PaperMC/patches/server/0143-Shoulder-Entities-Release-API.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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Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sat, 17 Jun 2017 15:18:30 -0400
Subject: [PATCH] Shoulder Entities Release API
diff --git a/src/main/java/net/minecraft/world/entity/player/Player.java b/src/main/java/net/minecraft/world/entity/player/Player.java
index 07a8abb714a9dfd470ab0486c336e3b58ea927a1..d4e3649f4d66545842a7f8cd3dabad39d185046e 100644
--- a/src/main/java/net/minecraft/world/entity/player/Player.java
+++ b/src/main/java/net/minecraft/world/entity/player/Player.java
@@ -2036,20 +2036,44 @@ public abstract class Player extends LivingEntity {
}
+ // Paper start
+ public Entity releaseLeftShoulderEntity() {
+ Entity entity = this.spawnEntityFromShoulder0(this.getShoulderEntityLeft());
+ if (entity != null) {
+ this.setShoulderEntityLeft(new CompoundTag());
+ }
+ return entity;
+ }
+
+ public Entity releaseRightShoulderEntity() {
+ Entity entity = this.spawnEntityFromShoulder0(this.getShoulderEntityRight());
+ if (entity != null) {
+ this.setShoulderEntityRight(new CompoundTag());
+ }
+ return entity;
+ }
+ // Paper - maintain old signature
private boolean spawnEntityFromShoulder(CompoundTag nbttagcompound) { // CraftBukkit void->boolean
- if (!this.level.isClientSide && !nbttagcompound.isEmpty()) {
+ return spawnEntityFromShoulder0(nbttagcompound) != null;
+ }
+
+ // Paper - return entity
+ private Entity spawnEntityFromShoulder0(@Nullable CompoundTag nbttagcompound) {
+ if (!this.level.isClientSide && nbttagcompound != null && !nbttagcompound.isEmpty()) {
return EntityType.create(nbttagcompound, this.level).map((entity) -> { // CraftBukkit
if (entity instanceof TamableAnimal) {
((TamableAnimal) entity).setOwnerUUID(this.uuid);
}
entity.setPos(this.getX(), this.getY() + 0.699999988079071D, this.getZ());
- return ((ServerLevel) this.level).addWithUUID(entity, CreatureSpawnEvent.SpawnReason.SHOULDER_ENTITY); // CraftBukkit
- }).orElse(true); // CraftBukkit
+ boolean addedToWorld = ((ServerLevel) this.level).addWithUUID(entity, CreatureSpawnEvent.SpawnReason.SHOULDER_ENTITY); // CraftBukkit
+ return addedToWorld ? entity : null;
+ }).orElse(null); // CraftBukkit // Paper - true -> null
}
- return true; // CraftBukkit
+ return null; // Paper - return null
}
+ // Paper end
@Override
public abstract boolean isSpectator();
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
index 19549dda26c24388bd13a5a2579789e2d1e3ad88..3ca0d08a9e6511b8a96abcf0807a77d52f303a44 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
@@ -507,6 +507,32 @@ public class CraftHumanEntity extends CraftLivingEntity implements HumanEntity {
this.getHandle().getCooldowns().addCooldown(CraftMagicNumbers.getItem(material), ticks);
}
+ // Paper start
+ @Override
+ public org.bukkit.entity.Entity releaseLeftShoulderEntity() {
+ if (!getHandle().getShoulderEntityLeft().isEmpty()) {
+ Entity entity = getHandle().releaseLeftShoulderEntity();
+ if (entity != null) {
+ return entity.getBukkitEntity();
+ }
+ }
+
+ return null;
+ }
+
+ @Override
+ public org.bukkit.entity.Entity releaseRightShoulderEntity() {
+ if (!getHandle().getShoulderEntityRight().isEmpty()) {
+ Entity entity = getHandle().releaseRightShoulderEntity();
+ if (entity != null) {
+ return entity.getBukkitEntity();
+ }
+ }
+
+ return null;
+ }
+ // Paper end
+
@Override
public boolean discoverRecipe(NamespacedKey recipe) {
return this.discoverRecipes(Arrays.asList(recipe)) != 0;