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史上最牛逼的javascript俄罗斯方块，63行代码搞定啊

2024-07-07 10:28:55   226人阅读

<!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 domain="www.zuidaima.com";
	var author="zuidaima";
	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.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<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.onkeydown=function(e){
	    eval(keycom[(e?e:event).keyCode]);
	};
	start();
	run=setInterval("down()",400);
	</script></body></html>


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