void WritePVS( const pvsHandle_t handle, idBitMsg &msg );
|
|
void ReadPVS( const pvsHandle_t handle, const idBitMsg &msg );
|
|
#endif
|
|
|
|
#ifdef _D3XP
|
|
bool CheckAreasForPortalSky( const pvsHandle_t handle, const idVec3 &origin );
|
|
#endif
|
|
|
|
private:
|
|
int numAreas;
|
|
int numPortals;
|
|
bool * connectedAreas;
|
|
int * areaQueue;
|
|
byte * areaPVS;
|
|
// current PVS for a specific source possibly taking portal states (open/closed) into account
|
|
mutable pvsCurrent_t currentPVS[MAX_CURRENT_PVS];
|
|
// used to create PVS
|
|
int portalVisBytes;
|
|
int portalVisLongs;
|
|
int areaVisBytes;
|
|
int areaVisLongs;
|
|
struct pvsPortal_s *pvsPortals;
|
|
struct pvsArea_s * pvsAreas;
|
|
|
|
private:
|
|
int GetPortalCount( void ) const;
|
|
void CreatePVSData( void );
|
|
void DestroyPVSData( void );
|
|
void CopyPortalPVSToMightSee( void ) const;
|
|
void FloodFrontPortalPVS_r( struct pvsPortal_s *portal, int areaNum ) const;
|
|
void FrontPortalPVS( void ) const;
|
|
struct pvsStack_s * FloodPassagePVS_r( struct pvsPortal_s *source, const struct pvsPortal_s *portal, struct pvsStack_s *prevStack ) const;
|
|
void PassagePVS( void ) const;
|
|
void AddPassageBoundaries( const idWinding &source, const idWinding &pass, bool flipClip, idPlane *bounds, int &numBounds, int maxBounds ) const;
|
|
void CreatePassages( void ) const;
|
|
void DestroyPassages( void ) const;
|
|
int AreaPVSFromPortalPVS( void ) const;
|
|
void GetConnectedAreas( int srcArea, bool *connectedAreas ) const;
|
|
pvsHandle_t AllocCurrentPVS( unsigned int h ) const;
|
|
};
|
|
|
|
#endif /* !__GAME_PVS_H__ */
|