/// <summary>
/// Assigns the given tile into the level at the specified
/// row and column. null can be used for the tile to clear
/// it out.
/// </summary>
/// <param name="tile"></param>
/// <param name="row"></param>
/// <param name="column"></param>
public void Put(AbstractTile tile, int row, int column)
{
grid[row, column] = tile;
}
/// <summary>
/// Adds a specific new tile to the level set for use in various
/// definitions.
/// </summary>
/// <param name="tile"></param>
public void AddTile(AbstractTile tile)
{
Tiles.Add(tile);
tile.Id = Tiles.Count - 1;
}