From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: tr7zw <tr7zw@live.de>
Date: Fri, 17 Jul 2020 01:10:17 +0200
Subject: [PATCH] Optimize TileEntity loading


diff --git a/src/main/java/me/jellysquid/mods/lithium/common/util/collections/HashedList.java b/src/main/java/me/jellysquid/mods/lithium/common/util/collections/HashedList.java
index a2e3e96e1e96c152de820283c1f8cb6248321f54..1725fc72846949fa08009ca5bec6214828bbbf3c 100644
--- a/src/main/java/me/jellysquid/mods/lithium/common/util/collections/HashedList.java
+++ b/src/main/java/me/jellysquid/mods/lithium/common/util/collections/HashedList.java
@@ -1,11 +1,10 @@
 package me.jellysquid.mods.lithium.common.util.collections;
 
-import it.unimi.dsi.fastutil.objects.ObjectArraySet;
-
 import java.util.*;
 
 /**
  * Wraps a {@link List} with a hash table which provides O(1) lookups for {@link Collection#contains(Object)}.
+ * Uses a hashset so some issues can happen if the same entry get's added multiple times! (Doesn't matter for this usecase)
  * 
  * @see https://github.com/jellysquid3/lithium-fabric/blob/1.16.x/fabric/src/main/java/me/jellysquid/mods/lithium/common/util/collections/HashedList.java
  */
@@ -163,6 +162,6 @@ public class HashedList<T> implements List<T> {
     }
 
     public static <T> HashedList<T> wrapper(List<T> list) {
-        return new HashedList<>(list, new ObjectArraySet<>(list));
+        return new HashedList<>(list, new HashSet<>(list));
     }
 }
\ No newline at end of file
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 4a956f36812f36ea9898cb9e0c231ddb5eaa12cd..98196c11e6b22b14c0c23ae877559f06a5795a0f 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -2,6 +2,8 @@ package net.minecraft.server;
 
 import co.aikar.timings.Timing;
 import co.aikar.timings.Timings;
+import me.jellysquid.mods.lithium.common.util.collections.HashedList;
+
 import com.destroystokyo.paper.antixray.ChunkPacketBlockController; // Paper - Anti-Xray
 import com.destroystokyo.paper.antixray.ChunkPacketBlockControllerAntiXray; // Paper - Anti-Xray
 import com.destroystokyo.paper.event.server.ServerExceptionEvent;
@@ -10,6 +12,7 @@ import com.google.common.base.MoreObjects;
 import com.google.common.collect.Lists;
 import com.mojang.serialization.Codec;
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Iterator;
 import java.util.List;
@@ -42,8 +45,8 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
     public static final ResourceKey<World> THE_END = ResourceKey.a(IRegistry.ae, new MinecraftKey("the_end"));
     private static final EnumDirection[] a = EnumDirection.values();
     //public final List<TileEntity> tileEntityList = Lists.newArrayList(); // Paper - remove unused list
-    public final List<TileEntity> tileEntityListTick = Lists.newArrayList();
-    protected final List<TileEntity> tileEntityListPending = Lists.newArrayList();
+    public final List<TileEntity> tileEntityListTick = HashedList.wrapper(Lists.newArrayList()); // YAPFA
+    protected final List<TileEntity> tileEntityListPending = HashedList.wrapper(Lists.newArrayList()); // YAPFA
     protected final java.util.Set<TileEntity> tileEntityListUnload = com.google.common.collect.Sets.newHashSet();
     public final Thread serverThread;
     private final boolean debugWorld;