public Matchup(Team a, Team b)
{
A = a;
B = b;
}
/// <summary>
/// Generate the Rounds
/// </summary>
public void Run()
{
// Odd teams
if (_teams.Count % 2 != 0)
_teams.Add(new Team("", true));
// Number of teams. Always even
var totalTeams = _teams.Count;
// Number of round.
var rounds = totalTeams - 1;
// Initial Team positions. Teams other than 0 are then rotated clockwise.
// Think of it as a grid, teams always play their opposite.
// E.g
// 0 1 2 3 => 0 4 1 2 => 0 5 4 1 => etc.
// 4 5 6 7 5 6 7 3 6 7 3 2
var roundTeams = _teams.ToArray();
for (var r = 0; r < rounds; r++) {
// Don't need to do anything first round
if (r != 0) {
var newPositions = new Team[totalTeams];
for (var rt = 0; rt < totalTeams; rt++) {
var team = roundTeams[rt];
var newIndex = rt;
// First team stays where it is
if (rt != 0) {
// Move top row along right
if (rt < totalTeams / 2 - 1)
newIndex++;
// Top right corner to bottom right
else if (rt == totalTeams / 2 - 1)
newIndex = totalTeams - 1;
// Move bottom row along left
else if (rt > totalTeams / 2)
newIndex--;
// Move bottom left to 2nd position
else
newIndex = 1;
}
// Place team in position
newPositions[newIndex] = team;
}
// Update Round Teams
roundTeams = newPositions;
}
// Create Round
var round = new Round(r + 1);
for (var rm = 0; rm < totalTeams / 2; rm++) {
var teamA = roundTeams[rm];
var teamB = roundTeams[rm + totalTeams / 2];
// Ghost (rest round)
if (teamA.Ghost || teamB.Ghost)
continue;
var match = new Matchup(teamA, teamB);
round.Matchups.Add(match);
}
Rounds.Add(round);
}
}