CODEWITHSUNDEEP
javaswinganimationjpaneldrawrectangle
Balázs Szmetana
Balázs Szmetana

Reputation: 57

Java Swing Try to make a little animation with rectangle

Im try do do a mini game,but first i learn how to animate :) it will be a 2D game. So my problem is if i just try to draw a rectangle its work when i try to animate(i did lot of code but not work :( ) its not working.

Some one can help me to fix it or add some tips how can i try to do it.

public class Window extends JPanel implements ActionListener {

    Timer tm = new Timer(5 , this);

    int x2 = 0 , velX = 2;

    static int x= 500;
    static int y= 500;

    public void paintComponent(Graphics g){

        super.paintComponent(g);

        g.setColor(Color.RED);
        g.fillRect(x2, 30, 30, 30);

        tm.start();

    }

    public Window(){

        JFrame f = new JFrame();
        f.pack();
        f.setTitle("Game");
        f.setSize(x,y);
        f.setVisible(true);
        f.setLocationRelativeTo(null);
        f.setDefaultCloseOperation(f.EXIT_ON_CLOSE);
    }

    /*public void paint(Graphics g){


        Graphics2D g2d = (Graphics2D) g;
        Rectangle rect = new Rectangle(50, 50, 50, 50);


        g2d.translate(25, 25);
        g2d.rotate(Math.toRadians(45));
        g2d.draw(rect);
    }*/

    public static void main(String [] args) throws InterruptedException{
        Game g = new Game();
        g.setName("Test");
        System.out.println(g.getName());
        g.setScore();
    }

    @Override
    public void actionPerformed(ActionEvent e) {

        x2 = x2 + velX;
        repaint();

    }

}

Upvotes: 0

Views: 257

Answers (1)

Onur
Onur

Reputation: 5625

Your code works fine except you forget to add your Component (you named it Window) into the Container (JFrame in this case). To do that add f.add(this); at the end of your Window() constructor.

Take a look at swing-components-and-containers for more info.

Also I suggest you to take a look at Double-buffer-in-standard-Java-AWT and Game loops!

Upvotes: 2

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