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view rogue4/list.c @ 227:696277507a2e
Rogue V4, V5: disable a cheat granting permanent monster detection.
In these two games, a potion of monster detection turns on the player's
SEEMONST flag. A fuse is set to call turn_see() to turn the flag back
off. But the save and restore functions do not recognize turn_see() and
fail to set the fuse up again.
When restoring, Rogue V4 merely sets the fuse's function to NULL and
leaves it burning. When it goes off, a segfault results. Rogue V5
clears all the fuse's fields, and the player retains the ability to see
all monsters on the level.
The save and restore code can now handle the fuse. The function used is
a new wrapper, turn_see_off(), which should lead to less problems with
daemons being multiple incompatible types.
Also, Rogue V4 and Super-Rogue now properly clear unrecognized daemon
and fuse slots when restoring a saved game.
author | John "Elwin" Edwards |
---|---|
date | Sat, 05 Mar 2016 12:10:20 -0500 |
parents | 1b73a8641b37 |
children |
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/* * Functions for dealing with linked lists of goodies * * @(#)list.c 4.7 (Berkeley) 12/19/81 * * 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 <stdlib.h> #include <curses.h> #include "rogue.h" /* * detach: * Takes an item out of whatever linked list it might be in */ void _detach(THING **list, THING *item) { if (*list == item) *list = next(item); if (prev(item) != NULL) item->l_prev->l_next = next(item); if (next(item) != NULL) item->l_next->l_prev = prev(item); item->l_next = NULL; item->l_prev = NULL; } /* * _attach: * add an item to the head of a list */ void _attach(THING **list, THING *item) { if (*list != NULL) { item->l_next = *list; (*list)->l_prev = item; item->l_prev = NULL; } else { item->l_next = NULL; item->l_prev = NULL; } *list = item; } /* * _free_list: * Throw the whole blamed thing away */ void _free_list(THING **ptr) { register THING *item; while (*ptr != NULL) { item = *ptr; *ptr = next(item); discard(item); } } /* * discard: * Free up an item */ void discard(THING *item) { total--; free((char *) item); } /* * new_item * Get a new item with a specified size */ THING * new_item(void) { register THING *item; if ((item = calloc(1, sizeof *item)) == NULL) msg("ran out of memory after %d items", total); else total++; item->l_next = item->l_prev = NULL; return item; }