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俄罗斯方块

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Javascript俄罗斯方块，极简代码

把玩

这是一个用 js + css 写的网页版俄罗斯方块。




源码

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 
<html>
<style>
	div {display:block;background-color:black;position:absolute;font:17px Tahoma;color:#fff;}
	span {float:left;background-color:gray;width:12px;height:12px;border:4px gray outset;margin:0 1 1 0;overflow:hidden;}
	p {float:left;width:8px;height:8px;border:2px gray outset;overflow:hidden;margin:0;padding:0}
	#main {width:375px;height:430px;display:block;background-color:gray;position:relative;}
	#body {width:241px;height:401px;left:15px;top:15px;border:1px solid #999;}
	#score {width:80px;height:24px;left:270px;top:15px;padding:4px;}
	#level {width:80px;height:24px;left:270px;top:50px;padding:4px;}
	#next {width:50px;height:50px;left:270px;top:85px;border:19px black solid;}
	#ctrl {width:80px;height:55px;left:270px;top:360px;padding:4px;text-align:center;background-color:gray}
	#ctrl button{width:80px;height:25px;}
</style>
<script>
	var G = {
		fs:[],
		fn:[],
		score:0,
		l:['#9F0','#FF3','#F33','#C0C','#33C','#0F3','#F93'],
		v:[0x801,0x801,0x801,0x801,0x801,0x801,0x801,0x801,0x801,0x801,0x801,0x801,0x801,0x801,0x801,0x801,0x801,0x801,0x801,0xFFFF],
		d:[[0xCC00],[0x4444,0xF0],[0x8C40,0x6C00],[0x4C80,0xC600],[0x44C0,0x8E00,0xC880,0xE200],[0x88C0,0xE800,0xC440,0x2E00],[0x4E00,0x8C80,0xE400,0x4C40]],
		init:function(){
			var body = document.getElementById('body');
			var next = document.getElementById('next');
			for(var i=0;i<240;i++){
				G.fs.push(body.appendChild(document.createElement("span")));
			}
			for(var i=0;i<16;i++){
				G.fn.push(next.appendChild(document.createElement("p")));
			}
			G.domScore = document.getElementById('score');
			G.domLevel = document.getElementById('level');
			document.onkeydown=function(e){G.event(e||window.event,0)};
			G.rand();
			G.next();
		},
		timeTesk:function(){
			if(G.pause)return;
			if(!G.move(G.x, G.y+1, G.t)){
				var s = 0;
				for(var i=0;i<19;i++){
					G.v[i]=G.v[i]|G.m[i];
					if(G.v[i]==0xFFF){
						for(var k=i;k>0;k--){
							G.v[k] = G.v[k-1];
						}
						G.score+=++s;
					}
				}
				G.next();
				return false;
			}
			G.draw();
			return true;
		},
		move:function(x,y,t){
			var m = [];
			for(var k=0;k<4;k++){
				m[y+k] = (G.d[G.n][t]>>(3-k)*4&0xF)<<Math.max(x,0)>>-Math.min(x,0);
				if(m[y+k] & G.v[y+k]){
					return false;
				}
			}
			G.x = x;
			G.y = y;
			G.t = t;
			G.m = m;
			G.draw();
			return true;
		},
		rand:function(){
			G.n = G._n;
			G.t = G._t;
			G.c = G._c;
			G._n = parseInt(Math.random()*G.d.length);
			G._t = parseInt(Math.random()*G.d[G._n].length);
			G._c = parseInt(Math.random()*G.l.length);
		},
		next:function(){
			G.rand();
			if(parseInt(G.score/20)!=G.level){
				G.level = parseInt(G.score/20);
				clearInterval(G.handle);
				G.handle = setInterval("G.timeTesk()",500/(G.level+1));
			}
			G.domScore.innerHTML = 'Score:'+G.score;
			G.domLevel.innerHTML = 'Level:'+G.level;
			var i = 0;
			while(!(G.d[G.n][G.t]>>i*4&0xF))i++;
			if(!G.move(3, i-3, G.t)){
				alert('Game over!');
				clearInterval(G.handle);
			}
		},
		draw:function(){
			for(var i=0;i<240;i++){
				if((G.v[parseInt(i/12)]>>(11-i%12))&0x1){
					G.fs[i].style.visibility = '';
				}else if((G.m[parseInt(i/12)]>>(11-i%12))&0x1){
					G.fs[i].style.visibility = '';
					G.fs[i].style.borderColor = G.fs[i].style.background = G.l[G.c];
				}else{
					G.fs[i].style.visibility ='hidden';
				}
			}
			for(var i=0;i<16;i++){
				if(G.d[G._n][G._t]>>(15-i)&0x1){
					G.fn[i].style.visibility = '';
					G.fn[i].style.borderColor = G.fn[i].style.background = G.l[G._c];
				}else{
					G.fn[i].style.visibility ='hidden';
				}
			}
		},
		event:function(e,t){
			switch(e.keyCode){
				case 37:
					G.move(G.x + 1, G.y, G.t);
				break;
				case 39:
					G.move(G.x - 1, G.y, G.t);
				break;
				case 38:
					G.move(G.x, G.y, (G.t + 1) % G.d[G.n].length);
				break;
				case 40:
					G.timeTesk();
				break;
				case 32:
					while(G.timeTesk());
			}
		}
	}
</script>
<body onload='G.init();'>
	<div id='main'>
		<div id='body'></div>
		<div id='score'></div>
		<div id='level'></div>
		<div id='next'></div>
		<div id='ctrl'>
			<button onclick="javascript:location.href=location.href;">New</button>
			<button onclick="javascript:this.innerHTML={'true':'Start','false':'Pause'}[G.pause=!!!G.pause];">Pause</button>
		</div>
	</div>
</body>
</html>