From 472f5901899fc334ed88346b609ff90fe27c746b Mon Sep 17 00:00:00 2001
From: CraftBukkit/Spigot <noreply+git-craftbukkit@papermc.io>
Date: Sun, 13 Jun 2021 08:27:57 +1000
Subject: [PATCH] Add additional validation to Player#breakBlock

By: md_5 <git@md-5.net>
---
 .../main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java   | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 947075b50e..2831c4c73e 100644
--- a/paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -536,6 +536,9 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
 
     @Override
     public boolean breakBlock(Block block) {
+        Preconditions.checkArgument(block != null, "Block cannot be null");
+        Preconditions.checkArgument(block.getWorld().equals(getWorld()), "Cannot break blocks across worlds");
+
         return getHandle().gameMode.breakBlock(new BlockPosition(block.getX(), block.getY(), block.getZ()));
     }