JS1k: The JavaScript code golfing competition

for(_='+1~c.X;XfW00Ve(U[iR),QQXP,iPl(OR]N0>AN?KXfillJ=1HGH6VFonkeyDMath.=[0];0",Style=Pstroke++)=0;random()+H0*-5Xba(Pm(E0,5f:i+Y}J"#f1080);R~],i~Interval(.push(5b:i-Y,c:for(	&&(2Vfunction.slicUYn.addColorStop(]OI5i,8,Y,4*B%360*3/,L)("#
	i in c)cR[0]+R[6]]]=cN;M=;F;E=[M];I=[G];AoHE3;kp=T=B=S=CYH2;L=6; Ub){	ii<b;i.01>SH5QM+C+S,G-C-S,>MM=Q16V<GFQG>MEMQIGQv=.99<?1:.5>v*=-1QAvQC+HE-6,S=0)}Ddown=Dup=(b){k[b.which]=b.type[5]};Ut=set(){n=XcL("#320"1,"#V0"nWc(192	i>i;iif(NOEPm(IR
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99AN){var b=o,a=K{a:EN-8+EN~6+:{a:IN-8-IN~6-;a.a>o+48||a.c<b||248<a.b||>a.f?(fXba(QKXeUEN+:XeUIN-,J()):(AN=p}db";k[37]o-=Yk[39]o+=Yif(o<E[]-8||o>I[]-40)TH,0cleartb=T?"AAhgZhwYTgA=":15>B?"GBiBfhg8ZsM=":"GBhCfhg85wA=";	a12>a;a	var d8>d;datob(b).charCodeAt(a)&pow(2,d)&&Xfc(o+d*L,+a*L,L,L30==B++B=0ff"Wont="60px c"Wx(1E3*p,5E=EI=IA=AUY)},16';G=/[^ -CEGILMSTY-}]/.exec(_);)with(_.split(G))_=join(shift());eval(_)

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/*
     * Inheritance... by Jason "--jp" Plackey
     * jp [at] chicagowebexperts [dot] com
     *
     * For JS1k 2018 - The Volatile Coin Mine
     * Final packed entry size is 1023b.
     *
     * "There's gold in them thar hills!"
     *
     * While mining for gold coins, you've unfortunately
     * slipped (or were you pushed?), and you're now
     * plummeting to your death.
     *
     * You're gonna die, no doubt about it...  so you
     * might as well leave your widow a sizable
     * inheritance!  Grab as many coins as you can before
     * you go splat.
     * 
     */

    M = 200;
    O = 1600;
    N = [M];
    P = [O];
    $ = [0];
    o = 1000;
    k = [0];
    K = 0;
    U = 0;
    F = 0;
    T = 0;
    p = 0;
    V = 12;
    L = 6;

    function iR(M, O) {
        return !(O.M > M.O || O.O < M.M || O.N > M.P || O.P < M.N);
    }

    function nP(c) {
        for (i = 0; i < c; i++) {
            if (Math.random() < 0.01) { U = 15; }
            M += (Math.random() * 10) - 5 + K + U;
            O += (Math.random() * 10) - 5 - K - U;
            if (M < 200) M = 200;
            if (O > 1600) O = 1600;
            if (O > M) {
                N.push(M);
                P.push(O);

                v = Math.random() > 0.99 ? 1 : 0;
                if (Math.random() < 0.5) v *= -1;
                $.push(v);

                K += 1E-6;
                U = 0;
            }
        }
    }

    function s(M, N) {
        N = '';
        M.forEach(e => { N += String.fromCharCode(e); });
        return N;
    }

    function bmp() {
        if (k[37]) { o -= V; }
        if (k[39]) { o += V; }

        if (o < N[200] - 8 || o > P[200] - 40) {
            T = 1;
            c.fillStyle = '#f00';
            clearInterval(t);
        }

        var pattern = T ? 'AAhgZhwYTgA=' : (F < 15) ? 'GBiBfhg8ZsM=' : 'GBhCfhg85wA=';

        for (var y = 0; y < 12; y++) {
            for (var x = 0; x < 8; x++) {
                var ch = atob(pattern).charCodeAt(y);
                if (ch & (2 ** x)) {
                    c.fillRect(o + (x * L), 200 + (y * L), L, L);
                }
            }
        }

        if (F++ == 30) { F = 0; }
    }

    onkeydown = onkeyup = e => { k[e.which] = (e.type[5]); }
    nP(1080);

    t = setInterval(e => {
        n = c.createLinearGradient(0, 0, 0, 1080);
        n.addColorStop(0, '#320');
        n.addColorStop(1, '#000');
        c.fillStyle = n;
        c.fillRect(0, 0, 1920, 1080);

        for (i = 0; i < 1080; i++) {
            c.beginPath();
            c.moveTo(N[i], i);
            c.lineTo(N[i + 1], i + 1)
            c.moveTo(P[i], i);
            c.lineTo(P[i + 1], i + 1)
            c.stroke();

            c.strokeStyle = '#000';
            c.beginPath();
            c.moveTo(N[i + 1], i);
            c.lineTo(P[i + 1], i + 10);
            c.stroke();
            c.strokeStyle = '#990';

            if ($[i]) {
                var gr = { M: o, N: 200, O: o + 48, P: 248 };
                if ($[i] < 0) {
                    var cr = { M: N[i] - 8 + 50, N: i - V, O: N[i] + 16 + 50, P: i + V };
                } else {
                    var cr = { M: P[i] - 8 - 50, N: i - V, O: P[i] + 16 - 50, P: i + V };
                }

                if (iR(gr, cr)) {
                    $[i] = 0;
                    p++;
                } else {
                    c.fillStyle = '#ff0';
                    c.beginPath();
                    ($[i] < 0) ? (c.ellipse(N[i] + 50, i, 8, V, ((F * 4) % 360) * 3 / 200, 0, L)) :
                        (c.ellipse(P[i] - 50, i, 8, V, ((F * 4) % 360) * 3 / 200, 0, L));

                    c.fill();
                }
            }
        }

        c.fillStyle = '#fdb'; bmp();

        c.fillStyle = '#fff';
        c.font = '60px c';
        c.fillText(p * 1000, 50, 200);

        N = N.slice(V);
        P = P.slice(V);
        $ = $.slice(V);

        nP(V);
    }, 16);