diff --git a/api/src/lib/ancientRunicLeatherHorseBrowbandBench.ts b/api/src/lib/ancientRunicLeatherHorseBrowbandBench.ts new file mode 100644 index 00000000..57308df5 --- /dev/null +++ b/api/src/lib/ancientRunicLeatherHorseBrowbandBench.ts @@ -0,0 +1,228 @@ +import crypto from "node:crypto"; + +/** + * Ancient Runic Leather Horse Browband Bench, Mithril Frontal Crest Rig & Celestial Valkyrie Browband Sanctum Engine for OpenAO MMORPG. + * Simulates equestrian browband and frontal crest crafting benches (Elder Browband Bench, Runic Oak Browband Rig, Celestial Void Valkyrie Browband Sanctum), + * raw tanned bull frontal straps, tempered mithril forehead crests and astral diadem pads, + * novice expedition browbands and sovereign valkyrie browband recipes, + * independent steed bridle lateral slip prevention ratings and frontal cranial protection ratings, + * calibrated clamped browband stability bonuses, + * upfront leather material deduction on all craft attempts, consistent remainingProvidedLeathers return shapes across all paths, + * immutable bench cloning for safe rollbacks on both craft and maintain operations, cached static catalog maxima, + * crypto-secure default gameplay rolls strictly in [0, 1), and horse browband bench maintenance routines. + */ + +export type BrowbandBenchType = "ELDER_BROWBAND_BENCH" | "RUNIC_OAK_BROWBAND_RIG" | "CELESTIAL_VOID_VALKYRIE_BROWBAND_SANCTUM"; +export type RawLeatherBrowbandType = "TANNED_BULL_FRONTAL_STRAP" | "TEMPERED_MITHRIL_FOREHEAD_CREST" | "CELESTIAL_VOID_ASTRAL_DIADEM_PAD"; +export type BrowbandRecipeType = "NOVICE_EXPEDITION_BROWBAND" | "WARMASTER_MITHRIL_REINFORCED_BROWBAND" | "CELESTIAL_VOID_VALKYRIE_SOVEREIGN_BROWBAND"; + +export interface BrowbandBenchData { + benchType: BrowbandBenchType; + maxDurability: number; + leathercraftPower: number; + baseSuccessRatePercent: number; // 0 to 100 + browbandStabilityBonusPercent: number; +} + +export interface BrowbandRecipeData { + recipeType: BrowbandRecipeType; + requiredLeatherType: RawLeatherBrowbandType; + requiredLeatherCount: number; + baseBridleLateralSlipPreventionPercent: number; + baseFrontalCranialProtectionPercent: number; +} + +export interface ActiveBrowbandBench { + benchId: string; + leatherworkerPlayerId: string; + benchType: BrowbandBenchType; + currentDurability: number; + maxDurability: number; + isFunctional: boolean; +} + +export interface CraftedHorseBrowband { + browbandId: string; + recipeType: BrowbandRecipeType; + finalBridleLateralSlipPreventionPercent: number; + finalFrontalCranialProtectionPercent: number; + browbandStabilityPercent: number; // Scaled rating (clamped 0 to 100%, with catalog bench baselines ~16% to 100%) + consumedLeatherCount: number; + consumedLeatherType: RawLeatherBrowbandType; + remainingProvidedLeathers: RawLeatherBrowbandType[]; + craftedEpochMs: number; +} + +export const BROWBAND_BENCH_CATALOG: Record = { + ELDER_BROWBAND_BENCH: { benchType: "ELDER_BROWBAND_BENCH", maxDurability: 100, leathercraftPower: 35, baseSuccessRatePercent: 88, browbandStabilityBonusPercent: 15 }, + RUNIC_OAK_BROWBAND_RIG: { benchType: "RUNIC_OAK_BROWBAND_RIG", maxDurability: 220, leathercraftPower: 79, baseSuccessRatePercent: 95, browbandStabilityBonusPercent: 25 }, + CELESTIAL_VOID_VALKYRIE_BROWBAND_SANCTUM: { benchType: "CELESTIAL_VOID_VALKYRIE_BROWBAND_SANCTUM", maxDurability: 380, leathercraftPower: 142, baseSuccessRatePercent: 99, browbandStabilityBonusPercent: 40 }, +}; + +export const BROWBAND_RECIPE_CATALOG: Record = { + NOVICE_EXPEDITION_BROWBAND: { recipeType: "NOVICE_EXPEDITION_BROWBAND", requiredLeatherType: "TANNED_BULL_FRONTAL_STRAP", requiredLeatherCount: 2, baseBridleLateralSlipPreventionPercent: 28, baseFrontalCranialProtectionPercent: 18 }, + WARMASTER_MITHRIL_REINFORCED_BROWBAND: { recipeType: "WARMASTER_MITHRIL_REINFORCED_BROWBAND", requiredLeatherType: "TEMPERED_MITHRIL_FOREHEAD_CREST", requiredLeatherCount: 2, baseBridleLateralSlipPreventionPercent: 57, baseFrontalCranialProtectionPercent: 37 }, + CELESTIAL_VOID_VALKYRIE_SOVEREIGN_BROWBAND: { recipeType: "CELESTIAL_VOID_VALKYRIE_SOVEREIGN_BROWBAND", requiredLeatherType: "CELESTIAL_VOID_ASTRAL_DIADEM_PAD", requiredLeatherCount: 2, baseBridleLateralSlipPreventionPercent: 88, baseFrontalCranialProtectionPercent: 68 }, +}; + +export class AncientRunicLeatherHorseBrowbandBenchEngine { + public static readonly DURABILITY_COST_PER_CRAFT = 10; + + /** + * Cached static catalog maxima to prevent runtime array reallocation. + */ + private static readonly MAX_BENCH_POWER = Math.max(...Object.values(BROWBAND_BENCH_CATALOG).map(b => b.leathercraftPower)); + private static readonly MAX_BENCH_BONUS = Math.max(...Object.values(BROWBAND_BENCH_CATALOG).map(b => b.browbandStabilityBonusPercent)); + + /** + * Constructs an active horse browband bench instance. + */ + public static constructBench(leatherworkerPlayerId: string, benchType: BrowbandBenchType): ActiveBrowbandBench { + const data = BROWBAND_BENCH_CATALOG[benchType] ?? BROWBAND_BENCH_CATALOG.ELDER_BROWBAND_BENCH; + return { + benchId: `browband_bench_${crypto.randomUUID()}`, + leatherworkerPlayerId, + benchType: data.benchType, + currentDurability: data.maxDurability, + maxDurability: data.maxDurability, + isFunctional: true, + }; + } + + /** + * Safely samples a crypto-secure pseudorandom float strictly in [0, 1). + */ + public static sampleSecureUnitRoll(): number { + return crypto.randomInt(0, 1_000_000_000) / 1_000_000_000; + } + + /** + * Crafts horse browbands with upfront material deduction and immutable bench cloning. + */ + public static craftBrowband( + bench: ActiveBrowbandBench, + recipeType: BrowbandRecipeType, + providedLeathers: RawLeatherBrowbandType[], + craftRoll?: number, + stabilityRoll?: number, + currentEpochMs = Date.now() + ): { success: boolean; browband?: CraftedHorseBrowband; updatedBench?: ActiveBrowbandBench; remainingDurability: number; remainingProvidedLeathers: RawLeatherBrowbandType[]; reason?: string } { + const fallbackLeathers = Array.isArray(providedLeathers) ? [...providedLeathers] : []; + + if (!bench || !bench.isFunctional || bench.currentDurability < this.DURABILITY_COST_PER_CRAFT) { + return { + success: false, + updatedBench: bench ? { ...bench } : undefined, + remainingDurability: bench?.currentDurability ?? 0, + remainingProvidedLeathers: fallbackLeathers, + reason: `Horse browband bench is warped or lacks durability (requires ${this.DURABILITY_COST_PER_CRAFT}).`, + }; + } + + const benchData = BROWBAND_BENCH_CATALOG[bench.benchType]; + if (!benchData) { + return { success: false, updatedBench: { ...bench }, remainingDurability: bench.currentDurability, remainingProvidedLeathers: fallbackLeathers, reason: `Unknown bench model: ${String(bench.benchType)}` }; + } + + const recipe = BROWBAND_RECIPE_CATALOG[recipeType]; + if (!recipe) { + return { success: false, updatedBench: { ...bench }, remainingDurability: bench.currentDurability, remainingProvidedLeathers: fallbackLeathers, reason: `Unknown horse browband recipe: ${String(recipeType)}` }; + } + + if (!Array.isArray(providedLeathers)) { + return { success: false, updatedBench: { ...bench }, remainingDurability: bench.currentDurability, remainingProvidedLeathers: [], reason: "Invalid leathers array." }; + } + + // Count matching leather materials + const matchingCount = providedLeathers.filter(l => l === recipe.requiredLeatherType).length; + if (matchingCount < recipe.requiredLeatherCount) { + return { + success: false, + updatedBench: { ...bench }, + remainingDurability: bench.currentDurability, + remainingProvidedLeathers: fallbackLeathers, + reason: `Insufficient frontal straps/crests: requires ${recipe.requiredLeatherCount}x ${recipe.requiredLeatherType}, provided ${matchingCount}.`, + }; + } + + // Create updated bench clone + const updatedBench = { ...bench }; + + // Deduct durability on clone + updatedBench.currentDurability -= this.DURABILITY_COST_PER_CRAFT; + if (updatedBench.currentDurability < this.DURABILITY_COST_PER_CRAFT) { + updatedBench.currentDurability = Math.max(0, updatedBench.currentDurability); + updatedBench.isFunctional = false; + } + + // Deduct materials upfront on all craft attempts + const remainingProvidedLeathers: RawLeatherBrowbandType[] = []; + let deducted = 0; + for (const item of providedLeathers) { + if (deducted < recipe.requiredLeatherCount && item === recipe.requiredLeatherType) { + deducted++; + } else { + remainingProvidedLeathers.push(item); + } + } + + const safeCraftRoll = craftRoll !== undefined && Number.isFinite(craftRoll) ? Math.min(Math.max(craftRoll, 0), 1) : this.sampleSecureUnitRoll(); + const successThreshold = benchData.baseSuccessRatePercent / 100; + + if (safeCraftRoll > successThreshold) { + return { + success: false, + updatedBench, + remainingDurability: updatedBench.currentDurability, + remainingProvidedLeathers, + reason: `Forehead crest buckle slipped during forehead centering (roll ${safeCraftRoll.toFixed(4)} > threshold ${successThreshold.toFixed(4)}).`, + }; + } + + const safeStabilityRoll = stabilityRoll !== undefined && Number.isFinite(stabilityRoll) ? Math.min(Math.max(stabilityRoll, 0), 1) : this.sampleSecureUnitRoll(); + const powerRatio = this.MAX_BENCH_POWER > 0 ? benchData.leathercraftPower / this.MAX_BENCH_POWER : 0; + const stabilityBonusRatio = this.MAX_BENCH_BONUS > 0 ? benchData.browbandStabilityBonusPercent / this.MAX_BENCH_BONUS : 0; + + const stabilityBasePoints = safeStabilityRoll * 40; + const powerBonusPoints = powerRatio * 40; + const benchBonusPoints = stabilityBonusRatio * 20; + const rawStabilityScore = stabilityBasePoints + powerBonusPoints + benchBonusPoints; + const browbandStabilityPercent = Math.min(100, Math.max(0, Math.round(rawStabilityScore))); + + const qualityMultiplier = 0.8 + (browbandStabilityPercent / 100) * 0.4; + const finalBridleLateralSlipPreventionPercent = Math.min(100, Math.max(0, Math.round(recipe.baseBridleLateralSlipPreventionPercent * qualityMultiplier))); + const finalFrontalCranialProtectionPercent = Math.min(100, Math.max(0, Math.round(recipe.baseFrontalCranialProtectionPercent * qualityMultiplier))); + + const browband: CraftedHorseBrowband = { + browbandId: `browband_${crypto.randomUUID()}`, + recipeType: recipe.recipeType, + finalBridleLateralSlipPreventionPercent, + finalFrontalCranialProtectionPercent, + browbandStabilityPercent, + consumedLeatherCount: recipe.requiredLeatherCount, + consumedLeatherType: recipe.requiredLeatherType, + remainingProvidedLeathers, + craftedEpochMs: currentEpochMs, + }; + + return { + success: true, + browband, + updatedBench, + remainingDurability: updatedBench.currentDurability, + remainingProvidedLeathers, + }; + } + + /** + * Maintains and repairs a horse browband bench instance. + */ + public static maintainBench(bench: ActiveBrowbandBench, repairAmount: number): ActiveBrowbandBench { + if (!bench) return bench; + const updated = { ...bench }; + const safeAmount = Math.max(0, repairAmount); + updated.currentDurability = Math.min(updated.maxDurability, updated.currentDurability + safeAmount); + updated.isFunctional = updated.currentDurability >= this.DURABILITY_COST_PER_CRAFT; + return updated; + } +} diff --git a/api/src/tests/ancientRunicLeatherHorseBrowbandBench.test.ts b/api/src/tests/ancientRunicLeatherHorseBrowbandBench.test.ts new file mode 100644 index 00000000..f514b406 --- /dev/null +++ b/api/src/tests/ancientRunicLeatherHorseBrowbandBench.test.ts @@ -0,0 +1,149 @@ +import { describe, it, expect } from "vitest"; +import { AncientRunicLeatherHorseBrowbandBenchEngine } from "../lib/ancientRunicLeatherHorseBrowbandBench"; +import type { ActiveBrowbandBench } from "../lib/ancientRunicLeatherHorseBrowbandBench"; + +describe("AncientRunicLeatherHorseBrowbandBenchEngine Equestrian Forehead Diadem Stitching Benches", () => { + it("crafts Celestial Void Valkyrie Sovereign Browband in Browband Sanctum achieving 100% stability and returns remaining pads", () => { + const bench = AncientRunicLeatherHorseBrowbandBenchEngine.constructBench("leather_01", "CELESTIAL_VOID_VALKYRIE_BROWBAND_SANCTUM"); + expect(bench.benchType).toBe("CELESTIAL_VOID_VALKYRIE_BROWBAND_SANCTUM"); + expect(bench.currentDurability).toBe(380); + + const initialLeathers = [ + "CELESTIAL_VOID_ASTRAL_DIADEM_PAD", + "CELESTIAL_VOID_ASTRAL_DIADEM_PAD", + "CELESTIAL_VOID_ASTRAL_DIADEM_PAD" + ] as any[]; + + const craftRes = AncientRunicLeatherHorseBrowbandBenchEngine.craftBrowband( + bench, + "CELESTIAL_VOID_VALKYRIE_SOVEREIGN_BROWBAND", + initialLeathers, + 0.1, // Success roll + 1.0, // Stability roll 1.0 -> 40 + 40 + 20 = 100% + 100000 + ); + + expect(craftRes.success).toBe(true); + expect(craftRes.browband?.recipeType).toBe("CELESTIAL_VOID_VALKYRIE_SOVEREIGN_BROWBAND"); + expect(craftRes.browband?.browbandStabilityPercent).toBe(100); + expect(craftRes.browband?.finalBridleLateralSlipPreventionPercent).toBe(100); // 88 * 1.20 = 105.6 -> clamped 100% + expect(craftRes.browband?.finalFrontalCranialProtectionPercent).toBe(82); // 68 * 1.20 = 81.6 -> 82% + expect(craftRes.browband?.consumedLeatherCount).toBe(2); + expect(craftRes.browband?.consumedLeatherType).toBe("CELESTIAL_VOID_ASTRAL_DIADEM_PAD"); + expect(craftRes.browband?.remainingProvidedLeathers.length).toBe(1); + expect(craftRes.remainingDurability).toBe(370); // 380 - 10 + }); + + it("verifies mid-range stability roll and sub-100% quality scaling on Elder browband bench", () => { + const bench = AncientRunicLeatherHorseBrowbandBenchEngine.constructBench("leather_mid", "ELDER_BROWBAND_BENCH"); + const craftRes = AncientRunicLeatherHorseBrowbandBenchEngine.craftBrowband( + bench, + "NOVICE_EXPEDITION_BROWBAND", + ["TANNED_BULL_FRONTAL_STRAP", "TANNED_BULL_FRONTAL_STRAP"], + 0.1, + 0.5 + ); + + expect(craftRes.success).toBe(true); + expect(craftRes.browband?.browbandStabilityPercent).toBe(37); + expect(craftRes.browband?.finalBridleLateralSlipPreventionPercent).toBe(27); + expect(craftRes.browband?.finalFrontalCranialProtectionPercent).toBe(17); + expect(craftRes.remainingDurability).toBe(90); // 100 - 10 + }); + + it("fails when craft roll exceeds threshold, deducting materials upfront and bench durability on clone", () => { + const bench = AncientRunicLeatherHorseBrowbandBenchEngine.constructBench("leather_fail", "ELDER_BROWBAND_BENCH"); + const initialDurability = bench.currentDurability; + + const craftRes = AncientRunicLeatherHorseBrowbandBenchEngine.craftBrowband( + bench, + "NOVICE_EXPEDITION_BROWBAND", + ["TANNED_BULL_FRONTAL_STRAP", "TANNED_BULL_FRONTAL_STRAP", "TANNED_BULL_FRONTAL_STRAP"], + 0.99 // Fails (threshold is 0.88) + ); + + expect(craftRes.success).toBe(false); + expect(craftRes.reason).toContain("Forehead crest buckle slipped"); + expect(craftRes.remainingProvidedLeathers.length).toBe(1); // 3 provided - 2 deducted upfront = 1 remaining + expect(craftRes.remainingDurability).toBe(initialDurability - 10); + // Original bench remains untouched + expect(bench.currentDurability).toBe(initialDurability); + }); + + it("rejects craft when required leather materials are insufficient without deducting durability", () => { + const bench = AncientRunicLeatherHorseBrowbandBenchEngine.constructBench("leather_short", "RUNIC_OAK_BROWBAND_RIG"); + const initialDurability = bench.currentDurability; + + const craftRes = AncientRunicLeatherHorseBrowbandBenchEngine.craftBrowband( + bench, + "WARMASTER_MITHRIL_REINFORCED_BROWBAND", + ["TEMPERED_MITHRIL_FOREHEAD_CREST"] // Needs 2, only 1 provided + ); + + expect(craftRes.success).toBe(false); + expect(craftRes.reason).toContain("Insufficient frontal straps/crests"); + expect(craftRes.remainingDurability).toBe(initialDurability); + expect(craftRes.remainingProvidedLeathers.length).toBe(1); + }); + + it("rejects craft when bench durability is below cost and marks non-functional", () => { + const brokenBench: ActiveBrowbandBench = { + benchId: "broken_01", + leatherworkerPlayerId: "player_x", + benchType: "ELDER_BROWBAND_BENCH", + currentDurability: 5, // Below 10 + maxDurability: 100, + isFunctional: false, + }; + + const craftRes = AncientRunicLeatherHorseBrowbandBenchEngine.craftBrowband( + brokenBench, + "NOVICE_EXPEDITION_BROWBAND", + ["TANNED_BULL_FRONTAL_STRAP", "TANNED_BULL_FRONTAL_STRAP"] + ); + + expect(craftRes.success).toBe(false); + expect(craftRes.reason).toContain("lacks durability"); + expect(craftRes.remainingDurability).toBe(5); + expect(craftRes.remainingProvidedLeathers.length).toBe(2); // No materials deducted + }); + + it("maintains bench and restores durability and functional state", () => { + const damagedBench: ActiveBrowbandBench = { + benchId: "dmg_01", + leatherworkerPlayerId: "player_y", + benchType: "RUNIC_OAK_BROWBAND_RIG", + currentDurability: 0, + maxDurability: 220, + isFunctional: false, + }; + + const repaired = AncientRunicLeatherHorseBrowbandBenchEngine.maintainBench(damagedBench, 100); + expect(repaired.currentDurability).toBe(100); + expect(repaired.isFunctional).toBe(true); + + // Does not exceed max durability + const overRepaired = AncientRunicLeatherHorseBrowbandBenchEngine.maintainBench(repaired, 500); + expect(overRepaired.currentDurability).toBe(220); + }); + + it("defensively rejects invalid recipe, non-array leathers, or invalid bench models", () => { + const bench = AncientRunicLeatherHorseBrowbandBenchEngine.constructBench("p_def", "ELDER_BROWBAND_BENCH"); + + const invalidRecipe = AncientRunicLeatherHorseBrowbandBenchEngine.craftBrowband( + bench, + "INVALID_RECIPE" as any, + ["TANNED_BULL_FRONTAL_STRAP", "TANNED_BULL_FRONTAL_STRAP"] + ); + expect(invalidRecipe.success).toBe(false); + expect(invalidRecipe.reason).toContain("Unknown horse browband recipe"); + + const invalidLeathers = AncientRunicLeatherHorseBrowbandBenchEngine.craftBrowband( + bench, + "NOVICE_EXPEDITION_BROWBAND", + null as any + ); + expect(invalidLeathers.success).toBe(false); + expect(invalidLeathers.reason).toContain("Invalid leathers array"); + }); +});