PaperMC/patches/server/0795-Fix-inventories-returning-null-Locations.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Wed, 15 Mar 2023 18:29:45 -0700
Subject: [PATCH] Fix inventories returning null Locations

Wandering Trader, AbstractHorse, Beacon and Composter inventories returned null locations
when a block or entity location is readily available

Co-authored-by: Lukas Planz <lukas.planz@web.de>

diff --git a/src/main/java/net/minecraft/world/SimpleContainer.java b/src/main/java/net/minecraft/world/SimpleContainer.java
index 13a32ef8f86b678dcce83c41c78b47d9aab9f16b..b0963c534afe5be164701cb283f1849e32ae5a86 100644
--- a/src/main/java/net/minecraft/world/SimpleContainer.java
+++ b/src/main/java/net/minecraft/world/SimpleContainer.java
@@ -63,6 +63,16 @@ public class SimpleContainer implements Container, StackedContentsCompatible {
 
     @Override
     public Location getLocation() {
+        // Paper start - Fix inventories returning null Locations
+        // When the block inventory does not have a tile state that implements getLocation, e. g. composters
+        if (this.bukkitOwner instanceof org.bukkit.inventory.BlockInventoryHolder blockInventoryHolder) {
+            return blockInventoryHolder.getBlock().getLocation();
+        }
+        // When the bukkit owner is a bukkit entity, but does not implement Container itself, e. g. horses
+        if (this.bukkitOwner instanceof org.bukkit.entity.Entity entity) {
+            return entity.getLocation();
+        }
+        // Paper end - Fix inventories returning null Locations
         return null;
     }
 
diff --git a/src/main/java/net/minecraft/world/inventory/BeaconMenu.java b/src/main/java/net/minecraft/world/inventory/BeaconMenu.java
index 9db647cfbd3f9c884465cf3d3a1b911d46a3da58..c0dfa04511110be366ee5b0bd75efc51afcce2e4 100644
--- a/src/main/java/net/minecraft/world/inventory/BeaconMenu.java
+++ b/src/main/java/net/minecraft/world/inventory/BeaconMenu.java
@@ -52,6 +52,12 @@ public class BeaconMenu extends AbstractContainerMenu {
             public int getMaxStackSize() {
                 return 1;
             }
+            // Paper start - Fix inventories returning null Locations
+            @Override
+            public org.bukkit.Location getLocation() {
+                return context.getLocation();
+            }
+            // Paper end - Fix inventories returning null Locations
         };
         checkContainerDataCount(propertyDelegate, 3);
         this.beaconData = propertyDelegate;
diff --git a/src/main/java/net/minecraft/world/inventory/MerchantContainer.java b/src/main/java/net/minecraft/world/inventory/MerchantContainer.java
index 7cc96b62f6bacdb44a37d74db214bd0e11c4d503..9140fab07aab32065f7a3b5d13dd17d61dc6d646 100644
--- a/src/main/java/net/minecraft/world/inventory/MerchantContainer.java
+++ b/src/main/java/net/minecraft/world/inventory/MerchantContainer.java
@@ -65,7 +65,7 @@ public class MerchantContainer implements Container {
 
     @Override
     public Location getLocation() {
-        return (this.merchant instanceof Villager) ? ((Villager) this.merchant).getBukkitEntity().getLocation() : null;
+        return (this.merchant instanceof AbstractVillager) ? ((AbstractVillager) this.merchant).getBukkitEntity().getLocation() : null; // Paper - Fix inventories returning null Locations
     }
     // CraftBukkit end