一个Java拼图游戏

  1 import java.awt.*;
  2 import java.applet.*;
  3 import java.awt.event.*;
  4 public class PPuzzle extends Applet{
  5     Image imgPuzzle,buff;
  6     Point fifteen=new Point(3,3);
  7     int[][] map={{0,4,8,12},{1,5,9,3},{2,6,10,14},{3,7,11,15}};
  8     int sx,sy;
  9     Canvas screen;
 10     Graphics gs,gb;
 11     boolean running=false;
 12     Button bStart=new Button("新游戏");
 13     Button bSee=new Button("显示正确的图像");
 14     public void init(){
 15         prepareImage();                    //准备图像
 16         sx=imgPuzzle.getWidth(this)/4;
 17         sy=imgPuzzle.getHeight(this)/4;
 18         setBackground(Color.blue);
 19         initScreen();                     //初始化画面
 20         initButtons();                    //初始化按钮
 21         add(screen);                      //向Applet添加组件
 22         add(bStart);
 23         add(bSee);
 24     }
 25     void prepareImage(){                  //准备图像的方法
 26         imgPuzzle=getImage(getCodeBase(),"temp/xxx.jpg");
 27         MediaTracker mt=new MediaTracker(this);
 28         mt.addImage(imgPuzzle, 0);        //等待至图像全部加载完毕
 29         try{
 30             mt.waitForAll();
 31         }catch(Exception e){}
 32         //创建buffer并获取其Graphics对象
 33         buff=createImage(imgPuzzle.getWidth(this),imgPuzzle.getHeight(this));
 34         gb=buff.getGraphics();
 35     }
 36     void initMap(){                       //初始化map
 37         java.util.Random rnd=new java.util.Random();
 38         int temp,x1,y1,x2,y2;
 39         for(int i=0;i<100;i++){
 40             x1=rnd.nextInt(4);
 41             x2=rnd.nextInt(4);
 42             y1=rnd.nextInt(4);
 43             y2=rnd.nextInt(4);
 44             temp=map[x1][y1];
 45             map[x1][y1]=map[x2][y2];
 46             map[x2][y2]=temp;
 47         }
 48         outer:for(int j=0;j<4;j++)
 49             for(int i=0;i<4;i++)
 50                 if(map[i][j]==15){
 51                     fifteen.setLocation(i,j);
 52                     break outer;
 53                 }
 54     }
 55     void initScreen(){                   //初始化画面
 56         screen=new Canvas(){             //创建screen对象
 57             public void paint(Graphics g){  //覆盖paint()方法
 58                 if(gs==null)gs=getGraphics();//获取screen的Graphics对象
 59                 if(running)
 60                     drawScreen();
 61                 else
 62                 //若游戏未开始，则显示整幅图像
 63                     g.drawImage(imgPuzzle,0,0,this);
 64             }
 65         };
 66         //设定screen的大小
 67         screen.setSize(imgPuzzle.getWidth(this),imgPuzzle.getHeight(this));
 68         
 69         screen.addMouseListener(new MouseAdapter(){  //处理鼠标事件
 70             public void mousePressed(MouseEvent me){
 71                 if(!running) return;
 72                 int x=me.getX()/sx,y=me.getY()/sy;
 73                 int fx=(int)fifteen.getX(),fy=(int)fifteen.getY();
 74                 if(Math.abs(fx-x)+Math.abs(fy-y)>=2)return;
 75                 if (map[x][y]==15)return;
 76                 map[fx][fy]=map[x][y];
 77                 map[x][y]=15;
 78                 fifteen.setLocation(x,y);
 79                 drawScreen();
 80             }
 81         });
 82     }
 83     void initButtons(){                               //初始化按钮
 84         //“新游戏”按钮事件的处理
 85         bStart.addActionListener(new ActionListener(){
 86             public void actionPerformed(ActionEvent ae){
 87                 initMap();                            //初始化mpa
 88                 drawScreen();                         //绘制画面
 89                 running=true;                        //代表游戏正在进行中
 90                 bSee.setLabel("显示正确的图像");      //改变bSee按钮的标题
 91             }
 92         });
 93         //“显示正确图像”按钮事件处理
 94         bSee.addActionListener(new ActionListener(){
 95             public void actionPerformed(ActionEvent ae){
 96                 //bSee按钮标题为“继续游戏”
 97                 if(bSee.getLabel().equals("继续游戏")){
 98                  drawScreen();                         //绘制画面
 99 //                 bSee.setLabel("显示正确图像");      //标题更改为“显示正确图像”  
100                  }
101                 else{
102                     //bSee的标题为“显示正确图像”
103                     gs.drawImage(imgPuzzle,0,0,screen);   //显示整幅图像
104                     bSee.setLabel("继续游戏");
105                 }
106             }
107         });
108     }
109     void drawScreen(){                                  //绘制画面的方法
110         gb.clearRect(0, 0, sx*4, sy*4);                 //清空buffer
111         //将制定位置的图像块绘制至buffer中
112         int i;
113         for(int j=0;j<4;j++)
114             for(i=0;i<4;i++)
115                 if(map[i][j]!=15)drawSegment(map[i][j],i,j);
116         //向Screen绘制buffer中的图像
117         gs.drawImage(buff, 0, 0, screen);
118     }
119     void drawSegment(int seg, int x, int y){
120         
121         int dx=seg%4*sx,dy=seg/4*sy;
122         
123         gb.drawImage(imgPuzzle,x*sx,y*sy,x*sx+sx-1,y*sy+sy-1,dx,dy,dx+sx-1,dy+sy-1,screen);
124     }
125     
126 }

 注意："temp/xxx.jpg"处是拼图的源图，具体图像位置由您自己决定