【分享】60行代码：Javascript 写的俄罗斯方块游戏

2024-04-27 14:22:51

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【分享】60行代码：javascript 写的俄罗斯方块游戏

效果如下，可测试：

<!doctype html>  <html><head><title>俄罗斯方块</title>  <meta name="Description" content="俄罗斯方块Javascript实现">  <meta name="KeyWords" content="俄罗斯方块,Javascript,实现,短小精悍,游戏,ithomer,ithomer.net">  </head><body>  <div id="box" style="margin: 20px auto; text-align:center; width:252px;font:25px/25px 宋体;background:#000;color:#9f9;border:#999 20px ridge;text-shadow:2px 3px 1px #0f0;"><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/></div>  <div id="footer" style="margin-top: 200px auto; text-align:center; font-size: 16px;"><input id="btn" type="button" value="点我开始" onclick="ToStart()" /></div>  <script>  var map=eval("["+Array(21).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 keycom={"38":"rotate(1)","40":"down()","37":"move(2,1)","39":"move(0.5,-1)"};  var dia, pos, bak, run;  function start(){      dia=tatris[~~(Math.random()*7)];      bak=pos={fk:[],y:0,x:4,s:~~(Math.random()*4)};      rotate(0);  }  function over(){      document.onkeydown=null;      clearInterval(run);      alert("GAME OVER");  }  function update(t){      bak={fk:pos.fk.slice(0),y:pos.y,x:pos.x,s:pos.s};      if(t) return;      for(var i=0,a2=""; i<20; 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,"/u25a1")))              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,"/u25a0").replace(/0/g,"/u3000");  }  function is(){      for(var i=0; i<4; i++)          if((pos.fk[i]&map[pos.y+i])!=0) return pos=bak;  }  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());  }  function down(){      ++pos.y;      if(is()){          for(var i=0; i<4 && pos.y+i<20; i++)              if((map[pos.y+i]|=pos.fk[i])==0xfff)                  map.splice(pos.y+i,1), map.unshift(0x801);          if(map[1]!=0x801) return over();          start();      }      update();  }  function move(t,k){      pos.x+=k;      for(var i=0; i<4; i++)          pos.fk[i]*=t;      update(is());  }  function ToStart(){start();  run=setInterval("down()",400);  document.onkeydown=function(e){      eval(keycom[(e?e:event).keyCode]);  };   document.getElementById("btn").style.display="none"; }</script></body></html>

来源：60行代码：Javascript 写的俄罗斯方块游戏

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