PaperMC/patches/server/0086-Do-not-load-chunks-for-Pathfinding.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Thu, 31 Mar 2016 19:17:58 -0400
Subject: [PATCH] Do not load chunks for Pathfinding


diff --git a/src/main/java/net/minecraft/world/level/pathfinder/WalkNodeEvaluator.java b/src/main/java/net/minecraft/world/level/pathfinder/WalkNodeEvaluator.java
index 6a8f44600a426041e3974aa52bdec0cc35e26591..d5004290e40a1ff5e0fcfe75f8da34ae15962359 100644
--- a/src/main/java/net/minecraft/world/level/pathfinder/WalkNodeEvaluator.java
+++ b/src/main/java/net/minecraft/world/level/pathfinder/WalkNodeEvaluator.java
@@ -478,7 +478,12 @@ public class WalkNodeEvaluator extends NodeEvaluator {
     }
 
     protected static PathType getPathTypeFromState(BlockGetter world, BlockPos pos) {
-        BlockState blockState = world.getBlockState(pos);
+        // Paper start - Do not load chunks during pathfinding
+        BlockState blockState = world.getBlockStateIfLoaded(pos);
+        if (blockState == null) {
+            return PathType.BLOCKED;
+        }
+        // Paper end
         Block block = blockState.getBlock();
         if (blockState.isAir()) {
             return PathType.OPEN;