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[Java教程]几十行代码就搞定俄罗斯方块


 

写的不错,思路也很清晰,学习一下!

 

<!doctype html><html><head>  <title>俄罗斯方块</title>  <style type="text/css">    body { color:#dbdbdb; background:#000; font:25px/25px 宋体; }    #box { position:absolute; left:50%; top:10px; margin-left:-220px; width:252px;border:#999 5px ridge; }    #info {  position:absolute; left:50%; top:30px; margin-left:90px; font-family: Microsoft YaHei;}    #next { padding:8px;width:105px; font-family: 宋体;}    #rend { padding-top:30px; font:16px/25px 宋体;font-family: Microsoft YaHei; }    #rend span { color:#ffff00; }  </style></head><body class="c0">  <div id="box" class="color"></div>  <div id="info">    NEXT:<div id="next" class="color"></div>    <div id="text"></div>    <div id="rend">      <span>←↓→</span>:控制方向<br />      <span>Z X ↑</span>:改变形状<br />      <span>Shift</span> :一键到底<br />      <span>空格键</span>:暂停<br />    </div>  </div>    <script type="text/javascript">    var map=eval("["+Array(23).join("0x801,")+"0xfff]");    var tatris=[      [0x6600],      [0x2222,0xf00],      [0xc600,0x2640],      [0x6c00,0x4620],      [0x4460,0x2e0,0x6220,0x740],      [0x2260,0xe20,0x6440,0x4700],      [0x2620,0x720,0x2320,0x2700]    ];    var char={x:"\u3000",s:"\u25a0",t:"\u25a1"};    var downkey={},       retkey={"40":3,"37":6,"39":6},       keycom={        "38":"rotate(1)",        "90":"rotate(1)",        "88":"rotate(3)",        "40":"down()","16":        "fastdown()",        "37":"move(1)",        "39":"move(-1)",        "32":"0;pause=!pause"      };    var dia, pos, bak, run, next, pause=false, info={speed:1,lines:0,score:0};    function start(){      dia=next.d;      bak=pos={fk:[],y:0,x:4,s:next.s};      nextdia();      document.getElementById("next").innerHTML=(next.d[next.s%next.d.length]|0x10000).toString(2).slice(-16).replace(/..../g,"$&<br/>").replace(/1/g,char.t).replace(/0/g,char.x);       document.getElementById("text").innerHTML="SCORE:"+info.score+"<br/><br/>LINES:"+info.lines+"<br/><br/>SPEED:"+info.speed;      rotate(0);      run=setInterval("pause||down()",~~(Math.pow(1.3,12-info.speed)*30+20));    }    function over(){      clearInterval(kTime);      alert("GAME OVER");    }    function nextdia(){      next={d:tatris[~~(Math.random()*7)],s:~~(Math.random()*4)};    }    function update(t){      t&&(pos=bak);      bak={fk:pos.fk.slice(0),y:pos.y,x:pos.x,s:pos.s};      if(t) return;      for(var i=0,a2=""; i<22; i++)        a2+=map[i].toString(2).slice(1,-1)+"<br/>";      for(var i=0,n; i<4; i++)        if(/([^0]+)/.test(bak.fk[i].toString(2).replace(/1/g,char.t)))          a2=a2.substr(0,n=(bak.y+i+1)*15-RegExp.$_.length-4)+RegExp.$1+a2.slice(n+RegExp.$1.length);      document.getElementById("box").innerHTML=a2.replace(/1/g,char.s).replace(/0/g,char.x);    }    function is(){      for(var i=0; i<4; i++)        if((pos.fk[i]&map[pos.y+i])!=0) return true;    }    function rotate(r){      var f=dia[pos.s=(pos.s+r)%dia.length];      for(var i=0; i<4; i++)        pos.fk[i]=(f>>(12-i*4)&15)<<pos.x;      update(is()&&ert(1)&&ert(-2)&&ert(-1));    }    function down(){      ++pos.y;      if(is()){        pos=bak;        for(var i=0, r=0; i<4 && pos.y+i<22; i++)          if((map[pos.y+i]|=pos.fk[i])==0xfff){            map.splice(pos.y+i,1);            map.unshift(0x801);            r++;            if(++info.lines%20==0)              document.body.className="c"+info.speed++%7;          }        clearInterval(run);        if(map[1]!=0x801) return over();        info.score+=~~(Math.pow(r,1.8)*10)+2;        start();      }      update();    }    function fastdown(){      clearInterval(run);      run=setInterval("pause||down()",12);    }    function move(k){      update(ert(k));    }    function ert(k){      pos.x+=k;      for(var i=0; i<4; i++)        k>0 ? pos.fk[i]<<=k : pos.fk[i]>>=-k;      return is();    }    document.onkeydown=function(e){      var k=(e||event).keyCode;      if(keycom[k] && !(k in downkey))        downkey[k]=0;    };    document.onkeyup=function(e){      var k=(e||event).keyCode;      if(keycom[k])        delete downkey[k];    };    var kTime = setInterval(function(){      for(var k in downkey)        if(++downkey[k]==1 || retkey[k] && downkey[k]>retkey[k])          eval("pause||"+keycom[k]);    },25);    nextdia();    start();  </script></body></html>