Paper/Spigot-Server-Patches/0021-Remove-invalid-mob-spawner-tile-entities.patch

From 5dd5701010a85eee8f0fc1e934e55ef4277c881b Mon Sep 17 00:00:00 2001
From: Byteflux <byte@byteflux.net>
Date: Tue, 1 Mar 2016 15:08:03 -0600
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 f3d845d..2488902 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -720,6 +720,10 @@ public class Chunk {
             tileentity.z();
             this.tileEntities.put(blockposition, tileentity);
             // CraftBukkit start
+            // Paper start - Remove invalid mob spawner tile entities
+        } else if (tileentity instanceof TileEntityMobSpawner && org.bukkit.craftbukkit.util.CraftMagicNumbers.getMaterial(getBlockData(blockposition).getBlock()) != org.bukkit.Material.MOB_SPAWNER) {
+            this.tileEntities.remove(blockposition);
+            // Paper end
         } else {
             System.out.println("Attempted to place a tile entity (" + tileentity + ") at " + tileentity.position.getX() + "," + tileentity.position.getY() + "," + tileentity.position.getZ()
                 + " (" + org.bukkit.craftbukkit.util.CraftMagicNumbers.getMaterial(getBlockData(blockposition).getBlock()) + ") where there was no entity tile!");
-- 
2.8.3