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Leaf/patches/server/0057-SparklyPaper-Optimize-canSee-checks.patch
Dreeam 72d744bf48 Updated Upstream (Paper/Gale)
Upstream has released updates that appear to apply and compile correctly

Paper Changes:
PaperMC/Paper@41bc31b Update paperweight to 1.7.3 (#11445)
PaperMC/Paper@e17eb6b Improve entity effect API (#11444)
PaperMC/Paper@7b03141 Add startingBrewTime (#11406)
PaperMC/Paper@355b1cb Add API for explosions to damage the explosion cause (#11180)
PaperMC/Paper@6d7a438 Call bucket events for cauldrons (#7486)

Gale Changes:
Dreeam-qwq/Gale@2c4cde4 Updated Upstream (Paper)
Dreeam-qwq/Gale@d4d81da [ci skip] Update paperweight
2024-09-29 11:39:11 -04:00

62 lines
4.6 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: MrPowerGamerBR <git@mrpowergamerbr.com>
Date: Thu, 23 Nov 2023 14:36:47 -0300
Subject: [PATCH] SparklyPaper: Optimize "canSee" checks
Original project: https://github.com/SparklyPower/SparklyPaper
The "canSee" checks is in a hot path, invoked by each entity for each player on the server if they are in tracking range, so optimizing it is pretty nice
First, we change the original "HashMap" to fastutil's "Object2ObjectOpenHashMap", because the containsKey throughput is better
Then, we add a "isEmpty()" check before attempting to check if the map contains something
This seems stupid, but it does seem that it improves the performance a bit, and it makes sense, "containsKey(...)" does not attempt to check the map size before attempting to check if the map contains the key
We also create a "canSee" method tailored for "ChunkMap#updatePlayer()", a method without the equals check (the "updatePlayer()" already checks if the entity is the same entity) because the CraftPlayer's `equals()` check is a *bit* expensive compared to only checking the object's identity, and because the identity has already been check, we don't need to check it twice.
diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
index 4d91b50e527320647f6c9aa20fc5da071c3fdee0..dde015810f6e914ad99dcb8ab66c7aa33e1b8c26 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -1246,7 +1246,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
// Paper end - Configurable entity tracking range by Y
// CraftBukkit start - respect vanish API
- if (flag && !player.getBukkitEntity().canSee(this.entity.getBukkitEntity())) { // Paper - only consider hits
+ if (flag && !player.getBukkitEntity().canSeeChunkMapUpdatePlayer(this.entity.getBukkitEntity())) { // Paper - only consider hits // SparklyPaper - optimize canSee checks
flag = false;
}
// CraftBukkit end
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index c6964b6027e0ac57e3e01deae0da22665f2afc40..801a237b666fe8f26e477d848b1f9e31a4025fd0 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -200,7 +200,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
private boolean hasPlayedBefore = false;
private final ConversationTracker conversationTracker = new ConversationTracker();
private final Set<String> channels = new HashSet<String>();
- private final Map<UUID, Set<WeakReference<Plugin>>> invertedVisibilityEntities = new HashMap<>();
+ private final Map<UUID, Set<WeakReference<Plugin>>> invertedVisibilityEntities = new it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap<>(); // SparklyPaper - optimize canSee checks
private final Set<UUID> unlistedEntities = new HashSet<>(); // Paper - Add Listing API for Player
private static final WeakHashMap<Plugin, WeakReference<Plugin>> pluginWeakReferences = new WeakHashMap<>();
private int hash = 0;
@@ -2269,9 +2269,16 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
@Override
public boolean canSee(org.bukkit.entity.Entity entity) {
- return this.equals(entity) || entity.isVisibleByDefault() ^ this.invertedVisibilityEntities.containsKey(entity.getUniqueId()); // SPIGOT-7312: Can always see self
+ return this.equals(entity) || entity.isVisibleByDefault() ^ (!invertedVisibilityEntities.isEmpty() && this.invertedVisibilityEntities.containsKey(entity.getUniqueId())); // SPIGOT-7312: Can always see self // SparklyPaper - optimize canSee checks
}
+ // SparklyPaper - optimize canSee checks
+ // The check in ChunkMap#updatePlayer already rejects if it is the same entity, so we don't need to check it twice, especially because CraftPlayer's equals check is a bit expensive
+ public boolean canSeeChunkMapUpdatePlayer(org.bukkit.entity.Entity entity) {
+ return entity.isVisibleByDefault() ^ (!invertedVisibilityEntities.isEmpty() && this.invertedVisibilityEntities.containsKey(entity.getUniqueId())); // SPIGOT-7312: Can always see self // SparklyPaper - optimize canSee checks
+ }
+ // SparklyPaper end
+
public boolean canSeePlayer(UUID uuid) {
org.bukkit.entity.Entity entity = this.getServer().getPlayer(uuid);