view rogue4/prob.c @ 83:09db0cf536af

Properly handle invalid room references in savefiles. In all games, rs_write_room_reference() stored -1 for a nonexistent room, but rs_read_room_reference() did not check for out-of-bounds values, leading to pointers to rooms[-1], which sometimes caused crashes. rs_read_room_reference() has now been modified to use NULL instead. Some of the games required further changes to replace NULL with the pointer to the actual room. Others are capable of handling NULL for objects not in any room.
author John "Elwin" Edwards
date Thu, 08 Aug 2013 12:41:35 -0700
parents 9535a08ddc39
children
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/*
 *
 * Rogue: Exploring the Dungeons of Doom
 * Copyright (C) 1980, 1981, 1982 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"

# undef	max

# define	TRIES	10000

static char *sccsid = "@(#)prob.c	1.3 (Berkeley) 12/17/81";

main(ac, av)
int	ac;
char	**av;
{
	register unsigned int	prob, prob2, exp;
	register struct monster	*mp;
	register unsigned int	max, min, i;
	register unsigned int	max2, min2;

	printf("%17.17s  ----experience--- ----hit points---\n", "");
	printf("%17.17s  %7s %4s %4s %7s %4s %4s lvl\n", "monster", "avg", "min", "max", "avg", "min", "max", "max hp");
	seed = 0;
	for (mp = monsters; mp < &monsters[26]; mp++) {
		i = TRIES;
		prob2 = prob = 0;
		min2 = min = 30000;
		max2 = max = 0;
		while (i--) {
			if ((exp = roll(mp->m_stats.s_lvl, 8)) < min2)
				min2 = exp;
			if (exp > max2)
				max2 = exp;
			prob2 += exp;
			mp->m_stats.s_maxhp = exp;
			if ((exp = mp->m_stats.s_exp + exp_add(mp)) < min)
				min = exp;
			if (exp > max)
				max = exp;
			prob += exp;
		}
		printf("%17.17s: %7.2f %4d %4d %7.2f %4d %4d %3d\n", mp->m_name, ((double) prob) / TRIES, min, max, ((double) prob2) / TRIES, min2, max2, mp->m_stats.s_lvl);
		fflush(stdout);
	}
}

exp_add(mp)
register struct monster *mp;
{
    register unsigned int mod;

    if (mp->m_stats.s_lvl == 1)
	mod = mp->m_stats.s_maxhp / 8;
    else
	mod = mp->m_stats.s_maxhp / 6;
    if (mp->m_stats.s_lvl > 9)
	mod *= 20;
    else if (mp->m_stats.s_lvl > 6)
	mod *= 4;
    return mod;
}

/*
 * roll:
 *	roll a number of dice
 */
roll(number, sides)
register unsigned int number, sides;
{
    register unsigned int dtotal = 0;

    dtotal = number;
    while (number--)
	dtotal += rnd(sides);
    return dtotal;
}

/*
 * rnd:
 *	Pick a very random number.
 */


rnd(range)
register unsigned int range;
{

    return RN % range;
}