JS1k: The JavaScript code golfing competition

var c,d,f=Math,g=f.random,h=f.PI,j=0,k=55+g()*55,l=50,m=100,n=1,p=this,q=document,r=q.body.style;r.background="#000";r.textAlign="center";c=q.getElementById("c");c.width=500;c.height=350;d=c.getContext("2d");var s=-1,t;for(i=0;i<40;i++){t=i%5;t==0&&s++;var u="b"+i;p[u]={};p[u].b=p[u].d=t*125;g();g();p[u].a=p[u].c=160+s*5} setInterval(function(){d.clearRect(0,0,500,350);j+=3;if(j>360){j=0;k=55+g()*55}d.lineWidth=0.1;d.beginPath();d.strokeStyle="hsl("+l+", "+m+"%, 65%)";l+=0.9*n;m-=0.1*n;if(l<=50||l>=300)n=-n;var e=-1,b,o=j;for(i=0;i<40;i++){b=i%5;if(b==0){e=0;o+=12}else e++;var a=p["b"+i];if(e%2==0){if(e==0){b=a.c+f.sin(o*h/180)*k;a.a+=(b-a.a)*0.1;d.moveTo(a.b,a.a)}else if(e==4){b=a.c-f.sin(o*h/180)*k;a.a+=(b-a.a)*0.1}else if(e==2){var v=p["b"+(i-1)].b;b=p["b"+(i+1)].b;b=(v+b)/2;a.b+=(b-a.b)*0.1}(b=p["b"+(i-1)])&&e!= 0&&d.quadraticCurveTo(b.b,b.a,a.b,a.a)}else{b=a.d-f.cos(o*h/180)*k;a.b+=(b-a.b)*0.1;if(e==1)a.a+=(p["b"+(i+3)].a-a.a)*0.1;if(e==3)a.a+=(p["b"+(i-3)].a-a.a)*0.1}d.stroke()}d.restore()},30);

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