private static void CreateLocation(IArrayBoardObject board, int row, int col)
{
Position position = new Position(row, col);
ILocation location = BasicLocation.CreateLocation(position);
board.SetLocation(location, row, col);
}
public static ILocation GetLocation(IArrayBoardObject board, Position position)
{
int rowIndex = position.RowIndex;
int colIndex = position.ColumnIndex;
if (rowIndex < 0 || rowIndex >= board.Height || colIndex < 0 || colIndex >= board.Width)
{
throw new LocationOffBoardException(string.Format("Location {0} is not on a board of size ({1}, {2})", position.Id, board.Height, board.Width));
}
return(board.GetLocation(rowIndex, colIndex));
}
public static AttackResult Attack(IArrayBoardObject board, Position attackLocation)
{
ILocation targetLocation = GetLocationOnArrayBoard.GetLocation(board, attackLocation);
try
{
return(targetLocation.Attack());
}
catch (LocationAlreadyAttackedException)
{
throw new PositionAlreadyAttackedException(string.Format("Position {0} has already been attacked previously.", targetLocation.GetPositionId()));
}
}
public static bool IsGameOver(IArrayBoardObject board)
{
bool hasUnsunkenShip = false;
foreach (ILocation loc in board.Locations)
{
if (loc.IsOccupied() && loc.GetStatus() != AttackStatus.Hit)
{
hasUnsunkenShip = true;
break;
}
}
return(!hasUnsunkenShip); //if all battleships have been sunk, the game is over
}
public static void PositionShip(IArrayBoardObject board, IShip battleship, Position battleshipPosition, Orientation battleshipOrientation)
{
// collate positional information
Position shipEndPosition = battleship.CalculateEndPosition(battleshipPosition, battleshipOrientation);
// traverse in reverse order, to immediately throw an exception if the ship is not entirely on the board
List <ILocation> shipLocations = new List <ILocation>();
List <ILocation> occupiedLocations = new List <ILocation>();
try
{
for (int r = shipEndPosition.RowIndex; r >= battleshipPosition.RowIndex; r--)
{
for (int c = shipEndPosition.ColumnIndex; c >= battleshipPosition.ColumnIndex; c--)
{
ILocation foundLocation = GetLocationOnArrayBoard.GetLocation(board, new Position(r, c));
shipLocations.Add(foundLocation);
if (foundLocation.IsOccupied())
{
occupiedLocations.Add(foundLocation);
}
}
}
}
catch (LocationOffBoardException ex)
{
throw new ShipPlacedOffBoardException("Ship is not entirely on the board.", ex);
}
// if any of the Locations are already occupied, we cannot place the ship on the board
if (occupiedLocations.Count > 0)
{
ThrowOverlappingShipException(occupiedLocations);
}
// occupy each of the Locations where the ship belongs
foreach (ILocation locations in shipLocations)
{
locations.Occupy(battleship);
}
}
private ArrayBoard(int height, int width)
{
_board = CreateArrayBoardObject.Create(height, width);
}
