From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Paul Sauve <paul@technove.co>
Date: Thu, 4 Feb 2021 23:33:52 -0600
Subject: [PATCH] Reduce chunk loading & lookups

Airplane
Copyright (C) 2020 Technove LLC

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diff --git a/src/main/java/net/minecraft/world/entity/monster/EnderMan.java b/src/main/java/net/minecraft/world/entity/monster/EnderMan.java
index b0a97679157a18a3c623ce3b2ae315789772c254..9fc3db543a0c9df502df5fb85012c6aa590e887d 100644
--- a/src/main/java/net/minecraft/world/entity/monster/EnderMan.java
+++ b/src/main/java/net/minecraft/world/entity/monster/EnderMan.java
@@ -333,11 +333,17 @@ public class EnderMan extends Monster implements NeutralMob {
     private boolean teleport(double x, double y, double z) {
         BlockPos.MutableBlockPos blockposition_mutableblockposition = new BlockPos.MutableBlockPos(x, y, z);
 
-        while (blockposition_mutableblockposition.getY() > this.level().getMinBuildHeight() && !this.level().getBlockState(blockposition_mutableblockposition).blocksMotion()) {
+        // Pufferfish start - single chunk lookup
+        net.minecraft.world.level.chunk.LevelChunk chunk = this.level().getChunkIfLoaded(blockposition_mutableblockposition);
+        if (chunk == null) {
+            return false;
+        }
+        // Pufferfish end
+        while (blockposition_mutableblockposition.getY() > this.level().getMinBuildHeight() && !chunk.getBlockState(blockposition_mutableblockposition).blocksMotion()) { // Pufferfish
             blockposition_mutableblockposition.move(Direction.DOWN);
         }
 
-        BlockState iblockdata = this.level().getBlockState(blockposition_mutableblockposition);
+        BlockState iblockdata = chunk.getBlockState(blockposition_mutableblockposition); // Pufferfish
         boolean flag = iblockdata.blocksMotion();
         boolean flag1 = iblockdata.getFluidState().is(FluidTags.WATER);