public static void ProcessMatchInformations(IList <MatchInformation> matchInformations)
{
RawMatchData.AddRange(matchInformations);
foreach (var matchInfo in matchInformations)
{
var fighter1 = GetOrCreateFighter(matchInfo.Fighter1);
var fighter2 = GetOrCreateFighter(matchInfo.Fighter2);
if (fighter1 == null || fighter2 == null)
{
continue;
}
// Win / loss by points?
var resultByPoints = matchInfo.Method.ToLower().Contains("pts") || matchInfo.Method.ToLower().Contains("points");
MatchResult result;
switch (matchInfo.Result)
{
case ("W"):
result = resultByPoints ? MatchResult.WinByPoints : MatchResult.WinBySubmission;
break;
case ("L"):
result = resultByPoints ? MatchResult.LossByPoints : MatchResult.LossBySubmission;
break;
case ("D"):
result = MatchResult.Draw;
break;
default:
throw new ArgumentException("Result could not be analyzed!");
}
int year;
if (!Int32.TryParse(matchInfo.Year, out year))
{
year = 0;
}
var match = new MatchWithoutId()
{
Fighter1 = fighter1,
Fighter2 = fighter2,
Result = result,
Year = year
};
Matches.Add(match);
}
}
/// <summary>
/// Calculates the points won or lost by the fighters in the match.
/// The result has to be added to the elo rating of fighter 1, and subtracted from the elo rating of fighter 2.
/// </summary>
private static double CalculateEloPoints(MatchWithoutId match)
{
// The expected result of the match. Between 0 (loss by submission) and 1 (win by submission).
var expectedResult = 1 / (1 + Math.Pow(10, (double)(match.Fighter2.EloRating - match.Fighter1.EloRating) / Constants.EloDifference));
// The actual result of the match.
double actualResult;
switch (match.Result)
{
case (MatchResult.WinBySubmission):
actualResult = 1.0;
break;
case (MatchResult.WinByPoints):
actualResult = Constants.WinByPointsFactor;
break;
case (MatchResult.Draw):
actualResult = 0.5;
break;
case (MatchResult.LossByPoints):
actualResult = 1 - Constants.WinByPointsFactor;
break;
case (MatchResult.LossBySubmission):
actualResult = 0;
break;
default:
throw new ArgumentException("Invalid match result detected!");
}
// The points won or lost by the fighters.
var eloDifference = Constants.EloFactor * (actualResult - expectedResult);
return(eloDifference);
}
private void dataGrid_SelectedCellsChanged(object sender, SelectedCellsChangedEventArgs e)
{
var fighter = dataGrid.SelectedItem as Fighter;
var matchesOfSelectedFighter1 =
matches
.Where(m => m.Fighter1 == fighter)
.Select(m => new { Opponent = m.Fighter2, Rating = (int)m.Fighter2.EloRating, Result = m.Result, Year = m.Year });
var matchesOfSelectedFighter2 =
matches
.Where(m => m.Fighter2 == fighter)
.Select(m => new { Opponent = m.Fighter1, Rating = (int)m.Fighter1.EloRating, Result = MatchWithoutId.InvertMatchResult(m.Result), Year = m.Year });
dataGrid1.ItemsSource = matchesOfSelectedFighter1.Concat(matchesOfSelectedFighter2).ToList();
}