From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Sat, 9 Jan 2021 14:17:07 +0100
Subject: [PATCH] Remove stale POIs


diff --git a/src/main/java/net/minecraft/server/VillagePlace.java b/src/main/java/net/minecraft/server/VillagePlace.java
index b926cebd053bef829517c9d9bbf1c609c23ca04a..6a0f07b13eef5560dfc7c7b39618c0b825533aec 100644
--- a/src/main/java/net/minecraft/server/VillagePlace.java
+++ b/src/main/java/net/minecraft/server/VillagePlace.java
@@ -41,6 +41,7 @@ public class VillagePlace extends RegionFileSection<VillagePlaceSection> {
         ((VillagePlaceSection) this.e(SectionPosition.a(blockposition).s())).a(blockposition, villageplacetype);
     }
 
+    public void remove(BlockPosition blockposition) { this.a(blockposition); } // Paper - OBFHELPER
     public void a(BlockPosition blockposition) {
         ((VillagePlaceSection) this.e(SectionPosition.a(blockposition).s())).a(blockposition);
     }
@@ -125,6 +126,7 @@ public class VillagePlace extends RegionFileSection<VillagePlaceSection> {
         return ((VillagePlaceSection) this.e(SectionPosition.a(blockposition).s())).c(blockposition);
     }
 
+    public final boolean test(BlockPosition blockposition, Predicate<VillagePlaceType> predicate) { return this.a(blockposition, predicate); } // Paper - OBFHELPER
     public boolean a(BlockPosition blockposition, Predicate<VillagePlaceType> predicate) {
         return (Boolean) this.d(SectionPosition.a(blockposition).s()).map((villageplacesection) -> {
             return villageplacesection.a(blockposition, predicate);
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index 5b0b6edfa790918e56399ff6c83f3feb6e5aca49..b033ff44373ec87702946c3cefe664fb46d609f4 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -1942,6 +1942,13 @@ public class WorldServer extends World implements GeneratorAccessSeed {
         Optional<VillagePlaceType> optional = VillagePlaceType.b(iblockdata);
         Optional<VillagePlaceType> optional1 = VillagePlaceType.b(iblockdata1);
 
+        // Paper start
+        this.getMinecraftServer().execute(() -> {
+                if (!optional.isPresent() && this.getPoiStorage().test(blockposition, com.google.common.base.Predicates.alwaysTrue())) {
+                    this.getPoiStorage().remove(blockposition);
+                }
+        });
+        // Paper end
         if (!Objects.equals(optional, optional1)) {
             BlockPosition blockposition1 = blockposition.immutableCopy();
 
@@ -1960,6 +1967,7 @@ public class WorldServer extends World implements GeneratorAccessSeed {
         }
     }
 
+    public final VillagePlace getPoiStorage() { return this.y(); } // Paper - OBFHELPER
     public VillagePlace y() {
         return this.getChunkProvider().j();
     }