void setup_new_commands (object_t * dest, object_t * item)
{
object_t *next_ob, *ob;
/*
* Setup the new commands. The order is very important, as commands in
* the room should override commands defined by the room. Beware that
* init() in the room may have moved 'item' !
*
* The call of init() should really be done by the object itself (except in
* the -o mode). It might be too slow, though :-(
*/
if (item->flags & O_ENABLE_COMMANDS) {
save_command_giver(item);
(void) apply(APPLY_INIT, dest, 0, ORIGIN_DRIVER);
restore_command_giver();
if (item->super != dest)
return;
}
/*
* Run init of the item once for every present user, and for the
* environment (which can be a user).
*/
for (ob = dest->contains; ob; ob = next_ob) {
next_ob = ob->next_inv;
if (ob == item)
continue;
if (ob->flags & O_DESTRUCTED)
error("An object was destructed at call of " APPLY_INIT "()\n");
if (ob->flags & O_ENABLE_COMMANDS) {
save_command_giver(ob);
(void) apply(APPLY_INIT, item, 0, ORIGIN_DRIVER);
restore_command_giver();
if (dest != item->super)
return;
}
if (item->flags & O_DESTRUCTED) /* marion */
error("The object to be moved was destructed at call of " APPLY_INIT "()\n");
if (ob->flags & O_DESTRUCTED) /* Alaron */
error("An object was destructed at call of " APPLY_INIT "()\n");
if (item->flags & O_ENABLE_COMMANDS) {
save_command_giver(item);
(void) apply(APPLY_INIT, ob, 0, ORIGIN_DRIVER);
restore_command_giver();
if (dest != item->super)
return;
}
}
if (dest->flags & O_DESTRUCTED) /* marion */
error("The destination to move to was destructed at call of " APPLY_INIT "()\n");
if (item->flags & O_DESTRUCTED) /* Alaron */
error("The object to be moved was destructed at call of " APPLY_INIT "()\n");
if (dest->flags & O_ENABLE_COMMANDS) {
save_command_giver(dest);
(void) apply(APPLY_INIT, item, 0, ORIGIN_DRIVER);
restore_command_giver();
}
}
static void notify_no_command (void)
{
union string_or_func p;
svalue_t *v;
if (!command_giver || !command_giver->interactive)
return;
p = command_giver->interactive->default_err_message;
if (command_giver->interactive->iflags & NOTIFY_FAIL_FUNC) {
save_command_giver(command_giver);
v = call_function_pointer(p.f, 0);
restore_command_giver();
free_funp(p.f);
if (command_giver && command_giver->interactive) {
if (v && v->type == T_STRING) {
tell_object(command_giver, v->u.string, SVALUE_STRLEN(v));
}
command_giver->interactive->iflags &= ~NOTIFY_FAIL_FUNC;
command_giver->interactive->default_err_message.s = 0;
}
} else {
if (p.s) {
tell_object(command_giver, p.s, strlen(p.s));
free_string(p.s);
command_giver->interactive->default_err_message.s = 0;
} else {
tell_object(command_giver, default_fail_message, strlen(default_fail_message));
}
}
}
/*
* Take a user command and parse it.
* The command can also come from a NPC.
* Beware that 'str' can be modified and extended !
*/
int parse_command (char * str, object_t * ob)
{
int res;
/* disallow users to issue commands containing ansi escape codes */
#if defined(NO_ANSI) && !defined(STRIP_BEFORE_PROCESS_INPUT)
char *c;
for (c = str; *c; c++) {
if (*c == 27) {
*c = ' '; /* replace ESC with ' ' */
}
}
#endif
save_command_giver(ob);
res = user_parser(str);
restore_command_giver();
return res;
}
static int user_parser (char * buff)
{
char verb_buff[MAX_VERB_BUFF];
sentence_t *s;
char *p;
int length;
char *user_verb = 0;
int where;
int save_illegal_sentence_action;
debug(d_flag, ("cmd [/%s]: %s\n", command_giver->obname, buff));
/* strip trailing spaces. */
for (p = buff + strlen(buff) - 1; p >= buff; p--) {
if (*p != ' ')
break;
*p = '\0';
}
if (buff[0] == '\0')
return 0;
length = p - buff + 1;
p = strchr(buff, ' ');
if (p == 0) {
user_verb = findstring(buff);
} else {
*p = '\0';
user_verb = findstring(buff);
*p = ' ';
length = p - buff;
}
if (!user_verb) {
/* either an xverb or a verb without a specific add_action */
user_verb = buff;
}
/*
* copy user_verb into a static character buffer to be pointed to by
* last_verb.
*/
strncpy(verb_buff, user_verb, MAX_VERB_BUFF - 1);
if (p) {
int pos;
pos = p - buff;
if (pos < MAX_VERB_BUFF) {
verb_buff[pos] = '\0';
}
}
save_illegal_sentence_action = illegal_sentence_action;
illegal_sentence_action = 0;
for (s = command_giver->sent; s; s = s->next) {
svalue_t *ret;
object_t *command_object;
if (s->flags & (V_NOSPACE | V_SHORT)) {
if (strncmp(buff, s->verb, strlen(s->verb)) != 0)
continue;
} else {
/* note: if was add_action(blah, "") then accept it */
if (s->verb[0] && (user_verb != s->verb))
continue;
}
/*
* Now we have found a special sentence !
*/
if (!(s->flags & V_FUNCTION))
debug(d_flag, ("Local command %s on /%s",
s->function.s, s->ob->obname));
if (s->flags & V_NOSPACE) {
int l1 = strlen(s->verb);
int l2 = strlen(verb_buff);
if (l1 < l2)
last_verb = verb_buff + l1;
else
last_verb = "";
} else {
if (!s->verb[0] || (s->flags & V_SHORT))
last_verb = verb_buff;
else
last_verb = s->verb;
}
/*
* If the function is static and not defined by current object, then
* it will fail. If this is called directly from user input, then
* the origin is the driver and it will be allowed.
*/
where = (current_object ? ORIGIN_EFUN : ORIGIN_DRIVER);
/*
* Remember the object, to update moves.
*/
command_object = s->ob;
save_command_giver(command_giver);
if (s->flags & V_NOSPACE) {
copy_and_push_string(&buff[strlen(s->verb)]);
} else if (buff[length] == ' ') {
copy_and_push_string(&buff[length + 1]);
} else {
push_undefined();
}
if (s->flags & V_FUNCTION) {
ret = call_function_pointer(s->function.f, 1);
} else {
if (s->function.s[0] == APPLY___INIT_SPECIAL_CHAR)
error("Illegal function name.\n");
ret = apply(s->function.s, s->ob, 1, where);
}
/* s may be dangling at this point */
restore_command_giver();
last_verb = 0;
/* was this the right verb? */
if (ret == 0) {
/* is it still around? Otherwise, ignore this ...
it moved somewhere or dested itself */
if (s == command_giver->sent) {
char buf[256];
if (s->flags & V_FUNCTION) {
sprintf(buf, "Verb '%s' bound to uncallable function pointer.\n", s->verb);
error(buf);
} else {
sprintf(buf, "Function for verb '%s' not found.\n",
s->verb);
error(buf);
}
}
}
if (ret && (ret->type != T_NUMBER || ret->u.number != 0)) {
#ifdef PACKAGE_MUDLIB_STATS
if (command_giver && command_giver->interactive
#ifndef NO_WIZARDS
&& !(command_giver->flags & O_IS_WIZARD)
#endif
)
add_moves(&command_object->stats, 1);
#endif
if (!illegal_sentence_action)
illegal_sentence_action = save_illegal_sentence_action;
return 1;
}
if (illegal_sentence_action) {
switch (illegal_sentence_action) {
case 1:
error("Illegal to call remove_action() [caller was /%s] from a verb returning zero.\n", illegal_sentence_ob->obname);
case 2:
error("Illegal to move or destruct an object (/%s) defining actions from a verb function which returns zero.\n", illegal_sentence_ob->obname);
}
}
}
notify_no_command();
illegal_sentence_action = save_illegal_sentence_action;
return 0;
}
void call_heart_beat()
{
object_t *ob;
heart_beat_t *curr_hb;
error_context_t econ;
current_interactive = 0;
if ((num_hb_to_do = num_hb_objs)) {
num_hb_calls++;
heart_beat_index = 0;
save_context(&econ);
while (1) {
ob = (curr_hb = &heart_beats[heart_beat_index])->ob;
DEBUG_CHECK(!(ob->flags & O_HEART_BEAT),
"Heartbeat not set in object on heartbeat list!");
/* is it time to do a heart beat ? */
curr_hb->heart_beat_ticks--;
if (ob->prog->heart_beat != 0) {
if (curr_hb->heart_beat_ticks < 1) {
object_t *new_command_giver;
curr_hb->heart_beat_ticks = curr_hb->time_to_heart_beat;
current_heart_beat = ob;
new_command_giver = ob;
#ifndef NO_SHADOWS
while (new_command_giver->shadowing)
new_command_giver = new_command_giver->shadowing;
#endif
#ifndef NO_ADD_ACTION
if (!(new_command_giver->flags & O_ENABLE_COMMANDS))
new_command_giver = 0;
#endif
#ifdef PACKAGE_MUDLIB_STATS
add_heart_beats(&ob->stats, 1);
#endif
set_eval(max_cost);
if (SETJMP(econ.context)) {
restore_context(&econ);
} else {
save_command_giver(new_command_giver);
call_direct(ob, ob->prog->heart_beat - 1,
ORIGIN_DRIVER, 0);
pop_stack(); /* pop the return value */
restore_command_giver();
}
current_object = 0;
}
}
if (++heart_beat_index == num_hb_to_do)
break;
}
pop_context(&econ);
if (heart_beat_index < num_hb_to_do)
perc_hb_probes = 100 * (float) heart_beat_index / num_hb_to_do;
else
perc_hb_probes = 100.0;
heart_beat_index = num_hb_to_do = 0;
}
current_prog = 0;
current_heart_beat = 0;
look_for_objects_to_swap();
#ifdef PACKAGE_MUDLIB_STATS
mudlib_stats_decay();
#endif
} /* call_heart_beat() */
static void call_heart_beat()
{
object_t *ob;
heart_beat_t *curr_hb;
error_context_t econ;
#ifdef WIN32
static long Win32Thread = -1;
#endif
heart_beat_flag = 0;
#ifdef SIGALRM
signal(SIGALRM, sigalrm_handler);
#endif
#ifdef HAS_UALARM
ualarm(HEARTBEAT_INTERVAL, 0);
#else
# ifdef WIN32
if (Win32Thread == -1) Win32Thread = _beginthread(
/* This shouldn't be necessary b/c alarm_loop is already declared as this.
Microsoft lossage? -Beek */
(void (__cdecl *)(void *))
alarm_loop, 256, 0);
# else
alarm(SYSV_HEARTBEAT_INTERVAL); /* defined in config.h */
# endif
#endif
current_interactive = 0;
if ((num_hb_to_do = num_hb_objs)) {
num_hb_calls++;
heart_beat_index = 0;
save_context(&econ);
while (!heart_beat_flag) {
ob = (curr_hb = &heart_beats[heart_beat_index])->ob;
DEBUG_CHECK(!(ob->flags & O_HEART_BEAT),
"Heartbeat not set in object on heartbeat list!");
DEBUG_CHECK(ob->flags & O_SWAPPED,
"Heartbeat in swapped object.\n");
/* is it time to do a heart beat ? */
curr_hb->heart_beat_ticks--;
if (ob->prog->heart_beat != 0) {
if (curr_hb->heart_beat_ticks < 1) {
object_t *new_command_giver;
curr_hb->heart_beat_ticks = curr_hb->time_to_heart_beat;
current_heart_beat = ob;
new_command_giver = ob;
#ifndef NO_SHADOWS
while (new_command_giver->shadowing)
new_command_giver = new_command_giver->shadowing;
#endif
#ifndef NO_ADD_ACTION
if (!(new_command_giver->flags & O_ENABLE_COMMANDS))
new_command_giver = 0;
#endif
#ifdef PACKAGE_MUDLIB_STATS
add_heart_beats(&ob->stats, 1);
#endif
eval_cost = max_cost;
if (SETJMP(econ.context)) {
restore_context(&econ);
} else {
save_command_giver(new_command_giver);
call_direct(ob, ob->prog->heart_beat - 1,
ORIGIN_DRIVER, 0);
pop_stack(); /* pop the return value */
restore_command_giver();
}
current_object = 0;
}
}
if (++heart_beat_index == num_hb_to_do)
break;
}
pop_context(&econ);
if (heart_beat_index < num_hb_to_do)
perc_hb_probes = 100 * (float) heart_beat_index / num_hb_to_do;
else
perc_hb_probes = 100.0;
heart_beat_index = num_hb_to_do = 0;
}
current_prog = 0;
current_heart_beat = 0;
look_for_objects_to_swap();
call_out();
#ifdef PACKAGE_MUDLIB_STATS
mudlib_stats_decay();
#endif
} /* call_heart_beat() */