From 449f4ed9e6999fef7cb2a95bbde1eaba7894e946 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Fri, 2 Dec 2016 00:11:43 -0500
Subject: [PATCH] Optimize World.isLoaded(BlockPosition)Z

Reduce method invocations for World.isLoaded(BlockPosition)Z

diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 3b2de1f31..0ba99bcbc 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -273,6 +273,10 @@ public abstract class World implements GeneratorAccess, IIBlockAccess, AutoClose
         return this.getType(blockposition).isAir();
     }
 
+    public boolean isLoaded(BlockPosition blockposition) {
+        return getChunkIfLoaded(blockposition.getX() >> 4, blockposition.getZ() >> 4) != null; // Paper
+    }
+
     // Paper start
     public Chunk getChunkIfLoaded(BlockPosition blockposition) {
         return ((ChunkProviderServer) this.chunkProvider).getChunkIfLoaded(blockposition.getX() >> 4, blockposition.getZ() >> 4);
-- 
2.18.0