mmcghen
721acbd1aa
Godot 4.7 C# world simulation per SPEC.md (with 2026-07-21 amendments). 15 NPCs, 5-state machine, demand-driven work, soul-imprint triad data model, seasons with winter frost, granary, need-based gift economy, selfish-soul contrast wiring, daily/per-villager/gift CSV logging. FINDINGS.md documents the four soak experiments: the dead paradise, the buffers winning, the emergent hungry gap, and the contrast test proving the four-town thesis (and that selfishness wins until the soul-consequence layer exists). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
65 lines
2.5 KiB
C#
65 lines
2.5 KiB
C#
namespace WorldSim;
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/// <summary>
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/// Trade evaluation and execution (SPEC §9). South MVP: generous, voluntary,
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/// no currency — a gift economy where the ratio favors the receiver.
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///
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/// Soul consequences: a generous completed exchange eases both parties'
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/// imprints (external perception — the world pressed kindly on them).
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/// Later soul types change the ratio logic only; the mechanism is shared.
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/// </summary>
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public static class TradeSystem
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{
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/// <summary>Trades since the last daily stats snapshot.</summary>
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public static int TradesToday;
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/// <summary>
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/// Need-based: the trigger is a person in need, not an inventory gap.
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/// Food flows to the hungry first; raw material surplus vs. genuine
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/// lack remains as a fallback.
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/// </summary>
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public static bool CanTrade(Npc giver, Npc receiver, out MaterialKind material)
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{
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material = MaterialKind.Food;
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// The ungenerous do not give. Not from an empty pack — from a full one.
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if (giver.Soul.Generosity < 0.3f) return false;
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giver.Inventory.TryGetValue(MaterialKind.Food, out float giverFood);
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receiver.Inventory.TryGetValue(MaterialKind.Food, out float receiverFood);
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if (receiver.Nourishment < 0.6f && receiverFood < 2f && giverFood > 3f)
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return true;
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foreach (var kv in giver.Inventory)
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{
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bool receiverLacks = !receiver.Inventory.TryGetValue(kv.Key, out float has) || has < 2f;
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if (kv.Value > 5f && receiverLacks) { material = kv.Key; return true; }
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}
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return false;
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}
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public static void Execute(Npc giver, Npc receiver, MaterialKind material)
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{
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TradesToday++;
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// Generosity decides how much of the surplus is given.
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float surplus = giver.Inventory[material] - 2f;
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float given = surplus * giver.Soul.Generosity;
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giver.Inventory[material] -= given;
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receiver.Inventory.TryGetValue(material, out float has);
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receiver.Inventory[material] = has + given;
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StatsLogger.LogGift(giver, receiver, material, given);
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// The kindness lands on both atmospheres — gently.
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giver.Imprint.ExternalPerception -= 0.002f;
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receiver.Imprint.ExternalPerception -= 0.002f;
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giver.Imprint.Clamp();
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receiver.Imprint.Clamp();
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// TODO(Week 3): soul-imprint-weighted PARTNER selection (trusted vs
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// tainted history) — the constrained-emergence reference pattern (SPEC §7).
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}
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}
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