public void SelectTileAreaEntry(EditorTileAreaEntry tileAreaEntry)
    {
        if (SelectedTileAreaEntry != null)
        {
            if (SelectedTileAreaEntry == tileAreaEntry)
            {
                return;
            }
            else
            {
                SelectedTileAreaEntry.Deselect();
                SelectedTileAreaEntry = null;
            }
        }

        SelectedTileAreaEntry = tileAreaEntry;
        tileAreaEntry.Select();

        // show all tiles that are already part of this area with a blue overlay
        for (int i = 0; i < GameManager.Instance.CurrentEditorLevel.Tiles.Count; i++)
        {
            if (PersistentGameManager.CurrentSceneType == SceneType.Maze)
            {
                EditorMazeTile tile = GameManager.Instance.CurrentEditorLevel.Tiles[i] as EditorMazeTile;

                if (tile.GetTileArea(tileAreaEntry.TileArea) != null)
                {
                    tile.SetTileOverlayImage(TileOverlayMode.Blue);
                }
            }
        }
    }
    public void DeselectTileAreaEntry(EditorTileAreaEntry tileAreaEntry)
    {
        if (SelectedTileAreaEntry != null && SelectedTileAreaEntry == tileAreaEntry)
        {
            SelectedTileAreaEntry = null;
            tileAreaEntry.Deselect();

            for (int i = 0; i < GameManager.Instance.CurrentEditorLevel.Tiles.Count; i++)
            {
                if (PersistentGameManager.CurrentSceneType == SceneType.Maze)
                {
                    EditorMazeTile tile = GameManager.Instance.CurrentEditorLevel.Tiles[i] as EditorMazeTile;
                    tile.SetTileOverlayImage(TileOverlayMode.Empty);
                }
            }
        }
    }