forked from FWGS/Paranoia2
131 lines
2.7 KiB
C
131 lines
2.7 KiB
C
/***
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*
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* Copyright (c) 1996-2002, 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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#include "stringlib.h"
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#include "filesystem.h"
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#include <windows.h>
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#define DEFAULT_FASTVIS false
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#define DEFAULT_TESTLEVEL 2
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#define DEFAULT_NOSORT false
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#define DEFAULT_FARPLANE 0
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#define MAX_PORTALS MAX_MAP_PORTALS
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#define VIS_EPSILON ON_EPSILON
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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_STACK_WINDING 24
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#define MAX_PORTALS_ON_LEAF 256
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#define MAX_SEPERATORS MAX_POINTS_ON_WINDING
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typedef struct
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{
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int numpoints;
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vec3_t p[MAX_POINTS_ON_STACK_WINDING]; // variable sized
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} winding_t;
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typedef enum
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{
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stat_none = 0,
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stat_working,
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stat_done
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} 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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vec3_t origin;
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vec_t radius;
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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 leaf_s
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{
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int numportals;
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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 *head;
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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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plane_t seperators[2][MAX_SEPERATORS];
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int numseperators[2];
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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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portal_t *base;
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pstack_t pstack_head;
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} threaddata_t;
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extern int g_numportals;
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extern int g_portalleafs;
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extern portal_t *g_sorted_portals[MAX_MAP_PORTALS*2];
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extern portal_t *g_portals;
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extern leaf_t *g_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_mightseeupdate;
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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 byte *g_uncompressed;
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extern int g_bitbytes;
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extern int g_bitlongs;
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extern vec_t g_farplane;
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void LeafFlow( int leafnum );
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void BasePortalVis( int threadnum );
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void PortalFlow( int portalnum, int threadnum = -1 );
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void PortalFlow( portal_t *p );
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void CalcAmbientSounds( void );
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//
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// winding.c
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//
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winding_t *AllocWinding( int points );
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void FreeWinding( winding_t *w );
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winding_t *ChopWindingEpsilon( winding_t *in, pstack_t *stack, plane_t *split, vec_t epsilon );
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void WindingPlane( winding_t *w, vec3_t normal, vec_t *dist );
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