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Xash3DArchive/xtools/bsplib/leakfile.c

113 lines
3.0 KiB
C

/* -------------------------------------------------------------------------------
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
=============
*/
void LeakFile( tree_t *tree )
{
vec3_t mid;
file_t *linefile;
char filename[MAX_SYSPATH];
node_t *node;
int count;
if( !tree->outside_node.occupied )
return;
MsgDev( D_NOTE, "--- LeakFile ---\n" );
// write the points to the file
com.sprintf( filename, "maps/%s.lin", source );
linefile = FS_Open( filename, "w" );
if( !linefile ) Sys_Error( "couldn't open %s\n", filename );
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 );
FS_Printf( linefile, "%f %f %f\n", mid[0], mid[1], mid[2] );
count++;
}
// add the occupant center
GetVectorForKey( node->occupant, "origin", mid );
FS_Printf( linefile, "%f %f %f\n", mid[0], mid[1], mid[2] );
MsgDev( D_INFO, "%9d point linefile\n", count + 1 );
FS_Close( linefile );
}