papermc/CraftBukkit-Patches/0027-Improved-tile-entity-lookup-for-chunk-sending.patch

From 7b59da20b8a8fd9a537e2fd5a72a863ab21cff3b Mon Sep 17 00:00:00 2001
From: shakytom <tom.roberts00@gmail.com>
Date: Wed, 20 Feb 2013 22:34:38 -0500
Subject: [PATCH] Improved tile entity lookup for chunk sending

Instead of scanning the entire worlds tile entities to find out what tile entities are in the chunk... just use the arraylist of tile entities we already have.
This results in a good reduction of time spent in player ticking.
---
 src/main/java/net/minecraft/server/EntityPlayer.java | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/main/java/net/minecraft/server/EntityPlayer.java b/src/main/java/net/minecraft/server/EntityPlayer.java
index 8d61ca6..28f462b 100644
--- a/src/main/java/net/minecraft/server/EntityPlayer.java
+++ b/src/main/java/net/minecraft/server/EntityPlayer.java
@@ -163,8 +163,9 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
 
                 iterator1.remove();
                 if (chunkcoordintpair != null && this.world.isLoaded(chunkcoordintpair.x << 4, 0, chunkcoordintpair.z << 4)) {
-                    arraylist.add(this.world.getChunkAt(chunkcoordintpair.x, chunkcoordintpair.z));
-                    arraylist1.addAll(((WorldServer) this.world).getTileEntities(chunkcoordintpair.x * 16, 0, chunkcoordintpair.z * 16, chunkcoordintpair.x * 16 + 16, 256, chunkcoordintpair.z * 16 + 16));
+                    Chunk chunk = this.world.getChunkAt(chunkcoordintpair.x, chunkcoordintpair.z); // Spigot
+                    arraylist.add(chunk); // Spigot
+                    arraylist1.addAll(chunk.tileEntities.values()); // Spigot
                 }
             }
 
-- 
1.8.1-rc2