swing如何覆盖窗口中的Java KeyListener?
因此,我正在用Java编写一个简单的格斗游戏,其中既包括一个标题屏幕JPanel,也包括一个游戏空间JPanel。在添加标题屏幕后,我遇到了一些让Playspace的KeyListener正常工作的问题。我试过其他SO帖子中的许多其他建议,到目前为止还没有看到任何效果。下面是我的游戏空间构造器,int模式是单人或多人模式,app是JFrame。应该注意的是,标题和播放屏幕都在同一个框架中
/** Constructor, sets frame and arrays up **/
public Playspace(int mode, Application app) {
// Sets up JPanel
super();
// Application variables
this.app = app;
HEIGHT = app.getHeight();
WIDTH = app.getWidth();
setLayout(null);
setLocation(0, 0);
setSize(WIDTH, HEIGHT);
backgroundColor = new Color(50, 50, 60);
backgroundColor.brighter();
setBackground(backgroundColor);
setVisible(true);
setFocusable(true);
requestFocusInWindow();
addKeyListener(new KeyListener() {
/** Keypress detection **/
@Override
public void keyPressed(KeyEvent e) {
int i = 0;
if (runnable[i]) {
// WASD Controls
if (e.getKeyCode() == KeyEvent.VK_A) {
players[i].setLeftPressed(true);
players[i].setDirection(-1);
}
if (e.getKeyCode() == KeyEvent.VK_D) {
players[i].setRightPressed(true);
players[i].setDirection(1);
}
if (e.getKeyCode() == KeyEvent.VK_S) {
players[i].setDownPressed(true);
}
if (e.getKeyCode() == KeyEvent.VK_W) {
players[i].setUpPressed(true);
players[i].setUpReleased(false);
}
if (e.getKeyCode() == KeyEvent.VK_SHIFT && e.getKeyLocation() == KeyEvent.KEY_LOCATION_LEFT
&& players[i].isShiftReleased()) {
players[i].setShiftPressed(true);
players[i].setShiftReleased(false);
}
}
i = 1;
if (runnable[i]) {
// ULDR Controls
if (e.getKeyCode() == KeyEvent.VK_LEFT) {
players[i].setLeftPressed(true);
players[i].setDirection(-1);
}
if (e.getKeyCode() == KeyEvent.VK_RIGHT) {
players[i].setRightPressed(true);
players[i].setDirection(1);
}
if (e.getKeyCode() == KeyEvent.VK_DOWN) {
players[i].setDownPressed(true);
}
if (e.getKeyCode() == KeyEvent.VK_UP) {
players[i].setUpPressed(true);
players[i].setUpReleased(false);
}
if (e.getKeyCode() == KeyEvent.VK_SHIFT && e.getKeyLocation() == KeyEvent.KEY_LOCATION_RIGHT
&& players[i].isShiftReleased()) {
players[i].setShiftPressed(true);
players[i].setShiftReleased(false);
}
}
}
/** Key Release detection **/
@Override
public void keyReleased(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_F11) {
developerMode = !developerMode;
}
int i = 0;
// WASD Controls
if (e.getKeyCode() == KeyEvent.VK_A) {
players[i].setLeftPressed(false);
}
if (e.getKeyCode() == KeyEvent.VK_S) {
players[i].setDownPressed(false);
}
if (e.getKeyCode() == KeyEvent.VK_D) {
players[i].setRightPressed(false);
}
if (e.getKeyCode() == KeyEvent.VK_W) {
players[i].setUpPressed(false);
players[i].setUpReleased(true);
}
if (e.getKeyCode() == KeyEvent.VK_SHIFT && e.getKeyLocation() == KeyEvent.KEY_LOCATION_LEFT) {
players[i].setShiftPressed(false);
players[i].setShiftReleased(true);
}
i = 1;
// ULDR Controls
if (e.getKeyCode() == KeyEvent.VK_UP) {
players[i].setUpPressed(false);
players[i].setUpReleased(true);
}
if (e.getKeyCode() == KeyEvent.VK_DOWN) {
players[i].setDownPressed(false);
}
if (e.getKeyCode() == KeyEvent.VK_LEFT) {
players[i].setLeftPressed(false);
}
if (e.getKeyCode() == KeyEvent.VK_RIGHT) {
players[i].setRightPressed(false);
}
if (e.getKeyCode() == KeyEvent.VK_SHIFT && e.getKeyLocation() == KeyEvent.KEY_LOCATION_RIGHT) {
players[i].setShiftPressed(false);
players[i].setShiftReleased(true);
}
}
/** We need this, but would rather forget it... **/
@Override
public void keyTyped(KeyEvent e) {
}
});
setVisible(true);
**从这里继续,但这是整个设置
感谢所有能提供帮助的人
还有一点需要注意的是,我曾尝试向KeyListener添加一些打印语句,但没有效果,侦听器从未被调用
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