void CheckWinState()
    {
        gameItems = GameObject.FindGameObjectsWithTag("PickUp");

        //If all pick up items are inactive, change the scene
        if (gameItems.Length == 0)
        {
            //Save game data
            saveData.setSceneIndex(4);
            SaveSystem.instance.SaveGame(saveData);
            //Load next level
            LocalData.NextSceneLoader(4);
        }
    }//end of CheckWinState