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Paper-Old/patches/server/0196-Fix-CraftEntity-hashCode.patch
Jake Potrebic 526795bacd
Update patches to handle vineflower decompiler (#10406)
* Update patches to handle vineflower decompiler

* update patches again to handle inlined simple lambdas

* update vf again and re-apply/rebuild patches

* update patches after removal of verify-merges flag

* fix compile issue

* remove maven local

* fix some issues

* address more issues

* fix collision patch

* use paperweight release

* more fixes

* update fineflower and fix patches again

* add missing comment descriptor

---------

Co-authored-by: Jason Penilla <11360596+jpenilla@users.noreply.github.com>
2024-04-12 12:14:06 -07:00

47 Zeilen
1.9 KiB
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 10 Jun 2018 20:20:15 -0400
Subject: [PATCH] Fix CraftEntity hashCode
hashCodes are not allowed to change, however bukkit used a value
that does change, the entityId.
When an entity is teleported dimensions, the entity reference is
replaced with a new one with a new entity ID.
For hashCode, we can simply use the UUID's hashCode to keep
the hashCode from changing.
equals() is ok to use getEntityId() because equals() should only
be true if both the left and right are the same reference.
Since entity ids can not duplicate during runtime, this
check is essentially the same as this.getHandle() == other.getHandle()
However, replaced it too to make it clearer of intent.
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
index 4808c62d3d951b201061659c91d1001e4b9b49ef..6fddbcec673564ac531a852f631f6acc460accbd 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
@@ -500,14 +500,15 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
return false;
}
final CraftEntity other = (CraftEntity) obj;
- return (this.getEntityId() == other.getEntityId());
+ return (this.getHandle() == other.getHandle()); // Paper - while logically the same, this is clearer
}
+ // Paper - Fix hashCode. entity ID's are not static.
+ // A CraftEntity can change reference to a new entity with a new ID, and hash codes should never change
@Override
public int hashCode() {
- int hash = 7;
- hash = 29 * hash + this.getEntityId();
- return hash;
+ return getUniqueId().hashCode();
+ // Paper end
}
@Override