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Optimize getTileEntities

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Avoid traversing tile entities for every loaded chunk

By: Mike Primm <mike@primmhome.com>
This commit is contained in:
Spigot 2013-02-21 00:40:28 -06:00
parent 56f1d1c01d
commit c3fc9635b8
1 changed files with 47 additions and 0 deletions
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CraftBukkit-Patches/0029-Optimize-getTileEntities-performance.patch Normal file
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@ -0,0 +1,47 @@
From 57cb706d68fe541313ce19b05256d6530fe2c0ec Mon Sep 17 00:00:00 2001
From: Mike Primm <mike@primmhome.com>
Date: Wed, 20 Feb 2013 23:07:53 -0500
Subject: [PATCH] Optimize getTileEntities performance
Avoid traversing tile entities for every loaded chunk
---
.../java/net/minecraft/server/WorldServer.java | 21 +++++++++++---------
1 file changed, 12 insertions(+), 9 deletions(-)
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index 6cb3e24..8f0050a 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -616,17 +616,20 @@ public class WorldServer extends World implements org.bukkit.BlockChangeDelegate
public List getTileEntities(int i, int j, int k, int l, int i1, int j1) {
ArrayList arraylist = new ArrayList();
- // CraftBukkit start - use iterator
- Iterator iterator = this.tileEntityList.iterator();
-
- while (iterator.hasNext()) {
- TileEntity tileentity = (TileEntity) iterator.next();
- // CraftBukkit end
-
- if (tileentity.x >= i && tileentity.y >= j && tileentity.z >= k && tileentity.x < l && tileentity.y < i1 && tileentity.z < j1) {
- arraylist.add(tileentity);
+ // Spigot start - check in chunks: usually just from one
+ for (int cx = (i >> 4); cx <= ((l - 1) >> 4); cx++) {
+ for (int cz = (k >> 4); cz <= ((j1 - 1) >> 4); cz++) {
+ Chunk c = getChunkAt(cx, cz);
+ if (c == null) continue;
+ for (Object te : c.tileEntities.values()) {
+ TileEntity tileentity = (TileEntity) te;
+ if ((tileentity.x >= i) && (tileentity.y >= j) && (tileentity.z >= k) && (tileentity.x < l) && (tileentity.y < i1) && (tileentity.z < j1)) {
+ arraylist.add(tileentity);
+ }
+ }
}
}
+ // Spigot end
return arraylist;
}
--
1.7.10.1