feat(NpcBots/bot_ai): Changed ranged bots to run to a tank or to thei…

…r master when they have aggro

src/server/game/AI/NpcBots/bot_ai.cpp

@@ -5430,7 +5430,24 @@ void bot_ai::CalculateAttackPos(Unit* target, Position& pos, bool& force) const
         force = true;
         return;
     }
+
+    // Ranged bots that are being targeted should move towards a tank bot or towards the player
+    if (!IsTank(me) && HasRole(BOT_ROLE_RANGED) && target->GetVictim() == me)
+    {
+        // By default go to the master
+        Unit* moveTarget = master;
+
+        // Look for a tank in the master's bots
+        BotMap const* map = master->GetBotMgr()->GetBotMap();
+        for (BotMap::const_iterator itr = map->begin(); itr != map->end(); ++itr)
+            if (itr->second && (IsTank(itr->second) || IsOffTank(itr->second)))
+                moveTarget = itr->second;
 
+        pos.Relocate(moveTarget);
+        force = true;
+        return;
+    }
+
     pos.Relocate(ppos);
     if (!me->IsWithinLOSInMap(target, VMAP::ModelIgnoreFlags::M2, LINEOFSIGHT_ALL_CHECKS))
         force = true;