void Start()
        {
            var totallength = Set1.Length + Set2.Length + Set3.Length + Set4.Length;

            allSets = new Sprite[totallength];
            Set1.CopyTo(allSets, 0);
            Set2.CopyTo(allSets, Set1.Length);
            Set3.CopyTo(allSets, Set1.Length + Set2.Length);
            Set4.CopyTo(allSets, Set1.Length + Set2.Length + Set3.Length);
        }