mirror of
https://github.com/alliedmodders/hl2sdk.git
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126 lines
2.9 KiB
C
126 lines
2.9 KiB
C
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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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/mathlib.h"
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#include "bsplib.h"
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#define MAX_PORTALS 65536
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#define PORTALFILE "PRT1"
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extern bool g_bUseRadius; // prototyping TF2, "radius vis" solution
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extern double g_VisRadius; // the radius for the TF2 "radius vis"
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struct plane_t
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{
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Vector normal;
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float dist;
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};
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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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struct winding_t
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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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Vector points[MAX_POINTS_ON_FIXED_WINDING]; // variable sized
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};
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winding_t *NewWinding (int points);
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void FreeWinding (winding_t *w);
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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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struct portal_t
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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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Vector origin; // for fast clip testing
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float radius;
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winding_t *winding;
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vstatus_t status;
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byte *portalfront; // [portals], preliminary
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byte *portalflood; // [portals], intermediate
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byte *portalvis; // [portals], final
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int nummightsee; // bit count on portalflood for sort
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};
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struct leaf_t
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{
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CUtlVector<portal_t *> portals;
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};
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struct pstack_t
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{
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byte mightsee[MAX_PORTALS/8]; // bit string
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pstack_t *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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};
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struct threaddata_t
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{
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portal_t *base;
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int c_chains;
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pstack_t pstack_head;
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};
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extern int g_numportals;
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extern int portalclusters;
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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 int testlevel;
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extern byte *uncompressed;
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extern int leafbytes, leaflongs;
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extern int portalbytes, portallongs;
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void LeafFlow (int leafnum);
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void BasePortalVis (int iThread, int portalnum);
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void BetterPortalVis (int portalnum);
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void PortalFlow (int iThread, int portalnum);
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void WritePortalTrace( const char *source );
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extern portal_t *sorted_portals[MAX_MAP_PORTALS*2];
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extern int g_TraceClusterStart, g_TraceClusterStop;
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int CountBits (byte *bits, int numbits);
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#define CheckBit( bitstring, bitNumber ) ( (bitstring)[ ((bitNumber) >> 3) ] & ( 1 << ( (bitNumber) & 7 ) ) )
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#define SetBit( bitstring, bitNumber ) ( (bitstring)[ ((bitNumber) >> 3) ] |= ( 1 << ( (bitNumber) & 7 ) ) )
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#define ClearBit( bitstring, bitNumber ) ( (bitstring)[ ((bitNumber) >> 3) ] &= ~( 1 << ( (bitNumber) & 7 ) ) )
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