From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Aikar 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/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java index 95f229dcb1b003215c602847a351b313fb0980ba..67c5d0a53f50896daa6bba3ac2816cfc15b0af75 100644 --- a/src/main/java/net/minecraft/server/players/PlayerList.java +++ b/src/main/java/net/minecraft/server/players/PlayerList.java @@ -1135,16 +1135,40 @@ public abstract class PlayerList { } public void broadcast(@Nullable net.minecraft.world.entity.player.Player player, double x, double y, double z, double distance, ResourceKey worldKey, Packet packet) { - for (int i = 0; i < this.players.size(); ++i) { - ServerPlayer entityplayer = (ServerPlayer) this.players.get(i); + ServerLevel world = null; + if (player != null && player.level instanceof ServerLevel) { + world = (ServerLevel) player.level; + } - // CraftBukkit start - Test if player receiving packet can see the source of the packet - if (player != null && player instanceof ServerPlayer && !entityplayer.getBukkitEntity().canSee(((ServerPlayer) player).getBukkitEntity())) { - continue; + // Paper start + if (world == null) { + world = server.getLevel(worldKey); + } + net.minecraft.server.level.ChunkMap chunkMap = world != null ? world.getChunkSource().chunkMap : 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 nearbyPlayers = chunkMap.playerViewDistanceBroadcastMap.getObjectsInRange(MCUtil.fastFloor(x) >> 4, MCUtil.fastFloor(z) >> 4); + if (nearbyPlayers == null) { + return; } + backingSet = nearbyPlayers.getBackingSet(); + } + + for (Object object : backingSet) { + if (!(object instanceof ServerPlayer)) continue; + ServerPlayer entityplayer = (ServerPlayer) 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 != player && entityplayer.level.dimension() == worldKey) { + if (entityplayer != player && entityplayer.level.dimension() == worldKey && (!(player instanceof ServerPlayer) || entityplayer.getBukkitEntity().canSee(((ServerPlayer) player).getBukkitEntity()))) { // Paper double d4 = x - entityplayer.getX(); double d5 = y - entityplayer.getY(); double d6 = z - entityplayer.getZ();