2048小游戏（Java）（swing实现）（二）

这里是上一次的成果，只能用鼠标点，没法用键盘

最近扩充了一下知识面，实现了用键盘操控2048小游戏

但是还是不支持同时使用键盘和鼠标同时操作

 import javax.swing.*;

 //import com.sun.glass.events.KeyEvent;

 import java.awt.*;
 import java.awt.event.*;

 public class JF2048 extends JFrame {

 /**
      *
      */
     private static final long serialVersionUID = 1L;

 private Ja2048 ja;

 public JButton b[] = {
 new JButton(),
 new JButton(),
 new JButton(),
 new JButton()
 };

 public JButton back = new JButton("back");

 private ActionListener b0 = new ActionListener(){
 public void actionPerformed(ActionEvent e){
 ja.cp0();
 }};

 private ActionListener b1 = new ActionListener(){
 public void actionPerformed(ActionEvent e){
 ja.cp1();
 }};

 private ActionListener b2 = new ActionListener(){
 public void actionPerformed(ActionEvent e){
 ja.cp2();
 }};

 private ActionListener b3 = new ActionListener(){
 public void actionPerformed(ActionEvent e){
 ja.cp3();
 }};

 private ActionListener back1 = new ActionListener(){
 public void actionPerformed(ActionEvent e){
 ja.back();
 }};

 public JLabel[][] la ={
 {new JLabel(),new JLabel(),new JLabel(),new JLabel()},
 {new JLabel(),new JLabel(),new JLabel(),new JLabel()},
 {new JLabel(),new JLabel(),new JLabel(),new JLabel()},
 {new JLabel(),new JLabel(),new JLabel(),new JLabel()},
 };

 public JF2048(){

 super("2048");

 //this.addKeyListener(x);

 b[0].setBounds(3,20,16,156);
 b[1].setBounds(178,20,16,156);
 b[2].setBounds(20,3,156,16);
 b[3].setBounds(20,178,156,16);
 back.setBounds(3,3,16,16);

 b[0].addActionListener(b0);
 b[1].addActionListener(b1);
 b[2].addActionListener(b2);
 b[3].addActionListener(b3);
 back.addActionListener(back1); 

 for(int i =0;i<4;i++)
 for(int j =0;j<4;j++){
 la[i][j].setBounds(20+40*i,20+40*j,36,36);
 la[i][j].setOpaque(true);
 //la[i][j].setFont(new Font("幼圆",1,24));
 la[i][j].setHorizontalAlignment(SwingConstants.CENTER);
 }

 this.setSize(217,238);
 //this.add(b[0]);
 //this.add(b[1]);
 //this.add(b[2]);
 //this.add(b[3]);
 //this.add(back);
 for(int i =0;i<4;i++)
 for(int j =0;j<4;j++)
 this.add(la[i][j]);
 JLabel p = new JLabel();
 p.setBackground(new Color(127,127,127));
 p.setOpaque(true);
 this.add(p);
 this.addKeyListener(new KeyAdapter()//键盘监听按钮
         {
              public void keyPressed(KeyEvent e)
              {
                  switch(e.getKeyCode()){
                  case KeyEvent.VK_UP:ja.cp2();break;
                  case KeyEvent.VK_DOWN:ja.cp3();break;
                  case KeyEvent.VK_RIGHT:ja.cp1();break;
                  case KeyEvent.VK_LEFT:ja.cp0();break;
                  case KeyEvent.VK_BACK_SPACE:ja.back();
                  }
              }

          });

 this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 this.setVisible(true);
 }

 public static void main(String[] args){
 JF2048 jf = new JF2048();
 jf.ja=new Ja2048(jf);
 }

 }

界面部分代码

 import java.awt.*;
 public class Ja2048{

 public static int[][] state=new int[4][4];
 public static int[][] bac=new int[4][4];

 private JF2048 linkF;

 public Ja2048(JF2048 a){
 this.linkF = a;
 setNull(state,getRandom());
 setNull(state,getRandom());
 setState();
 }
 /**
  * 向左
  */
 public void cp0(){
 boolean bool= false;
 for(int i = 1;i<4;i++)
 for(int j = 0;j<4;j++)
 if(state[i][j]!=0&&(state[i-1][j]==0||state[i-1][j]==state[i][j]))
 bool=true;
 if(!bool)return;

 for(int i =0;i<4;i++)
 for(int j =0;j<4;j++)
 bac[i][j]=state[i][j];

 int[][] b = new int[4][4];
 for(int j=0;j<4;j++){
 int[] a ={state[0][j],state[1][j],state[2][j],state[3][j]};
 b[j]=LierIntArr.drop(a);
 }
 setNull(b,getRandom());
 int[][] x=new int[4][4];
 for(int i=0;i<4;i++)
 for(int j=0;j<4;j++)
 x[i][j]=b[j][i];
 state=x;
 setState();
 }//向左
 /**
  * 向右
  */
 public void cp1(){
 boolean bool=false;
 for(int i=0;i<3;i++)
 for(int j=0;j<4;j++)
 if(state[i][j]!=0&&(state[i+1][j]==0||state[i+1][j]==state[i][j]))
 bool=true;
 if(!bool)return;
 bac=state;
 int[][] b = new int[4][4];
 for(int j=0;j<4;j++){
 int[] a = {state[3][j],state[2][j],state[1][j],state[0][j]};
 b[j]=LierIntArr.drop(a);
 }
 setNull(b,getRandom());
 int[][] x=new int[4][4];
 for(int i=0;i<4;i++)
 for(int j=0;j<4;j++)
 x[i][j]=b[j][3-i];
 state=x;
 setState();
 }//向右
 /**
  * 向上
  */
 public void cp2(){
 boolean bool=false;
 for(int i=0;i<4;i++)
 for(int j=1;j<4;j++)
 if(state[i][j]!=0&&(state[i][j-1]==0||state[i][j-1]==state[i][j]))
 bool=true;
 if(!bool)return;
 bac=state.clone();
 int[][] b = new int[4][4];
 for(int i=0;i<4;i++)
 b[i]=LierIntArr.drop(state[i]);
 setNull(b,getRandom());
 state=b.clone();
 setState();
 }//向上
 /**
  * 向下
  */
 public void cp3(){
 boolean bool=false;
 for(int i=0;i<4;i++)
 for(int j=0;j<3;j++)
 if(state[i][j]!=0&&(state[i][j+1]==0||state[i][j+1]==state[i][j]))
 bool=true;
 if(!bool)return;
 bac=state.clone();
 int[][] b=new int[4][4];
 for(int i=0;i<4;i++){
 int[] a ={state[i][3],state[i][2],state[i][1],state[i][0]};
 b[i]=LierIntArr.drop(a);
 }
 setNull(b,getRandom());
 int[][] x=new int[4][4];
 for(int i=0;i<4;i++)
 for(int j=0;j<4;j++)
 x[i][j]=b[i][3-j];
 state=x;
 setState();
 }//向下
 /**
  * 回滚
  */
 public  void back(){
 state=bac.clone();
 setState();
 }
 private void setState(){
 for(int i=0;i<4;i++)
 for(int j=0;j<4;j++){
 if(state[i][j]==0){
 linkF.la[i][j].setText("");
 linkF.la[i][j].setBackground(new Color(227,227,227));
 linkF.la[i][j].setForeground(new Color(0,0,0));
 }
 else if(state[i][j]==2){
 linkF.la[i][j].setText("2");
 linkF.la[i][j].setFont(new Font("幼圆",1,20));
 linkF.la[i][j].setBackground(new Color(255,255,255));
 linkF.la[i][j].setForeground(new Color(0,0,0));
 }
 else if(state[i][j]==4){
 linkF.la[i][j].setText("4");
 linkF.la[i][j].setFont(new Font("幼圆",1,20));
 linkF.la[i][j].setBackground(new Color(127,227,127));
 linkF.la[i][j].setForeground(new Color(0,0,0));
 }
 else if(state[i][j]==8){
 linkF.la[i][j].setText("8");
 linkF.la[i][j].setFont(new Font("幼圆",1,20));
 linkF.la[i][j].setBackground(new Color(0,127,127));
 linkF.la[i][j].setForeground(new Color(255,255,255));
 }
 else if(state[i][j]==16){
 linkF.la[i][j].setText("16");
 linkF.la[i][j].setFont(new Font("幼圆",1,20));
 linkF.la[i][j].setBackground(new Color(0,255,0));
 linkF.la[i][j].setForeground(new Color(255,255,255));
 }
 else if(state[i][j]==32){
 linkF.la[i][j].setText("32");
 linkF.la[i][j].setFont(new Font("幼圆",1,20));
 linkF.la[i][j].setBackground(new Color(127,127,0));
 linkF.la[i][j].setForeground(new Color(255,255,255));
 }
 else if(state[i][j]==64){
 linkF.la[i][j].setText("64");
 linkF.la[i][j].setFont(new Font("幼圆",1,20));
 linkF.la[i][j].setBackground(new Color(255,0,0));
 linkF.la[i][j].setForeground(new Color(255,255,255));
 }
 else if(state[i][j]==128){
 linkF.la[i][j].setText("128");
 linkF.la[i][j].setFont(new Font("幼圆",1,20));
 linkF.la[i][j].setBackground(new Color(127,255,0));
 linkF.la[i][j].setForeground(new Color(255,255,255));
 }
 else if(state[i][j]==256){
 linkF.la[i][j].setText("256");
 linkF.la[i][j].setFont(new Font("幼圆",1,20));
 linkF.la[i][j].setBackground(new Color(255,255,0));
 linkF.la[i][j].setForeground(new Color(0,0,0));
 }
 else if(state[i][j]==512){
 linkF.la[i][j].setText("512");
 linkF.la[i][j].setFont(new Font("幼圆",1,20));
 linkF.la[i][j].setBackground(new Color(255,255,0));
 linkF.la[i][j].setForeground(new Color(0,0,0));
 }
 else if(state[i][j]==1024){
 linkF.la[i][j].setText("1024");
 linkF.la[i][j].setFont(new Font("幼圆",1,16));
 linkF.la[i][j].setBackground(new Color(63,63,63));
 linkF.la[i][j].setForeground(new Color(255,255,255));
 }
 }//for循环

 }//setState方法

 private static int getRandom(){
 int a = (int)(1000*Math.random());
 if(a%10<3)
 return 4;
 else
 return 2;
 }//随机生成一个2或4，可通过调整判断条件中的数字大小来调整2和4所占的比率
 /**
  * 用于在4x4二维数组中随机挑出一个值为0的元素，并将其赋值为给定整数。特殊地，若该二维数组已满，返回false。
  * @param x    该二维数组
  * @param y    给定整数
  * @return
  */
 private static boolean setNull(int[][] x,int y){
 boolean bool=false;
 for(int i=0;i<4;i++)
 for(int j=0;j<4;j++)
 if(x[i][j]==0)bool=true;
 if(!bool)return false;

 int a = (int)(100*Math.random());
 int b = (int)(6+10*Math.random());
 int c = a%b;
 while(true){
 for(int i=0;i<4;i++)
 for(int j=0;j<4;j++){
 if(x[i][j]==0&&c<=0){
 x[i][j]=y;
 return true;
 }
 else if(x[i][j]==0&&c>0)
 c--;
 i=(i==4?0:i);
 j=(j==4?0:j);
 }
 }
 }//boolean setNull(int[][],int)方法用于在4x4二维数组中随机挑出一个值为0的元素，并将其赋值为给定整数。特殊地，若该二维数组已满，返回false。

 }

算法部分代码

 /**
  *
  * @author qliujinming@qq.com
  *
  * @see http://www.cnblogs.com/liujinming/
  *
  */
 public class LierIntArr{
 /**
 * 该方法用于接受一个整数数组，对该数组进行drop操作后返回
 * 示例：接受 2 0 2 0 5 5，返回4 10 0 0 0 0
 * @param 需要进行drop操作的数组
 * @return drop操作之后的数组
 */
 public static int[] drop(int[] a){
 int b = a.length;
 if(b<=1)return a;
 int[] c = new int[b];
 int j=0;
 for(int i=0;i<b;i++){
 if(c[j]==0&&a[i]!=0)
 c[j]=a[i];
 else if(c[j]!=0&&a[i]==c[j]){
 c[j]=2*a[i];
 j++;
 }
 else if(a[i]!=0&&c[j]!=0&&a[i]!=c[j]){
 j++;
 c[j]=a[i];
 }
 }
 return c;
 }
 //该方法用于接受一个整数数组，对该数组进行drop操作后返回
 //示例：接受 2 0 2 0 5 5，返回4 10 0 0 0 0

 public static void main(String[] args){
 int[] a = {0,2,0,2,4,0,0,4,2,0,2,5,5,0,10};
 int[] b = drop(a);
 for(int i = 0;i<b.length;i++)
 System.out.print(b[i]+",");
 }
 //输出结果：4，8，4，10，10，0，0，0，0，0，0，0，0，0，0，

 }

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