From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Paul <paul@technove.co>
Date: Tue, 29 Jun 2021 02:24:23 -0500
Subject: [PATCH] Pufferfish Skip cloning loot parameters


diff --git a/src/main/java/net/minecraft/world/level/storage/loot/LootParams.java b/src/main/java/net/minecraft/world/level/storage/loot/LootParams.java
index 37a0002bbe6539648db5219bb373e0404ae48dc0..ca0571d232e102c4b177a1ea44b96f5f0f440211 100644
--- a/src/main/java/net/minecraft/world/level/storage/loot/LootParams.java
+++ b/src/main/java/net/minecraft/world/level/storage/loot/LootParams.java
@@ -21,8 +21,10 @@ public class LootParams {
 
     public LootParams(ServerLevel world, Map<LootContextParam<?>, Object> parameters, Map<ResourceLocation, LootParams.DynamicDrop> dynamicDrops, float luck) {
         this.level = world;
-        this.params = parameters;
-        this.dynamicDrops = dynamicDrops;
+        // Pufferfish start - use unmodifiable maps instead of immutable ones to skip the copy
+        this.params = java.util.Collections.unmodifiableMap(parameters);
+        this.dynamicDrops = java.util.Collections.unmodifiableMap(dynamicDrops);
+        // Pufferfish end
         this.luck = luck;
     }