游戏内容：单词由窗口上部落下，玩家在单词掉落到窗口底部前，输入该单词，输入正确后，单词消失。这只是个简单的示例，没有做成绩统计等相关功能。
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截图：
package fun.dwords;
import ...;
public class DWords extends JFrame {
String[] words = { "good", "slow", "goods", "goodbye", "bye", "byte",
"bits", "sister", "monkey", "word", "world", "left", "leave" };
JPanel panel;
Image img = new ImageIcon("background/jessica_alba.jpg").getImage();
public DWords() {
panel = new JPanel() {
@Override
public void paint(Graphics g) {
g.drawImage(img, 0, 0, null);
super.paintChildren(g);
}
};
add(panel);
panel.setLayout(null);
JPanel btnPanel = new JPanel();
add(btnPanel, BorderLayout.SOUTH);
JButton btnStart = new JButton("Start");
btnPanel.add(btnStart);
btnStart.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
Thread thd = new Thread() {
public void run() {
downWords();
}
};
thd.start();
DWords.this.requestFocus();
}
});
setDefaultCloseOperation(EXIT_ON_CLOSE);
setSize(500, 400);
setTitle("word word down...");
setVisible(true);
this.requestFocus();
}
public void resetWords() {
Component[] lb = panel.getComponents();
for (int i = 0; i < lb.length; i++) {
WordLabel wl = (WordLabel) lb[i];
wl.reset();
}
}
public void downWords() {
Random rand = new Random(System.currentTimeMillis());
for (int i = 0; i < words.length; i++) {
WordLabel wl = new WordLabel(words[i]);
wl.setForeground(new Color(255, 0, 0));
panel.add(wl);
wl.setBounds(rand.nextInt(panel.getWidth() - 50), 0, 120, 25);
panel.validate();
addKeyListener(wl);
Thread thd = new Thread(wl);
thd.start();
try {
Thread.sleep(2000);
} catch (InterruptedException ex) {
}
}
}
static String fmtHeader = "<html><span style=\"color:red\">";
static String fmtMiddle = "</span><span style=\"color:black;\">";
static String fmtTail = "</span></html>";
private class WordLabel extends JLabel implements Runnable, KeyListener {
volatile boolean removed = false;
volatile String fmtWord;
String word;
int idx = 0;
public WordLabel(String word) {
super(fmtHeader + fmtMiddle + word + fmtTail);
this.fmtWord = fmtHeader + fmtMiddle + word + fmtTail;
this.word = word;
}
public void run() {
int y = getY();
while (y < getParent().getHeight()) {
y += 2;
setText(fmtWord);
setLocation(getX(), y);
if (removed) {
break;
}
try {
Thread.sleep(150);
} catch (InterruptedException ex) {
}
}
JPanel panel = (JPanel) getParent();
panel.remove(this);
DWords.this.removeKeyListener(this);
panel.validate();
panel.repaint();
}
@Override
public void keyPressed(KeyEvent e) {
// TODO Auto-generated method stub
}
@Override
public void keyReleased(KeyEvent e) {
}
@Override
public void keyTyped(KeyEvent e) {
char c = e.getKeyChar();
if (c == word.charAt(idx)) {
idx++;
if (idx == word.length()) {
removed = true;
DWords.this.resetWords();
}
} else {
idx = 0;
}
if (idx > 0) {
fmtWord = fmtHeader + word.substring(0, idx) + fmtMiddle
+ word.substring(idx) + fmtTail;
} else {
fmtWord = fmtHeader + fmtMiddle + word.substring(idx) + fmtTail;
}
}
public void reset() {
idx = 0;
fmtWord = fmtHeader + fmtMiddle + word.substring(idx) + fmtTail;
}
}
/**
* @param args
*/
public static void main(String[] args) {
final DWords dw = new DWords();
new Thread() {
public void run() {
dw.downWords();
}
}.start();
}
}
