JS1k: The JavaScript code golfing competition

for(_='b[2*i~~+1`),__c.^.x,)};b=);c[c.fy]=n-y)/(+=sign;i--;)](=b.page(m-x/2,0,&&*o*s/30+v[=>{],gA]=*random()	30	-15b.addColorStop(=b.length/2for(i.push(a.width*sin(u)+cos(u)*k[a.height
 in c)c[i[0]+[i[6]]]=i;Ol=b%3;m=	|0;n=
	|0;f=30;v=[];v.map.call(["IRJ[QTZVVMZDQFJ?IH@M","LTLPTNTLOLOHQFRFRHTHTDMCHCEGFHIELEIHIKLNHNJPJTHVNVPSPQNN","UXV[WXXSXKWEVCUETJUMUQTTRSMRJQFOCOAQBOCMFLJKRKSMSQ"][l>b.charCodeAt(w=0)-77=qv[`~]=60v[,,]s=min(,
Rw(x_y(n-y_150<w++O(l+1)cL
.7,"#001"1,"#115"b;fc,
sS]="#fff";o=(80<w?w/4-19:1)*(1-f*f/9001/o;ff--;[l?1<l?12]:25]:0]]; in v)k=iu=PI*(y<n?n:
-n)g=-k[2]1h=k[1]2u=-PI*)/(x<m?m:-m)A=h0k.x=Ak.y=g
ba^arc(kk.y,i<q?5/2:1,2*PI^fill(_i<q-(l-1?0:2)bk,kl-2?b0]):b13216]max(.8-hypot,.8*s))/o;!f!w.7<gA](w=1ba_m~]~].y_l`]`].y^stroke(1;requestAnimationFrame(Ronmousemovew||(xX,yYO(x=y=0R()';G=/[
-^-`~]/.exec(_);)with(_.split(G))_=join(shift());with(Math)eval(_)

Zm9yKF89J2JbMippfn4rMWApLF9fYy5eLngsHyl9Ox5iPR0pOxxjW2MuGxwbZnldPRpuLXkpLygZKz1zaWduGDtpLS07KRddKBY9Yi5wYWdlFShtLXgULzIsEzAsEiYmESpvKnMvMzArEHZbDz0dPnsOXSwMHBtnQV09CypyYW5kb20oKQkzMAktMTUIHGIuYWRkQ29sb3JTdG9wKAc9Yi5sZW5ndGgvMhcGZm9yKGkFLnB1c2goBGEud2lkdGgDKnNpbih1KStjb3ModSkqa1sCYS5oZWlnaHQBBSBpbiBjKWNbaVswXStbaVs2XV1dPWk7Tw5sPWIlMzttPQMJfDA7bj0BCXwwO2Y9MzA7dj1bXTsddi5tYXAuY2FsbChbIklSSltRVFpWVk1aRFFGSj9JSEBNIiwiTFRMUFROVExPTE9IUUZSRlJIVEhURE1DSENFR0ZISUVMRUlISUtMTkhOSlBKVEhWTlZQU1BRTk4iLCJVWFZbV1hYU1hLV0VWQ1VFVEpVTVVRVFRSU01SSlFGT0NPQVFCT0NNRkxKS1JLU01TUSJdW2wMHT5iLmNoYXJDb2RlQXQodz0wKS03NxwFPXEGdgRbYAx+DAhdHAU9NjAXdgRbCCwILAhdHnM9bWluKAMsARxSDncRKHgYFF95GChuLXlfMTUwPHcrKxFPKGwrMSkcHRtjTBYSEhIBBy43LCIjMDAxIgcxLCIjMTE1IhpiOxtmYxYSEgMsARobc1NdPSIjZmZmIjtvPSg4MDx3P3cvNC0xOToxKSooMS1mKmYvOTAwCzEvbztmEWYtLTsdW2w/MTxsPw8xMl06DzI1XToPMF1dOwUgaW4gdilrPQ9pDHU9UEkqKBl5PG4/bjoBLW4pE2c9LWtbMl0CMQxoPWtbMV0CMgx1PS1QSSoUKS8oeDxtP206Ay1tKRNBPWgCMAxrLng9QRADE2sueT1nEAETG2JhFl5hcmMoax9rLnksaTxxPzUvMjoxLBIyKlBJXmZpbGwoX2k8cS0obC0xPzA6MikRYgRrLGscbC0yP2IEDzBdKTpiBA8xMwwPMgwPMTZdC21heCgSLjgtaHlwb3QULBkuOCpzKSkvbzshZhEhdxEuNzwbZ0FdESh3PTEcBQYbYmEWXxttFn5dH35dLnlfG2wWYF0fYF0ueV5zdHJva2UoCzE7cmVxdWVzdEFuaW1hdGlvbkZyYW1lKFIeb25tb3VzZW1vdmUOd3x8KHgVWCx5FVkeTyh4PXk9MBxSKCknO0c9L1sBLR9eLWB+XS8uZXhlYyhfKTspd2l0aChfLnNwbGl0KEcpKV89am9pbihzaGlmdCgpKTt3aXRoKE1hdGgpZXZhbChfKQ==

// Initialize the level
O=function(e) {
  l=e%3;
  // Randomly calculate the goal
  m = a.width * Math.random()|0;
  n = a.height * Math.random()|0;
  f = 30;
  v = [];
  // Unpack star map
  e=v.map.call([
    "IRJ[QTZVVMZDQFJ?IH@M",
    "LTLPTNTLOLOHQFRFRHTHTDMCHCEGFHIELEIHIKLNHNJPJTHVNVPSPQNN",
    "UXV[WXXSXKWEVCUETJUMUQTTRSMRJQFOCOAQBOCMFLJKRKSMSQ"
    ][l],i=>i.charCodeAt(w=0)-77);
  for (i=q=e.length/2;i--;)v.push([e[2*i 1],e[2*i], 30*Math.random()-15]);
  // Decorational small stars
  for (i=60;i--;)
    v.push([30*Math.random()-15,30*Math.random()-15,30*Math.random()-15]);
};

s = Math.min(a.width, a.height);

R = function(e) {
  if (w) {
    // We won, move automatically towards the goal and stay there
    x  = Math.sign(m-x);
    y  = Math.sign(n-y);
    if (w  >150) O(l 1);
  }
  
  // Background gradient
  e = c.createLinearGradient(0,0,0,a.height);
  e.addColorStop(.7,"#001");
  e.addColorStop(1,"#115");
  c.fillStyle = e;
  c.fillRect(0, 0, a.width, a.height);
  c.fillStyle = c.strokeStyle = "#fff";

  o=(w>80?(w/4 -19):1)*(1-f*f/900);
  c.globalAlpha = 1/o;

  if (f)f--;

  // Start with end vertex (careful with multiple levels!!)
  e = [l?l>1?v[12]:v[25]:v[0]];
  for(i in v) {
    // Apply 3D rotations
    k = v[i];
    u = Math.PI*(n-y)/(y<n?n:(a.height-n))/2;
    g = - k[2]*Math.sin(u) Math.cos(u)*k[1];
    h = k[1]*Math.sin(u) Math.cos(u)*k[2];
  
    u = -Math.PI*(m-x)/(x<m?m:(a.width-m))/2;
  
    j = h*Math.sin(u) Math.cos(u)*k[0]; 

    k.x = j * o * s / 30   a.width/2;
    k.y = g * o * s / 30   a.height/2;
  
    // Paint star
    c.beginPath();
    c.arc(k.x, k.y, i<q?5/2:1, 0, 2*Math.PI);
    c.fill();
    
    // Store it for line rendering if necessary
    if (i < q-(l-1?0:2))
      e.push(k,k);
  }
  
  // Line postprocessing
  if (l-2) {
    e.push(v[0]);
  } else {
    e.push(v[13],v[2],v[16]);
  }
  
  // The line intensity depends on the distance to the goal
  c.globalAlpha = Math.max(0,.8-Math.hypot(m-x, n-y)/(.8*s))/o;
  
  // Are we close enough to win?
  if(!f&&!w&&c.globalAlpha>.7)w=1;

  for (i=e.length/2;i--;) {
    // Draw line
    c.beginPath();
    c.moveTo(e[2*i].x, e[2*i].y);
    c.lineTo(e[2*i 1].x, e[2*i 1].y);
    c.stroke();
  }
  c.globalAlpha = 1;
  
  requestAnimationFrame(R);
}

onmousemove = function(e) {
  // If we won, ignore input
  if (!w){
    x = e.pageX;
    y = e.pageY;
  }
};

// Initialize game
O(x=y=0);

// Render
R();

// Change function to ES6 format
// Change 2.5 to 5/2
// Minified, ES6 and packed (with Math)