Block1.java

// Source File Name:   Block1.java

import java.awt.Container;
import javax.swing.JFrame;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;
import javax.swing.JPanel;


class Block1
{

    Block1()
    {
    }

    public static void main(String args[])
    {
        JFrame jframe = new JFrame();
        jframe.setTitle("Tennis");
        jframe.setSize(640, 480);
        jframe.setDefaultCloseOperation(3);
        MyPanel mypanel = new MyPanel();
        jframe.getContentPane().add(mypanel);
        jframe.setVisible(true);
    }
}


class MyPanel extends JPanel
    implements Runnable, MouseMotionListener
{
    Ball ball;
    Racket racket;
    boolean lose;

    int speed = 10; // NOT USE, NOW

    int block[] = new int[30]; // ブロックがあるかどうかの配列
    int x[] = new int[30];     // ブロックのｘ座標
    int y[] = new int[30];     // ブロックのｙ座標
    int blockWidth  = 8;     // ブロックの幅
    int blockHeight = 6;     // ブロックの高さ
    int margin = 5;            // 端まで行かないよう余裕を取る


    public MyPanel()
    {

        int i ,j;
        int k; // ブロック番号
        int yy; // 段毎のｙ座標

        /* ブロックの位置（ｘ、ｙ座標）の設定 */
        k = 0;
        for( i = 0 ; i < 3 ; i++ ) {
            yy = i * (blockHeight+3) + margin*3;
            for( j = 0 ; j < 10 ; j++ ) {
                x[k] = j * (blockWidth+4) + margin +2;
                y[k] = yy;
                block[k] = 1; // ブロックがある
                k = k + 1;
            }
        }



        setBackground(Color.white);
        addMouseMotionListener(this);
        ball = new Ball(100, 100, 5, 3, 0, 0, 610, 430, 20);
        racket = new Racket(300, 400, 100, 10);
        lose = false;
        Thread thread = new Thread(this);
        thread.start();
    }

    public void paintComponent(Graphics g)
    {
        super.paintComponent(g);
        ball.forward();


        if(ball.getY() + ball.getDiameter() >= racket.getY() && ball.getX() + ball.getDiameter() / 2 >= racket.getX() && ball.getX() + ball.getDiameter() / 2 <= racket.getX() + racket.getWidth())
            ball.bounce();

//        if(ball.getY() > racket.getY() + 10)  {
//            g.setColor(Color.black);
//            g.drawString("You lose", 290, 220);
//            lose = true;
//        }


            /* ブロックに当たったときの処理 */

//            for( int i = 0 ; i < 30 ; i++ ) {
//                if ( block[i] == 1 ) {

//                    if ( ... ) {    // ブロックに当たったら反転

//                        ......      // Y 方向に反転
//                        ...... = 0; // ブロックを消す

//                        if ( 10 <= i && i < 20 ) {
//                            speed = 8;
//                        } else {
//                            speed = 10;
//                        }

//                    }

//                }

//            }



        /* ブロックを描く */
        for( int i = 0 ; i < 30 ; i++ ) {
            if ( i < 10 ) {
                /* 1段目は青 */
                g.setColor(Color.blue);
            }
            if ( 10 <= i && i < 20 ) {
                /* 2段目は赤 */
                g.setColor(Color.red);
            }
            if ( 20 <= i ) {
                /* 3段目はシアン */
                g.setColor(Color.cyan);
            }
            if ( block[i] == 1 ) {
                /* ブロックがあれば、ブロックを描く */
                g.fillRect(x[i], y[i], blockWidth, blockHeight);
            }
        }



        // DRAW  BALL & RACKET
        g.setColor(Color.red);
        g.fillOval(ball.getX(), ball.getY(), ball.getDiameter(), ball.getDiameter());
        g.setColor(Color.gray);
        g.fillRect(racket.getX(), racket.getY(), racket.getWidth(), racket.getHeight());

    }

    public void mouseDragged(MouseEvent mouseevent)
    {
    }

    public synchronized void mouseMoved(MouseEvent mouseevent)
    {
        racket.setX(mouseevent.getX());
    }

    public void run()
    {
        do
        {
            do
            {
                repaint();
                try
                {
                    Thread.sleep(10L);
                    //Thread.sleep(speed);
                }
                catch(Exception exception) { }
            } while(!lose);
            try
            {
                Thread.sleep(5000L);
            }
            catch(Exception exception1) { }
            System.exit(0);
        } while(true);
    }

}


class Ball
{
    private int x;
    private int y;
    private int vx;
    private int vy;
    private int left;
    private int right;
    private int top;
    private int bottom;
    private int diameter;

    public Ball(int i, int j, int k, int l, int i1, int j1, int k1,
            int l1, int i2)
    {
        x = i;
        y = j;
        vx = k;
        vy = l;
        right = k1;
        left = i1;
        top = j1;
        bottom = l1;
        diameter = i2;
    }

    public void forward()
    {
        x = x + vx;
        y = y + vy;
        if(x < left || x > right)
            vx = -vx;
        if(y < top || y > bottom)
            vy = -vy;
    }

    public void bounce()
    {
        vy = -vy;
        forward();
    }

    public int getX()
    {
        return x;
    }

    public void setX(int i)
    {
        x = i;
    }

    public int getY()
    {
        return y;
    }

    public void setY(int i)
    {
        y = i;
    }

    public int getDiameter()
    {
        return diameter;
    }

}



class Racket
{
    int x;
    int y;
    int width;
    int height;

    public Racket(int i, int j, int k, int l)
    {
        x = i;
        y = j;
        width = k;
        height = l;
    }

    public void setX(int i)
    {
        x = i;
    }

    public int getX()
    {
        return x;
    }

    public void setY(int i)
    {
        y = i;
    }

    public int getY()
    {
        return y;
    }

    public int getWidth()
    {
        return width;
    }

    public int getHeight()
    {
        return height;
    }

}