/// <summary>
/// Generate a new Matrix
/// </summary>
/// <returns>Returns the matrix</returns>
public static List<Tile> GenerateMatrix()
{
List<Tile> tilesMatrix = new List<Tile>();
int maxPosition = MatrixSize * MatrixSize - 1;
for (int tilePosition = 0; tilePosition < maxPosition; tilePosition++)
{
string tileLabel = (tilePosition + 1).ToString();
Tile currentTile = new Tile(tileLabel, tilePosition);
tilesMatrix.Add(currentTile);
}
Tile emptyTile = new Tile(string.Empty, maxPosition);
tilesMatrix.Add(emptyTile);
return tilesMatrix;
}
/// <summary>
/// Check if tile is a valid neighbour to empty tile.
/// </summary>
/// <param name="emptyTile">The empty tile in the matrix</param>
/// <param name="currentTile">The tile that is checked if it is a valid neighbour</param>
/// <returns>Returns boolean value</returns>
public static bool AreValidNeighbours(Tile emptyTile, Tile currentTile)
{
int tilesDistance = emptyTile.Position - currentTile.Position;
int tilesAbsoluteDistance = Math.Abs(tilesDistance);
bool areValidHorizontalNeighbours = false;
if (tilesAbsoluteDistance == HorizontalNeighbourDistance)
{
areValidHorizontalNeighbours = true;
if (((currentTile.Position + 1) % MatrixSize == 1 && tilesDistance == -1) || ((currentTile.Position + 1) % MatrixSize == 0 && tilesDistance == 1))
{
areValidHorizontalNeighbours = false;
}
}
bool areValidVerticalNeighbours = false;
if (tilesAbsoluteDistance == VerticalNeighbourDistance)
{
areValidVerticalNeighbours = true;
}
bool areValidNeigbours = areValidHorizontalNeighbours || areValidVerticalNeighbours;
return areValidNeigbours;
}