From 0f76d43f8e0cbc05de1ce798a23f2f36d040d338 Mon Sep 17 00:00:00 2001
From: Alfie Cleveland <alfeh@me.com>
Date: Fri, 21 Jul 2017 00:38:12 +0100
Subject: [PATCH] Prohibit excessive teleports


diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 624ec598d..0d66e7e1b 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -580,6 +580,15 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
             return false;
         }
 
+        // MineHQ start - don't allow excessive teleports
+        int locationChunkX = location.getBlockX() >> 4;
+        int locationChunkZ = location.getBlockZ() >> 4;
+
+        if (46340 <= Math.abs(locationChunkX) || 46340 <= Math.abs(locationChunkZ)) {
+            throw new IllegalArgumentException("Invalid teleportation destination for " + this.getName() + "! Offending location: " + location.toString());
+        }
+        // MineHQ end
+
         // From = Players current Location
         Location from = this.getLocation();
         // To = Players new Location if Teleport is Successful
-- 
2.13.3