void BattlegroundDS::PostUpdateImpl(uint32 diff)
{
    if (getWaterFallTimer() < diff)
    {
        if (isWaterFallActive())
        {
            setWaterFallTimer(urand(BG_DS_WATERFALL_TIMER_MIN, BG_DS_WATERFALL_TIMER_MAX));
            if (GameObject* obj = GetBGObject(BG_DS_OBJECT_WATER_1))
                obj->SetGoState(GO_STATE_READY);
            if (GameObject* obj = GetBGObject(BG_DS_OBJECT_WATER_2))
                obj->SetGoState(GO_STATE_READY);
            setWaterFallActive(false);
        }
        else
        {
            setWaterFallTimer(BG_DS_WATERFALL_DURATION);
            if (GameObject* obj = GetBGObject(BG_DS_OBJECT_WATER_1))
                obj->SetGoState(GO_STATE_ACTIVE);
            if (GameObject* obj = GetBGObject(BG_DS_OBJECT_WATER_2))
                obj->SetGoState(GO_STATE_ACTIVE);
            setWaterFallActive(true);
        }
    }
    else
        setWaterFallTimer(getWaterFallTimer() - diff);
}