From f9ef3612f7d8a1ed53bf3eca16ce8883ab8af749 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

---
 .../pathfinder/WalkNodeEvaluator.java.patch      | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 paper-server/patches/sources/net/minecraft/world/level/pathfinder/WalkNodeEvaluator.java.patch

diff --git a/paper-server/patches/sources/net/minecraft/world/level/pathfinder/WalkNodeEvaluator.java.patch b/paper-server/patches/sources/net/minecraft/world/level/pathfinder/WalkNodeEvaluator.java.patch
new file mode 100644
index 000000000..96be98219
--- /dev/null
+++ b/paper-server/patches/sources/net/minecraft/world/level/pathfinder/WalkNodeEvaluator.java.patch
@@ -0,0 +1,16 @@
+--- a/net/minecraft/world/level/pathfinder/WalkNodeEvaluator.java
++++ b/net/minecraft/world/level/pathfinder/WalkNodeEvaluator.java
+@@ -478,7 +478,12 @@
+     }
+ 
+     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;