// returns list of valid positions to consider, or null if none are found
private List <int[]> GetValidMoves(char color, char[,] boardState)
{
// list of valid moves to return
List <int[]> validMoves = new List <int[]>();
// search each square of board, if a legal move is found return true
for (int i = 0; i < 8; i++)
{
for (int j = 0; j < 8; j++)
{
if (AttachedGame.CheckMove(new int[] { i, j }, color, boardState) != null)
{
validMoves.Add(new int[] { i, j });
}
}
}
// if any valid moves are found, return list, else return null
if (validMoves.Count > 0)
{
return(validMoves);
}
else
{
return(null);
}
}
// apply the supplied move to the supplied copy of the board
private void ApplyMove(int[] move, char[,] boardCopy, char turnColor)
{
List <int[]> positionsToUpdate = AttachedGame.CheckMove(move, turnColor, boardCopy);
positionsToUpdate.ForEach(position =>
{
boardCopy[position[0], position[1]] = turnColor;
});
}
// returns true if there are no legal moves for either black or white
private bool GameOver(char[,] boardState)
{
return(!AttachedGame.HasLegalMoves('@', boardState) && !AttachedGame.HasLegalMoves('O', boardState));
}
