From 9503efa4f44e52df4d1218e92e0a2952891a6c21 Mon Sep 17 00:00:00 2001
From: Sainan <63328889+Sainan@users.noreply.github.com>
Date: Mon, 7 Jul 2025 05:17:49 +0200
Subject: [PATCH 1/2] chore: improve randomness of void storm missions Instead
 of alternating the mission pool every hour, we now use
 sequentallyUniqueRandomElement which should ensure that we don't duplicate
 any of the last x missions (x = 3 for Lith & Axi and x = 1 Meso & Neo).

---
 src/services/worldStateService.ts | 49 ++++++++++++++++++-------------
 1 file changed, 29 insertions(+), 20 deletions(-)

diff --git a/src/services/worldStateService.ts b/src/services/worldStateService.ts
index 3433883f..a7926ed4 100644
--- a/src/services/worldStateService.ts
+++ b/src/services/worldStateService.ts
@@ -971,25 +971,26 @@ const getCalendarSeason = (week: number): ICalendarSeason => {
 
 // Not very faithful, but to avoid the same node coming up back-to-back (which is not valid), I've split these into 2 arrays which we're alternating between.
 
-const voidStormMissionsA = {
-    VoidT1: ["CrewBattleNode519", "CrewBattleNode518", "CrewBattleNode515", "CrewBattleNode503"],
-    VoidT2: ["CrewBattleNode501", "CrewBattleNode534", "CrewBattleNode530"],
-    VoidT3: ["CrewBattleNode521", "CrewBattleNode516"],
+const voidStormMissions = {
+    VoidT1: [
+        "CrewBattleNode519",
+        "CrewBattleNode518",
+        "CrewBattleNode515",
+        "CrewBattleNode503",
+        "CrewBattleNode509",
+        "CrewBattleNode522",
+        "CrewBattleNode511",
+        "CrewBattleNode512"
+    ],
+    VoidT2: ["CrewBattleNode501", "CrewBattleNode534", "CrewBattleNode530", "CrewBattleNode535", "CrewBattleNode533"],
+    VoidT3: ["CrewBattleNode521", "CrewBattleNode516", "CrewBattleNode524", "CrewBattleNode525"],
     VoidT4: [
         "CrewBattleNode555",
         "CrewBattleNode553",
         "CrewBattleNode554",
         "CrewBattleNode539",
         "CrewBattleNode531",
-        "CrewBattleNode527"
-    ]
-};
-
-const voidStormMissionsB = {
-    VoidT1: ["CrewBattleNode509", "CrewBattleNode522", "CrewBattleNode511", "CrewBattleNode512"],
-    VoidT2: ["CrewBattleNode535", "CrewBattleNode533"],
-    VoidT3: ["CrewBattleNode524", "CrewBattleNode525"],
-    VoidT4: [
+        "CrewBattleNode527",
         "CrewBattleNode542",
         "CrewBattleNode538",
         "CrewBattleNode543",
@@ -997,18 +998,21 @@ const voidStormMissionsB = {
         "CrewBattleNode550",
         "CrewBattleNode529"
     ]
-};
+} as const;
+
+const voidStormLookbehind = {
+    VoidT1: 3,
+    VoidT2: 1,
+    VoidT3: 1,
+    VoidT4: 3
+} as const;
 
 const pushVoidStorms = (arr: IVoidStorm[], hour: number): void => {
     const activation = hour * unixTimesInMs.hour + 40 * unixTimesInMs.minute;
     const expiry = activation + 90 * unixTimesInMs.minute;
     let accum = 0;
-    const rng = new SRng(new SRng(hour).randomInt(0, 100_000));
-    const voidStormMissions = structuredClone(hour & 1 ? voidStormMissionsA : voidStormMissionsB);
+    const tierIdx = { VoidT1: hour * 2, VoidT2: hour, VoidT3: hour, VoidT4: hour * 2 };
     for (const tier of ["VoidT1", "VoidT1", "VoidT2", "VoidT3", "VoidT4", "VoidT4"] as const) {
-        const idx = rng.randomInt(0, voidStormMissions[tier].length - 1);
-        const node = voidStormMissions[tier][idx];
-        voidStormMissions[tier].splice(idx, 1);
         arr.push({
             _id: {
                 $oid:
@@ -1016,7 +1020,12 @@ const pushVoidStorms = (arr: IVoidStorm[], hour: number): void => {
                     "0321e89b" +
                     (accum++).toString().padStart(8, "0")
             },
-            Node: node,
+            Node: sequentallyUniqueRandomElement(
+                voidStormMissions[tier],
+                tierIdx[tier]++,
+                voidStormLookbehind[tier],
+                2051969264
+            )!,
             Activation: { $date: { $numberLong: activation.toString() } },
             Expiry: { $date: { $numberLong: expiry.toString() } },
             ActiveMissionTier: tier
-- 
2.47.2


From 07bdd03319a41ab454ebe565ef72090c81d3797a Mon Sep 17 00:00:00 2001
From: Sainan <63328889+Sainan@users.noreply.github.com>
Date: Mon, 7 Jul 2025 05:22:06 +0200
Subject: [PATCH 2/2] oops

---
 src/services/worldStateService.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/services/worldStateService.ts b/src/services/worldStateService.ts
index a7926ed4..db1b86d2 100644
--- a/src/services/worldStateService.ts
+++ b/src/services/worldStateService.ts
@@ -1020,7 +1020,7 @@ const pushVoidStorms = (arr: IVoidStorm[], hour: number): void => {
                     "0321e89b" +
                     (accum++).toString().padStart(8, "0")
             },
-            Node: sequentallyUniqueRandomElement(
+            Node: sequentiallyUniqueRandomElement(
                 voidStormMissions[tier],
                 tierIdx[tier]++,
                 voidStormLookbehind[tier],
-- 
2.47.2