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PaperMC/patches/unapplied/server/9999-Optimise-nearby-player-retrieval.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Sat, 23 Sep 2023 23:15:52 -0700
Subject: [PATCH] Optimise nearby player retrieval
Instead of searching/testing every player online on the server,
we can instead use the nearby player tracking system to reduce
the number of tests per search.
Feature patch
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
Updated Upstream (Bukkit/CraftBukkit) (#10691) Updated Upstream (Bukkit/CraftBukkit) Upstream has released updates that appear to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing Bukkit Changes: fa99e752 PR-1007: Add ItemMeta#getAsComponentString() 94a91782 Fix copy-pasted BlockType.Typed documentation 9b34ac8c Largely restore deprecated PotionData API 51a6449b PR-1008: Deprecate ITEMS_TOOLS, removed in 1.20.5 702d15fe Fix Javadoc reference 42f6cdf4 PR-919: Add internal ItemType and BlockType, delegate Material methods to them 237bb37b SPIGOT-1166, SPIGOT-7647: Expose Damager BlockState in EntityDamageByBlockEvent 035ea146 SPIGOT-6993: Allow #setVelocity to change the speed of a fireball and add a note to #setDirection about it 8c7880fb PR-1004: Improve field rename handling and centralize conversion between bukkit and string more 87c90e93 SPIGOT-7650: Add DamageSource for EntityDeathEvent and PlayerDeathEvent CraftBukkit Changes: 4af0f22e8 SPIGOT-7664: Item meta should prevail over block states c2ccc46ec SPIGOT-7666: Fix access to llama and horse special slot 124ac66d7 SPIGOT-7665: Fix ThrownPotion#getEffects() implementation only bringing custom effects 66f1f439a Restore null page behaviour of signed books even though not strictly allowed by API 6118e5398 Fix regression listening to minecraft:brand custom payloads c1a26b366 Fix unnecessary and potential not thread-safe chat visibility check 12360a7ec Remove unused imports 147b098b4 PR-1397: Add ItemMeta#getAsComponentString() 428aefe0e Largely restore deprecated PotionData API afe5b5ee9 PR-1275: Add internal ItemType and BlockType, delegate Material methods to them 8afeafa7d SPIGOT-1166, SPIGOT-7647: Expose Damager BlockState in EntityDamageByBlockEvent 4e7d749d4 SPIGOT-6993: Allow #setVelocity to change the speed of a fireball and add a note to #setDirection about it 441880757 Support both entity_data and bucket_entity_data on axolotl/fish buckets 0e22fdd1e Fix custom direct BlockState being not correctly set in DamageSource f2182ed47 SPIGOT-7659: TropicalFishBucketMeta should use BUCKET_ENTITY_DATA 2a6207fe1 PR-1393: Improve field rename handling and centralize conversion between bukkit and string more c024a5039 SPIGOT-7650: Add DamageSource for EntityDeathEvent and PlayerDeathEvent 741b84480 PR-1390: Improve internal handling of damage sources 0364df4e1 SPIGOT-7657: Error when loading angry entities
2024-05-11 23:48:37 +02:00
index d4376ed215d97066a21e462fae2a0e25ad8a16a1..aab652174a8175765cad548f7c61ce353ca74803 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
2024-04-25 14:23:55 +02:00
@@ -581,6 +581,115 @@ public class ServerLevel extends Level implements WorldGenLevel {
this.lagCompensationTick = (System.nanoTime() - net.minecraft.server.MinecraftServer.SERVER_INIT) / (java.util.concurrent.TimeUnit.MILLISECONDS.toNanos(50L));
}
// Paper end - lag compensation
+ // Paper start - optimise nearby player retrieval
+ @Override
+ public java.util.List<net.minecraft.world.entity.player.Player> getNearbyPlayers(net.minecraft.world.entity.ai.targeting.TargetingConditions targetPredicate,
+ net.minecraft.world.entity.LivingEntity entity,
+ net.minecraft.world.phys.AABB box) {
+ return this.getNearbyEntities(Player.class, targetPredicate, entity, box);
+ }
+
+ @Override
+ public Player getNearestPlayer(double x, double y, double z, double maxDistance, @Nullable Predicate<Entity> targetPredicate) {
+ if (maxDistance > 0.0D) {
+ io.papermc.paper.util.player.NearbyPlayers players = this.chunkSource.chunkMap.getNearbyPlayers();
+
+ com.destroystokyo.paper.util.maplist.ReferenceList<ServerPlayer> nearby = players.getPlayersByBlock(
+ io.papermc.paper.util.CoordinateUtils.getBlockCoordinate(x),
+ io.papermc.paper.util.CoordinateUtils.getBlockCoordinate(z),
+ io.papermc.paper.util.player.NearbyPlayers.NearbyMapType.GENERAL
+ );
+
+ if (nearby == null) {
+ return null;
+ }
+
+ ServerPlayer nearest = null;
+ double nearestDist = maxDistance * maxDistance;
+ Object[] rawData = nearby.getRawData();
+ for (int i = 0, len = nearby.size(); i < len; ++i) {
+ ServerPlayer player = (ServerPlayer)rawData[i];
+ double dist = player.distanceToSqr(x, y, z);
+ if (dist >= nearestDist) {
+ continue;
+ }
+
+ if (targetPredicate == null || targetPredicate.test(player)) {
+ nearest = player;
+ nearestDist = dist;
+ }
+ }
+
+ return nearest;
+ } else {
+ ServerPlayer nearest = null;
+ double nearestDist = Double.MAX_VALUE;
+
+ for (ServerPlayer player : this.players()) {
+ double dist = player.distanceToSqr(x, y, z);
+ if (dist >= nearestDist) {
+ continue;
+ }
+
+ if (targetPredicate == null || targetPredicate.test(player)) {
+ nearest = player;
+ nearestDist = dist;
+ }
+ }
+
+ return nearest;
+ }
+ }
+
+ @Override
+ public Player getNearestPlayer(net.minecraft.world.entity.ai.targeting.TargetingConditions targetPredicate, LivingEntity entity) {
+ return this.getNearestPlayer(targetPredicate, entity, entity.getX(), entity.getY(), entity.getZ());
+ }
+
+ @Override
+ public Player getNearestPlayer(net.minecraft.world.entity.ai.targeting.TargetingConditions targetPredicate, LivingEntity entity,
+ double x, double y, double z) {
+ double range = targetPredicate.range;
+ if (range > 0.0D) {
+ io.papermc.paper.util.player.NearbyPlayers players = this.chunkSource.chunkMap.getNearbyPlayers();
+
+ com.destroystokyo.paper.util.maplist.ReferenceList<ServerPlayer> nearby = players.getPlayersByBlock(
+ io.papermc.paper.util.CoordinateUtils.getBlockCoordinate(x),
+ io.papermc.paper.util.CoordinateUtils.getBlockCoordinate(z),
+ io.papermc.paper.util.player.NearbyPlayers.NearbyMapType.GENERAL
+ );
+
+ if (nearby == null) {
+ return null;
+ }
+
+ ServerPlayer nearest = null;
+ double nearestDist = Double.MAX_VALUE;
+ Object[] rawData = nearby.getRawData();
+ for (int i = 0, len = nearby.size(); i < len; ++i) {
+ ServerPlayer player = (ServerPlayer)rawData[i];
+ double dist = player.distanceToSqr(x, y, z);
+ if (dist >= nearestDist) {
+ continue;
+ }
+
+ if (targetPredicate.test(entity, player)) {
+ nearest = player;
+ nearestDist = dist;
+ }
+ }
+
+ return nearest;
+ } else {
+ return this.getNearestEntity(this.players(), targetPredicate, entity, x, y, z);
+ }
+ }
+
+ @Nullable
+ public Player getNearestPlayer(net.minecraft.world.entity.ai.targeting.TargetingConditions targetPredicate, double x, double y, double z) {
+ return this.getNearestPlayer(targetPredicate, null, x, y, z);
+ }
+ // Paper end - optimise nearby player retrieval
// Add env and gen to constructor, IWorldDataServer -> WorldDataServer
public ServerLevel(MinecraftServer minecraftserver, Executor executor, LevelStorageSource.LevelStorageAccess convertable_conversionsession, PrimaryLevelData iworlddataserver, ResourceKey<Level> resourcekey, LevelStem worlddimension, ChunkProgressListener worldloadlistener, boolean flag, long i, List<CustomSpawner> list, boolean flag1, @Nullable RandomSequences randomsequences, org.bukkit.World.Environment env, org.bukkit.generator.ChunkGenerator gen, org.bukkit.generator.BiomeProvider biomeProvider) {
diff --git a/src/main/java/net/minecraft/world/entity/ai/sensing/PlayerSensor.java b/src/main/java/net/minecraft/world/entity/ai/sensing/PlayerSensor.java
index 2e887e426dcd79e2dda401f127d0e01ca537e80e..65cd42ce9f553e0aa5bf248bdbf902f9d1f55460 100644
--- a/src/main/java/net/minecraft/world/entity/ai/sensing/PlayerSensor.java
+++ b/src/main/java/net/minecraft/world/entity/ai/sensing/PlayerSensor.java
@@ -21,17 +21,50 @@ public class PlayerSensor extends Sensor<LivingEntity> {
@Override
protected void doTick(ServerLevel world, LivingEntity entity) {
- List<Player> list = world.players()
- .stream()
- .filter(EntitySelector.NO_SPECTATORS)
- .filter(player -> entity.closerThan(player, 16.0))
- .sorted(Comparator.comparingDouble(entity::distanceToSqr))
- .collect(Collectors.toList());
+ // Paper start - Perf: optimise nearby player retrieval & remove streams from hot code
+ io.papermc.paper.util.player.NearbyPlayers nearbyPlayers = world.chunkSource.chunkMap.getNearbyPlayers();
+ net.minecraft.world.phys.Vec3 entityPos = entity.position();
+ com.destroystokyo.paper.util.maplist.ReferenceList<net.minecraft.server.level.ServerPlayer> nearby = nearbyPlayers.getPlayersByChunk(
+ entity.chunkPosition().x,
+ entity.chunkPosition().z,
+ io.papermc.paper.util.player.NearbyPlayers.NearbyMapType.GENERAL_REALLY_SMALL
+ );
+
+ List<Player> players = new java.util.ArrayList<>(nearby == null ? 0 : nearby.size());
+ if (nearby != null) {
+ Object[] rawData = nearby.getRawData();
+ for (int index = 0, len = nearby.size(); index < len; ++index) {
+ net.minecraft.server.level.ServerPlayer player = (net.minecraft.server.level.ServerPlayer) rawData[index];
+ if (player.isSpectator()) {
+ continue;
+ }
+ if (player.distanceToSqr(entityPos.x, entityPos.y, entityPos.z) >= (16.0 * 16.0)) {
+ continue;
+ }
+ players.add(player);
+ }
+ }
+ players.sort(Comparator.comparingDouble(entity::distanceToSqr));
Brain<?> brain = entity.getBrain();
- brain.setMemory(MemoryModuleType.NEAREST_PLAYERS, list);
- List<Player> list2 = list.stream().filter(player -> isEntityTargetable(entity, player)).collect(Collectors.toList());
- brain.setMemory(MemoryModuleType.NEAREST_VISIBLE_PLAYER, list2.isEmpty() ? null : list2.get(0));
- Optional<Player> optional = list2.stream().filter(player -> isEntityAttackable(entity, player)).findFirst();
- brain.setMemory(MemoryModuleType.NEAREST_VISIBLE_ATTACKABLE_PLAYER, optional);
+
+ brain.setMemory(MemoryModuleType.NEAREST_PLAYERS, players);
+
+ Player firstTargetable = null;
+ Player firstAttackable = null;
+ for (Player player : players) {
+ if (firstTargetable == null && Sensor.isEntityTargetable(entity, player)) {
+ firstTargetable = player;
+ }
+ if (firstAttackable == null && Sensor.isEntityAttackable(entity, player)) {
+ firstAttackable = player;
+ }
+
+ if (firstAttackable != null && firstTargetable != null) {
+ break;
+ }
+ }
+ brain.setMemory(MemoryModuleType.NEAREST_VISIBLE_PLAYER, firstTargetable);
+ brain.setMemory(MemoryModuleType.NEAREST_VISIBLE_ATTACKABLE_PLAYER, Optional.ofNullable(firstAttackable));
+ // Paper end - Perf: optimise nearby player retrieval & remove streams from hot code
}
}
diff --git a/src/main/java/net/minecraft/world/entity/ai/targeting/TargetingConditions.java b/src/main/java/net/minecraft/world/entity/ai/targeting/TargetingConditions.java
index aecb0ad814586bfc5e56755ee14379a69388b38c..d2f0c3b26d4beedb49d86e0242d843590d469d02 100644
--- a/src/main/java/net/minecraft/world/entity/ai/targeting/TargetingConditions.java
+++ b/src/main/java/net/minecraft/world/entity/ai/targeting/TargetingConditions.java
@@ -10,7 +10,7 @@ public class TargetingConditions {
public static final TargetingConditions DEFAULT = forCombat();
private static final double MIN_VISIBILITY_DISTANCE_FOR_INVISIBLE_TARGET = 2.0;
private final boolean isCombat;
- private double range = -1.0;
+ public double range = -1.0; // Paper - public
private boolean checkLineOfSight = true;
private boolean testInvisible = true;
@Nullable
diff --git a/src/main/java/net/minecraft/world/level/EntityGetter.java b/src/main/java/net/minecraft/world/level/EntityGetter.java
index 21843501355a0c0c8d594e3e5312e97861c9a777..ea0aee88c7d901034427db201c1b2430f8a1d522 100644
--- a/src/main/java/net/minecraft/world/level/EntityGetter.java
+++ b/src/main/java/net/minecraft/world/level/EntityGetter.java
@@ -233,9 +233,13 @@ public interface EntityGetter {
T livingEntity = null;
for (T livingEntity2 : entityList) {
+ // Paper start - optimise nearby player retrieval; move up
+ // don't check entities outside closest range
+ double e = livingEntity2.distanceToSqr(x, y, z);
+ if (d == -1.0 || e < d) {
+ // Paper end - move up
if (targetPredicate.test(entity, livingEntity2)) {
- double e = livingEntity2.distanceToSqr(x, y, z);
- if (d == -1.0 || e < d) {
+ // Paper - optimise nearby player retrieval; move up
d = e;
livingEntity = livingEntity2;
}