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dg_handler.c
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dg_handler.c
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/**************************************************************************
* File: dg_handler.c Part of LuminariMUD *
* Usage: Contains functions to handle memory for scripts. *
* *
* All rights reserved. See license for complete information. *
* *
* Death's Gate MUD is based on CircleMUD, Copyright (C) 1993, 94. *
* CircleMUD is based on DikuMUD, Copyright (C) 1990, 1991. *
* *
* $Author: Mark A. Heilpern/egreen/Welcor $ *
* $Date: 2004/10/11 12:07:00$ *
* $Revision: 1.0.14 $ *
***************************************************************************/
#include "conf.h"
#include "sysdep.h"
#include "structs.h"
#include "utils.h"
#include "dg_scripts.h"
#include "comm.h"
#include "db.h"
#include "handler.h"
#include "spells.h"
#include "dg_event.h"
#include "constants.h"
/* frees memory associated with var */
void free_var_el(struct trig_var_data *var)
{
if (var->name)
free(var->name);
if (var->value)
free(var->value);
free(var);
}
/* release memory allocated for a variable list */
void free_varlist(struct trig_var_data *vd)
{
struct trig_var_data *i, *j;
for (i = vd; i;) {
j = i;
i = i->next;
free_var_el(j);
}
}
/* Remove var name from var_list. Returns 1 if found, else 0. */
int remove_var(struct trig_var_data **var_list, char *name)
{
struct trig_var_data *i, *j;
for (j = NULL, i = *var_list; i && str_cmp(name, i->name);
j = i, i = i->next);
if (i) {
if (j) {
j->next = i->next;
free_var_el(i);
} else {
*var_list = i->next;
free_var_el(i);
}
return 1;
}
return 0;
}
/* Return memory used by a trigger. The command list is free'd when changed and
* when shutting down. */
void free_trigger(struct trig_data *trig)
{
free(trig->name);
trig->name = NULL;
if (trig->arglist) {
free(trig->arglist);
trig->arglist = NULL;
}
if (trig->var_list) {
free_varlist(trig->var_list);
trig->var_list = NULL;
}
if (GET_TRIG_WAIT(trig))
event_cancel(GET_TRIG_WAIT(trig));
free(trig);
}
/* remove a single trigger from a mob/obj/room */
void extract_trigger(struct trig_data *trig)
{
struct trig_data *temp;
if (GET_TRIG_WAIT(trig)) {
event_cancel(GET_TRIG_WAIT(trig));
GET_TRIG_WAIT(trig) = NULL;
}
trig_index[trig->nr]->number--;
/* walk the trigger list and remove this one */
REMOVE_FROM_LIST(trig, trigger_list, next_in_world);
free_trigger(trig);
}
/* remove all triggers from a mob/obj/room */
void extract_script(void *thing, int type) {
struct script_data *sc = NULL;
struct trig_data *trig = NULL, *next_trig = NULL;
char_data *mob = NULL;
obj_data *obj = NULL;
room_data *room = NULL;
switch (type) {
case MOB_TRIGGER:
mob = (struct char_data *)thing;
sc = SCRIPT(mob);
SCRIPT(mob) = NULL;
break;
case OBJ_TRIGGER:
obj = (struct obj_data *)thing;
sc = SCRIPT(obj);
SCRIPT(obj) = NULL;
break;
case WLD_TRIGGER:
room = (struct room_data *)thing;
sc = SCRIPT(room);
SCRIPT(room) = NULL;
break;
}
/* zusuk disabled this debug 10/15/2017 */
#if 0 /* debugging */
{
struct char_data *i = character_list;
struct obj_data *j = object_list;
room_rnum k = 0;
if (sc) {
for ( ; i ; i = i->next)
assert(sc != SCRIPT(i));
for ( ; j ; j = j->next)
assert(sc != SCRIPT(j));
for (k = 0; k < top_of_world; k++)
assert(sc != SCRIPT(&world[k]));
}
}
#endif
for (trig = TRIGGERS(sc); trig; trig = next_trig) {
next_trig = trig->next;
extract_trigger(trig);
}
TRIGGERS(sc) = NULL;
/* Thanks to James Long for tracking down this memory leak */
free_varlist(sc->global_vars);
free(sc);
}
/* erase the script memory of a mob */
void extract_script_mem(struct script_memory *sc)
{
struct script_memory *next;
while (sc) {
next = sc->next;
if (sc->cmd) free(sc->cmd);
free(sc);
sc = next;
}
}
void free_proto_script(void *thing, int type) {
struct trig_proto_list *proto = NULL, *fproto = NULL;
char_data *mob = NULL;
obj_data *obj = NULL;
room_data *room = NULL;
switch (type) {
case MOB_TRIGGER:
mob = (struct char_data *)thing;
proto = mob->proto_script;
mob->proto_script = NULL;
break;
case OBJ_TRIGGER:
obj = (struct obj_data *)thing;
proto = obj->proto_script;
obj->proto_script = NULL;
break;
case WLD_TRIGGER:
room = (struct room_data *)thing;
proto = room->proto_script;
room->proto_script = NULL;
break;
}
/* zusuk disabled this debug 10/15/2017 */
#if 0 /* debugging */
{
struct char_data *i = character_list;
struct obj_data *j = object_list;
room_rnum k;
if (proto) {
for ( ; i ; i = i->next)
assert(proto != i->proto_script);
for ( ; j ; j = j->next)
assert(proto != j->proto_script);
for (k = 0; k < top_of_world; k++)
assert(proto != world[k].proto_script);
}
}
#endif
while (proto) {
fproto = proto;
proto = proto->next;
free(fproto);
}
}
void copy_proto_script(void *source, void *dest, int type)
{
struct trig_proto_list *tp_src = NULL, *tp_dst = NULL;
switch (type) {
case MOB_TRIGGER:
tp_src = ((char_data *)source)->proto_script;
break;
case OBJ_TRIGGER:
tp_src = ((obj_data *)source)->proto_script;
break;
case WLD_TRIGGER:
tp_src = ((room_data *)source)->proto_script;
break;
}
if (tp_src) {
CREATE(tp_dst, struct trig_proto_list, 1);
switch (type) {
case MOB_TRIGGER:
((char_data *)dest)->proto_script = tp_dst;
break;
case OBJ_TRIGGER:
((obj_data *)dest)->proto_script = tp_dst;
break;
case WLD_TRIGGER:
((room_data *)dest)->proto_script = tp_dst;
break;
}
while (tp_src) {
tp_dst->vnum = tp_src->vnum;
tp_src = tp_src->next;
if (tp_src)
CREATE(tp_dst->next, struct trig_proto_list, 1);
tp_dst = tp_dst->next;
}
}
}
void delete_variables(const char *charname)
{
char filename[PATH_MAX];
if (!get_filename(filename, sizeof(filename), SCRIPT_VARS_FILE, charname))
return;
if (remove(filename) < 0 && errno != ENOENT)
log("SYSERR: deleting variable file %s: %s", filename, strerror(errno));
}
void update_wait_events(struct room_data *to, struct room_data *from)
{
struct trig_data *trig;
if (!SCRIPT(from))
return;
for (trig = TRIGGERS(SCRIPT(from)); trig; trig = trig->next) {
if (!GET_TRIG_WAIT(trig))
continue;
((struct wait_event_data *)GET_TRIG_WAIT(trig)->event_obj)->go = to;
}
}