public bool IsHit(Position position)
{
var x = OriginPosition.X;
var y = OriginPosition.Y;
for (var j = 0; j < Length; j++)
{
if (position.X == x && position.Y == y)
{
return true;
}
if (Direction == ShipDirection.Horizontal)
{
y++;
}
else
{
x++;
}
}
return false;
}
private CellStatus GetCell(Position position)
{
return (CellStatus)this._cells[position.X, position.Y];
}
public CellStatus ProcessShipHit(Position shotPosition)
{
if (IsCoordinateAlreadyUsed(shotPosition)) return CellStatus.Invalid;
var affectedShip = Ships.FirstOrDefault(ship => ship.IsHit(shotPosition));
if (affectedShip == null)
{
this.SetCell(shotPosition.X, shotPosition.Y, CellStatus.Miss);
return CellStatus.Miss;
}
affectedShip.Hit();
if (affectedShip.IsSunk())
{
this.SetCell(shotPosition.X, shotPosition.Y, CellStatus.Hit);
return CellStatus.Sunk;
}
else
{
this.SetCell(shotPosition.X, shotPosition.Y, CellStatus.Hit);
return CellStatus.Hit;
}
}
public bool IsCoordinateAlreadyUsed(Position shotPosition)
{
var cell = this.GetCell(shotPosition);
return cell == CellStatus.Hit || cell == CellStatus.Miss;
}
public void Play()
{
_userInterface.RenderMessage("Please input your shoot coordinates (x, y) in format [Letter][Number], e.g. B3");
_userInterface.RenderMessage("Board go from A to " + Position.GetLetterFromX(_board.Width + 64) + " and from 0 to " + (_board.Height - 1));
while (true)
{
var coordinates = _userInterface.GetUserInput();
if (!AreValidCoordinates(coordinates))
{
_lastPlay = LastPlay.Error;
_userInterface.RenderMessage(GetLastPlayMessage());
_userInterface.RenderMessage("Your coordinates are invalid. Please make sure is in the format [Letter][Number], e.g A7");
_userInterface.RenderMessage("Board go from A to " + Position.GetLetterFromX(_board.Width + 64) + " and from 0 to " + (_board.Height - 1));
continue;
}
var shootPosition = new Position(coordinates);
if (_board.IsCoordinateAlreadyUsed(shootPosition))
{
_lastPlay = LastPlay.AlreadyHit;
_userInterface.RenderMessage(GetLastPlayMessage());
continue;
}
var cellStatus = _board.ProcessShipHit(shootPosition);
switch (cellStatus)
{
case CellStatus.Hit:
this._lastPlay = LastPlay.Hit;
break;
case CellStatus.Sunk:
this._lastPlay = LastPlay.Sunk;
break;
case CellStatus.Miss:
this._lastPlay = LastPlay.Miss;
break;
case CellStatus.Invalid:
default:
this._lastPlay = LastPlay.Error;
break;
}
_userInterface.RenderMessage(GetLastPlayMessage());
if (_board.AreAllShipsSunk())
{
ProcessGameEnd();
break;
}
}
}