apps/plugins/doom/p_maputl.h

   1 /* Emacs style mode select   -*- C++ -*-
   2  *-----------------------------------------------------------------------------
   3  *
   4  *
   5  *  PrBoom a Doom port merged with LxDoom and LSDLDoom
   6  *  based on BOOM, a modified and improved DOOM engine
   7  *  Copyright (C) 1999 by
   8  *  id Software, Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman
   9  *  Copyright (C) 1999-2000 by
  10  *  Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze
  11  *
  12  *  This program is free software; you can redistribute it and/or
  13  *  modify it under the terms of the GNU General Public License
  14  *  as published by the Free Software Foundation; either version 2
  15  *  of the License, or (at your option) any later version.
  16  *
  17  *  This program is distributed in the hope that it will be useful,
  18  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  *  GNU General Public License for more details.
  21  *
  22  *  You should have received a copy of the GNU General Public License
  23  *  along with this program; if not, write to the Free Software
  24  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  25  *  02111-1307, USA.
  26  *
  27  * DESCRIPTION:
  28  *      Map utility functions
  29  *
  30  *-----------------------------------------------------------------------------*/
  31
  32 #ifndef __P_MAPUTL__
  33 #define __P_MAPUTL__
  34
  35 #include "r_defs.h"
  36
  37 /* mapblocks are used to check movement against lines and things */
  38 #define MAPBLOCKUNITS   128
  39 #define MAPBLOCKSIZE    (MAPBLOCKUNITS*FRACUNIT)
  40 #define MAPBLOCKSHIFT   (FRACBITS+7)
  41 #define MAPBMASK        (MAPBLOCKSIZE-1)
  42 #define MAPBTOFRAC      (MAPBLOCKSHIFT-FRACBITS)
  43
  44 #define PT_ADDLINES     1
  45 #define PT_ADDTHINGS    2
  46 #define PT_EARLYOUT     4
  47
  48 typedef struct {
  49    fixed_t     x;
  50    fixed_t     y;
  51    fixed_t     dx;
  52    fixed_t     dy;
  53 } divline_t;
  54
  55 typedef struct {
  56    fixed_t     frac;           /* along trace line */
  57    boolean     isaline;
  58    union {
  59       mobj_t* thing;
  60       line_t* line;
  61    } d;
  62 } intercept_t;
  63
  64 typedef boolean (*traverser_t)(intercept_t *in);
  65
  66 #define CONSTFUNC
  67
  68 fixed_t CONSTFUNC P_AproxDistance (fixed_t dx, fixed_t dy);
  69 int     CONSTFUNC P_PointOnLineSide (fixed_t x, fixed_t y, const line_t *line);
  70 int     CONSTFUNC P_PointOnDivlineSide (fixed_t x, fixed_t y,
  71                                         const divline_t *line);
  72 int     CONSTFUNC P_BoxOnLineSide (const fixed_t *tmbox, const line_t *ld);
  73 fixed_t CONSTFUNC P_InterceptVector (const divline_t *v2, const divline_t *v1);
  74
  75 void    P_MakeDivline (const line_t *li, divline_t *dl);
  76 void    P_LineOpening (const line_t *linedef);
  77 void    P_UnsetThingPosition(mobj_t *thing);
  78 void    P_SetThingPosition(mobj_t *thing);
  79 boolean P_BlockLinesIterator (int x, int y, boolean func(line_t *));
  80 boolean P_BlockThingsIterator(int x, int y, boolean func(mobj_t *));
  81 boolean CONSTFUNC ThingIsOnLine(const mobj_t *t, const line_t *l);  /* killough 3/15/98 */
  82 boolean P_PathTraverse(fixed_t x1, fixed_t y1, fixed_t x2, fixed_t y2,
  83                        int flags, boolean trav(intercept_t *));
  84
  85 extern fixed_t opentop;
  86 extern fixed_t openbottom;
  87 extern fixed_t openrange;
  88 extern fixed_t lowfloor;
  89 extern divline_t trace;
  90
  91 #endif  /* __P_MAPUTL__ */