Paper/patches/server/0101-Only-send-Dragon-Wither-Death-sounds-to-same-world.patch
Spottedleaf 01a13871de
Rewrite chunk system (#8177)
Patch documentation to come

Issues with the old system that are fixed now:
- World generation does not scale with cpu cores effectively.
- Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps.
- Unreliable prioritisation of chunk gen/load calls that block the main thread.
- Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved.
- Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal.
- Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles.

The above list is not complete. The patch documentation will complete it.

New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil.

Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft.

The old legacy chunk system patches have been moved to the removed folder in case we need them again.
2022-09-26 01:02:51 -07:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Tue, 31 May 2016 22:53:50 -0400
Subject: [PATCH] Only send Dragon/Wither Death sounds to same world
Also fix view distance lookup
diff --git a/src/main/java/net/minecraft/world/entity/boss/enderdragon/EnderDragon.java b/src/main/java/net/minecraft/world/entity/boss/enderdragon/EnderDragon.java
index dd1d606543da93e6068b8fa4239d369a4b648523..e6a6b0a298e69ce975eac413723f068aaef72ec0 100644
--- a/src/main/java/net/minecraft/world/entity/boss/enderdragon/EnderDragon.java
+++ b/src/main/java/net/minecraft/world/entity/boss/enderdragon/EnderDragon.java
@@ -654,7 +654,7 @@ public class EnderDragon extends Mob implements Enemy {
// CraftBukkit start - Use relative location for far away sounds
// this.world.b(1028, this.getChunkCoordinates(), 0);
int viewDistance = ((ServerLevel) this.level).getCraftServer().getViewDistance() * 16;
- for (net.minecraft.server.level.ServerPlayer player : this.level.getServer().getPlayerList().players) {
+ for (net.minecraft.server.level.ServerPlayer player : (List<net.minecraft.server.level.ServerPlayer>) ((ServerLevel)level).players()) {
double deltaX = this.getX() - player.getX();
double deltaZ = this.getZ() - player.getZ();
double distanceSquared = deltaX * deltaX + deltaZ * deltaZ;
diff --git a/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java b/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java
index 78bffaddbc9e478fb53639396e9c4970e9961b21..1fc862a3b5d40a45cf91703051bcfb06ec1b177a 100644
--- a/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java
+++ b/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java
@@ -272,7 +272,7 @@ public class WitherBoss extends Monster implements PowerableMob, RangedAttackMob
// CraftBukkit start - Use relative location for far away sounds
// this.world.globalLevelEvent(1023, new BlockPosition(this), 0);
int viewDistance = ((ServerLevel) this.level).getCraftServer().getViewDistance() * 16;
- for (ServerPlayer player : (List<ServerPlayer>) MinecraftServer.getServer().getPlayerList().players) {
+ for (ServerPlayer player : (List<ServerPlayer>)this.level.players()) { // Paper
double deltaX = this.getX() - player.getX();
double deltaZ = this.getZ() - player.getZ();
double distanceSquared = deltaX * deltaX + deltaZ * deltaZ;