JS1k: The JavaScript code golfing competition

for(_='for(~){~L](K),Jc[c.HJHlKG-WGI,FHfy]=E9,D1,D-7,3,%B/M1]*M*2,0,--1-t,t/9==m?2*W+-6,&&],Jc.fill(+n[k+--;)A[v++]	=1=(1-Math.cos(c.save(J","#HtaKG	+M,	+R+	*U
~g in c)c[g[0]+[g[6]]]=g;~p=[5,5,5,4,1V=5W0BIew=window,n=new Uint8Array(IJw.crypto.getRandomValues(nJw=w.innerWidth,A=[7,-1D---4,1C=["#A87754f96C53fffccc799"o=[e=d=s=i=V;i~g=I;gy=i/B|l=g/B|k=y*l,R=i=gM))/u-M,RR))/v-R,v=n[k]*u*vvW]*u*RR,o[s++]=v<180?0:(v-180)/7;setInterval(function(Ls=w/(I+VJt=e%Da.width=w,b.style.background="#635",c.scale(s,sJD3*WJE"#568",HbaKG-WG9*W,3*FFWG0J9*W-WJm=4;--m;L2J1V+B,BJi=0;i++<V;Lg12:W;g{~k=i*I+g+(3d:dJ2(k+=WJf=3o[k]?0:m,hp[1(i<=6?i:15-i)+g]:o[ks=o[3i*I+d+g:kr,s>1(sJv=U=M=R=f<3(r=U=4*-h,f(M=4R=-160+h,s=h||(r=0)));rEC[f+(v?1:0)HgA]-s/HbaK



);-D1)}1B:9*1-9:-4)}HreK)}e++,d=e/9|0},B);';G=/[^ -CIM-}]/.exec(_);)with(_.split(G))_=join(shift());eval(_)

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

p = [0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0,
       0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0,
       0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0,
       0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0,
       0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0,
       0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0,
       0, 0, 0, 1, 2, 2, 2, 2, 2, 2, 1, 0,
       5, 2, 2, 2, 3, 3, 5, 5, 4, 3, 2, 1
   ]

   V = 50
   H = 100
   B = 10
   D = 1000
   w = window
   n = new Uint8Array(D)
   w.crypto.getRandomValues(n)
   w = w.innerWidth

   A = [0, -6, 1,
       9, -7, 1,
       7, -11, 1, -2, -10, 1,
       0, 0, 0,
       9, -1, 0,
       9, -7, 1,
       0, -6, 1,
       0, 0, 0, -2, -4, 0, -2, -10, 1,
       0, -6, 1
   ]

   C = [
       "#A87", "#754", //0-mountains
       "#f96", "#C53", //3-plane
       "#fff", "#ccc", //1-clouds
       "#799" //2-water
   ]

   o = []
   T = S = s = 0
   i = V
   while (i--) {
       j = D
       while (j--) {
           y = (i / B) | 0
           x = (j / B) | 0
           k = y * H + x
               //F&E will be less than 3.333 - good approximation for PI
           F = (i % B) / 3
           E = (j % B) / 3
           E = (1 - Math.cos(E)) / 2
           u = 1 - E
           F = (1 - Math.cos(F)) / 2
           v = 1 - F
           v = n[k] * u * v + n[k + 1] * E * v + n[k + H] * u * F + n[k + H + 1] * E * F
           o[s++] = v < 180 ? 0 : (v - 180) / 7
       }
   }

   setInterval(function() {
       s = w / (D + V)
       t = T % 9
       a.width = w
       b.style.background = '#635'
       c.save()
       c.scale(s, s)
       c.translate(9, H * 3)

       c.fillStyle = "#568"
       c.beginPath()
       c.lineTo(0, -H * 2)
       c.lineTo(H * 9, -H * 3)
       c.lineTo(D, -H)
       c.lineTo(D, H)
       c.lineTo(0, 0)
       c.fill()

       c.save()
       c.translate(H * 9 - t, t / 9 - H)

       c.save()
       z = 4
       while (--z) {
           if (z == 2) c.translate(-t, t / 9)
           if (z == 1) c.translate(V + B, B)

           i = 0
           while (i++ < V) {
               j = z == 1 ? 12 : H
               while (j--) {
                   k = i * D + j + (z == 3 ? S : S * 2)

                   if (z == 2) k += H
                   f = (z == 3 && o[k]) ? 0 : z
                   h = z == 1 ? p[(i <= 6 ? i : 15 - i) * 12 + j] : o[k]
                   s = o[z == 3 ? i * D + H + S * 2 + j : k]

                   r = 1
                   if (s > 1) s = 1
                   v = G = E = F = 0

                   if (f < 3) {
                       r = 3
                       G = -h * 4

                       if (f) {
                           E = 40
                           F = -160 + h * 2
                           s = 0
                           if (!h) r = 0
                       }
                   }

                   while (r--) {
                       c.fillStyle = C[f * 2 + (!v ? 0 : 1)]
                       c.globalAlpha = 1 - s / 2
                       c.beginPath()
                       c.lineTo(A[v++] + E, A[v++] + F + A[v++] * G)
                       c.lineTo(A[v++] + E, A[v++] + F + A[v++] * G)
                       c.lineTo(A[v++] + E, A[v++] + F + A[v++] * G)
                       c.lineTo(A[v++] + E, A[v++] + F + A[v++] * G)
                       c.fill()
                   }
                   c.translate(-9, 1)
               }
               c.translate(z == 1 ? H + B : H * 9 + 2, z == 1 ? -9 : -H + 4)
           }
           c.restore()
       }

       T++
       S = (T / 9) | 0
   }, B)