From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Wed, 24 Jun 2020 15:14:51 -0600
Subject: [PATCH] Added firing of PlayerChangeBeaconEffectEvent


diff --git a/src/main/java/net/minecraft/world/inventory/BeaconMenu.java b/src/main/java/net/minecraft/world/inventory/BeaconMenu.java
index 063998751c21b4f75cf3bfff6c51c4e8c42bd5f3..a515898e718effe92c91fd0ac45fbb70ddb5d626 100644
--- a/src/main/java/net/minecraft/world/inventory/BeaconMenu.java
+++ b/src/main/java/net/minecraft/world/inventory/BeaconMenu.java
@@ -160,10 +160,16 @@ public class BeaconMenu extends AbstractContainerMenu {
 
     public void updateEffects(int primaryEffectId, int secondaryEffectId) {
         if (this.paymentSlot.hasItem()) {
-            this.beaconData.set(1, primaryEffectId);
-            this.beaconData.set(2, secondaryEffectId);
+            // Paper start
+            io.papermc.paper.event.player.PlayerChangeBeaconEffectEvent event = new io.papermc.paper.event.player.PlayerChangeBeaconEffectEvent((org.bukkit.entity.Player) this.player.player.getBukkitEntity(), org.bukkit.potion.PotionEffectType.getById(primaryEffectId), org.bukkit.potion.PotionEffectType.getById(secondaryEffectId), this.access.getLocation().getBlock());
+            if (event.callEvent()) {
+                this.beaconData.set(1, event.getPrimary() == null ? 0 : event.getPrimary().getId());
+                this.beaconData.set(2, event.getSecondary() == null ? 0 : event.getSecondary().getId());
+                if (!event.willConsumeItem()) return;
             this.paymentSlot.remove(1);
             this.access.execute(Level::blockEntityChanged);
+            }
+            // Paper end
         }
 
     }
