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https://git.code.sf.net/p/quake/quakeforge
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925300716b
It was added only because FitzQuake used it in its pre-bsp2 large-map support. That support has been hidden in bspfile.c for some time now. This doesn't gain much other than having one less type to worry about. Well tested on Conflagrant Rodent (the map that caused the need for mclipnode_t in the first place).
95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
/*
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clip_hull.c
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dynamic bsp clipping hull management
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Copyright (C) 2001 Bill Currie <bill@taniwha.org>
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Author: Bill Currie <bill@taniwha.org>
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Date: 2001/7/28
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program 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.
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See the 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 this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdlib.h>
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#include "QF/clip_hull.h"
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#include "QF/model.h"
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#include "mod_internal.h"
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VISIBLE clip_hull_t *
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MOD_Alloc_Hull (int nodes, int planes)
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{
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clip_hull_t *ch;
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int size, i;
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size = sizeof (hull_t);
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size += sizeof (dclipnode_t) * nodes + sizeof (plane_t) * planes;
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size *= MAX_MAP_HULLS;
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size += sizeof (clip_hull_t);
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ch = calloc (size, 1);
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if (!ch)
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return 0;
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ch->hulls[0] = (hull_t *) &ch[1];
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for (i = 1; i < MAX_MAP_HULLS; i++)
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ch->hulls[i] = &ch->hulls[i - 1][1];
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ch->hulls[0]->clipnodes = (dclipnode_t *) &ch->hulls[i - 1][1];
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ch->hulls[0]->planes = (plane_t *) &ch->hulls[0]->clipnodes[nodes];
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for (i = 1; i < MAX_MAP_HULLS; i++) {
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ch->hulls[i]->clipnodes =
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(dclipnode_t *) &ch->hulls[i - 1]->planes[planes];
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ch->hulls[i]->planes = (plane_t *) &ch->hulls[i]->clipnodes[nodes];
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}
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return ch;
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}
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VISIBLE void
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MOD_Free_Hull (clip_hull_t *ch)
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{
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free (ch);
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}
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static void
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recurse_clip_tree (hull_t *hull, int num, int depth)
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{
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dclipnode_t *node;
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if (num < 0) {
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if (depth > hull->depth)
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hull->depth = depth;
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return;
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}
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node = hull->clipnodes + num;
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recurse_clip_tree (hull, node->children[0], depth + 1);
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recurse_clip_tree (hull, node->children[1], depth + 1);
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}
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void
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Mod_FindClipDepth (hull_t *hull)
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{
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hull->depth = 0;
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if (hull->clipnodes) // no hull 3?
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recurse_clip_tree (hull, hull->firstclipnode, 1);
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}
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