/// <summary>
/// Creates a new game state by applying the given move to the given starting
/// state. Verifies the move's validity, throwing an exception if the move is
/// illegal.
/// </summary>
/// <param name="initialState"></param>
/// <param name="applyMe"></param>
private GameState(GameState initialState, Move applyMe)
{
rowCount = initialState.rowCount;
occupiedHoles = new List<Coordinate>(initialState.occupiedHoles);
if (!occupiedHoles.Remove(applyMe.GetFrom()))
{
throw new ArgumentException(
"Move is not consistent with game state: 'from' hole was unoccupied.");
}
if (!occupiedHoles.Remove(applyMe.GetJumped()))
{
throw new ArgumentException(
"Move is not consistent with game state: jumped hole was unoccupied.");
}
if (occupiedHoles.Contains(applyMe.GetTo()))
{
throw new ArgumentException(
"Move is not consistent with game state: 'to' hole was occupied.");
}
if (applyMe.GetTo().GetRow() > rowCount || applyMe.GetTo().GetRow() < 1)
{
throw new ArgumentException(
"Move is not legal because the 'to' hole does not exist: " + applyMe.GetTo());
}
occupiedHoles.Add(applyMe.GetTo());
}
public GameState Apply(Move move)
{
return new GameState(this, move);
}
public GameState Apply(Move move)
{
return(new GameState(this, move));
}
