//a function to take in the input and process it
private void RestartGame()
{
Console.Clear();
_cgame = null;
LogicDriver pOne = null, pTwo = null;
var playerWantsToGoFirst = false;
var newForm = new SplashScreen();
newForm.ShowDialog();
var result = newForm.Result;
//depending on the TypeOfMatch, the new CheckersGame must have appropriate logic drivers
if(result.TypeOfMatch == MatchType.PvP)
{
pOne = new PlayerLogicDriver(this);
pTwo = new PlayerLogicDriver(this);
CurrentGameState = GameState.SelectingPiece;
}
else if (result.TypeOfMatch == MatchType.PvC)
{
pOne = new PlayerLogicDriver(this);
pTwo = new ComputerLogicDriver(result.ComputerOneDifficulty);
CurrentGameState = GameState.WaitingForComputer;
const string humanPlayerText = "Player One";
var goFirstResult =
WinForms.MessageBox.Show(String.Format("Would you ({0}) like to go first?", humanPlayerText),
"Choice", WinForms.MessageBoxButtons.YesNo);
if (goFirstResult == WinForms.DialogResult.Yes)
{
playerWantsToGoFirst = true;
CurrentGameState = GameState.SelectingPiece;
}
}
else if (result.TypeOfMatch == MatchType.CvC)
{
pOne = new ComputerLogicDriver(result.ComputerOneDifficulty);
pTwo = new ComputerLogicDriver(result.ComputerTwoDifficulty);
}
_cgame = new CheckersGameDriver();
_cgame.Start(6, pOne,
pTwo,
new GuiDrawer(_spriteBatch, Content),
playerWantsToGoFirst);
}
public override TurnResult GetNextMove(CheckersGameDriver gameDriver)
{
if(_xnaCheckersDriver.CurrentGameState == GameState.WaitingForComputer)
_xnaCheckersDriver.CurrentGameState = GameState.SelectingPiece;
var result = TurnResult.NotDone;
//let the player continue doing what hes doing until he makes a move
// e.g. clicking a piece and then clicking a new place
if (_xnaCheckersDriver.CurrentGameState == GameState.SelectingPiece || _xnaCheckersDriver.CurrentGameState == GameState.MovingPiece)
{
if (InputManager.LeftMouseClick())
{
int mx = Mouse.GetState().X, my = Mouse.GetState().Y;
int ix = mx/XnaCheckersDriver.TileSize, iy = my/XnaCheckersDriver.TileSize;
if (_xnaCheckersDriver.IsWithinBoard(mx, my))
{
//see if mouse clicked on a piece
var piece = gameDriver.Board.Pieces.GetPieceAtPosition(ix, iy);
//see if piece is for the right player
if (piece != null && piece.Color == Color)
{
SetSelectedPiece(gameDriver, piece);
}
else
{
} //ignore the player trying to move a piece that is not his
}
else
{
} //ignore a click on the gameDriver that isnt on a piece
}
}
if (_xnaCheckersDriver.CurrentGameState == GameState.MovingPiece)
{
Debug.Assert(CurrentSelectedPiece != null);
int mx = Mouse.GetState().X, my = Mouse.GetState().Y;
int ix = mx/XnaCheckersDriver.TileSize, iy = my/XnaCheckersDriver.TileSize;
//user dragged it to a new slot
if (ix != CurrentSelectedPiece.X || iy != CurrentSelectedPiece.Y)
{
if (InputManager.LeftMouseClick()) //user clicked a new slot
{
try
{
//check if the clicked location matches one of the available moves for the currently selected piece
var clickedPiece = gameDriver.Board.Pieces.GetPieceAtPosition(ix, iy);
var appropriateMove =
_selectedAvailableMoves.FirstOrDefault(mr => mr.FinalPieceLocation.X == ix && mr.FinalPieceLocation.Y == iy);
var anyJumpsAvailable = _allAvailableMoves.Any(mr => mr.Type == MoveType.Jump);
if (clickedPiece != null && clickedPiece.Color == Color)
SetSelectedPiece(gameDriver, clickedPiece);
else if (appropriateMove != null)
{
if (!(anyJumpsAvailable && appropriateMove.Type == MoveType.Forward))
{
result = gameDriver.Board.MovePiece(appropriateMove, Color);
_xnaCheckersDriver.CurrentGameState = GameState.SelectingPiece;
CurrentSelectedPiece = null;
}
else
throw new InvalidMoveException(CurrentSelectedPiece, ix, iy);
}
}
catch (InvalidMoveException ex)
{
WinForms.MessageBox.Show(String.Format("Error: Invalid move (cannot move {0} to {1}).",
gameDriver.Board.TileBoard.GetNameForLocation(
ex.MovingPiece.X, ex.MovingPiece.Y),
gameDriver.Board.TileBoard.GetNameForLocation(
ex.AttemptedLocation)), "Error",
WinForms.MessageBoxButtons.OK);
CurrentSelectedPiece = null;
_xnaCheckersDriver.CurrentGameState = GameState.SelectingPiece;
}
}
}
}
return result;
}
//must be implemented by all logic driver's
// return true if it is done finding its next move
public override TurnResult GetNextMove(CheckersGameDriver gameDriver)
{
if (_logicThread == null)
{
//starts up a new thread if it isnt already running and tells it to run alpha-beta search
_finalResult = TurnResult.NotDone;
_logicThread = new Thread(() =>
{
ResetCounts();
AlphaBetaStartTime = DateTime.Now;
var maxDepth = 0;
var move = AlphaBeta(gameDriver.Board, ref maxDepth);
if (move != null)
{
var result = gameDriver.Board.MovePiece(move, Color);
_finalResult = result;
}
});
_logicThread.Start();
}
else
{
//if there is indeed a thread running, if it is done, then we are done and return the finalResult
if(!_logicThread.IsAlive)
{
_logicThread.Join();
_logicThread = null;
}
}
return _finalResult;
}
private void SetSelectedPiece(CheckersGameDriver gameDriver, CheckersPiece piece)
{
_xnaCheckersDriver.CurrentGameState = GameState.MovingPiece;
CurrentSelectedPiece = piece;
_allAvailableMoves = gameDriver.Board.GetAllAvailableMoves(Color);
_selectedAvailableMoves = gameDriver.Board.GetAvailableMovesForPiece(piece, false);
}
