PaperMC/patches/server/0824-Optimize-player-lookups-for-beacons.patch
2024-10-27 18:39:30 +01:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Thu, 6 Jul 2023 20:17:37 -0700
Subject: [PATCH] Optimize player lookups for beacons
For larger ranges, it's better to iterate over the player list
than the entity slices.
diff --git a/src/main/java/net/minecraft/world/level/block/entity/BeaconBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/BeaconBlockEntity.java
index 2a7d896dd9a02acf6e3596e2e2e7ed50f4b88377..0e0d178f2793ab014358f534c8dc53218b89f083 100644
--- a/src/main/java/net/minecraft/world/level/block/entity/BeaconBlockEntity.java
+++ b/src/main/java/net/minecraft/world/level/block/entity/BeaconBlockEntity.java
@@ -333,7 +333,22 @@ public class BeaconBlockEntity extends BlockEntity implements MenuProvider, Name
double d0 = blockEntity != null ? blockEntity.getEffectRange() : (i * 10 + 10); // Paper - Custom beacon ranges
AABB axisalignedbb = (new AABB(blockposition)).inflate(d0).expandTowards(0.0D, (double) world.getHeight(), 0.0D);
- List<Player> list = world.getEntitiesOfClass(Player.class, axisalignedbb);
+ // Paper start - Perf: optimize player lookup for beacons
+ List<Player> list;
+ if (d0 <= 128.0) {
+ list = world.getEntitiesOfClass(Player.class, axisalignedbb);
+ } else {
+ list = new java.util.ArrayList<>();
+ for (Player player : world.players()) {
+ if (player.isSpectator()) {
+ continue;
+ }
+ if (player.getBoundingBox().intersects(axisalignedbb)) {
+ list.add(player);
+ }
+ }
+ }
+ // Paper end - Perf: optimize player lookup for beacons
return list;
}