Mercurial > hg > early-roguelike
view srogue/daemon.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 | 94a0d9dd5ce1 |
children | b67b99f6c92b |
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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(int (*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(int (*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(int (*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(int (*func)(), int arg, int time) { d_insert(func, arg, AFTER, time); } /* * lengthen: * Increase the time until a fuse goes off */ void lengthen(int (*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(int (*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()); }