/// <summary>
/// Parses a notation string into a LayerMoveCollection
/// </summary>
/// <param name="notation">Defines to string to be parsed</param>
public static LayerMoveCollection Parse(string notation)
{
string layer = notation[0].ToString();
LayerMoveCollection moves = new LayerMoveCollection();
char[] ccwChars = new char[] { '\'', 'i' };
bool direction = !ccwChars.All(c => notation.Contains(c));
bool twice = notation.Contains("2");
switch (layer)
{
case "r": moves = new LayerMove(CubeFlag.RightSlice, direction, twice) & new LayerMove(CubeFlag.MiddleSliceSides, direction, twice); break;
case "l": moves = new LayerMove(CubeFlag.LeftSlice, direction, twice) & new LayerMove(CubeFlag.MiddleSliceSides, !direction, twice); break;
case "u": moves = new LayerMove(CubeFlag.TopLayer, direction, twice) & new LayerMove(CubeFlag.MiddleLayer, direction, twice); break;
case "d": moves = new LayerMove(CubeFlag.BottomLayer, direction, twice) & new LayerMove(CubeFlag.MiddleLayer, !direction, twice); break;
case "f": moves = new LayerMove(CubeFlag.FrontSlice, direction, twice) & new LayerMove(CubeFlag.MiddleSlice, direction, twice); break;
case "b": moves = new LayerMove(CubeFlag.BackSlice, direction, twice) & new LayerMove(CubeFlag.MiddleSlice, !direction, twice); break;
case "x": moves = new LayerMove(CubeFlag.RightSlice, direction, twice) & new LayerMove(CubeFlag.MiddleSliceSides, direction, twice) &
new LayerMove(CubeFlag.LeftSlice, !direction, twice); break;
case "y": moves = new LayerMove(CubeFlag.TopLayer, direction, twice) & new LayerMove(CubeFlag.MiddleLayer, direction, twice) &
new LayerMove(CubeFlag.BottomLayer, !direction, twice); break;
case "z": moves = new LayerMove(CubeFlag.FrontSlice, direction, twice) & new LayerMove(CubeFlag.MiddleSlice, direction, twice) &
new LayerMove(CubeFlag.BackSlice, !direction, twice); break;
}
return(moves);
}
/// <summary>
/// Adds multiple items at the end of the collection
/// </summary>
/// <param name="items">Defines the items which are meant to be added</param>
public void AddRange(LayerMoveCollection items)
{
foreach (LayerMove m in items)
{
Add(m);
}
}
/// <summary>
/// Adds a collection of LayerMoves to the given collection
/// </summary>
/// <param name="collection1">Defines the collection to be expanded</param>
/// <param name="collection2">Defines the collection to be added</param>
/// <returns></returns>
public static LayerMoveCollection operator &(LayerMoveCollection collection1, LayerMoveCollection collection2)
{
LayerMoveCollection lmc = new LayerMoveCollection();
lmc.AddRange(collection1);
lmc.AddRange(collection2);
return(lmc);
}
// *** OPERATORS ***
/// <summary>
/// Adds a single LayerMove to the given collection
/// </summary>
/// <param name="collection">Defines the collection to be expanded</param>
/// <param name="newMove">Defines the additional LayerMove</param>
/// <returns></returns>
public static LayerMoveCollection operator &(LayerMoveCollection collection, LayerMove newMove)
{
LayerMoveCollection lmc = new LayerMoveCollection();
lmc.AddRange(collection);
lmc.Add(newMove);
return(lmc);
}
// *** OPERATORS ***
/// <summary>
/// Combines two LayerMoves into a LayerMoveCollection
/// </summary>
public static LayerMoveCollection operator &(LayerMove first, LayerMove second)
{
LayerMoveCollection moves = new LayerMoveCollection();
moves.Add(first);
moves.Add(second);
return(moves);
}
/// <summary>
/// True, if the item accomplishes the equality conditions
/// </summary>
/// <param name="obj">LayerMoveCollection to be compared</param>
public override bool Equals(object obj)
{
if (obj is LayerMoveCollection)
{
LayerMoveCollection coll = (LayerMoveCollection)obj;
return(coll._moves.SequenceEqual(this._moves));
}
return(false);
}
/// <summary>
/// Transforms the layer move collection
/// </summary>
/// <param name="rotationLayer">Transformation layer</param>
/// <returns>The transformed layer move collection</returns>
public IMove Transform(CubeFlag rotationLayer)
{
LayerMoveCollection newMoves = new LayerMoveCollection();
foreach (LayerMove move in _moves)
{
LayerMove newMove = new LayerMove(move.Layer, move.Direction, move.Twice); // deep clone
newMoves &= (LayerMove)newMove.Transform(rotationLayer);
}
return(newMoves);
}
/// <summary>
/// Converts the notation of an algorithm in a collection of layer moves
/// </summary>
/// <param name="algorithm">Notation: separator = " " (space); counter-clockwise = any character (', i)</param>
///
public Algorithm(string algorithm)
{
this.Moves = new List <IMove>();
foreach (string s in algorithm.Split(' '))
{
LayerMove move;
LayerMoveCollection collection;
if (LayerMove.TryParse(s, out move))
{
this.Moves.Add(move);
}
else if (LayerMoveCollection.TryParse(s, out collection))
{
this.Moves.Add(collection);
}
else
{
throw new Exception("Invalid notation");
}
}
}
