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：
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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); }} |
希望本文所述对大家java程序设计有所帮助。
原文链接：http://blog.csdn.net/cjc211322/article/details/40621471
