nethack-gwaa-kiwi/nethack
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wizard mode memory leak in endgame

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Leaving the Plane of Water to return to a previously visited endgame
level didn't free the air bubbles unless/until you visit a new level.
Returning to that level creates a new set of air bubbles, losing track
of the previous set.  Likewise with Plane of Air and its clouds.  (Not
an issue with actual save and restore when on those levels, or when
just moving forward to not-yet-visited levels.)

Not applicable to normal play where it isn't possible to return to a
previously visited endgame level.

For 3.7, bubble save/restore ought to become part of savlev() instead
of being handled by savegamestate().
This commit is contained in:
PatR
2019-05-28 17:08:48 -07:00
parent f478b4ec95
commit f476638ee0
3 changed files with 32 additions and 27 deletions
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13
src/do.c
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@@ -1,4 +1,4 @@
/* NetHack 3.6 do.c $NHDT-Date: 1548978604 2019/01/31 23:50:04 $ $NHDT-Branch: NetHack-3.6.2-beta01 $:$NHDT-Revision: 1.189 $ */
/* NetHack 3.6 do.c $NHDT-Date: 1559088523 2019/05/29 00:08:43 $ $NHDT-Branch: NetHack-3.6 $:$NHDT-Revision: 1.190 $ */
/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/*-Copyright (c) Derek S. Ray, 2015. */
/* NetHack may be freely redistributed. See license for details. */
@@ -1365,6 +1365,16 @@ boolean at_stairs, falling, portal;
}
savelev(fd, ledger_no(&u.uz),
cant_go_back ? FREE_SAVE : (WRITE_SAVE | FREE_SAVE));
/* air bubbles and clouds are saved in game-state rather than with the
level they're used on; in normal play, you can't leave and return
to any endgame level--bubbles aren't needed once you move to the
next level so used to be discarded when the next special level was
loaded; but in wizard mode you can leave and return, and since they
aren't saved with the level and restored upon return (new ones are
created instead), we need to discard them to avoid a memory leak;
so bubbles are now discarded as we leave the level they're used on */
if (Is_waterlevel(&u.uz) || Is_airlevel(&u.uz))
save_waterlevel(fd, FREE_SAVE); /* note: doesn't use 'fd' */
bclose(fd);
if (cant_go_back) {
/* discard unreachable levels; keep #0 */
@@ -1428,6 +1438,7 @@ boolean at_stairs, falling, portal;
oinit(); /* reassign level dependent obj probabilities */
}
reglyph_darkroom();
u.uinwater = 0;
/* do this prior to level-change pline messages */
vision_reset(); /* clear old level's line-of-sight */
vision_full_recalc = 0; /* don't let that reenable vision yet */