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fix github issue #354 - stealarm() impossible

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A thieving monster could be killed while the hero was busy taking
off armor which needs multiple turns (normally a suit) and if that
happened on the same turn as the take-off finished, the warning
"stealarm(): dead monster stealing" was issued.  Cited case was
having the thief be killed by a stinking cloud but it could happen
if the death was caused by a pet or by some other monster trying
to attack the hero.  If the thief died sooner, the situation was
silently ignored.  So this could have been fixed by just getting
rid of the impossible() feedback.

'stealmid' and 'stealoid' should have been static in steal.c rather
than global and as such should have been moved into 'struct g'.
This moves them there and then takes advantage of having access to
'stealmid' outside of steal.c.  That's just a minor optimization
since m_detach() could call new thiefdead() unconditionally and the
latter could check whether the dead monster matches 'stealmid'.

Fixes #354
This commit is contained in:
PatR
2020-06-01 06:17:07 -07:00
parent ac364b3e20
commit 503df6823d
7 changed files with 80 additions and 47 deletions
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4
src/mon.c
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@@ -1,4 +1,4 @@
/* NetHack 3.6 mon.c $NHDT-Date: 1586091449 2020/04/05 12:57:29 $ $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.333 $ */
/* NetHack 3.6 mon.c $NHDT-Date: 1591017419 2020/06/01 13:16:59 $ $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.337 $ */
/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/*-Copyright (c) Derek S. Ray, 2015. */
/* NetHack may be freely redistributed. See license for details. */
@@ -1977,6 +1977,8 @@ struct permonst *mptr; /* reflects mtmp->data _prior_ to mtmp's death */
/* to prevent an infinite relobj-flooreffects-hmon-killed loop */
mtmp->mtrapped = 0;
mtmp->mhp = 0; /* simplify some tests: force mhp to 0 */
if (mtmp->m_id == g.stealmid)
thiefdead();
relobj(mtmp, 0, FALSE);
if (onmap || mtmp == g.level.monsters[0][0]) {
if (mtmp->wormno)