gtkradiant/tools/quake3/q3map2/leakfile.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 LEAKFILE_C
/* dependencies */
#include "q3map2.h"
/*
==============================================================================
LEAK FILE GENERATION
Save out name.line for qe3 to read
==============================================================================
*/
/*
=============
LeakFile
Finds the shortest possible chain of portals
that leads from the outside leaf to a specifically
occupied leaf
TTimo: builds a polyline xml node
=============
*/
xmlNodePtr LeakFile( tree_t *tree ){
vec3_t mid;
FILE *linefile;
char filename[1024];
node_t *node;
int count;
xmlNodePtr xml_node, point;
if ( !tree->outside_node.occupied ) {
return NULL;
}
Sys_FPrintf( SYS_VRB,"--- LeakFile ---\n" );
//
// write the points to the file
//
sprintf( filename, "%s.lin", source );
linefile = fopen( filename, "w" );
if ( !linefile ) {
Error( "Couldn't open %s\n", filename );
}
xml_node = xmlNewNode( NULL, "polyline" );
count = 0;
node = &tree->outside_node;
while ( node->occupied > 1 )
{
int next;
portal_t *p, *nextportal;
node_t *nextnode;
int s;
// find the best portal exit
next = node->occupied;
for ( p = node->portals ; p ; p = p->next[!s] )
{
s = ( p->nodes[0] == node );
if ( p->nodes[s]->occupied
&& p->nodes[s]->occupied < next ) {
nextportal = p;
nextnode = p->nodes[s];
next = nextnode->occupied;
}
}
node = nextnode;
WindingCenter( nextportal->winding, mid );
fprintf( linefile, "%f %f %f\n", mid[0], mid[1], mid[2] );
point = xml_NodeForVec( mid );
xmlAddChild( xml_node, point );
count++;
}
// add the occupant center
GetVectorForKey( node->occupant, "origin", mid );
fprintf( linefile, "%f %f %f\n", mid[0], mid[1], mid[2] );
point = xml_NodeForVec( mid );
xmlAddChild( xml_node, point );
Sys_FPrintf( SYS_VRB, "%9d point linefile\n", count + 1 );
fclose( linefile );
return xml_node;
}