From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: 2No2Name <2No2Name@web.de>
Date: Tue, 21 Dec 2021 09:43:24 -0500
Subject: [PATCH] lithium: store gamerules in fastutil hashmap

Original code by CaffeineMC, licensed under GNU Lesser General Public License v3.0
You can find the original code on https://github.com/CaffeineMC/lithium-fabric (Yarn mappings)

diff --git a/src/main/java/net/minecraft/world/level/GameRules.java b/src/main/java/net/minecraft/world/level/GameRules.java
index 17e869074b8cf29a8c3280499a27e95179896750..97a5aec7da267b8b9f6d191c871316ccb89c448c 100644
--- a/src/main/java/net/minecraft/world/level/GameRules.java
+++ b/src/main/java/net/minecraft/world/level/GameRules.java
@@ -27,6 +27,7 @@ import net.minecraft.network.protocol.game.ClientboundGameEventPacket;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.level.ServerPlayer;
 import org.slf4j.Logger;
+import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap; // JettPack
 
 public class GameRules {
 
@@ -111,14 +112,16 @@ public class GameRules {
 
     public GameRules() {
         // Pufferfish start - use this to ensure gameruleArray is initialized
-        this((Map) GameRules.GAME_RULE_TYPES.entrySet().stream().collect(ImmutableMap.toImmutableMap(Entry::getKey, (entry) -> {
+        // JettPack start - lithium: store gamerules in fastutil hashmap
+        this(new Object2ObjectOpenHashMap<>((Map) GameRules.GAME_RULE_TYPES.entrySet().stream().collect(ImmutableMap.toImmutableMap(Entry::getKey, (entry) -> {
             return ((GameRules.Type) entry.getValue()).createRule();
-        })));
+        }))));
+        // JettPack end
         // Pufferfish end
     }
 
     private GameRules(Map<GameRules.Key<?>, GameRules.Value<?>> rules) {
-        this.rules = rules;
+        this.rules = new Object2ObjectOpenHashMap<>(rules); // JettPack - lithium: store gamerules in fastutil hashmap
 
         // Pufferfish start
         int arraySize = rules.keySet().stream().mapToInt(key -> key.gameRuleIndex).max().orElse(-1) + 1;