public Player CreateNewPlayer(int tournamentId)
{
var player = new Player();
var newPlayer = Database.Players.Add(player);
Database.SaveChanges();
var playerHistory = new PlayerGlickoHistory
{
PlayerId = newPlayer.PlayerId,
Ranking = 1500,
Deviation = 300,
Volatility = 0.06m,
TournamentId = tournamentId
};
//TODO: This may work instead of current implemenatation
//newPlayer.PlayerGlickoHistories.Add(new PlayerGlickoHistory
//{
// PlayerPlayerId = newPlayer.PlayerId,
// Ranking = 1500,
// Deviation = 300,
// Volatility = 0.06m,
// Date = tournamentDateTime
//});
Database.PlayerGlickoHistories.Add(playerHistory);
Database.SaveChanges();
return newPlayer;
}
public void RankTournament(int tournamentId)
{
var tournament = _tournamentDbHelper.GetTournamentPlayersAndMatches(tournamentId);
var newRankings = new List<PlayerGlickoHistory>();
foreach (var attendee in tournament.TournamentAttendees)
{
var playerOpponents = new List<GlickoOpponent>();
var playerRanking = attendee.Player.PlayerGlickoHistories.OrderByDescending(x => x.Tournament.Date).First();
var glickoPlayer = new GlickoPlayer((double)playerRanking.Ranking, (double)playerRanking.Deviation,
(double)playerRanking.Volatility);
var matches =
tournament.Matches.Where(x => x.Player1Id == attendee.PlayerId || x.Player2Id == attendee.PlayerId);
foreach (var match in matches)
{
var opponentPlayer = match.Player1Id != attendee.PlayerId ? match.Player1 : match.Player2;
var opponentRank = opponentPlayer.PlayerGlickoHistories.OrderByDescending(x => x.TournamentId == tournamentId).First();
var opponentGlicko = new GlickoPlayer((double)opponentRank.Ranking,
(double)opponentRank.Deviation, (double)opponentRank.Volatility);
var result = match.WinnerId == attendee.PlayerId ? 1 : 0;
var glickoOpponent = new GlickoOpponent(opponentGlicko, result);
playerOpponents.Add(glickoOpponent);
}
glickoPlayer = GlickoCalculator.CalculateRanking(glickoPlayer, playerOpponents);
var newRank = new PlayerGlickoHistory()
{
Deviation = Convert.ToDecimal(glickoPlayer.RatingDeviation),
Ranking = Convert.ToDecimal(glickoPlayer.Rating),
Volatility = Convert.ToDecimal(glickoPlayer.Volatility),
PlayerId = attendee.PlayerId,
TournamentId = tournamentId
};
newRankings.Add(newRank);
}
UpdateRankingsDb(newRankings);
}
public void AddPlayerHistory(PlayerGlickoHistory history)
{
Database.PlayerGlickoHistories.Add(history);
Database.SaveChanges();
}