view arogue5/daemon.c @ 296:000b1c5b8d63

UltraRogue: fix inventory collision after save and restore. Inventory letters are based on "identifiers" stored in objects' o_ident field. Identifiers are allocated by get_ident(), which keeps a list of objects that have them, to avoid giving the same identifier to multiple objects. The list is not stored in the savefile, so after restore, get_ident() was not aware of existing identifiers. This resulted in picked-up objects having the same inventory letters as objects restored from the file. The restore code now adds all objects with identifiers to the list.
author John "Elwin" Edwards
date Mon, 15 Jan 2018 20:20:35 -0500
parents b67b99f6c92b
children 0250220d8cdd
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/*
 * Contains functions for dealing with things that happen in the future.
 *
 * 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(void)
{
	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(void)
{
	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(void (*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.
 */
void
start_daemon(void (*func)(), void *arg, int type)
{
	reg struct delayed_action *dev;

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


/*
 * kill_daemon:
 *	Remove a daemon from the list
 */
void
kill_daemon(void (*func)())
{
	reg struct delayed_action *dev;
	reg int i;

	for (i = 0, dev = d_list; i < MAXDAEMONS; i++, dev++) {
		if (dev->d_type != EMPTY && func == 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 = 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.
 */
void
do_daemons(int flag)
{
	reg struct delayed_action *dev;

	/*
	 * Loop through the devil list
	 */
	for (dev = d_list; dev <= &d_list[MAXDAEMONS-1]; dev++)
	/*
	 * Executing each one, giving it the proper arguments
	 */
		if (dev->d_func != NULL && 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)(), void *arg, int time, int type)
{
	reg struct delayed_action *wire;

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


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

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


/*
 * extinguish:
 *	Put out a fuse
 */
void
extinguish(void (*func)())
{
	reg struct delayed_action *wire;

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


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

	/*
	 * Step though the list
	 */
	for (wire = f_list; wire <= &f_list[MAXFUSES-1]; wire++) {
	/*
	 * 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);
		fusecnt -= 1;
	    }
	}
}

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