Scaffold multi-screen navigation — rename Game to Ledger
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otivm
263
src/screens/Ledger.jsx
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263
src/screens/Ledger.jsx
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import { useState, useEffect, useRef } from 'react'
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import { ROUTES, WAYPOINTS, OTIUM_DURATION_MS } from './constants.js'
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import {
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applyDispatch,
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applyDispatchCost,
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applyOtium,
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getNewJournalEntry,
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getSeenJournalEntries,
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isRouteUnlocked,
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getChapter,
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} from './gameState.js'
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const CHAPTERS = ['ostia', 'capua', 'brundisium', 'carthago', 'alexandria']
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export default function Game({ state, onStateChange }) {
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const [selectedRoute, setSelectedRoute] = useState(null)
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const [dispatch, setDispatch] = useState(null) // { routeId, startMs, durationMs }
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const [otium, setOtium] = useState(null) // { startMs }
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const [message, setMessage] = useState('')
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const [journal, setJournal] = useState(getSeenJournalEntries(state))
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const [newEntryKey, setNewEntryKey] = useState(null)
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const tickRef = useRef(null)
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const msgRef = useRef(null)
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function showMessage(text, dur = 3500) {
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setMessage(text)
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clearTimeout(msgRef.current)
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msgRef.current = setTimeout(() => setMessage(''), dur)
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}
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// Game tick — 250ms
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useEffect(() => {
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tickRef.current = setInterval(() => {
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const now = Date.now()
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if (dispatch) {
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const elapsed = now - dispatch.startMs
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if (elapsed >= dispatch.durationMs) {
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// Dispatch complete
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setDispatch(null)
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const entry = getNewJournalEntry(state, dispatch.routeId)
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const newState = applyDispatch(state, dispatch.routeId)
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const route = ROUTES.find((r) => r.id === dispatch.routeId)
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showMessage(`Galley returned. +${route.profit} denarii.`)
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if (entry) {
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setJournal((j) => [entry, ...j])
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setNewEntryKey(`${dispatch.routeId}-${newState.route_dispatches[dispatch.routeId]}`)
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setTimeout(() => setNewEntryKey(null), 5000)
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}
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setSelectedRoute(null)
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onStateChange(newState)
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}
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}
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if (otium) {
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const elapsed = now - otium.startMs
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if (elapsed >= OTIUM_DURATION_MS) {
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setOtium(null)
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const newState = applyOtium(state)
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const gain = newState.aut - state.aut
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showMessage(`Otium complete. +${gain} auctoritas.`)
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onStateChange(newState)
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}
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}
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}, 250)
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return () => clearInterval(tickRef.current)
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}, [dispatch, otium, state, onStateChange])
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function handleSelectRoute(routeId) {
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if (dispatch || otium) return
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if (!isRouteUnlocked(state, routeId)) return
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setSelectedRoute((prev) => prev === routeId ? null : routeId)
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}
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function handleDispatch() {
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if (!selectedRoute) { showMessage('Select a trade route first.'); return }
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if (dispatch) { showMessage('A galley is already at sea.'); return }
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if (otium) { showMessage('Finish your otium first.'); return }
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const route = ROUTES.find((r) => r.id === selectedRoute)
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if (state.den < route.cost) { showMessage('Not enough denarii for this voyage.'); return }
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const newState = applyDispatchCost(state, selectedRoute)
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onStateChange(newState)
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setDispatch({ routeId: selectedRoute, startMs: Date.now(), durationMs: route.duration_ms })
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showMessage(`Galley dispatched on ${route.from} → ${route.to}.`)
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}
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function handleOtium() {
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if (dispatch) { showMessage('Your galley is at sea. Wait for it to return.'); return }
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if (otium) return
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setOtium({ startMs: Date.now() })
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showMessage('You rest. The harbour sounds fade.')
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}
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// Progress bar values
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let progressPct = 0
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let progressLabel = ''
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let progressSub = ''
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let isOtium = false
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if (dispatch) {
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const elapsed = Date.now() - dispatch.startMs
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progressPct = Math.min((elapsed / dispatch.durationMs) * 100, 100)
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const route = ROUTES.find((r) => r.id === dispatch.routeId)
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progressLabel = `${WAYPOINTS[route.from].name} → ${WAYPOINTS[route.to].name}`
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progressSub = `${Math.round(progressPct)}%`
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} else if (otium) {
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const elapsed = Date.now() - otium.startMs
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progressPct = Math.min((elapsed / OTIUM_DURATION_MS) * 100, 100)
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progressLabel = 'resting...'
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progressSub = `${Math.round(progressPct)}%`
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isOtium = true
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}
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const chapter = getChapter(state.den, state.aut)
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const currentLocation = WAYPOINTS[CHAPTERS[chapter - 1]]
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const busy = !!dispatch || !!otium
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return (
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<div className="game">
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<header className="game-header">
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<h1 className="game-title">OTIVM</h1>
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<p className="game-subtitle">mercator romanus · anno DCCXL ab urbe condita</p>
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</header>
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<div className="journey">
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{CHAPTERS.map((id, i) => {
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const wp = WAYPOINTS[id]
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const ch = i + 1
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const cls = ch < chapter ? 'reached' : ch === chapter ? 'current' : ''
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return (
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<span key={id}>
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<span className={`journey-node ${cls}`}>{wp.name}</span>
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{i < CHAPTERS.length - 1 && (
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<span className="journey-arrow"> › </span>
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)}
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</span>
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)
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})}
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</div>
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<div className="stats">
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<div className="stat">
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<div className="stat-label">Denarii</div>
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<div className="stat-value">{Math.floor(state.den).toLocaleString()}</div>
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<div className="stat-sub">in the strongbox</div>
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</div>
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<div className="stat">
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<div className="stat-label">Auctoritas</div>
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<div className="stat-value">{Math.floor(state.aut)}</div>
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<div className="stat-sub">reputation</div>
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</div>
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<div className="stat">
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<div className="stat-label">Dispatches</div>
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<div className="stat-value">{state.dispatches}</div>
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<div className="stat-sub">completed</div>
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</div>
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<div className="stat">
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<div className="stat-label">Location</div>
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<div className="stat-value" style={{ fontSize: '0.95rem', paddingTop: '4px' }}>
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{currentLocation.name}
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</div>
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<div className="stat-sub">chapter {['I','II','III','IV','V'][chapter - 1]}</div>
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</div>
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</div>
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{(dispatch || otium) && (
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<div className="progress-wrap">
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<div className="progress-label">
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<span>{progressLabel}</span>
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<span>{progressSub}</span>
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</div>
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<div className="progress-track">
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<div
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className={`progress-fill${isOtium ? ' otium' : ''}`}
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style={{ width: `${progressPct.toFixed(1)}%` }}
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/>
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</div>
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</div>
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)}
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<div className="message">{message}</div>
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<p className="section-title">Trade routes</p>
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<div className="route-grid">
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{ROUTES.map((route) => {
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const unlocked = isRouteUnlocked(state, route.id)
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const selected = selectedRoute === route.id
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const fromWp = WAYPOINTS[route.from]
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const toWp = WAYPOINTS[route.to]
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return (
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<div
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key={route.id}
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className={`route-card${!unlocked ? ' locked' : ''}${selected ? ' selected' : ''}`}
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onClick={() => handleSelectRoute(route.id)}
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>
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<div className="route-name">{fromWp.name} → {toWp.name}</div>
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<div className="route-goods">{route.goods}</div>
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<div className="route-desc">{route.desc}</div>
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<div className="route-meta">
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<span className="route-profit">+{route.profit - route.cost} dn</span>
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<span className="route-time">{Math.round(route.duration_ms / 1000)}s</span>
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</div>
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{!unlocked && (
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<span className="route-lock">
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{state.den < route.unlock_den
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? `${route.unlock_den.toLocaleString()} dn required`
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: `${route.unlock_aut} auctoritas required`}
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</span>
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)}
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</div>
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)
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})}
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</div>
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<div className="actions">
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<button
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className="btn btn-dispatch"
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onClick={handleDispatch}
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disabled={busy || !selectedRoute}
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>
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Dispatch galley
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</button>
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<button
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className="btn btn-otium"
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onClick={handleOtium}
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disabled={busy}
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>
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Take otium
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</button>
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</div>
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<p className="section-title">Merchant's journal</p>
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<div className="journal">
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{journal.length === 0 && (
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<div className="journal-entry">
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<div className="journal-date">Day 1 · Ostia</div>
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<div className="journal-text">
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The harbour smells of pitch and ambition. I have fifty denarii
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and a single battered ledger. The factor tells me the olive route
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to Capua is open. I shall begin there, as merchants have begun
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since the first ships crossed the Tyrrhenian.
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</div>
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</div>
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)}
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{journal.map((entry, i) => {
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const key = `${entry.day}-${i}`
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const isNew = newEntryKey && i === 0
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return (
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<div key={key} className={`journal-entry${isNew ? ' new' : ''}`}>
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<div className="journal-date">{entry.day}</div>
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<div className="journal-text">{entry.text}</div>
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</div>
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)
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})}
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</div>
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<div className="token-bar">
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Your save code: <span className="token-code">{state.token}</span>
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</div>
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</div>
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)
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}
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