From 4eb5ed272f0c3ea509cda274c360d70e368864a1 Mon Sep 17 00:00:00 2001
From: CraftBukkit/Spigot <noreply+git-craftbukkit@papermc.io>
Date: Mon, 3 Feb 2020 09:42:48 +1100
Subject: [PATCH] SPIGOT-5558: Fix World#getHighestBlockAt, previously off by
 +1

By: ysl3000 <yannicklamprecht@live.de>
---
 .../src/main/java/org/bukkit/craftbukkit/CraftWorld.java   | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/paper-server/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/paper-server/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index 326835cf2..1458b0a63 100644
--- a/paper-server/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/paper-server/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -291,11 +291,8 @@ public class CraftWorld implements World {
 
     @Override
     public int getHighestBlockYAt(int x, int z) {
-        if (!isChunkLoaded(x >> 4, z >> 4)) {
-            getChunkAt(x >> 4, z >> 4); // Transient load for this tick
-        }
-
-        return world.getHighestBlockYAt(HeightMap.Type.MOTION_BLOCKING, new BlockPosition(x, 0, z)).getY();
+        // Transient load for this tick
+        return world.getChunkAt(x >> 4, z >> 4).a(HeightMap.Type.MOTION_BLOCKING, x, z);
     }
 
     @Override