java实现的2048游戏完整实例

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：

在线2048小游戏数字版：

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。