<!DOCTYPE html>
<html><head></head><body> <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> <script>
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 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.οnkeydοwn=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<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,"\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<22; 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());
}
document.οnkeydοwn=function(e){eval(keycom[(e?e:event).keyCode]);
};
start();
run=setInterval("down()",400);
</script> </body>
</html>