public static FormationResource Create(Formation formation)
{
var formationResource = new FormationResource(formation.Id)
{
Name = formation.Name
};
return formationResource;
}
public List<Player> GenerateStartingLineup(List<Player> players, Formation formation)
{
// Sort the players on rating and then on name.
players.Sort(delegate (Player p1, Player p2)
{
int ratingDiff = p1.Rating.CompareTo(p2.Rating);
if (ratingDiff != 0) return ratingDiff;
return string.Compare(p1.Name, p2.Name, StringComparison.OrdinalIgnoreCase);
});
var newPlayers = new Player[players.Count];
int teamOrder = 0;
// Split the players into three lists: the goalkeepers, the best 10 and the rest.
Position goalkeeperPosition;
using (var positionRepository = new RepositoryFactory().CreatePositionRepository())
{
goalkeeperPosition = positionRepository.GetGoalkeeper();
}
var goalkeepers = players.Where(player => player.PreferredPosition.Equals(goalkeeperPosition)).ToList();
var bestFieldPlayers = players.Where(player => !player.PreferredPosition.Equals(goalkeeperPosition)).Take(10).ToList();
var otherFieldPlayers = players.Where(player => !player.PreferredPosition.Equals(goalkeeperPosition)).Skip(10).ToList();
// Pick the best goalkeeper.
var bestGoalkeeper = goalkeepers.First();
goalkeepers.Remove(bestGoalkeeper);
bestGoalkeeper.CurrentPosition = goalkeeperPosition;
bestGoalkeeper.TeamOrder = teamOrder;
newPlayers[teamOrder] = bestGoalkeeper;
teamOrder++;
// Put the 10 best field players on their preferred position if possible.
while (teamOrder < 11)
{
var positionWeNeed = formation.Positions[teamOrder];
var playerForPos = bestFieldPlayers.FirstOrDefault(player => player.PreferredPosition.Equals(positionWeNeed));
if (playerForPos != null)
{
playerForPos.CurrentPosition = positionWeNeed;
playerForPos.TeamOrder = teamOrder;
newPlayers[teamOrder] = playerForPos;
bestFieldPlayers.Remove(playerForPos);
}
teamOrder++;
}
// Check whether the starting eleven has positions without a player and pick players for these positions.
for (int i = 0; i < 11; i++)
{
if (newPlayers[i] == null)
{
Player playerForPos = null;
var positionWeNeed = formation.Positions[i];
// 1) Get a player from the best 10 players (if any left) that has an alternative for this position.
var alternativePositions = GetAlternativePositions(positionWeNeed);
foreach (var alternativePosition in alternativePositions)
{
playerForPos = bestFieldPlayers.FirstOrDefault(player => player.PreferredPosition.Equals(alternativePosition));
if (playerForPos != null)
{
playerForPos.CurrentPosition = positionWeNeed;
playerForPos.TeamOrder = i;
newPlayers[i] = playerForPos;
bestFieldPlayers.Remove(playerForPos);
break;
}
}
// 2) If not found, get one of the remaining players that has this position
if (playerForPos == null)
{
playerForPos = otherFieldPlayers.FirstOrDefault(player => player.PreferredPosition.Equals(positionWeNeed));
if (playerForPos != null)
{
playerForPos.CurrentPosition = positionWeNeed;
playerForPos.TeamOrder = i;
newPlayers[i] = playerForPos;
otherFieldPlayers.Remove(playerForPos);
}
}
// 3) If not found, get one of the remaining players that has an alternative for this position.
if (playerForPos == null)
{
foreach (var alternativePosition in alternativePositions)
{
playerForPos = otherFieldPlayers.FirstOrDefault(player => player.PreferredPosition.Equals(alternativePosition));
if (playerForPos != null)
{
playerForPos.CurrentPosition = positionWeNeed;
playerForPos.TeamOrder = i;
newPlayers[i] = playerForPos;
otherFieldPlayers.Remove(playerForPos);
break;
}
}
}
}
}
// If the starting eleven still have vacant positions we have a real problem...
for (int i = 0; i < 11; i++)
{
if (newPlayers[i] == null)
{
throw new Exception("Houston, we have a problem: The starting line up algorithm is not working");
}
}
// Assign the team order to all players that are not in the starting eleven.
foreach (var bestFieldPlayer in bestFieldPlayers)
{
bestFieldPlayer.TeamOrder = teamOrder;
newPlayers[teamOrder] = bestFieldPlayer;
teamOrder++;
}
foreach (var goalkeeper in goalkeepers)
{
goalkeeper.TeamOrder = teamOrder;
newPlayers[teamOrder] = goalkeeper;
teamOrder++;
}
foreach (var otherFieldPlayer in otherFieldPlayers)
{
otherFieldPlayer.TeamOrder = teamOrder;
newPlayers[teamOrder] = otherFieldPlayer;
teamOrder++;
}
return newPlayers.ToList();
}