Paper/Spigot-Server-Patches/0218-ExperienceOrbMergeEvent.patch

From 48181f892f95ba0aee460a1eee9a7f2a256cf3e3 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Tue, 19 Dec 2017 22:57:26 -0500
Subject: [PATCH] ExperienceOrbMergeEvent

Fired when the server is about to merge 2 experience orbs
Plugins can cancel this if they want to ensure experience orbs do not lose important
metadata such as spawn reason, or conditionally move data from source to target.

diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
index 2985c76f37..c02619bb57 100644
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
@@ -404,7 +404,7 @@ public class CraftEventFactory {
                     if (e instanceof EntityExperienceOrb) {
                         EntityExperienceOrb loopItem = (EntityExperienceOrb) e;
                         // Paper start
-                        if (!loopItem.dead && !(maxValue > 0 && loopItem.value >= maxValue)) {
+                        if (!loopItem.dead && !(maxValue > 0 && loopItem.value >= maxValue)  && new com.destroystokyo.paper.event.entity.ExperienceOrbMergeEvent((org.bukkit.entity.ExperienceOrb) entity.getBukkitEntity(), (org.bukkit.entity.ExperienceOrb) loopItem.getBukkitEntity()).callEvent()) { // Paper
                             long newTotal = (long)xp.value + (long)loopItem.value;
                             if ((int) newTotal < 0) continue; // Overflow
                             if (maxValue > 0 && newTotal > (long)maxValue) {
-- 
2.21.0