/**
* Written by Nathan: Step one in solving the rubiks cube.
* This will solve the white cross on top of the cube.
* NOTE: This is the version I had before cloning Luke's repo.
*/
public void SolveWhiteCross()
{
while (!WhiteCrossSolved())
{
List <Block> yellow_slice = cube.GetSlice(Color.Yellow);
Orientor front_face;
Edge edge_piece;
Boolean block_with_white_on_bottom = false, block_with_white_in_center, block_on_top_not_oriented_correctly;
//will take any edge piece with the white on the bottom and place it where it needs to be.
foreach (Block block_in_yellow_slice in yellow_slice)
{
//if the blocks in the yellow slice that have a white color also have a green color
//is an edge piece
if (cube.GetBlock(Color.Green, true, cube.GetBlock(Color.White, true, yellow_slice)).Count == 1)
{
block_with_white_on_bottom = true;
edge_piece = (Edge)cube.GetBlock(Color.Green, true, cube.GetBlock(Color.White, true, yellow_slice))[0];
//while the edgepeice isn't directly under the side it needs to be,
//cube.Rotate it until it is.
while (!edge_piece.Equals(cube.GetBlock(1, 0, 0)))
{
cube.Rotate(Color.Yellow, Direction.Clockwise);
}
//get the block that will give you the orientation to use as the front face
front_face = Cube.GetOrientation(Color.Green);
PlaceBottomEdgePieceInCross(edge_piece, front_face);
//yellow_slice = cube.GetSlice(Color.Yellow);
break;
}
else if (cube.GetBlock(Color.Orange, true, cube.GetBlock(Color.White, true, yellow_slice)).Count == 1)
{
block_with_white_on_bottom = true;
edge_piece = (Edge)cube.GetBlock(Color.Orange, true, cube.GetBlock(Color.White, true, yellow_slice))[0];
while (!edge_piece.Equals(cube.GetBlock(0, 0, 1)))
{
cube.Rotate(Color.Yellow, Direction.Clockwise);
}
front_face = Cube.GetOrientation(Color.Orange);
PlaceBottomEdgePieceInCross(edge_piece, front_face);
//yellow_slice = cube.GetSlice(Color.Yellow);
break;
}
else if (cube.GetBlock(Color.Red, true, cube.GetBlock(Color.White, true, yellow_slice)).Count == 1)
{
block_with_white_on_bottom = true;
edge_piece = (Edge)cube.GetBlock(Color.Red, true, cube.GetBlock(Color.White, true, yellow_slice))[0];
while (!edge_piece.Equals(cube.GetBlock(2, 0, 1)))
{
cube.Rotate(Color.Yellow, Direction.Clockwise);
}
front_face = Cube.GetOrientation(Color.Red);
PlaceBottomEdgePieceInCross(edge_piece, front_face);
//yellow_slice = cube.GetSlice(Color.Yellow);
break;
}
else if (cube.GetBlock(Color.Blue, true, cube.GetBlock(Color.White, true, yellow_slice)).Count == 1)
{
block_with_white_on_bottom = true;
edge_piece = (Edge)cube.GetBlock(Color.Blue, true, cube.GetBlock(Color.White, true, yellow_slice))[0];
//Block temp = cube.GetBlock(1, 0, 2);
while (!edge_piece.Equals(cube.GetBlock(1, 0, 2)))
{
cube.Rotate(Color.Yellow, Direction.Clockwise);
}
front_face = Cube.GetOrientation(Color.Blue);
PlaceBottomEdgePieceInCross(edge_piece, front_face);
break;
}
else
{
block_with_white_on_bottom = false;
}
}
/*****************************************************
* if edge piece is in the center, then put it in the bottom layer,
* and the above will put it in the correct position.
*/
if (block_with_white_in_center = cube.GetBlock(0, 1, 0).HasColor(Color.White))
{
cube.Rotate(Color.Green, Direction.CounterClockwise);
}
else if (block_with_white_in_center = cube.GetBlock(0, 1, 2).HasColor(Color.White))
{
cube.Rotate(Color.Orange, Direction.CounterClockwise);
}
else if (block_with_white_in_center = cube.GetBlock(2, 1, 2).HasColor(Color.White))
{
cube.Rotate(Color.Blue, Direction.CounterClockwise);
}
else if (block_with_white_in_center = cube.GetBlock(2, 1, 0).HasColor(Color.White))
{
cube.Rotate(Color.Red, Direction.CounterClockwise);
}
else
{
block_with_white_in_center = false;
}
if (block_with_white_in_center)
{
continue;
}
/******************************************************/
/*****************************************************
* if edge piece is in the correct position, but the incorrect
* orientation, then put it in the bottom layer, and let the
* placeBottomEdgePieceInCross(...) function handle puting it
* in the correct position
*/
if (block_on_top_not_oriented_correctly = cube.GetBlock(1, 2, 0).front == Color.White)
{
front_face = Cube.GetOrientation(Color.Green);
}
else if (block_on_top_not_oriented_correctly = cube.GetBlock(0, 2, 1).left == Color.White)
{
front_face = Cube.GetOrientation(Color.Orange);
}
else if (block_on_top_not_oriented_correctly = cube.GetBlock(1, 2, 2).back == Color.White)
{
front_face = Cube.GetOrientation(Color.Blue);
}
else if (block_on_top_not_oriented_correctly = cube.GetBlock(2, 2, 1).right == Color.White)
{
front_face = Cube.GetOrientation(Color.Red);
}
else
{
front_face = null;
block_on_top_not_oriented_correctly = false;
}
if (block_on_top_not_oriented_correctly)
{
cube.Rotate(front_face.front, Direction.Clockwise);
cube.Rotate(front_face.front, Direction.Clockwise);
}
/*****************************************************/
/*
* if the cross is solved, but incorreclty oriented
*/
if (!block_with_white_on_bottom &&
!block_with_white_in_center &&
!block_on_top_not_oriented_correctly)
{
CheckWhiteCross();
}
}
}
public Solver(Cube cube)
{
this.cube = cube;
}