/// <summary>
/// Calculates the next position after a layer rotation
/// </summary>
/// <param name="layer">Rotation layer</param>
/// <param name="direction">Rotation direction</param>
public void NextFlag(CubeFlag layer, bool direction)
{
CubeFlag newFlags = CubeFlagService.NextFlags(Flags, layer, direction);
this.X = CubeFlagService.FirstXFlag(newFlags);
this.Y = CubeFlagService.FirstYFlag(newFlags);
this.Z = CubeFlagService.FirstZFlag(newFlags);
}
/// <summary>
/// Transforms the layer move
/// </summary>
/// <param name="rotationLayer">Transformation layer</param>
/// <returns>Transformed layer move</returns>
public IMove Transform(CubeFlag rotationLayer)
{
bool switchDir = CubeFlagService.IsYFlag(rotationLayer) && this.Layer.HasFlag(CubeFlag.MiddleSlice) ||
CubeFlagService.IsXFlag(rotationLayer) && this.Layer.HasFlag(CubeFlag.MiddleLayer) ||
CubeFlagService.IsZFlag(rotationLayer) && this.Layer.HasFlag(CubeFlag.MiddleSliceSides);
LayerMove newMove = new LayerMove(CubeFlagService.NextCubeFlag(this.Layer, rotationLayer, true), this.Direction ^ switchDir, this.Twice);
return(newMove);
}
/// <summary>
/// Returns the next flags of the old flags after a layer rotation
/// </summary>
/// <param name="rotationLayer">Rotation layer</param>
/// <param name="direction">Rotation direction</param>
/// <returns>Next cube flags</returns>
public static CubeFlag NextFlags(CubeFlag flags, CubeFlag rotationLayer, bool direction = true)
{
CubeFlag newFlags = CubeFlag.None;
IEnumerable <Enum> lstFlags = GetFlags(flags);
foreach (CubeFlag flag in lstFlags)
{
newFlags |= CubeFlagService.NextCubeFlag(flag, rotationLayer, direction);
}
return(newFlags);
}
// *** METHODS ***
/// <summary>
/// Parses a notation string into a LayerMove
/// </summary>
/// <param name="notation">Defines to string to be parsed</param>
/// <returns></returns>
public static LayerMove Parse(string notation)
{
string layer = notation[0].ToString();
CubeFlag rotationLayer = CubeFlagService.Parse(layer);
char[] ccwChars = new char[] { '\'', 'i' };
bool direction = !ccwChars.Any(c => notation.Contains(c));
bool twice = notation.Contains("2");
return(new LayerMove(rotationLayer, direction, twice));
}
// *** CONSTRUCTORS ***
/// <summary>
/// Constructor
/// </summary>
/// <param name="layer">Defines the layer to be moved</param>
/// <param name="direction">Defines the direction (true == clockwise and false == counter-clockwise)</param>
/// <param name="twice">Defines whether this layer will be turned twice or not</param>
/// <exception cref="System.Exception">Thrown when layer contains more than one flag</exception>
public LayerMove(CubeFlag layer, bool direction = true, bool twice = false)
{
if (CubeFlagService.CountFlags(layer) == 1)
{
this.Layer = layer;
this.Direction = direction;
this.Twice = twice;
}
else
{
throw new Exception("Impossible movement");
}
}
/// <summary>
/// Adds an item at the end of the collection
/// </summary>
/// <param name="item">Defines the item which is meant to be added</param>
/// <exception cref="System.Exception">Thrown if this movement would be impossible</exception>
public void Add(LayerMove item)
{
CubeFlag flag = item.Layer;
foreach (LayerMove m in _moves)
{
flag |= m.Layer;
}
if (CubeFlagService.IsPossibleMove(flag))
{
_moves.Add(item);
}
else
{
throw new Exception("Impossible movement");
}
}
/// <summary>
/// Parses a notation string into a layer move
/// </summary>
/// <param name="notation">String to be parsed</param>
/// <param name="move">The resulting layer move</param>
/// <returns>True, if the string was successfully parsed into a layermove</returns>
public static bool TryParse(string notation, out LayerMove move)
{
move = null;
string layer = notation[0].ToString();
CubeFlag rotationLayer = CubeFlagService.Parse(layer);
char[] ccwChars = new char[] { '\'', 'i' };
bool direction = !ccwChars.Any(c => notation.Contains(c));
bool twice = notation.Contains("2");
if (CubeFlagService.CountFlags(rotationLayer) == 1)
{
move = new LayerMove(rotationLayer, direction, twice);
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// Constructor with one CubeFlag
/// </summary>
/// <param name="flags">Defines the CubeFlag where the X-, Y- and ZFlag are filtered out</param>
public CubePosition(CubeFlag flags) : this(CubeFlagService.FirstXFlag(flags), CubeFlagService.FirstYFlag(flags), CubeFlagService.FirstZFlag(flags))
{
}
/// <summary>
/// Returns the single flags in this CubeFlag
/// </summary>
/// <returns></returns>
public IEnumerable <Enum> GetFlags()
{
return(CubeFlagService.GetFlags(Flags));
}
/// <summary>
/// Returns the next flag after a layer rotation
/// </summary>
/// <param name="rotationLayer">Rotation layer</param>
/// <param name="direction">Rotation direction</param>
/// <returns>Next cube flag</returns>
public static CubeFlag NextCubeFlag(CubeFlag flag, CubeFlag rotationLayer, bool direction = true)
{
CubeFlag nextFlag = CubeFlag.None;
if (CountFlags(flag) == 1)
{
if (CubeFlagService.IsXFlag(rotationLayer))
{
if (rotationLayer == CubeFlag.LeftSlice)
{
direction = !direction;
}
if (!direction && !IsXFlag(flag))
{
flag = CubeFlagService.GetOppositeFlag(flag);
}
switch (flag)
{
case CubeFlag.FrontSlice: nextFlag = CubeFlag.TopLayer; break;
case CubeFlag.MiddleSlice: nextFlag = CubeFlag.MiddleLayer; break;
case CubeFlag.BackSlice: nextFlag = CubeFlag.BottomLayer; break;
case CubeFlag.TopLayer: nextFlag = CubeFlag.BackSlice; break;
case CubeFlag.MiddleLayer: nextFlag = CubeFlag.MiddleSlice; break;
case CubeFlag.BottomLayer: nextFlag = CubeFlag.FrontSlice; break;
default: nextFlag = flag; break;
}
}
else if (CubeFlagService.IsYFlag(rotationLayer))
{
if (rotationLayer == CubeFlag.BottomLayer)
{
direction = !direction;
}
if (!direction && !IsYFlag(flag))
{
flag = CubeFlagService.GetOppositeFlag(flag);
}
switch (flag)
{
case CubeFlag.FrontSlice: nextFlag = CubeFlag.LeftSlice; break;
case CubeFlag.MiddleSlice: nextFlag = CubeFlag.MiddleSliceSides; break;
case CubeFlag.BackSlice: nextFlag = CubeFlag.RightSlice; break;
case CubeFlag.LeftSlice: nextFlag = CubeFlag.BackSlice; break;
case CubeFlag.MiddleSliceSides: nextFlag = CubeFlag.MiddleSlice; break;
case CubeFlag.RightSlice: nextFlag = CubeFlag.FrontSlice; break;
default: nextFlag = flag; break;
}
}
else if (CubeFlagService.IsZFlag(rotationLayer))
{
if (rotationLayer == CubeFlag.BackSlice)
{
direction = !direction;
}
if (!direction && !IsZFlag(flag))
{
flag = CubeFlagService.GetOppositeFlag(flag);
}
switch (flag)
{
case CubeFlag.TopLayer: nextFlag = CubeFlag.RightSlice; break;
case CubeFlag.MiddleLayer: nextFlag = CubeFlag.MiddleSliceSides; break;
case CubeFlag.BottomLayer: nextFlag = CubeFlag.LeftSlice; break;
case CubeFlag.LeftSlice: nextFlag = CubeFlag.TopLayer; break;
case CubeFlag.MiddleSliceSides: nextFlag = CubeFlag.MiddleLayer; break;
case CubeFlag.RightSlice: nextFlag = CubeFlag.BottomLayer; break;
default: nextFlag = flag; break;
}
}
}
return(CubeFlagService.ExceptFlag(nextFlag, CubeFlag.None));
}
