/// <summary>
/// Gets a reference to a neighbouring Cell (if any) in the specified direction.
/// The direction will be automatically rounded to the nearest Cell.
///
/// If there is a wall in that direction, then null is returned.
/// </summary>
/// <param name="direction"> the direction in which to grab the neighbouring Cell. </param>
/// <returns> the neighbouring Cell in the specified direction. </returns>
public Cell GetAdjacentCell(Direction direction)
{
double radians = direction.GetRadians();
int relativeRow = -(int)Math.Round(Math.Cos(radians));
int relativeColumn = (int)Math.Round(Math.Sin(radians));
int targetRow = position.Row + relativeRow;
int targetColumn = position.Column + relativeColumn;
Cell target = pigWorld.GetCell(new Position(targetRow, targetColumn));
if (target == null)
{
return(null);
}
// If there's a wall between this cell and the target cell ...
if (pigWorld.IsWallBetweenCells(this, target))
{
return(null);
}
return(target);
}
