public void Solve()
{
while (!RubixCubeStatusEvaluator.SecondLayerIsSolved(_cube))
{
var backEdges = _cube.GetBackEdges();
if (backEdges.All(b => b.HasColour(Colour.Yellow)))
{
RotateIncorrectSideEdgeToBack();
}
while (GetSolvableEdge() == null)
{
_cube.RotateClockwise(Side.Back);
}
SolveBackEdge(GetSolvableEdge());
}
}
public void RotateClockwise_CorrectlyRotatesTheFrontFace()
{
cube.RotateClockwise(Side.Front);
var face = cube.GetFace(Side.Front);
Assert.AreEqual(Colour.Blue, face[0, 0].Left);
Assert.AreEqual(Colour.White, face[0, 0].Front);
Assert.AreEqual(Colour.Red, face[0, 0].Top);
Assert.AreEqual(Colour.Green, face[2, 2].Right);
Assert.AreEqual(Colour.White, face[2, 2].Front);
Assert.AreEqual(Colour.Orange, face[2, 2].Bottom);
}
private void ReorganiseMiddleEdges()
{
while (!RubixCubeStatusEvaluator.CrossIsFormed(_cube, Side.Back))
{
var middleEdges = GetMiddleEdges();
var numIncorrectEdges = middleEdges.Count(b => b.isCorrect);
if (numIncorrectEdges == 2)
{
var firstIncorrectEdge = middleEdges.First(b => !b.isCorrect);
var startNode = middleEdges.Find(firstIncorrectEdge);
if (startNode == null)
{
throw new Exception("There should be an incorrect edge");
}
if (startNode.Next != null && !startNode.Next.Value.isCorrect) // TODO: managed to get a NullReferenceException here...
{
var sideToRotate = firstIncorrectEdge.index switch
{
(0, 1) => Side.Right,
(1, 2) => Side.Top,
(2, 1) => Side.Left,
(1, 0) => Side.Bottom,
_ => throw new Exception("The selected block is not a middle edge")
};
PerformRuRuRuuRuRotation(sideToRotate);
}
else if (startNode.Previous != null && !startNode.Previous.Value.isCorrect)
{
var sideToRotate = firstIncorrectEdge.index switch
{
(0, 1) => Side.Bottom,
(1, 2) => Side.Right,
(2, 1) => Side.Top,
(1, 0) => Side.Left,
_ => throw new Exception("The selected block is not a middle edge")
};
PerformRuRuRuuRuRotation(sideToRotate);
}
else
{
switch (firstIncorrectEdge.index)
{
case (0, 1):
case (2, 1):
PerformRuRuRuuRuRotation(Side.Bottom);
PerformRuRuRuuRuRotation(Side.Left);
PerformRuRuRuuRuRotation(Side.Bottom);
break;
case (1, 2):
case (1, 0):
PerformRuRuRuuRuRotation(Side.Right);
PerformRuRuRuuRuRotation(Side.Bottom);
PerformRuRuRuuRuRotation(Side.Right);
break;
}
}
}
else if (numIncorrectEdges == 3)
{
var correctEdge = middleEdges.First(b => b.isCorrect);
var sideToRotate = correctEdge.index switch
{
(0, 1) => Side.Left,
(1, 2) => Side.Bottom,
(2, 1) => Side.Right,
(1, 0) => Side.Top,
_ => throw new Exception("The selected block is not a middle edge")
};
PerformRuRuRuuRuRotation(sideToRotate);
}
else
{
_cube.RotateClockwise(Side.Back);
}
}
}
private void RotateFrontEdgeToBack(Block block)
{
var sideToRotate = GetSideToRotate(block, Side.Front);
_cube.RotateClockwise(sideToRotate);
_cube.RotateClockwise(sideToRotate);
}