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:Rembo project.
   7
   8    Doom2D:Rembo 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:Rembo 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) xs=0;
  36   if((xe=(o->x+o->r)>>5)>=FLDW/4) xe=FLDW/4-1;
  37   if((ys=(o->y-o->h)>>5)<0) ys=0;
  38   if((ye=o->y>>5)>=FLDH/4) ye=FLDH/4-1;
  39   for(y=ys;y<=ye;++y)
  40         for(x=xs;x<=xe;++x)
  41           bmap[y][x]|=f;
  42 }
  43
  44 void BM_clear(byte f)
  45 {
  46     int x,y;
  47     for(x=0; x<FLDW/4; x++)
  48         for (y=0; y<FLDH/4; y++)
  49             bmap[y][x]&=~f;
  50 }
  51
  52 void BM_remapfld(void)
  53 {
  54     BM_clear(BM_WALL);
  55     int x,y;
  56     for(x=0; x<FLDW; x++)
  57         for(y=0; y<FLDH; y++)
  58             if (fld[y][x] == 1 || fld[y][x] == 2)
  59                 bmap[y/4][x/4]|=BM_WALL;
  60     fld_need_remap = 0;
  61 }