/**
* Because there may be many AppContexts, and we can't be sure where this EmbeddedFrame is first
* created or shown, we can't automatically determine the correct KeyboardFocusManager to attach
* to as KeyEventDispatcher. Those who want to use the functionality of traversing out of the
* EmbeddedFrame must call this method on the Applet's AppContext. After that, all the changes can
* be handled automatically, including possible replacement of KeyboardFocusManager.
*/
public void registerListeners() {
if (appletKFM != null) {
removeTraversingOutListeners(appletKFM);
}
appletKFM = KeyboardFocusManager.getCurrentKeyboardFocusManager();
if (isVisible()) {
addTraversingOutListeners(appletKFM);
}
}
/*
* The method maps the list of the active windows to the window's AppContext,
* then the method registers ActiveWindowListener, GuiDisposedListener listeners;
* it executes the initilialization only once per AppContext.
*/
@SuppressWarnings("unchecked")
private static void initActiveWindowsTracking(Window w) {
AppContext appContext = AppContext.getAppContext();
synchronized (appContext) {
List<WWindowPeer> l = (List<WWindowPeer>) appContext.get(ACTIVE_WINDOWS_KEY);
if (l == null) {
l = new LinkedList<WWindowPeer>();
appContext.put(ACTIVE_WINDOWS_KEY, l);
appContext.addPropertyChangeListener(AppContext.GUI_DISPOSED, guiDisposedListener);
KeyboardFocusManager kfm = KeyboardFocusManager.getCurrentKeyboardFocusManager();
kfm.addPropertyChangeListener("activeWindow", activeWindowListener);
}
}
}
public void propertyChange(PropertyChangeEvent e) {
boolean isDisposed = (Boolean) e.getNewValue();
if (isDisposed != true) {
if (log.isLoggable(PlatformLogger.Level.FINE)) {
log.fine(" Assertion (newValue != true) failed for AppContext.GUI_DISPOSED ");
}
}
AppContext appContext = AppContext.getAppContext();
synchronized (appContext) {
appContext.remove(ACTIVE_WINDOWS_KEY);
appContext.removePropertyChangeListener(AppContext.GUI_DISPOSED, this);
KeyboardFocusManager kfm = KeyboardFocusManager.getCurrentKeyboardFocusManager();
kfm.removePropertyChangeListener("activeWindow", activeWindowListener);
}
}
/**
* Needed to track which KeyboardFocusManager is current. We want to avoid memory leaks, so when
* KFM stops being current, we remove ourselves as listeners.
*/
public void propertyChange(PropertyChangeEvent evt) {
// We don't handle any other properties. Skip it.
if (!evt.getPropertyName().equals("managingFocus")) {
return;
}
// We only do it if it stops being current. Technically, we should
// never get an event about KFM starting being current.
if (evt.getNewValue() == Boolean.TRUE) {
return;
}
// should be the same as appletKFM
removeTraversingOutListeners((KeyboardFocusManager) evt.getSource());
appletKFM = KeyboardFocusManager.getCurrentKeyboardFocusManager();
if (isVisible()) {
addTraversingOutListeners(appletKFM);
}
}
private void playerSetup() {
players = new ArrayList(twoPlayerRB.isSelected() ? 2 : 1);
if (mouseRB.isSelected()) {
MouseControlledPlayer p1 =
new MouseControlledPlayer(width / 2, height / 2, 3, true, this, 3, 1, width);
addMouseMotionListener(p1);
addMouseListener(p1);
players.add(p1);
} else {
KeyboardControlledPlayer p1 =
new KeyboardControlledPlayer(
width / 2,
height / 2,
3,
true,
this,
3,
KeyEvent.VK_W,
KeyEvent.VK_A,
KeyEvent.VK_S,
KeyEvent.VK_D,
keyboardSpeedS1.getValue(),
KeyEvent.VK_SPACE,
KeyEvent.VK_F,
1,
width);
KeyboardFocusManager.getCurrentKeyboardFocusManager().addKeyEventDispatcher(p1);
players.add(p1);
}
if (twoPlayerRB.isSelected()) {
if (mouseRB.isSelected()) {
KeyboardControlledPlayer p2 =
new KeyboardControlledPlayer(
width / 2,
height / 2,
3,
true,
this,
3,
KeyEvent.VK_W,
KeyEvent.VK_A,
KeyEvent.VK_S,
KeyEvent.VK_D,
keyboardSpeedS2.getValue(),
KeyEvent.VK_SPACE,
KeyEvent.VK_F,
2,
width);
KeyboardFocusManager.getCurrentKeyboardFocusManager().addKeyEventDispatcher(p2);
players.add(p2);
} else {
KeyboardControlledPlayer p2 =
new KeyboardControlledPlayer(
width / 2,
height / 2,
3,
true,
this,
3,
KeyEvent.VK_NUMPAD8,
KeyEvent.VK_NUMPAD4,
KeyEvent.VK_NUMPAD5,
KeyEvent.VK_NUMPAD6,
keyboardSpeedS2.getValue(),
KeyEvent.VK_NUMPAD0,
KeyEvent.VK_NUMPAD1,
2,
width);
KeyboardFocusManager.getCurrentKeyboardFocusManager().addKeyEventDispatcher(p2);
players.add(p2);
}
}
}
private void drawLayout(Graphics g) {
g.setColor(Color.blue);
g.drawRect(10, 10, width - 20, height - 20);
g.setColor(Color.red.brighter());
Iterator f = players.iterator();
int lifeDisplayPosition = 0;
while (f.hasNext()) {
Player h = (Player) f.next();
if (h.isActive()) {
lifeDisplayPosition++;
String lifeInformation = "Player " + lifeDisplayPosition + ": ";
for (int i = 0; i < h.getLives(); i++) {
lifeInformation += "\u2606";
}
g.drawString(lifeInformation, 20, lifeDisplayPosition * 40);
}
}
borders[2] = width - 20;
borders[3] = height - 20;
Iterator i = players.iterator();
Player p;
while (i.hasNext()) {
p = (Player) i.next();
if (p.isActive()
&& !countdownF
&& (p.getX() < borders[0]
|| p.getY() < borders[1]
|| p.getX() > borders[2]
|| p.getY() > borders[3])
&& (!p.getImmunity())) {
p.decLives(width / 2, height / 2);
p.setImmunity(true);
}
if (p.getLives() <= 0) {
if (p instanceof MouseControlledPlayer) {
MouseControlledPlayer m = (MouseControlledPlayer) p;
removeMouseListener(m);
removeMouseMotionListener(m);
} else if (p instanceof KeyboardControlledPlayer) {
KeyboardFocusManager.getCurrentKeyboardFocusManager()
.removeKeyEventDispatcher((KeyboardControlledPlayer) p);
}
i.remove();
for (int h = 0; h < 4; h++) {
if (deathLocation[h] == -1) {
deathLocation[h] = p.getX();
deathLocation[h + 1] = p.getY();
break;
}
}
}
}
if ((deathLocation[0] != -1) && (deathLocation[1] != -1)) {
g.drawLine(
deathLocation[0] - 15,
deathLocation[1] - 15,
deathLocation[0] + 15,
deathLocation[1] + 15);
g.drawLine(
deathLocation[0] + 15,
deathLocation[1] - 15,
deathLocation[0] - 15,
deathLocation[1] + 15);
}
if ((deathLocation[2] != -1) && (deathLocation[3] != -1)) {
g.drawLine(
deathLocation[2] - 15,
deathLocation[3] - 15,
deathLocation[2] + 15,
deathLocation[3] + 15);
g.drawLine(
deathLocation[2] + 15,
deathLocation[3] - 15,
deathLocation[2] - 15,
deathLocation[3] + 15);
}
if (!onePlayerAlive) {
Font old = g.getFont();
g.setFont(new Font("monospaced", Font.BOLD, 20));
g.setColor(Color.red.darker());
g.drawString("GAME OVER", width / 2 - 40, height / 2);
g.setFont(old);
g.setColor(Color.WHITE);
g.drawString("Score", width - 60, 25);
g.drawString(String.valueOf(score), width - 60, 40);
}
}