Paper/CraftBukkit-Patches/0019-Faster-UUID-for-entities.patch
Zach Brown 7b0c576798 Restructure PaperSpigot as a new set of modules
Allows us much greater control over the Spigot portion of the code
and makes us more "proper"
Credit to @Dmck2b for originally passing the idea along a while back
2014-07-21 15:46:54 -05:00

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From a1b856ba2aa12d0bd6d192b5ee6a6c168d7e390e Mon Sep 17 00:00:00 2001
From: md_5 <md_5@live.com.au>
Date: Sun, 17 Mar 2013 19:02:50 +1100
Subject: [PATCH] Faster UUID for entities
It is overkill to create a new SecureRandom on each entity create and then use it to make a new Entity ID for every entity instance created. Instead we will just use a pseudo random UUID based off the random instance we already have.
diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index 33798d8..18e4d8d 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -141,7 +141,7 @@ public abstract class Entity {
this.random = new Random();
this.maxFireTicks = 1;
this.justCreated = true;
- this.uniqueID = UUID.randomUUID();
+ this.uniqueID = new UUID(random.nextLong(), random.nextLong()); // Spigot
this.as = EnumEntitySize.SIZE_2;
this.world = world;
this.setPosition(0.0D, 0.0D, 0.0D);
--
1.9.1