From f20cebf078418f0f42373e94481592ee15608692 Mon Sep 17 00:00:00 2001 From: Mike Primm Date: Wed, 20 Feb 2013 23:07:53 -0500 Subject: [PATCH] Optimize getTileEntities performance Avoid traversing tile entities for every loaded chunk --- src/main/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; } -- 1.8.1-rc2