From c6d488fb8d0f95bdefcf27f63e7f58fb14f2ecce Mon Sep 17 00:00:00 2001
From: cohrs <cohrs>
Date: Fri, 21 May 2004 21:33:19 +0000
Subject: [PATCH] U1041 - monster hidden under a corpse not displayed
 immediately when it rots There was already code to ensure that if a hidden
 monster moved, it would no longer be hidden.  However, if the monster is
 asleep or whatever under a rotting corpse, when the corpse rotted away, the
 monster would not immediately become detected.  Add a check to the rot code
 before the newsym.

---
 doc/fixes35.0 |  2 ++
 src/dig.c     | 12 ++++++++++--
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/doc/fixes35.0 b/doc/fixes35.0
index 106aeae16..924437930 100644
--- a/doc/fixes35.0
+++ b/doc/fixes35.0
@@ -65,6 +65,8 @@ kicked objects do not slide when on the air or water levels
 when a giant carrying a boulder dies in a pit, ensure that the corpse is
 	buried under the filled pit
 when blind and levitating > shouldn't say "stairs" if player has not seen them
+a slow-moving monster hidden under a rotting corpse was not immediately
+	displayed when the corpse rotted away
 
 
 Platform- and/or Interface-Specific Fixes
diff --git a/src/dig.c b/src/dig.c
index 56c36dfc5..3931ba02f 100644
--- a/src/dig.c
+++ b/src/dig.c
@@ -1556,8 +1556,16 @@ long timeout;	/* unused */
 	    }
 	}
 	rot_organic(arg, timeout);
-	if (on_floor) newsym(x, y);
-	else if (in_invent) update_inventory();
+	if (on_floor) {
+	    struct monst *mtmp = m_at(x, y);
+
+	    /* a hiding monster may be exposed */
+	    if (mtmp && !OBJ_AT(x, y) &&
+		mtmp->mundetected && hides_under(mtmp->data)) {
+		mtmp->mundetected = 0;
+	    }
+	    newsym(x, y);
+	} else if (in_invent) update_inventory();
 }
 
 #if 0
-- 
2.50.1