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worldspawn/tools/vmap/vis.c

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/* -------------------------------------------------------------------------------
Copyright (C) 1999-2007 id Software, Inc. and contributors.
For a list of contributors, see the accompanying CONTRIBUTORS file.
This file is part of GtkRadiant.
GtkRadiant 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.
GtkRadiant 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 GtkRadiant; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
----------------------------------------------------------------------------------
This code has been altered significantly from its original form, to support
several games based on the Quake III Arena engine, in the form of "Q3Map2."
------------------------------------------------------------------------------- */
/* marker */
#define VIS_C
/* dependencies */
#include "vmap.h"
void PlaneFromWinding( fixedWinding_t *w, visPlane_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 );
}
/*
NewFixedWinding()
returns a new fixed winding
ydnar: altered this a bit to reconcile multiply-defined winding_t
*/
fixedWinding_t *NewFixedWinding( int points ){
fixedWinding_t *w;
int size;
if ( points > MAX_POINTS_ON_WINDING ) {
Error( "NewWinding: %i points", points );
}
size = (int)( (size_t)( (fixedWinding_t *)0 )->points[points] );
w = safe_malloc( size );
memset( w, 0, size );
return w;
}
void prl( leaf_t *l ){
int i;
vportal_t *p;
visPlane_t pl;
for ( i = 0 ; i < l->numportals ; i++ )
{
p = l->portals[i];
pl = p->plane;
Sys_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 ( ( *(const vportal_t *const *)a )->nummightsee == ( *(const vportal_t *const *)b )->nummightsee ) {
return 0;
}
if ( ( *(const vportal_t *const *)a )->nummightsee < ( *(const vportal_t *const *)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
===============
*/
static int clustersizehistogram[MAX_MAP_LEAFS] = {0};
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)))
// Sys_Printf ("WARNING: Leaf portals saw into leaf\n");
// uncompressed[leafnum>>3] |= (1<<(leafnum&7));
numvis++; // count the leaf itself
//Sys_FPrintf( SYS_VRB,"cluster %4i : %4i visible\n", leafnum, numvis );
++clustersizehistogram[numvis];
memcpy( bspVisBytes + VIS_HEADER_SIZE + leafnum * leafbytes, uncompressed, leafbytes );
}
/*
==================
CalcPortalVis
==================
*/
void CalcPortalVis( void ){
#ifdef MREDEBUG
Sys_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
Sys_Printf( "\n--- CreatePassages (%d) ---\n", numportals * 2 );
RunThreadsOnIndividual( numportals * 2, qtrue, CreatePassages );
Sys_Printf( "\n--- PassageFlow (%d) ---\n", numportals * 2 );
RunThreadsOnIndividual( numportals * 2, qtrue, PassageFlow );
#endif
}
/*
==================
CalcPassagePortalVis
==================
*/
void CalcPassagePortalVis( void ){
PassageMemory();
#ifdef MREDEBUG
Sys_Printf( "%6d portals out of %d", 0, numportals * 2 );
RunThreadsOnIndividual( numportals * 2, qfalse, CreatePassages );
Sys_Printf( "\n" );
Sys_Printf( "%6d portals out of %d", 0, numportals * 2 );
RunThreadsOnIndividual( numportals * 2, qfalse, PassagePortalFlow );
Sys_Printf( "\n" );
#else
Sys_Printf( "\n--- CreatePassages (%d) ---\n", numportals * 2 );
RunThreadsOnIndividual( numportals * 2, qtrue, CreatePassages );
Sys_Printf( "\n--- PassagePortalFlow (%d) ---\n", numportals * 2 );
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, minvis, maxvis;
const char *value;
double mu, sigma, totalvis, totalvis2;
/* ydnar: rr2do2's farplane code */
farPlaneDist = 0.0f;
value = ValueForKey( &entities[ 0 ], "_farplanedist" ); /* proper '_' prefixed key */
if ( value[ 0 ] == '\0' ) {
value = ValueForKey( &entities[ 0 ], "fogclip" ); /* wolf compatibility */
}
if ( value[ 0 ] == '\0' ) {
value = ValueForKey( &entities[ 0 ], "distancecull" ); /* sof2 compatibility */
}
if ( value[ 0 ] != '\0' ) {
farPlaneDist = atof( value );
if ( farPlaneDist > 0.0f ) {
Sys_Printf( "farplane distance = %.1f\n", farPlaneDist );
}
else{
farPlaneDist = 0.0f;
}
}
Sys_Printf( "\n--- BasePortalVis (%d) ---\n", numportals * 2 );
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
//
Sys_Printf( "creating leaf vis...\n" );
for ( i = 0 ; i < portalclusters ; i++ )
ClusterMerge( i );
totalvis = 0;
totalvis2 = 0;
minvis = -1;
maxvis = -1;
for ( i = 0; i < MAX_MAP_LEAFS; ++i )
if ( clustersizehistogram[i] ) {
if ( debugCluster ) {
Sys_FPrintf( SYS_VRB, "%4i clusters have exactly %4i visible clusters\n", clustersizehistogram[i], i );
}
/* cast is to prevent integer overflow */
totalvis += ( (double) i ) * ( (double) clustersizehistogram[i] );
totalvis2 += ( (double) i ) * ( (double) i ) * ( (double) clustersizehistogram[i] );
if ( minvis < 0 ) {
minvis = i;
}
maxvis = i;
}
mu = totalvis / portalclusters;
sigma = sqrt( totalvis2 / portalclusters - mu * mu );
Sys_Printf( "Total clusters: %i\n", portalclusters );
Sys_Printf( "Total visible clusters: %.0f\n", totalvis );
Sys_Printf( "Average clusters visible: %.2f (%.3f%%/total)\n", mu, mu / portalclusters * 100.0 );
Sys_Printf( " Standard deviation: %.2f (%.3f%%/total, %.3f%%/avg)\n", sigma, sigma / portalclusters * 100.0, sigma / mu * 100.0 );
Sys_Printf( " Minimum: %i (%.3f%%/total, %.3f%%/avg)\n", minvis, minvis / (double) portalclusters * 100.0, minvis / mu * 100.0 );
Sys_Printf( " Maximum: %i (%.3f%%/total, %.3f%%/avg)\n", maxvis, maxvis / (double) portalclusters * 100.0, maxvis / mu * 100.0 );
}
/*
==================
SetPortalSphere
==================
*/
void SetPortalSphere( vportal_t *p ){
int i;
vec3_t total, dist;
fixedWinding_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( fixedWinding_t *w1, fixedWinding_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;
visPlane_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
/* ydnar: vmods: merge all non-hint portals */
if ( leaf->merged >= 0 && hint == qfalse ) {
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 );
Sys_Printf( "%6d leaves merged\n", totalnummerges );
}
/*
============
TryMergeWinding
============
*/
#define CONTINUOUS_EPSILON 0.005
fixedWinding_t *TryMergeWinding( fixedWinding_t *f1, fixedWinding_t *f2, vec3_t planenormal ){
vec_t *p1, *p2, *p3, *p4, *back;
fixedWinding_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 = NewFixedWinding( 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;
fixedWinding_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 ) {
free( p1->winding ); //% 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;
}
}
}
Sys_Printf( "%6d portals merged\n", nummerges );
Sys_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++;
}
Sys_Printf( "%6d active portals\n", num );
Sys_Printf( "%6d hint portals\n", hints );
return num;
}
/*
============
WritePortals
============
*/
void WriteFloat( FILE *f, vec_t v );
void WritePortals( char *portalpathfile ){
int i, j, num;
FILE *pf;
vportal_t *p;
fixedWinding_t *w;
// write the file
pf = fopen( portalpathfile, "w" );
if ( !pf ) {
Error( "Error opening %s", portalpathfile );
}
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, flags;
vportal_t *p;
leaf_t *l;
char magic[80];
FILE *f;
int numpoints;
fixedWinding_t *w;
int leafnums[2];
visPlane_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" );
}
Sys_Printf( "%6i portalclusters\n", portalclusters );
Sys_Printf( "%6i numportals\n", numportals );
Sys_Printf( "%6i numfaces\n", numfaces );
if ( numportals > MAX_PORTALS ) {
Error( "MAX_PORTALS" );
}
// 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 = safe_malloc( 2 * numportals * sizeof( vportal_t ) );
memset( portals, 0, 2 * numportals * sizeof( vportal_t ) );
leafs = safe_malloc( portalclusters * sizeof( leaf_t ) );
memset( leafs, 0, portalclusters * sizeof( leaf_t ) );
for ( i = 0; i < portalclusters; i++ )
leafs[i].merged = -1;
numBSPVisBytes = VIS_HEADER_SIZE + portalclusters * leafbytes;
if ( numBSPVisBytes > MAX_MAP_VISIBILITY ) {
Error( "MAX_MAP_VISIBILITY exceeded" );
}
( (int *)bspVisBytes )[0] = portalclusters;
( (int *)bspVisBytes )[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 ( leafnums[0] > portalclusters
|| leafnums[1] > portalclusters ) {
Error( "LoadPortals: reading portal %i", i );
}
if ( fscanf( f, "%i ", &flags ) != 1 ) {
Error( "LoadPortals: reading flags" );
}
w = p->winding = NewFixedWinding( 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];
}
if ( fscanf( f, "\n" ) != 0 ) {
// silence gcc warning
}
// 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 = (qboolean)(((flags & 1) != 0));
p->sky = (qboolean)(((flags & 2) != 0));
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 = NewFixedWinding( 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 = safe_malloc( 2 * numfaces * sizeof( vportal_t ) );
memset( faces, 0, 2 * numfaces * sizeof( vportal_t ) );
faceleafs = safe_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 = NewFixedWinding( 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];
}
if ( fscanf( f, "\n" ) != 0 ) {
// silence gcc warning
}
// 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 );
}
/*
===========
VisMain
===========
*/
int VisMain( int argc, char **argv ){
int i;
char portalFilePath[ 1024 ];
portalFilePath[0] = 0;
/* note it */
Sys_Printf( "--- Vis ---\n" );
/* process arguments */
for ( i = 1 ; i < ( argc - 1 ) ; i++ )
{
if ( !strcmp( argv[i], "-fast" ) ) {
Sys_Printf( "fastvis = true\n" );
fastvis = qtrue;
}
else if ( !strcmp( argv[i], "-merge" ) ) {
Sys_Printf( "merge = true\n" );
mergevis = qtrue;
}
else if ( !strcmp( argv[i], "-mergeportals" ) ) {
Sys_Printf( "mergeportals = true\n" );
mergevisportals = qtrue;
}
else if ( !strcmp( argv[i], "-nopassage" ) ) {
Sys_Printf( "nopassage = true\n" );
noPassageVis = qtrue;
}
else if ( !strcmp( argv[i], "-passageOnly" ) ) {
Sys_Printf( "passageOnly = true\n" );
passageVisOnly = qtrue;
}
else if ( !strcmp( argv[i],"-nosort" ) ) {
Sys_Printf( "nosort = true\n" );
nosort = qtrue;
}
else if ( !strcmp( argv[i],"-saveprt" ) ) {
Sys_Printf( "saveprt = true\n" );
saveprt = qtrue;
}
else if ( !strcmp( argv[ i ], "-v" ) ) {
debugCluster = qtrue;
Sys_Printf( "Extra verbous mode enabled\n" );
}
else if ( !strcmp( argv[i],"-tmpin" ) ) {
strcpy( inbase, "/tmp" );
}
else if ( !strcmp( argv[i],"-tmpout" ) ) {
strcpy( outbase, "/tmp" );
}
/* ydnar: -hint to merge all but hint portals */
else if ( !strcmp( argv[ i ], "-hint" ) ) {
Sys_Printf( "hint = true\n" );
hint = qtrue;
mergevis = qtrue;
}
else if ( !strcmp( argv[ i ], "-prtfile" ) )
{
strcpy( portalFilePath, argv[i + 1] );
i++;
Sys_Printf( "Use %s as portal file\n", portalFilePath );
}
else{
Sys_FPrintf( SYS_WRN, "WARNING: Unknown option \"%s\"\n", argv[ i ] );
}
}
if ( i != argc - 1 ) {
Error( "usage: vis [-threads #] [-fast] [-v] BSPFilePath" );
}
/* load the bsp */
sprintf( source, "%s%s", inbase, ExpandArg( argv[ i ] ) );
StripExtension( source );
strcat( source, ".bsp" );
Sys_Printf( "Loading %s\n", source );
LoadBSPFile( source );
/* load the portal file */
if (!portalFilePath[0]) {
sprintf( portalFilePath, "%s%s", inbase, ExpandArg( argv[ i ] ) );
StripExtension( portalFilePath );
strcat( portalFilePath, ".prt" );
}
Sys_Printf( "Loading %s\n", portalFilePath );
LoadPortals( portalFilePath );
/* ydnar: exit if no portals, hence no vis */
if ( numportals == 0 ) {
Sys_Printf( "No portals means no vis, exiting.\n" );
return 0;
}
/* ydnar: for getting far plane */
ParseEntities();
/* inject command line parameters */
InjectCommandLine( argv, 0, argc - 1 );
UnparseEntities();
if ( mergevis ) {
MergeLeaves();
}
if ( mergevis || mergevisportals ) {
MergeLeafPortals();
}
CountActivePortals();
/* WritePortals( "maps/hints.prs" );*/
Sys_Printf( "visdatasize:%i\n", numBSPVisBytes );
CalcVis();
/* delete the prt file */
if ( !saveprt ) {
remove( portalFilePath );
}
/* write the bsp file */
Sys_Printf( "Writing %s\n", source );
WriteBSPFile( source );
return 0;
}
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