JS1k: The JavaScript code golfing competition

f=1E3,l=1/60,m=[],n=Math.random,q=Math.abs;b.style.textAlign="center";c.width=480;c.height=360;function r(){h=["pink","orange","red","cyan"][Math.floor(4*n())],d=2*n()-1,e=35+10*n(),g=-25.5-2.5*n();return{e:h,d:d,a:e,b:g,x:0,y:0,c:0}}function s(h,d,e){g=0.0523*d+0.9986*e;return{x:500*h/(g+f)+245.5,y:500*(0.9986*d-0.0523*e)/(g+f)+185.5}}setInterval(function(){for(h in m){d=m[h];d.x+=d.d*l;d.y+=d.a*l;d.c+=d.b*l;d.a+=40*l;if(-0.2501<=d.y){d.y=-0.25;e=0.975*d.b,g=0.975*d.d,k=-0.6*d.a;q(g)<=0.15+1E-4&&(g=0);q(e)<=0.15+1E-4&&(e=0);2.0001>=q(k)&&(k=0);d.d=g;d.a=k;d.b=e}-47>d.c&&(d.a=0,d.b=-d.b)}for(j in m)if(1E-4>=q(m[j].d*m[j].d+m[j].a*m[j].a+m[j].b*m[j].b)){m.splice(j,1);break}5>m.length&&0.97<n()&&m.push(r());m.sort(function(d,e){return e.c-d.c});a.fillStyle="black";a.fillRect(0,0,480,360);for(t in m){h=m[t];var e=20*h.x,g=20*h.y,k=20*h.c,p=s(e-5,g-5,k);j=p.x;d=p.y;e=(s(e+5,g+5,k).x-p.x)/2;a.fillStyle=h.e;a.beginPath();a.arc(j+e,d+e,e,0,6.28);a.closePath();a.fill()}},1E3*l);

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