PaperMC/patches/server/0421-ExperienceOrbMergeEvent.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Tue, 19 Dec 2017 22:57:26 -0500
Subject: [PATCH] ExperienceOrbMergeEvent

Has to be reimplemented at one point maybe
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 d62b1f22ee5679b0f223320db0db9c53b2120c91..f49c636a7485a7f41aae7acb584dc1c7c1d2c3a2 100644
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
@@ -640,7 +640,7 @@ public class CraftEventFactory {
                     if (e instanceof net.minecraft.world.entity.ExperienceOrb) {
                         net.minecraft.world.entity.ExperienceOrb loopItem = (net.minecraft.world.entity.ExperienceOrb) e;
                         // Paper start
-                        if (!loopItem.isRemoved() && !(maxValue > 0 && loopItem.value >= maxValue)) {
+                        if (!loopItem.isRemoved() && !(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 - ExperienceOrbMergeEvent
                             long newTotal = (long)xp.value + (long)loopItem.value;
                             if ((int) newTotal < 0) continue; // Overflow
                             if (maxValue > 0 && newTotal > (long)maxValue) {