rogue/rread.c

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2011-10-13 09:59:16 -06:00
/*
* Contains functions for dealing with things that happen in the
* future.
*
* @(#)rread.c 4.7 (Berkeley) 02/05/99
*/
#include <curses.h>
#include "netprot.h"
#define EMPTY 0
#define DAEMON -1
#define MAXDAEMONS 20
#define _X_ { EMPTY }
struct delayed_action {
int d_type;
void (*d_func)(int);
int d_arg;
int d_time;
} d_list[MAXDAEMONS] = {
_X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_,
_X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_,
};
/*
* d_slot:
* Find an empty slot in the daemon/fuse list
*/
struct delayed_action *
d_slot(void)
{
struct delayed_action *dev;
for (dev = d_list; dev < &d_list[MAXDAEMONS]; dev++)
if (dev->d_type == EMPTY)
return dev;
#ifdef MASTER
debug("Ran out of fuse slots");
#endif
return NULL;
}
/*
* find_slot:
* Find a particular slot in the table
*/
struct delayed_action *
find_slot(void (*func)(int))
{
struct delayed_action *dev;
for (dev = d_list; dev < &d_list[MAXDAEMONS]; 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)(int), int arg, int type)
{
struct delayed_action *dev;
dev = d_slot();
dev->d_type = type;
dev->d_func = func;
dev->d_arg = arg;
dev->d_time = DAEMON;
}
/*
* kill_daemon:
* Remove a daemon from the list
*/
void
kill_daemon(void (*func)(int))
{
struct delayed_action *dev;
if ((dev = find_slot(func)) == NULL)
return;
/*
* Take it out of the list
*/
dev->d_type = EMPTY;
}
/*
* do_daemons:
* Run all the daemons that are active with the current flag,
* passing the argument to the function.
*/
void
do_daemons(flag)
int flag;
{
struct delayed_action *dev;
/*
* Loop through the devil list
*/
for (dev = d_list; dev < &d_list[MAXDAEMONS]; dev++)
/*
* Executing each one, giving it the proper arguments
*/
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(void (*func)(int), int arg, int tm, int type)
{
struct delayed_action *wire;
wire = d_slot();
wire->d_type = type;
wire->d_func = func;
wire->d_arg = arg;
wire->d_time = tm;
}
/*
* lengthen:
* Increase the time until a fuse goes off
*/
void
lengthen(void (*func)(int), int xtime)
{
struct delayed_action *wire;
if ((wire = find_slot(func)) == NULL)
return;
wire->d_time += xtime;
}
/*
* extinguish:
* Put out a fuse
*/
void
extinguish(void (*func)(int))
{
struct delayed_action *wire;
if ((wire = find_slot(func)) == NULL)
return;
wire->d_type = EMPTY;
}
/*
* do_fuses:
* Decrement counters and start needed fuses
*/
void
do_fuses(int flag)
{
struct delayed_action *wire;
/*
* Step though the list
*/
for (wire = d_list; wire < &d_list[MAXDAEMONS]; 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;
(*wire->d_func)(wire->d_arg);
}
}