public bool PlaceShip(Ship ship)
{
var decks = (int)ship.Type;
var possibleCoordinates = new Coordinate[decks];
var startingPoint = Coordinate.Copy(ship.StartingPoint);
for (var i = 0; i < decks; i++)
{
//try to validate
if (Field.ValidateCoordinate(startingPoint))
{
//proximity check
if (Field.ProximityCheck(startingPoint)) return false;
possibleCoordinates[i] = Coordinate.Copy(startingPoint);
if (ship.Orientation == ShipOrientation.Vertical)
startingPoint.MoveDown();
else
startingPoint.MoveRight();
}
else
return false;
}
//if everything went fine, persist possibleCoordinates on map
possibleCoordinates.ForEach(c => Field[c] = new Cell { State = CellState.ShipDeck, Coordinate = c, ShipId = ship.Id });
//add ship to collection
_ships.Add(ship);
return true;
}
public IEnumerable<Coordinate> GetSurroundedCoordinatesOfTheShip(Ship ship)
{
var result = new List<Coordinate>();
var shipCoordinates = ship.GetCoordinates();
foreach (var shipCoord in shipCoordinates)
{
var mutableCoordinate = Coordinate.Copy(shipCoord);
if (Field.ValidateCoordinate(mutableCoordinate.MoveDown())) result.Add(Coordinate.Copy(mutableCoordinate));
if (Field.ValidateCoordinate(mutableCoordinate.MoveLeft())) result.Add(Coordinate.Copy(mutableCoordinate));
if (Field.ValidateCoordinate(mutableCoordinate.MoveUp())) result.Add(Coordinate.Copy(mutableCoordinate));
if (Field.ValidateCoordinate(mutableCoordinate.MoveUp())) result.Add(Coordinate.Copy(mutableCoordinate));
if (Field.ValidateCoordinate(mutableCoordinate.MoveRight())) result.Add(Coordinate.Copy(mutableCoordinate));
if (Field.ValidateCoordinate(mutableCoordinate.MoveRight())) result.Add(Coordinate.Copy(mutableCoordinate));
if (Field.ValidateCoordinate(mutableCoordinate.MoveDown())) result.Add(Coordinate.Copy(mutableCoordinate));
if (Field.ValidateCoordinate(mutableCoordinate.MoveDown())) result.Add(Coordinate.Copy(mutableCoordinate));
}
return result.Where(c => !shipCoordinates.Contains(c)).Distinct().ToList();
}