/**
* End game method. Sets all spaces to not be clickable, resets the toolbar at the top of the
* window, clears the stack, and resets the controller so its ready for a new game.
*/
private void gameOver() {
gui.resetBackgrounds();
gui.resetToolbar();
moveStack = new Stack<Move>();
currentColor = WHITE;
currentPiece = null;
}
/** Method invoked at the beginning of the first game. Allows for players to select their names */
private void promptNames() {
if (gui.getTeamName(WHITE).equals("") || gui.getTeamName(BLACK).equals("")) {
String whiteName = "";
// ensure the name is not blank
while (whiteName.equals("")) {
whiteName = JOptionPane.showInputDialog("White team name:");
}
String blackName = "";
while (blackName.equals("")) {
blackName = JOptionPane.showInputDialog("Black team name:");
}
gui.setTeamNames(whiteName, blackName);
}
gui.updateMessage(currentColor);
}
/**
* Checks the board to see if it is in a check, checkmate, or stalemate configuration. If it is,
* it handles the situation properly.
*/
private void evaluateBoard() {
if (master.isCheckmate(currentColor)) {
gui.checkmateMessage(currentColor);
gameOver();
} else if (master.isStalemate(currentColor)) {
gui.stalemateMessage();
gameOver();
} else if (master.isCheck(currentColor) > 0) {
// only a check, game not over
gui.checkMessage(currentColor);
} else {
// display new turn
gui.updateMessage(currentColor);
}
}
/** Toggles the current color, and sets the side to that color */
public void switchSides() {
// alternate color
currentColor = 1 - currentColor;
gui.resetBackgrounds();
setCurrentSide(currentColor);
evaluateBoard();
}
/**
* Method called to handle the situation where a user selects one of his/her pieces to move.
*
* @param piece Piece selected on the board
*/
public void handlePickPiece(Piece piece) {
// set currentPiece and locate its position
currentPiece = piece;
char file = piece.getFile();
int rank = piece.getRank();
// low-light its space
light(gui.getSpaceAt(file, rank), false);
ArrayList<Pair<Character, Integer>> moveList = master.moveList(piece);
// highlight and enable legal moves
for (javafx.util.Pair<Character, Integer> move : moveList) {
int currRank = move.getValue();
char currFile = move.getKey();
light(gui.getSpaceAt(currFile, currRank), true);
}
}
/**
* Helper method for actionPerformed. Iterates through the spaces and determines which space was
* clicked on.
*
* @param event the click of a space
* @return a (file, rank) pair corresponding to the space
*/
public Pair<Character, Integer> findSource(ActionEvent event) {
for (int y = board.getYDimension(); y >= 1; y--) {
for (char x = 'a'; x < ('a' + board.getXDimension()); x++) {
if (event.getSource() == gui.getSpaceAt(x, y)) {
return new Pair<Character, Integer>(x, y);
}
}
}
return null;
}
/**
* Method called to handle the situation where a user is moving the currentPiece to a new location
*
* @param position New space on the board for a piece to move
*/
public void handleMove(Pair<Character, Integer> position) {
// place the current move onto the stack
Piece captured = board.at(position);
Pair<Character, Integer> oldPosition = currentPiece.getPosition();
moveStack.push(new Move(currentPiece, captured, oldPosition, position));
// make the move
master.move(currentPiece, position);
// refresh board after piece is moved
try {
gui.refreshBoard();
} catch (IOException e1) {
e1.printStackTrace();
}
if (!moveStack.empty()) {
// can undo now that there are moves in the stack
gui.setUndoEnabled(true);
}
// reset backgrounds and change sides
switchSides();
}
/**
* Takes the action listeners that were created in initializeListeners and adds them to the board
* using the GUI's add methods
*/
private void addListeners() {
gui.addSpaceListeners(spaceListener);
gui.addStandardGameListener(standardGameListener);
gui.addaAlternateGameListener(alternateGameListener);
gui.addUndoListener(undoListener);
gui.addForfeitListener(forfeitListener);
gui.addRestartListener(restartListener);
}
/**
* Makes it so all buttons are not clickable except for the spaces with pieces of a particular
* color
*
* @param color Pieces of this color can be clicked on
*/
public void setCurrentSide(int color) {
for (char file = 'a'; file < ('a' + board.getXDimension()); file++) {
for (int rank = 1; rank <= board.getYDimension(); rank++) {
Piece piece = board.at(file, rank);
JButton space = gui.getSpaceAt(file, rank);
// check if the space is empty, or if it matches the color parameter
if (piece != null && piece.getColor() == color) {
space.setEnabled(true);
} else {
space.setEnabled(false);
}
}
}
}
/**
* Method which creates a new GUI, and calls helper methods to set up the listeners for all the
* buttons on the board.
*
* @throws IOException
*/
public void init() throws IOException {
gui = new GUI(board);
setCurrentSide(WHITE);
JFrame f = new JFrame("Fighting Illini Chess");
f.add(gui.getGUI());
f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
// ensures the frame is the minimum size it needs to be
// in order display the components within it
f.pack();
// ensures the minimum size is enforced.
f.setMinimumSize(f.getSize());
f.setVisible(true);
// set up and add button action listeners
initializeListeners();
addListeners();
}
/** Entry method for resetting the backgrounds and setting the current side */
public void setBoard() {
gui.resetBackgrounds();
setCurrentSide(currentColor);
}