From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: jellysquid3 <jellysquid3@users.noreply.github.com>
Date: Wed, 15 Dec 2021 11:30:23 -0500
Subject: [PATCH] lithium: cached hashcode

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/block/Block.java b/src/main/java/net/minecraft/world/level/block/Block.java
index 2e65b44f10aeb44fd524a58e7eb815a566c1ad61..dfe1e522a747b894d43124b97eaceb0ab196ac44 100644
--- a/src/main/java/net/minecraft/world/level/block/Block.java
+++ b/src/main/java/net/minecraft/world/level/block/Block.java
@@ -612,11 +612,18 @@ public class Block extends BlockBehaviour implements ItemLike {
         private final BlockState first;
         private final BlockState second;
         private final Direction direction;
+        private int hash; // JettPack
 
         public BlockStatePairKey(BlockState self, BlockState other, Direction facing) {
             this.first = self;
             this.second = other;
             this.direction = facing;
+            // JettPack start - lithium: cached_hashcode
+            int hash = this.first.hashCode();
+            hash = 31 * hash + this.second.hashCode();
+            hash = 31 * hash + this.direction.hashCode();
+            this.hash = hash;
+            // JettPack end
         }
 
         public boolean equals(Object object) {
@@ -632,11 +639,7 @@ public class Block extends BlockBehaviour implements ItemLike {
         }
 
         public int hashCode() {
-            int i = this.first.hashCode();
-
-            i = 31 * i + this.second.hashCode();
-            i = 31 * i + this.direction.hashCode();
-            return i;
+            return this.hash; // JettPack
         }
     }
 }