private static int ColorPenalty(GameColorResult wantedColorResult, GameColorResult mostlyPlayedAs)
{
if (mostlyPlayedAs == GameColorResult.Draw)
{
return(0);
}
if (mostlyPlayedAs == wantedColorResult)
{
return(-1);
}
return(1);
}
private static Player GetOpponent(GameColorResult wantedColorResult, Player playerToPair, List <Player> playersLeft, IEnumerable <Round> previousRounds, IEnumerable <RoundResult> standings)
{
var opponentsByWeight = new List <OpponentWeight>();
foreach (var player in playersLeft)
{
var opponenWeight = CalculateWeight(player, playerToPair, wantedColorResult, previousRounds, standings);
opponentsByWeight.Add(new OpponentWeight(player, opponenWeight));
}
var orderedByWeight = opponentsByWeight.OrderBy(o => o.Weight).ToList();
return(orderedByWeight.First().Player);
}
private static double CalculateWeight(Player player, Player playerToPair, GameColorResult wantedColorResult, IEnumerable <Round> previousRounds, IEnumerable <RoundResult> standings)
{
var weight = 1d;
if (player.PlayerId == playerToPair.PlayerId)
{
return(1000000);
}
var lastStandings = standings?.Last();
var roundNumber = previousRounds.Any() ? previousRounds.Last().RoundNumber + 1 : 1;
var playerGames = GetAllPreviousGames(previousRounds, player);
weight += ScorePenalty(roundNumber, lastStandings, player, playerToPair);
weight += FloatingPenalty(previousRounds, standings, player, playerToPair);
weight += OpponentPenalty(NumberOfTimesPlayerMetPreviously(playerToPair, playerGames));
weight += ColorPenalty(wantedColorResult, MostlyPlayedAs(playerGames, player));
weight += CountryPenalty(roundNumber, player, playerToPair);
return(weight);
}
