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89d51d5f29
Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable. It should be noted that this decision does not promise all future exploits will be configurable.
41 lines
2.0 KiB
Diff
41 lines
2.0 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Jake Potrebic <jake.m.potrebic@gmail.com>
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Date: Sat, 19 Feb 2022 19:05:59 -0800
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Subject: [PATCH] Fix cancelling ProjectileHitEvent for piercing arrows
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Piercing arrows search for multiple entities inside a while
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loop that is checking the projectile entity's removed state.
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If the hit event is cancelled on the first entity, the event will
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be called over and over again inside that while loop until the event
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is not cancelled. The solution here, is to make use of an
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already-existing field on AbstractArrow for tracking entities hit by
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piercing arrows to avoid duplicate damage being applied.
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== AT ==
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protected net.minecraft.world.entity.projectile.Projectile hitCancelled
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diff --git a/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java b/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
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index b3972c0aececb1d7170a47bbe8f1d6ce02d11331..c30f19162e33dbe8f018b7dc66210681b6027389 100644
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--- a/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
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+++ b/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
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@@ -298,6 +298,19 @@ public abstract class AbstractArrow extends Projectile {
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}
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}
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+ // Paper start - Fix cancelling ProjectileHitEvent for piercing arrows
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+ @Override
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+ public void preOnHit(HitResult hitResult) {
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+ super.preOnHit(hitResult);
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+ if (hitResult instanceof EntityHitResult entityHitResult && this.hitCancelled && this.getPierceLevel() > 0) {
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+ if (this.piercingIgnoreEntityIds == null) {
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+ this.piercingIgnoreEntityIds = new IntOpenHashSet(5);
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+ }
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+ this.piercingIgnoreEntityIds.add(entityHitResult.getEntity().getId());
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+ }
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+ }
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+ // Paper end - Fix cancelling ProjectileHitEvent for piercing arrows
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+
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private boolean shouldFall() {
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return this.inGround && this.level().noCollision((new AABB(this.position(), this.position())).inflate(0.06D));
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}
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