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Paper/patches/server/0482-Inline-shift-direction-fields.patch

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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] 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/core/Direction.java b/src/main/java/net/minecraft/core/Direction.java
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index 69ccada8ea78c05d3fb886222698c07dee421506..3fde5abde736b2c19d8819d9aec0397a0245ccd1 100644
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--- a/src/main/java/net/minecraft/core/Direction.java
+++ b/src/main/java/net/minecraft/core/Direction.java
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@@ -57,6 +57,12 @@ public enum Direction implements StringRepresentable {
.sorted(Comparator.comparingInt(direction -> direction.data2d))
.toArray(Direction[]::new);
+ // Paper start - Perf: Inline shift direction fields
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+ private final int adjX;
+ private final int adjY;
+ private final int adjZ;
+ // Paper end - Perf: Inline shift direction fields
+
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private Direction(
final int id,
final int idOpposite,
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@@ -74,6 +80,11 @@ public enum Direction implements StringRepresentable {
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this.axisDirection = direction;
this.normal = vector;
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this.normalVec3 = Vec3.atLowerCornerOf(vector);
+ // Paper start - Perf: Inline shift direction fields
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+ this.adjX = vector.getX();
+ this.adjY = vector.getY();
+ this.adjZ = vector.getZ();
+ // Paper end - Perf: Inline shift direction fields
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}
public static Direction[] orderedByNearest(Entity entity) {
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@@ -247,15 +258,15 @@ public enum Direction implements StringRepresentable {
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}
public int getStepX() {
- return this.normal.getX();
+ return this.adjX; // Paper - Perf: Inline shift direction fields
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}
public int getStepY() {
- return this.normal.getY();
+ return this.adjY; // Paper - Perf: Inline shift direction fields
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}
public int getStepZ() {
- return this.normal.getZ();
+ return this.adjZ; // Paper - Perf: Inline shift direction fields
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}
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public Vector3f step() {