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Only erase allay memory on non-item targets (#9570)

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* Only erase allay memory on non-item targets

Spigot incorrectly instanceOf checks the EntityTargetEvent#getTarget
against the internal ItemEntity type and removes the nearest wanted item
memory if said instanceOf check fails, (which is always the case)
causing allays to behave differently as they constantly loose their
target item.

This commit fixes the faulty behaviour by instance performing a check
against the CraftItem type.

* Reduce diff

* fix typo

---------

Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>
This commit is contained in:
Bjarne Koll 2023-08-06 02:31:10 +02:00
parent 732f98a4bf
commit f9c9ac2e65
2 changed files with 30 additions and 1 deletions
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29
patches/server/Only-erase-allay-memory-on-non-item-targets.patch Normal file
View file

@ -0,0 +1,29 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Bjarne Koll <git@lynxplay.dev>
Date: Fri, 4 Aug 2023 15:53:36 +0200
Subject: [PATCH] Only erase allay memory on non-item targets
Spigot incorrectly instanceOf checks the EntityTargetEvent#getTarget
against the internal ItemEntity type and removes the nearest wanted item
memory if said instanceOf check fails, (which is always the case)
causing allays to behave differently as they constantly loose their
target item.
This commit fixes the faulty behaviour by instance performing a check
against the CraftItem type.
diff --git a/src/main/java/net/minecraft/world/entity/ai/behavior/GoToWantedItem.java b/src/main/java/net/minecraft/world/entity/ai/behavior/GoToWantedItem.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/world/entity/ai/behavior/GoToWantedItem.java
+++ b/src/main/java/net/minecraft/world/entity/ai/behavior/GoToWantedItem.java
@@ -0,0 +0,0 @@ public class GoToWantedItem {
if (event.isCancelled()) {
return false;
}
- if (!(event.getTarget() instanceof ItemEntity)) {
+ if (!(event.getTarget() instanceof org.bukkit.craftbukkit.entity.CraftItem)) { // Paper - only erase allay memory on non-item targets
memoryaccessor2.erase();
+ return false; // Paper - only erase allay memory on non-item targets
}
entityitem = (ItemEntity) ((org.bukkit.craftbukkit.entity.CraftEntity) event.getTarget()).getHandle();

2
patches/server/Remove-streams-for-villager-AI.patch
View file

@ -120,7 +120,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
Brain<?> brain = entity.getBrain();
List<ItemEntity> list = world.getEntitiesOfClass(ItemEntity.class, entity.getBoundingBox().inflate(32.0D, 16.0D, 32.0D), (itemEntity) -> {
- return true;
+ return itemEntity.closerThan(entity, 9.0D) && entity.wantsToPickUp(itemEntity.getItem()); // Paper - move predicate into getEntities
+ return itemEntity.closerThan(entity, MAX_DISTANCE_TO_WANTED_ITEM) && entity.wantsToPickUp(itemEntity.getItem()); // Paper - move predicate into getEntities
});
- list.sort(Comparator.comparingDouble(entity::distanceToSqr));
+ list.sort((e1, e2) -> Double.compare(entity.distanceToSqr(e1), entity.distanceToSqr(e2))); // better to take the sort perf hit than using line of sight more than we need to.