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Paper/patches/server/0741-EntityPickupItemEvent-fixes.patch
Spottedleaf 8c5b837e05 Rework async chunk api implementation
Firstly, the old methods all routed to the CompletableFuture method.
However, the CF method could not guarantee that if the caller
was off-main that the future would be "completed" on-main. Since
the callback methods used the CF one, this meant that the callback
methods did not guarantee that the callbacks were to be called on
the main thread.

Now, all methods route to getChunkAtAsync(x, z, gen, urgent, cb)
so that the methods with the callback are guaranteed to invoke
the callback on the main thread. The CF behavior remains unchanged;
it may still appear to complete on main if invoked off-main.

Secondly, remove the scheduleOnMain invocation in the async
chunk completion. This unnecessarily delays the callback
by 1 tick.

Thirdly, add getChunksAtAsync(minX, minZ, maxX, maxZ, ...) which
will load chunks within an area. This method is provided as a helper
as keeping all chunks loaded within an area can be complicated to
implement for plugins (due to the lacking ticket API), and is
already implemented internally anyways.

Fourthly, remove the ticket addition that occured with getChunkAt
and getChunkAtAsync. The ticket addition may delay the unloading
of the chunk unnecessarily. It also fixes a very rare timing bug
where the future/callback would be completed after the chunk
unloads.
2024-11-18 23:00:59 -08:00

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4.9 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Mon, 4 Jul 2022 21:45:36 -0700
Subject: [PATCH] EntityPickupItemEvent fixes
Fixes double firing of the event in PiglinAi
Fixes cancelling the event for piglins still triggering the
advancement trigger
Fires the event when a Raider tries to pick up a raid banner
to become raid leader.
diff --git a/src/main/java/net/minecraft/world/entity/monster/piglin/Piglin.java b/src/main/java/net/minecraft/world/entity/monster/piglin/Piglin.java
index 15a49e3541c8b45db5e472a64fa0cb94c5a72f67..e04d2c5e75dc774fe893a552474fdb8045c32693 100644
--- a/src/main/java/net/minecraft/world/entity/monster/piglin/Piglin.java
+++ b/src/main/java/net/minecraft/world/entity/monster/piglin/Piglin.java
@@ -429,7 +429,7 @@ public class Piglin extends AbstractPiglin implements CrossbowAttackMob, Invento
@Override
protected void pickUpItem(ServerLevel world, ItemEntity itemEntity) {
- this.onItemPickup(itemEntity);
+ // this.onItemPickup(itemEntity); // Paper - EntityPickupItemEvent fixes; call in PiglinAi#pickUpItem after EntityPickupItemEvent is fired
PiglinAi.pickUpItem(world, this, itemEntity);
}
diff --git a/src/main/java/net/minecraft/world/entity/monster/piglin/PiglinAi.java b/src/main/java/net/minecraft/world/entity/monster/piglin/PiglinAi.java
index 5c26beef2d3f3d4afa51950ddeb7089989218462..e283b1296c1e831376bfe9491cbf02ed4b3fffe4 100644
--- a/src/main/java/net/minecraft/world/entity/monster/piglin/PiglinAi.java
+++ b/src/main/java/net/minecraft/world/entity/monster/piglin/PiglinAi.java
@@ -244,11 +244,16 @@ public class PiglinAi {
ItemStack itemstack;
// CraftBukkit start
- if (itemEntity.getItem().is(Items.GOLD_NUGGET) && !org.bukkit.craftbukkit.event.CraftEventFactory.callEntityPickupItemEvent(piglin, itemEntity, 0, false).isCancelled()) {
+ // Paper start - EntityPickupItemEvent fixes; fix event firing twice
+ if (itemEntity.getItem().is(Items.GOLD_NUGGET)/* && !org.bukkit.craftbukkit.event.CraftEventFactory.callEntityPickupItemEvent(piglin, itemEntity, 0, false).isCancelled()*/) { // Paper
+ if (!org.bukkit.craftbukkit.event.CraftEventFactory.callEntityPickupItemEvent(piglin, itemEntity, 0, false).isCancelled()) return;
+ piglin.onItemPickup(itemEntity); // Paper - moved from Piglin#pickUpItem - call prior to item entity modification
+ // Paper end
piglin.take(itemEntity, itemEntity.getItem().getCount());
itemstack = itemEntity.getItem();
itemEntity.discard(EntityRemoveEvent.Cause.PICKUP); // CraftBukkit - add Bukkit remove cause
} else if (!org.bukkit.craftbukkit.event.CraftEventFactory.callEntityPickupItemEvent(piglin, itemEntity, itemEntity.getItem().getCount() - 1, false).isCancelled()) {
+ piglin.onItemPickup(itemEntity); // Paper - EntityPickupItemEvent fixes; moved from Piglin#pickUpItem - call prior to item entity modification
piglin.take(itemEntity, 1);
itemstack = PiglinAi.removeOneItemFromItemEntity(itemEntity);
} else {
@@ -263,7 +268,7 @@ public class PiglinAi {
} else if (PiglinAi.isFood(itemstack) && !PiglinAi.hasEatenRecently(piglin)) {
PiglinAi.eat(piglin);
} else {
- boolean flag = !piglin.equipItemIfPossible(world, itemstack, itemEntity).equals(ItemStack.EMPTY); // CraftBukkit
+ boolean flag = !piglin.equipItemIfPossible(world, itemstack, null).equals(ItemStack.EMPTY); // CraftBukkit // Paper - pass null item entity to prevent duplicate pickup item event call - called above.
if (!flag) {
PiglinAi.putInInventory(piglin, itemstack);
diff --git a/src/main/java/net/minecraft/world/entity/raid/Raider.java b/src/main/java/net/minecraft/world/entity/raid/Raider.java
index 45375ccdcf730732dd915304dea2f523807eedd6..ab132041982df2a701e4baea8195873f31b4a5fb 100644
--- a/src/main/java/net/minecraft/world/entity/raid/Raider.java
+++ b/src/main/java/net/minecraft/world/entity/raid/Raider.java
@@ -228,6 +228,11 @@ public abstract class Raider extends PatrollingMonster {
boolean flag = this.hasActiveRaid() && this.getCurrentRaid().getLeader(this.getWave()) != null;
if (this.hasActiveRaid() && !flag && ItemStack.matches(itemstack, Raid.getOminousBannerInstance(this.registryAccess().lookupOrThrow(Registries.BANNER_PATTERN)))) {
+ // Paper start - EntityPickupItemEvent fixes
+ if (org.bukkit.craftbukkit.event.CraftEventFactory.callEntityPickupItemEvent(this, itemEntity, 0, false).isCancelled()) {
+ return;
+ }
+ // Paper end - EntityPickupItemEvent fixes
EquipmentSlot enumitemslot = EquipmentSlot.HEAD;
ItemStack itemstack1 = this.getItemBySlot(enumitemslot);
double d0 = (double) this.getEquipmentDropChance(enumitemslot);