// return true if the move is accepted, otherwise false
// and message indicate why
public bool PlayMove(GoMove move, ref GoMessageId message)
{
bool isValid = false;
if (m_currentTurn != Turns.Count)
{
throw new Exception("You can't play if the state of the game is not the most recent, you might want to create a variation though but it is not implemented yet!");
}
if (move.IsPass)
{
// this is a pass
// is it the second one?
if (Turns.Last().Move.Point == null)
{
// compute score
float score = 0.0f;
GoColor winner = GoColor.EMPTY;
float whiteScore = 0.0f;
float blackScore = 0.0f;
StrasCouting(out whiteScore, out blackScore);
if (whiteScore > blackScore)
{
winner = GoColor.WHITE;
score = whiteScore - blackScore;
}
else
{
winner = GoColor.BLACK;
score = blackScore - whiteScore;
}
// two pass the game is over
switch (GameRule)
{
case RulesType.normal:
OnGameIsOver(new GameResultEventArgs(winner, score, blackScore, whiteScore, false));
break;
case RulesType.capture_N:
int numberOfCapturesForWhite = GetNumberOfCapturedStonesFor(GoColor.WHITE);
int numberOfCapturesForBlack = GetNumberOfCapturedStonesFor(GoColor.BLACK);
GoColor moreCaptures = numberOfCapturesForWhite == numberOfCapturesForBlack
? GoColor.EMPTY
: numberOfCapturesForWhite > numberOfCapturesForBlack
? GoColor.WHITE
: GoColor.BLACK;
OnGameIsOver(new GameResultEventArgs(moreCaptures
, 0
, numberOfCapturesForBlack
, numberOfCapturesForWhite
, false));
break;
default:
throw new Exception("Error: unsupported rules type!");
}
}
GoTurn thisTurn = new GoTurn(move, m_currentTurn);
thisTurn.OldKoPoint = KoPoint;
// link the turns
if (GetLastTurn() != null)
{
GetLastTurn().NextTurns.Add(thisTurn);
thisTurn.PreviousTurn = GetLastTurn();
}
// add to the list of turns
Turns.Add(thisTurn);
m_currentTurn++;
isValid = true;
}
else if (move.Color == m_colorToMove)
{
// is it the ko point?
if (KoPoint != null && move.Point == KoPoint)
{
message = GoMessageId.KO_THREAT_FIRST;
isValid = false;
}
else
{
// is it on an empty space?
if (Board.isPointFree(move.Point))
{
// is it capturing something?
List <GoPoint> captured = Board.WillCapture(move);
if (captured.Count > 0)
{
GoTurn thisTurn = new GoTurn(move, m_currentTurn);
thisTurn.Killed = captured;
thisTurn.OldKoPoint = KoPoint;
// link the turns
if (GetLastTurn() != null)
{
GetLastTurn().NextTurns.Add(thisTurn);
thisTurn.PreviousTurn = GetLastTurn();
}
// add to the list of turns
Turns.Add(thisTurn);
m_currentTurn++;
isValid = true;
}
else
{
// otherwise is it a suicide?
if (Board.IsSuicide(move))
{
message = GoMessageId.SUICIDE_MOVE;
isValid = false;
}
else
{
// play the move increment turn counting
GoTurn thisTurn = new GoTurn(move, m_currentTurn);
thisTurn.OldKoPoint = KoPoint;
// link the turns
if (GetLastTurn() != null)
{
GetLastTurn().NextTurns.Add(thisTurn);
thisTurn.PreviousTurn = GetLastTurn();
}
// add to the list of turns
Turns.Add(thisTurn);
m_currentTurn++;
isValid = true;
}
}
}
else
{
message = GoMessageId.ALREADY_A_STONE;
isValid = false;
}
}
}
else
{
// WARNING your move will be ignored
message = GoMessageId.NOT_COLOR_TURN;
isValid = false;
}
if (isValid)
{
Board.Execute(Turns.Last());
KoPoint = null;
// did it created a ko?
if (GetLastTurn().Killed != null && GetLastTurn().Killed.Count == 1)
{
// test if the captured position would be a suicide for the other color
GoMove suicideTest = new GoMove(
Helper.GetOppositeColor(move.Color),
GetLastTurn().Killed[0],
false);
if (Board.IsSuicide(suicideTest))
{
// but if it capture exactly one stone back it is a ko
List <GoPoint> koTest = Board.WillCapture(suicideTest);
if (koTest.Count == 1)
{
KoPoint = suicideTest.Point;
}
}
}
else
{
// otherwise reinitialise the ko to null
KoPoint = null;
}
// if it capture and we are playing the capture 5 stones rules
// we need to check if the game is over
if (GameRule == RulesType.capture_N && GetLastTurn().Killed != null && GetLastTurn().Killed.Count > 0)
{
if (GetNumberOfCapturedStonesFor(m_colorToMove) >= NumberOfStonesToCapture)
{
OnGameIsOver(new GameResultEventArgs(m_colorToMove
, 0
, GetNumberOfCapturedStonesFor(GoColor.BLACK)
, GetNumberOfCapturedStonesFor(GoColor.WHITE)
, false));
}
}
Clock.NotifyMovePlayed(m_colorToMove);
m_colorToMove = Helper.GetOppositeColor(m_colorToMove);
}
return(isValid);
} // end of PlayMove
// return true if the move is accepted, otherwise false
// and message indicate why
public bool PlayMove(GoMove move, ref GoMessageId message)
{
bool isValid = false;
if (m_currentTurn != Turns.Count)
{
throw new Exception("You can't play if the state of the game is not the most recent, you might want to create a variation though but it is not implemented yet!");
}
if(move.IsPass)
{
// this is a pass
// is it the second one?
if (Turns.Last().Move.Point == null)
{
// compute score
float score = 0.0f;
GoColor winner = GoColor.EMPTY;
float whiteScore = 0.0f;
float blackScore = 0.0f;
StrasCouting(out whiteScore, out blackScore);
if (whiteScore > blackScore)
{
winner = GoColor.WHITE;
score = whiteScore - blackScore;
}
else
{
winner = GoColor.BLACK;
score = blackScore - whiteScore;
}
// two pass the game is over
switch (GameRule)
{
case RulesType.normal:
OnGameIsOver(new GameResultEventArgs(winner, score, blackScore, whiteScore, false));
break;
case RulesType.capture_N:
int numberOfCapturesForWhite = GetNumberOfCapturedStonesFor(GoColor.WHITE);
int numberOfCapturesForBlack = GetNumberOfCapturedStonesFor(GoColor.BLACK);
GoColor moreCaptures = numberOfCapturesForWhite == numberOfCapturesForBlack
? GoColor.EMPTY
: numberOfCapturesForWhite > numberOfCapturesForBlack
? GoColor.WHITE
: GoColor.BLACK;
OnGameIsOver(new GameResultEventArgs(moreCaptures
, 0
, numberOfCapturesForBlack
, numberOfCapturesForWhite
, false));
break;
default:
throw new Exception("Error: unsupported rules type!");
}
}
GoTurn thisTurn = new GoTurn(move, m_currentTurn);
thisTurn.OldKoPoint = KoPoint;
// link the turns
if (GetLastTurn() != null)
{
GetLastTurn().NextTurns.Add(thisTurn);
thisTurn.PreviousTurn = GetLastTurn();
}
// add to the list of turns
Turns.Add(thisTurn);
m_currentTurn++;
isValid = true;
}
else if(move.Color == m_colorToMove)
{
// is it the ko point?
if (KoPoint != null && move.Point == KoPoint)
{
message = GoMessageId.KO_THREAT_FIRST;
isValid = false;
}
else
{
// is it on an empty space?
if (Board.isPointFree(move.Point))
{
// is it capturing something?
List<GoPoint> captured = Board.WillCapture(move);
if (captured.Count > 0)
{
GoTurn thisTurn = new GoTurn(move, m_currentTurn);
thisTurn.Killed = captured;
thisTurn.OldKoPoint = KoPoint;
// link the turns
if (GetLastTurn() != null)
{
GetLastTurn().NextTurns.Add(thisTurn);
thisTurn.PreviousTurn = GetLastTurn();
}
// add to the list of turns
Turns.Add(thisTurn);
m_currentTurn++;
isValid = true;
}
else
{
// otherwise is it a suicide?
if (Board.IsSuicide(move))
{
message = GoMessageId.SUICIDE_MOVE;
isValid = false;
}
else
{
// play the move increment turn counting
GoTurn thisTurn = new GoTurn(move, m_currentTurn);
thisTurn.OldKoPoint = KoPoint;
// link the turns
if (GetLastTurn() != null )
{
GetLastTurn().NextTurns.Add(thisTurn);
thisTurn.PreviousTurn = GetLastTurn();
}
// add to the list of turns
Turns.Add(thisTurn);
m_currentTurn++;
isValid = true;
}
}
}
else
{
message = GoMessageId.ALREADY_A_STONE;
isValid = false;
}
}
}
else
{
// WARNING your move will be ignored
message = GoMessageId.NOT_COLOR_TURN;
isValid = false;
}
if (isValid)
{
Board.Execute(Turns.Last());
KoPoint = null;
// did it created a ko?
if (GetLastTurn().Killed != null && GetLastTurn().Killed.Count == 1)
{
// test if the captured position would be a suicide for the other color
GoMove suicideTest = new GoMove(
Helper.GetOppositeColor(move.Color),
GetLastTurn().Killed[0],
false);
if( Board.IsSuicide(suicideTest))
{
// but if it capture exactly one stone back it is a ko
List<GoPoint> koTest = Board.WillCapture(suicideTest);
if (koTest.Count == 1)
{
KoPoint = suicideTest.Point;
}
}
}
else
{
// otherwise reinitialise the ko to null
KoPoint = null;
}
// if it capture and we are playing the capture 5 stones rules
// we need to check if the game is over
if (GameRule == RulesType.capture_N && GetLastTurn().Killed != null && GetLastTurn().Killed.Count > 0)
{
if (GetNumberOfCapturedStonesFor(m_colorToMove) >= NumberOfStonesToCapture)
{
OnGameIsOver(new GameResultEventArgs(m_colorToMove
, 0
, GetNumberOfCapturedStonesFor(GoColor.BLACK)
, GetNumberOfCapturedStonesFor(GoColor.WHITE)
, false));
}
}
Clock.NotifyMovePlayed(m_colorToMove);
m_colorToMove = Helper.GetOppositeColor(m_colorToMove);
}
return isValid;
}