/// <summary>
/// Get all cubes in specific row of an specific axis.
/// </summary>
/// <param name="axis">axis</param>
/// <param name="row">row</param>
/// <returns></returns>
List <int> SubCubeIndices(RubiksGlobal.TAxis axis, RubiksGlobal.TRow row)
{
List <int> indices = new List <int>();
// define the affected sub cubes
int[] r_x = { 0, 2 };
int[] r_y = { 0, 2 };
int[] r_z = { 0, 2 };
switch (axis)
{
case RubiksGlobal.TAxis.x: r_x[0] = r_x[1] = (int)row; break;
case RubiksGlobal.TAxis.y: r_y[0] = r_y[1] = (int)row; break;
case RubiksGlobal.TAxis.z: r_z[0] = r_z[1] = (int)row; break;
}
// collect indices of collected sub cubes
for (int z = r_z[0]; z <= r_z[1]; ++z)
{
for (int y = r_y[0]; y <= r_y[1]; ++y)
{
for (int x = r_x[0]; x <= r_x[1]; ++x)
{
int i = z * 9 + y * 3 + x;
indices.Add(_cube_map[i]);
}
}
}
return(indices);
}
/// <summary>
/// Shuffle the cube
/// </summary>
/// <param name="steps">number of shuffles</param>
public void Shuffle(int steps)
{
var rand = new Random();
ChangeOperation[] shuffle_ops = new ChangeOperation[steps];
for (int i = 0; i < steps; ++i)
{
RubiksGlobal.TAxis axis = RubiksGlobal.TAxis.x;
RubiksGlobal.TRow row = RubiksGlobal.TRow.low;
RubiksGlobal.TDirection direction = RubiksGlobal.TDirection.left;
bool valid = false;
do
{
axis = (RubiksGlobal.TAxis)rand.Next(0, 2);
row = (RubiksGlobal.TRow)rand.Next(0, 2);
direction = (RubiksGlobal.TDirection)rand.Next(0, 1);
if (i == 0)
{
break;
}
// check if not inverse operation
valid = shuffle_ops[i - 1].axis != axis ||
shuffle_ops[i - 1].row != row ||
shuffle_ops[i - 1].direction == direction;
// check if not 3 equal operations in a row
if (valid && i > 1)
{
valid = shuffle_ops[i - 1].axis != axis ||
shuffle_ops[i - 1].row != row ||
shuffle_ops[i - 1].direction != direction ||
shuffle_ops[i - 2].axis != axis ||
shuffle_ops[i - 2].row != row ||
shuffle_ops[i - 2].direction != direction;
}
}while (valid == false);
shuffle_ops[i] = new ChangeOperation(axis, direction, row);
}
// add change operations to pending queue
for (int i = 0; i < steps; ++i)
{
Change(shuffle_ops[i]);
}
}
public ChangeOperation(Vector3 rot_axis, int sub_cube_i)
{
_axis = RubiksGlobal.Axis(rot_axis);
_direction = RubiksGlobal.Direction(rot_axis);
_row = RubiksGlobal.Row(_axis, sub_cube_i);
}
public ChangeOperation(RubiksGlobal.TAxis axis, RubiksGlobal.TDirection direction, RubiksGlobal.TRow row)
{
_axis = axis;
_direction = direction;
_row = row;
}
