From 098398ebcb2c5c41089ca9bf130e77d9eba9dc4d Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 29 Jul 2018 22:58:47 -0400
Subject: [PATCH] MC-111480: Start Entity ID's at 1

DataWatchers that store Entity ID's treat 0 as special,
and can break things such as Elytra Fireworks.

diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index 50b6765a55..8a95e0f117 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -92,7 +92,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
     // CraftBukkit end
 
     protected static final Logger LOGGER = LogManager.getLogger();
-    private static final AtomicInteger entityCount = new AtomicInteger();
+    private static final AtomicInteger entityCount = new AtomicInteger(1); // paper - start entity count from 1
     private static final List<ItemStack> c = Collections.emptyList();
     private static final AxisAlignedBB d = new AxisAlignedBB(0.0D, 0.0D, 0.0D, 0.0D, 0.0D, 0.0D);
     private static double e = 1.0D;
-- 
2.21.0