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improve full level handling in the endgame

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Even though a goodpos failure in mnearto() would return 0 to
the caller and trigger proper overcrowding handling for mtmp,
the 'othermon' would be left with its mx,my set to 0,0 under
that circumstance and then trigger a mon_sanity_check()
failure and accompanying impossible() message a short while
afterwards.

This also includes the addition of some flags that proved useful
for troubleshooting the mystery sanity_check failure and helping
to understand some of the code paths the struct monst data had
been through. They are only used for inspection when issues are
reported or when debugging, they don't presently control the
code flow.  Their setting and use is done in an overloaded way
that should not intrude on the existing use of mspare1 for
MIGR_LEFTOVERS. mon->mstate is just a pseudonym for mon->mspare1
and does not alter save file content.
This commit is contained in:
nhmall
2019-06-01 16:51:10 -04:00
parent 6f7089de10
commit 5ee78c5204
6 changed files with 210 additions and 34 deletions
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3
include/extern.h
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@@ -1,4 +1,4 @@
/* NetHack 3.6 extern.h $NHDT-Date: 1558485640 2019/05/22 00:40:40 $ $NHDT-Branch: NetHack-3.6 $:$NHDT-Revision: 1.706 $ */
/* NetHack 3.6 extern.h $NHDT-Date: 1559422206 2019/06/01 20:50:06 $ $NHDT-Branch: NetHack-3.6 $:$NHDT-Revision: 1.707 $ */
/* Copyright (c) Steve Creps, 1988. */
/* NetHack may be freely redistributed. See license for details. */
@@ -1394,6 +1394,7 @@ E int FDECL(can_carry, (struct monst *, struct obj *));
E int FDECL(mfndpos, (struct monst *, coord *, long *, long));
E boolean FDECL(monnear, (struct monst *, int, int));
E void NDECL(dmonsfree);
E void FDECL(elemental_clog, (struct monst *));
E int FDECL(mcalcmove, (struct monst *));
E void NDECL(mcalcdistress);
E void FDECL(replmon, (struct monst *, struct monst *));