PaperMC/patches/server/0133-Add-option-to-make-parrots-stay-on-shoulders-despite.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: Zach Brown <zach.brown@destroystokyo.com>
Date: Tue, 16 May 2017 21:29:08 -0500
Subject: [PATCH] Add option to make parrots stay on shoulders despite movement
Makes parrots not fall off whenever the player changes height, or touches water, or gets hit by a passing leaf.
Instead, switches the behavior so that players have to sneak to make the birds leave.
I suspect Mojang may switch to this behavior before full release.
To be converted into a Paper-API event at some point in the future?
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 9df3561fca35b1649de1545e924bd96ec5f80089..f8955429ec4cfe778de77a7db5fef624c20e4318 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -2464,6 +2464,13 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
switch (packet.getAction()) {
case PRESS_SHIFT_KEY:
this.player.setShiftKeyDown(true);
+
+ // Paper start - Hang on!
+ if (this.player.level.paperConfig().entities.behavior.parrotsAreUnaffectedByPlayerMovement) {
+ this.player.removeEntitiesOnShoulder();
+ }
+ // Paper end
+
break;
case RELEASE_SHIFT_KEY:
this.player.setShiftKeyDown(false);
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 1e3ac1d2cb5adf4c0fa3b703f2ecdc32cd8ce240..07a8abb714a9dfd470ab0486c336e3b58ea927a1 100644
--- a/src/main/java/net/minecraft/world/entity/player/Player.java
+++ b/src/main/java/net/minecraft/world/entity/player/Player.java
@@ -588,7 +588,7 @@ public abstract class Player extends LivingEntity {
this.playShoulderEntityAmbientSound(this.getShoulderEntityLeft());
this.playShoulderEntityAmbientSound(this.getShoulderEntityRight());
if (!this.level.isClientSide && (this.fallDistance > 0.5F || this.isInWater()) || this.abilities.flying || this.isSleeping() || this.isInPowderSnow) {
- this.removeEntitiesOnShoulder();
+ if (!this.level.paperConfig().entities.behavior.parrotsAreUnaffectedByPlayerMovement) this.removeEntitiesOnShoulder(); // Paper - Hang on!
}
}