// function for checking if objects can be combined together
        public void CheckCombine(PickIntObj objA, PickIntObj objB)
        {
            if (objA != null)
            {
                objA.Click();
            }
            if (objB != null)
            {
                objB.Click();
            }
            InteractiveObject temp = null;

            for (int i = 0; i < relationList.Count; i++)
            {
                if (relationList [i].Key == objA)
                {
                    temp = relationList [i].Value;
                    break;
                }
            }
            for (int i = 0; i < relationList.Count; i++)
            {
                if (relationList [i].Value == temp && relationList [i].Key == objB)
                {
                    temp.Click();
                    return;
                }
            }
            objA.Choose();
            objB.Choose();
        }
        // function for checking if the condition(s) of an obj is fulfilled
        public void GetLink(InteractiveObject intObj, PickIntObj selectedIntObj)
        {
            if (intObj == null)
            {
                selectedIntObj.Choose();
                return;
            }
            if (selectedIntObj != null)
            {
                selectedIntObj.Click();
            }
            bool related = false;

            for (int i = 0; i < relationList.Count; i++)
            {
                if (relationList [i].Value == intObj)
                {
                    if (relationList [i].Key == selectedIntObj)
                    {
                        related = true;
                    }
                    if (!relationList[i].Key.IsSolved())
                    {
                        if (selectedIntObj != null)
                        {
                            selectedIntObj.Choose();
                        }
                        return;
                    }
                }
            }
            if (!related && selectedIntObj != null)
            {
                selectedIntObj.Choose();
                return;
            }
            intObj.Click();
        }