我是java的新手,我目前正在開發一款遊戲。本質上,氣泡上升,用戶必須通過將鼠標移到它們上面來彈出它們。在JFrame上製作一個透明的JPanel
我已經在JFrame上做了一個動畫,我需要在上面添加一個MouseMotionListener的JPanel。但是,當我在JFrame上添加JPanel時(即使setOpaque爲false),它仍然不會讓我看到我的動畫在下面。你可以在下面看到我的代碼。如果您發現編碼錯誤,請告訴我。
我有兩種解決方案,要麼在JPanel中生成動畫(我不知道該怎麼做),要麼讓JPanel透明。
遊戲類:
public class Game extends JPanel{
public static final int WINDOW_WIDTH = 600;
public static final int WINDOW_HEIGHT = 400;
private boolean insideCircle = false;
private static boolean ifPaused = false;
private static JPanel mainPanel;
private static JLabel statusbar;
private static int clicks = 0;
//Creates a Bubbles object Array
Bubbles[] BubblesArray = new Bubbles[5];
public Game() {
//initializes bubble objects
for (int i = 0; i < BubblesArray.length; i++)
BubblesArray[i] = new Bubbles();
}
public void paint(Graphics graphics) {
//makes background white
graphics.setColor(Color.WHITE);
graphics.fillRect(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
//paints square objects to the screen
for (Bubbles aBubblesArray : BubblesArray) {
aBubblesArray.paint(graphics);
}
}
public void update() {
//calls the Square class update method on the square objects
for (Bubbles aBubblesArray : BubblesArray) aBubblesArray.update();
}
public static void main(String[] args) throws InterruptedException {
statusbar = new JLabel("Default");
mainPanel = new JPanel();
mainPanel.setOpaque(false);
mainPanel.setBackground(new Color(0,0,0,0));
mainPanel.setVisible(true);
mainPanel.addMouseMotionListener(new MouseAdapter() {
@Override
public void mouseMoved(MouseEvent e) {
statusbar.setText(String.format("Your mouse is at %d, %d", e.getX(), e.getY()));
}
public void mouseExited(MouseEvent e){
ifPaused = true;
}
public void mouseEntered(MouseEvent e){
ifPaused = false;
}
});
Game game = new Game();
JFrame frame = new JFrame();
frame.add(game);
frame.add(mainPanel);
frame.add(statusbar, BorderLayout.SOUTH);
frame.setVisible(true);
frame.setSize(WINDOW_WIDTH, WINDOW_HEIGHT);
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.setTitle("Bubble Burst");
frame.setResizable(false);
frame.setLocationRelativeTo(null);
while (true) {
if (!ifPaused){
game.update();
game.repaint();
Thread.sleep(5);
}
}
}
}
不想'paintComponent'到'paint',還要確保你調用的方法超級實現(即'super.paint(圖形)')接下來的問題是,爲什麼不把監聽器添加到'Game' Panel'? – MadProgrammer