/// <summary>
/// Based on a passed tile index, create a Tile by looking up which TileSet it belongs to, assign the proper TilSet texture,
/// and find the bounds of the rectangle that encompasses the correct tile texture within the total tileset texture.
/// </summary>
/// <param name="tileIndex">Index of the tile (GID) within the map file</param>
/// <param name="tileSets">Enumerable list of tilesets used to find out which tileset a tile belongs to</param>
/// <param name="tileLayerType"></param>
/// <returns></returns>
private Tile CreateTile(int tileIndex, IEnumerable<TileSetContent> tileSets)
{
if (tileSets == null) throw new ArgumentNullException("tileSets");
Tile tile = new Tile();
// we don't want to look up tiles with ID 0 in tile sets because Tiled Map Editor treats ID 0 as an empty tile
if (tileIndex > Tile.EmptyTileID)
{
Texture tileSetTexture = null;
Rectangle source = new Rectangle();
foreach (TileSetContent tileSet in tileSets)
{
if (tileIndex - tileSet.FirstGID < tileSet.Tiles.Count)
{
tileSetTexture = tileSet.Texture;
source = tileSet.Tiles[tileIndex - tileSet.FirstGID].SourceTextureBounds;
break;
}
}
tile = new Tile(tileSetTexture, source, TileWidth, TileHeight);
}
return tile;
}
/// <summary>
/// Adds a single tile to the layer's collection of tiles.
/// </summary>
/// <param name="tile"></param>
public void AddTile(Tile tile)
{
tiles.Add(tile);
}