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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sat, 23 May 2020 17:03:41 -0400
Subject: [PATCH] Optimize sending packets to nearby locations (sounds/effects)
Instead of using the entire world or player list, use the distance
maps to only iterate players who are even seeing the chunk the packet
is originating from.
This will drastically cut down on packet sending cost for worlds with
lots of players in them.
diff --git a/src/main/java/net/minecraft/server/PlayerList.java b/src/main/java/net/minecraft/server/PlayerList.java
index 273dce1feae284204a643dd06468e0b903745a1f..f8e0742ea9a42cf496b4b7e00201fed025b83889 100644
--- a/src/main/java/net/minecraft/server/PlayerList.java
+++ b/src/main/java/net/minecraft/server/PlayerList.java
@@ -1059,16 +1059,40 @@ public abstract class PlayerList {
}
public void sendPacketNearby(@Nullable EntityHuman entityhuman, double d0, double d1, double d2, double d3, ResourceKey<World> resourcekey, Packet<?> packet) {
- for (int i = 0; i < this.players.size(); ++i) {
- EntityPlayer entityplayer = (EntityPlayer) this.players.get(i);
+ WorldServer world = null;
+ if (entityhuman != null && entityhuman.world instanceof WorldServer) {
+ world = (WorldServer) entityhuman.world;
+ }
- // CraftBukkit start - Test if player receiving packet can see the source of the packet
- if (entityhuman != null && entityhuman instanceof EntityPlayer && !entityplayer.getBukkitEntity().canSee(((EntityPlayer) entityhuman).getBukkitEntity())) {
- continue;
+ // Paper start
+ if (world == null) {
+ world = server.getWorldServer(resourcekey);
+ }
+ PlayerChunkMap chunkMap = world != null ? world.getChunkProvider().playerChunkMap : null;
+ Object[] backingSet;
+ if (chunkMap == null) {
+ // Really shouldn't happen...
+ backingSet = world != null ? world.players.toArray() : players.toArray();
+ } else {
+ com.destroystokyo.paper.util.misc.PooledLinkedHashSets.PooledObjectLinkedOpenHashSet<EntityPlayer> nearbyPlayers = chunkMap.playerViewDistanceBroadcastMap.getObjectsInRange(MCUtil.fastFloor(d0) >> 4, MCUtil.fastFloor(d2) >> 4);
+ if (nearbyPlayers == null) {
+ return;
}
+ backingSet = nearbyPlayers.getBackingSet();
+ }
+
+ for (Object object : backingSet) {
+ if (!(object instanceof EntityPlayer)) continue;
+ EntityPlayer entityplayer = (EntityPlayer) object;
+ // Paper end
+
+ // CraftBukkit start - Test if player receiving packet can see the source of the packet
+ //if (entityhuman != null && entityhuman instanceof EntityPlayer && !entityplayer.getBukkitEntity().canSee(((EntityPlayer) entityhuman).getBukkitEntity())) { // Paper
+ //continue; // Paper
+ //} // Paper
// CraftBukkit end
- if (entityplayer != entityhuman && entityplayer.world.getDimensionKey() == resourcekey) {
+ if (entityplayer != entityhuman && entityplayer.world.getDimensionKey() == resourcekey && (!(entityhuman instanceof EntityPlayer) || entityplayer.getBukkitEntity().canSee(((EntityPlayer) entityhuman).getBukkitEntity()))) { // Paper
double d4 = d0 - entityplayer.locX();
double d5 = d1 - entityplayer.locY();
double d6 = d2 - entityplayer.locZ();
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