1 <!doctype html><html><head></head><body>
2 <div id="box" style="width:252px;font:25px/25px 宋体;background:#000;color:#9f9;border:#999 20px ridge;text-shadow:2px 3px 1px #0f0;"></div>
3 <script>
4 var map=eval("["+Array(23).join("0x801,")+"0xfff]");
5 var tatris=[[0x6600],[0x2222,0xf00],[0xc600,0x2640],[0x6c00,0x4620],[0x4460,0x2e0,0x6220,0x740],[0x2260,0xe20,0x6440,0x4700],[0x2620,0x720,0x2320,0x2700]];
6 var keycom={"38":"rotate(1)","40":"down()","37":"move(2,1)","39":"move(0.5,-1)"};
7 var dia, pos, bak, run;
8 function start(){
9 dia=tatris[~~(Math.random()*7)];
10 bak=pos={fk:[],y:0,x:4,s:~~(Math.random()*4)};
11 rotate(0);
12 }
13 function over(){
14 document.onkeydown=null;
15 clearInterval(run);
16 alert("GAME OVER");
17 }
18 function update(t){
19 bak={fk:pos.fk.slice(0),y:pos.y,x:pos.x,s:pos.s};
20 if(t) return;
21 for(var i=0,a2=""; i<22; i++)
22 a2+=map[i].toString(2).slice(1,-1)+"<br/>";
23 for(var i=0,n; i<4; i++)
24 if(/([^0]+)/.test(bak.fk[i].toString(2).replace(/1/g,"\u25a1")))
25 a2=a2.substr(0,n=(bak.y+i+1)*15-RegExp.$_.length-4)+RegExp.$1+a2.slice(n+RegExp.$1.length);
26 document.getElementById("box").innerHTML=a2.replace(/1/g,"\u25a0").replace(/0/g,"\u3000");
27 }
28 function is(){
29 for(var i=0; i<4; i++)
30 if((pos.fk[i]&map[pos.y+i])!=0) return pos=bak;
31 }
32 function rotate(r){
33 var f=dia[pos.s=(pos.s+r)%dia.length];
34 for(var i=0; i<4; i++)
35 pos.fk[i]=(f>>(12-i*4)&15)<<pos.x;
36 update(is());
37 }
38 function down(){
39 ++pos.y;
40 if(is()){
41 for(var i=0; i<4 && pos.y+i<22; i++)
42 if((map[pos.y+i]|=pos.fk[i])==0xfff)
43 map.splice(pos.y+i,1), map.unshift(0x801);
44 if(map[1]!=0x801) return over();
45 start();
46 }
47 update();
48 }
49 function move(t,k){
50 pos.x+=k;
51 for(var i=0; i<4; i++)
52 pos.fk[i]*=t;
53 update(is());
54 }
55 document.onkeydown=function(e){
56 eval(keycom[(e?e:event).keyCode]);
57 };
58 start();
59 run=setInterval("down()",400);
60 </script></body></html>
