src/bmap.c

   1 /*
   2  * Copyright (C) Prikol Software 1996-1997
   3  * Copyright (C) Aleksey Volynskov 1996-1997
   4  * Copyright (C) <ARembo@gmail.com> 2011
   5  *
   6  * This file is part of the Doom2D PSX project.
   7  *
   8  * Doom2D PSX is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  * Doom2D PSX is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, see <http://www.gnu.org/licenses/> or
  19  * write to the Free Software Foundation, Inc.,
  20  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  21  */
  22
  23 #include "glob.h"
  24 #include "view.h"
  25 #include "bmap.h"
  26
  27 byte fld_need_remap = 1;
  28
  29 byte bmap[FLDH / 4][FLDW / 4];
  30
  31 void BM_mark(obj_t * o, byte f) {
  32   int x, y;
  33   int xs, ys, xe, ye;
  34
  35   if ((xs = (o->x - o->r) >> 5) < 0)
  36     xs = 0;
  37   if ((xe = (o->x + o->r) >> 5) >= FLDW / 4)
  38     xe = FLDW / 4 - 1;
  39   if ((ys = (o->y - o->h) >> 5) < 0)
  40     ys = 0;
  41   if ((ye = o->y >> 5) >= FLDH / 4)
  42     ye = FLDH / 4 - 1;
  43   for (y = ys; y <= ye; ++y) {
  44     for (x = xs; x <= xe; ++x)
  45       bmap[y][x] |= f;
  46   }
  47 }
  48
  49 void BM_clear(byte f) {
  50   int x, y;
  51
  52   for (x = 0; x < FLDW / 4; x++) {
  53     for (y = 0; y < FLDH / 4; y++)
  54       bmap[y][x] &= ~f;
  55   }
  56 }
  57
  58 void BM_remapfld(void) {
  59   int x, y;
  60
  61   BM_clear(BM_WALL);
  62   for (x = 0; x < FLDW; x++) {
  63     for (y = 0; y < FLDH; y++) {
  64       if ((fld[y][x] == 1) || (fld[y][x] == 2))
  65         bmap[y / 4][x / 4] |= BM_WALL;
  66     }
  67   }
  68   fld_need_remap = 0;
  69 }