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core2026/app/game-engine/src/turn/monthlyDisasterAction.ts
T

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TypeScript

import { LiteHashDRBG, RandUtil } from '@sammo-ts/common';
import {
GeneralActionPipeline,
LogCategory,
LogFormat,
LogScope,
createGeneralTriggerContext,
type GeneralActionModule,
} from '@sammo-ts/logic';
import { simpleSerialize } from '@sammo-ts/logic/war/utils.js';
import type { InMemoryTurnWorld } from './inMemoryWorld.js';
import type { MonthlyEventActionHandler } from './monthlyEventHandler.js';
type DisasterText = {
title: string;
stateCode: number;
body: string;
};
const DISASTER_TEXT_BY_MONTH: Readonly<Record<number, DisasterText[]>> = {
1: [
{ title: '<M><b>【재난】</b></>', stateCode: 4, body: '역병이 발생하여 도시가 황폐해지고 있습니다.' },
{ title: '<M><b>【재난】</b></>', stateCode: 5, body: '지진으로 피해가 속출하고 있습니다.' },
{ title: '<M><b>【재난】</b></>', stateCode: 3, body: '추위가 풀리지 않아 얼어죽는 백성들이 늘어나고 있습니다.' },
{ title: '<M><b>【재난】</b></>', stateCode: 9, body: '황건적이 출현해 도시를 습격하고 있습니다.' },
],
4: [
{ title: '<M><b>【재난】</b></>', stateCode: 7, body: '홍수로 인해 피해가 급증하고 있습니다.' },
{ title: '<M><b>【재난】</b></>', stateCode: 5, body: '지진으로 피해가 속출하고 있습니다.' },
{ title: '<M><b>【재난】</b></>', stateCode: 6, body: '태풍으로 인해 피해가 속출하고 있습니다.' },
],
7: [
{ title: '<M><b>【재난】</b></>', stateCode: 8, body: '메뚜기 떼가 발생하여 도시가 황폐해지고 있습니다.' },
{ title: '<M><b>【재난】</b></>', stateCode: 5, body: '지진으로 피해가 속출하고 있습니다.' },
{ title: '<M><b>【재난】</b></>', stateCode: 8, body: '흉년이 들어 굶어죽는 백성들이 늘어나고 있습니다.' },
],
10: [
{ title: '<M><b>【재난】</b></>', stateCode: 3, body: '혹한으로 도시가 황폐해지고 있습니다.' },
{ title: '<M><b>【재난】</b></>', stateCode: 5, body: '지진으로 피해가 속출하고 있습니다.' },
{ title: '<M><b>【재난】</b></>', stateCode: 3, body: '눈이 많이 쌓여 도시가 황폐해지고 있습니다.' },
{ title: '<M><b>【재난】</b></>', stateCode: 9, body: '황건적이 출현해 도시를 습격하고 있습니다.' },
],
};
const BOOMING_TEXT_BY_MONTH: Readonly<Partial<Record<number, DisasterText[]>>> = {
4: [{ title: '<C><b>【호황】</b></>', stateCode: 2, body: '호황으로 도시가 번창하고 있습니다.' }],
7: [{ title: '<C><b>【풍작】</b></>', stateCode: 1, body: '풍작으로 도시가 번창하고 있습니다.' }],
};
const BOOMING_RATE_BY_MONTH: Readonly<Record<number, number>> = {
1: 0,
4: 0.25,
7: 0.25,
10: 0,
};
const clamp = (value: number, min: number, max: number): number => Math.max(min, Math.min(max, value));
const resolveHiddenSeed = (world: InMemoryTurnWorld): string | number => {
const state = world.getState();
const rawSeed = state.meta.hiddenSeed ?? state.meta.seed ?? state.id;
return typeof rawSeed === 'string' || typeof rawSeed === 'number' ? rawSeed : String(rawSeed);
};
const roundLegacyIntegerColumn = (value: number): number => Math.round(value);
export const createRaiseDisasterHandler = (options: {
getWorld: () => InMemoryTurnWorld | null;
generalActionModules?: GeneralActionModule[];
}): MonthlyEventActionHandler => {
const generalPipeline = new GeneralActionPipeline(options.generalActionModules ?? []);
return (_args, environment) => {
const world = options.getWorld();
if (!world) {
return;
}
// 레거시 InnoDB의 PK scan 순서를 명시적으로 고정해 RNG 소비 순서를
// PostgreSQL의 비결정적 findMany 반환 순서에 맡기지 않는다.
const cities = world.listCities().sort((left, right) => left.id - right.id);
// 레거시는 3년 유예 판정보다 먼저 이전 재난 표시를 초기화한다.
for (const city of cities) {
if (city.state <= 10) {
world.updateCity(city.id, { state: 0 });
}
}
if (environment.startyear + 3 > environment.year) {
return;
}
const boomingRate = BOOMING_RATE_BY_MONTH[environment.month];
if (boomingRate === undefined) {
throw new Error(`Unsupported month for RaiseDisaster: ${environment.month}`);
}
const rng = new RandUtil(
new LiteHashDRBG(
simpleSerialize(resolveHiddenSeed(world), 'disater', environment.year, environment.month)
)
);
const isGood = rng.nextBool(boomingRate);
const targetCities = cities.filter((city) => {
if (city.securityMax <= 0) {
throw new Error(`RaiseDisaster requires positive securityMax (cityId=${city.id})`);
}
const securityRatio = city.security / city.securityMax;
const probability = isGood ? 0.02 + securityRatio * 0.05 : 0.06 - securityRatio * 0.05;
return rng.nextBool(probability);
});
if (targetCities.length === 0) {
return;
}
const textCandidates = isGood
? BOOMING_TEXT_BY_MONTH[environment.month]
: DISASTER_TEXT_BY_MONTH[environment.month];
if (!textCandidates || textCandidates.length === 0) {
throw new Error(`RaiseDisaster has no text candidates for month ${environment.month}`);
}
const picked = rng.choice(textCandidates);
const cityNames = targetCities.map((city) => city.name).join(' ');
world.pushLog({
scope: LogScope.SYSTEM,
category: LogCategory.HISTORY,
text: `${picked.title}<G><b>${cityNames}</b></>에 ${picked.body}`,
format: LogFormat.YEAR_MONTH,
});
const allGenerals = world.listGenerals().sort((left, right) => left.id - right.id);
for (const city of targetCities) {
const securityRatio = clamp(city.security / city.securityMax / 0.8, 0, 1);
const affectRatio = isGood ? 1.01 + securityRatio * 0.04 : 0.8 + securityRatio * 0.15;
const trust = typeof city.meta.trust === 'number' ? city.meta.trust : 0;
world.updateCity(city.id, {
state: picked.stateCode,
population: roundLegacyIntegerColumn(
isGood
? Math.min(city.population * affectRatio, city.populationMax)
: city.population * affectRatio
),
agriculture: roundLegacyIntegerColumn(
isGood
? Math.min(city.agriculture * affectRatio, city.agricultureMax)
: city.agriculture * affectRatio
),
commerce: roundLegacyIntegerColumn(
isGood ? Math.min(city.commerce * affectRatio, city.commerceMax) : city.commerce * affectRatio
),
security: roundLegacyIntegerColumn(
isGood ? Math.min(city.security * affectRatio, city.securityMax) : city.security * affectRatio
),
defence: roundLegacyIntegerColumn(
isGood ? Math.min(city.defence * affectRatio, city.defenceMax) : city.defence * affectRatio
),
wall: roundLegacyIntegerColumn(
isGood ? Math.min(city.wall * affectRatio, city.wallMax) : city.wall * affectRatio
),
meta: {
...city.meta,
trust: isGood ? Math.min(trust * affectRatio, 100) : trust * affectRatio,
},
});
if (isGood) {
continue;
}
for (const general of allGenerals.filter((candidate) => candidate.cityId === city.id)) {
const context = createGeneralTriggerContext({
general,
nation: world.getNationById(general.nationId),
worldView: {
listGenerals: () => allGenerals,
listGeneralsByCity: (cityId) =>
allGenerals.filter((candidate) => candidate.cityId === cityId),
},
rng,
});
const injuryProbability = generalPipeline.onCalcStat(context, 'injuryProb', 0.3);
if (!rng.nextBool(injuryProbability)) {
continue;
}
world.pushLog({
scope: LogScope.GENERAL,
category: LogCategory.ACTION,
generalId: general.id,
text: '<M>재난</>으로 인해 <R>부상</>을 당했습니다.',
format: LogFormat.MONTH,
});
world.updateGeneral(general.id, {
injury: clamp(general.injury + rng.nextRangeInt(1, 16), 0, 80),
crew: roundLegacyIntegerColumn(general.crew * 0.98),
atmos: roundLegacyIntegerColumn(general.atmos * 0.98),
train: roundLegacyIntegerColumn(general.train * 0.98),
});
}
}
};
};