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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 13c93281f6b81e88f2f54befb8e6a3e4bdabf53d..30f4f1254fc295442d72d50479e8af635f2fe983 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -2096,7 +2096,7 @@ 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
}
@Override
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