public override int findNumbers(PadNumber start, int digits)
{
if (start == null || "*".Equals(start.getNumber()) || "#".Equals(start.getNumber()))
{
throw new ArgumentException("Invalid start point");
}
if (start.getNumberAsNumber() == 5)
{
return(0);
} //Consider Adding an 'allowSpecialChars' condition
if (digits == 1)
{
return(1);
}
;
//Initialise the jagged array with -1 for each cell
this.movesFrom = new int[thePad.Length * thePad[0].Length];
for (int i = 0; i < this.movesFrom.Length; i++)
{
this.movesFrom[i] = -1;
}
fullNumbers = 0;
findNumbers(start, digits, 1);
return(fullNumbers);
}
public override int countAllowedMoves(PadNumber from)
{
int start = from.getNumberAsNumber();
if (movesFrom[start] != -1)
{
return(movesFrom[start]);
}
else
{
movesFrom[start] = allowedMoves(from).Count();
}
return(movesFrom[start]);
}
//public override bool canMove(PadNumber from, PadNumber to)
// {
// //Is the moves list available?
// if (!this.moves.ContainsKey(from))
// {
// //No? Process.
// allowedMoves(from);
// }
// if (this.moves[from] != null)
// {
// foreach (PadNumber option in this.moves[from])
// {
// if (option.getNumber().Equals(to.getNumber()))
// return true;
// }
// }
// return false;
// }
/***
* Overriden method that defines each Piece's movement restrictions.
*/
public override List <PadNumber> allowedMoves(PadNumber from)
{
//First encounter
if (this.moves == null)
{
this.moves = new Dictionary <PadNumber, List <PadNumber> >();
}
if (this.moves.ContainsKey(from))
{
return(this.moves[from]);
}
else
{
List <PadNumber> found = new List <PadNumber>();
int row = from.getY(); //rows
int col = from.getX(); //columns
//Cases:
//1. One horizontal move each way followed by two vertical moves each way
if (col - 1 >= 0 && row - 2 >= 0)//valid
{
if (thePad[row - 2][col - 1].getNumber().Equals("*") == false &&
thePad[row - 2][col - 1].getNumber().Equals("#") == false)
{
found.Add(thePad[row - 2][col - 1]);
this.movesFrom[from.getNumberAsNumber()] = this.movesFrom[from.getNumberAsNumber()] + 1;
}
}
if (col - 1 >= 0 && row + 2 < thePad.Length)//valid
{
if (thePad[row + 2][col - 1].getNumber().Equals("*") == false &&
thePad[row + 2][col - 1].getNumber().Equals("#") == false)
{
found.Add(thePad[row + 2][col - 1]);
this.movesFrom[from.getNumberAsNumber()] = this.movesFrom[from.getNumberAsNumber()] + 1;
}
}
if (col + 1 < thePad[0].Length && row + 2 < thePad.Length)//valid
{
if (thePad[row + 2][col + 1].getNumber().Equals("*") == false &&
thePad[row + 2][col + 1].getNumber().Equals("#") == false)
{
found.Add(thePad[row + 2][col + 1]);
this.movesFrom[from.getNumberAsNumber()] = this.movesFrom[from.getNumberAsNumber()] + 1;
}
}
if (col + 1 < thePad[0].Length && row - 2 >= 0)//valid
{
if (thePad[row - 2][col + 1].getNumber().Equals("*") == false &&
thePad[row - 2][col + 1].getNumber().Equals("#") == false)
{
found.Add(thePad[row - 2][col + 1]);
}
}
//Case 2. One vertical move each way follow by two horizontal moves each way
if (col - 2 >= 0 && row - 1 >= 0)
{
if (thePad[row - 1][col - 2].getNumber().Equals("*") == false &&
thePad[row - 1][col - 2].getNumber().Equals("#") == false)
{
found.Add(thePad[row - 1][col - 2]);
}
}
if (col - 2 >= 0 && row + 1 < thePad.Length)
{
if (thePad[row + 1][col - 2].getNumber().Equals("*") == false &&
thePad[row + 1][col - 2].getNumber().Equals("#") == false)
{
found.Add(thePad[row + 1][col - 2]);
}
}
if (col + 2 < thePad[0].Length && row - 1 >= 0)
{
if (thePad[row - 1][col + 2].getNumber().Equals("*") == false &&
thePad[row - 1][col + 2].getNumber().Equals("#") == false)
{
found.Add(thePad[row - 1][col + 2]);
}
}
if (col + 2 < thePad[0].Length && row + 1 < thePad.Length)
{
if (thePad[row + 1][col + 2].getNumber().Equals("*") == false &&
thePad[row + 1][col + 2].getNumber().Equals("#") == false)
{
found.Add(thePad[row + 1][col + 2]);
}
}
if (found.Count() > 0)
{
this.moves.Add(from, found);
this.movesFrom[from.getNumberAsNumber()] = found.Count();
}
else
{
this.moves.Add(from, null); //for example the Knight cannot move from 5 to anywhere
this.movesFrom[from.getNumberAsNumber()] = 0;
}
}
return(this.moves[from]);
}