From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: BillyGalbreath <Blake.Galbreath@GMail.com>
Date: Fri, 19 Jan 2018 08:15:29 -0600
Subject: [PATCH] PlayerAdvancementCriterionGrantEvent


diff --git a/src/main/java/net/minecraft/server/AdvancementDataPlayer.java b/src/main/java/net/minecraft/server/AdvancementDataPlayer.java
index 12fc641299342a317177cf0ab876186fb8a2b760..57b9d13447a4f7804827c1bd41121c3069c696bd 100644
--- a/src/main/java/net/minecraft/server/AdvancementDataPlayer.java
+++ b/src/main/java/net/minecraft/server/AdvancementDataPlayer.java
@@ -279,6 +279,12 @@ public class AdvancementDataPlayer {
         boolean flag1 = advancementprogress.isDone();
 
         if (advancementprogress.a(s)) {
+            // Paper start
+            if (!new com.destroystokyo.paper.event.player.PlayerAdvancementCriterionGrantEvent(this.player.getBukkitEntity(), advancement.bukkit, s).callEvent()) {
+                advancementprogress.b(s);
+                return false;
+            }
+            // Paper end
             this.d(advancement);
             this.j.add(advancement);
             flag = true;