From 1b19020bf471cd31ad2dd762450e88d90989f62a Mon Sep 17 00:00:00 2001
From: darkrose <lisa@ltmnet.com>
Date: Sat, 21 Jul 2012 03:07:01 +1000
Subject: [PATCH] Remove trenches from map generator (cyisfor) (glitches: read
 below)

This causes glitches in very high cliffs by not making mud "flow" down from
them. Those are quite rare currently because of the lame height differences
generated.
---
 src/mapgen.cpp | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/src/mapgen.cpp b/src/mapgen.cpp
index a487e8f6d..af53d0091 100644
--- a/src/mapgen.cpp
+++ b/src/mapgen.cpp
@@ -2059,13 +2059,14 @@ void make_block(BlockMakeData *data)
 				
 				bool old_is_water = (n->getContent() == c_water_source);
 				// Move mud to new place
-				if(!dropped_to_unknown)
+				if(!dropped_to_unknown) {
 					*n2 = *n;
-				// Set old place to be air (or water)
-				if(old_is_water)
-					*n = MapNode(c_water_source);
-				else
-					*n = MapNode(CONTENT_AIR);
+					// Set old place to be air (or water)
+					if(old_is_water)
+						*n = MapNode(c_water_source);
+					else
+						*n = MapNode(CONTENT_AIR);
+				}
 
 				// Done
 				break;