/*
==============================================================================

                                 DOOM Retro
           The classic, refined DOOM source port. For Windows PC.

==============================================================================

    Copyright © 1993-2024 by id Software LLC, a ZeniMax Media company.
    Copyright © 2013-2024 by Brad Harding <mailto:brad@doomretro.com>.

    This file is a part of DOOM Retro.

    DOOM Retro 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 3 of the license, or (at your
    option) any later version.

    DOOM Retro 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 DOOM Retro. If not, see <https://www.gnu.org/licenses/>.

    DOOM is a registered trademark of id Software LLC, a ZeniMax Media
    company, in the US and/or other countries, and is used without
    permission. All other trademarks are the property of their respective
    holders. DOOM Retro is in no way affiliated with nor endorsed by
    id Software.

==============================================================================
*/

#pragma once

#if defined(__GNUG__)
#pragma interface
#endif

//
// Experimental stuff.
// To compile this as "ANSI C with classes"
//  we will need to handle the various
//  action functions cleanly.
//

// killough 11/98: convert back to C instead of C++
typedef void (*actionf_t)();

// Historically, "think_t" is yet another
//  function pointer to a routine to handle
//  an actor.
typedef actionf_t think_t;

// Doubly linked list of actors.
typedef struct thinker_s
{
    struct thinker_s    *prev;
    struct thinker_s    *next;
    think_t             function;

    // Next, previous thinkers in same class
    struct thinker_s    *cprev;
    struct thinker_s    *cnext;

    // killough 11/98: count of how many other objects reference
    // this one using pointers. Used for garbage collection.
    unsigned int        references;

    // [BH] active during menu
    bool                menu;
} thinker_t;
