From 7f19d7e7e7ded0f3a6287ce0587e62ad5bfeb544 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 c13a2be..f785d9f 100644
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
@@ -1397,6 +1397,13 @@ public class PlayerConnection implements PacketListenerPlayIn, ITickable {
         if (this.player.dead) return; // CraftBukkit
         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) {
-- 
2.5.0