papermc/Spigot-Server-Patches/0134-Prevent-Pathfinding-out-of-World-Border.patch
Spottedleaf 5c7081fecc Update upstream & fix some chunk related issues (#2177)
* Updated Upstream (Bukkit/CraftBukkit)

Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
45690fe9 SPIGOT-5047: Correct slot types for 1.14 inventories

CraftBukkit Changes:
4090d01f SPIGOT-5047: Correct slot types for 1.14 inventories
e8c08362 SPIGOT-5046: World#getLoadedChunks returning inaccessible cached chunks.
d445af3b SPIGOT-5067: Add item meta for 1.14 spawn eggs

* Bring Chunk load checks in-line with spigot

As of the last upstream merge spigot now checks ticket level status
when returning loaded chunks for a world from api. Now our checks
will respect that decision.

* Fix spawn ticket levels

Vanilla would keep the inner chunks of spawn available for ticking,
however my changes made all chunks non-ticking. Resolve by changing
ticket levels for spawn chunks inside the border to respect this
behavior.


* Make World#getChunkIfLoadedImmediately return only entity ticking chunks

Mojang appears to be using chunks with level > 33 (non-ticking chunks)
as cached chunks and not actually loaded chunks.

* Bring all loaded checks in line with spigot

Loaded chunks must be at least border  chunks, or level <= 33
2019-06-14 03:27:40 +01:00

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Diff

From 6bd0cb7d5c929286f4fde9332bd37fff86afa1b2 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 19 Dec 2016 23:07:42 -0500
Subject: [PATCH] Prevent Pathfinding out of World Border
This prevents Entities from trying to run outside of the World Border
diff --git a/src/main/java/net/minecraft/server/NavigationAbstract.java b/src/main/java/net/minecraft/server/NavigationAbstract.java
index ed69eaa176..a473c03b9d 100644
--- a/src/main/java/net/minecraft/server/NavigationAbstract.java
+++ b/src/main/java/net/minecraft/server/NavigationAbstract.java
@@ -95,6 +95,7 @@ public abstract class NavigationAbstract {
@Nullable
protected PathEntity a(BlockPosition blockposition, double d0, double d1, double d2, int i, boolean flag) { return this.a(blockposition, null, d0, d1, d2, i, flag); }
@Nullable protected PathEntity a(BlockPosition blockposition, Entity target, double d0, double d1, double d2, int i, boolean flag) {
+ if (!getEntity().getWorld().getWorldBorder().isInBounds(blockposition)) return null; // Paper - don't path out of world border
if (this.a.locY < 0.0D) {
return null;
} else if (!this.a()) {
--
2.21.0