156 lines
3.5 KiB
C
156 lines
3.5 KiB
C
/* -------------------------------------------------------------------------------
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Copyright (C) 1999-2007 id Software, Inc. and contributors.
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For a list of contributors, see the accompanying CONTRIBUTORS file.
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This file is part of GtkRadiant.
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GtkRadiant is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GtkRadiant is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GtkRadiant; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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----------------------------------------------------------------------------------
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This code has been altered significantly from its original form, to support
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several games based on the Quake III Arena engine, in the form of "Q3Map2."
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------------------------------------------------------------------------------- */
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/* marker */
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#define TREE_C
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/* dependencies */
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#include "vmap.h"
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void RemovePortalFromNode( portal_t *portal, node_t *l );
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node_t *NodeForPoint( node_t *node, vec3_t origin ){
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plane_t *plane;
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vec_t d;
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while ( node->planenum != PLANENUM_LEAF )
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{
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plane = &mapplanes[node->planenum];
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d = DotProduct( origin, plane->normal ) - plane->dist;
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if ( d >= 0 ) {
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node = node->children[0];
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}
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else{
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node = node->children[1];
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}
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}
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return node;
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}
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/*
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=============
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FreeTreePortals_r
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=============
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*/
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void FreeTreePortals_r( node_t *node ){
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portal_t *p, *nextp;
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int s;
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// free children
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if ( node->planenum != PLANENUM_LEAF ) {
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FreeTreePortals_r( node->children[0] );
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FreeTreePortals_r( node->children[1] );
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}
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// free portals
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for ( p = node->portals; p; p = nextp )
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{
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s = ( p->nodes[1] == node );
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nextp = p->next[s];
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RemovePortalFromNode( p, p->nodes[!s] );
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FreePortal( p );
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}
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node->portals = NULL;
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}
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/*
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=============
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FreeTree_r
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=============
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*/
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void FreeTree_r( node_t *node ){
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// free children
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if ( node->planenum != PLANENUM_LEAF ) {
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FreeTree_r( node->children[0] );
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FreeTree_r( node->children[1] );
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}
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// free bspbrushes
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FreeBrushList( node->brushlist );
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// free the node
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if ( node->volume ) {
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FreeBrush( node->volume );
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}
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free( node );
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}
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/*
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=============
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FreeTree
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=============
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*/
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void FreeTree( tree_t *tree ){
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FreeTreePortals_r( tree->headnode );
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FreeTree_r( tree->headnode );
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free( tree );
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}
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//===============================================================
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void PrintTree_r( node_t *node, int depth ){
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int i;
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plane_t *plane;
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brush_t *bb;
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for ( i = 0; i < depth; i++ )
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Sys_Printf( " " );
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if ( node->planenum == PLANENUM_LEAF ) {
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if ( !node->brushlist ) {
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Sys_Printf( "NULL\n" );
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}
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else
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{
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for ( bb = node->brushlist; bb; bb = bb->next )
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Sys_Printf( "%d ", bb->original->brushNum );
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Sys_Printf( "\n" );
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}
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return;
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}
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plane = &mapplanes[node->planenum];
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Sys_Printf( "#%d (%5.2f %5.2f %5.2f):%5.2f\n", node->planenum,
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plane->normal[0], plane->normal[1], plane->normal[2],
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plane->dist );
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PrintTree_r( node->children[0], depth + 1 );
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PrintTree_r( node->children[1], depth + 1 );
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}
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