卫戍协议：盟约 web remake — initial import
Online co-op browser remake of Arknights' Stronghold Protocol: Alliance (client-simulated combat, official waves/bonds/items/strategies, 3D board, facing wheel, operator loadout, official emotes, deployment scripts).
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// Multi-device support (desktop Chrome / Edge / Firefox / Safari, iPad and Android tablets in landscape, phones in
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// landscape ≥ 640×360 CSS px). Everything is feature-detected — never UA-sniffed:
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//
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// detectFeatures() { touch, coarse, hover, fullscreen, standalone, reducedMotion, importMaps, … } of this browser
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// installDeviceSupport() once at boot (main.js): <html> classes (sp-touch / sp-coarse / sp-hover / sp-fs /
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// sp-standalone / sp-reduced-motion / sp-no-hover / sp-rotatable), kept current when an input device or a
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// preference changes; blocks page zoom gestures (iOS Safari ignores user-scalable=no:
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// gesturestart / gesturechange are cancelled, ctrl+wheel / trackpad pinch too; touch-action in
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// css/devices.css handles the rest); re-fires `resize` once the viewport
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// settles after a rotation (iOS reports the old size for a few frames) so the field view and
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// the rem scale re-layout; keeps --sp-vh (the real visible height) for the CSS.
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// fullscreen { supported(), active(), toggle(), exit() }: Fullscreen API with the webkit-prefixed
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// variant (iPadOS / older Safari); iPhone Safari has no element fullscreen → unsupported and the
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// button hides. Android: after entering, the orientation is locked to landscape when allowed.
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// FullscreenButton HUD / title button (hidden where unsupported), follows fullscreenchange.
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// long-press a still touch of LONG_PRESS_MS on a DOM control → a synthetic `contextmenu` (= detail) when
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// the browser sends none (iOS Safari); when a handler took it (preventDefault: detail card,
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// tooltip) the click of the release is swallowed — otherwise the slow tap stays a tap.
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// reducedMotion() prefers-reduced-motion (the CSS side lives in css/theme.css + css/devices.css).
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// CSS counterpart: public/css/devices.css (safe-area insets, touch-action, overscroll, tap-target expansion).
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import { useEffect, useState } from '../../vendor/hooks.module.js';
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import { html, Icon } from './components.js';
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/** A touch held this long without moving opens the detail (contextmenu) on DOM controls. */
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export const LONG_PRESS_MS = 520;
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const LONG_PRESS_SLOP = 10;
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const mq = (win, q) => { try { return !!win.matchMedia?.(q)?.matches; } catch { return false; } };
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/**
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* Whether the SCREEN (not the viewport) is in landscape: a split-view iPad or a narrow desktop window has a portrait
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* viewport on a landscape screen — rotating would not help there. screen.orientation (Chrome, Firefox, Safari 16.4+),
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* else window.orientation (older iOS); iOS reports screen.width/height in portrait always, so no size guess there.
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* @param {any} [win]
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* @returns {boolean|null} null when unknown
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*/
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export function screenLandscape(win = globalThis) {
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try {
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const t = win.screen?.orientation?.type;
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if (typeof t === 'string' && t) return t.startsWith('landscape');
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} catch { /* ignore */ }
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const o = Number(win.orientation);
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if (win.orientation != null && Number.isFinite(o)) return Math.abs(o) === 90;
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return null;
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}
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/**
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* What this browser / device can do.
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* @param {any} [win]
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*/
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export function detectFeatures(win = globalThis) {
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const doc = win.document;
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const nav = win.navigator || {};
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const touchPoints = Number(nav.maxTouchPoints) || 0;
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const coarse = mq(win, '(any-pointer: coarse)') || mq(win, '(pointer: coarse)');
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const fine = mq(win, '(any-pointer: fine)');
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const hover = mq(win, '(any-hover: hover)') || mq(win, '(hover: hover)');
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const el = doc?.documentElement;
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const fsEnabled = !!(doc && (doc.fullscreenEnabled || doc.webkitFullscreenEnabled))
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&& !!(el && (typeof el.requestFullscreen === 'function' || typeof el.webkitRequestFullscreen === 'function'));
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let importMaps = false;
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try { importMaps = typeof win.HTMLScriptElement?.supports === 'function' && win.HTMLScriptElement.supports('importmap'); } catch { importMaps = false; }
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return {
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touch: touchPoints > 0 || coarse || 'ontouchstart' in (win || {}),
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coarse,
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fine,
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hover,
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fullscreen: fsEnabled,
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standalone: mq(win, '(display-mode: standalone)') || mq(win, '(display-mode: fullscreen)') || nav.standalone === true,
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reducedMotion: mq(win, '(prefers-reduced-motion: reduce)'),
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screenLandscape: screenLandscape(win),
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importMaps,
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broadcastChannel: typeof win.BroadcastChannel === 'function',
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pointerEvents: typeof win.PointerEvent === 'function',
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gestureEvents: typeof win.GestureEvent === 'function', // WebKit only (pinch zoom has to be cancelled by hand)
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visualViewport: !!win.visualViewport,
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};
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}
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/** The classes installDeviceSupport puts on <html> for a feature set (pure; tested). */
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export function featureClasses(f) {
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return {
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'sp-touch': !!f.touch,
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'sp-coarse': !!f.coarse,
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'sp-hover': !!f.hover,
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'sp-no-hover': !f.hover,
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'sp-fs': !!f.fullscreen,
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'sp-standalone': !!f.standalone,
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'sp-reduced-motion': !!f.reducedMotion,
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// the rotate hint (css/theme.css) is for a device you can turn: a touch screen whose screen is not in landscape —
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// never a desktop browser window that happens to be narrow, nor a split-view iPad
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'sp-rotatable': !!f.coarse && f.screenLandscape !== true,
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};
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}
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/** prefers-reduced-motion: reduce */
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export function reducedMotion(win = globalThis) { return mq(win, '(prefers-reduced-motion: reduce)'); }
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/**
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* Keep a class on <html> while a component is mounted and `on` holds (replaces CSS :has(), which Firefox ESR 115 and
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* Safari < 15.4 lack): the match screen sets sp-in-match, the connection banner sp-conn.
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* @param {string} name
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* @param {boolean} [on]
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*/
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export function useDocClass(name, on = true) {
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useEffect(() => {
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const el = globalThis.document?.documentElement;
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if (!el || !on) return undefined;
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el.classList.add(name);
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return () => el.classList.remove(name);
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}, [name, !!on]);
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}
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// ---- fullscreen ----------------------------------------------------------------------------------------------------
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export const fullscreen = {
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supported(win = globalThis) { return detectFeatures(win).fullscreen; },
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active(win = globalThis) { const d = win.document; return !!(d && (d.fullscreenElement || d.webkitFullscreenElement)); },
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async enter(win = globalThis) {
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const el = win.document?.documentElement;
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if (!el) return false;
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try {
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if (typeof el.requestFullscreen === 'function') await el.requestFullscreen({ navigationUI: 'hide' });
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else if (typeof el.webkitRequestFullscreen === 'function') el.webkitRequestFullscreen();
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else return false;
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} catch { return false; }
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// Android Chrome: a landscape game may lock the orientation while fullscreen (refused elsewhere — ignored)
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try { await win.screen?.orientation?.lock?.('landscape'); } catch { /* not allowed here */ }
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return true;
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},
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async exit(win = globalThis) {
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const d = win.document;
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try {
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if (d?.fullscreenElement && typeof d.exitFullscreen === 'function') await d.exitFullscreen();
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else if (d?.webkitFullscreenElement && typeof d.webkitExitFullscreen === 'function') d.webkitExitFullscreen();
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} catch { return false; }
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try { win.screen?.orientation?.unlock?.(); } catch { /* ignore */ }
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return true;
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},
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toggle(win = globalThis) { return this.active(win) ? this.exit(win) : this.enter(win); },
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};
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/** Fullscreen toggle (hidden where the browser has no element fullscreen, e.g. iPhone Safari). */
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export function FullscreenButton({ class: cls = '' }) {
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const [on, setOn] = useState(() => fullscreen.active());
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const [ok] = useState(() => fullscreen.supported());
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useEffect(() => {
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const d = globalThis.document;
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if (!d) return undefined;
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const upd = () => setOn(fullscreen.active());
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d.addEventListener('fullscreenchange', upd);
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d.addEventListener('webkitfullscreenchange', upd);
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return () => { d.removeEventListener('fullscreenchange', upd); d.removeEventListener('webkitfullscreenchange', upd); };
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}, []);
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if (!ok) return null;
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const label = on ? '退出全屏' : '全屏';
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return html`<button type="button" class=${`fsbtn tapx ${cls}`} aria-label=${label} title=${label} aria-pressed=${on ? 'true' : 'false'}
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onClick=${() => fullscreen.toggle()}>
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<${Icon} name=${on ? 'collapse' : 'expand'} />
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</button>`;
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}
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// ---- boot-time installation ----------------------------------------------------------------------------------------
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let installed = null;
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/**
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* Install the device handling on this page (idempotent). Returns a disposer (tests).
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* @param {any} [win]
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*/
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export function installDeviceSupport(win = globalThis) {
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if (installed) return installed;
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const doc = win.document;
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if (!doc?.documentElement) return () => {};
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const root = doc.documentElement;
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const offs = [];
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const on = (target, ev, fn, opts) => { if (!target?.addEventListener) return; target.addEventListener(ev, fn, opts); offs.push(() => target.removeEventListener(ev, fn, opts)); };
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const apply = () => {
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const cls = featureClasses(detectFeatures(win));
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for (const [k, v] of Object.entries(cls)) root.classList.toggle(k, v);
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};
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apply();
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for (const q of ['(any-pointer: coarse)', '(pointer: coarse)', '(any-hover: hover)', '(prefers-reduced-motion: reduce)', '(display-mode: standalone)']) {
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let m = null;
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try { m = win.matchMedia?.(q); } catch { m = null; }
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if (!m) continue;
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if (typeof m.addEventListener === 'function') on(m, 'change', apply);
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else if (typeof m.addListener === 'function') { m.addListener(apply); offs.push(() => m.removeListener(apply)); } // Safari < 14
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}
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// visible height (the URL bar of mobile browsers comes and goes): --sp-vh = 1 % of the real visible height
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const setVh = () => {
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const h = win.visualViewport?.height || win.innerHeight || 0;
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if (h > 0) root.style.setProperty('--sp-vh', `${h / 100}px`);
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};
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setVh();
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on(win, 'resize', setVh, { passive: true });
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on(win.visualViewport, 'resize', setVh, { passive: true });
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// rotation: the new viewport size settles a few frames late on iOS → one more resize after it settles
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let rotTimer = 0;
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const onRotate = () => {
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apply();
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clearTimeout(rotTimer);
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rotTimer = setTimeout(() => { apply(); setVh(); try { win.dispatchEvent(new win.Event('resize')); } catch { /* ignore */ } }, 350);
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};
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on(win, 'orientationchange', onRotate);
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on(win.screen?.orientation, 'change', onRotate);
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// no page zoom while playing (iOS Safari ignores user-scalable=no): pinch gestures and ctrl+wheel are cancelled
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const cancel = (e) => { if (e.cancelable) e.preventDefault(); };
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on(doc, 'gesturestart', cancel, { passive: false });
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on(doc, 'gesturechange', cancel, { passive: false });
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on(doc, 'gestureend', cancel, { passive: false });
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on(doc, 'wheel', (e) => { if (e.ctrlKey && e.cancelable) e.preventDefault(); }, { passive: false });
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// (double-tap zoom and two-finger pinch on Chromium / Firefox / iOS 13+: `touch-action` in css/devices.css — no
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// scroll-blocking touchmove listener, so lists keep scrolling smoothly)
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// long-press = detail on DOM controls: Android fires `contextmenu` on a long press by itself, iOS Safari never does.
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// A touch held still for LONG_PRESS_MS without a native contextmenu gets a synthetic one (the shop cards, reward cards
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// and the fallback board open their detail cards on it), and the click the release would cause is swallowed. The field
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// canvas handles its own long-press (render/drag.js) and is skipped.
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const lp = { timer: 0, x: 0, y: 0, target: null, native: false, fired: false, swallowUntil: 0 };
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const lpCancel = () => { clearTimeout(lp.timer); lp.timer = 0; lp.target = null; };
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on(doc, 'pointerdown', (e) => {
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lpCancel();
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lp.fired = false;
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if (e.pointerType !== 'touch' || !(e.target instanceof win.Element)) return;
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if (e.target.closest('canvas, .gm__field, .fwheel, .ewheel__viewport, input, textarea, select, [contenteditable="true"]')) return;
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lp.x = e.clientX; lp.y = e.clientY; lp.target = e.target; lp.native = false;
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lp.timer = setTimeout(() => {
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const t = lp.target;
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lp.timer = 0;
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if (!t || lp.native || !t.isConnected) return;
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// Only a HANDLED long press (a detail card / a tooltip took it: the handler called preventDefault) swallows the
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// release. A slow tap on a control without a long-press meaning (准备就绪, 撤退, 出售 …) stays a tap — iOS Safari
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// still sends its click, and swallowing it made those buttons ignore any tap held ≥ LONG_PRESS_MS.
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try {
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const ev = new win.MouseEvent('contextmenu', { bubbles: true, cancelable: true, clientX: lp.x, clientY: lp.y, button: 2, buttons: 0 });
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lp.fired = t.dispatchEvent(ev) === false || ev.defaultPrevented === true;
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} catch { lp.fired = false; }
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}, LONG_PRESS_MS);
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}, { passive: true, capture: true });
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on(doc, 'pointermove', (e) => { if (lp.timer && Math.hypot(e.clientX - lp.x, e.clientY - lp.y) > LONG_PRESS_SLOP) lpCancel(); }, { passive: true, capture: true });
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// the release of a long press (however long it was held) is not a tap: the click that follows it is swallowed
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on(doc, 'pointerup', () => { if (lp.fired) { lp.fired = false; lp.swallowUntil = Date.now() + 700; } lpCancel(); }, { passive: true, capture: true });
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on(doc, 'pointercancel', () => { lp.fired = false; lpCancel(); }, { passive: true, capture: true });
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on(doc, 'contextmenu', (e) => { if (e.isTrusted) lp.native = true; }, { capture: true });
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on(doc, 'click', (e) => {
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if (lp.swallowUntil && Date.now() < lp.swallowUntil) { lp.swallowUntil = 0; e.preventDefault(); e.stopPropagation(); }
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}, { capture: true });
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installed = () => { for (const off of offs.splice(0)) { try { off(); } catch { /* ignore */ } } clearTimeout(rotTimer); installed = null; };
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return installed;
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}
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