package kulki;
import java.awt.*;
import java.awt.event.ActionEvent;
import javax.swing.Timer;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.ArrayList;
import java.util.Random;
import javax.swing.*;
public class JavaApplication38
{
    public static void main(String[] args)
    {
        Okno a1 = new Okno("KOT", 200, 200, 800, 600);

    }
}
//---------------------------------
class Okno extends JFrame
{
    private Container tlo;
    private JButton start;
    private JButton stop;
    private JButton koniec;
    private MojPanel cent = new MojPanel();

    public Okno(String atyt, int ax0, int ay0, int aszer, int awys) {
        super(atyt);
        setBounds(ax0, ay0, aszer, awys);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        tlo = getContentPane();
        budujUI();
        setVisible(true);
    }
    private void budujUI() {
        tlo.setLayout(new BorderLayout());
        JPanel gorny = new JPanel();
        gorny.setBackground(Color.GRAY);
        gorny.setLayout(new FlowLayout(FlowLayout.CENTER));
        tlo.add(BorderLayout.NORTH, gorny);

//        cent.setLayout(new FlowLayout(FlowLayout.CENTER));
        cent.setFocusable(true);
        cent.setRequestFocusEnabled(true);
        cent.addKeyListener(new KeyListener()
        {

            @Override
            public void keyTyped(KeyEvent ke)
            {
            }
            @Override
            public void keyPressed(KeyEvent ke)
            {
                int k = ke.getKeyCode();
                if(k == KeyEvent.VK_LEFT)
                {
                    cent.p1.wLewo();
                    cent.repaint();
                }

                if(k == KeyEvent.VK_RIGHT)
                {
                    cent.p1.wPrawo();
                    cent.repaint();
                }
            }

            @Override
            public void keyReleased(KeyEvent ke)
            {
            }
        });
        tlo.add(cent);

        koniec = new JButton("END");
        start = new JButton("START");
        stop = new JButton("STOP");
        koniec.addActionListener(new KlikKoniec());
        start.addActionListener(new KlikStart());
        stop.addActionListener(new KlikStop());

        gorny.add(koniec);
        gorny.add(start);
        gorny.add(stop);


    }
    class KlikKoniec implements ActionListener
    {
        @Override
        public void actionPerformed(ActionEvent ae) {
            cent.zegarStop();
            dispose();
        }
    }
    class KlikStart implements ActionListener
    {
        @Override
        public void actionPerformed(ActionEvent ae) {
            cent.zegarStart();
            cent.requestFocus();
        }
    }
    class KlikStop implements ActionListener
    {
        @Override
        public void actionPerformed(ActionEvent ae) {
            cent.zegarStop();
        }
    }
}

//------------------------------------------------------------------------------
class MojPanel extends JPanel
{
    private ArrayList <Figura> figury = new ArrayList <Figura>();
    private Figura fi = new Figura( Color.RED, Color.GREEN, 200, 300, 50, -1, 2) {};
    public Paletka p1 = new Paletka(400, 100, 10, Color.black);
    private Timer t;

    public MojPanel()
    {
        super();


        Random r = new Random();
        for(int i=0; i<5; i++)
        {
           figury.add(new Kulka(Color.RED,Color.WHITE,r.nextInt(400) + 100,r.nextInt(300) + 100,r.nextInt(50)+10,r.nextInt(21)-10,r.nextInt(21)-10));
           figury.add(new Kwadrat(Color.GREEN,Color.WHITE,r.nextInt(400) + 100,r.nextInt(300) + 100,r.nextInt(50)+10,r.nextInt(21)-10,r.nextInt(21)-10));
        //   figury.add(new Prostokat(Color.BLUE,Color.WHITE,r.nextInt(400) + 100,r.nextInt(300) + 100,r.nextInt(50)+10,r.nextInt(21)-10,r.nextInt(21)-10));


           }

        t=new Timer(20,new ActionListener()
        {
            @Override
            public void actionPerformed(ActionEvent ae) {
                int szer = getWidth(), wys = getHeight();
                for(Figura f: figury)
                    f.porusz( szer, wys);
                fi.porusz(szer, wys);
                repaint();
            }
        });
    }
    @Override
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        for(Figura f: figury)
            f.rysuj(g);
        fi.rysuj(g);
        p1.rysuj(g, getHeight());
        repaint();
    }
    public void zegarStart()
    {
        t.start();
    }
    public void zegarStop()
    {
        t.stop();
    }
}
//------------------------------------------------------------------------------
abstract class Figura
{
    Color a, b;
    int x, y, r, vx, vy;
    public Figura(Color aa, Color ab, int ax, int ay, int ar, int avx, int avy)
    {
        a = aa;
        b = ab;
        x=ax;
        y=ay;
        r=ar;
        vx=avx;
        vy=avy;
    }

    public void rysuj(Graphics g)
    {
        g.setColor(a);
        g.fillOval(x-r, y-r, 2*r, 2*r);
        g.setColor(b);
        g.drawOval(x-r, y-r, 2*r, 2*r);
    }

    public void porusz(int szer, int wys)
    {
        if(x >= szer-r || x <= r)
        {
            vx=-vx;
        }
        if(y >= wys-r || y <= r)
        {
            vy=-vy;
        }
        x+=vx;
        y+=vy;
    }


}
class Kulka extends Figura
{

    public Kulka(Color aa, Color ab, int ax, int ay, int ar, int avx, int avy) {
        super(aa, ab, ax, ay, ar, avx, avy);
    }

    @Override
    public void rysuj(Graphics g)
    {
        g.setColor(a);
        g.fillOval(x-r, y-r, 2*r, 2*r);
        g.setColor(b);
        g.drawOval(x-r, y-r, 2*r, 2*r);
    }

}


class Kwadrat extends Figura
{

    public Kwadrat(Color aa, Color ab, int ax, int ay, int ar, int avx, int avy) {
        super(aa, ab, ax, ay, ar, avx, avy);
    }

    @Override
    public void rysuj(Graphics g)
    {
        g.setColor(a);
        g.fillRect(x-r, y-r, 2*r, 2*r);
        g.setColor(b);
        g.drawRect(x-r, y-r, 2*r, 2*r);
    }

}

class Paletka
{
    private int x, szer, wys, dx = 10;
    private Color k;
    public Paletka(int ax, int aszer, int awys, Color ak)
    {
        x= ax;
        szer = aszer;
        wys= awys;
        k=ak;
    }


    public void rysuj(Graphics g, int wysOkna)
    {
        g.setColor(k);
        g.fillRect(x - szer/2, wysOkna - wys, szer, wys);

    }
    public void wLewo()
    {
        x-=dx;
    }
     public void wPrawo()
    {
        x+=dx;
    }
}