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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Newwind <support@newwindserver.com>
Date: Mon, 26 Aug 2024 14:01:37 +0200
Subject: [PATCH] Check dead flag in isAlive()
If a plugin sets the health of a living entity above 0 after it has already died, the entity will be "revived".
It will behave the exact same as before, except with the internal "dead" flag set, resulting in 2 behavior changes,
A: it's completely invulnerable to all damage
B: it's unable to pickup items
isValid() for these bugged entities will return true, isDead() will return false, despite the dead flag.
This patch checks that the mob isn't dead before saying its alive.
Also, even if the plugin is responsibly checking !isDead() before modifying health, on very rare circumstances
I am currently unable to replicate, these "revived" entities can still appear
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index cfef1bff0080ffc662e3a4428116f7d4dc71eab2..f2708479ccf994278ad1ab4665edc46672001e8a 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -2145,7 +2145,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
@Override
public boolean isAlive() {
- return !this.isRemoved() && this.getHealth() > 0.0F;
+ return !this.isRemoved() && this.getHealth() > 0.0F && !this.dead; // Paper - Check this.dead
}
public boolean isLookingAtMe(LivingEntity entity, double d0, boolean flag, boolean visualShape, Predicate<LivingEntity> predicate, DoubleSupplier... entityYChecks) {
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