Paper/nms-patches/ContainerBeacon.patch

--- a/net/minecraft/server/ContainerBeacon.java
+++ b/net/minecraft/server/ContainerBeacon.java
@@ -1,11 +1,17 @@
 package net.minecraft.server;
 
+import org.bukkit.craftbukkit.inventory.CraftInventoryView; // CraftBukkit
+
 public class ContainerBeacon extends Container {
 
     private final IInventory beacon;
     private final ContainerBeacon.SlotBeacon d;
     private final ContainerAccess containerAccess;
     private final IContainerProperties containerProperties;
+    // CraftBukkit start
+    private CraftInventoryView bukkitEntity = null;
+    private PlayerInventory player;
+    // CraftBukkit end
 
     public ContainerBeacon(int i, IInventory iinventory) {
         this(i, iinventory, new ContainerProperties(3), ContainerAccess.a);
@@ -13,6 +19,7 @@
 
     public ContainerBeacon(int i, IInventory iinventory, IContainerProperties icontainerproperties, ContainerAccess containeraccess) {
         super(Containers.BEACON, i);
+        player = (PlayerInventory) iinventory; // CraftBukkit - TODO: check this
         this.beacon = new InventorySubcontainer(1) {
             @Override
             public boolean b(int j, ItemStack itemstack) {
@@ -62,6 +69,7 @@
 
     @Override
     public boolean canUse(EntityHuman entityhuman) {
+        if (!this.checkReachable) return true; // CraftBukkit
         return a(this.containerAccess, entityhuman, Blocks.BEACON);
     }
 
@@ -145,4 +153,17 @@
             return 1;
         }
     }
+
+    // CraftBukkit start
+    @Override
+    public CraftInventoryView getBukkitView() {
+        if (bukkitEntity != null) {
+            return bukkitEntity;
+        }
+
+        org.bukkit.craftbukkit.inventory.CraftInventory inventory = new org.bukkit.craftbukkit.inventory.CraftInventoryBeacon(this.beacon);
+        bukkitEntity = new CraftInventoryView(this.player.player.getBukkitEntity(), inventory, this);
+        return bukkitEntity;
+    }
+    // CraftBukkit end
 }