From 00b9c23e28dc19a3a9f45d1d5b86d203f55b2a7e Mon Sep 17 00:00:00 2001
From: Treeston <treeston.mmoc@gmail.com>
Date: Tue, 28 Aug 2018 16:16:37 +0200
Subject: Core/Entities: Fixed an issue where creatures would not properly
 assist formation members in certain scenarios. Tagging #21967.

(cherry picked from commit a001bc63b1182babddbb188f7c762c6168a98b5c)
---
 src/server/game/Combat/ThreatManager.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/server/game/Combat/ThreatManager.cpp')

diff --git a/src/server/game/Combat/ThreatManager.cpp b/src/server/game/Combat/ThreatManager.cpp
index 685a972599a..867a34c4c44 100644
--- a/src/server/game/Combat/ThreatManager.cpp
+++ b/src/server/game/Combat/ThreatManager.cpp
@@ -19,6 +19,7 @@
 #include "Creature.h"
 #include "CombatPackets.h"
 #include "CreatureAI.h"
+#include "CreatureGroups.h"
 #include "MotionMaster.h"
 #include "ObjectAccessor.h"
 #include "Player.h"
@@ -391,6 +392,8 @@ void ThreatManager::AddThreat(Unit* target, float amount, SpellInfo const* spell
         SaveCreatureHomePositionIfNeed(cOwner);
         if (CreatureAI* ownerAI = cOwner->AI())
             ownerAI->JustEngagedWith(target);
+        if (CreatureGroup* formation = cOwner->GetFormation())
+            formation->MemberEngagingTarget(cOwner, target);
     }
 }
 
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