private Boolean IsGameOver(IEnumerable<GameCell> cells, Int32 gameTableSize)
{
var hasNoFreeCell = cells.All(cell => cell.Owner != Player.NonPlayer);
var scores = new Int32[2*gameTableSize + 2];
var players = Players.ToArray();
foreach (var cell in cells)
{
var point = CalculatePoint(cell, players);
var row = cell.Location.X;
var column = cell.Location.Y;
scores[row] += point;
scores[gameTableSize + column] += point;
if (row == column) scores[2*gameTableSize] += point;
if (gameTableSize - 1 - column == row) scores[2*gameTableSize + 1] += point;
}
foreach (var score in scores)
{
if (score == gameTableSize)
{
Winner = players[0];
}
else if (score == -gameTableSize)
{
Winner = players[1];
}
}
var hasWinner = Winner != Player.NonPlayer;
return hasNoFreeCell || hasWinner;
}
public void StartGame(IEnumerable<Player> players)
{
if (players == null)
throw new ArgumentNullException(nameof(players));
if (players.Count() != 2)
throw new ArgumentException("Only two players can play.");
Players = players;
Winner = Player.NonPlayer;
GameStatus = GameStatus.Playing;
currentPlayerIndex = 0;
gameCells = GenerateGameTable(GameTableSize);
}
private static Int32 CalculatePoint(GameCell cell, Player[] players)
{
if (cell.Owner == players[0]) return 1;
if (cell.Owner == players[1]) return -1;
return 0;
}