From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Andrew Steinborn <git@steinborn.me>
Date: Mon, 18 Jan 2021 20:45:25 -0500
Subject: [PATCH] (PaperPR) Inline shift direction fields

Removes a layer of indirection for EnumDirection.getAdjacent(X|Y|Z)(), which is in the
critical section for much of the server, including the lighting engine.

diff --git a/src/main/java/net/minecraft/server/EnumDirection.java b/src/main/java/net/minecraft/server/EnumDirection.java
index 2f1e7f0d753aace655210e32ddec59a3c46aade9..74e95bfcae5212c77383f7b8780dce293fda02dc 100644
--- a/src/main/java/net/minecraft/server/EnumDirection.java
+++ b/src/main/java/net/minecraft/server/EnumDirection.java
@@ -49,6 +49,11 @@ public enum EnumDirection implements INamable {
     }, (enumdirection, enumdirection1) -> {
         throw new IllegalArgumentException("Duplicate keys");
     }, Long2ObjectOpenHashMap::new));
+    // Paper start
+    private final int adjX;
+    private final int adjY;
+    private final int adjZ;
+    // Paper end
 
     private EnumDirection(int i, int j, int k, String s, EnumDirection.EnumAxisDirection enumdirection_enumaxisdirection, EnumDirection.EnumAxis enumdirection_enumaxis, BaseBlockPosition baseblockposition) {
         this.g = i;
@@ -58,6 +63,11 @@ public enum EnumDirection implements INamable {
         this.k = enumdirection_enumaxis;
         this.l = enumdirection_enumaxisdirection;
         this.m = baseblockposition;
+        // Paper start
+        this.adjX = baseblockposition.getX();
+        this.adjY = baseblockposition.getY();
+        this.adjZ = baseblockposition.getZ();
+        // Paper end
     }
 
     public static EnumDirection[] a(Entity entity) {
@@ -151,15 +161,15 @@ public enum EnumDirection implements INamable {
     }
 
     public int getAdjacentX() {
-        return this.m.getX();
+        return this.adjX; // Paper
     }
 
     public int getAdjacentY() {
-        return this.m.getY();
+        return this.adjY; // Paper
     }
 
     public int getAdjacentZ() {
-        return this.m.getZ();
+        return this.adjZ; // Paper
     }
 
     public String m() {