public GameData LoadFromFile(string filename)
{
string activeFilename = (filename ?? this.filename);
XDocument xmlFile;
try
{
xmlFile = XDocument.Load(activeFilename);
}
catch (FileNotFoundException)
{
throw new LoadGameFileException("No game file found from file.");
}
IEnumerable <XElement> xElements;
xElements = xmlFile.Descendants("Players").Descendants("Player");
if (xElements.Count() != 2)
{
throw new LoadGameFileException("Save file is incorrect. Wrong number of players.");
}
List <Player> players = xElements.Select(player => PlayerTranslator.Translate(player)).ToList();
xElements = xmlFile.Descendants("ActivePlayer").Descendants("Player");
if (!xElements.Any())
{
throw new LoadGameFileException("Save file is incorrect. Missing Active Player.");
}
PlayerColor activePlayerColor = (PlayerColor)Convert.ToInt32(
xElements.Select(player => player.Element("Color").Value).First());
Player activePlayer = players.First(player => player.Color == activePlayerColor);
xElements = xmlFile.Descendants("Piece");
if (!xElements.Any())
{
throw new LoadGameFileException("Save file is incorrect. Missing pieces.");
}
List <Piece> pieces = xElements.Select(piece => PieceTranslator.Translate(piece, players)).ToList();
List <Piece> kings = pieces.FindAll(piece => piece.Type == PieceType.King);
if (kings.Count != 2 || kings[0].Owner == kings[1].Owner)
{
throw new LoadGameFileException("Save file is incorrect. Wrong piece setup.");
}
xElements = xmlFile.Descendants("GameState");
if (xElements.Count() != 1)
{
throw new LoadGameFileException("Save file is incorrect. Missing single game state message.");
}
string gameStateMessage = xElements
.Select(element => element.Element("Message").Value).First();
return(new GameData(players, pieces, activePlayer, gameStateMessage));
}
public void UpdateGameState(Player player, string gameStateMessage)
{
XDocument xmlFile = XDocument.Load(filename);
xmlFile.Descendants("ActivePlayer").Remove();
xmlFile.Descendants("GameState").Remove();
xmlFile.Element("Root").Add(
new XElement("ActivePlayer", PlayerTranslator.Translate(player)),
new XElement("GameState", new XElement("Message", gameStateMessage)));
xmlFile.Save(filename);
}
public void SetupTempFile(List <Player> players, List <Piece> pieces, string gameStateMessage)
{
XDocument xmlFile = new XDocument(new XElement("Root",
new XElement("Players", players.Select(player => PlayerTranslator.Translate(player))),
new XElement("ActivePlayer", PlayerTranslator.Translate(
players.First(player => player.Color == PlayerColor.White))),
new XElement("GameState", new XElement("Message", gameStateMessage)),
new XElement("Pieces", pieces.Select(piece => PieceTranslator.Translate(piece)))));
xmlFile.Save(filename);
}