public void notifyMoveUndone(ImmutablePosition position) {
if (DEBUG) System.out.println("ChGame: move taken back in position");
if (!m_ignoreNotifications) {
m_cur = m_moves.goBack(m_cur, true);
}
}
private int getNumOfPliesToRoot(int node) {
int plies = 0;
while (node > 0) {
node = m_moves.goBack(node, true);
plies++;
}
return plies;
}
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;
}
}
private int[] getNodesToRoot(int node) {
int[] nodes;
int i = 0;
if (m_moves.getMove(node) != GameMoveModel.NO_MOVE) {
nodes = new int[getNumOfPliesToRoot(node) + 1];
nodes[0] = node;
i = 1;
} else {
nodes =
new int
[getNumOfPliesToRoot(
node)]; // if we stand on a line end, don't include node in nodes to root
i = 0;
}
for (; i < nodes.length; i++) {
node = m_moves.goBack(node, true);
nodes[i] = node;
}
return nodes;
}