rpg-mcp

import { Nation } from '../../schema/nation.js'; import { Region } from '../../schema/region.js'; import { DiplomacyRepository } from '../../storage/repos/diplomacy.repo.js'; export class FogOfWar { constructor( private diplomacyRepo: DiplomacyRepository ) { } filterWorldState( viewerNationId: string, allNations: Nation[], allRegions: Region[] ): { nations: Partial<Nation>[]; regions: Region[] } { // 1. Identify visible regions // Visible if: Owned by viewer OR Adjacent to owned region OR Owned by ally // const ownedRegions = allRegions.filter(r => r.ownerNationId === viewerNationId); const allies = allNations.filter(n => { if (n.id === viewerNationId) return false; const rel = this.diplomacyRepo.getRelation(viewerNationId, n.id); return rel?.isAllied; }); const allyIds = new Set(allies.map(a => a.id)); const visibleRegionIds = new Set<string>(); // Add owned and allied regions for (const r of allRegions) { if (r.ownerNationId === viewerNationId || (r.ownerNationId && allyIds.has(r.ownerNationId))) { visibleRegionIds.add(r.id); } } // Add adjacent to owned (Naive adjacency: distance check or grid check) // Since we don't have a graph yet, we'll use a simple distance heuristic if coordinates exist // Or for MVP, just reveal everything but hide DETAILS of nations. // The spec says: "if not adjacent and not allied: hide exact GDP..." // Let's implement the Nation masking first, as that's the critical part for LLMs. const maskedNations = allNations.map(nation => { if (nation.id === viewerNationId) return nation; // See self fully const isAlly = allyIds.has(nation.id); // Check adjacency (do we share a border?) // We need a way to check border. // For MVP, let's assume if we see any of their regions, we have some info. const hasContact = isAlly; // Simplified if (hasContact) { // Allies see almost everything except private memory // eslint-disable-next-line @typescript-eslint/no-unused-vars const { privateMemory, ...publicData } = nation; return publicData; } else { // Strangers/Enemies see fuzzy data return { id: nation.id, worldId: nation.worldId, name: nation.name, leader: nation.leader, ideology: nation.ideology, publicIntent: nation.publicIntent, // Hide exact stats aggression: this.fuzz(nation.aggression), trust: this.fuzz(nation.trust), paranoia: this.fuzz(nation.paranoia), gdp: this.fuzz(nation.gdp), // Hide resources completely or fuzz them? Spec says "hide exact resource amounts" resources: { food: this.fuzz(nation.resources.food), metal: this.fuzz(nation.resources.metal), oil: this.fuzz(nation.resources.oil) }, // Hide relations? Maybe show public alliances? relations: {}, // Hide their private opinion map createdAt: nation.createdAt, updatedAt: nation.updatedAt }; } }); return { nations: maskedNations, regions: allRegions // For now, map is fully visible, just ownership might be stale? // Actually spec says "Fog-of-war (no perfect info)". // Usually map geography is known, but maybe not units (we have no units). // So regions are fine to show. }; } private fuzz(value: number): number { // Round to nearest 10 or 100? if (value < 100) return Math.round(value / 10) * 10; return Math.round(value / 100) * 100; } }