From 9491916ffaaaa2eeb80507d91298d8e1b58f5c51 Mon Sep 17 00:00:00 2001
From: Byteflux <byte@byteflux.net>
Date: Thu, 16 Jul 2015 14:06:33 -0700
Subject: [PATCH] Unload client chunks + only cache whole chunk maps

---
 Spigot-Server-Patches/ChunkMap-caching.patch | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/Spigot-Server-Patches/ChunkMap-caching.patch b/Spigot-Server-Patches/ChunkMap-caching.patch
index 635faac66..56737cd3e 100644
--- a/Spigot-Server-Patches/ChunkMap-caching.patch
+++ b/Spigot-Server-Patches/ChunkMap-caching.patch
@@ -16,9 +16,15 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +    private PacketPlayOutMapChunk.ChunkMap chunkMap;
 +    private int emptySectionBits;
 +
-+    public PacketPlayOutMapChunk.ChunkMap getChunkMap() {
-+        if (!world.paperSpigotConfig.cacheChunkMaps) {
-+            return PacketPlayOutMapChunk.a(this, true, !world.worldProvider.o(), '\uffff');
++    public PacketPlayOutMapChunk.ChunkMap getChunkMap(boolean groundUpContinuous, int primaryBitMask) {
++        if (!world.paperSpigotConfig.cacheChunkMaps || !groundUpContinuous || (primaryBitMask != 0 && primaryBitMask != '\uffff')) {
++            return PacketPlayOutMapChunk.a(this, groundUpContinuous, !world.worldProvider.o(), primaryBitMask);
++        }
++
++        if (primaryBitMask == 0) {
++            PacketPlayOutMapChunk.ChunkMap chunkMap = new PacketPlayOutMapChunk.ChunkMap();
++            chunkMap.a = new byte[0];
++            return chunkMap;
 +        }
 +
 +        boolean isDirty = false;
@@ -97,7 +103,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
          this.b = chunk.locZ;
          this.d = flag;
 -        this.c = a(chunk, flag, !chunk.getWorld().worldProvider.o(), i);
-+        this.c = chunk.getChunkMap(); // PaperSpigot
++        this.c = chunk.getChunkMap(flag, i); // PaperSpigot
          chunk.world.spigotConfig.antiXrayInstance.obfuscateSync(chunk.locX, chunk.locZ, c.b, c.a, chunk.world);
      }
  
@@ -110,7 +116,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
          for (int j = 0; j < i; ++j) {
              Chunk chunk = (Chunk) list.get(j);
 -            PacketPlayOutMapChunk.ChunkMap packetplayoutmapchunk_chunkmap = PacketPlayOutMapChunk.a(chunk, true, this.d, '\uffff');
-+            PacketPlayOutMapChunk.ChunkMap packetplayoutmapchunk_chunkmap = chunk.getChunkMap(); // PaperSpigot
++            PacketPlayOutMapChunk.ChunkMap packetplayoutmapchunk_chunkmap = chunk.getChunkMap(true, '\uffff'); // PaperSpigot
  
              this.a[j] = chunk.locX;
              this.b[j] = chunk.locZ;