From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Andrew Steinborn <git@steinborn.me>
Date: Sun, 8 Aug 2021 00:52:54 -0400
Subject: [PATCH] Optimize entity tracker passenger checks


diff --git a/src/main/java/net/minecraft/server/level/ServerEntity.java b/src/main/java/net/minecraft/server/level/ServerEntity.java
index 50f1e690d499940ce6c2174dbc609af21fd7b0cb..15968ea0b86a35fec8c0301bbdccc4ecd491197b 100644
--- a/src/main/java/net/minecraft/server/level/ServerEntity.java
+++ b/src/main/java/net/minecraft/server/level/ServerEntity.java
@@ -75,7 +75,7 @@ public class ServerEntity {
     private Vec3 lastSentMovement;
     private int tickCount;
     private int teleportDelay;
-    private List<Entity> lastPassengers = Collections.emptyList();
+    private List<Entity> lastPassengers = com.google.common.collect.ImmutableList.of(); // Paper - optimize passenger checks
     private boolean wasRiding;
     private boolean wasOnGround;
     @Nullable