List <int> errDomain = new List <int>();//keeps track of the coordinates of all the squares that are involved in the error.
//ctor that takes an errtyp and a square, the errtype will help determine the errdomain and the square is used to find squares that are invloved in the error
public Error(errType err, Square inc)
{
incon = inc.deepCopy();
error = err;
switch (error)
{
case errType.rowErr:
for (int i = 0; i < 9; i++)
{
int tempindex = incon.Y * 9 + i;
errDomain.Add(tempindex);
}
break;
case errType.columnErr:
for (int i = 0; i < 9; i++)
{
int tempin = incon.X + (i * 9);
errDomain.Add(tempin);
}
break;
case errType.squareErr:
int temp = incon.SubCube;
for (int i = 0; i < 9; i++)
{
errDomain.Add(cubeCoords[temp, i]);
}
break;
case errType.single:
int index = incon.Y * 9 + incon.X;
errDomain.Add(index);
break;
}
}
//ctor that only copies the square from its argument
public Error(Square inc)
{
incon = inc.deepCopy();
}
//modifies the square that is at the same position as temp, creates a deepcopy of temp
public void modBoard(Square temp)
{
int index = temp.Y * 9 + temp.X;
board[index] = temp.deepCopy();
}
//updates the square specified by the argument temp and updates the domain of all squares that temp constrains
public void updateBoard(Square temp)
{
board[(temp.Y * 9) + temp.X] = temp.deepCopy();
updatePossibles(temp);
}