From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Patrick Hemmer <patrick.hemmer@gmail.com>
Date: Tue, 11 Aug 2020 22:11:53 +0300
Subject: [PATCH] Use block distance in portal search radius

Original author: Patrick Hemmer <patrick.hemmer@gmail.com>

Previously when searching for a portal, the server would use the search radius to determine which chunks it needs to search, and then would
consider any portal within those chunks as a match, even if it is outside the search radius.
This changes it so that the portal list is filtered to only include portals within the configured search radius (ignoring the Y coordinate).

Ported to Yatopia and added per world config option by MrIvanPlays <ivan@mrivanplays.com>

diff --git a/src/main/java/de/minebench/origami/OrigamiConfig.java b/src/main/java/de/minebench/origami/OrigamiConfig.java
index 284865f960672645932521ed811a7c5c31c64294..70e8655f0516fcdf0fce4151a4395bd52cd5eeaa 100644
--- a/src/main/java/de/minebench/origami/OrigamiConfig.java
+++ b/src/main/java/de/minebench/origami/OrigamiConfig.java
@@ -171,6 +171,11 @@ public final class OrigamiConfig {
                             && pillagerCollisions && ironGolemCollisions && miscCollisions && itemCollisions
                             && waterCreatureCollisions && waterAmbientCollisions;
         }
+
+        public boolean useBlockDistanceInPortalSearchRadius = false;
+        private void useBlockDistanceInPortalSearchRadius() {
+            useBlockDistanceInPortalSearchRadius = getBoolean("use-block-distance-in-portal-search-radius", false);
+        }
         // Yatopia end
     }
 
diff --git a/src/main/java/net/minecraft/server/PortalTravelAgent.java b/src/main/java/net/minecraft/server/PortalTravelAgent.java
index e09fd73d9bbb59323a30dabdbfd9f3e1b8413541..f2640522b34f72c2c53a3cd66818af82ad026f9f 100644
--- a/src/main/java/net/minecraft/server/PortalTravelAgent.java
+++ b/src/main/java/net/minecraft/server/PortalTravelAgent.java
@@ -31,12 +31,22 @@ public class PortalTravelAgent {
         boolean seen = false;
         VillagePlaceRecord best = null;
         java.util.List<VillagePlaceRecord> list = villageplace.b(type -> type == VillagePlaceType.v, blockposition, i, VillagePlace.Occupancy.ANY).collect(java.util.stream.Collectors.toList());
+        // Yatopia start - fix portal bug
+        if (world.origamiConfig.useBlockDistanceInPortalSearchRadius) {
+            list.removeIf(villagePlaceRecord -> {
+                BlockPosition portalPosition = villagePlaceRecord.getPosition();
+                return Math.abs(portalPosition.getX() - blockposition.getX()) > i
+                        || Math.abs(portalPosition.getZ() - blockposition.getZ()) > i;
+            });
+        }
+        if (!list.isEmpty()) {
         for (VillagePlaceRecord villagePlaceRecord : list) {
             if (!seen || comparator.compare(villagePlaceRecord, best) < 0) {
                 seen = true;
                 best = villagePlaceRecord;
             }
         }
+        } // Yatopia end
         Optional<VillagePlaceRecord> optional = seen ? Optional.of(best) : Optional.empty();
 
         return optional.map((villageplacerecord) -> {