java实现的2048游戏完整实例
作者：cjc雪狼
这篇文章主要介绍了java实现的2048游戏,结合完整实例形式分析了java实现2048游戏功能的相关数值运算、swing组件布局、事件响应等相关操作技巧,需要的朋友可以参考下
本文实例讲述了java实现的2048游戏。分享给大家供大家参考，具体如下：
先来看看运行效果：
具体代码如下：
package awtDemo;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
@SuppressWarnings("serial")
public class Game2048 extends JApplet{
@SuppressWarnings("unused")
private static final int UP=0,DOWN=1,LEFT=2,RIGHT=3;
private static final int WID=150,SP=10;
@SuppressWarnings("unused")
private int scores=0;
private static JLabel scoreLabel;
private boolean change,CheckMode=false,gameOverFlag=false,successFlag=false;
private int[] label={2,4,8,16,32,64,128};
private Color[] clo={
new Color(200,200,200),new Color(228,228,160),new Color(214,163,92),
new Color(234,124,72),new Color(240,84,77),new Color(255,68,53),new Color(200,200,64)
};
@SuppressWarnings("rawtypes")
private Map cmap=new HashMap();
public static RectObject[][] rset=new RectObject[4][4];
public RectObject[][] list=new RectObject[4][4];
private My2048Panel myp;
@SuppressWarnings("rawtypes")
private LinkedList saveList=new LinkedList();
private JButton goBackButton;
KeyListener kl=new KeyListener(){
public void keyPressed(KeyEvent e){
saveTheStep();
goBackButton.setVisible(true);
if(gameOverFlag==true){
return;
}
if(!aDirAble()){
gameOver();
}
int key=e.getKeyCode();
switch(key){
case KeyEvent.VK_UP:
change=false;
moveUp(true);
if(change==true){
getARandomRect();
//saveTheStep();
}
break;
case KeyEvent.VK_DOWN:
change=false;
moveDown(true);
if(change==true){
getARandomRect();
//saveTheStep();
}
break;
case KeyEvent.VK_LEFT:
change=false;
moveLeft(true);
if(change==true){
getARandomRect();
//saveTheStep();
}
break;
case KeyEvent.VK_RIGHT:
change=false;
moveRight(true);
if(change==true){
getARandomRect();
//saveTheStep();
}
break;
}
//saveTheStep();
}
public void keyTyped(KeyEvent e){}
public void keyReleased(KeyEvent e){}
};
class RectObject{
private int value;
public RectObject(){
value=0;
}
public RectObject(RectObject obj){
value=obj.value;
}
public boolean equals(Object inobj){
RectObject obj=(RectObject)inobj;
if(obj.value==value){
return true;
}
return false;
}
}
class Point{
int x;
int y;
public Point(int i,int j){
x=i;
y=j;
}
}
class My2048Panel extends JPanel{
private int[] xindex={SP,2*SP+WID,3*SP+2*WID,4*SP+3*WID};
private int[] yindex={SP,2*SP+WID,3*SP+2*WID,4*SP+3*WID};
@SuppressWarnings("deprecation")
public void paintComponent(Graphics g){
//background
super.paintComponent(g);
for(int i=0;i<xindex.length;i++){
for(int j=0;j<yindex.length;j++){
g.setColor(Color.WHITE);
g.drawRoundRect(xindex[i], yindex[j], WID, WID, WID/5, WID/5);
g.setColor(new Color(197,183,129));
g.fillRoundRect(xindex[i], yindex[j], WID, WID, WID/5, WID/5);
}
}
//paint rectangle
for(int i=0;i<4;i++){
for(int j=0;j<4;j++){
if(rset[i][j]!=null){
g.setColor(Color.WHITE);
g.drawRoundRect(yindex[j], xindex[i], WID, WID, WID/5, WID/5);
if(rset[i][j].value<128){
g.setColor((Color)cmap.get(rset[i][j].value));
}else{
g.setColor((Color)cmap.get(128));
}
g.fillRoundRect(yindex[j], xindex[i], WID, WID, WID/5, WID/5);
g.setColor(Color.BLACK);
Font font=new Font("TimesRoman",Font.BOLD,50);
g.setFont(font);
FontMetrics fm=Toolkit.getDefaultToolkit().getFontMetrics(font);
int len=fm.stringWidth(""+rset[i][j].value);
int hg=fm.getHeight();
g.drawString(""+rset[i][j].value, yindex[j]+WID/2-len/2, xindex[i]+WID/2+hg/4);
if(rset[i][j].value==2048 && successFlag==false){
successFlag=true;
gameSuccess();
}
}
}
}
}
}
class GameOverPane extends JPanel{
public GameOverPane(int w,int h){
setSize(w,h);
//setOpaque(false);
}
@SuppressWarnings("deprecation")
public void paintComponent(Graphics g){
super.paintComponent(g);
Font font=new Font("TimesRoman",Font.BOLD,80);
g.setFont(font);
FontMetrics fm=Toolkit.getDefaultToolkit().getFontMetrics(font);
int width=fm.stringWidth("Game Over");
int height=fm.getHeight();
g.setColor(new Color(255,0,0));
g.drawString("Game Over!", getWidth()/2-width/2, getHeight()/2-height/2);
}
}
class SuccessPane extends JPanel{
public SuccessPane(int w,int h){
setSize(w,h);
//setOpaque(false);
}
public void paintComponent(Graphics g){
super.paintComponent(g);
Font font=new Font("TimesRoman",Font.BOLD,80);
g.setFont(font);
@SuppressWarnings("deprecation")
FontMetrics fm=Toolkit.getDefaultToolkit().getFontMetrics(font);
int width=fm.stringWidth("Success!");
int height=fm.getHeight();
g.setColor(new Color(255,0,0));
g.drawString("Success!", getWidth()/2-width/2, getHeight()/2-height/2);
}
}
class LOGO extends JPanel{
public LOGO(int w ,int h){
setSize(w,h);
}
@SuppressWarnings("unused")
public void paintComponent(Graphics g){
super.paintComponent(g);
Font font=new Font("TimesRoman",Font.BOLD,60);
g.setFont(font);
@SuppressWarnings("deprecation")
FontMetrics fm=Toolkit.getDefaultToolkit().getFontMetrics(font);
int width=fm.stringWidth("2048");
int height=fm.getHeight();
g.setColor(new Color(255,0,0));
g.drawString("2048", 20, getHeight()/2+20);
}
}
public class goBackListener implements ActionListener{
@SuppressWarnings("rawtypes")
public void actionPerformed(ActionEvent e){
if(saveList.size()==0){
goBackButton.setVisible(false);
return;
}
ArrayList arr=(ArrayList)saveList.getLast();
scoreLabel.setText(""+arr.get(0));
for(int i=0;i<4;i++){
for(int j=0;j<4;j++){
int num=(int)arr.get(4*i+j+1);
if(num!=0){
rset[i][j]=new RectObject();
rset[i][j].value=num;
}else{
rset[i][j]=null;
}
}
}
saveList.removeLast();
repaint();
}
}
public class resetListener implements ActionListener{
public void actionPerformed(ActionEvent e){
refreshBest();
for(int i=0;i<4;i++){
for(int j=0;j<4;j++){
rset[i][j]=null;
}
}
scoreLabel.setText("0");
repaint();
getARandomRect();
getARandomRect();
}
}
//the applet init
public void init(){
Container cp=getContentPane();
cp.setLayout(null);
cp.setFocusable(true);
cp.addKeyListener(kl);
Font font=new Font("TimesNewman",Font.BOLD,30);
JLabel sl=new JLabel();
sl.setLayout(new GridLayout(2,1));
JLabel sllb=new JLabel("Scores");
sllb.setFont(font);
scoreLabel=new JLabel("0");
scoreLabel.setFont(font);
sl.add(sllb);
sl.add(scoreLabel);
int best=0;
try{
File file=new File("BestRecord");
if(file.exists()){
RandomAccessFile f=new RandomAccessFile(file,"rw");
best=f.readInt();
f.close();
}
}catch(FileNotFoundException e){
best=0;
e.printStackTrace();
}catch(IOException e){
best=0;
e.printStackTrace();
}
JLabel bsl=new JLabel();
bsl.setLayout(new GridLayout(2,1));
JLabel jl=new JLabel("Best");
jl.setFont(font);
JLabel jl1=new JLabel(""+best);
jl1.setFont(font);
bsl.add(jl);
bsl.add(jl1);
myp=new My2048Panel();
LOGO logo=new LOGO(0,0);
goBackButton=new JButton("UNDO");
goBackButton.setFont(font);
goBackButton.addActionListener(new goBackListener());
goBackButton.addKeyListener(kl);
JButton jb=new JButton("RESET");
jb.setFont(font);
jb.addActionListener(new resetListener());
jb.addKeyListener(kl);
sl.setBounds(500,20,200,80);
bsl.setBounds(300,20,200,80);
logo.setBounds(0, 0, 600, 100);
myp.setBounds(0,90,700,700);
goBackButton.setBounds(700,250,150,60);
jb.setBounds(700,450,150,60);
cp.add(sl);
cp.add(bsl);
cp.add(logo);
cp.add(myp);
cp.add(goBackButton);
cp.add(jb);
File f=new File("LASTRECORD");
if(f.exists()){
try{
RandomAccessFile file=new RandomAccessFile(f,"rw");
int num=file.readInt();
scoreLabel.setText(""+num);
for(int i=0;i<4;i++){
for(int j=0;j<4;j++){
num=file.readInt();
if(num!=0){
rset[i][j]=new RectObject();
rset[i][j].value=num;
}
}
}
file.close();
}catch(FileNotFoundException e){
e.printStackTrace();
}catch(IOException e){
e.printStackTrace();
}
}else{
getARandomRect();
getARandomRect();
}
}
@SuppressWarnings("unchecked")
public Game2048(){
//saveTheStep();
for(int i=0;i<7;i++){
cmap.put(label[i], clo[i]);
}
}
//moveLeft
public void moveLeft(boolean flag){
clearList(list);
for(int i=0;i<4;i++){
int k=0;
for(int j=0;j<4;j++){
if(rset[i][j]!=null){
list[i][k++]=new RectObject(rset[i][j]);
}
}
}
for(int i=0;i<4 && flag;i++){
for(int j=0;j<3;j++){
if(list[i][j]!=null && list[i][j+1]!=null && list[i][j].value==list[i][j+1].value){
list[i][j].value*=2;
if(CheckMode==false){
int sum=Integer.parseInt(scoreLabel.getText());
sum+=list[i][j].value;
scoreLabel.setText(""+sum);
}
list[i][j+1]=null;
j++;
}
}
}
if(isChange()){
if(CheckMode==false){
copySet(rset,list);
repaint();
moveLeft(false);
}
change=true;
}else{
repaint();
}
}
//moveRight
public void moveRight(boolean flag){
clearList(list);
for(int i=0;i<4;i++){
int k=3;
for(int j=3;j>-1;j--){
if(rset[i][j]!=null){
list[i][k--]=new RectObject(rset[i][j]);
}
}
}
for(int i=0;i<4 && flag;i++){
for(int j=3;j>0;j--){
if(list[i][j]!=null && list[i][j-1]!=null && list[i][j].value==list[i][j-1].value){
list[i][j].value*=2;
if(CheckMode==false){
int sum=Integer.parseInt(scoreLabel.getText());
sum+=list[i][j].value;
scoreLabel.setText(""+sum);
}
list[i][j-1]=null;
j--;
}
}
}
if(isChange()){
if(CheckMode==false){
copySet(rset,list);
repaint();
moveRight(false);
}
change=true;
}else{
repaint();
}
}
//moveup
public void moveUp(boolean flag){
clearList(list);
for(int j=0;j<4;j++){
int k=0;
for(int i=0;i<4;i++){
if(rset[i][j]!=null){
list[k++][j]=new RectObject(rset[i][j]);
}
}
}
for(int j=0;j<4 && flag;j++){
for(int i=0;i<3;i++){
if(list[i][j]!=null && list[i+1][j]!=null && list[i][j].value==list[i+1][j].value){
list[i][j].value*=2;
if(CheckMode==false){
int sum=Integer.parseInt(scoreLabel.getText());
sum+=list[i][j].value;
scoreLabel.setText(""+sum);
}
list[i+1][j]=null;
i++;
}
}
}
if(isChange()){
if(CheckMode==false){
copySet(rset,list);
repaint();
moveUp(false);
}
change=true;
}else{
repaint();
}
}
//movedown
public void moveDown(boolean flag){
clearList(list);
for(int j=0;j<4;j++){
int k=3;
for(int i=3;i>-1;i--){
if(rset[i][j]!=null){
list[k--][j]=new RectObject(rset[i][j]);
}
}
}
for(int j=0;j<4 && flag;j++){
for(int i=3;i>0;i--){
if(list[i][j]!=null && list[i-1][j]!=null && list[i][j].value==list[i-1][j].value){
list[i][j].value*=2;
if(CheckMode==false){
int sum=Integer.parseInt(scoreLabel.getText());
sum+=list[i][j].value;
scoreLabel.setText(""+sum);
}
list[i-1][j]=null;
i--;
}
}
}
if(isChange()){
if(CheckMode==false){
copySet(rset,list);
repaint();
moveDown(false);
}
change=true;
}else{
repaint();
}
}
//other functions
private void copySet(RectObject[][] dst, RectObject[][] src){
for(int i=0;i<4;i++){
for(int j=0;j<4;j++){
dst[i][j]=src[i][j];
}
}
}
//detect whether rset is different from list or not
private boolean isChange(){
for(int i=0;i<4;i++){
for(int j=0;j<4;j++){
if(rset[i][j]!=null && list[i][j]!=null && !rset[i][j].equals(list[i][j])){
return true;
}
if(rset[i][j]!=null && list[i][j]==null){
return true;
}
if(rset[i][j]==null && list[i][j]!=null){
return true;
}
}
}
return false;
}
private void clearList(RectObject[][] s){
for(int i=0;i<s.length;i++){
for(int j=0;j<s[i].length;j++){
s[i][j]=null;
}
}
}
//get a random rectangle
@SuppressWarnings({ "unchecked", "rawtypes" })
public void getARandomRect(){
ArrayList list=new ArrayList();
for(int i=0;i<4;i++){
for(int j=0;j<4;j++){
if(rset[i][j]==null){
list.add(new Point(i,j));
}
}
}
if(list.size()==0 && !aDirAble()){
gameOver();
return;
}
Random rand=new Random();
int index=rand.nextInt(list.size());
Point loc=(Point)list.get(index);
index=rand.nextInt(2);
rset[loc.x][loc.y]=new RectObject();
if(index==1){
rset[loc.x][loc.y].value=4;
}else{
rset[loc.x][loc.y].value=2;
}
}
//detect whether there are other steps or not
public boolean aDirAble(){
CheckMode=true;
change=false;
moveLeft(true);
moveRight(true);
moveDown(true);
moveUp(true);
CheckMode=false;
if(change==true){
return true;
}else{
return false;
}
}
public void gameOver(){
gameOverFlag=true;
JPanel jl=new GameOverPane(myp.getWidth(),myp.getHeight());
jl.setBounds(0, 0, 700, 700);
JButton jb1=new JButton("Again");
Font font=new Font("TimesRoman",Font.BOLD,30);
jb1.setOpaque(false);
jb1.setFont(font);
JButton jb2=new JButton("Close");
jb2.setSize(jb1.getSize());
jb2.setOpaque(false);
jb2.setFont(font);
jb1.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
scoreLabel.setText("0");
myp.remove(jl);
clearList(rset);
myp.validate();
getARandomRect();
getARandomRect();
repaint();
gameOverFlag=false;
refreshBest();
}
});
jb2.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
refreshBest();
File f=new File("LASTRECORD");
if(f.exists()){
f.delete();
}
System.exit(0);
}
});
jl.add(jb1);
jl.add(jb2);
myp.add(jl);
jl.validate();
}
public void gameSuccess(){
JPanel jl=new SuccessPane(myp.getWidth(),myp.getHeight());
jl.setOpaque(false);
jl.setBounds(0, 0, 700, 700);
JButton jb1=new JButton("Continue");
Font font=new Font("TimesRoman",Font.BOLD,30);
jb1.setOpaque(false);
jb1.setFont(font);
JButton jb2=new JButton("Close");
jb2.setSize(jb1.getSize());
jb2.setOpaque(false);
jb2.setFont(font);
jb1.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
myp.remove(jl);
myp.validate();
repaint();
}
});
jb2.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
refreshBest();
System.exit(0);
}
});
jl.add(jb1);
jl.add(jb2);
myp.add(jl);
jl.validate();
}
@SuppressWarnings("unchecked")
public void saveTheStep(){
if(saveList.size()<20){
@SuppressWarnings("rawtypes")
ArrayList arr=new ArrayList();
int score=Integer.parseInt(scoreLabel.getText());
arr.add(score);
for(int i=0;i<4;i++){
for(int j=0;j<4;j++){
if(rset[i][j]!=null){
arr.add(rset[i][j].value);
}else{
arr.add(0);
}
}
}
saveList.addLast(arr);
}else{
saveList.removeFirst();
saveTheStep();
}
}
public static String title(Object o){
String t=o.getClass().toString();
if(t.indexOf("class")!=-1){
t=t.substring(6);
}
return t;
}
public static void refreshBest(){
try {
int best=0;
File f=new File("BestRecord");
RandomAccessFile file;
if(f.exists()){
file=new RandomAccessFile(f,"rw");
best=file.readInt();
file.seek(0);
}else{
file=new RandomAccessFile(f,"rw");
}
//System.out.println("The Best score is "+best);
int cur=Integer.parseInt(scoreLabel.getText());
if(cur>best){
file.writeInt(cur);
}
file.close();
} catch (FileNotFoundException e1) {
e1.printStackTrace();
}catch(IOException e2){
e2.printStackTrace();
}
}
@SuppressWarnings("resource")
public static void saveRecord(){
try{
RandomAccessFile file=new RandomAccessFile(new File("LASTRECORD"),"rw");
int score=Integer.parseInt(scoreLabel.getText());
file.writeInt(score);
for(int i=0;i<4;i++){
for(int j=0;j<4;j++){
if(rset[i][j]!=null){
file.writeInt(rset[i][j].value);
}else{
file.writeInt(0);
}
}
}
}catch(FileNotFoundException e){
e.printStackTrace();
}catch(IOException e){
e.printStackTrace();
}
}
public static void run(JApplet applet,int width,int height){
JFrame frame=new JFrame(title(applet));
frame.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
refreshBest();
saveRecord();
//System.out.println("The score is "+scoreLabel.getText());
}
});
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(applet);
frame.setSize(width,height);
applet.init();
applet.start();
frame.setVisible(true);
}
public static void main(String[] args){
run(new Game2048(), 900, 800);
}
}
PS：这里再为大家推荐另两款本站2048游戏供大家参考（JS实现）
在线2048游戏：
http://tools.jb51.net/games/game2048
在线2048小游戏数字版：
http://tools.jb51.net/games/game2048num
更多关于java算法相关内容感兴趣的读者可查看本站专题：《Java数据结构与算法教程》、《Java操作DOM节点技巧总结》、《Java文件与目录操作技巧汇总》和《Java缓存操作技巧汇总》
希望本文所述对大家java程序设计有所帮助。