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ioq3/q3map/vis.c

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/*
===========================================================================
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.c
#include "vis.h"
#include "threads.h"
#include "stdlib.h"
#ifdef _WIN32
#include "../libs/pakstuff.h"
#endif
#define VIS_HEADER_SIZE 8
extern char outbase[32];
int numportals;
int portalclusters;
int numfaces;
char inbase[32];
vportal_t *portals;
leaf_t *leafs;
vportal_t *faces;
leaf_t *faceleafs;
int c_portaltest, c_portalpass, c_portalcheck;
int leafbytes; // (portalclusters+63)>>3
int leaflongs;
int portalbytes, portallongs;
qboolean fastvis;
qboolean noPassageVis;
qboolean passageVisOnly;
qboolean mergevis;
qboolean nosort;
qboolean saveprt;
int testlevel = 2;
int totalvis;
vportal_t *sorted_portals[MAX_MAP_PORTALS*2];
void PassageMemory(void);
//=============================================================================
void PlaneFromWinding (winding_t *w, plane_t *plane)
{
vec3_t v1, v2;
// calc plane
VectorSubtract (w->points[2], w->points[1], v1);
VectorSubtract (w->points[0], w->points[1], v2);
CrossProduct (v2, v1, plane->normal);
VectorNormalize (plane->normal, plane->normal);
plane->dist = DotProduct (w->points[0], plane->normal);
}
/*
==================
NewWinding
==================
*/
winding_t *NewWinding (int points)
{
winding_t *w;
int size;
if (points > MAX_POINTS_ON_WINDING)
Error ("NewWinding: %i points", points);
size = (int)((winding_t *)0)->points[points];
w = malloc (size);
memset (w, 0, size);
return w;
}
void prl(leaf_t *l)
{
int i;
vportal_t *p;
plane_t pl;
for (i=0 ; i<l->numportals ; i++)
{
p = l->portals[i];
pl = p->plane;
_printf ("portal %4i to leaf %4i : %7.1f : (%4.1f, %4.1f, %4.1f)\n",(int)(p-portals),p->leaf,pl.dist, pl.normal[0], pl.normal[1], pl.normal[2]);
}
}
//=============================================================================
/*
=============
SortPortals
Sorts the portals from the least complex, so the later ones can reuse
the earlier information.
=============
*/
int PComp (const void *a, const void *b)
{
if ( (*(vportal_t **)a)->nummightsee == (*(vportal_t **)b)->nummightsee)
return 0;
if ( (*(vportal_t **)a)->nummightsee < (*(vportal_t **)b)->nummightsee)
return -1;
return 1;
}
void SortPortals (void)
{
int i;
for (i=0 ; i<numportals*2 ; i++)
sorted_portals[i] = &portals[i];
if (nosort)
return;
qsort (sorted_portals, numportals*2, sizeof(sorted_portals[0]), PComp);
}
/*
==============
LeafVectorFromPortalVector
==============
*/
int LeafVectorFromPortalVector (byte *portalbits, byte *leafbits)
{
int i, j, leafnum;
vportal_t *p;
int c_leafs;
for (i=0 ; i<numportals*2 ; i++)
{
if (portalbits[i>>3] & (1<<(i&7)) )
{
p = portals+i;
leafbits[p->leaf>>3] |= (1<<(p->leaf&7));
}
}
for (j = 0; j < portalclusters; j++)
{
leafnum = j;
while (leafs[leafnum].merged >= 0)
leafnum = leafs[leafnum].merged;
//if the merged leaf is visible then the original leaf is visible
if (leafbits[leafnum>>3] & (1<<(leafnum&7)))
{
leafbits[j>>3] |= (1<<(j&7));
}
}
c_leafs = CountBits (leafbits, portalclusters);
return c_leafs;
}
/*
===============
ClusterMerge
Merges the portal visibility for a leaf
===============
*/
void ClusterMerge (int leafnum)
{
leaf_t *leaf;
byte portalvector[MAX_PORTALS/8];
byte uncompressed[MAX_MAP_LEAFS/8];
int i, j;
int numvis, mergedleafnum;
vportal_t *p;
int pnum;
// OR together all the portalvis bits
mergedleafnum = leafnum;
while(leafs[mergedleafnum].merged >= 0)
mergedleafnum = leafs[mergedleafnum].merged;
memset (portalvector, 0, portalbytes);
leaf = &leafs[mergedleafnum];
for (i = 0; i < leaf->numportals; i++)
{
p = leaf->portals[i];
if (p->removed)
continue;
if (p->status != stat_done)
Error ("portal not done");
for (j=0 ; j<portallongs ; j++)
((long *)portalvector)[j] |= ((long *)p->portalvis)[j];
pnum = p - portals;
portalvector[pnum>>3] |= 1<<(pnum&7);
}
memset (uncompressed, 0, leafbytes);
uncompressed[mergedleafnum>>3] |= (1<<(mergedleafnum&7));
// convert portal bits to leaf bits
numvis = LeafVectorFromPortalVector (portalvector, uncompressed);
// if (uncompressed[leafnum>>3] & (1<<(leafnum&7)))
// _printf ("WARNING: Leaf portals saw into leaf\n");
// uncompressed[leafnum>>3] |= (1<<(leafnum&7));
numvis++; // count the leaf itself
totalvis += numvis;
qprintf ("cluster %4i : %4i visible\n", leafnum, numvis);
memcpy (visBytes + VIS_HEADER_SIZE + leafnum*leafbytes, uncompressed, leafbytes);
}
/*
==================
CalcPortalVis
==================
*/
void CalcPortalVis (void)
{
#ifdef MREDEBUG
_printf("%6d portals out of %d", 0, numportals*2);
//get rid of the counter
RunThreadsOnIndividual (numportals*2, qfalse, PortalFlow);
#else
RunThreadsOnIndividual (numportals*2, qtrue, PortalFlow);
#endif
}
/*
==================
CalcPassageVis
==================
*/
void CalcPassageVis(void)
{
PassageMemory();
#ifdef MREDEBUG
_printf("%6d portals out of %d", 0, numportals*2);
RunThreadsOnIndividual (numportals*2, qfalse, CreatePassages);
_printf("\n");
_printf("%6d portals out of %d", 0, numportals*2);
RunThreadsOnIndividual (numportals*2, qfalse, PassageFlow);
_printf("\n");
#else
RunThreadsOnIndividual (numportals*2, qtrue, CreatePassages);
RunThreadsOnIndividual (numportals*2, qtrue, PassageFlow);
#endif
}
/*
==================
CalcPassagePortalVis
==================
*/
void CalcPassagePortalVis(void)
{
PassageMemory();
#ifdef MREDEBUG
_printf("%6d portals out of %d", 0, numportals*2);
RunThreadsOnIndividual (numportals*2, qfalse, CreatePassages);
_printf("\n");
_printf("%6d portals out of %d", 0, numportals*2);
RunThreadsOnIndividual (numportals*2, qfalse, PassagePortalFlow);
_printf("\n");
#else
RunThreadsOnIndividual (numportals*2, qtrue, CreatePassages);
RunThreadsOnIndividual (numportals*2, qtrue, PassagePortalFlow);
#endif
}
/*
==================
CalcFastVis
==================
*/
void CalcFastVis(void)
{
int i;
// fastvis just uses mightsee for a very loose bound
for (i=0 ; i<numportals*2 ; i++)
{
portals[i].portalvis = portals[i].portalflood;
portals[i].status = stat_done;
}
}
/*
==================
CalcVis
==================
*/
void CalcVis (void)
{
int i;
RunThreadsOnIndividual (numportals*2, qtrue, BasePortalVis);
// RunThreadsOnIndividual (numportals*2, qtrue, BetterPortalVis);
SortPortals ();
if (fastvis) {
CalcFastVis();
}
else if ( noPassageVis ) {
CalcPortalVis();
}
else if ( passageVisOnly ) {
CalcPassageVis();
}
else {
CalcPassagePortalVis();
}
//
// assemble the leaf vis lists by oring and compressing the portal lists
//
_printf("creating leaf vis...\n");
for (i=0 ; i<portalclusters ; i++)
ClusterMerge (i);
_printf( "Total visible clusters: %i\n", totalvis );
_printf( "Average clusters visible: %i\n", totalvis / portalclusters );
}
/*
==================
SetPortalSphere
==================
*/
void SetPortalSphere (vportal_t *p)
{
int i;
vec3_t total, dist;
winding_t *w;
float r, bestr;
w = p->winding;
VectorCopy (vec3_origin, total);
for (i=0 ; i<w->numpoints ; i++)
{
VectorAdd (total, w->points[i], total);
}
for (i=0 ; i<3 ; i++)
total[i] /= w->numpoints;
bestr = 0;
for (i=0 ; i<w->numpoints ; i++)
{
VectorSubtract (w->points[i], total, dist);
r = VectorLength (dist);
if (r > bestr)
bestr = r;
}
VectorCopy (total, p->origin);
p->radius = bestr;
}
/*
=============
Winding_PlanesConcave
=============
*/
#define WCONVEX_EPSILON 0.2
int Winding_PlanesConcave(winding_t *w1, winding_t *w2,
vec3_t normal1, vec3_t normal2,
float dist1, float dist2)
{
int i;
if (!w1 || !w2) return qfalse;
// check if one of the points of winding 1 is at the front of the plane of winding 2
for (i = 0; i < w1->numpoints; i++)
{
if (DotProduct(normal2, w1->points[i]) - dist2 > WCONVEX_EPSILON) return qtrue;
}
// check if one of the points of winding 2 is at the front of the plane of winding 1
for (i = 0; i < w2->numpoints; i++)
{
if (DotProduct(normal1, w2->points[i]) - dist1 > WCONVEX_EPSILON) return qtrue;
}
return qfalse;
}
/*
============
TryMergeLeaves
============
*/
int TryMergeLeaves(int l1num, int l2num)
{
int i, j, k, n, numportals;
plane_t plane1, plane2;
leaf_t *l1, *l2;
vportal_t *p1, *p2;
vportal_t *portals[MAX_PORTALS_ON_LEAF];
for (k = 0; k < 2; k++)
{
if (k) l1 = &leafs[l1num];
else l1 = &faceleafs[l1num];
for (i = 0; i < l1->numportals; i++)
{
p1 = l1->portals[i];
if (p1->leaf == l2num) continue;
for (n = 0; n < 2; n++)
{
if (n) l2 = &leafs[l2num];
else l2 = &faceleafs[l2num];
for (j = 0; j < l2->numportals; j++)
{
p2 = l2->portals[j];
if (p2->leaf == l1num) continue;
//
plane1 = p1->plane;
plane2 = p2->plane;
if (Winding_PlanesConcave(p1->winding, p2->winding, plane1.normal, plane2.normal, plane1.dist, plane2.dist))
return qfalse;
}
}
}
}
for (k = 0; k < 2; k++)
{
if (k)
{
l1 = &leafs[l1num];
l2 = &leafs[l2num];
}
else
{
l1 = &faceleafs[l1num];
l2 = &faceleafs[l2num];
}
numportals = 0;
//the leaves can be merged now
for (i = 0; i < l1->numportals; i++)
{
p1 = l1->portals[i];
if (p1->leaf == l2num)
{
p1->removed = qtrue;
continue;
}
portals[numportals++] = p1;
}
for (j = 0; j < l2->numportals; j++)
{
p2 = l2->portals[j];
if (p2->leaf == l1num)
{
p2->removed = qtrue;
continue;
}
portals[numportals++] = p2;
}
for (i = 0; i < numportals; i++)
{
l2->portals[i] = portals[i];
}
l2->numportals = numportals;
l1->merged = l2num;
}
return qtrue;
}
/*
============
UpdatePortals
============
*/
void UpdatePortals(void)
{
int i;
vportal_t *p;
for (i = 0; i < numportals * 2; i++)
{
p = &portals[i];
if (p->removed)
continue;
while(leafs[p->leaf].merged >= 0)
p->leaf = leafs[p->leaf].merged;
}
}
/*
============
MergeLeaves
try to merge leaves but don't merge through hint splitters
============
*/
void MergeLeaves(void)
{
int i, j, nummerges, totalnummerges;
leaf_t *leaf;
vportal_t *p;
totalnummerges = 0;
do
{
nummerges = 0;
for (i = 0; i < portalclusters; i++)
{
leaf = &leafs[i];
//if this leaf is merged already
if (leaf->merged >= 0)
continue;
//
for (j = 0; j < leaf->numportals; j++)
{
p = leaf->portals[j];
//
if (p->removed)
continue;
//never merge through hint portals
if (p->hint)
continue;
if (TryMergeLeaves(i, p->leaf))
{
UpdatePortals();
nummerges++;
break;
}
}
}
totalnummerges += nummerges;
} while (nummerges);
_printf("%6d leaves merged\n", totalnummerges);
}
/*
============
TryMergeWinding
============
*/
#define CONTINUOUS_EPSILON 0.005
winding_t *TryMergeWinding (winding_t *f1, winding_t *f2, vec3_t planenormal)
{
vec_t *p1, *p2, *p3, *p4, *back;
winding_t *newf;
int i, j, k, l;
vec3_t normal, delta;
vec_t dot;
qboolean keep1, keep2;
//
// find a common edge
//
p1 = p2 = NULL; // stop compiler warning
j = 0; //
for (i = 0; i < f1->numpoints; i++)
{
p1 = f1->points[i];
p2 = f1->points[(i+1) % f1->numpoints];
for (j = 0; j < f2->numpoints; j++)
{
p3 = f2->points[j];
p4 = f2->points[(j+1) % f2->numpoints];
for (k = 0; k < 3; k++)
{
if (fabs(p1[k] - p4[k]) > 0.1)//EQUAL_EPSILON) //ME
break;
if (fabs(p2[k] - p3[k]) > 0.1)//EQUAL_EPSILON) //ME
break;
} //end for
if (k==3)
break;
} //end for
if (j < f2->numpoints)
break;
} //end for
if (i == f1->numpoints)
return NULL; // no matching edges
//
// check slope of connected lines
// if the slopes are colinear, the point can be removed
//
back = f1->points[(i+f1->numpoints-1)%f1->numpoints];
VectorSubtract (p1, back, delta);
CrossProduct (planenormal, delta, normal);
VectorNormalize (normal, normal);
back = f2->points[(j+2)%f2->numpoints];
VectorSubtract (back, p1, delta);
dot = DotProduct (delta, normal);
if (dot > CONTINUOUS_EPSILON)
return NULL; // not a convex polygon
keep1 = (qboolean)(dot < -CONTINUOUS_EPSILON);
back = f1->points[(i+2)%f1->numpoints];
VectorSubtract (back, p2, delta);
CrossProduct (planenormal, delta, normal);
VectorNormalize (normal, normal);
back = f2->points[(j+f2->numpoints-1)%f2->numpoints];
VectorSubtract (back, p2, delta);
dot = DotProduct (delta, normal);
if (dot > CONTINUOUS_EPSILON)
return NULL; // not a convex polygon
keep2 = (qboolean)(dot < -CONTINUOUS_EPSILON);
//
// build the new polygon
//
newf = NewWinding (f1->numpoints + f2->numpoints);
// copy first polygon
for (k=(i+1)%f1->numpoints ; k != i ; k=(k+1)%f1->numpoints)
{
if (k==(i+1)%f1->numpoints && !keep2)
continue;
VectorCopy (f1->points[k], newf->points[newf->numpoints]);
newf->numpoints++;
}
// copy second polygon
for (l= (j+1)%f2->numpoints ; l != j ; l=(l+1)%f2->numpoints)
{
if (l==(j+1)%f2->numpoints && !keep1)
continue;
VectorCopy (f2->points[l], newf->points[newf->numpoints]);
newf->numpoints++;
}
return newf;
}
/*
============
MergeLeafPortals
============
*/
void MergeLeafPortals(void)
{
int i, j, k, nummerges, hintsmerged;
leaf_t *leaf;
vportal_t *p1, *p2;
winding_t *w;
nummerges = 0;
hintsmerged = 0;
for (i = 0; i < portalclusters; i++)
{
leaf = &leafs[i];
if (leaf->merged >= 0) continue;
for (j = 0; j < leaf->numportals; j++)
{
p1 = leaf->portals[j];
if (p1->removed)
continue;
for (k = j+1; k < leaf->numportals; k++)
{
p2 = leaf->portals[k];
if (p2->removed)
continue;
if (p1->leaf == p2->leaf)
{
w = TryMergeWinding(p1->winding, p2->winding, p1->plane.normal);
if (w)
{
FreeWinding(p1->winding);
p1->winding = w;
if (p1->hint && p2->hint)
hintsmerged++;
p1->hint |= p2->hint;
SetPortalSphere(p1);
p2->removed = qtrue;
nummerges++;
i--;
break;
}
}
}
if (k < leaf->numportals)
break;
}
}
_printf("%6d portals merged\n", nummerges);
_printf("%6d hint portals merged\n", hintsmerged);
}
/*
============
WritePortals
============
*/
int CountActivePortals(void)
{
int num, hints, j;
vportal_t *p;
num = 0;
hints = 0;
for (j = 0; j < numportals * 2; j++)
{
p = portals + j;
if (p->removed)
continue;
if (p->hint)
hints++;
num++;
}
_printf("%6d active portals\n", num);
_printf("%6d hint portals\n", hints);
return num;
}
/*
============
WritePortals
============
*/
void WriteFloat (FILE *f, vec_t v);
void WritePortals(char *filename)
{
int i, j, num;
FILE *pf;
vportal_t *p;
winding_t *w;
// write the file
pf = fopen (filename, "w");
if (!pf)
Error ("Error opening %s", filename);
num = 0;
for (j = 0; j < numportals * 2; j++)
{
p = portals + j;
if (p->removed)
continue;
// if (!p->hint)
// continue;
num++;
}
fprintf (pf, "%s\n", PORTALFILE);
fprintf (pf, "%i\n", 0);
fprintf (pf, "%i\n", num);// + numfaces);
fprintf (pf, "%i\n", 0);
for (j = 0; j < numportals * 2; j++)
{
p = portals + j;
if (p->removed)
continue;
// if (!p->hint)
// continue;
w = p->winding;
fprintf (pf,"%i %i %i ",w->numpoints, 0, 0);
fprintf (pf, "%d ", p->hint);
for (i=0 ; i<w->numpoints ; i++)
{
fprintf (pf,"(");
WriteFloat (pf, w->points[i][0]);
WriteFloat (pf, w->points[i][1]);
WriteFloat (pf, w->points[i][2]);
fprintf (pf,") ");
}
fprintf (pf,"\n");
}
/*
for (j = 0; j < numfaces; j++)
{
p = faces + j;
w = p->winding;
fprintf (pf,"%i %i %i ",w->numpoints, 0, 0);
fprintf (pf, "0 ");
for (i=0 ; i<w->numpoints ; i++)
{
fprintf (pf,"(");
WriteFloat (pf, w->points[i][0]);
WriteFloat (pf, w->points[i][1]);
WriteFloat (pf, w->points[i][2]);
fprintf (pf,") ");
}
fprintf (pf,"\n");
}*/
fclose (pf);
}
/*
============
LoadPortals
============
*/
void LoadPortals (char *name)
{
int i, j, hint;
vportal_t *p;
leaf_t *l;
char magic[80];
FILE *f;
int numpoints;
winding_t *w;
int leafnums[2];
plane_t plane;
if (!strcmp(name,"-"))
f = stdin;
else
{
f = fopen(name, "r");
if (!f)
Error ("LoadPortals: couldn't read %s\n",name);
}
if (fscanf (f,"%79s\n%i\n%i\n%i\n",magic, &portalclusters, &numportals, &numfaces) != 4)
Error ("LoadPortals: failed to read header");
if (strcmp(magic,PORTALFILE))
Error ("LoadPortals: not a portal file");
_printf ("%6i portalclusters\n", portalclusters);
_printf ("%6i numportals\n", numportals);
_printf ("%6i numfaces\n", numfaces);
// these counts should take advantage of 64 bit systems automatically
leafbytes = ((portalclusters+63)&~63)>>3;
leaflongs = leafbytes/sizeof(long);
portalbytes = ((numportals*2+63)&~63)>>3;
portallongs = portalbytes/sizeof(long);
// each file portal is split into two memory portals
portals = malloc(2*numportals*sizeof(vportal_t));
memset (portals, 0, 2*numportals*sizeof(vportal_t));
leafs = malloc(portalclusters*sizeof(leaf_t));
memset (leafs, 0, portalclusters*sizeof(leaf_t));
for (i = 0; i < portalclusters; i++)
leafs[i].merged = -1;
numVisBytes = VIS_HEADER_SIZE + portalclusters*leafbytes;
((int *)visBytes)[0] = portalclusters;
((int *)visBytes)[1] = leafbytes;
for (i=0, p=portals ; i<numportals ; i++)
{
if (fscanf (f, "%i %i %i ", &numpoints, &leafnums[0], &leafnums[1]) != 3)
Error ("LoadPortals: reading portal %i", i);
if (numpoints > MAX_POINTS_ON_WINDING)
Error ("LoadPortals: portal %i has too many points", i);
if ( (unsigned)leafnums[0] > portalclusters
|| (unsigned)leafnums[1] > portalclusters)
Error ("LoadPortals: reading portal %i", i);
if (fscanf (f, "%i ", &hint) != 1)
Error ("LoadPortals: reading hint state");
w = p->winding = NewWinding (numpoints);
w->numpoints = numpoints;
for (j=0 ; j<numpoints ; j++)
{
double v[3];
int k;
// scanf into double, then assign to vec_t
// so we don't care what size vec_t is
if (fscanf (f, "(%lf %lf %lf ) "
, &v[0], &v[1], &v[2]) != 3)
Error ("LoadPortals: reading portal %i", i);
for (k=0 ; k<3 ; k++)
w->points[j][k] = v[k];
}
fscanf (f, "\n");
// calc plane
PlaneFromWinding (w, &plane);
// create forward portal
l = &leafs[leafnums[0]];
if (l->numportals == MAX_PORTALS_ON_LEAF)
Error ("Leaf with too many portals");
l->portals[l->numportals] = p;
l->numportals++;
p->num = i+1;
p->hint = hint;
p->winding = w;
VectorSubtract (vec3_origin, plane.normal, p->plane.normal);
p->plane.dist = -plane.dist;
p->leaf = leafnums[1];
SetPortalSphere (p);
p++;
// create backwards portal
l = &leafs[leafnums[1]];
if (l->numportals == MAX_PORTALS_ON_LEAF)
Error ("Leaf with too many portals");
l->portals[l->numportals] = p;
l->numportals++;
p->num = i+1;
p->hint = hint;
p->winding = NewWinding(w->numpoints);
p->winding->numpoints = w->numpoints;
for (j=0 ; j<w->numpoints ; j++)
{
VectorCopy (w->points[w->numpoints-1-j], p->winding->points[j]);
}
p->plane = plane;
p->leaf = leafnums[0];
SetPortalSphere (p);
p++;
}
faces = malloc(2*numfaces*sizeof(vportal_t));
memset (faces, 0, 2*numfaces*sizeof(vportal_t));
faceleafs = malloc(portalclusters*sizeof(leaf_t));
memset(faceleafs, 0, portalclusters*sizeof(leaf_t));
for (i = 0, p = faces; i < numfaces; i++)
{
if (fscanf (f, "%i %i ", &numpoints, &leafnums[0]) != 2)
Error ("LoadPortals: reading portal %i", i);
w = p->winding = NewWinding (numpoints);
w->numpoints = numpoints;
for (j=0 ; j<numpoints ; j++)
{
double v[3];
int k;
// scanf into double, then assign to vec_t
// so we don't care what size vec_t is
if (fscanf (f, "(%lf %lf %lf ) "
, &v[0], &v[1], &v[2]) != 3)
Error ("LoadPortals: reading portal %i", i);
for (k=0 ; k<3 ; k++)
w->points[j][k] = v[k];
}
fscanf (f, "\n");
// calc plane
PlaneFromWinding (w, &plane);
l = &faceleafs[leafnums[0]];
l->merged = -1;
if (l->numportals == MAX_PORTALS_ON_LEAF)
Error ("Leaf with too many faces");
l->portals[l->numportals] = p;
l->numportals++;
p->num = i+1;
p->winding = w;
// normal pointing out of the leaf
VectorSubtract (vec3_origin, plane.normal, p->plane.normal);
p->plane.dist = -plane.dist;
p->leaf = -1;
SetPortalSphere (p);
p++;
}
fclose (f);
}
/*
================
CalcPHS
Calculate the PHS (Potentially Hearable Set)
by ORing together all the PVS visible from a leaf
================
*/
void CalcPHS (void)
{
int i, j, k, l, index;
int bitbyte;
long *dest, *src;
byte *scan;
int count;
byte uncompressed[MAX_MAP_LEAFS/8];
_printf ("Building PHS...\n");
count = 0;
for (i=0 ; i<portalclusters ; i++)
{
scan = visBytes + i*leafbytes;
memcpy (uncompressed, scan, leafbytes);
for (j=0 ; j<leafbytes ; j++)
{
bitbyte = scan[j];
if (!bitbyte)
continue;
for (k=0 ; k<8 ; k++)
{
if (! (bitbyte & (1<<k)) )
continue;
// OR this pvs row into the phs
index = ((j<<3)+k);
if (index >= portalclusters)
Error ("Bad bit in PVS"); // pad bits should be 0
src = (long *)(visBytes + index*leafbytes);
dest = (long *)uncompressed;
for (l=0 ; l<leaflongs ; l++)
((long *)uncompressed)[l] |= src[l];
}
}
for (j=0 ; j<portalclusters ; j++)
if (uncompressed[j>>3] & (1<<(j&7)) )
count++;
// FIXME: copy it off
}
_printf ("Average clusters hearable: %i\n", count/portalclusters);
}
/*
===========
VisMain
===========
*/
int VisMain (int argc, char **argv)
{
char portalfile[1024];
char name[1024];
int i;
double start, end;
_printf ("---- vis ----\n");
verbose = qfalse;
for (i=1 ; i<argc ; i++) {
if (!strcmp(argv[i],"-threads")) {
numthreads = atoi (argv[i+1]);
i++;
} else if (!strcmp(argv[i],"-threads")) {
numthreads = atoi (argv[i+1]);
i++;
} else if (!strcmp(argv[i], "-fast")) {
_printf ("fastvis = true\n");
fastvis = qtrue;
} else if (!strcmp(argv[i], "-merge")) {
_printf ("merge = true\n");
mergevis = qtrue;
} else if (!strcmp(argv[i], "-nopassage")) {
_printf ("nopassage = true\n");
noPassageVis = qtrue;
} else if (!strcmp(argv[i], "-passageOnly")) {
_printf("passageOnly = true\n");
passageVisOnly = qtrue;
} else if (!strcmp(argv[i], "-level")) {
testlevel = atoi(argv[i+1]);
_printf ("testlevel = %i\n", testlevel);
i++;
} else if (!strcmp(argv[i], "-v")) {
_printf ("verbose = true\n");
verbose = qtrue;
} else if (!strcmp (argv[i],"-nosort")) {
_printf ("nosort = true\n");
nosort = qtrue;
} else if (!strcmp (argv[i],"-saveprt")) {
_printf ("saveprt = true\n");
saveprt = qtrue;
} else if (!strcmp (argv[i],"-tmpin")) {
strcpy (inbase, "/tmp");
} else if (!strcmp (argv[i],"-tmpout")) {
strcpy (outbase, "/tmp");
} else if (argv[i][0] == '-') {
Error ("Unknown option \"%s\"", argv[i]);
} else {
break;
}
}
if (i != argc - 1)
Error ("usage: vis [-threads #] [-level 0-4] [-fast] [-v] bspfile");
#ifdef MREDEBUG
start = clock();
#else
start = I_FloatTime ();
#endif
ThreadSetDefault ();
SetQdirFromPath (argv[i]);
#ifdef _WIN32
InitPakFile(gamedir, NULL);
#endif
// load the bsp
sprintf (name, "%s%s", inbase, ExpandArg(argv[i]));
StripExtension (name);
strcat (name, ".bsp");
_printf ("reading %s\n", name);
LoadBSPFile (name);
// load the portal file
sprintf (portalfile, "%s%s", inbase, ExpandArg(argv[i]));
StripExtension (portalfile);
strcat (portalfile, ".prt");
_printf ("reading %s\n", portalfile);
LoadPortals (portalfile);
if (mergevis)
{
MergeLeaves();
MergeLeafPortals();
}
CountActivePortals();
// WritePortals("maps/hints.prs");
_printf ("visdatasize:%i\n", numVisBytes);
CalcVis ();
// CalcPHS ();
// delete the prt file
if ( !saveprt ) {
remove( portalfile );
}
// write the bsp file
_printf ("writing %s\n", name);
WriteBSPFile (name);
#ifdef MREDEBUG
end = clock();
_printf ("%5.2f seconds elapsed\n", (end-start) / CLK_TCK);
#else
end = I_FloatTime ();
_printf ("%5.2f seconds elapsed\n", end-start);
#endif
return 0;
}
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