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fix #6598 - monster briefly rendered as hero

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When swapping places with a pet, the hero's coordinates are changed
before some tests which might disallow the swap, and if the pet was
a hidden mimic or was trapped and became untame, the attempt to draw
the revised pet or former pet would actually draw the hero and have
that mistake be visible during the message about not swapping.  That
last bit only occurred when the pet couldn't move diagonally (due to
being a grid bug or to being unable to squeeze through a tight space).
Also, spoteffects for arriving at a new location took place even
though the hero hadn't changed position.
This commit is contained in:
PatR
2017-12-08 14:12:35 -08:00
parent 5e7327cb39
commit 3f9522041c
2 changed files with 21 additions and 2 deletions
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17
src/hack.c
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@@ -1,4 +1,4 @@
/* NetHack 3.6 hack.c $NHDT-Date: 1508549436 2017/10/21 01:30:36 $ $NHDT-Branch: NetHack-3.6.0 $:$NHDT-Revision: 1.180 $ */
/* NetHack 3.6 hack.c $NHDT-Date: 1512771130 2017/12/08 22:12:10 $ $NHDT-Branch: NetHack-3.6.0 $:$NHDT-Revision: 1.181 $ */
/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/* NetHack may be freely redistributed. See license for details. */
@@ -1720,26 +1720,38 @@ domove()
yelp(mtmp);
}
}
/* seemimic/newsym should be done before moving hero, otherwise
the display code will draw the hero here before we possibly
cancel the swap below (we can ignore steed mx,my here) */
u.ux = u.ux0, u.uy = u.uy0;
mtmp->mundetected = 0;
if (mtmp->m_ap_type)
seemimic(mtmp);
else if (!mtmp->mtame)
newsym(mtmp->mx, mtmp->my);
u.ux = mtmp->mx, u.uy = mtmp->my; /* resume swapping positions */
if (mtmp->mtrapped && (trap = t_at(mtmp->mx, mtmp->my)) != 0
&& (trap->ttyp == PIT || trap->ttyp == SPIKED_PIT)
&& sobj_at(BOULDER, trap->tx, trap->ty)) {
/* can't swap places with pet pinned in a pit by a boulder */
u.ux = u.ux0, u.uy = u.uy0; /* didn't move after all */
if (u.usteed)
u.usteed->mx = u.ux, u.usteed->my = u.uy;
} else if (u.ux0 != x && u.uy0 != y && NODIAG(mtmp->data - mons)) {
/* can't swap places when pet can't move to your spot */
u.ux = u.ux0, u.uy = u.uy0;
if (u.usteed)
u.usteed->mx = u.ux, u.usteed->my = u.uy;
You("stop. %s can't move diagonally.", upstart(y_monnam(mtmp)));
} else if (u.ux0 != x && u.uy0 != y && bad_rock(mtmp->data, x, u.uy0)
&& bad_rock(mtmp->data, u.ux0, y)
&& (bigmonst(mtmp->data) || (curr_mon_load(mtmp) > 600))) {
/* can't swap places when pet won't fit thru the opening */
u.ux = u.ux0, u.uy = u.uy0; /* didn't move after all */
if (u.usteed)
u.usteed->mx = u.ux, u.usteed->my = u.uy;
You("stop. %s won't fit through.", upstart(y_monnam(mtmp)));
} else {
char pnambuf[BUFSZ];
@@ -1836,7 +1848,8 @@ domove()
if (Punished) /* put back ball and chain */
move_bc(0, bc_control, ballx, bally, chainx, chainy);
spoteffects(TRUE);
if (u.umoved)
spoteffects(TRUE);
/* delay next move because of ball dragging */
/* must come after we finished picking up, in spoteffects() */