feat(game): add the new challenge modes

config/config.json

@@ -1,8 +1,16 @@
 {
   "server": {
     "name": "CapySR",
-    "http": { "bind": "0.0.0.0", "port": 21000, "public_host": "127.0.0.1" },
-    "game": { "bind": "0.0.0.0", "port": 23301, "public_host": "127.0.0.1" }
+    "http": {
+      "bind": "0.0.0.0",
+      "port": 21000,
+      "public_host": "127.0.0.1"
+    },
+    "game": {
+      "bind": "0.0.0.0",
+      "port": 23301,
+      "public_host": "127.0.0.1"
+    }
   },
   "log": {
     "level": "debug",
@@ -35,7 +43,8 @@
     "global_buffs": true,
     "unlock_all_challenges": true,
     "main_character": 8008,
-    "march_type": 1224
+    "march_type": 1224,
+    "skip_missions": []
   },
   "paths": {
     "srtools_file": "data/freesr-data.json",

proto/seeds.txt

@@ -140,6 +140,12 @@ UpdateGroupPropertyCsReq
 UpdateGroupPropertyScRsp
 GetFirstTalkNpcCsReq
 GetFirstTalkNpcScRsp
+GetFirstTalkByPerformanceNpcCsReq
+GetFirstTalkByPerformanceNpcScRsp
+FinishFirstTalkNpcCsReq
+FinishFirstTalkNpcScRsp
+FinishFirstTalkByPerformanceNpcCsReq
+FinishFirstTalkByPerformanceNpcScRsp
 GetNpcTakenRewardCsReq
 GetNpcTakenRewardScRsp
 ActiveFarmElementCsReq
@@ -195,6 +201,47 @@ TakeChallengeRewardScRsp
 ChallengeLineupNotify
 ChallengeSettleNotify
 
+# ---- three-node challenge floors (memory of chaos and its siblings, 4.6) ----
+GetChallengeTierceDataCsReq
+GetChallengeTierceDataScRsp
+GetChallengeTierceControllerCsReq
+GetChallengeTierceControllerScRsp
+SetChallengeTierceLineupCsReq
+SetChallengeTierceLineupScRsp
+StartChallengeTierceCsReq
+StartChallengeTierceScRsp
+StartNextChallengeTierceCsReq
+StartNextChallengeTierceScRsp
+RestartChallengeTierceCsReq
+RestartChallengeTierceScRsp
+ConfirmChallengeTierceStageSettleCsReq
+ConfirmChallengeTierceStageSettleScRsp
+LeaveChallengeTierceCsReq
+LeaveChallengeTierceScRsp
+ChallengeTierceSyncNotify
+
+# ---- anomaly arbitration ----
+GetChallengePeakDataCsReq
+GetChallengePeakDataScRsp
+GetCurChallengePeakCsReq
+GetCurChallengePeakScRsp
+SetChallengePeakMobLineupAvatarCsReq
+SetChallengePeakMobLineupAvatarScRsp
+SetChallengePeakBossHardModeCsReq
+SetChallengePeakBossHardModeScRsp
+StartChallengePeakCsReq
+StartChallengePeakScRsp
+ReStartChallengePeakCsReq
+ReStartChallengePeakScRsp
+LeaveChallengePeakCsReq
+LeaveChallengePeakScRsp
+ConfirmChallengePeakSettleCsReq
+ConfirmChallengePeakSettleScRsp
+TakeChallengePeakRewardCsReq
+TakeChallengePeakRewardScRsp
+ChallengePeakGroupDataUpdateScNotify
+ChallengePeakSettleScNotify
+
 # ---- inventory ----
 GetBagCsReq
 GetBagScRsp

src/core/config.cpp

@@ -104,6 +104,7 @@ bool Config::load(const std::string& path) {
         pick(*it, "unlock_all_challenges", gameplay.unlockAllChallenges);
         pick(*it, "main_character", gameplay.mainCharacter);
         pick(*it, "march_type", gameplay.marchType);
+        pick(*it, "skip_missions", gameplay.skipMissions);
     }
     return true;
 }

src/core/config.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <algorithm>
 #include <cstdint>
 #include <string>
 #include <vector>
@@ -58,8 +59,8 @@ struct PathsConfig {
 };
 
 struct GameplayConfig {
-    // auto = a srtools build replaces overworld fights; srtools = it replaces every
-    // fight; stage = never, always use the stage the client asked for.
+    // auto = a srtools build replaces calyx fights and nothing else; srtools = it
+    // replaces every fight; stage = never, always use the stage the client asked for.
     std::string battleSource = "auto";
     bool globalBuffs = true;
     // Report every challenge floor as a full clear. A floor with no stars locks the one
@@ -67,6 +68,16 @@ struct GameplayConfig {
     bool unlockAllChallenges = true;
     uint32_t mainCharacter = 8008;
     uint32_t marchType = 1224;
+    // Missions never reported as finished. A scene group gated on one of these makes
+    // the 4.5.54 client throw inside MissionModule._CheckVerseByMainMission while it
+    // works out which groups to activate, which kills the whole map load: a hang on the
+    // loading screen when entering at login, a fade that rolls straight back otherwise.
+    // Main and sub mission ids both go here.
+    std::vector<uint32_t> skipMissions;
+
+    bool missionSkipped(uint32_t id) const {
+        return std::find(skipMissions.begin(), skipMissions.end(), id) != skipMissions.end();
+    }
 };
 
 struct Config {

src/data/excel.cpp

@@ -226,6 +226,23 @@ const T* findById(const std::vector<T>& sorted, uint32_t id) {
 
 const ChallengeInfo* Tables::challenge(uint32_t id) const { return findById(challenges_, id); }
 
+const PeakGroupInfo* Tables::peakGroup(uint32_t id) const { return findById(peakGroups_, id); }
+
+const PeakInfo* Tables::peak(uint32_t id) const {
+    auto it = peaks_.find(id);
+    return it == peaks_.end() ? nullptr : &it->second;
+}
+
+const std::vector<uint32_t>* Tables::peakRewards(uint32_t rewardGroupId) const {
+    auto it = peakRewards_.find(rewardGroupId);
+    return it == peakRewards_.end() ? nullptr : &it->second;
+}
+
+const BattleTargetInfo* Tables::battleTarget(uint32_t id) const {
+    auto it = battleTargets_.find(id);
+    return it == battleTargets_.end() ? nullptr : &it->second;
+}
+
 const ChallengeGroupInfo* Tables::challengeGroup(uint32_t groupId) const {
     return findById(challengeGroups_, groupId);
 }
@@ -235,6 +252,18 @@ const ChallengeTarget* Tables::challengeTarget(uint32_t id) const {
     return it == challengeTargets_.end() ? nullptr : &it->second;
 }
 
+const ChallengeTierceInfo* Tables::challengeTierce(uint32_t id) const {
+    auto it = challengeTierces_.find(id);
+    return it == challengeTierces_.end() ? nullptr : &it->second;
+}
+
+const ChallengeTierceInfo* Tables::challengeTierceFor(uint32_t challengeId) const {
+    for (const auto& [id, info] : challengeTierces_) {
+        if (info.preChallengeId == challengeId) return &info;
+    }
+    return nullptr;
+}
+
 uint64_t Tables::challengeRewardStars(uint32_t rewardLineGroupId) const {
     auto it = challengeRewardStars_.find(rewardLineGroupId);
     return it == challengeRewardStars_.end() ? 0 : it->second;
@@ -545,6 +574,31 @@ bool Tables::load(const std::vector<std::string>& sources) {
         challengeFloors("ChallengeStoryMazeConfig.json", ChallengeKind::Story);
         challengeFloors("ChallengeBossMazeConfig.json", ChallengeKind::Boss);
 
+        // The third node, beta-only so far. GNOOAGPBNLD is the floor-wide cycle limit;
+        // only the Memory rows carry one.
+        for (const json* row : table("ChallengeMazeTierceConfig.json")) {
+            uint32_t id = u32(*row, "ID");
+            if (id == 0 || challengeTierces_.count(id) != 0) continue;
+            ChallengeTierceInfo info;
+            info.id = id;
+            info.preChallengeId = u32(*row, "PreChallengeMazeID");
+            info.mapEntranceId = u32(*row, "MapEntranceID");
+            info.mazeGroupId = u32(*row, "MazeGroupID");
+            info.roundLimit = u32(*row, "GNOOAGPBNLD");
+            info.targetIds = u32List(*row, "ChallengeTargetID");
+            std::vector<uint32_t> configs = u32List(*row, "ConfigList");
+            std::vector<uint32_t> npcs = u32List(*row, "NpcMonsterIDList");
+            std::vector<uint32_t> events = u32List(*row, "EventIDList");
+            for (size_t i = 0; i < configs.size(); ++i) {
+                ChallengeMonster monster;
+                monster.configId = configs[i];
+                monster.npcMonsterId = i < npcs.size() ? npcs[i] : 0;
+                monster.eventId = i < events.size() ? events[i] : 0;
+                info.monsters.push_back(monster);
+            }
+            if (info.preChallengeId != 0) challengeTierces_.emplace(id, std::move(info));
+        }
+
         // Pure Fiction keeps its turn limit and its score targets one table over.
         for (const json* row : table("ChallengeStoryMazeExtra.json")) {
             uint32_t id = u32(*row, "ID");
@@ -594,6 +648,61 @@ bool Tables::load(const std::vector<std::string>& sources) {
         challengeRewards("ChallengeStoryRewardLine.json");
         challengeRewards("ChallengeBossRewardLine.json");
 
+        // Anomaly Arbitration. Only the beta dump places the fights -- production rows
+        // have no arena columns -- so a later source fills what an earlier one left
+        // empty rather than losing the row to it. The last entry of each list is the
+        // encounter itself.
+        for (const json* row : table("ChallengePeakConfig.json")) {
+            uint32_t id = u32(*row, "ID");
+            if (id == 0) continue;
+            PeakInfo& peak = peaks_[id];
+            peak.id = id;
+            if (peak.mapEntranceId == 0) peak.mapEntranceId = u32(*row, "MapEntranceID");
+            if (peak.mazeGroupId == 0) peak.mazeGroupId = u32(*row, "MazeGroupID");
+            if (peak.npcMonsterId == 0) {
+                std::vector<uint32_t> npcs = u32List(*row, "NpcMonsterIDList");
+                if (!npcs.empty()) peak.npcMonsterId = npcs.back();
+            }
+            if (peak.eventId == 0) {
+                std::vector<uint32_t> events = u32List(*row, "EventIDList");
+                if (!events.empty()) peak.eventId = events.back();
+            }
+            if (peak.targetIds.empty()) peak.targetIds = u32List(*row, "NormalTargetList");
+            if (peak.tagBuffs.empty()) peak.tagBuffs = u32List(*row, "TagList");
+        }
+        for (const json* row : table("ChallengePeakBossConfig.json")) {
+            uint32_t id = u32(*row, "ID");
+            if (id == 0) continue;
+            PeakInfo& peak = peaks_[id];
+            if (peak.boss) continue;
+            peak.id = id;
+            peak.boss = true;
+            peak.bossBuffs = u32List(*row, "BuffList");
+            peak.hardTarget = u32(*row, "HardTarget");
+            std::vector<uint32_t> events = u32List(*row, "HardEventIDList");
+            if (!events.empty()) peak.hardEventId = events.back();
+            peak.hardTagBuffs = u32List(*row, "HardTagList");
+        }
+        for (const json* row : table("ChallengePeakGroupConfig.json")) {
+            uint32_t id = u32(*row, "ID");
+            if (id == 0) continue;
+            peakGroups_.push_back({id, u32List(*row, "PreLevelIDList"), u32(*row, "BossLevelID"),
+                                   u32(*row, "RewardGroupID")});
+        }
+        for (const json* row : table("ChallengePeakReward.json")) {
+            uint32_t id = u32(*row, "ID");
+            uint32_t group = u32(*row, "RewardGroupID");
+            if (id == 0 || group == 0) continue;
+            std::vector<uint32_t>& ids = peakRewards_[group];
+            if (std::find(ids.begin(), ids.end(), id) == ids.end()) ids.push_back(id);
+        }
+        for (const json* row : table("BattleTargetConfig.json")) {
+            uint32_t id = u32(*row, "ID");
+            if (id == 0 || battleTargets_.count(id) != 0) continue;
+            bool deaths = str(*row, "AbilityName").find("DeathCount") != std::string::npos;
+            battleTargets_.emplace(id, BattleTargetInfo{id, u32(*row, "TargetParam"), deaths});
+        }
+
         for (const json* row : table("InteractConfig.json")) {
             uint32_t id = u32(*row, "InteractID");
             if (id == 0 || interacts_.count(id) != 0) continue;
@@ -634,6 +743,21 @@ bool Tables::load(const std::vector<std::string>& sources) {
     };
     sortById(challenges_);
     sortById(challengeGroups_);
+    sortById(peakGroups_);
+
+    // Each fight learns its season, and plants its one monster over the arena's marker.
+    for (const PeakGroupInfo& group : peakGroups_) {
+        for (uint32_t id : group.mobIds) {
+            if (auto it = peaks_.find(id); it != peaks_.end()) it->second.groupId = group.id;
+        }
+        if (auto it = peaks_.find(group.bossId); it != peaks_.end()) it->second.groupId = group.id;
+    }
+    for (auto& [id, peak] : peaks_) {
+        if (peak.eventId != 0) peak.monsters = {{kPeakMarkerId, peak.npcMonsterId, peak.eventId}};
+        if (peak.hardEventId != 0) {
+            peak.hardMonsters = {{kPeakMarkerId, peak.npcMonsterId, peak.hardEventId}};
+        }
+    }
 
     for (ChallengeInfo& floor : challenges_) {
         auto extra = challengeExtras_.find(floor.id);
@@ -653,8 +777,8 @@ bool Tables::load(const std::vector<std::string>& sources) {
                   "{} plane events from {} source(s) in {} ms",
                   avatars_.size(), skillPointCount_, stages_.size(), monsters_.size(),
                   entrances_.size(), planeEvents_.size(), used, util::nowMs() - started);
-    logging::info("data", "{} challenge floors in {} seasons",
-                  challenges_.size(), challengeGroups_.size());
+    logging::info("data", "{} challenge floors in {} seasons, {} of them with a third node",
+                  challenges_.size(), challengeGroups_.size(), challengeTierces_.size());
     logging::info("data", "{} main missions, {} tutorials, {} guides, {} quests",
                   mainMissions_.size(), tutorials_.size(), tutorialGuides_.size(),
                   quests_.size());

src/data/excel.h

@@ -127,6 +127,20 @@ struct ChallengeInfo {
     ChallengeStage stages[2];
 };
 
+// The third node 4.6 bolts onto a challenge floor. It brings its own arena, monster and
+// star targets; the buff, the mode and the first two nodes come from the floor it
+// extends. The client starts the whole floor through this once a row exists for it.
+struct ChallengeTierceInfo {
+    uint32_t id = 0;
+    uint32_t preChallengeId = 0;  // PreChallengeMazeID, the floor this extends
+    uint32_t mapEntranceId = 0;
+    uint32_t mazeGroupId = 0;
+    // Cycles for the whole floor, MoC only; the other two keep the floor's own limit.
+    uint32_t roundLimit = 0;
+    std::vector<uint32_t> targetIds;
+    std::vector<ChallengeMonster> monsters;
+};
+
 // How one star is earned. MoC counts cycles left and deaths; the other two only score.
 struct ChallengeTarget {
     uint32_t id = 0;
@@ -142,6 +156,47 @@ struct ChallengeGroupInfo {
     ChallengeKind kind = ChallengeKind::Memory;
 };
 
+// Every Anomaly Arbitration arena keeps its one monster at this instance id.
+constexpr uint32_t kPeakMarkerId = 200001;
+
+// One Anomaly Arbitration fight: a knight, or the season's boss. Like the other
+// challenges it is fought on an ordinary floor cut down to one maze group, where a
+// single monster starts the stage its event names.
+struct PeakInfo {
+    uint32_t id = 0;
+    uint32_t groupId = 0;
+    uint32_t mapEntranceId = 0;
+    uint32_t mazeGroupId = 0;
+    uint32_t npcMonsterId = 0;
+    uint32_t eventId = 0;
+    std::vector<uint32_t> targetIds;  // NormalTargetList
+    std::vector<uint32_t> tagBuffs;   // the enemy tags, TagList
+    std::vector<ChallengeMonster> monsters;
+    // The boss only: the buffs the player picks one of, and what hard mode swaps in.
+    bool boss = false;
+    std::vector<uint32_t> bossBuffs;
+    uint32_t hardTarget = 0;
+    uint32_t hardEventId = 0;
+    std::vector<uint32_t> hardTagBuffs;
+    std::vector<ChallengeMonster> hardMonsters;
+};
+
+// One Anomaly Arbitration season: three knights and a boss.
+struct PeakGroupInfo {
+    uint32_t id = 0;
+    std::vector<uint32_t> mobIds;
+    uint32_t bossId = 0;
+    uint32_t rewardGroupId = 0;
+};
+
+// BattleTargetConfig, as far as a result is judged by it: a ceiling on the cycles used,
+// or on the avatars lost.
+struct BattleTargetInfo {
+    uint32_t id = 0;
+    uint32_t param = 0;
+    bool countsDeaths = false;
+};
+
 // MazePlane.PlaneType strings, in the numbering SceneInfo.game_mode_type uses.
 uint32_t planeTypeFromName(const std::string& name);
 
@@ -205,6 +260,9 @@ public:
 
     // Every floor and season of the three challenge modes, in id order.
     const std::vector<ChallengeInfo>& challenges() const { return challenges_; }
+    // Keyed by the tierce's own id, and by the floor it extends.
+    const ChallengeTierceInfo* challengeTierce(uint32_t id) const;
+    const ChallengeTierceInfo* challengeTierceFor(uint32_t challengeId) const;
     const std::vector<ChallengeGroupInfo>& challengeGroups() const { return challengeGroups_; }
     const ChallengeInfo* challenge(uint32_t id) const;
     const ChallengeGroupInfo* challengeGroup(uint32_t groupId) const;
@@ -212,6 +270,14 @@ public:
     // Bit n set for every star count the reward line of that group pays out at.
     uint64_t challengeRewardStars(uint32_t rewardLineGroupId) const;
 
+    // Anomaly Arbitration seasons in id order, and the fights they are made of.
+    const std::vector<PeakGroupInfo>& peakGroups() const { return peakGroups_; }
+    const PeakGroupInfo* peakGroup(uint32_t id) const;
+    const PeakInfo* peak(uint32_t id) const;
+    // ChallengePeakReward rows paid out by one reward group.
+    const std::vector<uint32_t>* peakRewards(uint32_t rewardGroupId) const;
+    const BattleTargetInfo* battleTarget(uint32_t id) const;
+
     const std::unordered_map<uint32_t, AvatarInfo>& avatars() const { return avatars_; }
     const std::unordered_map<uint32_t, EntranceInfo>& entrances() const { return entrances_; }
 
@@ -240,6 +306,7 @@ private:
     std::vector<uint32_t> tutorialGuides_;
     std::vector<uint32_t> quests_;
     std::vector<ChallengeInfo> challenges_;
+    std::unordered_map<uint32_t, ChallengeTierceInfo> challengeTierces_;
     std::vector<ChallengeGroupInfo> challengeGroups_;
     std::unordered_map<uint32_t, ChallengeTarget> challengeTargets_;
     // ChallengeStoryMazeExtra, held only until load() folds it into the floors.
@@ -249,6 +316,10 @@ private:
     };
     std::unordered_map<uint32_t, ChallengeExtra> challengeExtras_;
     std::unordered_map<uint32_t, uint64_t> challengeRewardStars_;
+    std::vector<PeakGroupInfo> peakGroups_;
+    std::unordered_map<uint32_t, PeakInfo> peaks_;
+    std::unordered_map<uint32_t, std::vector<uint32_t>> peakRewards_;
+    std::unordered_map<uint32_t, BattleTargetInfo> battleTargets_;
     size_t skillPointCount_ = 0;
     bool loaded_ = false;
 };

src/game/battle.cpp

@@ -56,7 +56,7 @@ bool useSrToolsBattle(const BattleConfig& config, bool allowOverride) {
     const std::string& source = core::Config::get().gameplay.battleSource;
     if (source == "stage") return false;
     if (source == "srtools") return true;
-    return allowOverride;  // "auto"
+    return allowOverride;  // "auto": the calyx only
 }
 
 // Battle types that need a win condition of their own, or the client hangs on the
@@ -82,6 +82,17 @@ void addBattleTargets(proto::SceneBattleInfo& info, const std::string& battleTyp
         }
     } else if (battleType == "AS") {
         target(1, 90005);
+    } else if (battleType == "AA") {
+        // Every slot present; the fight's own targets go in the fifth, each with the
+        // ceiling it is judged against.
+        for (uint32_t key = 1; key <= 4; ++key) info.battle_target_info[key];
+        for (uint32_t id : targets) {
+            const data::BattleTargetInfo* config = data::Tables::get().battleTarget(id);
+            proto::BattleTarget entry;
+            entry.id = id;
+            entry.total_progress = config != nullptr ? config->param : 0;
+            info.battle_target_info[5].battle_target_list.push_back(entry);
+        }
     }
 }
 
@@ -165,16 +176,19 @@ proto::SceneBattleInfo create(Player& player, const BattleRequest& request) {
     if (useSrToolsBattle(config, request.allowSrToolsOverride)) {
         info.stage_id = config.stageId;
         info.rounds_limit = config.cycleCount;
-        for (const std::vector<BattleMonster>& wave : config.waves) {
-            std::vector<uint32_t> ids;
-            uint32_t level = 1;
-            for (const BattleMonster& monster : wave) {
-                for (uint32_t n = 0; n < std::max(1u, monster.amount); ++n) {
-                    ids.push_back(monster.monsterId);
+        // A calyx sweep buys several runs, one fight each, so the build's waves repeat.
+        for (uint32_t run = 0; run < std::max(1u, request.wave); ++run) {
+            for (const std::vector<BattleMonster>& wave : config.waves) {
+                std::vector<uint32_t> ids;
+                uint32_t level = 1;
+                for (const BattleMonster& monster : wave) {
+                    for (uint32_t n = 0; n < std::max(1u, monster.amount); ++n) {
+                        ids.push_back(monster.monsterId);
+                    }
+                    level = std::max(level, monster.level);
                 }
-                level = std::max(level, monster.level);
+                addWave(info, config.stageId, ids, level);
             }
-            addWave(info, config.stageId, ids, level);
         }
         for (const BattleBuff& blessing : config.blessings) {
             proto::BattleBuff buff = makeBuff(blessing.id, blessing.level, kNoOwner);
@@ -230,6 +244,9 @@ proto::SceneBattleInfo create(Player& player, const BattleRequest& request) {
     for (uint32_t buffId : {request.mazeBuffId, request.stageBuffId}) {
         if (buffId != 0) info.buff_list.push_back(makeBuff(buffId, 1, kNoOwner));
     }
+    for (uint32_t buffId : request.floorBuffIds) {
+        if (buffId != 0) info.buff_list.push_back(makeBuff(buffId, 1, kNoOwner));
+    }
     if (!request.battleType.empty()) {
         addBattleTargets(info, request.battleType, request.battleTargetIds, request.scoreSoFar);
     }

src/game/battle.h

@@ -20,8 +20,9 @@ struct BattleRequest {
     std::vector<uint32_t> stageIds;
     uint32_t cocoonId = 0;
     uint32_t wave = 0;
-    // Calyx and challenges keep their own stage even when a srtools build is loaded.
-    bool allowSrToolsOverride = true;
+    // Only a calyx hands its fight over to a srtools build; everything else keeps the
+    // stage it named. See gameplay.battle_source.
+    bool allowSrToolsOverride = false;
 
     // ---- challenges ----------------------------------------------------------
     // The team fighting this node, when it is not the squad the player walks around
@@ -30,10 +31,12 @@ struct BattleRequest {
     // The floor's own maze buff, and the one the player picked for this half.
     uint32_t mazeBuffId = 0;
     uint32_t stageBuffId = 0;
+    // Anomaly Arbitration's enemy tags and the boss buff the player picked.
+    std::vector<uint32_t> floorBuffIds;
     // MoC's cycle limit, counted down across the whole floor.
     uint32_t roundsLimit = 0;
-    // "PF" or "AS": the two scored modes need a win condition of their own or the
-    // client hangs on the last turn with nothing to settle.
+    // "PF", "AS" or "AA": modes that need a win condition of their own, or the client
+    // hangs on the last turn with nothing to settle.
     std::string battleType;
     // Score carried in from the first half, and Pure Fiction's per-wave targets.
     uint32_t scoreSoFar = 0;

src/game/battle_handlers.cpp

@@ -7,8 +7,10 @@
 #include "game/challenge.h"
 #include "game/handlers.h"
 #include "game/notify.h"
+#include "game/peak.h"
 #include "game/player.h"
 #include "game/scene.h"
+#include "game/tierce.h"
 #include "net/cmd_ids.h"
 #include "net/handler.h"
 #include "net/session.h"
@@ -30,7 +32,7 @@ bool clearsFodder(const Player& player, uint32_t skillIndex, uint32_t casterEnti
     if (skillIndex == 0 || casterEntityId == 0) return false;
     // A challenge node is not cleared by walking through it, and the caster would be
     // looked up in the overworld squad rather than the challenge team.
-    if (player.challenge().active) return false;
+    if (player.challenge().active || player.peak().active || player.tierce().active) return false;
     std::vector<uint32_t> party = player.lineups().curMembers();
     if (casterEntityId > party.size()) return false;
     uint32_t avatarId = party[casterEntityId - 1];
@@ -62,7 +64,6 @@ void applyChallenge(const Player& player, BattleRequest& request) {
     request.roundsLimit = run.roundsLeft;
     request.scoreSoFar = run.totalScore();
     request.battleTargetIds = config->battleTargetIds;
-    request.allowSrToolsOverride = false;
     switch (config->kind) {
         case data::ChallengeKind::Story:
             request.battleType = "PF";
@@ -153,6 +154,8 @@ void onSceneCastSkill(net::Session& session, const proto::SceneCastSkillCsReq& r
     request.skillIndex = req.skill_index;
     request.monsterEntityIds = monsters;
     applyChallenge(*player, request);
+    tierce::prepareBattle(*player, request);
+    peak::prepareBattle(*player, request);
     rsp.battle_info = battle::create(*player, request);
     report(monsters, proto::MonsterBattleType::MONSTER_BATTLE_TYPE_TRIGGER_BATTLE);
     session.send(cmd::SceneCastSkillScRsp, rsp);
@@ -178,14 +181,14 @@ void onSceneCastSkillCostMp(net::Session& session, const proto::SceneCastSkillCo
     session.send(cmd::SceneCastSkillCostMpScRsp, rsp);
 }
 
-// Calyx and the other farm stages: the cocoon names the stage, so a srtools build
-// must not replace it. `wave` is how many runs were bought, one stage each.
+// Calyx: the one fight a srtools build is allowed to take over, monsters, blessings and
+// all. `wave` is how many runs were bought, one stage each.
 proto::SceneBattleInfo cocoonBattle(Player& player, uint32_t cocoonId, uint32_t wave,
                                     uint32_t worldLevel) {
     BattleRequest request;
     request.cocoonId = cocoonId;
     request.wave = std::max(1u, wave);
-    request.allowSrToolsOverride = false;
+    request.allowSrToolsOverride = true;
 
     const data::CocoonInfo* cocoon = data::Tables::get().cocoon(cocoonId, worldLevel);
     if (cocoon == nullptr || cocoon->stageIds.empty()) {
@@ -230,7 +233,7 @@ void onQuickStartCocoonStage(net::Session& session,
 }
 
 // A Stagnant Shadow started from the Survival Index. PAOFHFLFFHD is the shadow's stage,
-// the key FarmElementSweep uses too; like a calyx, a srtools build must not replace it.
+// the key FarmElementSweep uses too.
 void onQuickStartFarmElement(net::Session& session,
                              const proto::QuickStartFarmElementCsReq& req) {
     Player* player = playerOf(session, "QuickStartFarmElement");
@@ -238,7 +241,6 @@ void onQuickStartFarmElement(net::Session& session,
 
     uint32_t worldLevel = req.world_level != 0 ? req.world_level : player->worldLevel();
     BattleRequest request;
-    request.allowSrToolsOverride = false;
     uint32_t stageId = data::Tables::get().farmElementStage(req.PAOFHFLFFHD, worldLevel);
     if (stageId != 0) request.stageIds.push_back(stageId);
 
@@ -318,10 +320,8 @@ void onReEnterLastElementStage(net::Session& session,
     Player* player = playerOf(session, "ReEnterLastElementStage");
     if (player == nullptr) return;
 
-    // The retry button names the stage it wants replayed, so a srtools build must not
-    // substitute its own -- same rule as a calyx.
+    // The retry button names the stage it wants replayed.
     BattleRequest request;
-    request.allowSrToolsOverride = false;
     if (req.stage_id != 0) request.stageIds.push_back(req.stage_id);
 
     proto::ReEnterLastElementStageScRsp rsp;
@@ -350,6 +350,8 @@ void onPveBattleResult(net::Session& session, const proto::PVEBattleResultCsReq&
     // The monsters are gone from the scene by now, which is how the run tells whether
     // the node it was fighting is finished.
     challenge::battleFinished(session, *player, req);
+    tierce::battleFinished(session, *player, req);
+    peak::battleFinished(session, *player, req);
 
     // The fight was simulated on the client; the server only confirms the outcome.
     proto::PVEBattleResultScRsp rsp;

src/game/challenge.cpp

@@ -81,15 +81,15 @@ proto::GetChallengeScRsp history() {
     return rsp;
 }
 
-proto::LineupInfo lineup(const Player& player, uint32_t stage) {
-    const std::vector<uint32_t>& party = player.challenge().party[half(stage)];
+proto::LineupInfo extraLineup(const Player& player, const std::vector<uint32_t>& party,
+                              proto::ExtraLineupType type) {
     Roster roster = player.roster();
 
     proto::LineupInfo info;
-    info.extra_lineup_type = lineupTypeOf(stage);
+    info.extra_lineup_type = type;
     // An extra lineup is addressed as its type plus ten, which is how the client keeps
     // it out of the six ordinary squads.
-    info.index = static_cast<uint32_t>(info.extra_lineup_type) + 10;
+    info.index = static_cast<uint32_t>(type) + 10;
     info.max_mp = maxMp(party);
     info.mp = info.max_mp;
     info.leader_slot = 0;
@@ -101,6 +101,10 @@ proto::LineupInfo lineup(const Player& player, uint32_t stage) {
     return info;
 }
 
+proto::LineupInfo lineup(const Player& player, uint32_t stage) {
+    return extraLineup(player, player.challenge().party[half(stage)], lineupTypeOf(stage));
+}
+
 proto::CurChallenge current(const Player& player) {
     const ChallengeRun& run = player.challenge();
     const data::ChallengeInfo* config = configOf(player);
@@ -124,9 +128,10 @@ proto::CurChallenge current(const Player& player) {
 const ChallengeArena* arena(const Player& player, ChallengeArena& storage) {
     const data::ChallengeInfo* config = configOf(player);
     if (config == nullptr) return nullptr;
-    const data::ChallengeStage& stage = config->stages[half(player.challenge().stage)];
-    storage.mazeGroupId = stage.mazeGroupId;
-    storage.monsters = &stage.monsters;
+    uint32_t stage = player.challenge().stage;
+    storage.mazeGroupId = config->stages[half(stage)].mazeGroupId;
+    storage.monsters = &config->stages[half(stage)].monsters;
+    storage.party = &player.challenge().party[half(stage)];
     return &storage;
 }
 
@@ -288,14 +293,7 @@ bool nextPhase(net::Session& session, Player& player, proto::SceneInfo& out) {
     return true;
 }
 
-void leave(net::Session& session, Player& player) {
-    ChallengeRun& run = player.challenge();
-    if (!run.active) return;
-
-    uint32_t entryId = run.origin.entryId;
-    Position at = run.originPos;
-    run = ChallengeRun{};
-
+void putBack(net::Session& session, Player& player, uint32_t entryId, const Position& at) {
     proto::SceneInfo scene;
     if (!scene::load(player, entryId, 0, true, scene)) {
         logging::warn("challenge", "cannot put the player back at entry {}", entryId);
@@ -315,5 +313,15 @@ void leave(net::Session& session, Player& player) {
     player.saveNow();
 }
 
+void leave(net::Session& session, Player& player) {
+    ChallengeRun& run = player.challenge();
+    if (!run.active) return;
+
+    uint32_t entryId = run.origin.entryId;
+    Position at = run.originPos;
+    run = ChallengeRun{};
+    putBack(session, player, entryId, at);
+}
+
 }  // namespace challenge
 }  // namespace game

src/game/challenge.h

@@ -49,5 +49,11 @@ bool nextPhase(net::Session& session, Player& player, proto::SceneInfo& out);
 // Ends the run and puts the player back where they started.
 void leave(net::Session& session, Player& player);
 
+// Shared with Anomaly Arbitration, which fights with the same kind of team and leaves
+// the same way.
+proto::LineupInfo extraLineup(const Player& player, const std::vector<uint32_t>& party,
+                              proto::ExtraLineupType type);
+void putBack(net::Session& session, Player& player, uint32_t entryId, const Position& at);
+
 }  // namespace challenge
 }  // namespace game

src/game/handlers.h

@@ -19,7 +19,10 @@ void registerLineupHandlers();
 void registerSceneHandlers();
 void registerBattleHandlers();
 void registerMissionHandlers();
+void registerTalkHandlers();
 void registerChallengeHandlers();
+void registerTierceHandlers();
+void registerPeakHandlers();
 void registerModuleHandlers();
 void registerMiscHandlers();
 

src/game/misc_handlers.cpp

@@ -12,6 +12,7 @@
 #include "net/handler.h"
 #include "net/session.h"
 #include "proto/gen/protos.h"
+#include "sdk/routes.h"
 
 namespace game {
 namespace {
@@ -123,16 +124,17 @@ void onGetActivityScheduleConfig(net::Session& session,
     session.send(cmd::GetActivityScheduleConfigScRsp, rsp);
 }
 
-// A "CapySR" tag on the client's version label: Lua in ClientDownloadDataScNotify that
-// rewrites the VersionText object. Only the name -- the native watermark (gateway field
-// 1660) stays off, it prints account data.
+// A "CapySR" tag on the client's version label, with the client version after it: Lua in
+// ClientDownloadDataScNotify that rewrites the VersionText object. The native watermark
+// (gateway field 1660) stays off, it prints account data.
 constexpr std::string_view kWatermarkText = "CapySR";
 constexpr uint32_t kWatermarkFrom = 0xD08C4F;  // caramel
 constexpr uint32_t kWatermarkTo = 0xF6DDA0;    // sand
 
-std::string watermarkLua() {
+// Caramel to sand across `text`, one colour tag per character.
+std::string gradient(std::string_view text) {
     std::string rich;
-    size_t n = kWatermarkText.size();
+    size_t n = text.size();
     for (size_t i = 0; i < n; ++i) {
         double t = n > 1 ? static_cast<double>(i) / static_cast<double>(n - 1) : 0.0;
         auto channel = [&](int shift) {
@@ -144,9 +146,29 @@ std::string watermarkLua() {
         std::snprintf(tag, sizeof(tag), "<color=#%02X%02X%02X>", channel(16), channel(8),
                       channel(0));
         rich += tag;
-        rich += kWatermarkText[i];
+        rich += text[i];
         rich += "</color>";
     }
+    return rich;
+}
+
+// The version comes off a query string, so only what a version is made of gets into
+// the Lua.
+std::string cleanVersion(std::string_view version) {
+    std::string clean;
+    for (char c : version) {
+        bool keep = (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') ||
+                    c == '.' || c == '_' || c == '-';
+        if (keep) clean += c;
+    }
+    return clean;
+}
+
+std::string watermarkLua(std::string_view version) {
+    // Name and version drawn alike, side by side.
+    std::string rich = gradient(kWatermarkText);
+    std::string clean = cleanVersion(version);
+    if (!clean.empty()) rich += " " + gradient("|") + " " + gradient(clean);
     return "pcall(function()\n"
            "    local go = CS.UnityEngine.GameObject.Find(\"VersionText\")\n"
            "    if go == nil then return end\n"
@@ -166,7 +188,7 @@ void sendWatermark(net::Session& session) {
     auto& download = notify.download_data.emplace();
     download.version = ++version;
     download.time = static_cast<int64_t>(util::nowMs() / 1000);
-    download.data = watermarkLua();
+    download.data = watermarkLua(sdk::lastClientVersion());
     session.send(cmd::ClientDownloadDataScNotify, notify);
 }
 
@@ -200,7 +222,10 @@ void registerAllHandlers() {
     registerSceneHandlers();
     registerBattleHandlers();
     registerMissionHandlers();
+    registerTalkHandlers();
     registerChallengeHandlers();
+    registerTierceHandlers();
+    registerPeakHandlers();
     registerModuleHandlers();
     registerMiscHandlers();
     logging::info("game", "{} packet handlers registered, {} answered empty",

src/game/mission_handlers.cpp

@@ -7,6 +7,7 @@
 //
 // This is also what unlocks the world: the client gates map regions on finished main
 // missions.
+#include "core/config.h"
 #include "core/logger.h"
 #include "data/excel.h"
 #include "game/handlers.h"
@@ -18,9 +19,20 @@
 namespace game {
 namespace {
 
-void onGetMissionStatus(net::Session& session, const proto::GetMissionStatusCsReq& req) {
-    const data::Tables& tables = data::Tables::get();
+// Everything finished, bar the handful config names -- see gameplay.skip_missions.
+std::vector<uint32_t> finishedMainMissions() {
+    const core::GameplayConfig& gameplay = core::Config::get().gameplay;
+    const std::vector<uint32_t>& all = data::Tables::get().mainMissions();
+    if (gameplay.skipMissions.empty()) return all;
+    std::vector<uint32_t> out;
+    out.reserve(all.size());
+    for (uint32_t id : all) {
+        if (!gameplay.missionSkipped(id)) out.push_back(id);
+    }
+    return out;
+}
 
+void onGetMissionStatus(net::Session& session, const proto::GetMissionStatusCsReq& req) {
     proto::GetMissionStatusScRsp rsp;
     rsp.retcode = 0;
     // Whatever it asked about is finished. There are ~15k sub-missions in the tables,
@@ -32,9 +44,9 @@ void onGetMissionStatus(net::Session& session, const proto::GetMissionStatusCsRe
         mission.progress = 1;
         rsp.sub_mission_status_list.push_back(mission);
     }
-    rsp.finished_main_mission_id_list = tables.mainMissions();
+    rsp.finished_main_mission_id_list = finishedMainMissions();
     // The client cross-checks this against the version it is running.
-    rsp.curversion_finished_main_mission_id_list = tables.mainMissions();
+    rsp.curversion_finished_main_mission_id_list = rsp.finished_main_mission_id_list;
     session.send(cmd::GetMissionStatusScRsp, rsp);
 }
 
@@ -43,7 +55,7 @@ void onGetMissionStatus(net::Session& session, const proto::GetMissionStatusCsRe
 void onGetMissionData(net::Session& session, const proto::GetMissionDataCsReq&) {
     proto::GetMissionDataScRsp rsp;
     rsp.retcode = 0;
-    rsp.finished_main_mission_id_list = data::Tables::get().mainMissions();
+    rsp.finished_main_mission_id_list = finishedMainMissions();
     session.send(cmd::GetMissionDataScRsp, rsp);
 }
 

src/game/peak.cpp

@@ -0,0 +1,359 @@
+#include "game/peak.h"
+
+#include <algorithm>
+#include <utility>
+
+#include "core/config.h"
+#include "core/logger.h"
+#include "data/excel.h"
+#include "data/scene_res.h"
+#include "game/battle.h"
+#include "game/challenge.h"
+#include "game/handlers.h"
+#include "game/player.h"
+#include "net/cmd_ids.h"
+#include "net/session.h"
+
+namespace game {
+namespace {
+
+// Season one's arena. A season newer than the scene dump fights here instead: the
+// floor is only a backdrop for one monster, and the stage comes from the fight.
+constexpr uint32_t kFallbackEntrance = 3013501;
+constexpr uint32_t kFallbackMazeGroup = 8;
+
+// The battle target slot a fight's own targets go in.
+constexpr uint32_t kTargetSlot = 5;
+
+bool cleared() { return core::Config::get().gameplay.unlockAllChallenges; }
+
+const data::PeakInfo* configOf(const Player& player) {
+    const PeakRun& run = player.peak();
+    if (!run.active) return nullptr;
+    return data::Tables::get().peak(run.peakId);
+}
+
+// Hard mode judges the boss by one target of its own.
+std::vector<uint32_t> targetsOf(const data::PeakInfo& config, bool hard) {
+    if (hard && config.hardTarget != 0) return {config.hardTarget};
+    return config.targetIds;
+}
+
+// The most cycles a clear can take and still meet a target.
+uint32_t turnBudget(const std::vector<uint32_t>& targets) {
+    uint32_t budget = 0;
+    for (uint32_t id : targets) {
+        const data::BattleTargetInfo* target = data::Tables::get().battleTarget(id);
+        if (target != nullptr && !target->countsDeaths) budget = std::max(budget, target->param);
+    }
+    return budget;
+}
+
+const std::vector<uint32_t>& teamOf(const PeakProgress& progress, uint32_t peakId) {
+    static const std::vector<uint32_t> kNone;
+    auto it = progress.teams.find(peakId);
+    return it == progress.teams.end() ? kNone : it->second;
+}
+
+// The boss buff last picked, or the first on offer so the slot is never empty.
+uint32_t bossBuffOf(const PeakProgress& progress, const data::PeakInfo& boss) {
+    auto it = progress.bossBuffs.find(boss.id);
+    if (it != progress.bossBuffs.end() && it->second != 0) return it->second;
+    return boss.bossBuffs.empty() ? 0 : boss.bossBuffs.front();
+}
+
+std::vector<proto::ChallengePeakRecordAvatar> recordAvatars(const std::vector<uint32_t>& team) {
+    std::vector<proto::ChallengePeakRecordAvatar> out;
+    for (uint32_t avatarId : team) {
+        proto::ChallengePeakRecordAvatar entry;
+        entry.avatar_id = avatarId;
+        out.push_back(entry);
+    }
+    return out;
+}
+
+proto::ChallengePeakBossClearance clearance(const PeakProgress& progress,
+                                            const data::PeakInfo& boss, bool hard) {
+    proto::ChallengePeakBossClearance out;
+    const PeakRecord* record = progress.record(boss.id, hard);
+    out.has_passed = record != nullptr || cleared();
+    // Both difficulties show the same team and buff; the client fills its slots from them.
+    out.peak_avatar_id_list = teamOf(progress, boss.id);
+    out.buff_id = bossBuffOf(progress, boss);
+    if (record != nullptr) {
+        uint32_t budget = turnBudget(targetsOf(boss, hard));
+        out.best_cycle_count = record->cycles;
+        out.best_record_buff_id = record->buffId;
+        out.max_left_turn = budget > record->cycles ? budget - record->cycles : 0;
+        out.best_record_avatar_list = recordAvatars(record->team);
+    }
+    return out;
+}
+
+bool enterArena(Player& player, proto::SceneInfo& out) {
+    const data::PeakInfo* config = configOf(player);
+    if (config == nullptr) return false;
+
+    PeakRun& run = player.peak();
+    run.entryId = config->mapEntranceId;
+    run.mazeGroupId = config->mazeGroupId;
+    if (run.entryId == 0 || data::SceneRes::get().byEntry(run.entryId) == nullptr) {
+        logging::info("peak", "fight {}: arena {} is not in the scene dump, using {}",
+                      config->id, run.entryId, kFallbackEntrance);
+        run.entryId = kFallbackEntrance;
+        run.mazeGroupId = kFallbackMazeGroup;
+    }
+
+    // Every attempt starts at the entrance, not wherever the last fight ended.
+    SceneLocation before = player.location();
+    player.location().floorId = 0;
+    ChallengeArena storage;
+    if (scene::load(player, run.entryId, 0, true, out, peak::arena(player, storage))) return true;
+    player.location() = before;
+    return false;
+}
+
+}  // namespace
+
+namespace peak {
+
+proto::ChallengePeakGroup group(const Player& player, uint32_t groupId) {
+    const data::Tables& tables = data::Tables::get();
+    const PeakProgress& progress = player.peakProgress();
+
+    proto::ChallengePeakGroup out;
+    out.peak_group_id = groupId;
+    // Read the other way round by the client: set means the boss is on normal.
+    out.disable_hard_mode = progress.hardGroups.count(groupId) == 0;
+
+    const data::PeakGroupInfo* info = tables.peakGroup(groupId);
+    if (info == nullptr) return out;
+
+    uint32_t stars = 0;
+    proto::ChallengePeakBestRecordList best;
+    for (uint32_t mobId : info->mobIds) {
+        const data::PeakInfo* mob = tables.peak(mobId);
+        if (mob == nullptr) continue;
+        const PeakRecord* record = progress.record(mobId, false);
+
+        proto::ChallengePeak entry;
+        entry.peak_id = mobId;
+        entry.has_passed = record != nullptr || cleared();
+        entry.peak_avatar_id_list = teamOf(progress, mobId);
+        if (record != nullptr) {
+            entry.finished_target_list = record->targets;
+            entry.cycles_used = record->cycles;
+        } else if (cleared()) {
+            entry.finished_target_list = mob->targetIds;
+        }
+        stars += static_cast<uint32_t>(entry.finished_target_list.size());
+
+        if (entry.has_passed) {
+            proto::ChallengePeakBestRecord clear;
+            clear.peak_id = mobId;
+            clear.cycles_used = entry.cycles_used;
+            clear.finished_target_list = entry.finished_target_list;
+            clear.peak_avatar_id_list =
+                recordAvatars(record != nullptr ? record->team : entry.peak_avatar_id_list);
+            best.peaks.push_back(std::move(clear));
+        }
+        out.peaks.push_back(std::move(entry));
+    }
+    out.count_of_peaks = static_cast<uint32_t>(out.peaks.size());
+    // A full clear is three stars a knight, whatever the records say.
+    out.obtained_stars = cleared() ? std::max(stars, out.count_of_peaks * 3) : stars;
+    if (!best.peaks.empty()) out.best_record_list = std::move(best);
+    if (cleared()) {
+        // Reported as taken: there is no inventory to pay them into.
+        if (const std::vector<uint32_t>* rewards = tables.peakRewards(info->rewardGroupId)) {
+            out.taken_star_rewards = *rewards;
+        }
+    }
+
+    const data::PeakInfo* boss = tables.peak(info->bossId);
+    if (boss == nullptr) return out;
+    const PeakRecord* easy = progress.record(boss->id, false);
+    auto& bossInfo = out.peak_boss.emplace();
+    bossInfo.hard_mode_has_passed = progress.record(boss->id, true) != nullptr || cleared();
+    bossInfo.easy_mode = clearance(progress, *boss, false);
+    bossInfo.hard_mode = clearance(progress, *boss, true);
+    if (easy != nullptr) {
+        bossInfo.finished_target_list = easy->targets;
+    } else if (cleared()) {
+        bossInfo.finished_target_list = boss->targetIds;
+        if (boss->hardTarget != 0) bossInfo.finished_target_list.push_back(boss->hardTarget);
+    }
+    return out;
+}
+
+proto::GetChallengePeakDataScRsp overview(const Player& player) {
+    proto::GetChallengePeakDataScRsp rsp;
+    rsp.retcode = 0;
+    for (const data::PeakGroupInfo& info : data::Tables::get().peakGroups()) {
+        rsp.challenge_peak_groups.push_back(group(player, info.id));
+        // The newest season is the one on show.
+        rsp.current_peak_group_id = info.id;
+    }
+    return rsp;
+}
+
+void pushGroup(net::Session& session, const Player& player, uint32_t groupId) {
+    proto::ChallengePeakGroupDataUpdateScNotify notify;
+    notify.challenge_peak_group = group(player, groupId);
+    session.send(cmd::ChallengePeakGroupDataUpdateScNotify, notify);
+}
+
+uint32_t start(Player& player, uint32_t peakId, uint32_t buffId, std::vector<uint32_t> team,
+               proto::SceneInfo& out) {
+    const data::PeakInfo* config = data::Tables::get().peak(peakId);
+    if (config == nullptr || config->monsters.empty()) {
+        return fail(proto::Retcode::RET_CHALLENGE_NOT_EXIST);
+    }
+
+    PeakProgress& progress = player.peakProgress();
+    if (team.empty()) team = teamOf(progress, peakId);
+    if (team.empty()) return fail(proto::Retcode::RET_CHALLENGE_LINEUP_EMPTY);
+    if (config->boss && buffId == 0) buffId = bossBuffOf(progress, *config);
+    progress.teams[peakId] = team;
+    if (config->boss) progress.bossBuffs[peakId] = buffId;
+
+    PeakRun run;
+    run.active = true;
+    run.peakId = peakId;
+    run.groupId = config->groupId;
+    run.hard = config->boss && progress.hardGroups.count(config->groupId) != 0;
+    run.buffId = config->boss ? buffId : 0;
+    run.party = std::move(team);
+    // A retry keeps the spot the first attempt left from.
+    const PeakRun& previous = player.peak();
+    run.origin = previous.active ? previous.origin : player.location();
+    run.originPos = previous.active ? previous.originPos : player.position();
+
+    PeakRun saved = player.peak();
+    player.peak() = std::move(run);
+    if (!enterArena(player, out)) {
+        player.peak() = std::move(saved);
+        return fail(proto::Retcode::RET_CHALLENGE_NOT_EXIST);
+    }
+
+    logging::info("peak", "fight {} of season {} started{}, stage {}", peakId, config->groupId,
+                  player.peak().hard ? " on hard" : "",
+                  player.peak().hard && config->hardEventId != 0 ? config->hardEventId
+                                                                 : config->eventId);
+    return 0;
+}
+
+proto::LineupInfo lineup(const Player& player) {
+    return challenge::extraLineup(player, player.peak().party,
+                                  proto::ExtraLineupType::ExtraLineupType_LineupChallenge);
+}
+
+const ChallengeArena* arena(const Player& player, ChallengeArena& storage) {
+    const data::PeakInfo* config = configOf(player);
+    if (config == nullptr) return nullptr;
+    const PeakRun& run = player.peak();
+    storage.mazeGroupId = run.mazeGroupId;
+    storage.monsters = run.hard && !config->hardMonsters.empty() ? &config->hardMonsters
+                                                                 : &config->monsters;
+    storage.party = &run.party;
+    return &storage;
+}
+
+void prepareBattle(const Player& player, BattleRequest& request) {
+    const data::PeakInfo* config = configOf(player);
+    if (config == nullptr) return;
+    const PeakRun& run = player.peak();
+
+    request.party = run.party;
+    // The enemy tags are not sent back by the client; they come from the fight's config.
+    request.floorBuffIds = run.hard ? config->hardTagBuffs : config->tagBuffs;
+    if (run.buffId != 0) request.floorBuffIds.push_back(run.buffId);
+    request.battleType = "AA";
+    request.battleTargetIds = targetsOf(*config, run.hard);
+}
+
+bool battleFinished(net::Session& session, Player& player,
+                    const proto::PVEBattleResultCsReq& req) {
+    const data::PeakInfo* config = configOf(player);
+    if (config == nullptr) return false;
+    const PeakRun& run = player.peak();
+
+    // Backing out of the fight is not losing it; the client stays in the arena.
+    if (req.end_status == proto::BattleEndStatus::BATTLE_END_QUIT) return true;
+
+    proto::ChallengePeakSettleScNotify notify;
+    notify.peak_id = run.peakId;
+    notify.is_win = req.end_status == proto::BattleEndStatus::BATTLE_END_WIN;
+    if (!notify.is_win) {
+        session.send(cmd::ChallengePeakSettleScNotify, notify);
+        logging::info("peak", "fight {} lost", run.peakId);
+        return true;
+    }
+
+    uint32_t cycles = req.stt ? req.stt->round_cnt : 0;
+    uint32_t deaths = 0;
+    const proto::BattleTargetList* reported = nullptr;
+    if (req.stt) {
+        for (const proto::AvatarBattleInfo& avatar : req.stt->battle_avatar_list) {
+            if (avatar.avatar_status && avatar.avatar_status->left_hp == 0) ++deaths;
+        }
+        auto it = req.stt->battle_target_info.find(kTargetSlot);
+        if (it != req.stt->battle_target_info.end()) reported = &it->second;
+    }
+
+    // The client's own count wins; without one, judge by cycles used and avatars lost.
+    std::vector<uint32_t> targets = targetsOf(*config, run.hard);
+    std::vector<uint32_t> finished;
+    for (uint32_t id : targets) {
+        const data::BattleTargetInfo* target = data::Tables::get().battleTarget(id);
+        if (target == nullptr) continue;
+        uint32_t progress = target->countsDeaths ? deaths : cycles;
+        if (reported != nullptr) {
+            for (const proto::BattleTarget& entry : reported->battle_target_list) {
+                if (entry.id == id) progress = entry.progress;
+            }
+        }
+        if (progress <= target->param) finished.push_back(id);
+    }
+
+    PeakProgress& progress = player.peakProgress();
+    notify.cycles_used = cycles;
+    notify.is_first_pass = progress.record(run.peakId, run.hard) == nullptr;
+    if (config->boss && run.hard) {
+        // A hard clear has a result screen of its own, with no targets on it.
+        notify.hard_mode_has_passed = true;
+    } else {
+        notify.finished_target_list = finished;
+        if (config->boss) {
+            uint32_t budget = turnBudget(config->targetIds);
+            notify.turn_left = budget > cycles ? budget - cycles : 0;
+        }
+    }
+    session.send(cmd::ChallengePeakSettleScNotify, notify);
+
+    // Keep the better clear: more targets, then fewer cycles.
+    uint32_t key = PeakProgress::key(run.peakId, run.hard);
+    auto it = progress.records.find(key);
+    if (it == progress.records.end() || finished.size() > it->second.targets.size() ||
+        (finished.size() == it->second.targets.size() && cycles < it->second.cycles)) {
+        progress.records[key] = PeakRecord{cycles, finished, run.party, run.buffId};
+    }
+    pushGroup(session, player, run.groupId);
+
+    logging::info("peak", "fight {} cleared{} in {} cycle(s), {} of {} target(s)", run.peakId,
+                  run.hard ? " on hard" : "", cycles, finished.size(), targets.size());
+    return true;
+}
+
+void leave(net::Session& session, Player& player) {
+    PeakRun& run = player.peak();
+    if (!run.active) return;
+
+    uint32_t entryId = run.origin.entryId;
+    Position at = run.originPos;
+    run = PeakRun{};
+    challenge::putBack(session, player, entryId, at);
+}
+
+}  // namespace peak
+}  // namespace game

src/game/peak.h

@@ -0,0 +1,52 @@
+#pragma once
+
+#include <cstdint>
+#include <vector>
+
+#include "game/scene.h"
+#include "proto/gen/protos.h"
+
+namespace net {
+class Session;
+}
+
+namespace game {
+
+class Player;
+struct BattleRequest;
+
+// Anomaly Arbitration: three knights and a boss a season, each one fight with its own
+// team. Hard mode is a per-season toggle set before the boss is started; it swaps in
+// the boss's hard stage, tags and target.
+namespace peak {
+
+// Every season, cleared when gameplay.unlock_all_challenges is set.
+proto::GetChallengePeakDataScRsp overview(const Player& player);
+// One season as the overview draws it.
+proto::ChallengePeakGroup group(const Player& player, uint32_t groupId);
+// Re-sends one season, after anything that changes what the overview shows.
+void pushGroup(net::Session& session, const Player& player, uint32_t groupId);
+
+// Starts a fight and enters its arena. Returns the retcode; on success `out` holds the
+// arena. An empty team or a zero buff reuses the last ones picked for that fight.
+uint32_t start(Player& player, uint32_t peakId, uint32_t buffId, std::vector<uint32_t> team,
+               proto::SceneInfo& out);
+
+// The run's team, as the extra lineup the arena is fought with.
+proto::LineupInfo lineup(const Player& player);
+
+// Same as challenge::arena, for a fight in progress.
+const ChallengeArena* arena(const Player& player, ChallengeArena& storage);
+
+// What a fight inside the run brings: its team, the enemy tags, the boss buff, targets.
+void prepareBattle(const Player& player, BattleRequest& request);
+
+// The fight has ended. Returns false when no run is going.
+bool battleFinished(net::Session& session, Player& player,
+                    const proto::PVEBattleResultCsReq& req);
+
+// Ends the run and puts the player back where they started.
+void leave(net::Session& session, Player& player);
+
+}  // namespace peak
+}  // namespace game

src/game/peak_handlers.cpp

@@ -0,0 +1,193 @@
+// Anomaly Arbitration.
+//
+// The overview is one GetChallengePeakData: every season, its three knights and its
+// boss, with the last team used on each. Starting a fight answers with a bare retcode --
+// the arena has to go out first, as EnterSceneByServerScNotify, or the client is left
+// on a black screen. The result is a settle notify off the battle result, and a season
+// is sent again after anything that changes it.
+#include <utility>
+#include <vector>
+
+#include "core/logger.h"
+#include "game/handlers.h"
+#include "game/peak.h"
+#include "game/player.h"
+#include "net/cmd_ids.h"
+#include "net/handler.h"
+#include "net/session.h"
+#include "proto/gen/protos.h"
+
+namespace game {
+namespace {
+
+Player* playerOf(net::Session& session, const char* what) {
+    Player* player = session.player();
+    if (player == nullptr) logging::warn("game", "{} before login", what);
+    return player;
+}
+
+std::vector<uint32_t> nonZero(const std::vector<uint32_t>& ids) {
+    std::vector<uint32_t> out;
+    for (uint32_t id : ids) {
+        if (id != 0) out.push_back(id);
+    }
+    return out;
+}
+
+// The arena, then the team fighting in it, then the season with that team in its slot.
+void pushArena(net::Session& session, Player& player, proto::SceneInfo& scene) {
+    proto::SyncLineupNotify sync;
+    sync.lineup = peak::lineup(player);
+    session.send(cmd::SyncLineupNotify, sync);
+
+    proto::EnterSceneByServerScNotify notify;
+    notify.scene = std::move(scene);
+    notify.lineup = peak::lineup(player);
+    session.send(cmd::EnterSceneByServerScNotify, notify);
+
+    peak::pushGroup(session, player, player.peak().groupId);
+}
+
+void onGetChallengePeakData(net::Session& session, const proto::GetChallengePeakDataCsReq&) {
+    Player* player = playerOf(session, "GetChallengePeakData");
+    if (player == nullptr) return;
+    session.send(cmd::GetChallengePeakDataScRsp, peak::overview(*player));
+}
+
+void onGetCurChallengePeak(net::Session& session, const proto::GetCurChallengePeakCsReq&) {
+    Player* player = playerOf(session, "GetCurChallengePeak");
+    if (player == nullptr) return;
+
+    proto::GetCurChallengePeakScRsp rsp;
+    rsp.retcode = 0;
+    const PeakRun& run = player->peak();
+    if (run.active) {
+        rsp.peak_id = run.peakId;
+        rsp.boss_buff_id = run.buffId;
+        rsp.has_passed = true;
+    }
+    session.send(cmd::GetCurChallengePeakScRsp, rsp);
+}
+
+void onSetChallengePeakMobLineupAvatar(net::Session& session,
+                                       const proto::SetChallengePeakMobLineupAvatarCsReq& req) {
+    Player* player = playerOf(session, "SetChallengePeakMobLineupAvatar");
+    if (player == nullptr) return;
+
+    PeakProgress& progress = player->peakProgress();
+    for (const proto::ChallengePeakLineup& lineup : req.lineup_list) {
+        if (lineup.peak_id != 0) progress.teams[lineup.peak_id] = nonZero(lineup.peak_avatar_id_list);
+    }
+    player->saveNow();
+    peak::pushGroup(session, *player, req.peak_group_id);
+
+    proto::SetChallengePeakMobLineupAvatarScRsp rsp;
+    rsp.retcode = 0;
+    session.send(cmd::SetChallengePeakMobLineupAvatarScRsp, rsp);
+}
+
+void onSetChallengePeakBossHardMode(net::Session& session,
+                                    const proto::SetChallengePeakBossHardModeCsReq& req) {
+    Player* player = playerOf(session, "SetChallengePeakBossHardMode");
+    if (player == nullptr) return;
+
+    // Kept per season and across restarts: the toggle is set before the boss starts.
+    std::set<uint32_t>& hard = player->peakProgress().hardGroups;
+    if (req.is_hard_mode) {
+        hard.insert(req.peak_group_id);
+    } else {
+        hard.erase(req.peak_group_id);
+    }
+    player->saveNow();
+
+    proto::SetChallengePeakBossHardModeScRsp rsp;
+    rsp.retcode = 0;
+    rsp.peak_group_id = req.peak_group_id;
+    rsp.is_hard_mode = req.is_hard_mode;
+    session.send(cmd::SetChallengePeakBossHardModeScRsp, rsp);
+}
+
+void onStartChallengePeak(net::Session& session, const proto::StartChallengePeakCsReq& req) {
+    Player* player = playerOf(session, "StartChallengePeak");
+    if (player == nullptr) return;
+
+    proto::SceneInfo scene;
+    proto::StartChallengePeakScRsp rsp;
+    rsp.retcode = peak::start(*player, req.peak_id, req.boss_buff_id,
+                              nonZero(req.peak_avatar_id_list), scene);
+    if (rsp.retcode == 0) pushArena(session, *player, scene);
+    session.send(cmd::StartChallengePeakScRsp, rsp);
+}
+
+void onReStartChallengePeak(net::Session& session, const proto::ReStartChallengePeakCsReq&) {
+    Player* player = playerOf(session, "ReStartChallengePeak");
+    if (player == nullptr) return;
+
+    // The result screen's retry: the same fight, team and buff, from the entrance.
+    proto::ReStartChallengePeakScRsp rsp;
+    const PeakRun& run = player->peak();
+    if (!run.active) {
+        rsp.retcode = fail(proto::Retcode::RET_CHALLENGE_NOT_DOING);
+    } else {
+        proto::SceneInfo scene;
+        rsp.retcode = peak::start(*player, run.peakId, run.buffId, run.party, scene);
+        if (rsp.retcode == 0) pushArena(session, *player, scene);
+    }
+    session.send(cmd::ReStartChallengePeakScRsp, rsp);
+}
+
+void onLeaveChallengePeak(net::Session& session, const proto::LeaveChallengePeakCsReq&) {
+    Player* player = playerOf(session, "LeaveChallengePeak");
+    if (player == nullptr) return;
+
+    bool wasRunning = player->peak().active;
+    uint32_t groupId = player->peak().groupId;
+    peak::leave(session, *player);
+
+    proto::LeaveChallengePeakScRsp rsp;
+    rsp.retcode = 0;
+    session.send(cmd::LeaveChallengePeakScRsp, rsp);
+
+    // Back on the overview, which refills its team slots from the season.
+    if (wasRunning) peak::pushGroup(session, *player, groupId);
+}
+
+void onConfirmChallengePeakSettle(net::Session& session,
+                                  const proto::ConfirmChallengePeakSettleCsReq& req) {
+    proto::ConfirmChallengePeakSettleScRsp rsp;
+    rsp.retcode = 0;
+    rsp.peak_id = req.peak_id;
+    session.send(cmd::ConfirmChallengePeakSettleScRsp, rsp);
+}
+
+void onTakeChallengePeakReward(net::Session& session,
+                               const proto::TakeChallengePeakRewardCsReq& req) {
+    // A cleared season already reports every reward as taken, but the request still has
+    // to complete or the screen hangs.
+    proto::TakeChallengePeakRewardScRsp rsp;
+    rsp.retcode = 0;
+    rsp.peak_group_id = req.peak_group_id;
+    session.send(cmd::TakeChallengePeakRewardScRsp, rsp);
+}
+
+}  // namespace
+
+void registerPeakHandlers() {
+    net::on<proto::GetChallengePeakDataCsReq>(cmd::GetChallengePeakDataCsReq,
+                                              onGetChallengePeakData);
+    net::on<proto::GetCurChallengePeakCsReq>(cmd::GetCurChallengePeakCsReq, onGetCurChallengePeak);
+    net::on<proto::SetChallengePeakMobLineupAvatarCsReq>(cmd::SetChallengePeakMobLineupAvatarCsReq,
+                                                         onSetChallengePeakMobLineupAvatar);
+    net::on<proto::SetChallengePeakBossHardModeCsReq>(cmd::SetChallengePeakBossHardModeCsReq,
+                                                      onSetChallengePeakBossHardMode);
+    net::on<proto::StartChallengePeakCsReq>(cmd::StartChallengePeakCsReq, onStartChallengePeak);
+    net::on<proto::ReStartChallengePeakCsReq>(cmd::ReStartChallengePeakCsReq,
+                                              onReStartChallengePeak);
+    net::on<proto::LeaveChallengePeakCsReq>(cmd::LeaveChallengePeakCsReq, onLeaveChallengePeak);
+    net::on<proto::ConfirmChallengePeakSettleCsReq>(cmd::ConfirmChallengePeakSettleCsReq,
+                                                    onConfirmChallengePeakSettle);
+    net::on<proto::TakeChallengePeakRewardCsReq>(cmd::TakeChallengePeakRewardCsReq,
+                                                 onTakeChallengePeakReward);
+}
+
+}  // namespace game

src/game/player.h

@@ -1,7 +1,9 @@
 #pragma once
 
 #include <cstdint>
+#include <map>
 #include <memory>
+#include <set>
 #include <string>
 #include <vector>
 
@@ -47,6 +49,81 @@ struct ChallengeRun {
     const std::vector<uint32_t>& curParty() const { return party[stage > 1 ? 1 : 0]; }
 };
 
+// An Anomaly Arbitration fight in progress: one team, one monster, no second node.
+struct PeakRun {
+    bool active = false;
+    uint32_t peakId = 0;
+    uint32_t groupId = 0;
+    bool hard = false;
+    uint32_t buffId = 0;  // the boss buff the player picked
+    std::vector<uint32_t> party;
+    // The arena actually entered; a season newer than the scene dump borrows another.
+    uint32_t entryId = 0;
+    uint32_t mazeGroupId = 0;
+    SceneLocation origin;
+    Position originPos;
+};
+
+// The three-node run 4.6 replaced Memory of Chaos's two with. Each node brings its own
+// team and its own buff, and the cycle pool is spent across all three.
+struct TierceRun {
+    bool active = false;
+    uint32_t tierceId = 0;
+    uint32_t stage = 0;  // 0..2
+    // Replaying one cleared node rather than walking the whole floor.
+    bool singleStage = false;
+    bool passed = false;
+    uint32_t roundsLeft = 0;
+    uint32_t deaths[3] = {0, 0, 0};
+    uint32_t cycles[3] = {0, 0, 0};
+    uint32_t scores[3] = {0, 0, 0};
+    // proto::BattleEndStatus per node, as the result list reports it.
+    uint32_t endStatus[3] = {0, 0, 0};
+    uint32_t buffs[3] = {0, 0, 0};
+    std::vector<uint32_t> party[3];
+    SceneLocation origin;
+    Position originPos;
+
+    uint32_t totalScore() const { return scores[0] + scores[1] + scores[2]; }
+    const std::vector<uint32_t>& curParty() const { return party[stage < 3 ? stage : 2]; }
+};
+
+// What the three-node history remembers between runs: the teams and buffs the player
+// last set per floor, and how far they got.
+struct TierceProgress {
+    std::vector<uint32_t> party[3];
+    uint32_t buffs[3] = {0, 0, 0};
+    uint32_t scores[3] = {0, 0, 0};
+    uint32_t cycles[3] = {0, 0, 0};
+    uint32_t deaths[3] = {0, 0, 0};
+    bool cleared[3] = {false, false, false};
+    bool passed = false;
+    std::vector<uint32_t> targets;
+};
+
+// A cleared Anomaly Arbitration fight, as the overview shows it.
+struct PeakRecord {
+    uint32_t cycles = 0;
+    std::vector<uint32_t> targets;
+    std::vector<uint32_t> team;
+    uint32_t buffId = 0;
+};
+
+// What the Anomaly Arbitration overview remembers between fights and restarts: the
+// last team and boss buff per fight, the seasons on hard, and the best clears.
+struct PeakProgress {
+    std::map<uint32_t, std::vector<uint32_t>> teams;
+    std::map<uint32_t, uint32_t> bossBuffs;
+    std::set<uint32_t> hardGroups;
+    std::map<uint32_t, PeakRecord> records;  // by key()
+
+    static uint32_t key(uint32_t peakId, bool hard) { return peakId * 2 + (hard ? 1 : 0); }
+    const PeakRecord* record(uint32_t peakId, bool hard) const {
+        auto it = records.find(key(peakId, hard));
+        return it == records.end() ? nullptr : &it->second;
+    }
+};
+
 // One logged-in account: identity, party, position and the current fight.
 class Player {
 public:
@@ -83,6 +160,14 @@ public:
     const BattleContext& battle() const { return battle_; }
     ChallengeRun& challenge() { return challenge_; }
     const ChallengeRun& challenge() const { return challenge_; }
+    PeakRun& peak() { return peak_; }
+    const PeakRun& peak() const { return peak_; }
+    TierceRun& tierce() { return tierce_; }
+    const TierceRun& tierce() const { return tierce_; }
+    std::map<uint32_t, TierceProgress>& tierceHistory() { return tierceHistory_; }
+    const std::map<uint32_t, TierceProgress>& tierceHistory() const { return tierceHistory_; }
+    PeakProgress& peakProgress() { return peakProgress_; }
+    const PeakProgress& peakProgress() const { return peakProgress_; }
 
     uint32_t mainCharacter() const { return mainCharacter_; }
     void setMainCharacter(uint32_t value) { mainCharacter_ = value; }
@@ -120,6 +205,10 @@ private:
     SceneState sceneState_;
     BattleContext battle_;
     ChallengeRun challenge_;
+    PeakRun peak_;
+    PeakProgress peakProgress_;
+    TierceRun tierce_;
+    std::map<uint32_t, TierceProgress> tierceHistory_;
 
     uint32_t mainCharacter_ = 8008;
     uint32_t marchType_ = 1224;

src/game/player_store.cpp

@@ -27,6 +27,16 @@ bool boolOr(const json& j, const char* key, bool fallback) {
     return (it != j.end() && it->is_boolean()) ? it->get<bool>() : fallback;
 }
 
+std::vector<uint32_t> u32Array(const json& j, const char* key) {
+    std::vector<uint32_t> out;
+    auto it = j.find(key);
+    if (it == j.end() || !it->is_array()) return out;
+    for (const json& entry : *it) {
+        if (entry.is_number()) out.push_back(entry.get<uint32_t>());
+    }
+    return out;
+}
+
 }  // namespace
 
 bool loadPlayerState(Player& player) {
@@ -104,6 +114,63 @@ bool loadPlayerState(Player& player) {
     }
     book.setCurIndex(u32(j, "cur_squad", book.curIndex()));
     book.setMp(u32(j, "mp", book.maxMp()));
+
+    if (auto peak = j.find("peak"); peak != j.end() && peak->is_object()) {
+        PeakProgress& progress = player.peakProgress();
+        auto ids = [](const json& entry, const char* key) {
+            std::vector<uint32_t> out;
+            auto it = entry.find(key);
+            if (it == entry.end() || !it->is_array()) return out;
+            for (const json& id : *it) {
+                if (id.is_number()) out.push_back(id.get<uint32_t>());
+            }
+            return out;
+        };
+        for (uint32_t groupId : ids(*peak, "hard")) progress.hardGroups.insert(groupId);
+        if (auto fights = peak->find("fights"); fights != peak->end() && fights->is_array()) {
+            for (const json& fight : *fights) {
+                uint32_t id = fight.is_object() ? u32(fight, "id", 0) : 0;
+                if (id == 0) continue;
+                progress.teams[id] = ids(fight, "team");
+                if (uint32_t buff = u32(fight, "buff", 0); buff != 0) progress.bossBuffs[id] = buff;
+            }
+        }
+        if (auto records = peak->find("records"); records != peak->end() && records->is_array()) {
+            for (const json& entry : *records) {
+                uint32_t id = entry.is_object() ? u32(entry, "id", 0) : 0;
+                if (id == 0) continue;
+                PeakRecord& record =
+                    progress.records[PeakProgress::key(id, boolOr(entry, "hard", false))];
+                record.cycles = u32(entry, "cycles", 0);
+                record.targets = ids(entry, "targets");
+                record.team = ids(entry, "team");
+                record.buffId = u32(entry, "buff", 0);
+            }
+        }
+    }
+
+    // The three-node floors: what the team editor last held, and how far each got.
+    if (auto tierce = j.find("tierce"); tierce != j.end() && tierce->is_array()) {
+        for (const json& entry : *tierce) {
+            uint32_t id = entry.is_object() ? u32(entry, "id", 0) : 0;
+            if (id == 0) continue;
+            TierceProgress& progress = player.tierceHistory()[id];
+            progress.passed = boolOr(entry, "passed", false);
+            progress.targets = u32Array(entry, "targets");
+            auto nodes = entry.find("nodes");
+            if (nodes == entry.end() || !nodes->is_array()) continue;
+            for (size_t stage = 0; stage < nodes->size() && stage < 3; ++stage) {
+                const json& node = (*nodes)[stage];
+                if (!node.is_object()) continue;
+                progress.party[stage] = u32Array(node, "team");
+                progress.buffs[stage] = u32(node, "buff", 0);
+                progress.scores[stage] = u32(node, "score", 0);
+                progress.cycles[stage] = u32(node, "cycles", 0);
+                progress.deaths[stage] = u32(node, "deaths", 0);
+                progress.cleared[stage] = boolOr(node, "cleared", false);
+            }
+        }
+    }
     return true;
 }
 
@@ -140,6 +207,43 @@ bool savePlayerState(const Player& player) {
           {"entry_id", player.location().entryId}}},
     };
 
+    const PeakProgress& progress = player.peakProgress();
+    json fights = json::array();
+    for (const auto& [id, team] : progress.teams) {
+        auto buff = progress.bossBuffs.find(id);
+        fights.push_back({{"id", id},
+                          {"team", team},
+                          {"buff", buff != progress.bossBuffs.end() ? buff->second : 0u}});
+    }
+    json records = json::array();
+    for (const auto& [key, record] : progress.records) {
+        records.push_back({{"id", key / 2},
+                           {"hard", key % 2 == 1},
+                           {"cycles", record.cycles},
+                           {"targets", record.targets},
+                           {"team", record.team},
+                           {"buff", record.buffId}});
+    }
+    j["peak"] = {{"hard", progress.hardGroups}, {"fights", fights}, {"records", records}};
+
+    json tierce = json::array();
+    for (const auto& [id, floor] : player.tierceHistory()) {
+        json nodes = json::array();
+        for (uint32_t stage = 0; stage < 3; ++stage) {
+            nodes.push_back({{"team", floor.party[stage]},
+                             {"buff", floor.buffs[stage]},
+                             {"score", floor.scores[stage]},
+                             {"cycles", floor.cycles[stage]},
+                             {"deaths", floor.deaths[stage]},
+                             {"cleared", floor.cleared[stage]}});
+        }
+        tierce.push_back({{"id", id},
+                          {"passed", floor.passed},
+                          {"targets", floor.targets},
+                          {"nodes", nodes}});
+    }
+    j["tierce"] = tierce;
+
     const std::string& path = core::Config::get().paths.playerFile;
     if (!util::writeFile(path, j.dump(2))) {
         logging::warn("player", "could not write {}", path);

src/game/rescue.cpp

@@ -2,8 +2,10 @@
 
 #include "core/logger.h"
 #include "game/challenge.h"
+#include "game/peak.h"
 #include "game/player.h"
 #include "game/scene.h"
+#include "game/tierce.h"
 #include "net/cmd_ids.h"
 #include "net/session.h"
 #include "proto/gen/protos.h"
@@ -37,10 +39,30 @@ std::string unstick(net::Session& session, uint32_t entryId) {
         logging::info("rescue", "uid {}: {}", player->uid(), did);
         return did;
     }
+    if (player->peak().active && entryId == 0) {
+        peak::leave(session, *player);
+        note("left the arbitration");
+        logging::info("rescue", "uid {}: {}", player->uid(), did);
+        return did;
+    }
+    if (player->tierce().active && entryId == 0) {
+        tierce::leave(session, *player);
+        note("left the challenge floor");
+        logging::info("rescue", "uid {}: {}", player->uid(), did);
+        return did;
+    }
     if (player->challenge().active) {
         player->challenge() = ChallengeRun{};
         note("abandoned the challenge");
     }
+    if (player->peak().active) {
+        player->peak() = PeakRun{};
+        note("abandoned the arbitration");
+    }
+    if (player->tierce().active) {
+        player->tierce() = TierceRun{};
+        note("abandoned the challenge floor");
+    }
 
     uint32_t target = entryId != 0 ? entryId : player->location().entryId;
     proto::SceneInfo scene;

src/game/scene.cpp

@@ -2,6 +2,7 @@
 
 #include <algorithm>
 
+#include "core/config.h"
 #include "core/logger.h"
 #include "data/excel.h"
 #include "data/scene_res.h"
@@ -105,13 +106,18 @@ proto::LineupInfo lineupInfo(const Player& player) {
 }
 
 proto::SceneEntityGroupInfo actorGroup(Player& player, const Position& at) {
+    return actorGroup(player, at, player.lineups().curMembers());
+}
+
+proto::SceneEntityGroupInfo actorGroup(Player& player, const Position& at,
+                                       const std::vector<uint32_t>& members) {
     proto::MotionInfo motion = toMotion(at);
 
     proto::SceneEntityGroupInfo group;
     group.group_id = 0;
 
     uint32_t slot = 0;
-    for (uint32_t avatarId : player.lineups().curMembers()) {
+    for (uint32_t avatarId : members) {
         SceneEntity entity;
         entity.entityId = slot + 1;
         entity.kind = EntityKind::Actor;
@@ -146,7 +152,12 @@ bool load(Player& player, uint32_t entryId, uint32_t teleportId, bool commit,
     // entrance's own anchor, then any pad on the floor.
     Position spawn = player.position();
     const data::ResTeleport* anchor = teleportId != 0 ? floor->teleport(teleportId) : nullptr;
-    if (anchor == nullptr && floor->floorId != player.location().floorId) {
+    if (teleportId != 0 && anchor == nullptr) {
+        logging::warn("scene", "entry {} has no teleport {}, landing on its entrance", entryId,
+                      teleportId);
+    }
+    // A teleport that asked to go somewhere always moves the player, even on this floor.
+    if (anchor == nullptr && (teleportId != 0 || floor->floorId != player.location().floorId)) {
         const data::EntranceInfo* entrance = data::Tables::get().entrance(entryId);
         uint32_t anchorId = entrance != nullptr ? entrance->startAnchorId : 0;
         anchor = data::SceneRes::get().anchor(entryId, anchorId);
@@ -172,7 +183,10 @@ bool load(Player& player, uint32_t entryId, uint32_t teleportId, bool commit,
     scene.game_mode_type = floor->planeType;
     scene.world_id = fixWorldId(floor->worldId);
     scene.lighten_section_list = floor->sections;
-    scene.leader_entity_id = player.lineups().leaderSlot(player.lineups().curIndex()) + 1;
+    // An arena team is led from its first slot.
+    bool arenaTeam = arena != nullptr && arena->party != nullptr;
+    scene.leader_entity_id =
+        arenaTeam ? 1 : player.lineups().leaderSlot(player.lineups().curIndex()) + 1;
     scene.scene_identifier.emplace().floor_id = floor->floorId;
     for (const auto& [name, value] : floor->savedValues) scene.floor_saved_data[name] = value;
 
@@ -274,10 +288,13 @@ bool load(Player& player, uint32_t entryId, uint32_t teleportId, bool commit,
         }
 
         for (uint32_t chest : group.chests) scene.opened_chests_list.push_back(chest);
+        const core::GameplayConfig& gameplay = core::Config::get().gameplay;
         for (uint32_t mission : group.finishedMainMissions) {
+            if (gameplay.missionSkipped(mission)) continue;
             missions.finished_main_mission_id_list.push_back(mission);
         }
         for (uint32_t mission : group.finishedSubMissions) {
+            if (gameplay.missionSkipped(mission)) continue;
             proto::Mission entry;
             entry.id = mission;
             entry.status = proto::MissionStatus::MissionStatus_MissionFinish;
@@ -292,7 +309,8 @@ bool load(Player& player, uint32_t entryId, uint32_t teleportId, bool commit,
 
     // The party is group 0; its entity ids are slot + 1, which is what
     // SceneCastSkill and leader_entity_id refer to.
-    scene.entity_group_list.push_back(actorGroup(player, spawn));
+    scene.entity_group_list.push_back(arenaTeam ? actorGroup(player, spawn, *arena->party)
+                                                : actorGroup(player, spawn));
 
     out = std::move(scene);
     return true;

src/game/scene.h

@@ -12,17 +12,18 @@ class Player;
 
 // Positions are quantised to 1/1000 of a unit, the way the client sends them.
 struct Position {
-    int32_t x = -26968;
-    int32_t y = 78953;
-    int32_t z = 14457;
-    int32_t rotY = 11858;
+    int32_t x = 42548;
+    int32_t y = 3716;
+    int32_t z = -38422;
+    int32_t rotY = 325717;
 };
 
-// The Astral Express parlour: somewhere every account can stand.
+// Jarilo-VI's Outlying Snow Plains, on the space anchor beside a calyx, so a new
+// account has a fight to hand.
 struct SceneLocation {
-    uint32_t planeId = 20411;
-    uint32_t floorId = 20411001;
-    uint32_t entryId = 2041101;
+    uint32_t planeId = 20101;
+    uint32_t floorId = 20101001;
+    uint32_t entryId = 2010101;
 };
 
 enum class EntityKind : uint8_t { Actor, Npc, Monster, Prop };
@@ -79,6 +80,8 @@ proto::MotionInfo toMotion(const Position& position);
 struct ChallengeArena {
     uint32_t mazeGroupId = 0;
     const std::vector<data::ChallengeMonster>* monsters = nullptr;
+    // The team standing in it, which is not the squad the player walks around with.
+    const std::vector<uint32_t>* party = nullptr;
 };
 
 // Assembles SceneInfo out of the scene dump plus the current party.
@@ -98,6 +101,8 @@ proto::SceneMapInfo mapInfo(const Player& player, uint32_t floorId);
 
 // The party actors as their own group, which is how a lineup edit is pushed.
 proto::SceneEntityGroupInfo actorGroup(Player& player, const Position& at);
+proto::SceneEntityGroupInfo actorGroup(Player& player, const Position& at,
+                                       const std::vector<uint32_t>& members);
 
 }  // namespace scene
 }  // namespace game

src/game/scene_handlers.cpp

@@ -3,8 +3,10 @@
 #include "data/scene_res.h"
 #include "game/challenge.h"
 #include "game/handlers.h"
+#include "game/peak.h"
 #include "game/player.h"
 #include "game/scene.h"
+#include "game/tierce.h"
 #include "net/cmd_ids.h"
 #include "net/handler.h"
 #include "net/session.h"
@@ -32,6 +34,8 @@ void onGetCurSceneInfo(net::Session& session, const proto::GetCurSceneInfoCsReq&
     // every monster the dump has in it.
     ChallengeArena storage;
     const ChallengeArena* arena = challenge::arena(*player, storage);
+    if (arena == nullptr) arena = tierce::arena(*player, storage);
+    if (arena == nullptr) arena = peak::arena(*player, storage);
     if (scene::load(*player, player->location().entryId, 0, false, info, arena)) {
         rsp.scene = std::move(info);
     } else {
@@ -49,6 +53,8 @@ void onGetCurSceneInfo(net::Session& session, const proto::GetCurSceneInfoCsReq&
 void onEnterScene(net::Session& session, const proto::EnterSceneCsReq& req) {
     Player* player = playerOf(session, "EnterScene");
     if (player == nullptr) return;
+    logging::debug("scene", "enter {} teleport {} interact {} from entry {}", req.entry_id,
+                   req.teleport_id, req.interact_id, player->location().entryId);
 
     proto::SceneInfo info;
     if (!scene::load(*player, req.entry_id, req.teleport_id, true, info)) {

src/game/talk_handlers.cpp

@@ -0,0 +1,79 @@
+// NPC talk state.
+//
+// Before it will offer a talk option the client asks whether the party has already met
+// the npcs standing around it, and each of these replies has to carry back the id it
+// was asked about -- an empty reply reads as "npc 0", so every npc stays unmet and the
+// interact prompt comes up with nothing in it. Everyone is met; nobody has taken a
+// talk reward.
+#include "game/handlers.h"
+#include "net/cmd_ids.h"
+#include "net/handler.h"
+#include "net/session.h"
+#include "proto/gen/protos.h"
+
+namespace game {
+namespace {
+
+void onGetFirstTalkNpc(net::Session& session, const proto::GetFirstTalkNpcCsReq& req) {
+    proto::GetFirstTalkNpcScRsp rsp;
+    rsp.retcode = 0;
+    for (uint32_t npcId : req.npc_id_list) {
+        proto::FirstNpcTalkInfo info;
+        info.npc_id = npcId;
+        info.is_meet = true;
+        rsp.npc_meet_status_list.push_back(info);
+    }
+    session.send(cmd::GetFirstTalkNpcScRsp, rsp);
+}
+
+// The same question for the npcs a cutscene introduces. Left unmet, as the official
+// server does -- claiming otherwise skips the first-meet performance.
+void onGetFirstTalkByPerformanceNpc(net::Session& session,
+                                    const proto::GetFirstTalkByPerformanceNpcCsReq& req) {
+    proto::GetFirstTalkByPerformanceNpcScRsp rsp;
+    rsp.retcode = 0;
+    for (uint32_t performanceId : req.performance_id_list) {
+        proto::NpcMeetByPerformanceStatus status;
+        status.performance_id = performanceId;
+        rsp.npc_meet_status_list.push_back(status);
+    }
+    session.send(cmd::GetFirstTalkByPerformanceNpcScRsp, rsp);
+}
+
+void onFinishFirstTalkNpc(net::Session& session, const proto::FinishFirstTalkNpcCsReq& req) {
+    proto::FinishFirstTalkNpcScRsp rsp;
+    rsp.retcode = 0;
+    rsp.npc_id = req.npc_id;
+    session.send(cmd::FinishFirstTalkNpcScRsp, rsp);
+}
+
+void onFinishFirstTalkByPerformanceNpc(net::Session& session,
+                                       const proto::FinishFirstTalkByPerformanceNpcCsReq& req) {
+    proto::FinishFirstTalkByPerformanceNpcScRsp rsp;
+    rsp.retcode = 0;
+    rsp.performance_id = req.performance_id;
+    // Present but empty: there is no inventory to pay a first-meet reward into.
+    rsp.reward.emplace();
+    session.send(cmd::FinishFirstTalkByPerformanceNpcScRsp, rsp);
+}
+
+void onGetNpcTakenReward(net::Session& session, const proto::GetNpcTakenRewardCsReq& req) {
+    proto::GetNpcTakenRewardScRsp rsp;
+    rsp.retcode = 0;
+    rsp.npc_id = req.npc_id;
+    session.send(cmd::GetNpcTakenRewardScRsp, rsp);
+}
+
+}  // namespace
+
+void registerTalkHandlers() {
+    net::on<proto::GetFirstTalkNpcCsReq>(cmd::GetFirstTalkNpcCsReq, onGetFirstTalkNpc);
+    net::on<proto::GetFirstTalkByPerformanceNpcCsReq>(cmd::GetFirstTalkByPerformanceNpcCsReq,
+                                                      onGetFirstTalkByPerformanceNpc);
+    net::on<proto::FinishFirstTalkNpcCsReq>(cmd::FinishFirstTalkNpcCsReq, onFinishFirstTalkNpc);
+    net::on<proto::FinishFirstTalkByPerformanceNpcCsReq>(cmd::FinishFirstTalkByPerformanceNpcCsReq,
+                                                         onFinishFirstTalkByPerformanceNpc);
+    net::on<proto::GetNpcTakenRewardCsReq>(cmd::GetNpcTakenRewardCsReq, onGetNpcTakenReward);
+}
+
+}  // namespace game

src/game/tierce.cpp

@@ -0,0 +1,506 @@
+#include "game/tierce.h"
+
+#include <algorithm>
+#include <utility>
+
+#include "core/logger.h"
+#include "data/excel.h"
+#include "data/scene_res.h"
+#include "game/battle.h"
+#include "game/challenge.h"
+#include "game/handlers.h"
+#include "game/player.h"
+#include "net/cmd_ids.h"
+#include "net/session.h"
+
+namespace game {
+namespace {
+
+constexpr uint32_t kNodes = 3;
+
+const data::ChallengeTierceInfo* configOf(const Player& player) {
+    const TierceRun& run = player.tierce();
+    if (!run.active) return nullptr;
+    return data::Tables::get().challengeTierce(run.tierceId);
+}
+
+// The floor a tierce row extends; everything but the third node comes from it.
+const data::ChallengeInfo* floorOf(const data::ChallengeTierceInfo& config) {
+    return data::Tables::get().challenge(config.preChallengeId);
+}
+
+const data::ChallengeInfo* floorOf(const Player& player) {
+    const data::ChallengeTierceInfo* config = configOf(player);
+    return config == nullptr ? nullptr : floorOf(*config);
+}
+
+proto::ExtraLineupType lineupTypeOf(uint32_t stage) {
+    switch (stage) {
+        case 0:
+            return proto::ExtraLineupType::ExtraLineupType_LineupChallenge;
+        case 1:
+            return proto::ExtraLineupType::ExtraLineupType_LineupChallenge2;
+        default:
+            return proto::ExtraLineupType::ExtraLineupType_LineupChallenge3;
+    }
+}
+
+uint32_t entranceOf(const data::ChallengeTierceInfo& config, const data::ChallengeInfo& floor,
+                    uint32_t stage) {
+    if (stage >= 2) return config.mapEntranceId;
+    if (stage == 1 && floor.mapEntranceId2 != 0) return floor.mapEntranceId2;
+    return floor.mapEntranceId;
+}
+
+// Memory of Chaos spends one pool of cycles across all three nodes; the other two keep
+// the floor's own per-node limit.
+bool poolsCycles(const data::ChallengeInfo& floor) {
+    return floor.kind == data::ChallengeKind::Memory;
+}
+
+std::string battleTypeOf(const data::ChallengeInfo& floor) {
+    switch (floor.kind) {
+        case data::ChallengeKind::Story:
+            return "PF";
+        case data::ChallengeKind::Boss:
+            return "AS";
+        case data::ChallengeKind::Memory:
+            break;
+    }
+    return {};
+}
+
+// Which of the floor's star targets the run has met, as a flat list of target ids --
+// this mode reports the targets themselves rather than a bitmask.
+std::vector<uint32_t> finishedTargets(const Player& player) {
+    const data::ChallengeTierceInfo* config = configOf(player);
+    if (config == nullptr) return {};
+    const TierceRun& run = player.tierce();
+    const data::Tables& tables = data::Tables::get();
+
+    std::vector<uint32_t> met;
+    for (uint32_t id : config->targetIds) {
+        const data::ChallengeTarget* target = tables.challengeTarget(id);
+        if (target == nullptr) continue;
+        bool ok = false;
+        switch (target->kind) {
+            case data::ChallengeTarget::Kind::RoundsLeft:
+                ok = run.roundsLeft >= target->param;
+                break;
+            case data::ChallengeTarget::Kind::DeadAvatar:
+                ok = run.deaths[0] + run.deaths[1] + run.deaths[2] == 0;
+                break;
+            case data::ChallengeTarget::Kind::TotalScore:
+                ok = run.totalScore() >= target->param;
+                break;
+        }
+        if (ok) met.push_back(id);
+    }
+    return met;
+}
+
+bool enterArena(Player& player, proto::SceneInfo& out) {
+    const data::ChallengeTierceInfo* config = configOf(player);
+    if (config == nullptr) return false;
+    const data::ChallengeInfo* floor = floorOf(*config);
+    if (floor == nullptr) return false;
+
+    uint32_t entryId = entranceOf(*config, *floor, player.tierce().stage);
+    ChallengeArena storage;
+    // Every node starts at its entrance, not wherever the last one ended.
+    SceneLocation before = player.location();
+    player.location().floorId = 0;
+    if (scene::load(player, entryId, 0, true, out, tierce::arena(player, storage))) return true;
+    player.location() = before;
+    logging::warn("tierce", "floor {} node {} names entrance {}, which is not in the dump",
+                  config->id, player.tierce().stage + 1, entryId);
+    return false;
+}
+
+proto::ChallengeTierceStageData stageData(const TierceRun& run, uint32_t stage) {
+    proto::ChallengeTierceStageData data;
+    data.stage_index = stage;
+    data.end_status = static_cast<proto::BattleEndStatus>(run.endStatus[stage]);
+    data.score_id = run.scores[stage];
+    data.INLLMKEDGLC = run.cycles[stage];
+    data.IBECKONIICF = run.deaths[stage];
+    return data;
+}
+
+// One node cleared, or the whole floor. The client redraws the node list off these.
+void syncStage(net::Session& session, const Player& player, uint32_t stage) {
+    const TierceRun& run = player.tierce();
+    proto::ChallengeTierceSyncNotify notify;
+    auto& single = notify.IANBCDJPDJF.emplace();
+    single.stage_data = stageData(run, stage);
+    single.is_passed = run.passed;
+    single.finished_target_list = finishedTargets(player);
+    notify.MMCGBGDJIPN_case = proto::ChallengeTierceSyncNotify::k_IANBCDJPDJF;
+    session.send(cmd::ChallengeTierceSyncNotify, notify);
+}
+
+void syncFloor(net::Session& session, const Player& player) {
+    const TierceRun& run = player.tierce();
+    proto::ChallengeTierceSyncNotify notify;
+    auto& all = notify.DFNNKENBOEN.emplace();
+    all.challenge_id = run.tierceId;
+    all.is_passed = run.passed;
+    all.finished_target_list = finishedTargets(player);
+    for (uint32_t stage = 0; stage < kNodes; ++stage) {
+        all.GBMBAHHDONN.push_back(stageData(run, stage));
+    }
+    auto& record = all.EGEHLOPFELK.emplace();
+    record.used_cycle_count = run.cycles[0] + run.cycles[1] + run.cycles[2];
+    record.total_score = run.totalScore();
+    notify.MMCGBGDJIPN_case = proto::ChallengeTierceSyncNotify::k_DFNNKENBOEN;
+    session.send(cmd::ChallengeTierceSyncNotify, notify);
+}
+
+void syncMedal(net::Session& session, uint32_t groupId) {
+    proto::ChallengeTierceSyncNotify notify;
+    notify.medal.emplace().group_id = groupId;
+    notify.MMCGBGDJIPN_case = proto::ChallengeTierceSyncNotify::k_medal;
+    session.send(cmd::ChallengeTierceSyncNotify, notify);
+}
+
+// Folds the run into what the floor's history shows from now on.
+void record(Player& player) {
+    const TierceRun& run = player.tierce();
+    TierceProgress& progress = player.tierceHistory()[run.tierceId];
+    for (uint32_t stage = 0; stage < kNodes; ++stage) {
+        if (!run.party[stage].empty()) progress.party[stage] = run.party[stage];
+        progress.buffs[stage] = run.buffs[stage];
+        if (run.endStatus[stage] ==
+            static_cast<uint32_t>(proto::BattleEndStatus::BATTLE_END_WIN)) {
+            progress.cleared[stage] = true;
+            progress.scores[stage] = run.scores[stage];
+            progress.cycles[stage] = run.cycles[stage];
+            progress.deaths[stage] = run.deaths[stage];
+        }
+    }
+    if (run.passed) progress.passed = true;
+    std::vector<uint32_t> met = finishedTargets(player);
+    for (uint32_t id : met) {
+        if (std::find(progress.targets.begin(), progress.targets.end(), id) ==
+            progress.targets.end()) {
+            progress.targets.push_back(id);
+        }
+    }
+}
+
+// The per-node teams a start request carries, or the ones the floor remembers when it
+// sends none.
+void adoptLineups(Player& player, uint32_t tierceId,
+                  const std::vector<proto::ChallengeTierceStageLineupInfo>& stages) {
+    TierceRun& run = player.tierce();
+    auto it = player.tierceHistory().find(tierceId);
+    const TierceProgress* progress =
+        it == player.tierceHistory().end() ? nullptr : &it->second;
+
+    for (uint32_t stage = 0; stage < kNodes; ++stage) {
+        std::vector<uint32_t> party;
+        if (stage < stages.size()) {
+            for (const proto::AvatarIdentifier& entry : stages[stage].lineup) {
+                if (entry.id != 0) party.push_back(entry.id);
+            }
+            run.buffs[stage] = stages[stage].buff_id;
+        }
+        if (party.empty() && progress != nullptr) party = progress->party[stage];
+        if (stage >= stages.size() && progress != nullptr) run.buffs[stage] = progress->buffs[stage];
+        run.party[stage] = std::move(party);
+    }
+}
+
+}  // namespace
+
+namespace tierce {
+
+proto::GetChallengeTierceDataScRsp history(const Player& player) {
+    const data::Tables& tables = data::Tables::get();
+
+    proto::GetChallengeTierceDataScRsp rsp;
+    rsp.retcode = 0;
+    for (const data::ChallengeInfo& floor : tables.challenges()) {
+        const data::ChallengeTierceInfo* config = tables.challengeTierceFor(floor.id);
+        if (config == nullptr) continue;
+
+        auto it = player.tierceHistory().find(config->id);
+        const TierceProgress* progress =
+            it == player.tierceHistory().end() ? nullptr : &it->second;
+
+        proto::ChallengeTierceData data;
+        data.challenge_id = config->id;
+        // Unlocking floors is GetChallenge's job; this only says what has been played.
+        data.is_passed = progress != nullptr && progress->passed;
+        if (progress != nullptr) data.finished_target_list = progress->targets;
+        auto& summary = data.record.emplace();
+        for (uint32_t stage = 0; stage < kNodes; ++stage) {
+            proto::ChallengeTierceStageInfo info;
+            info.stage_index = stage;
+            if (progress != nullptr) {
+                info.buff_id = progress->buffs[stage];
+                for (uint32_t avatarId : progress->party[stage]) {
+                    proto::AvatarIdentifier entry;
+                    entry.id = avatarId;
+                    info.lineup.push_back(entry);
+                }
+                summary.used_cycle_count += progress->cycles[stage];
+                summary.total_score += progress->scores[stage];
+
+                proto::ChallengeTierceStageData result;
+                result.stage_index = stage;
+                result.end_status = progress->cleared[stage]
+                                        ? proto::BattleEndStatus::BATTLE_END_WIN
+                                        : proto::BattleEndStatus::BATTLE_END_NONE;
+                result.score_id = progress->scores[stage];
+                result.INLLMKEDGLC = progress->cycles[stage];
+                result.IBECKONIICF = progress->deaths[stage];
+                data.result_list.push_back(std::move(result));
+            }
+            data.stage_info_list.push_back(std::move(info));
+        }
+        rsp.challenge_info_list.push_back(std::move(data));
+    }
+    return rsp;
+}
+
+proto::ChallengeTierceChallengeInfo current(const Player& player) {
+    const TierceRun& run = player.tierce();
+
+    proto::ChallengeTierceChallengeInfo info;
+    info.challenge_id = run.tierceId;
+    info.stage_index = run.stage;
+    info.is_single_stage = run.singleStage;
+    for (uint32_t stage = 0; stage < kNodes; ++stage) {
+        info.lineup_list.push_back(lineup(player, stage));
+    }
+    return info;
+}
+
+proto::LineupInfo lineup(const Player& player, uint32_t stage) {
+    uint32_t index = std::min(stage, kNodes - 1);
+    return challenge::extraLineup(player, player.tierce().party[index], lineupTypeOf(index));
+}
+
+void setLineups(Player& player, uint32_t tierceId,
+                const std::vector<proto::ChallengeTierceStageLineupInfo>& stages) {
+    if (data::Tables::get().challengeTierce(tierceId) == nullptr) return;
+    TierceProgress& progress = player.tierceHistory()[tierceId];
+    for (uint32_t stage = 0; stage < kNodes && stage < stages.size(); ++stage) {
+        std::vector<uint32_t> party;
+        for (const proto::AvatarIdentifier& entry : stages[stage].lineup) {
+            if (entry.id != 0) party.push_back(entry.id);
+        }
+        if (!party.empty()) progress.party[stage] = std::move(party);
+        progress.buffs[stage] = stages[stage].buff_id;
+    }
+    player.save();
+}
+
+uint32_t start(Player& player, uint32_t tierceId, bool single, uint32_t stageIndex,
+               const std::vector<proto::ChallengeTierceStageLineupInfo>& stages,
+               proto::SceneInfo& out) {
+    const data::ChallengeTierceInfo* config = data::Tables::get().challengeTierce(tierceId);
+    if (config == nullptr) return fail(proto::Retcode::RET_CHALLENGE_NOT_EXIST);
+    const data::ChallengeInfo* floor = floorOf(*config);
+    if (floor == nullptr) return fail(proto::Retcode::RET_CHALLENGE_NOT_EXIST);
+    if (stageIndex >= kNodes) return fail(proto::Retcode::RET_CHALLENGE_NOT_EXIST);
+
+    TierceRun saved = player.tierce();
+
+    TierceRun run;
+    run.active = true;
+    run.tierceId = tierceId;
+    run.singleStage = single;
+    run.stage = single ? stageIndex : 0;
+    run.roundsLeft = poolsCycles(*floor) ? config->roundLimit : floor->roundLimit;
+    // A retry keeps the spot the first attempt left from.
+    run.origin = saved.active ? saved.origin : player.location();
+    run.originPos = saved.active ? saved.originPos : player.position();
+
+    player.tierce() = std::move(run);
+    adoptLineups(player, tierceId, stages);
+    if (player.tierce().curParty().empty()) {
+        player.tierce() = std::move(saved);
+        return fail(proto::Retcode::RET_CHALLENGE_LINEUP_EMPTY);
+    }
+    if (!enterArena(player, out)) {
+        player.tierce() = std::move(saved);
+        return fail(proto::Retcode::RET_CHALLENGE_NOT_EXIST);
+    }
+
+    // Both cannot be going at once, and the older packet's run is what the client would
+    // otherwise still think it is in.
+    player.challenge() = ChallengeRun{};
+    record(player);
+    player.saveNow();
+
+    logging::info("tierce", "floor {} started at node {}{}, {} cycle(s)", tierceId,
+                  player.tierce().stage + 1, single ? " on its own" : "",
+                  player.tierce().roundsLeft);
+    return 0;
+}
+
+const ChallengeArena* arena(const Player& player, ChallengeArena& storage) {
+    const data::ChallengeTierceInfo* config = configOf(player);
+    if (config == nullptr) return nullptr;
+    const data::ChallengeInfo* floor = floorOf(*config);
+    if (floor == nullptr) return nullptr;
+
+    const TierceRun& run = player.tierce();
+    if (run.stage >= 2) {
+        storage.mazeGroupId = config->mazeGroupId;
+        storage.monsters = &config->monsters;
+    } else {
+        storage.mazeGroupId = floor->stages[run.stage].mazeGroupId;
+        storage.monsters = &floor->stages[run.stage].monsters;
+    }
+    storage.party = &run.curParty();
+    return &storage;
+}
+
+void prepareBattle(const Player& player, BattleRequest& request) {
+    const data::ChallengeTierceInfo* config = configOf(player);
+    if (config == nullptr) return;
+    const data::ChallengeInfo* floor = floorOf(*config);
+    if (floor == nullptr) return;
+    const TierceRun& run = player.tierce();
+
+    request.party = run.curParty();
+    request.mazeBuffId = floor->mazeBuffId;
+    request.stageBuffId = run.buffs[run.stage < kNodes ? run.stage : kNodes - 1];
+    request.roundsLimit = run.roundsLeft;
+    request.scoreSoFar = run.totalScore();
+    request.battleType = battleTypeOf(*floor);
+    request.battleTargetIds = floor->battleTargetIds;
+}
+
+bool nextStage(net::Session& session, Player& player, proto::SceneInfo& out) {
+    TierceRun& run = player.tierce();
+    if (!run.active || run.singleStage || run.stage + 1 >= kNodes) return false;
+
+    ++run.stage;
+    if (run.party[run.stage].empty()) {
+        --run.stage;
+        return false;
+    }
+    if (!enterArena(player, out)) {
+        --run.stage;
+        return false;
+    }
+
+    proto::ChallengeLineupNotify swap;
+    swap.extra_lineup_type = lineupTypeOf(run.stage);
+    session.send(cmd::ChallengeLineupNotify, swap);
+
+    proto::SyncLineupNotify sync;
+    sync.lineup = lineup(player, run.stage);
+    session.send(cmd::SyncLineupNotify, sync);
+    player.saveNow();
+    return true;
+}
+
+bool restart(net::Session& session, Player& player, proto::SceneInfo& out) {
+    TierceRun& run = player.tierce();
+    if (!run.active) return false;
+
+    // The node is fought again from scratch; what it already banked is dropped.
+    run.endStatus[run.stage] = 0;
+    run.scores[run.stage] = 0;
+    const data::ChallengeTierceInfo* config = configOf(player);
+    const data::ChallengeInfo* floor = config == nullptr ? nullptr : floorOf(*config);
+    if (floor != nullptr && poolsCycles(*floor)) {
+        run.roundsLeft += run.cycles[run.stage];
+    }
+    run.cycles[run.stage] = 0;
+    run.deaths[run.stage] = 0;
+
+    if (!enterArena(player, out)) return false;
+
+    proto::SyncLineupNotify sync;
+    sync.lineup = lineup(player, run.stage);
+    session.send(cmd::SyncLineupNotify, sync);
+    player.saveNow();
+    return true;
+}
+
+bool battleFinished(net::Session& session, Player& player,
+                    const proto::PVEBattleResultCsReq& req) {
+    const data::ChallengeTierceInfo* config = configOf(player);
+    if (config == nullptr) return false;
+    const data::ChallengeInfo* floor = floorOf(*config);
+    if (floor == nullptr) return false;
+
+    TierceRun& run = player.tierce();
+    uint32_t stage = std::min(run.stage, kNodes - 1);
+
+    // Backing out of a node is not losing the floor; the client stays put.
+    if (req.end_status == proto::BattleEndStatus::BATTLE_END_QUIT) return true;
+
+    if (req.stt) {
+        // Pure Fiction and Apocalyptic Shadow report a running total, so this node's
+        // share is whatever is above what the earlier ones banked.
+        uint32_t total = req.stt->challenge_score;
+        uint32_t before = run.totalScore() - run.scores[stage];
+        run.scores[stage] = total > before ? total - before : 0;
+
+        for (const proto::AvatarBattleInfo& avatar : req.stt->battle_avatar_list) {
+            if (avatar.avatar_status && avatar.avatar_status->left_hp == 0) ++run.deaths[stage];
+        }
+        run.cycles[stage] = std::max(run.cycles[stage], req.stt->round_cnt);
+        if (poolsCycles(*floor)) {
+            uint32_t used = run.cycles[0] + run.cycles[1] + run.cycles[2];
+            uint32_t limit = config->roundLimit;
+            run.roundsLeft = limit > used ? limit - used : 0;
+        }
+    }
+
+    bool win = req.end_status == proto::BattleEndStatus::BATTLE_END_WIN;
+    if (!win) {
+        run.endStatus[stage] = static_cast<uint32_t>(proto::BattleEndStatus::BATTLE_END_LOSE);
+        syncFloor(session, player);
+        record(player);
+        player.saveNow();
+        logging::info("tierce", "floor {} failed at node {}", run.tierceId, stage + 1);
+        return true;
+    }
+
+    // Monsters still standing means this node is not over.
+    for (const SceneEntity& entity : player.sceneState().entities()) {
+        if (entity.kind == EntityKind::Monster) return true;
+    }
+
+    run.endStatus[stage] = static_cast<uint32_t>(proto::BattleEndStatus::BATTLE_END_WIN);
+    // Replaying one node ends there; walking the floor ends after the third, and only
+    // the third clears the floor either way.
+    bool last = run.singleStage || stage + 1 >= kNodes;
+    if (stage + 1 >= kNodes) run.passed = true;
+    record(player);
+    player.saveNow();
+
+    logging::info("tierce", "floor {} node {} cleared in {} cycle(s), score {}", run.tierceId,
+                  stage + 1, run.cycles[stage], run.scores[stage]);
+
+    if (last) {
+        syncFloor(session, player);
+        if (run.passed) syncMedal(session, floor->groupId);
+    } else {
+        // The client asks for the next node itself once it has read this.
+        syncStage(session, player, stage);
+    }
+    return true;
+}
+
+void leave(net::Session& session, Player& player) {
+    TierceRun& run = player.tierce();
+    if (!run.active) return;
+
+    record(player);
+    uint32_t entryId = run.origin.entryId;
+    Position at = run.originPos;
+    run = TierceRun{};
+    challenge::putBack(session, player, entryId, at);
+}
+
+}  // namespace tierce
+}  // namespace game

src/game/tierce.h

@@ -0,0 +1,66 @@
+#pragma once
+
+#include <cstdint>
+#include <vector>
+
+#include "game/scene.h"
+#include "proto/gen/protos.h"
+
+namespace net {
+class Session;
+}
+
+namespace game {
+
+class Player;
+struct BattleRequest;
+
+// The three-node floor 4.6 replaced the two-node one with. A ChallengeMazeTierce row
+// bolts a third node onto a Memory of Chaos, Pure Fiction or Apocalyptic Shadow floor,
+// and from then on the client starts that whole floor through here rather than through
+// StartChallenge -- so a floor with a tierce row never sees the older packet at all.
+//
+// The first two nodes are the ones the floor already had; the third brings its own
+// arena and monster. Each node fights with its own team and its own picked buff.
+namespace tierce {
+
+// Every floor that has a third node, with whatever the player has done on it.
+proto::GetChallengeTierceDataScRsp history(const Player& player);
+// The run in progress, as the client models it. Meaningless when none is.
+proto::ChallengeTierceChallengeInfo current(const Player& player);
+// The team fighting node `stage` (0..2), as an extra lineup rather than a squad.
+proto::LineupInfo lineup(const Player& player, uint32_t stage);
+
+// Remembers what the team editor set without starting anything, so the per-node UI
+// keeps showing it.
+void setLineups(Player& player, uint32_t tierceId,
+                const std::vector<proto::ChallengeTierceStageLineupInfo>& stages);
+
+// Starts a floor, entering the arena for its first node -- or for `stageIndex` alone
+// when the player is replaying one. Returns the retcode; on success `out` holds the
+// arena.
+uint32_t start(Player& player, uint32_t tierceId, bool single, uint32_t stageIndex,
+               const std::vector<proto::ChallengeTierceStageLineupInfo>& stages,
+               proto::SceneInfo& out);
+
+// Walks on to the next node; false when the run is on its last.
+bool nextStage(net::Session& session, Player& player, proto::SceneInfo& out);
+// Re-enters the node in progress, with its counters rolled back.
+bool restart(net::Session& session, Player& player, proto::SceneInfo& out);
+
+// Same as challenge::arena, for the node in progress.
+const ChallengeArena* arena(const Player& player, ChallengeArena& storage);
+
+// What the node brings to a fight: its team, the floor's maze buff, the buff the player
+// picked for it, the cycles left and the mode's win condition.
+void prepareBattle(const Player& player, BattleRequest& request);
+
+// A fight inside a run has ended. False when no run is going.
+bool battleFinished(net::Session& session, Player& player,
+                    const proto::PVEBattleResultCsReq& req);
+
+// Ends the run and puts the player back where they started.
+void leave(net::Session& session, Player& player);
+
+}  // namespace tierce
+}  // namespace game

src/game/tierce_handlers.cpp

@@ -0,0 +1,169 @@
+// The three-node challenge floor.
+//
+// StartChallengeTierce answers with the run and the arena in one response -- unlike
+// Anomaly Arbitration, this one carries its SceneInfo in the reply rather than in a
+// notify, and the same goes for the next node and a restart. Clearing a node is
+// reported with ChallengeTierceSyncNotify; the client then asks for the node after it.
+#include <utility>
+
+#include "core/logger.h"
+#include "game/handlers.h"
+#include "game/player.h"
+#include "game/tierce.h"
+#include "net/cmd_ids.h"
+#include "net/handler.h"
+#include "net/session.h"
+#include "proto/gen/protos.h"
+
+namespace game {
+namespace {
+
+Player* playerOf(net::Session& session, const char* what) {
+    Player* player = session.player();
+    if (player == nullptr) logging::warn("game", "{} before login", what);
+    return player;
+}
+
+// The team for the node being entered, so the client swaps to it before the scene.
+void pushLineup(net::Session& session, const Player& player) {
+    uint32_t stage = player.tierce().stage;
+
+    proto::ChallengeLineupNotify swap;
+    swap.extra_lineup_type = stage >= 2
+                                 ? proto::ExtraLineupType::ExtraLineupType_LineupChallenge3
+                             : stage == 1
+                                 ? proto::ExtraLineupType::ExtraLineupType_LineupChallenge2
+                                 : proto::ExtraLineupType::ExtraLineupType_LineupChallenge;
+    session.send(cmd::ChallengeLineupNotify, swap);
+
+    proto::SyncLineupNotify sync;
+    sync.lineup = tierce::lineup(player, stage);
+    session.send(cmd::SyncLineupNotify, sync);
+}
+
+void onGetChallengeTierceData(net::Session& session, const proto::GetChallengeTierceDataCsReq&) {
+    Player* player = playerOf(session, "GetChallengeTierceData");
+    if (player == nullptr) return;
+    session.send(cmd::GetChallengeTierceDataScRsp, tierce::history(*player));
+}
+
+// Asked every login. Carries the run in progress so a reconnect lands back in it.
+void onGetChallengeTierceController(net::Session& session,
+                                    const proto::GetChallengeTierceControllerCsReq&) {
+    Player* player = playerOf(session, "GetChallengeTierceController");
+    if (player == nullptr) return;
+
+    proto::GetChallengeTierceControllerScRsp rsp;
+    rsp.retcode = 0;
+    if (player->tierce().active) {
+        rsp.challenge_tierce_info = tierce::current(*player);
+    }
+    session.send(cmd::GetChallengeTierceControllerScRsp, rsp);
+}
+
+void onSetChallengeTierceLineup(net::Session& session,
+                                const proto::SetChallengeTierceLineupCsReq& req) {
+    Player* player = playerOf(session, "SetChallengeTierceLineup");
+    if (player == nullptr) return;
+
+    tierce::setLineups(*player, req.challenge_id, req.stage_info_list);
+
+    proto::SetChallengeTierceLineupScRsp rsp;
+    rsp.retcode = 0;
+    session.send(cmd::SetChallengeTierceLineupScRsp, rsp);
+}
+
+void onStartChallengeTierce(net::Session& session, const proto::StartChallengeTierceCsReq& req) {
+    Player* player = playerOf(session, "StartChallengeTierce");
+    if (player == nullptr) return;
+
+    proto::StartChallengeTierceScRsp rsp;
+    proto::SceneInfo scene;
+    rsp.retcode = tierce::start(*player, req.challenge_id, req.is_single_stage, req.stage_index,
+                                req.stage_info_list, scene);
+    if (rsp.retcode != 0) {
+        session.send(cmd::StartChallengeTierceScRsp, rsp);
+        return;
+    }
+
+    pushLineup(session, *player);
+    rsp.challenge_tierce_info = tierce::current(*player);
+    rsp.scene = std::move(scene);
+    session.send(cmd::StartChallengeTierceScRsp, rsp);
+}
+
+void onStartNextChallengeTierce(net::Session& session,
+                                const proto::StartNextChallengeTierceCsReq&) {
+    Player* player = playerOf(session, "StartNextChallengeTierce");
+    if (player == nullptr) return;
+
+    proto::StartNextChallengeTierceScRsp rsp;
+    proto::SceneInfo scene;
+    if (!tierce::nextStage(session, *player, scene)) {
+        rsp.retcode = fail(proto::Retcode::RET_CHALLENGE_NOT_EXIST);
+        session.send(cmd::StartNextChallengeTierceScRsp, rsp);
+        return;
+    }
+    rsp.retcode = 0;
+    rsp.challenge_tierce_info = tierce::current(*player);
+    rsp.scene = std::move(scene);
+    session.send(cmd::StartNextChallengeTierceScRsp, rsp);
+}
+
+void onRestartChallengeTierce(net::Session& session, const proto::RestartChallengeTierceCsReq&) {
+    Player* player = playerOf(session, "RestartChallengeTierce");
+    if (player == nullptr) return;
+
+    proto::RestartChallengeTierceScRsp rsp;
+    proto::SceneInfo scene;
+    if (!tierce::restart(session, *player, scene)) {
+        rsp.retcode = fail(proto::Retcode::RET_CHALLENGE_NOT_EXIST);
+        session.send(cmd::RestartChallengeTierceScRsp, rsp);
+        return;
+    }
+    rsp.retcode = 0;
+    rsp.GFACJIPNIAN = std::move(scene);
+    session.send(cmd::RestartChallengeTierceScRsp, rsp);
+}
+
+// The settle screen closing. Nothing to hand over -- rewards are already taken.
+void onConfirmChallengeTierceStageSettle(
+    net::Session& session, const proto::ConfirmChallengeTierceStageSettleCsReq&) {
+    proto::ConfirmChallengeTierceStageSettleScRsp rsp;
+    rsp.retcode = 0;
+    session.send(cmd::ConfirmChallengeTierceStageSettleScRsp, rsp);
+}
+
+void onLeaveChallengeTierce(net::Session& session, const proto::LeaveChallengeTierceCsReq&) {
+    Player* player = playerOf(session, "LeaveChallengeTierce");
+    if (player == nullptr) return;
+
+    tierce::leave(session, *player);
+
+    proto::LeaveChallengeTierceScRsp rsp;
+    rsp.retcode = 0;
+    session.send(cmd::LeaveChallengeTierceScRsp, rsp);
+}
+
+}  // namespace
+
+void registerTierceHandlers() {
+    net::on<proto::GetChallengeTierceDataCsReq>(cmd::GetChallengeTierceDataCsReq,
+                                                onGetChallengeTierceData);
+    net::on<proto::GetChallengeTierceControllerCsReq>(cmd::GetChallengeTierceControllerCsReq,
+                                                      onGetChallengeTierceController);
+    net::on<proto::SetChallengeTierceLineupCsReq>(cmd::SetChallengeTierceLineupCsReq,
+                                                  onSetChallengeTierceLineup);
+    net::on<proto::StartChallengeTierceCsReq>(cmd::StartChallengeTierceCsReq,
+                                              onStartChallengeTierce);
+    net::on<proto::StartNextChallengeTierceCsReq>(cmd::StartNextChallengeTierceCsReq,
+                                                  onStartNextChallengeTierce);
+    net::on<proto::RestartChallengeTierceCsReq>(cmd::RestartChallengeTierceCsReq,
+                                                onRestartChallengeTierce);
+    net::on<proto::ConfirmChallengeTierceStageSettleCsReq>(
+        cmd::ConfirmChallengeTierceStageSettleCsReq, onConfirmChallengeTierceStageSettle);
+    net::on<proto::LeaveChallengeTierceCsReq>(cmd::LeaveChallengeTierceCsReq,
+                                              onLeaveChallengeTierce);
+}
+
+}  // namespace game

src/sdk/routes.cpp

@@ -1,5 +1,8 @@
 #include "sdk/routes.h"
 
+#include <mutex>
+#include <string>
+
 #include <nlohmann/json.hpp>
 
 #include "core/config.h"
@@ -14,6 +17,9 @@ using json = nlohmann::json;
 namespace sdk {
 namespace {
 
+std::mutex versionMutex;
+std::string lastVersion;
+
 json accountBlock(const std::string& uid, const std::string& token) {
     return json{{"uid", uid},
                 {"name", ""},
@@ -101,6 +107,11 @@ std::string gatewayBody(const std::string& version) {
 
 }  // namespace
 
+std::string lastClientVersion() {
+    std::lock_guard<std::mutex> lock(versionMutex);
+    return lastVersion;
+}
+
 void registerRoutes(http::Server& server) {
     server.get("/query_dispatch", [](const http::Request&, http::Response& res) {
         res.text(dispatchBody());
@@ -108,6 +119,10 @@ void registerRoutes(http::Server& server) {
 
     server.get("/query_gateway", [](const http::Request& req, http::Response& res) {
         std::string version = req.queryValue("version");
+        {
+            std::lock_guard<std::mutex> lock(versionMutex);
+            lastVersion = version;
+        }
         logging::info("dispatch", "query_gateway version={} seed={}", version,
                   req.queryValue("dispatch_seed"));
         res.text(gatewayBody(version));

src/sdk/routes.h

@@ -6,4 +6,8 @@ namespace sdk {
 
 void registerRoutes(http::Server& server);
 
+// The client version the last gateway query named, such as "CNBETAWin4.5.54"; empty
+// until one has. The game connection that follows carries nothing that says.
+std::string lastClientVersion();
+
 }  // namespace sdk

tests/test_flow.cpp

@@ -439,6 +439,35 @@ void runFlowTests() {
         }
     }
 
+    // Every npc the client asks about comes back as already met, under the id it asked
+    // about: an empty reply is what leaves an npc with no talk option.
+    {
+        proto::GetFirstTalkNpcCsReq talk;
+        talk.npc_id_list = {1001, 1002, 1003};
+        client.send(cmd::GetFirstTalkNpcCsReq, talk);
+        check(client.await(cmd::GetFirstTalkNpcScRsp, packet), "the npc meet query answers");
+
+        proto::GetFirstTalkNpcScRsp talkRsp;
+        check(parseBody(packet, talkRsp), "the npc meet query parses");
+        check(talkRsp.npc_meet_status_list.size() == 3, "one status per npc asked about");
+        bool echoed = talkRsp.npc_meet_status_list.size() == 3;
+        for (size_t i = 0; i < talkRsp.npc_meet_status_list.size(); ++i) {
+            if (talkRsp.npc_meet_status_list[i].npc_id != talk.npc_id_list[i] ||
+                !talkRsp.npc_meet_status_list[i].is_meet) {
+                echoed = false;
+            }
+        }
+        check(echoed, "each carries its own id and is already met");
+
+        proto::GetNpcTakenRewardCsReq reward;
+        reward.npc_id = 1003;
+        client.send(cmd::GetNpcTakenRewardCsReq, reward);
+        check(client.await(cmd::GetNpcTakenRewardScRsp, packet), "the npc reward query answers");
+        proto::GetNpcTakenRewardScRsp rewardRsp;
+        check(parseBody(packet, rewardRsp), "the npc reward query parses");
+        check(rewardRsp.npc_id == 1003, "about the npc that was asked for");
+    }
+
     // A calyx, the way the Survival Index starts one: no prop to walk up to, just a
     // cocoon id and how many runs were bought.
     {
@@ -618,6 +647,282 @@ void runFlowTests() {
         check(!curRsp.cur_challenge.has(), "and there is no longer one going");
     }
 
+    // The three-node floor: the packet 4.6 starts Memory of Chaos with. Unlike the older
+    // one it carries its arena in the reply rather than in a notify.
+    {
+        proto::StartChallengeTierceCsReq start;
+        start.challenge_id = 5213;
+        for (uint32_t stage = 0; stage < 3; ++stage) {
+            proto::ChallengeTierceStageLineupInfo info;
+            proto::AvatarIdentifier one;
+            one.id = 8001;
+            proto::AvatarIdentifier two;
+            two.id = 1001;
+            info.lineup.push_back(one);
+            info.lineup.push_back(two);
+            start.stage_info_list.push_back(std::move(info));
+        }
+        client.send(cmd::StartChallengeTierceCsReq, start);
+        check(client.await(cmd::StartChallengeTierceScRsp, packet), "starting the floor answers");
+
+        proto::StartChallengeTierceScRsp startRsp;
+        check(parseBody(packet, startRsp), "the start parses");
+        check(startRsp.retcode == 0, "and was accepted");
+        check(startRsp.scene.has(), "with the arena in the reply itself");
+        check(startRsp.challenge_tierce_info.has(), "and the run");
+        if (startRsp.challenge_tierce_info) {
+            check(startRsp.challenge_tierce_info->challenge_id == 5213, "for the floor asked for");
+            check(startRsp.challenge_tierce_info->stage_index == 0, "starting on its first node");
+            check(startRsp.challenge_tierce_info->lineup_list.size() == 3, "with all three teams");
+        }
+
+        uint32_t nodeMonster = 0;
+        size_t nodeMonsters = 0;
+        if (startRsp.scene) {
+            check(startRsp.scene->entry_id == 3014002, "on the floor's own map entrance");
+            for (const proto::SceneEntityGroupInfo& group : startRsp.scene->entity_group_list) {
+                for (const proto::SceneEntityInfo& entity : group.entity_list) {
+                    if (!entity.npc_monster) continue;
+                    ++nodeMonsters;
+                    nodeMonster = entity.entity_id;
+                }
+            }
+        }
+        check(nodeMonsters == 1, "holding only the node's own monster");
+
+        if (nodeMonster != 0) {
+            proto::SceneCastSkillCsReq cast;
+            cast.cast_entity_id = 1;
+            cast.hit_target_entity_id_list.push_back(nodeMonster);
+            client.send(cmd::SceneCastSkillCsReq, cast);
+            check(client.await(cmd::SceneCastSkillScRsp, packet), "the node's fight answers");
+
+            proto::SceneCastSkillScRsp castRsp;
+            check(parseBody(packet, castRsp), "the node's fight parses");
+            check(castRsp.battle_info.has(), "a fight was started");
+            if (castRsp.battle_info) {
+                // The cycle pool is the tierce row's 45, not the floor's own 30.
+                check(castRsp.battle_info->rounds_limit == 45, "with the floor-wide cycle pool");
+                bool mazeBuff = false;
+                for (const proto::BattleBuff& buff : castRsp.battle_info->buff_list) {
+                    if (buff.id == 3030146) mazeBuff = true;
+                }
+                check(mazeBuff, "and the maze buff of the floor it extends");
+
+                proto::PVEBattleResultCsReq result;
+                result.battle_id = castRsp.battle_info->battle_id;
+                result.stage_id = castRsp.battle_info->stage_id;
+                result.end_status = proto::BattleEndStatus::BATTLE_END_WIN;
+                result.stt.emplace().round_cnt = 5;
+                client.send(cmd::PVEBattleResultCsReq, result);
+                check(client.await(cmd::PVEBattleResultScRsp, packet), "the result answers");
+
+                net::Packet syncPacket;
+                check(client.await(cmd::ChallengeTierceSyncNotify, syncPacket),
+                      "clearing a node reports it");
+            }
+        }
+
+        client.sendEmpty(cmd::StartNextChallengeTierceCsReq);
+        check(client.await(cmd::StartNextChallengeTierceScRsp, packet), "the next node answers");
+        proto::StartNextChallengeTierceScRsp nextRsp;
+        check(parseBody(packet, nextRsp), "the next node parses");
+        check(nextRsp.retcode == 0, "and was accepted");
+        check(nextRsp.scene.has(), "carrying its arena too");
+        check(nextRsp.challenge_tierce_info.has() &&
+                  nextRsp.challenge_tierce_info->stage_index == 1,
+              "on the second node now");
+
+        client.sendEmpty(cmd::LeaveChallengeTierceCsReq);
+        check(client.await(cmd::LeaveChallengeTierceScRsp, packet), "leaving answers");
+        check(client.await(cmd::EnterSceneByServerScNotify, packet), "and puts the player back");
+
+        client.sendEmpty(cmd::GetChallengeTierceDataCsReq);
+        check(client.await(cmd::GetChallengeTierceDataScRsp, packet), "the history answers");
+        proto::GetChallengeTierceDataScRsp dataRsp;
+        check(parseBody(packet, dataRsp), "the history parses");
+        bool remembered = false;
+        for (const proto::ChallengeTierceData& entry : dataRsp.challenge_info_list) {
+            if (entry.challenge_id != 5213) continue;
+            remembered = true;
+            check(!entry.result_list.empty(), "with what the run did on it");
+        }
+        check(remembered, "and the floor is in it");
+    }
+
+    // Anomaly Arbitration: a knight on its own arena -- team, start, fight, settle, retry,
+    // leave -- then season ten's boss on hard, whose arena is newer than the scene dump.
+    {
+        client.sendEmpty(cmd::GetChallengePeakDataCsReq);
+        check(client.await(cmd::GetChallengePeakDataScRsp, packet), "arbitration data answered");
+        proto::GetChallengePeakDataScRsp peakData;
+        check(parseBody(packet, peakData), "arbitration data parses");
+        check(peakData.challenge_peak_groups.size() >= 10, "with every season in it");
+        check(peakData.current_peak_group_id == 10, "and the newest on show");
+
+        proto::SetChallengePeakMobLineupAvatarCsReq teams;
+        teams.peak_group_id = 9;
+        proto::ChallengePeakLineup knightTeam;
+        knightTeam.peak_id = 901;
+        knightTeam.peak_avatar_id_list = {8001, 1001};
+        teams.lineup_list.push_back(knightTeam);
+        client.send(cmd::SetChallengePeakMobLineupAvatarCsReq, teams);
+        check(client.await(cmd::SetChallengePeakMobLineupAvatarScRsp, packet),
+              "setting a knight's team answers");
+        net::Packet groupPacket;
+        check(client.await(cmd::ChallengePeakGroupDataUpdateScNotify, groupPacket),
+              "and re-sends the season");
+        proto::ChallengePeakGroupDataUpdateScNotify groupUpdate;
+        check(parseBody(groupPacket, groupUpdate), "the season parses");
+        bool teamKept = false;
+        if (groupUpdate.challenge_peak_group) {
+            for (const proto::ChallengePeak& peak : groupUpdate.challenge_peak_group->peaks) {
+                if (peak.peak_id == 901 && peak.peak_avatar_id_list.size() == 2) teamKept = true;
+            }
+        }
+        check(teamKept, "with the team in the knight's slot");
+
+        // Sent without a team, the start falls back on the one just set.
+        proto::StartChallengePeakCsReq start;
+        start.peak_id = 901;
+        client.send(cmd::StartChallengePeakCsReq, start);
+        check(client.await(cmd::StartChallengePeakScRsp, packet), "starting a knight answers");
+        proto::StartChallengePeakScRsp startRsp;
+        check(parseBody(packet, startRsp), "the start parses");
+        check(startRsp.retcode == 0, "and was accepted");
+
+        auto arenaOf = [&](const char* what, uint32_t& monster, size_t& monsters, size_t& actors,
+                           uint32_t& entryId) {
+            net::Packet arenaPacket;
+            check(client.await(cmd::EnterSceneByServerScNotify, arenaPacket), what);
+            proto::EnterSceneByServerScNotify arena;
+            check(parseBody(arenaPacket, arena), "the arena parses");
+            monster = 0;
+            monsters = actors = 0;
+            entryId = arena.scene ? arena.scene->entry_id : 0;
+            if (!arena.scene) return;
+            for (const proto::SceneEntityGroupInfo& group : arena.scene->entity_group_list) {
+                for (const proto::SceneEntityInfo& entity : group.entity_list) {
+                    if (entity.actor) ++actors;
+                    if (!entity.npc_monster) continue;
+                    ++monsters;
+                    monster = entity.entity_id;
+                }
+            }
+        };
+        uint32_t knight = 0;
+        size_t monsters = 0;
+        size_t actors = 0;
+        uint32_t entryId = 0;
+        arenaOf("the arena went out before the response", knight, monsters, actors, entryId);
+        check(entryId == 3014501, "on the season's own arena");
+        check(monsters == 1, "with the knight and nothing else in it");
+        check(actors == 2, "and the fight's team standing in it, not the squad");
+
+        auto fight = [&](uint32_t monster, uint32_t rounds, proto::SceneBattleInfo& battle) {
+            proto::SceneCastSkillCsReq cast;
+            cast.cast_entity_id = 1;
+            cast.hit_target_entity_id_list.push_back(monster);
+            client.send(cmd::SceneCastSkillCsReq, cast);
+            check(client.await(cmd::SceneCastSkillScRsp, packet), "the fight answers");
+            proto::SceneCastSkillScRsp castRsp;
+            check(parseBody(packet, castRsp), "the fight parses");
+            check(castRsp.battle_info.has(), "a fight was started");
+            if (!castRsp.battle_info) return false;
+            battle = *castRsp.battle_info;
+
+            proto::PVEBattleResultCsReq result;
+            result.battle_id = battle.battle_id;
+            result.stage_id = battle.stage_id;
+            result.end_status = proto::BattleEndStatus::BATTLE_END_WIN;
+            result.stt.emplace().round_cnt = rounds;
+            client.send(cmd::PVEBattleResultCsReq, result);
+            check(client.await(cmd::PVEBattleResultScRsp, packet), "the result answers");
+            return true;
+        };
+        auto targetsIn = [](const proto::SceneBattleInfo& battle) {
+            auto slot = battle.battle_target_info.find(5);
+            return slot == battle.battle_target_info.end() ? size_t{0}
+                                                           : slot->second.battle_target_list.size();
+        };
+
+        proto::SceneBattleInfo battle;
+        if (knight != 0 && fight(knight, 3, battle)) {
+            check(battle.stage_id == 30509011, "against the knight's own stage");
+            check(battle.battle_avatar_list.size() == 2, "with the knight's team");
+            check(targetsIn(battle) == 3, "and its three targets");
+
+            net::Packet settlePacket;
+            check(client.await(cmd::ChallengePeakSettleScNotify, settlePacket),
+                  "winning settles the knight");
+            proto::ChallengePeakSettleScNotify settle;
+            check(parseBody(settlePacket, settle), "the settle parses");
+            check(settle.is_win && settle.peak_id == 901, "as a win for that knight");
+            // Four cycles or fewer, two or fewer, and nobody lost: three cycles meets two.
+            check(settle.finished_target_list.size() == 2, "three cycles meets two targets of three");
+        }
+
+        client.sendEmpty(cmd::GetCurChallengePeakCsReq);
+        check(client.await(cmd::GetCurChallengePeakScRsp, packet), "the fight is queryable");
+        proto::GetCurChallengePeakScRsp cur;
+        check(parseBody(packet, cur), "the fight parses");
+        check(cur.peak_id == 901, "and it is the knight");
+
+        client.sendEmpty(cmd::ReStartChallengePeakCsReq);
+        check(client.await(cmd::ReStartChallengePeakScRsp, packet), "retrying answers");
+        proto::ReStartChallengePeakScRsp restart;
+        check(parseBody(packet, restart), "the retry parses");
+        check(restart.retcode == 0, "and was accepted");
+        arenaOf("the arena went out again", knight, monsters, actors, entryId);
+        check(monsters == 1, "with the knight standing again");
+
+        client.sendEmpty(cmd::LeaveChallengePeakCsReq);
+        check(client.await(cmd::LeaveChallengePeakScRsp, packet), "leaving answers");
+        check(client.await(cmd::EnterSceneByServerScNotify, packet), "and puts the player back");
+
+        proto::SetChallengePeakBossHardModeCsReq hardMode;
+        hardMode.peak_group_id = 10;
+        hardMode.is_hard_mode = true;
+        client.send(cmd::SetChallengePeakBossHardModeCsReq, hardMode);
+        check(client.await(cmd::SetChallengePeakBossHardModeScRsp, packet), "hard mode answers");
+        proto::SetChallengePeakBossHardModeScRsp hardRsp;
+        check(parseBody(packet, hardRsp), "hard mode parses");
+        check(hardRsp.is_hard_mode && hardRsp.peak_group_id == 10, "and is echoed");
+
+        proto::StartChallengePeakCsReq bossStart;
+        bossStart.peak_id = 1004;
+        bossStart.peak_avatar_id_list = {8001, 1001};
+        client.send(cmd::StartChallengePeakCsReq, bossStart);
+        check(client.await(cmd::StartChallengePeakScRsp, packet), "starting the boss answers");
+        check(parseBody(packet, startRsp) && startRsp.retcode == 0, "and was accepted");
+        uint32_t boss = 0;
+        arenaOf("the boss arena went out", boss, monsters, actors, entryId);
+        check(entryId == 3013501, "borrowing season one's arena");
+        check(monsters == 1, "with the boss alone in it");
+
+        if (boss != 0 && fight(boss, 1, battle)) {
+            check(battle.stage_id == 30510022, "against the boss's hard stage");
+            check(targetsIn(battle) == 1, "judged by the hard target alone");
+
+            net::Packet settlePacket;
+            check(client.await(cmd::ChallengePeakSettleScNotify, settlePacket),
+                  "winning settles the boss");
+            proto::ChallengePeakSettleScNotify settle;
+            check(parseBody(settlePacket, settle), "the settle parses");
+            check(settle.is_win && settle.hard_mode_has_passed, "as a hard clear");
+        }
+
+        client.sendEmpty(cmd::LeaveChallengePeakCsReq);
+        check(client.await(cmd::LeaveChallengePeakScRsp, packet), "leaving the boss answers");
+        check(client.await(cmd::EnterSceneByServerScNotify, packet), "and puts the player back");
+
+        client.sendEmpty(cmd::GetCurChallengePeakCsReq);
+        check(client.await(cmd::GetCurChallengePeakScRsp, packet), "the run is queryable");
+        proto::GetCurChallengePeakScRsp after;
+        check(parseBody(packet, after), "the run parses");
+        check(after.peak_id == 0, "and there is no longer one going");
+    }
+
     // Every way out of a fight answers. None of these did before, which left the
     // client sitting on the defeat screen or on a half-switched party.
     client.sendEmpty(cmd::QuitBattleCsReq);

tests/test_game.cpp

@@ -18,6 +18,7 @@
 #include "game/roster.h"
 #include "game/scene.h"
 #include "game/srtools.h"
+#include "game/tierce.h"
 #include "net/packet.h"
 #include "tests/harness.h"
 
@@ -213,6 +214,27 @@ void testChallengeHistory() {
     check(rsp.max_level_list.size() == 3, "one max level per mode");
     check(rsp.serialize().size() + net::kPacketOverhead < net::kMaxKcpMessage,
           "the challenge history fits in one kcp message");
+
+    // Anomaly Arbitration. Production rows have no arena, so the beta dump fills it in,
+    // and places season ten, which production does not have at all.
+    check(tables.peakGroups().size() >= 10, "every arbitration season loaded");
+    const data::PeakInfo* knight = tables.peak(101);
+    check(knight != nullptr && knight->mapEntranceId == 3013501 && knight->eventId == 30501011,
+          "a production knight gets its arena from the beta dump");
+    check(knight != nullptr && knight->monsters.size() == 1 &&
+              knight->monsters[0].configId == data::kPeakMarkerId,
+          "and plants one monster over the arena's marker");
+    const data::PeakInfo* boss = tables.peak(1004);
+    check(boss != nullptr && boss->boss && boss->groupId == 10, "1004 is season ten's boss");
+    check(boss != nullptr && boss->mapEntranceId == 3014601 && boss->mazeGroupId == 7,
+          "on its own arena");
+    check(boss != nullptr && boss->hardEventId == 30510022 && boss->hardTarget == 3007,
+          "with a hard stage and target of its own");
+    const data::BattleTargetInfo* turns = tables.battleTarget(3001);
+    check(turns != nullptr && turns->param == 4 && !turns->countsDeaths,
+          "target 3001 is four cycles or fewer");
+    const data::BattleTargetInfo* deaths = tables.battleTarget(3000);
+    check(deaths != nullptr && deaths->countsDeaths, "target 3000 counts avatars lost");
 }
 
 void testSceneRes() {
@@ -500,7 +522,6 @@ void testBattleBuild() {
     request.casterEntityId = 1;
     request.skillIndex = 0;
     request.monsterEntityIds = {monsterEntity};
-    request.allowSrToolsOverride = false;
 
     proto::SceneBattleInfo info = game::battle::create(player, request);
     check(info.battle_id != 0, "the fight got an id");
@@ -565,6 +586,115 @@ void testBattleBuild() {
     check(!stillThere, "and can be switched off");
 }
 
+// The third node 4.6 bolts onto a floor: its own arena and monster, everything else
+// borrowed from the floor it extends.
+void testTierceRun() {
+    if (!data::SceneRes::get().loaded() || !data::Tables::get().loaded()) return;
+    const data::Tables& tables = data::Tables::get();
+
+    const data::ChallengeTierceInfo* config = tables.challengeTierce(5213);
+    check(config != nullptr, "the tierce table is loaded");
+    if (config == nullptr) return;
+    check(config->preChallengeId == 5212, "5213 extends Memory of Chaos floor 5212");
+    check(config->roundLimit == 45, "with a cycle pool for the whole floor");
+    check(config->mazeGroupId == 11, "its node is scene group 11");
+    check(config->monsters.size() == 1, "holding one planted monster");
+    check(config->targetIds.size() == 3, "and three star targets");
+    check(tables.challengeTierceFor(5212) == config, "the floor finds it the other way too");
+
+    const data::ChallengeInfo* floor = tables.challenge(config->preChallengeId);
+    check(floor != nullptr, "the floor it extends is loaded");
+    if (floor == nullptr) return;
+
+    game::Player player = makeTestPlayer();
+    std::vector<proto::ChallengeTierceStageLineupInfo> stages(3);
+    for (uint32_t stage = 0; stage < 3; ++stage) {
+        proto::AvatarIdentifier one;
+        one.id = 8001 + stage;
+        stages[stage].lineup.push_back(one);
+        stages[stage].buff_id = 1000 + stage;
+    }
+
+    proto::SceneInfo scene;
+    uint32_t retcode = game::tierce::start(player, 5213, false, 0, stages, scene);
+    check(retcode == 0, "the floor starts");
+    if (retcode != 0) return;
+    check(player.tierce().active, "the run is recorded on the player");
+    check(player.tierce().stage == 0, "on its first node");
+    check(player.tierce().roundsLeft == 45, "with the whole cycle pool");
+    check(player.location().entryId == floor->mapEntranceId,
+          "and the first node is the floor's own arena");
+
+    // The third node is the one the tierce row plants, not one of the floor's two.
+    player.tierce().stage = 2;
+    game::ChallengeArena storage;
+    const game::ChallengeArena* arena = game::tierce::arena(player, storage);
+    check(arena != nullptr && arena->mazeGroupId == config->mazeGroupId,
+          "the last node fights in the tierce's own group");
+    check(arena != nullptr && arena->monsters == &config->monsters,
+          "with the tierce's own monster");
+    player.tierce().stage = 0;
+
+    // What the node brings to a fight comes from both rows.
+    game::BattleRequest request;
+    game::tierce::prepareBattle(player, request);
+    check(request.party.size() == 1, "the node fights with its own team");
+    check(request.mazeBuffId == floor->mazeBuffId, "under the floor's maze buff");
+    check(request.stageBuffId == 1000, "and the buff picked for this node");
+    check(request.roundsLimit == 45, "with the cycles left in the pool");
+
+    // Starting again keeps the spot the first attempt left from.
+    game::SceneLocation origin = player.tierce().origin;
+    proto::SceneInfo again;
+    check(game::tierce::start(player, 5213, false, 0, stages, again) == 0, "a retry starts");
+    check(player.tierce().origin.entryId == origin.entryId, "and goes back to the same place");
+
+    // Every floor with a third node shows up in the history, under the tierce's id.
+    proto::GetChallengeTierceDataScRsp history = game::tierce::history(player);
+    bool found = false;
+    for (const proto::ChallengeTierceData& entry : history.challenge_info_list) {
+        if (entry.challenge_id != 5213) continue;
+        found = true;
+        check(entry.stage_info_list.size() == 3, "with a slot for each of its three nodes");
+    }
+    check(found, "the floor is in the history");
+}
+
+// "auto" hands a calyx over to the srtools build and leaves every other fight on the
+// stage the client named. See gameplay.battle_source.
+void testBattleSourceSplit() {
+    if (!data::Tables::get().loaded()) return;
+    if (core::Config::get().gameplay.battleSource != "auto") return;
+
+    game::Player player = makeTestPlayer();
+    game::Roster roster = player.roster();
+    const game::BattleConfig& build = roster.data().battle;
+    if (build.waves.empty() || build.stageId == 0) {
+        std::printf("SKIP battle source split (the build on disk names no fight)\n");
+        return;
+    }
+    const data::CocoonInfo* cocoon = data::Tables::get().cocoon(1001, player.worldLevel());
+    if (cocoon == nullptr || cocoon->stageIds.empty()) {
+        std::printf("SKIP battle source split (calyx 1001 is not in the tables)\n");
+        return;
+    }
+    uint32_t calyxStage = cocoon->stageIds.front();
+    check(calyxStage != build.stageId, "the calyx and the build name different stages");
+
+    game::BattleRequest calyx;
+    calyx.cocoonId = 1001;
+    calyx.wave = 1;
+    calyx.stageIds.push_back(calyxStage);
+    calyx.allowSrToolsOverride = true;
+    proto::SceneBattleInfo run = game::battle::create(player, calyx);
+    check(run.stage_id == build.stageId, "a calyx fights the srtools build");
+
+    game::BattleRequest shadow;
+    shadow.stageIds.push_back(calyxStage);
+    proto::SceneBattleInfo other = game::battle::create(player, shadow);
+    check(other.stage_id == calyxStage, "every other fight keeps its own stage");
+}
+
 // Writing an equip change back must not drop the parts of the build we do not
 // model -- the loadout presets are the user's, not ours.
 void testSrToolsRoundTrip() {
@@ -672,6 +802,9 @@ void runGameTests() {
     std::string root = util::findRootDir("config/config.json");
     if (!root.empty()) util::setCurrentDir(root);
     core::Config::get().load("config/config.json");
+    // Anything that saves goes to a scratch file: a test must never write the save a
+    // real client is using.
+    core::Config::get().paths.playerFile = "build/test-player.json";
     data::Tables::get().load(core::Config::get().paths.dataSources);
     data::SceneRes::get().load(core::Config::get().paths.sceneRes);
     data::SceneRes::get().loadAnchors(core::Config::get().paths.anchors);
@@ -688,8 +821,10 @@ void runGameTests() {
     testRosterProtos();
     testSceneBuild();
     testChallengeRun();
+    testTierceRun();
     testEveryScenePacketFits();
     testBattleBuild();
+    testBattleSourceSplit();
     testPropInteraction();
     testSrToolsRoundTrip();
 }