Mercurial > hg > early-roguelike
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 |
line wrap: on
line source
/* * * 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; }