From a4e04803a51a04f1963738c2c8b147ad162daed0 Mon Sep 17 00:00:00 2001
From: Jedediah Smith <jedediah@silencegreys.com>
Date: Sat, 2 Apr 2016 05:09:16 -0400
Subject: [PATCH] Add PlayerUseUnknownEntityEvent


diff --git a/src/main/java/net/minecraft/server/PacketPlayInUseEntity.java b/src/main/java/net/minecraft/server/PacketPlayInUseEntity.java
index a4b98c81f5..53d38ea40f 100644
--- a/src/main/java/net/minecraft/server/PacketPlayInUseEntity.java
+++ b/src/main/java/net/minecraft/server/PacketPlayInUseEntity.java
@@ -4,7 +4,7 @@ import java.io.IOException;
 import javax.annotation.Nullable;
 
 public class PacketPlayInUseEntity implements Packet<PacketListenerPlayIn> {
-    private int a;
+    private int a; public int getEntityId() { return this.a; } // Paper - add accessor
     private PacketPlayInUseEntity.EnumEntityUseAction action;
     private Vec3D c;
     private EnumHand d;
diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
index 62f35d2672..306ef5bf79 100644
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
@@ -1903,6 +1903,16 @@ public class PlayerConnection implements PacketListenerPlayIn, ITickable {
                 }
             }
         }
+        // Paper start - fire event
+        else {
+            this.server.getPluginManager().callEvent(new com.destroystokyo.paper.event.player.PlayerUseUnknownEntityEvent(
+                this.getPlayer(),
+                packetplayinuseentity.getEntityId(),
+                packetplayinuseentity.b() == PacketPlayInUseEntity.EnumEntityUseAction.ATTACK,
+                packetplayinuseentity.c() == EnumHand.MAIN_HAND ? EquipmentSlot.HAND : EquipmentSlot.OFF_HAND
+            ));
+        }
+        // Paper end
 
     }
 
-- 
2.18.0