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LoadoutGenerator: ChooseProduct (weighted seeded draw, name-ordered) and ProductWeight; generation shares the weight

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Builds with commit 1 only once the callers move (commit 3).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Meta Vens 2026-10-16 22:10:13 +02:00
commit 3a081160b4
1 changed files with 22 additions and 3 deletions
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25
Assets/Scripts/ServerShared/LoadoutGenerator.cs
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@ -177,7 +177,7 @@ public class LoadoutGenerator
{
var (available, preferManufacturers) = AvailableProducts(filter, required);
return available.WeightedRandomElements(ref Random, entry =>
(preferManufacturers ? ManufacturerPreference(entry.product.Manufacturer) : 1) *
(preferManufacturers ? ProductWeight(entry.product) : 1) *
pow(entry.design.Shape.Coordinates.Length, sizeExponent) / // Prioritize larger items
pow(entry.design.Price, PriceExponent), // Penalize item price to a controllable degree
count);
@ -243,8 +243,8 @@ public class LoadoutGenerator
// No galaxy, or no faction, means no allegiance to filter by: every product is on offer. A fixture generates
// loadouts that way, so a test can exercise placement and products without standing up a whole galaxy; a scenario
// stage has no faction and reaches every maker. Loadouts.Materialize takes availability as a predicate; RunStart,
// the game's one preset spawner, passes this, so presets and generation share one availability rule. A faction
// stage has no faction and reaches every maker. Loadouts.Materialize takes a chooser and ChooseProduct is the game's,
// so presets and generation share this one availability rule. A faction
// always reaches its own manufacturer's gear, and otherwise gear made by a manufacturer its allegiance names
// (operator, 2026-09-30: allegiance lists only other factions). Whether that manufacturer is present in the galaxy
// does not matter (operator, 2026-10-06: a faction need not be present for its gear to be available).
@ -252,6 +252,25 @@ public class LoadoutGenerator
Galaxy == null || Faction == null ||
ItemManager.ItemData.Get(product.Manufacturer) == Faction || Faction.Allegiance.ContainsKey(product.Manufacturer);
// How much this outfitter favors a product: its maker's preference. The one weight of generation and of ChooseProduct.
public float ProductWeight(FactionProductData product) => ManufacturerPreference(product.Manufacturer);
// The product a design named without one is built as (ruling loadout-product-optional-context-chooses): among the
// products of the design this outfitter can get, one draw from the run's seeded Random weighted by ProductWeight;
// null when none, and uniform over them when every weight is 0. Candidates are ordered by name so the draw's
// enumeration, and so its result, never depends on record keys. All of the policy is this body.
public FactionProductData ChooseProduct(CraftedItemData design)
{
var key = ItemManager.ItemData.RefOf(design).Key;
var candidates = ItemManager.ItemData.GetAll<FactionProductData>()
.Where(product => product.Design.Key.Equals(key) && IsAvailable(product))
.OrderBy(product => product.Name, StringComparer.Ordinal)
.ToArray();
if (candidates.Length == 0) return null;
var uniform = candidates.All(product => ProductWeight(product) <= 0);
return candidates.WeightedRandomElements(ref Random, product => uniform ? 1 : ProductWeight(product), 1)[0];
}
// Prioritize products from the zone faction and its allies, penalizing distance to the manufacturer's headquarters.
// A manufacturer with no home zone in this galaxy weighs as if its headquarters lay one jump beyond the farthest
// zone this zone reaches: reachable through allegiance, least preferred.