view xrogue/daemon.c @ 222:a666e4a034ed

Fix curses library detection. A custom autoconf macro searched for the curses library, and provided an option to use ncurses instead of a (presumably deficient) curses implementation. Unfortunately, some of the Makefiles ignored the search's results. Now that this is fixed, building against pdcurses should be easier too.
author John "Elwin" Edwards
date Fri, 12 Feb 2016 15:12:37 -0500
parents cadff8f047a1
children f54901b9c39b
line wrap: on
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/*
    daemon.c - functions for dealing with things that happen in the future
 
    XRogue: Expeditions into the Dungeons of Doom
    Copyright (C) 1991 Robert Pietkivitch
    All rights reserved.
    
    Based on "Advanced Rogue"
    Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka and AT&T
    All rights reserved.

    Based on "Rogue: Exploring the Dungeons of Doom"
    Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
    All rights reserved.
    
    See the file LICENSE.TXT for full copyright and licensing information.
*/

#include <curses.h>
#include "rogue.h"

#define EMPTY           0
#define DAEMON          -1

#define _X_ { EMPTY }

struct delayed_action d_list[MAXDAEMONS] = {
        _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_
};
struct delayed_action f_list[MAXFUSES] = {
        _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_,
        _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_
};

int demoncnt = 0;        /* number of active daemons */
int fusecnt = 0;


/*
 * d_slot:
 *      Find an empty slot in the daemon list
 */
struct delayed_action *
d_slot()
{
        reg int i;
        reg struct delayed_action *dev;

        for (i = 0, dev = d_list; i < MAXDAEMONS; i++, dev++)
                if (dev->d_type == EMPTY)
                        return dev;
        return NULL;
}

/*
 * f_slot:
 *      Find an empty slot in the fuses list
 */
struct delayed_action *
f_slot()
{
        reg int i;
        reg struct delayed_action *dev;

        for (i = 0, dev = f_list; i < MAXFUSES; i++, dev++)
                if (dev->d_type == EMPTY)
                        return dev;
        return NULL;
}

/*
 * find_slot:
 *      Find a particular slot in the table
 */

struct delayed_action *
find_slot(func)
reg int (*func)();
{
        reg int i;
        reg struct delayed_action *dev;

        for (i = 0, dev = f_list; i < MAXFUSES; i++, dev++)
                if (dev->d_type != EMPTY && func == dev->d_func)
                        return dev;
        return NULL;
}

/*
 * start_daemon:
 *      Start a daemon, takes a function.
 */

start_daemon(dfunc, arg, type)
reg VOID  *arg;
reg int type, (*dfunc)();
{
        reg struct delayed_action *dev;

        dev = d_slot();
        if (dev != NULL) {
                dev->d_type = type;
                dev->d_func = dfunc;
                dev->d_arg.vp = arg;
                dev->d_time = DAEMON;
                demoncnt += 1;                  /* update count */
        }
}

/*
 * kill_daemon:
 *      Remove a daemon from the list
 */

kill_daemon(dfunc)
reg int (*dfunc)();
{
        reg struct delayed_action *dev;
        reg int i;

        for (i = 0, dev = d_list; i < MAXDAEMONS; i++, dev++) {
                if (dev->d_type != EMPTY && dfunc == dev->d_func)
                        break;
        }
        if (i >= MAXDAEMONS) return; /* if not found, forget it */
        /*
         * Take it out of the list
         */
        dev->d_type = EMPTY;
		dev->d_arg.vp  = NULL;
		dev->d_func = NULL;
		dev->d_time = 0;

        demoncnt -= 1;                  /* update count */
}

/*
 * do_daemons:
 *      Run all the daemons that are active with the current flag,
 *      passing the argument to the function.
 */

do_daemons(flag)
reg int flag;
{
        struct delayed_action *dev;
        int i;

        /*
         * Loop through the devil list
         */
        for (i = 0; i < MAXDAEMONS; i++)
        {
            dev = &d_list[i];
        /*
         * Executing each one, giving it the proper arguments
         */
                if ((dev->d_type == flag) && (dev->d_time == DAEMON) && (dev->d_func != NULL))
                        (*dev->d_func)(dev->d_arg.vp);
        }
}

/*
 * fuse:
 *      Start a fuse to go off in a certain number of turns
 */

fuse(dfunc, arg, time, type)
VOID *arg;
reg int (*dfunc)(), time, type;
{
        reg struct delayed_action *wire;

        wire = f_slot();
        if (wire != NULL) {
                wire->d_type = type;
                wire->d_func = dfunc;
                wire->d_arg.vp = arg;
                wire->d_time = time;
                fusecnt += 1;                   /* update count */
        }
}

/*
 * lengthen:
 *      Increase the time until a fuse goes off
 */

lengthen(dfunc, xtime)
reg int (*dfunc)(), xtime;
{
        reg struct delayed_action *wire;

        if ((wire = find_slot(dfunc)) == NULL)
                return;
        wire->d_time += xtime;
}

/*
 * extinguish:
 *      Put out a fuse
 */

extinguish(dfunc)
reg int (*dfunc)();
{
        reg struct delayed_action *wire;

        if ((wire = find_slot(dfunc)) == NULL)
                return;
        wire->d_type = EMPTY;
		wire->d_func = NULL;
		wire->d_arg.vp = NULL;
		wire->d_time = 0;
        fusecnt -= 1;
}

/*
 * do_fuses:
 *      Decrement counters and start needed fuses
 */

do_fuses(flag)
reg int flag;
{
        struct delayed_action *wire;
        int i;

        /*
         * Step though the list
         */
        for (i = 0; i < MAXFUSES; i++) {
            wire = &f_list[i];
        /*
         * Decrementing counters and starting things we want.  We also need
         * to remove the fuse from the list once it has gone off.
         */
            if(flag == wire->d_type && wire->d_time > 0 &&
              --wire->d_time == 0) {
                wire->d_type = EMPTY;
				if (wire->d_func != NULL)
					(*wire->d_func)(wire->d_arg.vp);
                fusecnt -= 1;
            }
        }
}

/*
 * activity:
 *      Show wizard number of demaons and memory blocks used
 */

activity()
{
        msg("Daemons = %d : Fuses = %d : Memory Items = %d : Memory Used = %d",
            demoncnt,fusecnt,total,md_memused());
}