/// <summary>
/// generates the regular cardinal movements
/// </summary>
private static IEnumerable <Move> AddBasicMoves(Cell cell, MoveDefinition moveDef)
{
var moves = new List <Move>();
bool isTopColor = cell.piece.color == GameBoard.Instance.Layout.topColor;
foreach (MoveDirection dir in Enum.GetValues(typeof(MoveDirection)))
{
if (dir == MoveDirection.None || !moveDef.direction.HasFlag(dir))
{
continue;
}
foreach (Point p in GetDirectionOffset(dir))
{
var offset = isTopColor ? new Point(p.X, -p.Y) : p;
moves.AddRange(
FilterMoves(moveDef,
GetCellsInDirection(cell, moveDef.distance, offset).ToList(), cell)
);
}
}
return(moves);
}
private static List <Move> AddLeaperMoves(MoveDefinition moveDef, Cell start, Point leapOffset, List <Move> moves)
{
var points = new List <Point>();
for (int i = -1; i <= 1; i += 2)
{
for (int j = -1; j <= 1; j += 2)
{
points.Add(start.position + new Point(leapOffset.X * i, leapOffset.Y * j));
points.Add(start.position + new Point(leapOffset.Y * i, leapOffset.X * j));
}
}
points.RemoveAll(p => !GameBoard.InBounds(p));
points.RemoveAll(p => GameBoard.Instance.TryGetPiece(p, out var piece) && piece.color == start.piece.color);
return(FilterMoves(moveDef, points.Select(p => new Move(p)).ToList(), start));
}
private static List <Move> FilterMoves(MoveDefinition moveDef, List <Move> moves, Cell cell)
{
if (moveDef.condition.HasFlag(MoveCondition.Initial) && cell.piece.HasMoved)
{
return(new List <Move>());
}
if (moveDef.condition.HasFlag(MoveCondition.CaptureOnly))
{
moves.RemoveAll(move => !GameBoard.Instance.CellOccupied(move.targetPosition));
}
if (moveDef.condition.HasFlag(MoveCondition.NotCaptureOnly))
{
moves.RemoveAll(move => GameBoard.Instance.CellOccupied(move.targetPosition));
}
moves.RemoveAll(m => !GameBoard.InBounds(m.targetPosition));
return(moves);
}