Java - 具有 thread.sleep 的多个线程的不同绘制

Question

I'm newbie and I'm trying to make a game but than I don't understand how to use repaint() from different paint with different threads too. One thread with thread.sleep and the other one doesn't have.

Here's my piece of code :

GamePanel :

public class GamePanel extends JPanel implements MouseListener, MouseMotionListener{

EnemyEngine enemyE = new EnemyEngine();

public GamePanel() {

    new Thread(new Runnable() {

        @Override
        public void run() {
            while(true){            
                repaint();
            }
        }
    }).start();

    new Thread(new Runnable() {

        @Override
        public void run() {
            while(true){            
                enemyE.update();
                enemyE.repaint();

                try { 
                    Thread.sleep(1000/10);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    }).start();
}
public void paintComponent(Graphics g) {
    // board painting
}

}

EnemyEngine:

public class EnemyEngine extends JPanel{

Vector<Enemy> enemyVect = new Vector<>();

Random rand = new Random();

public void paintComponent(Graphics g){
    for (Enemy enemy : enemyVect) {
        enemy.render(g);
    }
}

public void update() { 
    for (Enemy enemy : enemyVect) {
        enemy.move();
    }
}

}

I have already search on the internet but it still didn't work...or maybe I'm the stupid one :/

Please help me senpai

Answer 1

I don't understand clearly your issue about repaint? If you want to refresh ui immediately, why don't you use paintImmediately(0, 0, getWidth(), getHeight());