From cb84d6b9941f40562773950aafdb9dc8682b8537 Mon Sep 17 00:00:00 2001
From: feildmaster <admin@feildmaster.com>
Date: Sat, 25 Aug 2012 08:46:59 -0500
Subject: [PATCH] Fix empty chunks not sending biome properly and causing
 client side issues. Fixes BUKKIT-2396

---
 .../net/minecraft/server/Packet51MapChunk.java | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/src/main/java/net/minecraft/server/Packet51MapChunk.java b/src/main/java/net/minecraft/server/Packet51MapChunk.java
index 80b13e9b8b..0533048e09 100644
--- a/src/main/java/net/minecraft/server/Packet51MapChunk.java
+++ b/src/main/java/net/minecraft/server/Packet51MapChunk.java
@@ -176,6 +176,16 @@ public class Packet51MapChunk extends Packet {
             }
         }
 
+        // CraftBukkit start - Hackiest hack to have ever hacked.
+        // First of all, check to see if we flagged it to send, and all data is "0"
+        // This means that it's an "EmptyChunk," HOWEVER... It's not a physical EmptyChunk on the server, there is simply no data present
+        if (flag && i == 0xffff && j == 0 && chunkmap.b == 0 && chunkmap.c == 0) {
+            chunkmap.b = 1;
+            j = 10240;
+            java.util.Arrays.fill(abyte, 0, j, (byte) 0);
+        }
+        // CraftBukkit end
+
         if (flag) {
             byte[] abyte2 = chunk.m();
 
@@ -183,14 +193,6 @@ public class Packet51MapChunk extends Packet {
             j += abyte2.length;
         }
 
-        // CraftBukkit start - Hackiest hack to have ever hacked.
-        // First of all, check to see if we flagged it to send, and all data is "0"
-        // This means that it's an "EmptyChunk," HOWEVER... It's not a physical EmptyChunk on the server, there is simply no data present
-        if (flag && i == 0xffff && k == 0 && chunkmap.b == 0 && chunkmap.c == 0) {
-            chunkmap.b = 1;
-        }
-        // CraftBukkit end
-
         chunkmap.a = new byte[j];
         System.arraycopy(abyte, 0, chunkmap.a, 0, j);
         return chunkmap;