/// <summary>
/// Returns the direction of the valid move for the selected Square
/// </summary>
/// <param name="clickedSquare">Square to check for valid moves</param>
/// <returns></returns>
public static Direction determineValidMove(Square clickedSquare)
{
Direction validDirection;
//Check for valid moves
if (clickedSquare.SquareX == OpenX && clickedSquare.SquareY == OpenY + 1)
{
//Square can move Up
validDirection = Direction.Up;
}
else if (clickedSquare.SquareX == OpenX - 1 && clickedSquare.SquareY == OpenY)
{
//Square can move Right
validDirection = Direction.Right;
}
else if (clickedSquare.SquareX == OpenX && clickedSquare.SquareY == OpenY - 1)
{
//Square can move Down
validDirection = Direction.Down;
}
else if (clickedSquare.SquareX == OpenX + 1 && clickedSquare.SquareY == OpenY)
{
//Square can move Left
validDirection = Direction.Left;
}
else
{
//No valid move
validDirection = Direction.None;
}
//Return the valid move direction
return validDirection;
}
/// <summary>
/// Loads an nPuzzle game save and sets up the board
/// </summary>
/// <param name="filePath">File path to the save file</param>
public static void loadGame(string filePath)
{
//Create a new XML document and load the selected save file
XmlDocument loadFile = new XmlDocument();
loadFile.Load(filePath);
XmlNodeList settings = loadFile.SelectNodes("/nPuzzleGame/*");
//Iterate over each node in the XML file, and save it as the appropriate setting
foreach (XmlNode item in settings)
{
switch (item.Name)
{
//Save the Board Size properties
case "BoardSize":
Square.BoardLengthX = int.Parse(item.Attributes["width"].Value);
Square.BoardLengthY = int.Parse(item.Attributes["height"].Value);
Square.SquaresArray = new Square[Square.BoardLengthX, Square.BoardLengthX];
break;
//Save the position of the Open Square
case "OpenSquare":
Square.OpenX = int.Parse(item.Attributes["openX"].Value);
Square.OpenY = int.Parse(item.Attributes["openY"].Value);
break;
//Create the necessary squares for the board
case "SquaresArray":
foreach (XmlNode square in loadFile.SelectNodes("//SquaresArray/*"))
{
int x = int.Parse(square.Attributes["squareX"].Value);
int y = int.Parse(square.Attributes["squareY"].Value);
int value = int.Parse(square.Attributes["squareValue"].Value);
Square currentSquare = new Square(x, y, value);
}
break;
//Create the move counter
case "MoveCounter":
Square.MoveCounter = int.Parse(item.Attributes["counter"].Value);
break;
default:
break;
}
}
}
/// <summary>
/// Moves the clicked Square into the open space
/// </summary>
/// <param name="clickedSquare"></param>
public static void moveSquare(Square clickedSquare)
{
//Temporarily store the clicked Square's coordinates
int clickedX = clickedSquare.SquareX;
int clickedY = clickedSquare.SquareY;
//Update the array of Squares
SquaresArray[clickedX, clickedY] = null;
SquaresArray[OpenX, OpenY] = clickedSquare;
//Move the clicked Square to the open space
clickedSquare.SquareX = OpenX;
clickedSquare.SquareY = OpenY;
//Update the position of the open space
OpenX = clickedX;
OpenY = clickedY;
}
/// <summary>
/// Generates a new board of Squares
/// </summary>
/// <param name="boardWidth">Width of the board</param>
/// <param name="boardHeight">Height of the board</param>
private void generateSquares(int boardWidth, int boardHeight)
{
//Initialize the array of Squares that form the Game Board
Square.SquaresArray = new Square[boardWidth, boardHeight];
//Calculate the number of squares in the puzzle
int numberOfSquares = boardWidth * boardHeight - 1;
//Keep track of each square's value
int squareValueCounter = 0;
for (int y = 0; y < boardHeight; y++)
{
for (int x = 0; x < boardWidth; x++)
{
if (squareValueCounter++ == numberOfSquares)
{
//Store the location of the open square
Square.OpenX = x;
Square.OpenY = y;
return;
}
//Create the new square and add it to the game board
Square currentSquare = new Square(x, y, squareValueCounter);
}
}
}