I was drawing my game on Canvas, all was god, but I changed it into a JPanel, but now its not working correctly, here are the codes, you can just copy them and you'll see where is the problem (I have a menu and after clicking on the button it should create new thread and there i want to draw, the problem in JPanel is that the button is able to see, its blinking and i can press it, in canvas it was fine, there wasn't any button). I solved it, that after clicking on the button I setted him unvisible (button.setVisible(false)), but these codes are just examples and in my game I have more buttons, so its not practical because I need them to see after the game ends. I think I just forgot an important method in JPanel, thx for help, codes:
//Main class representing menu
public class Sandbox extends JFrame{
Panel p = new Panel();
public static void main(String[] args) {
new Sandbox();
}
public Sandbox() {
setLayout(null);
setPreferredSize(new Dimension(200, 200));
setDefaultCloseOperation(EXIT_ON_CLOSE);
setResizable(false);
final JButton but = new JButton("Button");
but.setBounds(0, 0, 50, 50);
but.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
p.start();
}
});
add(p);
add(but);
pack();
setVisible(true);
}
}
//Drawing on Canvas -> working well
public class Panel extends Canvas implements Runnable {
Thread t;
public Panel() {
setSize(new Dimension(200, 200));
setVisible(false);
}
public void start() {
t = new Thread(this);
t.start();
setVisible(true);
}
public void draw() {
BufferStrategy b = getBufferStrategy();
if(b == null) {
createBufferStrategy(3);
return;
}
Graphics g = b.getDrawGraphics();
g.setColor(Color.red);
g.fillRect(0, 0, 200, 200);
g.dispose();
b.show();
}
@Override
public void run() {
while(!t.isInterrupted()) {
try {
draw();
t.sleep(200);
} catch (InterruptedException ex) {}
}
}
}
//Drawing on JPanel -> here i can press the button after first click on it
public class Panel extends JPanel implements Runnable {
Thread t;
public Panel() {
setSize(new Dimension(200, 200));
setVisible(false);
}
public void start() {
t = new Thread(this);
t.start();
setVisible(true);
}
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
g.setColor(Color.red);
g.fillRect(0, 0, 200, 200);
}
@Override
public void run() {
while(!t.isInterrupted()) {
try {
repaint();
t.sleep(200);
} catch (InterruptedException ex) {}
}
}
}
