forked from valve/halflife-sdk
141 lines
2.7 KiB
C
141 lines
2.7 KiB
C
/***
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*
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* Copyright (c) 1996-2001, Valve LLC. All rights reserved.
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*
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* This product contains software technology licensed from Id
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* Software, Inc. ("Id Technology"). Id Technology (c) 1996 Id Software, Inc.
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* All Rights Reserved.
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*
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****/
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// vis.h
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#include "cmdlib.h"
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#include "mathlib.h"
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#include "bspfile.h"
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#define MAX_PORTALS 32768
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#define PORTALFILE "PRT1"
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//#define ON_EPSILON 0.1
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typedef struct
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{
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vec3_t normal;
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float dist;
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} plane_t;
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#define MAX_POINTS_ON_WINDING 64
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#define MAX_POINTS_ON_FIXED_WINDING 12
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typedef struct
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{
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qboolean original; // don't free, it's part of the portal
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int numpoints;
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vec3_t points[MAX_POINTS_ON_FIXED_WINDING]; // variable sized
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} winding_t;
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winding_t *NewWinding (int points);
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void FreeWinding (winding_t *w);
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winding_t *ClipWinding (winding_t *in, plane_t *split, qboolean keepon);
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winding_t *CopyWinding (winding_t *w);
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typedef enum {stat_none, stat_working, stat_done} vstatus_t;
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typedef struct
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{
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plane_t plane; // normal pointing into neighbor
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int leaf; // neighbor
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winding_t *winding;
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vstatus_t status;
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byte *visbits;
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byte *mightsee;
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int nummightsee;
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int numcansee;
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} portal_t;
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typedef struct seperating_plane_s
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{
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struct seperating_plane_s *next;
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plane_t plane; // from portal is on positive side
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} sep_t;
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typedef struct passage_s
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{
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struct passage_s *next;
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int from, to; // leaf numbers
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sep_t *planes;
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} passage_t;
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#define MAX_PORTALS_ON_LEAF 256
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typedef struct leaf_s
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{
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int numportals;
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passage_t *passages;
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portal_t *portals[MAX_PORTALS_ON_LEAF];
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} leaf_t;
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typedef struct pstack_s
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{
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byte mightsee[MAX_MAP_LEAFS/8]; // bit string
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struct pstack_s *next;
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leaf_t *leaf;
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portal_t *portal; // portal exiting
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winding_t *source;
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winding_t *pass;
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winding_t windings[3]; // source, pass, temp in any order
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int freewindings[3];
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plane_t portalplane;
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} pstack_t;
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typedef struct
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{
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byte *leafvis; // bit string
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// byte fullportal[MAX_PORTALS/8]; // bit string
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portal_t *base;
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pstack_t pstack_head;
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} threaddata_t;
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#ifdef __alpha
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#include <pthread.h>
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extern pthread_mutex_t *my_mutex;
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#define LOCK pthread_mutex_lock (my_mutex)
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#define UNLOCK pthread_mutex_unlock (my_mutex)
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#else
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#define LOCK
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#define UNLOCK
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#endif
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extern int numportals;
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extern int portalleafs;
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extern portal_t *portals;
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extern leaf_t *leafs;
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extern int c_portaltest, c_portalpass, c_portalcheck;
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extern int c_portalskip, c_leafskip;
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extern int c_vistest, c_mighttest;
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extern int c_chains;
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extern byte *vismap, *vismap_p, *vismap_end; // past visfile
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extern qboolean showgetleaf;
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extern byte *uncompressed;
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extern int bitbytes;
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extern int bitlongs;
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void LeafFlow (int leafnum);
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void BasePortalVis (int threadnum);
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void PortalFlow (portal_t *p);
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void CalcAmbientSounds (void);
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