import java.awt.*;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.image.BufferStrategy;

import javax.swing.JFrame;


public class Oving2 extends Canvas implements Runnable, MouseListener {

    /**
     * Mucahit
     */
    private static final long serialVersionUID = 1L;
    public static int width = 280;
    public static int height = width;
    public static int scale = 2;

    double posX = 290;
    double posY = 290;
    Rectangle rect = new Rectangle((int)posX, (int)posY, 30, 30);
    boolean mousePressed = false;
    //PointerInfo p = MouseInfo.getPointerInfo();

    private Thread thread;
    public boolean running = false;

    private JFrame frame;


    public Oving2() {
        Dimension fsize = new Dimension(width * scale, height * scale);
        this.addMouseListener(this);
        setPreferredSize(fsize);

        frame = new JFrame();
    }

    public synchronized void start() {
        running = true;
        thread = new Thread(this);
        thread.start();
    }

    public synchronized void stop() {
        running = false;
        try {
            thread.join();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

    }

    @Override
    public void run() {

        while (running) {
            if(this.getMousePosition() != null) {
                update();      //SMOOTH MOVE
            }
            render();     //RENDER AS FAST AS POSSIBUL!
        }
        stop();
    }

    private void render() {

        BufferStrategy bs = getBufferStrategy();

        if (bs == null) {
            createBufferStrategy(3);
            return;
        }


        Graphics g = bs.getDrawGraphics();
        //
        Graphics2D g2 = (Graphics2D) g;
        super.paint(g2);
        //
        g2.fillRect(200, 200, 200, 200);
        g2.setColor(Color.white);
        //X1, Y1, X2, Y2
        g2.drawLine(200, 300, (int)posX, (int)posY + 10);
        g2.drawLine((int) posX + 20, (int) posY + 10, 400, 300);
        g2.drawOval((int) posX, (int) posY, 20, 20);
        rect.setLocation((int)posX, (int)posY);
        //
        g.dispose();
        bs.show();
    }

    private void update() {
       // System.out.println("updating");


            int x = (int) this.getMousePosition().getX();
            int y = (int) this.getMousePosition().getY();

        if (rect.contains(x + 10, y + 10)) {
            setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
        }
        else{
            setCursor(Cursor.getDefaultCursor());
        }

            if (mousePressed) {
                //System.out.println("x : " + x + "   y :" + y);
                if (rect.contains(x + 10, y + 10)) {

                    posY = y;
                    posX = x;

                }
            } else {
                posY = 290;
                posX = 290;
            }
    }

    public static void main(String[] args) {
        Oving2 oving2 = new Oving2();
        oving2.frame.setResizable(false);
        oving2.frame.setTitle("Frame");
        oving2.frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        oving2.frame.add(oving2);
        oving2.frame.pack();
        oving2.frame.setLocationRelativeTo(null);
        oving2.frame.setVisible(true);

        oving2.start();
    }

    @Override
    public void mouseClicked(MouseEvent e) {

    }

    @Override
    public void mousePressed(MouseEvent e) {
        System.out.println("true");
        mousePressed = true;
    }

    @Override
    public void mouseReleased(MouseEvent e) {
        System.out.println("false");
        mousePressed = false;
    }

    @Override
    public void mouseEntered(MouseEvent e) {

    }

    @Override
    public void mouseExited(MouseEvent e) {

    }
}