hitbrick.java

利用Java编程制作的小游戏打砖块 拥有图形界面 简单适合初学者参考学习

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;

public class HitBrick extends JFrame implements  KeyListener{
  private BallThread greenBallThread;//控制小球的线程
  private boolean xUp,yUp,bouncing;
  private int x,y,xDx,yDy;//小球坐标,增量
  private final int MAX_X=300,MAX_Y=500;
  private boolean renew;
  private JLabel label;
  private int Rx,Ry;//横板坐标

  private Brick brick[]=new Brick[18];//砖块
  private Ball ball;//小球

  public HitBrick(){
    super("打砖块");
    
    Container pane=getContentPane();

    label=new JLabel("按空格键开始");
    label.setHorizontalAlignment(JLabel.CENTER);
    label.setVerticalAlignment(JLabel.BOTTOM);
    pane.add(label);
    xUp=true;
    yUp=false;
    xDx=1;
    yDy=1;
    x=150;
    y=450;
    Rx=120;
    Ry=460;
    renew=true;
    bouncing=false;
    addKeyListener(this);


    brick[0]=new Brick(0,60,50,20);
    brick[1]=new Brick(50,60,50,20);
    brick[2]=new Brick(100,60,50,20);
    brick[3]=new Brick(150,60,50,20);
    brick[4]=new Brick(200,60,50,20);
    brick[5]=new Brick(250,60,50,20);
    brick[6]=new Brick(0,90,50,20);
    brick[7]=new Brick(50,110,50,20);
    brick[8]=new Brick(100,130,50,20);
    brick[9]=new Brick(150,130,50,20);
    brick[10]=new Brick(200,110,50,20);
    brick[11]=new Brick(250,90,50,20);
    brick[12]=new Brick(0,160,50,20);
    brick[13]=new Brick(50,160,50,20);
    brick[14]=new Brick(100,160,50,20);
    brick[15]=new Brick(150,160,50,20);
    brick[16]=new Brick(200,160,50,20);
    brick[17]=new Brick(250,160,50,20);
    ball=new Ball(150,450,10,10);
    
    
    setSize(MAX_X,MAX_Y);
    setResizable(false);
    setVisible( true );    
  }

  public void keyPressed(KeyEvent e) {
    if (e.getKeyCode() ==e.VK_SPACE) {
      if(renew){
        greenBallThread=new BallThread(this);
        bouncing = true;
        greenBallThread.start();
        label.setVisible(false);
      }
      renew=false;
    }
    if(e.getKeyCode()==e.VK_LEFT){
      Rx=Rx-20;
      if(bouncing){
        if(Rx<0){
          Rx=0;
        }
      }
      else{
        if(Rx<0){
          Rx=0;
        }
        else{
          x=x-20;
          ball.ball_x=x;
        }
      }
      repaint();
    }
    if(e.getKeyCode()==e.VK_RIGHT){
      Rx=Rx+20;
      if(bouncing){
        if(Rx+80>300){
          Rx=220;
        }
      }
      else{
        if(Rx+80>300){
          Rx=220;
        }
        else{
          x=x+20;
          ball.ball_x=x;
        }
      }
      repaint();
    }
  }

  public void keyReleased (KeyEvent e) {}
  public void keyTyped (KeyEvent e){}

  public void paint(Graphics g){
    super.paint(g);
    ball.rect.setLocation(x,y);
    if(bouncing){
      for(int i=0;i<=17;i++){
        if(brick[i].visible==true){
          switch(i){
            case 0 :g.setColor(Color.blue);
                    break;
            case 1 :g.setColor(Color.cyan);
                    break;
            case 2 :g.setColor(Color.gray);
                    break;
            case 3 :g.setColor(Color.green);
                    break;
            case 4 :g.setColor(Color.magenta);
                    break;
            case 5 :g.setColor(Color.yellow);
                    break;
            case 6 :g.setColor(Color.white);
                    break;
            case 7 :g.setColor(Color.black);
                    break;
            case 8 :g.setColor(Color.orange);
                    break;
            case 9 :g.setColor(Color.pink);
                    break;
            case 10 :g.setColor(Color.darkGray);
                    break;
            case 11 :g.setColor(Color.red);
                    break;
            case 12 :g.setColor(Color.blue);
                    break;
            case 13 :g.setColor(Color.cyan);
                    break;
            case 14 :g.setColor(Color.gray);
                    break;
            case 15 :g.setColor(Color.green);
                    break;
            case 16 :g.setColor(Color.magenta);
                    break;
            case 17 :g.setColor(Color.yellow);
                    break;
           }
        g.fill3DRect(brick[i].brick_x,brick[i].brick_y,brick[i].brick_width,brick[i].brick_height,true);
        }
      }
      g.setColor(Color.red);
      g.fillOval(x, y, 10, 10);
      g.setColor(Color.blue);
      g.fillRect(Rx,Ry,80,20);
    }
    else{
      for(int i=0;i<=17;i++){
        switch(i){
            case 0 :g.setColor(Color.blue);
                    break;
            case 1 :g.setColor(Color.cyan);
                    break;
            case 2 :g.setColor(Color.gray);
                    break;
            case 3 :g.setColor(Color.green);
                    break;
            case 4 :g.setColor(Color.magenta);
                    break;
            case 5 :g.setColor(Color.yellow);
                    break;
            case 6 :g.setColor(Color.white);
                    break;
            case 7 :g.setColor(Color.black);
                    break;
           case 8 :g.setColor(Color.orange);
                    break;
           case 9 :g.setColor(Color.pink);
                    break;
           case 10 :g.setColor(Color.darkGray);
                    break;
           case 11 :g.setColor(Color.red);
                    break;
           case 12 :g.setColor(Color.blue);
                    break;
           case 13 :g.setColor(Color.cyan);
                    break;
           case 14 :g.setColor(Color.gray);
                    break;
           case 15 :g.setColor(Color.green);
                    break;
           case 16 :g.setColor(Color.magenta);
                    break;
           case 17 :g.setColor(Color.yellow);
                    break;
         }
         g.fill3DRect(brick[i].brick_x,brick[i].brick_y,brick[i].brick_width,brick[i].brick_height,true);
      }
      g.setColor(Color.red);
      g.fillOval(x, y, 10, 10);
      g.setColor(Color.blue);
      g.fillRect(Rx, Ry, 80, 20);
    }
  }

  public void move(){
    while(true){
      try{
        Thread.currentThread().sleep(25);
      }
      catch(InterruptedException exception){
        System.err.println(exception.toString());
      }

      for(int i=0;i<=17;i++){
        if(ball.rect.intersects(brick[i].rect)&&brick[i].visible){
          brick[i].visible=false;
          yUp=!yUp;
        }
      }

      if(x+5>Rx&&x+5<Rx+80&&y+10>=Ry){
        yUp=false;
        xDx=(int)(Math.random()*5+2);
        yDy=(int)(Math.random()*5+2);
      }

      if(xUp==true){
        x+=xDx;
      }
      else{
        x-=xDx;
      }
      if(yUp==true){
        y+=yDy;
      }
      else{
        y-=yDy;
      }

      if(y<=0){
        y=0;
        ball.ball_y=y;
        yUp=true;
        xDx=(int)(Math.random()*5+2);
        yDy=(int)(Math.random()*5+2);
      }
      else if(y>=MAX_Y-15){
        yDy=(int)(Math.random()*5+2);
        //yUp=false;
        break;
      }

      if(x<=0){
        x=0;
        ball.ball_x=x;
        xUp=true;
        xDx=(int)(Math.random()*5+2);
        yDy=(int)(Math.random()*5+2);
      }
      else if(x>=MAX_X-10){
        x=MAX_X-10;
        ball.ball_x=x;
        xDx=(int)(Math.random()*5+2);
        yDy=(int)(Math.random()*5+2);
        xUp=false;
      }
      ball.rect.setLocation(ball.ball_x,ball.ball_y);
      repaint();
      int i;                                         //如果所有砖块都不可见
      for(i=0;i<=17&&brick[i].visible==false;i++){   //则重新玩
      }
      if(i==18){
        break;
      }                                             //
    }
    renew=true;          //初始化
    bouncing=false;
    for(int i=0;i<=17;i++){
      brick[i].visible=true;
    }
    xUp=true;
    yUp=false;
    xDx=1;
    yDy=1;
    x=150;
    y=450;
    Rx=120;
    Ry=460;             //
    repaint();
    repaint();
    label.setVisible(true);
  }

  public static void main(String[] args) {
    HitBrick mar=new HitBrick();
  }
}

class BallThread extends Thread{
  private HitBrick m;
  BallThread(HitBrick a){
    //super();
    m=a;
  }

  public void  run(){
    m.move();
    m.repaint();
  }
}

class Brick{
  Rectangle rect=null; //长方形对象，砖块按钮的位置和宽高
  int brick_x,brick_y;//按扭的左上角坐标
  int brick_width,brick_height; //按扭的宽和高
  boolean visible;
  public Brick(int x,int y,int w,int h)
      {
      brick_x=x;brick_y=y;
      brick_width=w;brick_height=h;
      visible=true;
      rect=new Rectangle(x,y,w,h); //创建长方形对象---砖块按钮的位置和宽高。
  }
}

class Ball{
  Rectangle rect=null;
  int ball_x,ball_y;
  int ball_width,ball_height;
  public Ball(int x,int y,int w,int h){
    ball_x=x;
    ball_y=y;
    ball_width=w;
    ball_height=h;
    rect=new Rectangle(x,y,w,h);
  }
}