From d9368a3c09ef8d47719726bae73646a2feccaa9b Mon Sep 17 00:00:00 2001
From: cohrs <cohrs>
Date: Sat, 23 Sep 2006 06:32:01 +0000
Subject: [PATCH] constrain monster migration in wizard tower <Someone> noticed
 that when a monster escaped upladder in the wizard tower, it ended up outside
 the tower.  This is due to the "wander" code in monster migration.  Rather
 than add code to try to keep the monster from crossing the undiggable wall,
 just add REGIONs on the tower levels within the area, which then utilizes the
 existing in-a-room constraint behavior of monster migration. Of course, one
 can still fill a tower level with fodder, and then when another monster
 climbs the ladder, it will still end up outside the tower.

---
 dat/yendor.des | 4 ++++
 doc/fixes34.4  | 1 +
 2 files changed, 5 insertions(+)

diff --git a/dat/yendor.des b/dat/yendor.des
index ea27c871b..df937fa1a 100644
--- a/dat/yendor.des
+++ b/dat/yendor.des
@@ -30,6 +30,8 @@ TELEPORT_REGION:levregion(01,00,79,20),(0,0,27,12)
 # Make it a morgue for rm id in mkmaze.c
 # for the purpose of random sdoor placement
 REGION:(12,01,20,09),unlit,"morgue",unfilled
+# another region to constrain monster arrival
+REGION:(01,01,10,11),unlit,"ordinary",unfilled
 MAZEWALK:(28,05),east
 LADDER:(06,05),down
 # Non diggable walls
@@ -111,6 +113,8 @@ STAIR:levregion(01,00,79,20),(0,0,28,12),up
 STAIR:levregion(01,00,79,20),(0,0,28,12),down
 BRANCH:levregion(01,00,79,20),(0,0,28,12)
 TELEPORT_REGION:levregion(01,00,79,20),(0,0,27,12)
+# entire tower in a region, constrains monster migration
+REGION:(01,01,26,11),unlit,"ordinary",unfilled
 REGION:(09,03,17,09),unlit,"zoo"
 DOOR:closed,(15,02)
 DOOR:closed,(11,10)
diff --git a/doc/fixes34.4 b/doc/fixes34.4
index 796ad2a9f..a1e9563e9 100644
--- a/doc/fixes34.4
+++ b/doc/fixes34.4
@@ -257,6 +257,7 @@ prevent obj_is_local panic during bones creation when splatter_burning_oil()
 	from a thrown potion of oil kills the hero
 fix region timeout detection, caused strange display of stinking cloud
 	while wearing the Eyes of the Overworld
+try to keep migrating monsters from escaping the wizard tower
 
 
 Platform- and/or Interface-Specific Fixes