/// <summary>
/// Returns all of the squares immediately surrounding the root square
/// </summary>
/// <param name="rootPosition"></param>
/// <param name="boardData"></param>
/// <returns></returns>
internal static List <Square> SurroundingSquares(DataBoardPosition rootPosition, BoardData boardData)
{
// List of squares we will be returning; clockwise starting from upper-left
List <Square> squares = new List <Square>
{
GetSquareForCoordinates(rootPosition.File - 1, rootPosition.Rank + 1, boardData),
GetSquareForCoordinates(rootPosition.File, rootPosition.Rank + 1, boardData),
GetSquareForCoordinates(rootPosition.File + 1, rootPosition.Rank + 1, boardData),
GetSquareForCoordinates(rootPosition.File + 1, rootPosition.Rank, boardData),
GetSquareForCoordinates(rootPosition.File + 1, rootPosition.Rank - 1, boardData),
GetSquareForCoordinates(rootPosition.File, rootPosition.Rank - 1, boardData),
GetSquareForCoordinates(rootPosition.File - 1, rootPosition.Rank - 1, boardData),
GetSquareForCoordinates(rootPosition.File - 1, rootPosition.Rank, boardData)
};
return(squares);
}
/// <summary>
/// Returns all squares in the same diagonals as the rootPosition
/// </summary>
/// <param name="rootPosition"></param>
/// <param name="boardData"></param>
/// <returns></returns>
internal static List <Square> DiagonalSquares(DataBoardPosition rootPosition, BoardData boardData)
{
// List of squares we will be returning;
List <Square> squares = new List <Square>();
// Lower-left diagonal
DataBoardPosition runningPosition = rootPosition;
bool hasReachedEdge = runningPosition.File <= 0 || runningPosition.Rank <= 0;
while (!hasReachedEdge)
{
runningPosition.File--;
runningPosition.Rank--;
if (runningPosition.File <= 0 || runningPosition.Rank <= 0)
{
hasReachedEdge = true;
}
squares.Add(GetSquareForCoordinates(runningPosition.File, runningPosition.Rank, boardData));
}
// Upper-right diagonal
runningPosition = rootPosition;
hasReachedEdge = runningPosition.File >= boardData.Dimensions.Item1 ||
runningPosition.Rank >= boardData.Dimensions.Item2;
while (!hasReachedEdge)
{
runningPosition.File++;
runningPosition.Rank++;
if (runningPosition.File >= boardData.Dimensions.Item1 || runningPosition.Rank >= boardData.Dimensions.Item2)
{
hasReachedEdge = true;
}
squares.Add(GetSquareForCoordinates(runningPosition.File, runningPosition.Rank, boardData));
}
// Lower-right diagonal
runningPosition = rootPosition;
hasReachedEdge = runningPosition.File >= boardData.Dimensions.Item1 || runningPosition.Rank <= 0;
while (!hasReachedEdge)
{
runningPosition.File++;
runningPosition.Rank--;
if (runningPosition.File >= boardData.Dimensions.Item1 || runningPosition.Rank <= 0)
{
hasReachedEdge = true;
}
squares.Add(GetSquareForCoordinates(runningPosition.File, runningPosition.Rank, boardData));
}
// Upper-left diagonal
runningPosition = rootPosition;
hasReachedEdge = runningPosition.File <= 0 || runningPosition.Rank >= boardData.Dimensions.Item2;
while (!hasReachedEdge)
{
runningPosition.File--;
runningPosition.Rank++;
if (runningPosition.File <= 0 || runningPosition.Rank >= boardData.Dimensions.Item2)
{
hasReachedEdge = true;
}
squares.Add(GetSquareForCoordinates(runningPosition.File, runningPosition.Rank, boardData));
}
return(squares);
}
