public HitResult TryToHit(int x, int y)
{
var square = Squares.Where(s => s.X == x && s.Y == y).FirstOrDefault();
if (square != null && !square.IsHit)
{
square.IsHit = true;
if (Squares.All(s => s.IsHit))
{
return(HitResult.Destroyed);
}
else
{
return(HitResult.Wounded);
}
}
return(HitResult.Missed);
}
public (bool gameIsOver, string winner) IsGameOver()
{
bool xHasRow1 = Squares.Take(3).All(s => s == xGlyph);
bool xHasRow2 = Squares.Skip(3).Take(3).All(s => s == xGlyph);
bool xHasRow3 = Squares.Skip(6).Take(3).All(s => s == xGlyph);
bool xHasColumn1 = Squares[0] == xGlyph && Squares[3] == xGlyph && Squares[6] == xGlyph;
bool xHasColumn2 = Squares[1] == xGlyph && Squares[4] == xGlyph && Squares[7] == xGlyph;
bool xHasColumn3 = Squares[2] == xGlyph && Squares[5] == xGlyph && Squares[8] == xGlyph;
bool xHasDiagonal = Squares[2] == xGlyph && Squares[4] == xGlyph && Squares[6] == xGlyph;
bool xHasOtherDiagonal = Squares[0] == xGlyph && Squares[4] == xGlyph && Squares[8] == xGlyph;
bool yHasRow1 = Squares.Take(3).All(s => s == oGlyph);
bool yHasRow2 = Squares.Skip(3).Take(3).All(s => s == oGlyph);
bool yHasRow3 = Squares.Skip(6).Take(3).All(s => s == oGlyph);
bool yHasColumn1 = Squares[0] == oGlyph && Squares[3] == oGlyph && Squares[6] == oGlyph;
bool yHasColumn2 = Squares[1] == oGlyph && Squares[4] == oGlyph && Squares[7] == oGlyph;
bool yHasColumn3 = Squares[2] == oGlyph && Squares[5] == oGlyph && Squares[8] == oGlyph;
bool yHasDiagonal = Squares[2] == oGlyph && Squares[4] == oGlyph && Squares[6] == oGlyph;
bool yHasOtherDiagonal = Squares[0] == oGlyph && Squares[4] == oGlyph && Squares[8] == oGlyph;
bool xwins = xHasRow1 ||
xHasRow2 ||
xHasRow3 ||
xHasColumn1 ||
xHasColumn2 ||
xHasColumn3 ||
xHasDiagonal ||
xHasOtherDiagonal;
bool ywins = yHasRow1 ||
yHasRow2 ||
yHasRow3 ||
yHasColumn1 ||
yHasColumn2 ||
yHasColumn3 ||
yHasDiagonal ||
yHasOtherDiagonal;
if (xwins && ywins)
{
throw new InvalidOperationException(
"Both X and Y occupy winning positions. Review game log to identify how to fix this bug and then write some covering tests.");
}
if (xwins)
{
Winner = xGlyph;
return(true, xGlyph);
}
if (ywins)
{
Winner = oGlyph;
return(true, oGlyph);
}
//Check for a draw
string[] xsandos = new string[] { xGlyph, oGlyph };
if (Squares.All(s => xsandos.Contains(s)))
{
Winner = "DRAW";
return(true, Winner);
}
return(false, null);
}
/// <summary>
/// Determines whether this instance is solved.
/// </summary>
/// <returns></returns>
public bool IsSolved()
{
return(Squares.All(row => !row.Any(c => c == BOX)));
}