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fix #H7667 - maybe_reset_pick(), other bad context

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When deciding whether to discard interrupted lock/unlock context while
changing levels, maybe_reset_pick() checks whether xlock.box is being
carried.  But it was doing so after the old level had been saved and
memory for non-carried container there had been freed.

That led to a couple of other issues.  context.travelcc was using -1
for 'no cached value', but the fields of travelcc have type 'xchar' and
shouldn't be given negative values.  0 should be fine for 'no cache'.

Failed partial restore which occurred after old game's context had been
loaded would begin a new game with old game's stale context.  Restoring
goes out of its way to avoid that for 'flags' but didn't for 'context'.
This commit is contained in:
PatR
2018-12-04 17:10:15 -08:00
parent f6b7ce02d8
commit 36c2aec2ff
7 changed files with 39 additions and 41 deletions
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4
src/cmd.c
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@@ -1,4 +1,4 @@
/* NetHack 3.6 cmd.c $NHDT-Date: 1543797825 2018/12/03 00:43:45 $ $NHDT-Branch: NetHack-3.6.2-beta01 $:$NHDT-Revision: 1.312 $ */
/* NetHack 3.6 cmd.c $NHDT-Date: 1543972186 2018/12/05 01:09:46 $ $NHDT-Branch: NetHack-3.6.2-beta01 $:$NHDT-Revision: 1.313 $ */
/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/*-Copyright (c) Robert Patrick Rankin, 2013. */
/* NetHack may be freely redistributed. See license for details. */
@@ -5694,7 +5694,7 @@ dotravel(VOID_ARGS)
cmd[1] = 0;
cc.x = iflags.travelcc.x;
cc.y = iflags.travelcc.y;
if (cc.x == -1 && cc.y == -1) {
if (cc.x == 0 && cc.y == 0) {
/* No cached destination, start attempt from current position */
cc.x = u.ux;
cc.y = u.uy;