private static List<Tile> GenerateNeighbourTilesList(Tile freeTile, Tile tile, List<Tile> neighbourTiles)
{
bool areValidNeighbourTiles = AreValidNeighbourTiles(freeTile, tile);
if (areValidNeighbourTiles)
{
neighbourTiles.Add(tile);
}
return neighbourTiles;
}
private static bool AreValidNeighbourTiles(Tile freeTile, Tile tile)
{
int tilesDistance = freeTile.Position - tile.Position;
int tilesAbsoluteDistance = Math.Abs(tilesDistance);
bool isValidHorizontalNeighbour =
((tilesAbsoluteDistance == HORIZONTAL_NEIGHBOUR_TILE) && !(((tile.Position + 1) % MATRIX_SIZE == 1 && tilesDistance == -1) || ((tile.Position + 1) % MATRIX_SIZE == 0 && tilesDistance == 1)));
bool isValidVerticalNeighbour = (tilesAbsoluteDistance == VERTICAL_NEIGHBOUR_TILE);
bool validNeigbour = isValidHorizontalNeighbour || isValidVerticalNeighbour;
return validNeigbour;
}
private static Tile DetermineFreeTile(List<Tile> resultMatrix)
{
Tile freeTile = new Tile();
foreach (Tile tile in resultMatrix)
{
if (tile.Label == string.Empty)
{
freeTile = tile;
}
}
return freeTile;
}
public static List<Tile> GenerateMatrix()
{
List<Tile> tiles = new List<Tile>();
for (int index = 0; index < 15; index++)
{
String tileName = (index + 1).ToString();
Tile tempTile = new Tile(tileName, index);
tiles.Add(tempTile);
}
Tile emptyTile = new Tile(string.Empty, 15);
tiles.Add(emptyTile);
return tiles;
}
private static bool TilePositionValidation(List<Tile> tiles, Tile freeTile, Tile tile)
{
bool areValidNeighbourTiles = AreValidNeighbourTiles(freeTile, tile);
return areValidNeighbourTiles;
}