From 416a5d8363e7e87d07ceff5d97e61f547e87cf86 Mon Sep 17 00:00:00 2001
From: md_5 <md_5@live.com.au>
Date: Fri, 28 Jun 2013 19:52:54 +1000
Subject: [PATCH] Disallow Interaction With Self


diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
index 9ff5828..8d6d3c7 100644
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
@@ -1227,6 +1227,13 @@ public class PlayerConnection implements PacketListenerPlayIn, IUpdatePlayerList
         PlayerConnectionUtils.ensureMainThread(packetplayinuseentity, this, this.player.u());
         WorldServer worldserver = this.minecraftServer.getWorldServer(this.player.dimension);
         Entity entity = packetplayinuseentity.a((World) worldserver);
+        // Spigot Start
+        if ( entity == player && !player.isSpectator() )
+        {
+            disconnect( "Cannot interact with self!" );
+            return;
+        }
+        // Spigot End
 
         this.player.resetIdleTimer();
         if (entity != null) {
-- 
2.1.4