view srogue/daemon.c @ 229:50b89f165a34

Use uniform return types for functions related to options. Functions for printing options now return void. Functions for setting options now return int. Argument types still vary, though converting all the option pointers to void* would be possible.
author John "Elwin" Edwards
date Sun, 06 Mar 2016 14:45:18 -0500
parents b67b99f6c92b
children
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/*
 * Contains functions for dealing with things that
 * happen in the future.
 *
 * @(#)daemon.c	9.0	(rdk)	 7/17/84
 *
 * Super-Rogue
 * Copyright (C) 1984 Robert D. Kindelberger
 * 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 "rogue.h"
#include "rogue.ext"

#define EMPTY 0
#define DAEMON -1

#define _X_ { 0, 0, 0, 0 }

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


/*
 * d_insert:
 *	Insert a function in the daemon list.
 */
struct delayed_action *
d_insert(void (*func)(), int arg, int type, int time)
{
	reg struct delayed_action *dev;

	if (demoncnt < MAXDAEMONS) {
		dev = &d_list[demoncnt];
		dev->d_type = type;
		dev->d_time = time;
		dev->d_func = func;
		dev->d_arg = arg;
		demoncnt += 1;
		return dev;
	}
	return NULL;
}

void
d_delete(struct delayed_action *wire)
{
	reg struct delayed_action *d1, *d2;

	for (d1 = d_list; d1 < &d_list[demoncnt]; d1++) {
		if (wire == d1) {
			for (d2 = d1 + 1; d2 < &d_list[demoncnt]; d2++)
				*d1++ = *d2;
			demoncnt -= 1;
			d1 = &d_list[demoncnt];
			d1->d_type = EMPTY;
			d1->d_func = EMPTY;
			return;
		}
	}
}
/*
 * find_slot:
 *	Find a particular slot in the table
 */
struct delayed_action *
find_slot(void (*func)())
{
	reg struct delayed_action *dev;

	for (dev = d_list; dev < &d_list[demoncnt]; dev++)
		if (dev->d_type != EMPTY && func == dev->d_func)
			return dev;
	return NULL;
}

/*
 * start_daemon:
 *	Start a daemon, takes a function.
 */
void
start_daemon(void (*func)(), int arg, int type)
{
	d_insert(func, arg, type, DAEMON);
}

/*
 * do_daemons:
 *	Run all the daemons that are active with the current
 *	flag, passing the argument to the function.
 */
void
do_daemons(int flag)
{
	reg struct delayed_action *dev;

	for (dev = d_list; dev < &d_list[demoncnt]; dev++)
		if (dev->d_type == flag && dev->d_time == DAEMON)
			(*dev->d_func)(dev->d_arg);
}

/*
 * fuse:
 *	Start a fuse to go off in a certain number of turns
 */
void
fuse(void (*func)(), int arg, int time)
{
	d_insert(func, arg, AFTER, time);
}

/*
 * lengthen:
 *	Increase the time until a fuse goes off
 */
void
lengthen(void (*func)(), int xtime)
{
	reg struct delayed_action *wire;

	for (wire = d_list; wire < &d_list[demoncnt]; wire++)
		if (wire->d_type != EMPTY && func == wire->d_func)
			wire->d_time += xtime;
}

/*
 * extinguish:
 *	Put out a fuse. Find all such fuses and kill them.
 */
void
extinguish(void (*func)())
{
	reg struct delayed_action *dev;

	for (dev = d_list; dev < &d_list[demoncnt]; dev++)
		if (dev->d_type != EMPTY && func == dev->d_func)
			d_delete(dev);
}

/*
 * do_fuses:
 *	Decrement counters and start needed fuses
 */
void
do_fuses(void)
{
	reg struct delayed_action *dev;

	for (dev = d_list; dev < &d_list[demoncnt]; dev++) {
		if (dev->d_type == AFTER && dev->d_time > DAEMON) {
			if (--dev->d_time == 0) {
				(*dev->d_func)(dev->d_arg);
				d_delete(dev);
			}
		}
	}
}


/*
 * activity:
 *	Show wizard number of demaons and memory blocks used
 */
void
activity(void)
{
	msg("Daemons = %d : Memory Items = %d : Memory Used = %d",
	    demoncnt,total,md_memused());
}