public void UpdateScores(string winnerName)
{
// Rn = Ro + K(W - We)
// We = 1 / (exp10(-dr / 400) + 1)
var dao = new UserDAOService();
double avg = this.GetDifScore();
double add = 32 * (1 - (1 / (Math.Pow(10, -avg / 400) + 1)));
double lose = 32 * (-(1 / (Math.Pow(10, -avg / 400) + 1)));
int newScore;
if (players.ContainsKey(winnerName))
{
if (players[winnerName].IsComputer == false)
{
newScore = (int)Math.Round(dao.FindUserByName(winnerName).Score + add);
dao.UpdateScore(winnerName, newScore);
}
}
foreach (var p in players.Values)
{
if (!p.IsComputer)
{
if (p.ID != winnerName)
{
newScore = (int)Math.Round(dao.FindUserByName(p.ID).Score + lose);
dao.UpdateScore(p.ID, newScore);
}
}
}
}
public double GetDifScore()
{
int min = 100000, max = -100000;
var dao = new UserDAOService();
foreach (var player in players.Values)
{
var p = dao.FindUserByName(player.ID);
int s = p == null?1000:p.Score;
if (s < min)
{
min = s;
}
if (s > max)
{
max = s;
}
}
return(max - min);
}