apps/plugins/doom/d_think.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  *  MapObj data. Map Objects or mobjs are actors, entities,
  29  *  thinker, take-your-pick... anything that moves, acts, or
  30  *  suffers state changes of more or less violent nature.
  31  *
  32  *-----------------------------------------------------------------------------*/
  33
  34 #ifndef __D_THINK__
  35 #define __D_THINK__
  36
  37 #ifdef __GNUG__
  38 #pragma interface
  39 #endif
  40
  41 /*
  42  * Experimental stuff.
  43  * To compile this as "ANSI C with classes"
  44  *  we will need to handle the various
  45  *  action functions cleanly.
  46  */
  47 // killough 11/98: convert back to C instead of C++
  48 typedef  void (*actionf_t)();
  49 //typedef  void (*actionf_v)();
  50 //typedef  void (*actionf_p1)( void* );
  51 //typedef  void (*actionf_p2)( void*, void* );
  52
  53 /* Note: In d_deh.c you will find references to these
  54  * wherever code pointers and function handlers exist
  55  */
  56 /*
  57 typedef union
  58 {
  59   actionf_p1    acp1;
  60   actionf_v     acv;
  61   actionf_p2    acp2;
  62
  63 } actionf_t;
  64 */
  65
  66 /* Historically, "think_t" is yet another
  67  *  function pointer to a routine to handle
  68  *  an actor.
  69  */
  70 typedef actionf_t  think_t;
  71
  72
  73 /* Doubly linked list of actors. */
  74 typedef struct thinker_s
  75 {
  76    struct thinker_s*   prev;
  77    struct thinker_s*   next;
  78    think_t             function;
  79
  80    /* killough 8/29/98: we maintain thinkers in several equivalence classes,
  81     * according to various criteria, so as to allow quicker searches.
  82     */
  83
  84    struct thinker_s *cnext, *cprev; /* Next, previous thinkers in same class */
  85
  86    /* killough 11/98: count of how many other objects reference
  87     * this one using pointers. Used for garbage collection.
  88     */
  89    unsigned references;
  90 } thinker_t;
  91
  92 #endif