public bool SearchSolution(SolutionState initialState)
{
Ensure.Arg(initialState, nameof(initialState)).IsNotNull();
Reset();
// Берем начальное состояние за текущее
CurrentState = initialState;
// Бежим по дереву состояний, пока не найдем или оно не кончится
while (true)
{
// Мы пришли или вернулись на некоторое состояние,
// надо его проверить и оповестить, а если оно конечное - то все
if (CheckCurrentState())
{
return(true);
}
// Если не конечное - идем по дереву, если еще есть куда
if (!ProceedToNextState())
{
return(false);
}
}
}
public Figure(Color colorOfOriginCell, IEnumerable <Point> otherCellPoints)
{
Ensure.Arg(otherCellPoints, nameof(otherCellPoints)).IsNotNullOrEmpty();
ColorOfOriginCell = colorOfOriginCell;
Cells = new ReadOnlyCollection <FigureCell>(CalculateCells(colorOfOriginCell, otherCellPoints));
}
public static Board CreateByPlacementNewFigure(Board prev, Figure figure, Point point)
{
Ensure.Arg(prev, nameof(prev)).IsNotNull();
Ensure.Arg(figure, nameof(figure)).IsNotNull();
return(new Board(prev, figure, point));
}
private Board(ICollection <Placement> figures)
{
Ensure.Arg(figures, nameof(figures)).IsNotNull();
Figures = figures;
PointsMap = CalcPointsMap();
OddCellsColor = CalcOddCellsColor();
}
public Placement(Figure figure, Point point, int num)
{
Ensure.Arg(figure, nameof(figure)).IsNotNull();
Figure = figure;
Num = num;
Point = point;
}
public static Figure Transform(Figure figure, Func <Point, Point> pointTransform)
{
Ensure.Arg(figure, nameof(figure)).IsNotNull();
Ensure.Arg(pointTransform, nameof(pointTransform)).IsNotNull();
return(new Figure(
figure.ColorOfOriginCell,
figure.Cells.Skip(1).Select(c => pointTransform(c.RelativePoint))));
}
private SolutionState(Board board, IList <Figure> restFigures, Dictionary <Figure, IList <Figure> > figureTransformations)
{
Ensure.Arg(board, nameof(board)).IsNotNull();
Ensure.Arg(restFigures, nameof(restFigures)).IsNotNull();
Ensure.Arg(figureTransformations, nameof(figureTransformations)).IsNotNull();
Board = board;
RestFigures = new ReadOnlyCollection <Figure>(restFigures);
FigureTransformations = figureTransformations;
}
public static IList <Figure> GetTransformations(Figure figure)
{
Ensure.Arg(figure, nameof(figure)).IsNotNull();
return
(GetRotates(figure)
.Concat(GetRotates(FlipX(figure)))
.Distinct(FigureLinearTransitionComparer.Instance)
.ToList());
}
public static IEnumerable <Figure> GetRotates(Figure figure)
{
Ensure.Arg(figure, nameof(figure)).IsNotNull();
var rotate1 = RotateRight(figure);
var rotate2 = RotateRight(rotate1);
var rotate3 = RotateRight(rotate2);
return(new[] { figure, rotate1, rotate2, rotate3 });
}
public bool IsValidPlacement(Figure figure, Point point)
{
Ensure.Arg(figure, nameof(figure)).IsNotNull();
Color?oddColor = OddCellsColor;
return
(IsPossiblePlacement(figure, point) &&
(
oddColor == null ||
CalculateOddCellsColor(point, figure.ColorOfOriginCell) == oddColor));
}
public bool IsPossiblePlacement(Figure figure, Point point)
{
Ensure.Arg(figure, nameof(figure)).IsNotNull();
return
(figure.Cells.All(fc =>
{
var p = fc.RelativePoint.Shift(point);
return IsInRange(p) && !HasCell(p);
}));
}
public int Compare(FigureCell cellA, FigureCell cellB)
{
Ensure.Arg(cellA, nameof(cellA)).IsNotNull();
Ensure.Arg(cellB, nameof(cellB)).IsNotNull();
int colorDiff = ((int)cellA.Color).CompareTo((int)cellB.Color);
return(colorDiff == 0
? cellA.RelativePoint.CompareTo(cellB.RelativePoint)
: colorDiff);
}
private static IList <FigureCell> CalculateCells(Color colorOfOriginCell, IEnumerable <Point> otherCellPoints)
{
Ensure.Arg(otherCellPoints, nameof(otherCellPoints)).IsNotNull();
return
(new[] { Point.Origin }
.Concat(otherCellPoints)
.Select(
p => new FigureCell(p, CalculateColor(colorOfOriginCell, p)))
.ToList());
}
public SolutionState CreateNextState(Decision decision)
{
Ensure.Arg(decision, nameof(decision)).IsNotNull();
var newBoard =
Board.CreateByPlacementNewFigure(
Board,
decision.TransformedFigure,
decision.PlacementPoint);
return
(new SolutionState(newBoard, RestFigures.Where(f => f != decision.SelectedFigure).ToList(), FigureTransformations));
}
public static void Print(Board board)
{
Ensure.Arg(board, nameof(board)).IsNotNull();
WithSaveAndRestoreColors(() =>
{
foreach (var point in Board.AllPointsOrdered)
{
Print(board.GetPointInfo(point));
if (point.X == Board.HIGH)
{
Console.WriteLine();
}
}
});
}
public static Figure RotateRight(Figure figure)
{
Ensure.Arg(figure, nameof(figure)).IsNotNull();
return(Transform(figure, RotateRightPoint));
}