From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Martijn Muijsers <martijnmuijsers@live.nl>
Date: Wed, 23 Nov 2022 23:10:56 +0100
Subject: [PATCH] Reduce entity allocations

License: GPL-3.0 (https://www.gnu.org/licenses/gpl-3.0.html)
Gale - https://galemc.org

This patch is based on the following patch:
"Reduce entity allocations"
By: Paul Sauve <paul@technove.co>
As part of: Airplane (https://github.com/TECHNOVE/Airplane)
Licensed under: GPL-3.0 (https://www.gnu.org/licenses/gpl-3.0.html)

* Airplane copyright *

Airplane
Copyright (C) 2020 Technove LLC

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

diff --git a/net/minecraft/world/entity/ai/attributes/AttributeMap.java b/net/minecraft/world/entity/ai/attributes/AttributeMap.java
index bed9b564c493cd84bf53fc49368fda736f3fbc2b..5b22ad7d56754f82ce8448382ab6bafc2055f413 100644
--- a/net/minecraft/world/entity/ai/attributes/AttributeMap.java
+++ b/net/minecraft/world/entity/ai/attributes/AttributeMap.java
@@ -18,9 +18,11 @@ public class AttributeMap {
     private final Set<AttributeInstance> attributesToSync = new ObjectOpenHashSet<>();
     private final Set<AttributeInstance> attributesToUpdate = new ObjectOpenHashSet<>();
     private final AttributeSupplier supplier;
+    private final java.util.function.Function<Holder<Attribute>, AttributeInstance> createInstance; // Gale - Airplane - reduce entity allocations
 
     public AttributeMap(AttributeSupplier supplier) {
         this.supplier = supplier;
+        this.createInstance = holder -> this.supplier.createInstance(this::onAttributeModified, holder); // Gale - Airplane - reduce entity allocations
     }
 
     private void onAttributeModified(AttributeInstance instance) {
@@ -44,7 +46,7 @@ public class AttributeMap {
 
     @Nullable
     public AttributeInstance getInstance(Holder<Attribute> attribute) {
-        return this.attributes.computeIfAbsent(attribute, holder -> this.supplier.createInstance(this::onAttributeModified, (Holder<Attribute>)holder));
+        return this.attributes.computeIfAbsent(attribute, this.createInstance); // Gale - Airplane - reduce entity allocations - cache lambda, as for some reason java allocates it anyways
     }
 
     public boolean hasAttribute(Holder<Attribute> attribute) {