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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Dupre Night Watch — idle-stage screensaver prototype 1</title>
<style>
:root{
--ground:#151311; --panel:#100f0f; --well:#0a0c0d; --raise:#1a1917;
--silver:#bfc4d0; --cream:#f3e7c5; --steel:#969385; --dim:#7c838a;
--slate:#424f5e; --slate-hi:#54677d; --wash:#2c2f32;
--pass:#74932f; --fail:#cb6b4d;
--phos:#7fe0a0; --phos-dim:#1c3626; --vfd:#63e6c8;
--sevgrn:#57d357; --sevred:#e2543f; --sevoff:#1a1613;
--jewel-r:#ff5b45; --jewel-a:#ffb43a; --jewel-g:#6fce33;
--gold:#e2a038; --gold-hi:#ffbe54;
--amber-grad-top:#f2c76a; --amber-grad-mid:#d29638; --amber-grad-bot:#8f671f;
--amber-edge:#7d5c16; --amber-warn:#f0b552;
--glow-hi:255,190,84; --glow-lo:226,160,56;
--mono:"BerkeleyMono Nerd Font","Berkeley Mono",monospace;
--pulse-rate:1s;
}
* { box-sizing: border-box; }
body {
margin: 0; min-height: 100vh; background: #050505;
color: var(--silver); font-family: var(--mono);
display: flex; flex-direction: column; align-items: center;
gap: 10px; padding: 24px;
zoom: 1.7;
cursor: none; /* it's a screensaver */
}
.board {
display: grid;
grid-template-columns: repeat(4, auto);
gap: 14px 18px;
align-items: center;
justify-items: center;
}
.cell {
background: linear-gradient(180deg, #16140f, #0e0d0b);
border: 1px solid #262320;
border-radius: 10px;
padding: 8px 10px 6px;
display: flex; flex-direction: column; align-items: center; gap: 4px;
}
/* kit instruments are spans with fixed CSS sizes; a flex host blockifies
them (the gallery's card grid does this implicitly) */
.cell > div:first-child { display: flex; justify-content: center; }
.cell .lbl {
color: var(--steel); font-size: 8px; letter-spacing: 0.22em;
text-transform: uppercase;
}
.wide { grid-column: span 2; }
.masthead {
color: var(--steel); font-size: 10px; letter-spacing: 0.35em;
text-transform: uppercase; padding-bottom: 2px;
}
.masthead b { color: var(--gold); font-weight: 400; }
</style>
</head>
<body>
<div class="masthead"><b>DUPRE</b> · NIGHT WATCH</div>
<div class="board" id="board"></div>
<script src="widgets.js"></script>
<script>
const cell = (label, span) => {
const c = document.createElement("div");
c.className = "cell" + (span ? " wide" : "");
const host = document.createElement("div");
c.appendChild(host);
const l = document.createElement("div");
l.className = "lbl"; l.textContent = label;
c.appendChild(l);
document.getElementById("board").appendChild(c);
return host;
};
/* ---- top row: timekeeping ---------------------------------------------- */
const flap = DUPRE.splitFlap(cell("local time", true), {
cells: 5, chars: " 0123456789:", flapMs: 70, animate: true,
});
const clock = DUPRE.analogClock(cell("movement"));
const seg = DUPRE.sevenSeg(cell("min : sec"));
/* ---- second row: watchstanding ----------------------------------------- */
DUPRE.radarSweep(cell("scan"), { contacts: [[40, .5], [150, .72], [265, .38], [330, .6]] });
const scope = DUPRE.scope(cell("trace"));
const strip = DUPRE.stripChart(cell("drift"), { samples: 60, value: 0.5 });
const eq = DUPRE.eqBars(cell("spectrum"), { bands: 11, cells: 9 });
/* ---- third row: machine room ------------------------------------------- */
const vu = DUPRE.vuPair(cell("programme"));
const blinken = DUPRE.blinkenlights(cell("core"));
const tape = DUPRE.tapeCounter(cell("elapsed"), { value: 0, wheels: 6, redFrom: 4 });
const lamps = DUPRE.statusLamps(cell("systems"), { states: [0, 0, 1, 0, 4] });
/* ---- bottom row: comms + orders ---------------------------------------- */
DUPRE.voiceLoop(cell("loops"));
const marquee = DUPRE.vfdMarquee(cell("wire", true), {
width: 200,
msgs: [
"DUPRE NIGHT WATCH · ALL SYSTEMS NOMINAL",
"IDLE PIPELINE ARMED · DIM 5 · LOCK 7 · DPMS 10",
"NEXT ORDER ON THE TELEGRAPH · STAND EASY",
],
});
const tele = DUPRE.telegraphIndicator(cell("engine order"), {
states: ["AHEAD", "HALF", "SLOW", "STOP", "STAND BY", "FULL"], index: 3,
});
/* ---- the page owns the clock (tick contract) ---------------------------- */
let last = { m: -1 };
const timeTick = () => {
const d = new Date();
clock.set(d.getHours(), d.getMinutes(), d.getSeconds());
seg.set(d.getMinutes() * 60 + d.getSeconds());
if (d.getMinutes() !== last.m) {
last.m = d.getMinutes();
const hh = String(d.getHours()).padStart(2, "0");
const mm = String(d.getMinutes()).padStart(2, "0");
flap.setText(hh + ":" + mm);
}
};
timeTick();
setInterval(timeTick, 1000);
/* signals: slow random walks + a breathing sine */
let vl = 0.4, vr = 0.5, ph = 0, driftV = 0.5;
setInterval(() => {
vl = Math.max(0.05, Math.min(0.95, vl + (Math.random() - 0.5) * 0.16));
vr = Math.max(0.05, Math.min(0.95, vr + (Math.random() - 0.5) * 0.16));
vu.set(vl, vr);
eq.set(Array.from({ length: 11 }, (_, i) =>
Math.max(0, Math.min(1, (vl + vr) / 2 + Math.sin(ph + i * 0.7) * 0.3 + (Math.random() - 0.5) * 0.2))));
}, 110);
setInterval(() => {
ph += 0.25;
const n = 64;
scope.set(Array.from({ length: n }, (_, i) =>
Math.sin(ph + (i / n) * Math.PI * 4) * (0.5 + 0.3 * Math.sin(ph * 0.13))), 6.2);
}, 90);
setInterval(() => {
driftV = Math.max(0.08, Math.min(0.92, driftV + (Math.random() - 0.5) * 0.09));
strip.push(driftV);
}, 450);
setInterval(() => blinken.tick(), 260);
setInterval(() => marquee.tick(), 40);
let elapsed = 0;
setInterval(() => tape.set(++elapsed), 1000);
/* the watch changes: a lamp flickers its state every so often, and every
couple of minutes the telegraph rings a new order */
setInterval(() => {
const i = Math.floor(Math.random() * 5);
lamps.set(i, Math.random() < 0.7 ? 0 : Math.random() < 0.5 ? 1 : 4);
}, 4200);
setInterval(() => tele.set(Math.floor(Math.random() * 6)), 120000);
</script>
</body>
</html>
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