Core/Arenas/Dalaran Sewers: Knockback players near the central waterfall when it fully activates.

src/server/game/Battlegrounds/Zones/BattlegroundDS.cpp

@@ -73,8 +73,11 @@ void BattlegroundDS::PostUpdateImpl(uint32 diff)
             setWaterFallTimer(BG_DS_WATERFALL_WARNING_DURATION);
             setWaterFallStatus(BG_DS_WATERFALL_STATUS_WARNING);
         }
-        else if (getWaterFallStatus() == BG_DS_WATERFALL_STATUS_WARNING) // Active collision
+        else if (getWaterFallStatus() == BG_DS_WATERFALL_STATUS_WARNING) // Active collision and perform knockback
         {
+            if (Creature* waterSpout = GetBgMap()->GetCreature(BgCreatures[BG_DS_NPC_WATERFALL_KNOCKBACK]))
+                waterSpout->CastSpell(waterSpout, BG_DS_SPELL_WATER_SPOUT, true);
+
             if (GameObject* gob = GetBgMap()->GetGameObject(BgObjects[BG_DS_OBJECT_WATER_1]))
                 gob->SetGoState(GO_STATE_READY);
 

src/server/game/Battlegrounds/Zones/BattlegroundDS.h

@@ -59,6 +59,7 @@ enum BattlegroundDSSpells
 {
     BG_DS_SPELL_FLUSH             = 57405, // Visual and target selector for the starting knockback from the pipe
     BG_DS_SPELL_FLUSH_KNOCKBACK   = 61698, // Knockback effect for previous spell (triggered, not need to be casted)
+    BG_DS_SPELL_WATER_SPOUT       = 58873, // Knockback effect of the central waterfall
 };
 
 enum BattlegroundDSData