feat: classic lich ephemera reward (#2067)

Reviewed-on: #2067
Co-authored-by: Sainan <63328889+Sainan@users.noreply.github.com>
Co-committed-by: Sainan <63328889+Sainan@users.noreply.github.com>

src/helpers/nemesisHelpers.ts

@@ -47,6 +47,42 @@ export const showdownNodes: Record<TNemesisFaction, string> = {
     FC_INFESTATION: "CrewBattleNode559"
 };
 
+const ephemeraProbabilities: Record<TNemesisFaction, number> = {
+    FC_GRINEER: 0.05,
+    FC_CORPUS: 0.2,
+    FC_INFESTATION: 0
+};
+
+type TInnateDamageTag =
+    | "InnateElectricityDamage"
+    | "InnateHeatDamage"
+    | "InnateFreezeDamage"
+    | "InnateToxinDamage"
+    | "InnateMagDamage"
+    | "InnateRadDamage"
+    | "InnateImpactDamage";
+
+const ephmeraTypes: Record<"FC_GRINEER" | "FC_CORPUS", Record<TInnateDamageTag, string>> = {
+    FC_GRINEER: {
+        InnateElectricityDamage: "/Lotus/Upgrades/Skins/Effects/Kuva/KuvaLightningEphemera",
+        InnateHeatDamage: "/Lotus/Upgrades/Skins/Effects/Kuva/KuvaFireEphemera",
+        InnateFreezeDamage: "/Lotus/Upgrades/Skins/Effects/Kuva/KuvaIceEphemera",
+        InnateToxinDamage: "/Lotus/Upgrades/Skins/Effects/Kuva/KuvaToxinEphemera",
+        InnateMagDamage: "/Lotus/Upgrades/Skins/Effects/Kuva/KuvaMagneticEphemera",
+        InnateRadDamage: "/Lotus/Upgrades/Skins/Effects/Kuva/KuvaTricksterEphemera",
+        InnateImpactDamage: "/Lotus/Upgrades/Skins/Effects/Kuva/KuvaImpactEphemera"
+    },
+    FC_CORPUS: {
+        InnateElectricityDamage: "/Lotus/Upgrades/Skins/Effects/CorpusLichEphemeraA",
+        InnateHeatDamage: "/Lotus/Upgrades/Skins/Effects/CorpusLichEphemeraB",
+        InnateFreezeDamage: "/Lotus/Upgrades/Skins/Effects/CorpusLichEphemeraC",
+        InnateToxinDamage: "/Lotus/Upgrades/Skins/Effects/CorpusLichEphemeraD",
+        InnateMagDamage: "/Lotus/Upgrades/Skins/Effects/CorpusLichEphemeraE",
+        InnateRadDamage: "/Lotus/Upgrades/Skins/Effects/CorpusLichEphemeraF",
+        InnateImpactDamage: "/Lotus/Upgrades/Skins/Effects/CorpusLichEphemeraG"
+    }
+};
+
 // Get a parazon 'passcode' based on the nemesis fingerprint so it's always the same for the same nemesis.
 export const getNemesisPasscode = (nemesis: { fp: bigint; Faction: TNemesisFaction }): number[] => {
     const rng = new SRng(nemesis.fp);
@@ -271,21 +307,25 @@ export const isNemesisCompatibleWithVersion = (
     return true;
 };
 
-export const getInnateDamageTag = (
+export const getInnateDamageTag = (KillingSuit: string): TInnateDamageTag => {
-    KillingSuit: string
-):
-    | "InnateElectricityDamage"
-    | "InnateFreezeDamage"
-    | "InnateHeatDamage"
-    | "InnateImpactDamage"
-    | "InnateMagDamage"
-    | "InnateRadDamage"
-    | "InnateToxinDamage" => {
     return ExportWarframes[KillingSuit].nemesisUpgradeTag!;
 };
 
-// TODO: For -1399275245665749231n, the value should be 75306944, but we're off by 59 with 75307003.
+export interface INemesisProfile {
-export const getInnateDamageValue = (fp: bigint): number => {
+    innateDamageTag: TInnateDamageTag;
+    innateDamageValue: number;
+    ephemera?: string;
+    petHead?: string;
+    petBody?: string;
+    petLegs?: string;
+    petTail?: string;
+}
+
+export const generateNemesisProfile = (
+    fp: bigint = generateRewardSeed(),
+    Faction: TNemesisFaction = "FC_CORPUS",
+    killingSuit: string = "/Lotus/Powersuits/Ember/Ember"
+): INemesisProfile => {
     const rng = new SRng(fp);
     rng.randomFloat(); // used for the weapon index
     const WeaponUpgradeValueAttenuationExponent = 2.25;
@@ -293,7 +333,37 @@ export const getInnateDamageValue = (fp: bigint): number => {
     if (value >= 0.941428) {
         value = 1;
     }
-    return Math.trunc(value * 0x40000000);
+    const profile: INemesisProfile = {
+        innateDamageTag: getInnateDamageTag(killingSuit),
+        innateDamageValue: Math.trunc(value * 0x40000000) // TODO: For -1399275245665749231n, the value should be 75306944, but we're off by 59 with 75307003.
+    };
+    if (rng.randomFloat() <= ephemeraProbabilities[Faction] && Faction != "FC_INFESTATION") {
+        profile.ephemera = ephmeraTypes[Faction][profile.innateDamageTag];
+    }
+    rng.randomFloat(); // something related to sentinel agent maybe
+    if (Faction == "FC_CORPUS") {
+        profile.petHead = rng.randomElement([
+            "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartHeadA",
+            "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartHeadB",
+            "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartHeadC"
+        ])!;
+        profile.petBody = rng.randomElement([
+            "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartBodyA",
+            "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartBodyB",
+            "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartBodyC"
+        ])!;
+        profile.petLegs = rng.randomElement([
+            "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartLegsA",
+            "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartLegsB",
+            "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartLegsC"
+        ])!;
+        profile.petTail = rng.randomElement([
+            "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartTailA",
+            "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartTailB",
+            "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartTailC"
+        ])!;
+    }
+    return profile;
 };
 
 export const getKillTokenRewardCount = (fp: bigint): number => {

src/services/inventoryService.ts

@@ -84,7 +84,7 @@ import { getRandomElement, getRandomInt, getRandomWeightedReward, SRng } from ".
 import { createMessage } from "./inboxService";
 import { getMaxStanding } from "@/src/helpers/syndicateStandingHelper";
 import { getWorldState } from "./worldStateService";
-import { getInnateDamageTag, getInnateDamageValue } from "../helpers/nemesisHelpers";
+import { generateNemesisProfile, INemesisProfile } from "../helpers/nemesisHelpers";
 
 export const createInventory = async (
     accountOwnerId: Types.ObjectId,
@@ -1969,8 +1969,7 @@ export const giveNemesisWeaponRecipe = (
     weaponType: string,
     nemesisName: string = "AGOR ROK",
     weaponLoc?: string,
-    KillingSuit: string = "/Lotus/Powersuits/Ember/Ember",
+    profile: INemesisProfile = generateNemesisProfile()
-    fp: bigint = generateRewardSeed()
 ): void => {
     if (!weaponLoc) {
         weaponLoc = ExportWeapons[weaponType].name;
@@ -1991,8 +1990,8 @@ export const giveNemesisWeaponRecipe = (
                 compat: weaponType,
                 buffs: [
                     {
-                        Tag: getInnateDamageTag(KillingSuit),
+                        Tag: profile.innateDamageTag,
-                        Value: getInnateDamageValue(fp)
+                        Value: profile.innateDamageValue
                     }
                 ]
             },
@@ -2001,27 +2000,15 @@ export const giveNemesisWeaponRecipe = (
     });
 };
 
-export const giveNemesisPetRecipe = (inventory: TInventoryDatabaseDocument, nemesisName: string = "AGOR ROK"): void => {
+export const giveNemesisPetRecipe = (
-    const head = getRandomElement([
+    inventory: TInventoryDatabaseDocument,
-        "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartHeadA",
+    nemesisName: string = "AGOR ROK",
-        "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartHeadB",
+    profile: INemesisProfile = generateNemesisProfile()
-        "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartHeadC"
+): void => {
-    ])!;
+    const head = profile.petHead!;
-    const body = getRandomElement([
+    const body = profile.petBody!;
-        "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartBodyA",
+    const legs = profile.petLegs!;
-        "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartBodyB",
+    const tail = profile.petTail!;
-        "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartBodyC"
-    ])!;
-    const legs = getRandomElement([
-        "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartLegsA",
-        "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartLegsB",
-        "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartLegsC"
-    ])!;
-    const tail = getRandomElement([
-        "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartTailA",
-        "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartTailB",
-        "/Lotus/Types/Friendly/Pets/ZanukaPets/ZanukaPetParts/ZanukaPetPartTailC"
-    ])!;
     const recipeType = Object.entries(ExportRecipes).find(arr => arr[1].resultType == head)![0];
     addRecipes(inventory, [
         {

src/services/missionInventoryUpdateService.ts

@@ -57,6 +57,7 @@ import kuriaMessage75 from "@/static/fixed_responses/kuriaMessages/seventyFivePe
 import kuriaMessage100 from "@/static/fixed_responses/kuriaMessages/oneHundredPercent.json";
 import conservationAnimals from "@/static/fixed_responses/conservationAnimals.json";
 import {
+    generateNemesisProfile,
     getInfNodes,
     getNemesisPasscode,
     getWeaponsForManifest,
@@ -659,6 +660,12 @@ export const addMissionInventoryUpdates = async (
                         k: value.killed
                     });
 
+                    const profile = generateNemesisProfile(
+                        inventory.Nemesis.fp,
+                        inventory.Nemesis.Faction,
+                        inventory.Nemesis.KillingSuit
+                    );
+
                     if (value.killed) {
                         if (
                             value.weaponLoc &&
@@ -667,20 +674,18 @@ export const addMissionInventoryUpdates = async (
                             const weaponType = getWeaponsForManifest(inventory.Nemesis.manifest)[
                                 inventory.Nemesis.WeaponIdx
                             ];
-                            giveNemesisWeaponRecipe(
+                            giveNemesisWeaponRecipe(inventory, weaponType, value.nemesisName, value.weaponLoc, profile);
-                                inventory,
-                                weaponType,
-                                value.nemesisName,
-                                value.weaponLoc,
-                                inventory.Nemesis.KillingSuit,
-                                inventory.Nemesis.fp
-                            );
                         }
                         if (value.petLoc) {
-                            giveNemesisPetRecipe(inventory);
+                            giveNemesisPetRecipe(inventory, value.nemesisName, profile);
                         }
                     }
 
+                    // "Players will receive a Lich's Ephemera regardless of whether they Vanquish or Convert them."
+                    if (profile.ephemera) {
+                        addSkin(inventory, profile.ephemera);
+                    }
+
                     // TOVERIFY: Is the inbox message also sent when converting a lich? If not, how are the rewards given?
                     if (inventory.Nemesis.Faction == "FC_INFESTATION") {
                         await sendCodaFinishedMessage(inventory, inventory.Nemesis.fp, value.nemesisName, value.killed);