duck

public class Level
{

    private LevelTile[] level;
    private width;
    private height;

    public Level (width : int, height : int)
    {
        level = new LevelTile[width*height];
        this.width = width;
        this.height = height;
    }

    public LevelTile GetTile (x : int, y : int)
    {
        return level[x + y*height];
    }

    public void SetTile (x : int, y : int, LevelTile tile)
    {
        level[x + y*height] = tile;
    }
}