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Leaf/patches/server/0061-SparklyPaper-Cache-coordinate-key-used-for-nearby-pl.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: MrPowerGamerBR <git@mrpowergamerbr.com>
Date: Wed, 22 Nov 2023 11:07:07 -0300
Subject: [PATCH] SparklyPaper: Cache coordinate key used for nearby players
when ticking chunks
Original project: https://github.com/SparklyPower/SparklyPaper
The "getChunkKey(...)" call is a bit expensive, using 0.24% of CPU time with 19k chunks loaded
So instead of paying the price on each tick, we pay the price when the chunk is loaded
Which, if you think about it, is actually better, since we tick chunks more than we load chunks
diff --git a/src/main/java/io/papermc/paper/util/player/NearbyPlayers.java b/src/main/java/io/papermc/paper/util/player/NearbyPlayers.java
index f164256d59b761264876ca0c85f812d101bfd5de..10465a33d90a1e43b9dbd7764c895dd39ef11b1a 100644
--- a/src/main/java/io/papermc/paper/util/player/NearbyPlayers.java
+++ b/src/main/java/io/papermc/paper/util/player/NearbyPlayers.java
@@ -106,6 +106,14 @@ public final class NearbyPlayers {
return chunk == null ? null : chunk.players[type.ordinal()];
}
+ // SparklyPaper start - cache coordinate key used for nearby players
+ public ReferenceList<ServerPlayer> getPlayers(final long nearbyPlayersCoordinateKey, final NearbyMapType type) {
+ final TrackedChunk chunk = this.byChunk.get(nearbyPlayersCoordinateKey);
+
+ return chunk == null ? null : chunk.players[type.ordinal()];
+ }
+ // SparklyPaper end
+
public ReferenceList<ServerPlayer> getPlayersByChunk(final int chunkX, final int chunkZ, final NearbyMapType type) {
final TrackedChunk chunk = this.byChunk.get(CoordinateUtils.getChunkKey(chunkX, chunkZ));
diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
index 70b35ce82701454017b44e8a2fb3b45fefc6420e..caef142261734aab264d1da420ff5e6d7117ea1c 100644
--- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
+++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
@@ -594,7 +594,7 @@ public class ServerChunkCache extends ChunkSource {
// Paper start - optimise chunk tick iteration
com.destroystokyo.paper.util.maplist.ReferenceList<ServerPlayer> playersNearby
- = nearbyPlayers.getPlayers(chunkcoordintpair, io.papermc.paper.util.player.NearbyPlayers.NearbyMapType.SPAWN_RANGE);
+ = nearbyPlayers.getPlayers(chunk1.nearbyPlayersCoordinateKey, io.papermc.paper.util.player.NearbyPlayers.NearbyMapType.SPAWN_RANGE); // nearbyPlayers.getPlayers(chunkcoordintpair, io.papermc.paper.util.player.NearbyPlayers.NearbyMapType.SPAWN_RANGE); // SparklyPaper - cache coordinate key used for nearby players
if (playersNearby == null) {
continue;
}
diff --git a/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java b/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java
index f7e5e016a7028a9196e689e950805b0d5b31fe38..d0285843920f78e05ce07b1b0b2d8ce97ec8041e 100644
--- a/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java
+++ b/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java
@@ -62,7 +62,7 @@ public abstract class ChunkAccess implements BlockGetter, BiomeManager.NoiseBiom
protected final ShortList[] postProcessing;
protected volatile boolean unsaved;
private volatile boolean isLightCorrect;
- protected final ChunkPos chunkPos; public final long coordinateKey; public final int locX; public final int locZ; // Paper - cache coordinate key
+ protected final ChunkPos chunkPos; public final long coordinateKey; public final long nearbyPlayersCoordinateKey; public final int locX; public final int locZ; // Paper - cache coordinate key // SparklyPaper - cache coordinate key used for nearby players
private long inhabitedTime;
/** @deprecated */
@Nullable
@@ -136,7 +136,7 @@ public abstract class ChunkAccess implements BlockGetter, BiomeManager.NoiseBiom
}
// Paper end - rewrite light engine
this.locX = pos.x; this.locZ = pos.z; // Paper - reduce need for field lookups
- this.chunkPos = pos; this.coordinateKey = ChunkPos.asLong(locX, locZ); // Paper - cache long key
+ this.chunkPos = pos; this.coordinateKey = ChunkPos.asLong(locX, locZ); this.nearbyPlayersCoordinateKey = io.papermc.paper.util.CoordinateUtils.getChunkKey(locX, locZ); // Paper - cache long key // SparklyPaper - cache coordinate key used for nearby players
this.upgradeData = upgradeData;
this.levelHeightAccessor = heightLimitView;
this.sections = new LevelChunkSection[heightLimitView.getSectionsCount()];