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fix #H9272 - "object lost" panic

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when polymorph causes loss of levitation boots or water walking boots
while over water.  If discarding stuff while trying to crawl out got
rid of the taken-off boots, they wouldn't be in inventory any more
when break_armor() tried to drop them after taking them off.
This commit is contained in:
PatR
2019-10-04 16:12:08 -07:00
parent 8fa38ec8fb
commit f3bc5e5c78
2 changed files with 46 additions and 11 deletions
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52
src/polyself.c
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@@ -1,4 +1,4 @@
/* NetHack 3.6 polyself.c $NHDT-Date: 1559664952 2019/06/04 16:15:52 $ $NHDT-Branch: NetHack-3.6 $:$NHDT-Revision: 1.133 $ */
/* NetHack 3.6 polyself.c $NHDT-Date: 1570230710 2019/10/04 23:11:50 $ $NHDT-Branch: NetHack-3.6 $:$NHDT-Revision: 1.134 $ */
/* Copyright (C) 1987, 1988, 1989 by Ken Arromdee */
/* NetHack may be freely redistributed. See license for details. */
@@ -23,6 +23,7 @@
STATIC_DCL void FDECL(check_strangling, (BOOLEAN_P));
STATIC_DCL void FDECL(polyman, (const char *, const char *));
STATIC_DCL void FDECL(dropp, (struct obj *));
STATIC_DCL void NDECL(break_armor);
STATIC_DCL void FDECL(drop_weapon, (int));
STATIC_DCL int FDECL(armor_to_dragon, (int));
@@ -858,6 +859,33 @@ int mntmp;
return 1;
}
/* dropx() jacket for break_armor() */
STATIC_OVL void
dropp(obj)
struct obj *obj;
{
struct obj *otmp;
/*
* Dropping worn armor while polymorphing might put hero into water
* (loss of levitation boots or water walking boots that the new
* form can't wear), where emergency_disrobe() could remove it from
* inventory. Without this, dropx() could trigger an 'object lost'
* panic. Right now, boots are the only armor which might encounter
* this situation, but handle it for all armor.
*
* Hypothetically, 'obj' could have merged with something (not
* applicable for armor) and no longer be a valid pointer, so scan
* inventory for it instead of trusting obj->where.
*/
for (otmp = invent; otmp; otmp = otmp->nobj) {
if (otmp == obj) {
dropx(obj);
break;
}
}
}
STATIC_OVL void
break_armor()
{
@@ -876,7 +904,7 @@ break_armor()
if (otmp->oartifact) {
Your("%s falls off!", cloak_simple_name(otmp));
(void) Cloak_off();
dropx(otmp);
dropp(otmp);
} else {
Your("%s tears apart!", cloak_simple_name(otmp));
(void) Cloak_off();
@@ -893,7 +921,7 @@ break_armor()
cancel_don();
Your("armor falls around you!");
(void) Armor_gone();
dropx(otmp);
dropp(otmp);
}
if ((otmp = uarmc) != 0) {
if (is_whirly(youmonst.data))
@@ -901,7 +929,7 @@ break_armor()
else
You("shrink out of your %s!", cloak_simple_name(otmp));
(void) Cloak_off();
dropx(otmp);
dropp(otmp);
}
if ((otmp = uarmu) != 0) {
if (is_whirly(youmonst.data))
@@ -909,7 +937,7 @@ break_armor()
else
You("become much too small for your shirt!");
setworn((struct obj *) 0, otmp->owornmask & W_ARMU);
dropx(otmp);
dropp(otmp);
}
}
if (has_horns(youmonst.data)) {
@@ -927,7 +955,7 @@ break_armor()
Your("%s falls to the %s!", helm_simple_name(otmp),
surface(u.ux, u.uy));
(void) Helmet_off();
dropx(otmp);
dropp(otmp);
}
}
}
@@ -939,12 +967,12 @@ break_armor()
You("drop your gloves%s!", uwep ? " and weapon" : "");
drop_weapon(0);
(void) Gloves_off();
dropx(otmp);
dropp(otmp);
}
if ((otmp = uarms) != 0) {
You("can no longer hold your shield!");
(void) Shield_off();
dropx(otmp);
dropp(otmp);
}
if ((otmp = uarmh) != 0) {
if (donning(otmp))
@@ -952,7 +980,7 @@ break_armor()
Your("%s falls to the %s!", helm_simple_name(otmp),
surface(u.ux, u.uy));
(void) Helmet_off();
dropx(otmp);
dropp(otmp);
}
}
if (nohands(youmonst.data) || verysmall(youmonst.data)
@@ -966,7 +994,7 @@ break_armor()
Your("boots %s off your feet!",
verysmall(youmonst.data) ? "slide" : "are pushed");
(void) Boots_off();
dropx(otmp);
dropp(otmp);
}
}
}
@@ -1019,6 +1047,10 @@ int alone;
updateinv = FALSE;
else if (candropwep)
dropx(otmp);
/* [note: dropp vs dropx -- if heart of ahriman is wielded, we
might be losing levitation by dropping it; but that won't
happen until the drop, unlike Boots_off() dumping hero into
water and triggering emergency_disrobe() before dropx()] */
if (updateinv)
update_inventory();