Remove last bit of chunk exists region file fix

CraftBukkit removed their implementation that caused this issue,
switching to Mojang's implementation which doesn't appear to share it. I
already removed the important bit in the last upstream merge, this is
just unused and unnecessary now. So we remove it.

1 files changed, 43 insertions, 0 deletions

diff --git a/Spigot-Server-Patches/0180-Prevent-Pathfinding-out-of-World-Border.patch b/Spigot-Server-Patches/0180-Prevent-Pathfinding-out-of-World-Border.patch
new file mode 100644
index 0000000000..4667ab0441
--- /dev/null
+++ b/Spigot-Server-Patches/0180-Prevent-Pathfinding-out-of-World-Border.patch
@@ -0,0 +1,43 @@
+From 7292ba902909ac5284a165b4fc2c422bf503486a Mon Sep 17 00:00:00 2001
+From: Aikar <[email protected]>
+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 c0ef2400b..74d1fd6b2 100644
+--- a/src/main/java/net/minecraft/server/NavigationAbstract.java
++++ b/src/main/java/net/minecraft/server/NavigationAbstract.java
+@@ -69,6 +69,7 @@ public abstract class NavigationAbstract {
+ 
+     @Nullable
+     public PathEntity a(BlockPosition blockposition) {
++        if (!getEntity().getWorld().getWorldBorder().isInBounds(blockposition)) return null; // Paper - don't path out of world border
+         if (!this.b()) {
+             return null;
+         } else if (this.c != null && !this.c.b() && blockposition.equals(this.q)) {
+@@ -95,6 +96,7 @@ public abstract class NavigationAbstract {
+             return null;
+         } else {
+             BlockPosition blockposition = new BlockPosition(entity);
++            if (!getEntity().getWorld().getWorldBorder().isInBounds(blockposition)) return null; // Paper - don't path out of world border
+ 
+             if (this.c != null && !this.c.b() && blockposition.equals(this.q)) {
+                 return this.c;
+diff --git a/src/main/java/net/minecraft/server/WorldBorder.java b/src/main/java/net/minecraft/server/WorldBorder.java
+index 9038d52eb..632eb1c9d 100644
+--- a/src/main/java/net/minecraft/server/WorldBorder.java
++++ b/src/main/java/net/minecraft/server/WorldBorder.java
+@@ -29,7 +29,7 @@ public class WorldBorder {
+         this.l = 5;
+     }
+ 
+-    public boolean a(BlockPosition blockposition) {
++    public boolean isInBounds(BlockPosition blockposition) { return a(blockposition); }public boolean a(BlockPosition blockposition) { // Paper - OBFHELPER
+         return (double) (blockposition.getX() + 1) > this.b() && (double) blockposition.getX() < this.d() && (double) (blockposition.getZ() + 1) > this.c() && (double) blockposition.getZ() < this.e();
+     }
+ 
+-- 
+2.12.2.windows.2
+