From 482a39db6d56fa703991fa3dcba040c614bb2061 Mon Sep 17 00:00:00 2001
From: Enno Rehling <enno.rehling@gmail.com>
Date: Sat, 11 Sep 2010 19:30:00 -0700
Subject: [PATCH] prevent buildings in regions that should not have any (simple
 hack)

---
 res/messages.xml     | 6 +++---
 src/kernel/build.c   | 5 +++++
 src/kernel/terrain.h | 2 +-
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/res/messages.xml b/res/messages.xml
index 533ec1418..443f98785 100644
--- a/res/messages.xml
+++ b/res/messages.xml
@@ -4759,8 +4759,8 @@
       <arg name="region" type="region"/>
       <arg name="command" type="order"/>
     </type>
-    <text locale="de">"$unit($unit) in $region($region): '$order($command)' - So etwas kann man nicht bauen."</text>
-    <text locale="en">"$unit($unit) in $region($region): '$order($command)' - You cannot build such a thing."</text>
+    <text locale="de">"$unit($unit) in $region($region): '$order($command)' - So etwas kann man hier nicht bauen."</text>
+    <text locale="en">"$unit($unit) in $region($region): '$order($command)' - You cannot build this here."</text>
   </message>
   <message name="error220" section="errors">
     <type>
@@ -4769,7 +4769,7 @@
       <arg name="command" type="order"/>
     </type>
     <text locale="de">"$unit($unit) in $region($region): '$order($command)' - Im astralen Nebel konnte niemand entdeckt werden."</text>
-    <text locale="en">"$unit($unit) in $region($region): '$order($command)' - Noone could be seen in th astral fog."</text>
+    <text locale="en">"$unit($unit) in $region($region): '$order($command)' - Noone could be seen in the astral fog."</text>
   </message>
   <message name="gbdream_noteach" section="errors">
     <type>
diff --git a/src/kernel/build.c b/src/kernel/build.c
index 50ab584c4..cd70206ff 100644
--- a/src/kernel/build.c
+++ b/src/kernel/build.c
@@ -873,6 +873,11 @@ build_building(unit * u, const building_type * btype, int want, order * ord)
     cmistake(u, ord, 221, MSG_PRODUCE);
     return;
   }
+  if (r->terrain->max_road<=0) {
+    /* special terrain, cannot build */
+    cmistake(u, ord, 221, MSG_PRODUCE);
+    return;
+  }
   if (btype->flags & BTF_ONEPERTURN) {
     if(b && fval(b, BLD_EXPANDED)) {
       cmistake(u, ord, 318, MSG_PRODUCE);
diff --git a/src/kernel/terrain.h b/src/kernel/terrain.h
index 644a0e329..b8be715f4 100644
--- a/src/kernel/terrain.h
+++ b/src/kernel/terrain.h
@@ -23,7 +23,7 @@ extern "C" {
 #endif
 
 /* diverse Flags */
-/* Strassen können gebaut werden, wenn max_road > 0 */
+/* Strassen und Gebäude können gebaut werden, wenn max_road > 0 */
 #define LAND_REGION      (1<<0)		/* Standard-Land-struct region */
 #define SEA_REGION       (1<<1)		/* hier braucht man ein Boot */
 #define FOREST_REGION    (1<<2)		/* Elfen- und Kampfvorteil durch Bäume */