bsp.c

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/*
Copyright (C) 1997-2001 Id Software, Inc.

This program 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.

This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

#include "map.h"
#include "bsp.h"

int entity_num;

dMapTile_t *curTile;
mapTiles_t mapTiles;

static void ProcessWorldModel (void)
{
    entity_t *e = &entities[0];

    brush_start = e->firstbrush;
    brush_end = brush_start + e->numbrushes;

    ClearBounds(worldMins, worldMaxs);

    /* This is set so the Emit* functions in writebsp.c work correctly. */
    curTile->nummodels = NUM_REGULAR_MODELS;

    /* process levels */
    RunSingleThreadOn(ProcessLevel, NUM_REGULAR_MODELS, config.verbosity >= VERB_NORMAL, "LEVEL");

    /* calculate routing */
    DoRouting();
}


static void ProcessSubModel (int entityNum)
{
    const entity_t *e;
    int start, end;
    tree_t *tree;
    bspbrush_t *list;
    vec3_t mins, maxs;

    BeginModel(entityNum);

    e = &entities[entityNum];
#if 0
    Com_Printf("Processing entity: %i into model %i (%s:%s)\n", entityNum, curTile->nummodels, e->epairs->key, e->epairs->value);
#endif

    start = e->firstbrush;
    end = start + e->numbrushes;

    mins[0] = mins[1] = mins[2] = -MAX_WORLD_WIDTH;
    maxs[0] = maxs[1] = maxs[2] = MAX_WORLD_WIDTH;

    /* every level (-1) */
    list = MakeBspBrushList(start, end, -1, mins, maxs);
    if (!config.nocsg)
        list = ChopBrushes(list);
    tree = BrushBSP(list, mins, maxs);
    assert(tree);
    assert(tree->headnode);
    if (tree->headnode->planenum == PLANENUM_LEAF)
        Sys_Error("No head node bmodel of %s (%i)\n", ValueForKey(e, "classname"), entityNum);
    MakeTreePortals(tree);
    MarkVisibleSides(tree, start, end);
    MakeFaces(tree->headnode);
    FixTjuncs(tree->headnode);
    curTile->models[curTile->nummodels].headnode = WriteBSP(tree->headnode);
    FreeTree(tree);

    EndModel();
}


void ProcessModels (const char *filename)
{
    BeginBSPFile();

    for (entity_num = 0; entity_num < num_entities; entity_num++) {
        if (!entities[entity_num].numbrushes)
            continue;

        Verb_Printf(VERB_EXTRA, "############### model %i ###############\n", curTile->nummodels);

        if (entity_num == 0)
            ProcessWorldModel();
        else
            ProcessSubModel(entity_num);

        if (!config.verboseentities)
            config.verbose = qfalse;    /* don't bother printing submodels */
    }

    EndBSPFile(filename);
}