public static void GenerateNextPairRound(TournamentDbContext _context)
{
int lastRound = GetLastRoundNo(_context);
List <RoundMatchup> roundMatchups = _context.RoundMatchups.Include(r => r.PlayerOne).Include(r => r.PlayerTwo).Where(r => r.RoundNo == lastRound).ToList();
List <PlayerPair> playerPairs = new List <PlayerPair>();
foreach (RoundMatchup roundMatchup in roundMatchups)
{
PlayerPair pair = new PlayerPair()
{
First = roundMatchup.PlayerOne,
Second = roundMatchup.PlayerTwo
};
playerPairs.Add(pair);
}
//List<int> AllocatedTables = new List<int>(GetnoOfTables());
int secondaryIndex = 0;
int i = 0;
while (i < playerPairs.Count)
{
//Skip this player if they are already allocated an opponent
if (playerPairs[i].CurrentOpponent == null)
{
if (secondaryIndex == 0)
{
secondaryIndex = i + 1;
}
int s = 0;
for (s = secondaryIndex; s < playerPairs.Count; s++)
{
if (playerPairs[s].CurrentOpponent == null)
{
//Check if higher player has ever played lower player
var playerOneOpponents = PlayerActions.GetAllOpponents(playerPairs[i].First, _context);
var playerTwoOpponents = PlayerActions.GetAllOpponents(playerPairs[i].Second, _context);
var opponents = playerOneOpponents.Union(playerTwoOpponents);
var hasPlayed = false;
foreach (Player opponent in opponents)
{
if (playerPairs[s].First == opponent || playerPairs[s].Second == opponent)
{
hasPlayed = true;
}
}
//If they have not played allocate them as opponents
if (hasPlayed == false)
{
playerPairs[i].CurrentOpponent = playerPairs[s];
playerPairs[s].CurrentOpponent = playerPairs[i];
secondaryIndex = 0;
break;
}
/**
* Following block is to deallocate the next lowest ranked allocated pair
**/
if (playerPairs.Where(p => p.CurrentOpponent == null).LastOrDefault() == playerPairs[s] && (playerPairs[i].CurrentOpponent == null))
//if (s == (players.Count - 1) && (players[i].CurrentOpponent == null))
{
if (i - 1 >= 0)
{
//Set the lowestAllocatedPair to the highest ranked pair
PlayerPair lowestAllocatedPair = playerPairs[0];
//Iterate from the second highest ranked pair all the way to the pair ranked one higher than the player currently being matched
for (int playerIndex = 1; playerIndex < i; playerIndex++)
{
//Assign the current player to the player being examined in the current iteration of the loop
PlayerPair currentPair = playerPairs[playerIndex];
//Check that the current player has an opponent (if not, skip to the next iteration of the loop)
if (currentPair.CurrentOpponent != null)
{
//Proceed if the current player's opponent has a higher rank than the current player
if (playerPairs.IndexOf(currentPair.CurrentOpponent) < playerPairs.IndexOf(currentPair))
{
if (playerPairs.IndexOf(currentPair.CurrentOpponent) > playerPairs.IndexOf(lowestAllocatedPair))
{
//Set lowestAllocatedPair to the current player's opponent
//(The highest ranked member of the new lowest ranked allocated pair)
lowestAllocatedPair = currentPair.CurrentOpponent;
}
}
//Proceed if the current player has a higher rank than their opponent
else if (playerPairs.IndexOf(currentPair) < playerPairs.IndexOf(currentPair.CurrentOpponent))
{
//Proceed if the current player has a lower rank than the previous value of lowestAllocatedPair
if (playerPairs.IndexOf(currentPair) > playerPairs.IndexOf(lowestAllocatedPair))
{
//Set lowestAllocatedPair to the current player
//(The highest ranked member of the new lowest ranked allocated pair)
lowestAllocatedPair = currentPair;
}
}
}
}
//Set the new player to be allocated to the highest member of the lowestAllocatedPair
i = playerPairs.IndexOf(lowestAllocatedPair) - 1;
//Set the starting player that will be tested for allocation suitability to one rank lower than
//the opponent of the highest member of the allocated pair
secondaryIndex = playerPairs.IndexOf(lowestAllocatedPair.CurrentOpponent) + 1;
//Deallocate the lowest allocated pair as each other's opponent
lowestAllocatedPair.CurrentOpponent.CurrentOpponent = null;
lowestAllocatedPair.CurrentOpponent = null;
}
}
}
}
}
i++;
}
int newRound = lastRound + 1;
foreach (PlayerPair playerPair in playerPairs)
{
if (playerPairs.IndexOf(playerPair) < playerPairs.IndexOf(playerPair.CurrentOpponent))
{
PairRoundMatchup roundMatchup = new PairRoundMatchup
{
RoundNo = newRound,
PlayerOne = playerPair.First,
PlayerTwo = playerPair.Second,
PlayerThree = playerPair.CurrentOpponent.First,
PlayerFour = playerPair.CurrentOpponent.Second
};
//allocates table for matchup
//roundMatchup.Table = AllocateTable(GetTables(player), AllocatedTables);
_context.Add(roundMatchup);
}
}
_context.SaveChanges();
}
public static Boolean GenerateNextPairRound(TournamentDbContext _context)
{
Boolean error = false;
int lastRound = GetLastRoundNo(_context);
var roundMatchups = _context.RoundMatchups.Where(r => !(r is PairRoundMatchup)).Include(r => r.PlayerOne).Include(r => r.PlayerTwo).Where(r => r.RoundNo == lastRound).ToList();
var pairRoundMatchups = _context.PairRoundMatchups.Include(r => r.PlayerOne).Include(r => r.PlayerTwo).Include(r => r.PlayerThree).Include(r => r.PlayerFour).Where(r => r.RoundNo == lastRound).ToList();
List <Player> activePlayers = _context.Players.Where(p => p.Active && p.Bye == false).ToList();
List <Player> activeByePlayers = new List <Player>();
List <PlayerPair> playerPairs = new List <PlayerPair>();
roundMatchups = roundMatchups.Union(pairRoundMatchups).ToList();
if (roundMatchups != null)
{
Tuple <List <PlayerPair>, List <Player> > playerPairsAndByes = (RoundMatchupActions.GetPlayerPairs(roundMatchups, activePlayers));
playerPairs = playerPairsAndByes.Item1;
activeByePlayers = playerPairsAndByes.Item2;
}
else
{
error = true;
}
//List<int> AllocatedTables = new List<int>(GetnoOfTables());
int secondaryIndex = 0;
int i = 0;
while (i < playerPairs.Count && i >= 0)
{
//Skip this player if they are already allocated an opponent
if (playerPairs[i].CurrentOpponent == null)
{
if (secondaryIndex == 0)
{
secondaryIndex = i + 1;
}
int s = 0;
for (s = secondaryIndex; s < playerPairs.Count; s++)
{
//If there are no more unique matchups, exit
if (i == -1)
{
i = -2;
error = true;
break;
}
if (playerPairs[s].CurrentOpponent == null)
{
//Check if higher player has ever played lower player
var playerOneOpponents = PlayerActions.GetAllOpponents(playerPairs[i].First, _context);
var playerTwoOpponents = PlayerActions.GetAllOpponents(playerPairs[i].Second, _context);
var opponents = playerOneOpponents.Union(playerTwoOpponents);
var hasPlayed = false;
foreach (Player opponent in opponents)
{
if (playerPairs[s].First == opponent || playerPairs[s].Second == opponent)
{
hasPlayed = true;
}
}
//If they have not played allocate them as opponents
if (hasPlayed == false)
{
playerPairs[i].CurrentOpponent = playerPairs[s];
playerPairs[s].CurrentOpponent = playerPairs[i];
secondaryIndex = 0;
break;
}
/**
* Following block is to deallocate the next lowest ranked allocated pair
**/
if (playerPairs.Where(p => p.CurrentOpponent == null).LastOrDefault() == playerPairs[s] && (playerPairs[i].CurrentOpponent == null))
//if (s == (players.Count - 1) && (players[i].CurrentOpponent == null))
{
if (i - 1 >= 0)
{
//Set the lowestAllocatedPair to the highest ranked pair
PlayerPair lowestAllocatedPair = playerPairs[0];
//Iterate from the second highest ranked pair all the way to the pair ranked one higher than the player currently being matched
for (int playerIndex = 1; playerIndex < i; playerIndex++)
{
//Assign the current player to the player being examined in the current iteration of the loop
PlayerPair currentPair = playerPairs[playerIndex];
//Check that the current player has an opponent (if not, skip to the next iteration of the loop)
if (currentPair.CurrentOpponent != null)
{
//Proceed if the current player's opponent has a higher rank than the current player
if (playerPairs.IndexOf(currentPair.CurrentOpponent) < playerPairs.IndexOf(currentPair))
{
if (playerPairs.IndexOf(currentPair.CurrentOpponent) > playerPairs.IndexOf(lowestAllocatedPair))
{
//Set lowestAllocatedPair to the current player's opponent
//(The highest ranked member of the new lowest ranked allocated pair)
lowestAllocatedPair = currentPair.CurrentOpponent;
}
}
//Proceed if the current player has a higher rank than their opponent
else if (playerPairs.IndexOf(currentPair) < playerPairs.IndexOf(currentPair.CurrentOpponent))
{
//Proceed if the current player has a lower rank than the previous value of lowestAllocatedPair
if (playerPairs.IndexOf(currentPair) > playerPairs.IndexOf(lowestAllocatedPair))
{
//Set lowestAllocatedPair to the current player
//(The highest ranked member of the new lowest ranked allocated pair)
lowestAllocatedPair = currentPair;
}
}
}
}
//Set the new player to be allocated to the highest member of the lowestAllocatedPair
i = playerPairs.IndexOf(lowestAllocatedPair) - 1;
//If there are no more unique matchups, exit
if (i == -1)
{
i = -2;
error = true;
break;
}
//Set the starting player that will be tested for allocation suitability to one rank lower than
//the opponent of the highest member of the allocated pair
secondaryIndex = playerPairs.IndexOf(lowestAllocatedPair.CurrentOpponent) + 1;
//Deallocate the lowest allocated pair as each other's opponent
lowestAllocatedPair.CurrentOpponent.CurrentOpponent = null;
lowestAllocatedPair.CurrentOpponent = null;
}
else
{
i = -2;
error = true;
break;
}
}
}
}
}
i++;
}
int newRoundNo = lastRound + 1;
foreach (PlayerPair playerPair in playerPairs)
{
if (playerPairs.IndexOf(playerPair) < playerPairs.IndexOf(playerPair.CurrentOpponent))
{
var roundMatchup = new PairRoundMatchup
{
RoundNo = newRoundNo,
PlayerOne = playerPair.First,
PlayerTwo = playerPair.Second,
PlayerThree = playerPair.CurrentOpponent.First,
PlayerFour = playerPair.CurrentOpponent.Second
};
//allocates table for matchup
//roundMatchup.Table = AllocateTable(GetTables(player), AllocatedTables);
_context.Add(roundMatchup);
}
//If there are no more unique matchups
if (error)
{
//RoundMatchup will hold random pair matchups where teammates were opponents last round unless their opponent is no longer active or has a bye
if (playerPair.CurrentOpponent == null && playerPairs[playerPairs.IndexOf(playerPair) + 1] != null)
{
playerPair.CurrentOpponent = playerPairs[playerPairs.IndexOf(playerPair) + 1];
playerPair.CurrentOpponent.CurrentOpponent = playerPair;
var roundMatchup = new PairRoundMatchup
{
RoundNo = newRoundNo,
PlayerOne = playerPair.First,
PlayerTwo = playerPair.Second,
PlayerThree = playerPair.CurrentOpponent.First,
PlayerFour = playerPair.CurrentOpponent.Second
};
_context.Add(roundMatchup);
}
}
}
CreateByeRounds(activeByePlayers, newRoundNo, _context);
_context.SaveChanges();
if (error)
{
return(false);
}
return(true);
}