public void gotoPosition(ImmutablePosition pos, boolean silent) {
if (m_position.equals(pos)) return; // =====>
int curNode = getCurNode();
gotoStart(true);
do {
if (m_position.equals(pos)) {
int posNode = getCurNode();
gotoNode(curNode, true);
gotoNode(posNode, silent);
return; // =====>
}
} while (goForward(true));
}
public Move getNextMove(int whichLine) {
short shortMove = m_moves.getMove(m_moves.goForward(m_cur, whichLine));
if (shortMove == GameMoveModel.NO_MOVE) return null; // =====>
try {
m_position.setNotifyListeners(false);
m_position.doMove(shortMove);
// ChMove move = m_position.getLastMove(shortMove);
Move move = m_position.getLastMove();
m_position.undoMove();
m_position.setNotifyListeners(true);
return move;
} catch (IllegalMoveException ex) {
ex.printStackTrace();
return null;
}
}
private boolean goBackInLine(boolean silent) {
if (DEBUG) System.out.println("goBackInLine");
int index = m_moves.goBack(m_cur, false);
if (index != -1) {
m_cur =
index; // needs to be set before undoing the move to allow listeners to check for curNode
m_ignoreNotifications = true;
if (silent) m_position.setNotifyListeners(false);
m_position.undoMove();
if (silent) m_position.setNotifyListeners(true);
m_ignoreNotifications = false;
return true;
} else {
return false;
}
}
private boolean goBack(boolean silent) {
if (DEBUG) System.out.println("goBack");
int index = m_moves.goBack(m_cur, true);
if (index != -1) {
// if (m_position.canUndoMove()) { // do not rely on position since in silent mode it
// is not updated
// m_cur = m_moves.goBack(m_cur, true);
m_cur = index;
m_ignoreNotifications = true;
if (silent) m_position.setNotifyListeners(false);
m_position.undoMove();
if (silent) m_position.setNotifyListeners(true);
m_ignoreNotifications = false;
return true;
} else {
return false;
}
}
public Move[] getMainLine() {
int num = 0;
int index = m_cur;
while (m_moves.hasNextMove(index)) {
index = m_moves.goForward(index);
num++;
}
Move[] moves = new Move[num];
for (int i = 0; i < num; i++) {
moves[i] = goForwardAndGetMove(true);
}
m_position.setNotifyListeners(false);
for (int i = 0; i < moves.length; i++) m_position.undoMove();
m_position.setNotifyListeners(true);
return moves;
}
public Move[] getNextMoves() {
m_position.setNotifyListeners(false);
Move[] moves = new Move[m_moves.getNumOfNextMoves(m_cur)];
for (int i = 0; i < moves.length; i++) {
short move = m_moves.getMove(m_moves.goForward(m_cur, i));
try {
m_position.doMove(move);
// moves[i] = m_position.getLastMove(move);
moves[i] = m_position.getLastMove();
m_position.undoMove();
} catch (IllegalMoveException ex) {
m_moves.write(System.out);
System.out.println("cur = " + m_cur + " move=" + GameMoveModel.valueToString(move));
ex.printStackTrace();
}
}
m_position.setNotifyListeners(true);
return moves;
}
private void setModel(GameModel gameModel) {
m_model = gameModel;
m_header = gameModel.getHeaderModel();
m_moves = gameModel.getMoveModel();
String fen = m_header.getTag(PGN.TAG_FEN);
if (fen != null) {
setPosition(new Position(fen, false));
} else {
setPosition(Position.createInitialPosition());
}
}
private boolean goForward(int whichLine, boolean silent) {
if (DEBUG) System.out.println("goForward " + whichLine);
int index = m_moves.goForward(m_cur, whichLine);
short shortMove = m_moves.getMove(index);
if (DEBUG) System.out.println(" move = " + Move.getString(shortMove));
if (shortMove != GameMoveModel.NO_MOVE) {
try {
m_cur = index;
m_ignoreNotifications = true;
if (silent) m_position.setNotifyListeners(false);
m_position.doMove(shortMove);
if (silent) m_position.setNotifyListeners(true);
m_ignoreNotifications = false;
return true;
} catch (IllegalMoveException ex) {
ex.printStackTrace();
}
} else {
// new Exception("Forward at end of line").printStackTrace();
}
return false;
}
/**
* Returns whether the given position occurs in the main line of this game.
*
* @param position the position to look for, must not be null
* @return whether the given position occurs in the main line of this game
*/
public boolean containsPosition(ImmutablePosition position) {
boolean res = false;
int index = getCurNode();
gotoStart(true);
for (; ; ) {
if (m_position.getHashCode() == position.getHashCode()) {
res = true;
break;
}
if (!hasNextMove()) break;
goForward(true);
}
gotoNode(index, true);
return res;
}
/**
* Method to traverse the game in postfix order (first the lines, then the main line). This method
* is used by {@link chesspresso.pgn.PGN}.
*
* @param listener the listener to receive event when arriving at nodes
* @param withLines whether or not to include lines of the current main line.
*/
public void traverse(GameListener listener, boolean withLines) {
int index = getCurNode();
gotoStart(true);
traverse(listener, withLines, m_position.getPlyNumber(), 0);
gotoNode(index, true);
}
public Move getLastMove() {
return m_position.getLastMove();
}
public int getNextMoveNumber() {
return (m_position.getPlyNumber() + 2) / 2;
}
public int getCurrentMoveNumber() {
return (m_position.getPlyNumber() + 1) / 2;
}
public int getCurrentPly() {
return m_position.getPlyNumber();
}
private void setPosition(Position position) {
m_position = position;
m_position.addPositionChangeListener(this);
m_cur = 0;
}