128 lines
4.2 KiB
TypeScript
128 lines
4.2 KiB
TypeScript
import type {
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ChapterState,
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GameState,
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StorySignal,
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WorldMutation,
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} from '../../types';
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function dedupeStrings(values: Array<string | null | undefined>, limit = 6) {
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return [...new Set(values.map((value) => value?.trim() ?? '').filter(Boolean))]
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.slice(0, limit);
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}
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export function resolveWorldMutations(params: {
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state: GameState;
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signals: StorySignal[];
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chapterState: ChapterState | null | undefined;
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}) {
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const currentSceneId = params.state.currentScenePreset?.id;
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const activeThreadIds = params.state.storyEngineMemory?.activeThreadIds ?? [];
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const mutations: WorldMutation[] = [];
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if (currentSceneId && params.chapterState) {
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mutations.push({
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id: `mutation:scene:${currentSceneId}:${params.chapterState.stage}`,
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mutationType: 'scene_text',
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targetId: currentSceneId,
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reason: `${params.chapterState.title}正在改写这片地界的表面气氛。`,
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relatedThreadIds: params.chapterState.primaryThreadIds,
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});
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}
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if (currentSceneId && params.signals.some((signal) => signal.signalType === 'win_battle')) {
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mutations.push({
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id: `mutation:pressure:${currentSceneId}:battle`,
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mutationType: 'enemy_pressure',
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targetId: currentSceneId,
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reason: '这一带的敌意正在因交锋结果重新聚拢。',
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relatedThreadIds: dedupeStrings(activeThreadIds, 4),
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});
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}
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if (params.signals.some((signal) => signal.signalType === 'obtain_carrier')) {
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mutations.push({
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id: `mutation:attitude:${currentSceneId ?? 'scene'}:carrier`,
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mutationType: 'npc_attitude',
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targetId: currentSceneId ?? 'scene',
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reason: '关键载体已经落到你手里，相关角色的口风会开始变化。',
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relatedThreadIds: dedupeStrings(activeThreadIds, 4),
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});
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}
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if (params.chapterState?.stage === 'climax' && currentSceneId) {
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mutations.push({
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id: `mutation:route:${currentSceneId}:climax`,
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mutationType: 'route_unlock',
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targetId: currentSceneId,
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reason: '章节高潮逼近，新的通路或对峙点开始显影。',
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relatedThreadIds: params.chapterState.primaryThreadIds,
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});
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}
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return mutations;
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}
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export function applyWorldMutationsToGameState(params: {
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state: GameState;
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mutations: WorldMutation[];
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}) {
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const knownMutations = [
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...(params.state.storyEngineMemory?.worldMutations ?? []),
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...params.mutations,
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];
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if (knownMutations.length <= 0) {
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return params.state;
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}
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const currentSceneId = params.state.currentScenePreset?.id ?? null;
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const relevantMutations = currentSceneId
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? knownMutations.filter((mutation) => mutation.targetId === currentSceneId)
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: knownMutations;
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const latestSceneMutation = relevantMutations
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.filter((mutation) => mutation.mutationType === 'scene_text')
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.at(-1);
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const pressureMutationCount = relevantMutations.filter(
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(mutation) => mutation.mutationType === 'enemy_pressure',
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).length;
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const attitudeMutation = relevantMutations
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.filter((mutation) => mutation.mutationType === 'npc_attitude')
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.at(-1);
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const currentPressureLevel =
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pressureMutationCount >= 3
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? 'extreme'
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: pressureMutationCount === 2
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? 'high'
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: pressureMutationCount === 1
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? 'medium'
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: params.state.currentScenePreset?.currentPressureLevel ?? 'low';
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return {
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...params.state,
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currentScenePreset: params.state.currentScenePreset
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? {
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...params.state.currentScenePreset,
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mutationStateText:
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[latestSceneMutation?.reason, attitudeMutation?.reason]
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.filter(Boolean)
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.join(' ')
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?? params.state.currentScenePreset.mutationStateText
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?? null,
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currentPressureLevel,
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description: [
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params.state.currentScenePreset.description,
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latestSceneMutation?.reason,
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]
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.filter(Boolean)
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.join(' '),
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npcs: params.state.currentScenePreset.npcs?.map((npc) => ({
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...npc,
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description:
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attitudeMutation && !npc.hostile
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? `${npc.description} ${attitudeMutation.reason}`
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: npc.description,
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})),
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}
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: params.state.currentScenePreset,
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};
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}
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