Paper/patches/server/0192-EndermanEscapeEvent.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: Mon, 30 Apr 2018 13:15:55 -0400
Subject: [PATCH] EndermanEscapeEvent
Fires an event anytime an enderman intends to teleport away from the player
You may cancel this, enabling ranged attacks to damage the enderman for example.
diff --git a/src/main/java/net/minecraft/world/entity/monster/EnderMan.java b/src/main/java/net/minecraft/world/entity/monster/EnderMan.java
index 6558d005c466728bc59ffaa85af9109055dcf320..8a44d518d15cddc70de2c90d8029dba50d75ca68 100644
--- a/src/main/java/net/minecraft/world/entity/monster/EnderMan.java
+++ b/src/main/java/net/minecraft/world/entity/monster/EnderMan.java
@@ -113,6 +113,12 @@ public class EnderMan extends Monster implements NeutralMob {
this.setTarget(target, org.bukkit.event.entity.EntityTargetEvent.TargetReason.UNKNOWN, true);
}
+ // Paper start
+ private boolean tryEscape(com.destroystokyo.paper.event.entity.EndermanEscapeEvent.Reason reason) {
+ return new com.destroystokyo.paper.event.entity.EndermanEscapeEvent((org.bukkit.craftbukkit.entity.CraftEnderman) this.getBukkitEntity(), reason).callEvent();
+ }
+ // Paper end
+
@Override
public boolean setTarget(LivingEntity entityliving, org.bukkit.event.entity.EntityTargetEvent.TargetReason reason, boolean fireEvent) {
if (!super.setTarget(entityliving, reason, fireEvent)) {
@@ -267,7 +273,7 @@ public class EnderMan extends Monster implements NeutralMob {
if (this.level.isDay() && this.tickCount >= this.targetChangeTime + 600) {
float f = this.getLightLevelDependentMagicValue();
- if (f > 0.5F && this.level.canSeeSky(this.blockPosition()) && this.random.nextFloat() * 30.0F < (f - 0.4F) * 2.0F) {
+ if (f > 0.5F && this.level.canSeeSky(this.blockPosition()) && this.random.nextFloat() * 30.0F < (f - 0.4F) * 2.0F && this.tryEscape(com.destroystokyo.paper.event.entity.EndermanEscapeEvent.Reason.RUNAWAY)) { // Paper
this.setTarget((LivingEntity) null);
this.teleport();
}
@@ -378,17 +384,19 @@ public class EnderMan extends Monster implements NeutralMob {
flag = false;
}
+ if (this.tryEscape(com.destroystokyo.paper.event.entity.EndermanEscapeEvent.Reason.INDIRECT)) { // Paper start
for (int i = 0; i < 64; ++i) {
if (this.teleport()) {
return true;
}
}
+ } // Paper end
return flag;
} else {
boolean flag1 = super.hurt(source, amount);
- if (!this.level.isClientSide() && !(source.getEntity() instanceof LivingEntity) && this.random.nextInt(10) != 0) {
+ if (!this.level.isClientSide() && !(source.getEntity() instanceof LivingEntity) && this.random.nextInt(10) != 0 && this.tryEscape(source == DamageSource.DROWN ? com.destroystokyo.paper.event.entity.EndermanEscapeEvent.Reason.DROWN : com.destroystokyo.paper.event.entity.EndermanEscapeEvent.Reason.INDIRECT)) { // Paper - use to be critical hits as else, but mojang removed critical hits in 1.16.2 due to MC-185684
this.teleport();
}
@@ -608,7 +616,7 @@ public class EnderMan extends Monster implements NeutralMob {
} else {
if (this.target != null && !this.enderman.isPassenger()) {
if (this.enderman.isLookingAtMe((Player) this.target)) {
- if (this.target.distanceToSqr((Entity) this.enderman) < 16.0D) {
+ if (this.target.distanceToSqr((Entity) this.enderman) < 16.0D && this.enderman.tryEscape(com.destroystokyo.paper.event.entity.EndermanEscapeEvent.Reason.STARE)) { // Paper
this.enderman.teleport();
}