Paper/patches/server/0546-Added-world-settings-for-mobs-picking-up-loot.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: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sat, 28 Nov 2020 18:43:52 -0800
Subject: [PATCH] Added world settings for mobs picking up loot
diff --git a/src/main/java/net/minecraft/world/entity/monster/AbstractSkeleton.java b/src/main/java/net/minecraft/world/entity/monster/AbstractSkeleton.java
index 60064770f08cbee19eeb43bf7c144b6eefbc4888..c2a26b91d9065fdb52a1ded6c3295093c244d7eb 100644
--- a/src/main/java/net/minecraft/world/entity/monster/AbstractSkeleton.java
+++ b/src/main/java/net/minecraft/world/entity/monster/AbstractSkeleton.java
@@ -150,7 +150,7 @@ public abstract class AbstractSkeleton extends Monster implements RangedAttackMo
this.populateDefaultEquipmentSlots(randomsource, difficulty);
this.populateDefaultEquipmentEnchantments(randomsource, difficulty);
this.reassessWeaponGoal();
- this.setCanPickUpLoot(randomsource.nextFloat() < 0.55F * difficulty.getSpecialMultiplier());
+ this.setCanPickUpLoot(this.level.paperConfig().entities.behavior.mobsCanAlwaysPickUpLoot.skeletons || randomsource.nextFloat() < 0.55F * difficulty.getSpecialMultiplier()); // Paper
if (this.getItemBySlot(EquipmentSlot.HEAD).isEmpty()) {
LocalDate localdate = LocalDate.now();
int i = localdate.get(ChronoField.DAY_OF_MONTH);
diff --git a/src/main/java/net/minecraft/world/entity/monster/Zombie.java b/src/main/java/net/minecraft/world/entity/monster/Zombie.java
index 67fe3b79b6fe4064b26f87734174a394b9e2b3e3..c84bae4aac13698893420e669ca323194e28ca48 100644
--- a/src/main/java/net/minecraft/world/entity/monster/Zombie.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Zombie.java
@@ -509,7 +509,7 @@ public class Zombie extends Monster {
Object object = super.finalizeSpawn(world, difficulty, spawnReason, entityData, entityNbt);
float f = difficulty.getSpecialMultiplier();
- this.setCanPickUpLoot(randomsource.nextFloat() < 0.55F * f);
+ this.setCanPickUpLoot(this.level.paperConfig().entities.behavior.mobsCanAlwaysPickUpLoot.zombies || randomsource.nextFloat() < 0.55F * f); // Paper
if (object == null) {
object = new Zombie.ZombieGroupData(Zombie.getSpawnAsBabyOdds(randomsource), true);
}