mines.java

在windows下玩的扫雷用java编写

/*
    该类实现了本实例的基本逻辑，它通过指定的大小构造了游戏区域 
    并且将适当数目的雷埋入该区域中，
    同时，该类还实现了设置变量的公有方法
    注意：虽然Mines类支持不同数目和大小的雷，但是本实例不支持
*/ 
import java.util.*;
import java.awt.*;

class mines {
     final static int MINE=16;
     final static int SCOPERTA=32;
     final static int MASK=31;
/*   下面解释了每个数字所表示的意义：
      5  4   3  2  1  0  
      .   .  .  .  .  .  
     32  16  8  4  2  1
      |   |  |  |  |  |
      |   |  -------------- 作为cell的保留值(从o到8)
      |   ------------------表示雷
      ----------------------表示该cell已经被用户访问过 
*/
//   play_field 是游戏区数组
     private int[] play_field=null;
     public Vector toShow = new Vector();
//   区域大小以及雷的数目
     private int rows,cols,num_mines;
//   构造函数
     public mines(int rows,int cols,int num_mines) {
          this.rows=rows;
          this.cols=cols;
          this.num_mines=num_mines;
          play_field=new int[rows*cols];
          FillPlayfield();
     }
     public int Rows() { return rows; }
     
     public int Cols() { return cols; }
     
     public int Mines() { return num_mines; }

     public int get_play_field(int i,int j){
          if (i<0 || i>rows-1 || j<0 || j>cols-1){ return 0; }
          return play_field[i*rows+j];
     }
     
     public int get_play_field(int i){
          return play_field[i];
     }

     public void set_play_field(int i,int j,int value){
          play_field[i*rows+j]=value; 
     }

     public void set_play_field(int i,int value){
          play_field[i]=value; 
     }
//   填充游戏区域
     private void FillPlayfield() {
          int i=0,j=0,r=0;         
          // 产生雷
          while (i<num_mines){
             do {
                 r=(int)(Math.random()*rows*cols);
             } while (play_field[r]==MINE);
             play_field[r]=MINE;
             i++;
          }
          int howmuch=0;
          for(i=0;i<rows;i++){
             for(j=0;j<cols;j++){
               if (get_play_field(i,j)!=MINE){
                    try {if (get_play_field(i-1,j-1)==MINE) howmuch++;}catch(ArrayIndexOutOfBoundsException e){};
                    try {if (get_play_field(i-1,j)==MINE) howmuch++;}catch(ArrayIndexOutOfBoundsException e){};
                    try {if (get_play_field(i-1,j+1)==MINE) howmuch++;}catch(ArrayIndexOutOfBoundsException e){};
                    try {if (get_play_field(i,j-1)==MINE) howmuch++;}catch(ArrayIndexOutOfBoundsException e){};
                    try { if (get_play_field(i,j+1)==MINE) howmuch++;}catch(ArrayIndexOutOfBoundsException e){};
                    try {if (get_play_field(i+1,j-1)==MINE) howmuch++;}catch(ArrayIndexOutOfBoundsException e){};
                    try {if (get_play_field(i+1,j)==MINE) howmuch++;}catch(ArrayIndexOutOfBoundsException e){};
                    try { if (get_play_field(i+1,j+1)==MINE) howmuch++;}catch(ArrayIndexOutOfBoundsException e){};
                    set_play_field(i,j,howmuch);      
                    howmuch=0;                        
               }
             }
           }  
     }
/*
     显示每个cell周围情况的方法
*/ 
     public void Show(int i,int j){
          if (i>=0 && i<rows && j>=0 && j<cols){
            if ((get_play_field(i,j) & SCOPERTA) != SCOPERTA){
              if (get_play_field(i,j) ==0) {
                 toShow.addElement(new Integer(i*rows+j)); 
                 set_play_field(i,j,get_play_field(i,j)|SCOPERTA); 
                 Show(i-1,j-1);
                 Show(i-1,j);
                 Show(i-1,j+1);
                 Show(i,j-1);
                 Show(i,j+1);
                 Show(i+1,j-1);
                 Show(i+1,j);
                 Show(i+1,j+1);
              }else{
                 toShow.addElement(new Integer(i*rows+j));
                 set_play_field(i,j,get_play_field(i,j)|SCOPERTA); 
              }
            }
          }
     }
}