/// <summary>
/// Checks the values for a tile at a specific tileGridPosition.
/// If one value doesn't match the value within the tiles name false is returned,
/// while one null-value of the tileValueGrid values is allowed.
/// </summary>
/// <param name="tile">The tile whose values should be checked.</param>
/// <param name="tileGridPosition">The tiles position within the tileGrid.</param>
/// <returns>True, if values matching (one tileValueGrid value can be null), false if not.</returns>
private bool CheckValueGridAtTileGridPosition(TriominoTile tile, Point tileGridPosition)
{
List<int?> valuesToCheck = this.GetValueGridValuesFromNameGridPositions(tileGridPosition, tile.Orientation.ToArrayTileOrientation());
// if more than two values are null, this triomino tile
// isn't added adjacent to another tile (except for the first tile).
if (this.NumbTilesOnBoard > 0 && valuesToCheck.Where(v => !v.HasValue).Count() > 1)
{
return false;
}
string[] nameParts = tile.GetArrayName().Split('-');
for (int i = 0; i < valuesToCheck.Count; i++)
{
int intValue = int.Parse(nameParts[i]);
if (valuesToCheck[i].HasValue && valuesToCheck[i] != intValue)
{
return false;
}
}
return true;
}
//public bool TryAddTile(TriominoTile tile, string otherName, TileFace? otherFace)
public bool TryAddTile(string tileName, string otherName, TileFace? tileFace, TileFace? otherFace)
{
// TODO: CanPlacetileOnGameBoard an diesen Funktionskopf anpassen und hier aufrufen.
TriominoTile.EnsureName(tileName);
TriominoTile tile = null;
if (this.NumbTilesOnBoard == 0)
{
tile = new TriominoTile(tileName, TileOrientation.Straight);
return this.AddTile(tile, new Point(23, 23));
}
if (tileFace == null || otherFace == null || otherName == null || otherName == string.Empty)
{
throw new ArgumentException("Values for Parameter 'otherName' and 'otherFace' can't be null, if it isn't the first turn.");
}
Point otherTileGridCoordinates = this.GetTileCoordsByName(otherName);
TileOrientation tileOrientationOnGameBoard = this.GetTileOrienationFromOtherTileOrientationAndFaces(this.tileGrid[otherTileGridCoordinates.Y, otherTileGridCoordinates.X].Orientation, otherFace.Value, tileFace.Value);
tile = new TriominoTile(tileName, tileOrientationOnGameBoard);
Point possibleNewGridCoordinates = this.GetTileGridPositionFromOtherTilePositionAndFace(otherTileGridCoordinates, otherFace.Value);
return this.AddTile(tile, possibleNewGridCoordinates);
}
private bool AddTile(TriominoTile tile, Point tileGridPosition)
{
if (this.tileGrid[tileGridPosition.Y, tileGridPosition.X] != null)
{
throw new ArgumentException($"Cannot add tile {tile.Name} at position(x,y): ({tileGridPosition.X}, {tileGridPosition.Y}). Place is taken by tile: '{this.tileGrid[tileGridPosition.Y, tileGridPosition.X].Name}'");
}
if (!this.CheckValueGridAtTileGridPosition(tile, tileGridPosition))
{
return false;
}
this.tileGrid[tileGridPosition.Y, tileGridPosition.X] = tile;
this.AddValuesToValueGrid(tile.GetArrayName(), tileGridPosition, tile.Orientation.ToArrayTileOrientation());
return true;
}
/// <summary>
/// Checks if a tile can placed on the GameBoard, based on the tiles orientation,
/// and another tile next to which the new tile should be placed
/// </summary>
/// <param name="tile">The tile which should be placed</param>
/// <param name="otherName">The name of the other tile.</param>
/// <param name="otherFace">The face of the other tile at which the new tile should be placed.</param>
/// <returns>True, if the new tile can be placed, false if not.</returns>
public bool CanPlaceTileOnGameBoard(TriominoTile tile, string otherName, TileFace? otherFace)
{
// if it's the first tile it can always be placed.
if (this.NumbTilesOnBoard == 0)
{
return true;
}
// otherFace and otherName can only be null if it's the first tile
if (otherFace == null || otherName == null || otherName == string.Empty)
{
return false;
}
Point otherTileGridCoordinates = this.GetTileCoordsByName(otherName);
Point possibleNewGridCoordinates = this.GetTileGridPositionFromOtherTilePositionAndFace(otherTileGridCoordinates, otherFace.Value);
return this.CheckValueGridAtTileGridPosition(tile, possibleNewGridCoordinates);
}