From 0f7728f84decb836bd7d025456315c297fe30435 Mon Sep 17 00:00:00 2001
From: Sergey Gilfanov <inkelyad@gmail.com>
Date: Thu, 26 Jul 2012 22:52:05 +0400
Subject: [PATCH] Smooth transition to the desert biome.

---
 src/mapgen.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/mapgen.cpp b/src/mapgen.cpp
index af53d0091..b37d03501 100644
--- a/src/mapgen.cpp
+++ b/src/mapgen.cpp
@@ -1297,7 +1297,9 @@ BiomeType get_biome(u64 seed, v2s16 p2d)
 	double d = noise2d_perlin(
 			0.6+(float)p2d.X/250, 0.2+(float)p2d.Y/250,
 			seed+9130, 3, 0.50);
-	if(d > 0.35)
+	if(d > 0.45) 
+		return BT_DESERT;
+	if(d > 0.35 && (noise2d( p2d.X, p2d.Y, int(seed) ) + 1.0) > ( 0.45 - d ) * 20.0  ) 
 		return BT_DESERT;
 	return BT_NORMAL;
 };