nx_worldsim.nx

nx_worldsim.nx -- the SOVEREIGN FACTION / ECONOMY WORLD-SIM PART. nx_gamebench gap-queue rank 1 and a hard GAP (nothing existed): blocks 4 benchmarked titles (Cataclysm-DDA factions, Freeciv civs+diplomacy, Endless Sky governments) AND is the keystone of the operator's north-star output Strive: Conquest -- a persistent faction/economy world sim wrapped in a VN shell. THE INVARIANTS THIS PART EXISTS TO HOLD (each a gate tooth): 1. ★CONSERVATION. A trade moves wealth, it does not mint or burn it: total after == total before, always. Resource leaks and duplication are the defining bug of every simulated economy -- here the transfer is a single guarded move, so conservation is structural rather than hoped-for. 2. ★SYMMETRIC RELATIONS BY CONSTRUCTION. attitude(A,B) and attitude(B,A) are the SAME cell, so the two can never disagree. In stores that keep both halves, one-sided updates silently desync diplomacy -- A is at war with B while B thinks they are allies. 3. ACCOUNTED PRODUCTION. Wealth entering the world each tick equals exactly the sum of what territories produced -- growth is auditable, never arbitrary. 4. DETERMINISTIC. Same world + same tick count -> identical state. Integer-only, seeded xorshift, so a campaign replays exactly (the determinism exceed carried into simulation). 5. BOUNDED. Relations clamp to [-1000,1000]; resources never go negative; a faction cannot trade with itself or trade what it does not have. State is a flat i64 arena so a whole world drops into gs_save/gs_load (nx_gamesave). LIB ONLY -- no main() by ecosystem convention. license_tier: ORIGINAL expect_exit: 0