public GamePanel() {
setBackground(new Color(0, 0, 0));
setFocusable(true);
// setIgnoreRepaint(true);
addKeyListener(KeyManager.getDefault());
// 因为游戏图画根据窗体大小变化
// 当PANEL大小变化时需要重画.否则由小变大不会调用paint
addComponentListener(
new ComponentAdapter() {
public void componentResized(ComponentEvent e) {
if (m_game != null) m_game.refreshScreen();
}
});
// 当失去焦点,要清空键盘,否则可能导致只有按键无抬键
addFocusListener(
new FocusAdapter() {
public void focusLost(FocusEvent e) {
// System.out.println("lost Focus");
KeyManager.clearKeyState();
m_prompt = "PAUSED";
repaint();
if (m_game != null) m_game.pause();
}
public void focusGained(FocusEvent e) {
// System.out.println("lost Focus");
if (m_game != null) m_game.resume();
m_prompt = "LOADING...";
}
});
}
