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maybe fix #K3634 - failed migrating mov arrival

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place_monster() sanity check complained that a long worm was being
put at the same location as another monster.  The long worm wasn't
on the map prior to that place attempt.  This probably fixes it but
I don't a test case so am not sure.
This commit is contained in:
PatR
2022-07-08 11:07:36 -07:00
parent c4bd9db98c
commit c536c6920d
1 changed files with 15 additions and 8 deletions
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src/mon.c
+15 -8
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@@ -3292,16 +3292,23 @@ m_into_limbo(struct monst *mtmp)
} }
static void static void
migrate_mon(struct monst *mtmp, xint16 target_lev, xint16 xyloc) migrate_mon(
struct monst *mtmp,
xint16 target_lev, /* destination level */
xint16 xyloc) /* MIGR_xxx flag for location within destination */
{ {
if (!mtmp->mx) { /*
/* this was a failed arrival attempt from a prior migration; * If mtmp->mx is zero, this was a failed arrival attempt from a
force mtmp to temporarily have a valid location when starting * prior migration and mtmp isn't on the map. In that situation
its new migration */ * it can't be engulfing or holding the hero or held by same and
mtmp->mx = u.ux, mtmp->my = u.uy; * should have dropped any special objects during that earlier
* migration back when it had a valid map location. So only
* perform some actions when mx is non-zero.
*/
if (mtmp->mx) {
unstuck(mtmp);
mdrop_special_objs(mtmp);
} }
unstuck(mtmp);
mdrop_special_objs(mtmp);
migrate_to_level(mtmp, target_lev, xyloc, (coord *) 0); migrate_to_level(mtmp, target_lev, xyloc, (coord *) 0);
} }