162 lines
4 KiB
C
Executable file
162 lines
4 KiB
C
Executable file
/*
|
|
===========================================================================
|
|
Copyright (C) 1999-2005 Id Software, Inc.
|
|
|
|
This file is part of Quake III Arena source code.
|
|
|
|
Quake III Arena 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 2 of the License,
|
|
or (at your option) any later version.
|
|
|
|
Quake III Arena 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 Foobar; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
===========================================================================
|
|
*/
|
|
// vis.h
|
|
|
|
#include "cmdlib.h"
|
|
#include "mathlib.h"
|
|
#include "bspfile.h"
|
|
|
|
#define MAX_PORTALS 32768
|
|
|
|
#define PORTALFILE "PRT1"
|
|
|
|
#define ON_EPSILON 0.1
|
|
|
|
//#define MREDEBUG
|
|
|
|
// seperator caching helps a bit
|
|
#define SEPERATORCACHE
|
|
|
|
// can't have more seperators than the max number of points on a winding
|
|
#define MAX_SEPERATORS 64
|
|
|
|
typedef struct
|
|
{
|
|
vec3_t normal;
|
|
float dist;
|
|
} plane_t;
|
|
|
|
#define MAX_POINTS_ON_WINDING 64
|
|
#define MAX_POINTS_ON_FIXED_WINDING 12
|
|
|
|
typedef struct
|
|
{
|
|
int numpoints;
|
|
vec3_t points[MAX_POINTS_ON_FIXED_WINDING]; // variable sized
|
|
} winding_t;
|
|
|
|
winding_t *NewWinding (int points);
|
|
void FreeWinding (winding_t *w);
|
|
winding_t *CopyWinding (winding_t *w);
|
|
|
|
|
|
typedef struct passage_s
|
|
{
|
|
struct passage_s *next;
|
|
byte cansee[1]; //all portals that can be seen through this passage
|
|
} passage_t;
|
|
|
|
typedef enum {stat_none, stat_working, stat_done} vstatus_t;
|
|
typedef struct
|
|
{
|
|
int num;
|
|
qboolean hint; // true if this portal was created from a hint splitter
|
|
qboolean removed;
|
|
plane_t plane; // normal pointing into neighbor
|
|
int leaf; // neighbor
|
|
|
|
vec3_t origin; // for fast clip testing
|
|
float radius;
|
|
|
|
winding_t *winding;
|
|
vstatus_t status;
|
|
byte *portalfront; // [portals], preliminary
|
|
byte *portalflood; // [portals], intermediate
|
|
byte *portalvis; // [portals], final
|
|
|
|
int nummightsee; // bit count on portalflood for sort
|
|
passage_t *passages; // there are just as many passages as there
|
|
// are portals in the leaf this portal leads to
|
|
} vportal_t;
|
|
|
|
#define MAX_PORTALS_ON_LEAF 128
|
|
typedef struct leaf_s
|
|
{
|
|
int numportals;
|
|
int merged;
|
|
vportal_t *portals[MAX_PORTALS_ON_LEAF];
|
|
} leaf_t;
|
|
|
|
|
|
typedef struct pstack_s
|
|
{
|
|
byte mightsee[MAX_PORTALS/8]; // bit string
|
|
struct pstack_s *next;
|
|
leaf_t *leaf;
|
|
vportal_t *portal; // portal exiting
|
|
winding_t *source;
|
|
winding_t *pass;
|
|
|
|
winding_t windings[3]; // source, pass, temp in any order
|
|
int freewindings[3];
|
|
|
|
plane_t portalplane;
|
|
int depth;
|
|
#ifdef SEPERATORCACHE
|
|
plane_t seperators[2][MAX_SEPERATORS];
|
|
int numseperators[2];
|
|
#endif
|
|
} pstack_t;
|
|
|
|
typedef struct
|
|
{
|
|
vportal_t *base;
|
|
int c_chains;
|
|
pstack_t pstack_head;
|
|
} threaddata_t;
|
|
|
|
|
|
|
|
extern int numportals;
|
|
extern int portalclusters;
|
|
|
|
extern vportal_t *portals;
|
|
extern leaf_t *leafs;
|
|
|
|
extern int c_portaltest, c_portalpass, c_portalcheck;
|
|
extern int c_portalskip, c_leafskip;
|
|
extern int c_vistest, c_mighttest;
|
|
extern int c_chains;
|
|
|
|
extern byte *vismap, *vismap_p, *vismap_end; // past visfile
|
|
|
|
extern int testlevel;
|
|
|
|
extern byte *uncompressed;
|
|
|
|
extern int leafbytes, leaflongs;
|
|
extern int portalbytes, portallongs;
|
|
|
|
|
|
void LeafFlow (int leafnum);
|
|
|
|
|
|
void BasePortalVis(int portalnum);
|
|
void BetterPortalVis(int portalnum);
|
|
void PortalFlow(int portalnum);
|
|
void PassagePortalFlow(int portalnum);
|
|
void CreatePassages(int portalnum);
|
|
void PassageFlow(int portalnum);
|
|
|
|
extern vportal_t *sorted_portals[MAX_MAP_PORTALS*2];
|
|
|
|
int CountBits (byte *bits, int numbits);
|