From 0c4d3daad8180e670e800360fe2f25d15f79b544 Mon Sep 17 00:00:00 2001
From: Byteflux <byte@byteflux.net>
Date: Tue, 19 Aug 2014 14:51:28 -0500
Subject: [PATCH] Remove invalid mob spawner tile entities


diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
index 0423ee9..9454d4f 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -755,6 +755,11 @@ public class Chunk {
                 this.world.triggerHoppersList.add(tileentity);
             }
             // Spigot end
+            // PaperSpigot start - Remove invalid mob spawner Tile Entities
+        } else if (this.world.paperSpigotConfig.removeInvalidMobSpawnerTEs && tileentity instanceof TileEntityMobSpawner &&
+                org.bukkit.craftbukkit.util.CraftMagicNumbers.getMaterial(getType(i, j, k)) != org.bukkit.Material.MOB_SPAWNER) {
+            this.tileEntities.remove(chunkposition);
+            // PaperSpigot end
             // CraftBukkit start
         } else {
             System.out.println("Attempted to place a tile entity (" + tileentity + ") at " + tileentity.x + "," + tileentity.y + "," + tileentity.z
diff --git a/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java b/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java
index ce3fb73..753bdda 100644
--- a/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java
+++ b/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java
@@ -171,4 +171,11 @@ public class PaperSpigotWorldConfig
         waterOverLavaFlowSpeed = getInt( "water-over-lava-flow-speed", 5 );
         log( "Water over lava flow speed: " + waterOverLavaFlowSpeed);
     }
+
+    public boolean removeInvalidMobSpawnerTEs;
+    private void removeInvalidMobSpawnerTEs()
+    {
+        removeInvalidMobSpawnerTEs = getBoolean( "remove-invalid-mob-spawner-tile-entities", true );
+        log( "Remove invalid mob spawner tile entities: " + removeInvalidMobSpawnerTEs );
+    }
 }
-- 
1.9.1