prtfile.c

/*
===========================================================================

Return to Castle Wolfenstein single player GPL Source Code
Copyright (C) 1999-2010 id Software LLC, a ZeniMax Media company. 

This file is part of the Return to Castle Wolfenstein single player GPL Source Code (“RTCW SP Source Code”).  

RTCW SP 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 3 of the License, or
(at your option) any later version.

RTCW SP 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 RTCW SP Source Code.  If not, see <http://www.gnu.org/licenses/>.

In addition, the RTCW SP Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the RTCW SP Source Code.  If not, please request a copy in writing from id Software at the address below.

If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.

===========================================================================
*/

// NO LONGER USED
#if 0
#include "qbsp.h"

extern dleaf_t dleafs[MAX_MAP_LEAFS];
/*
==============================================================================

PORTAL FILE GENERATION

Save out name.prt for qvis to read
==============================================================================
*/


#define PORTALFILE  "PRT1"

FILE    *pf;
int num_visclusters;                    // clusters the player can be in
int num_visportals;

void WriteFloat2( FILE *f, vec_t v ) {
	if ( fabs( v - Q_rint( v ) ) < 0.001 ) {
		fprintf( f,"%i ",(int)Q_rint( v ) );
	} else {
		fprintf( f,"%f ",v );
	}
}

/*
=================
WritePortalFile_r
=================
*/
void WritePortalFile_r( node_t *node ) {
	int i, s;
	portal_t    *p;
	winding_t   *w;
	vec3_t normal;
	vec_t dist;

	// decision node
	if ( node->planenum != PLANENUM_LEAF && !node->detail_seperator ) {
		WritePortalFile_r( node->children[0] );
		WritePortalFile_r( node->children[1] );
		return;
	}

	if ( node->contents & CONTENTS_SOLID ) {
		return;
	}

	for ( p = node->portals ; p ; p = p->next[s] )
	{
		w = p->winding;
		s = ( p->nodes[1] == node );
		if ( w && p->nodes[0] == node ) {
			if ( !Portal_VisFlood( p ) ) {
				continue;
			}
			// write out to the file

			// sometimes planes get turned around when they are very near
			// the changeover point between different axis.  interpret the
			// plane the same way vis will, and flip the side orders if needed
			// FIXME: is this still relevent?
			WindingPlane( w, normal, &dist );
			if ( DotProduct( p->plane.normal, normal ) < 0.99 ) { // backwards...
				fprintf( pf,"%i %i %i ",w->numpoints, p->nodes[1]->cluster, p->nodes[0]->cluster );
			} else {
				fprintf( pf,"%i %i %i ",w->numpoints, p->nodes[0]->cluster, p->nodes[1]->cluster );
			}
			for ( i = 0 ; i < w->numpoints ; i++ )
			{
				fprintf( pf,"(" );
				WriteFloat2( pf, w->p[i][0] );
				WriteFloat2( pf, w->p[i][1] );
				WriteFloat2( pf, w->p[i][2] );
				fprintf( pf,") " );
			}
			fprintf( pf,"\n" );
		}
	}

}

/*
================
FillLeafNumbers_r

All of the leafs under node will have the same cluster
================
*/
void FillLeafNumbers_r( node_t *node, int num ) {
	if ( node->planenum == PLANENUM_LEAF ) {
		if ( node->contents & CONTENTS_SOLID ) {
			node->cluster = -1;
		} else {
			node->cluster = num;
		}
		return;
	}
	node->cluster = num;
	FillLeafNumbers_r( node->children[0], num );
	FillLeafNumbers_r( node->children[1], num );
}

/*
================
NumberLeafs_r
================
*/
void NumberLeafs_r( node_t *node ) {
	portal_t    *p;

	if ( node->planenum != PLANENUM_LEAF && !node->detail_seperator ) { // decision node
		node->cluster = -99;
		NumberLeafs_r( node->children[0] );
		NumberLeafs_r( node->children[1] );
		return;
	}

	// either a leaf or a detail cluster

	if ( node->contents & CONTENTS_SOLID ) { // solid block, viewpoint never inside
		node->cluster = -1;
		return;
	}

	FillLeafNumbers_r( node, num_visclusters );
	num_visclusters++;

	// count the portals
	for ( p = node->portals ; p ; )
	{
		if ( p->nodes[0] == node ) {      // only write out from first leaf
			if ( Portal_VisFlood( p ) ) {
				num_visportals++;
			}
			p = p->next[0];
		} else {
			p = p->next[1];
		}
	}

}


/*
================
CreateVisPortals_r
================
*/
void CreateVisPortals_r( node_t *node ) {
	// stop as soon as we get to a detail_seperator, which
	// means that everything below is in a single cluster
	if ( node->planenum == PLANENUM_LEAF || node->detail_seperator ) {
		return;
	}

	MakeNodePortal( node );
	SplitNodePortals( node );

	CreateVisPortals_r( node->children[0] );
	CreateVisPortals_r( node->children[1] );
}

/*
================
FinishVisPortals_r
================
*/
void FinishVisPortals2_r( node_t *node ) {
	if ( node->planenum == PLANENUM_LEAF ) {
		return;
	}

	MakeNodePortal( node );
	SplitNodePortals( node );

	FinishVisPortals2_r( node->children[0] );
	FinishVisPortals2_r( node->children[1] );
}

void FinishVisPortals_r( node_t *node ) {
	if ( node->planenum == PLANENUM_LEAF ) {
		return;
	}

	if ( node->detail_seperator ) {
		FinishVisPortals2_r( node );
		return;
	}

	FinishVisPortals_r( node->children[0] );
	FinishVisPortals_r( node->children[1] );
}


int clusterleaf;
void SaveClusters_r( node_t *node ) {
	if ( node->planenum == PLANENUM_LEAF ) {
		dleafs[clusterleaf++].cluster = node->cluster;
		return;
	}
	SaveClusters_r( node->children[0] );
	SaveClusters_r( node->children[1] );
}

/*
================
WritePortalFile
================
*/
void WritePortalFile( tree_t *tree ) {
	char filename[1024];
	node_t *headnode;

	qprintf( "--- WritePortalFile ---\n" );

	headnode = tree->headnode;
	num_visclusters = 0;
	num_visportals = 0;

	Tree_FreePortals_r( headnode );

	MakeHeadnodePortals( tree );

	CreateVisPortals_r( headnode );

// set the cluster field in every leaf and count the total number of portals

	NumberLeafs_r( headnode );

// write the file
	sprintf( filename, "%s.prt", source );
	printf( "writing %s\n", filename );
	pf = fopen( filename, "w" );
	if ( !pf ) {
		Error( "Error opening %s", filename );
	}

	fprintf( pf, "%s\n", PORTALFILE );
	fprintf( pf, "%i\n", num_visclusters );
	fprintf( pf, "%i\n", num_visportals );

	qprintf( "%5i visclusters\n", num_visclusters );
	qprintf( "%5i visportals\n", num_visportals );

	WritePortalFile_r( headnode );

	fclose( pf );

	// we need to store the clusters out now because ordering
	// issues made us do this after writebsp...
	clusterleaf = 1;
	SaveClusters_r( headnode );
}
#endif