feat(game): add warp pulls

config/config.json

@@ -44,7 +44,9 @@
     "unlock_all_challenges": true,
     "main_character": 8008,
     "march_type": 1224,
-    "skip_missions": []
+    "skip_missions": [],
+    "limited_warp_pools": [],
+    "standard_warp_featured": 1503
   },
   "paths": {
     "srtools_file": "data/freesr-data.json",

proto/seeds.txt

@@ -297,6 +297,12 @@ GetActivityScheduleConfigCsReq
 GetActivityScheduleConfigScRsp
 DoGachaCsReq
 DoGachaScRsp
+GetGachaCeilingCsReq
+GetGachaCeilingScRsp
+ExchangeGachaCeilingCsReq
+ExchangeGachaCeilingScRsp
+SetGachaDecideItemCsReq
+SetGachaDecideItemScRsp
 GetMailCsReq
 GetMailScRsp
 GetPhoneDataCsReq

resources/excel-beta/GachaBasicInfo.json

@@ -0,0 +1,134 @@
+[
+  {
+    "GachaID": 1001,
+    "GachaType": "Normal",
+    "SortID": 99,
+    "StartTime": "",
+    "EndTime": "",
+    "PrefabPath": "UI/Drawcard/GachaPanel/StandardGacha_1001.prefab",
+    "PoolName": {
+      "Hash": 12642828881931173103
+    },
+    "PoolDesc": {
+      "Hash": 1121704090967857799
+    },
+    "PoolDescFTC": {
+      "Hash": 6970163302865048869
+    },
+    "PoolLabelIcon": "SpriteOutput/DrawCardPic/GachaTabIcon/TabIcon_Standard.png",
+    "PoolLabelIconSelected": "SpriteOutput/DrawCardPic/GachaTabIcon/TabIcon_Standard_Selected.png",
+    "TypeTitle": {
+      "Hash": 10012362747660649297
+    }
+  },
+  {
+    "GachaID": 4001,
+    "GachaType": "Newbie",
+    "SortID": 1,
+    "StartTime": "",
+    "EndTime": "",
+    "PrefabPath": "UI/Drawcard/GachaPanel/NoviceGacha_4001.prefab",
+    "PoolName": {
+      "Hash": 16076008841484912183
+    },
+    "PoolDesc": {
+      "Hash": 13113094041792250269
+    },
+    "PoolDescFTC": {
+      "Hash": 6682982103413155220
+    },
+    "PoolLabelIcon": "SpriteOutput/DrawCardPic/GachaTabIcon/TabIcon_Novice.png",
+    "PoolLabelIconSelected": "SpriteOutput/DrawCardPic/GachaTabIcon/TabIcon_Novice_Selected.png",
+    "TypeTitle": {
+      "Hash": 12992035607736039415
+    }
+  },
+  {
+    "GachaID": 2001,
+    "GachaType": "AvatarUp",
+    "SortID": 2,
+    "StartTime": "",
+    "EndTime": "",
+    "PrefabPath": "UI/Drawcard/GachaPanelLimited/AvatarGacha_1102.prefab",
+    "PoolName": {
+      "Hash": 10466444443325460861
+    },
+    "PoolDesc": {
+      "Hash": 12575760539773716760
+    },
+    "PoolDescFTC": {
+      "Hash": 9461473220466468630
+    },
+    "PoolLabelIcon": "SpriteOutput/DrawCardPic/GachaTabIconLimited/TabIcon_1102.png",
+    "PoolLabelIconSelected": "SpriteOutput/DrawCardPic/GachaTabIconLimited/TabIcon_1102_Selected.png",
+    "TypeTitle": {
+      "Hash": 16335421618088345187
+    }
+  },
+  {
+    "GachaID": 3001,
+    "GachaType": "WeaponUp",
+    "SortID": 4,
+    "StartTime": "",
+    "EndTime": "",
+    "PrefabPath": "UI/Drawcard/GachaPanelLimited/LightConeGacha_23001.prefab",
+    "PoolName": {
+      "Hash": 10051276577110162368
+    },
+    "PoolDesc": {
+      "Hash": 13567216986870304529
+    },
+    "PoolDescFTC": {
+      "Hash": 12441093686588219336
+    },
+    "PoolLabelIcon": "SpriteOutput/DrawCardPic/GachaTabIconLimited/TabIcon_LightCone_23001.png",
+    "PoolLabelIconSelected": "SpriteOutput/DrawCardPic/GachaTabIconLimited/TabIcon_LightCone_23001_Selected.png",
+    "TypeTitle": {
+      "Hash": 689370920993170148
+    }
+  },
+  {
+    "GachaID": 2002,
+    "GachaType": "AvatarUp",
+    "SortID": 3,
+    "StartTime": "",
+    "EndTime": "",
+    "PrefabPath": "UI/Drawcard/GachaPanelLimited/AvatarGacha_1204.prefab",
+    "PoolName": {
+      "Hash": 9253952357381402356
+    },
+    "PoolDesc": {
+      "Hash": 12575760539773716760
+    },
+    "PoolDescFTC": {
+      "Hash": 9461473220466468630
+    },
+    "PoolLabelIcon": "SpriteOutput/DrawCardPic/GachaTabIconLimited/TabIcon_1204.png",
+    "PoolLabelIconSelected": "SpriteOutput/DrawCardPic/GachaTabIconLimited/TabIcon_1204_Selected.png",
+    "TypeTitle": {
+      "Hash": 16335421618088345187
+    }
+  },
+  {
+    "GachaID": 3002,
+    "GachaType": "WeaponUp",
+    "SortID": 5,
+    "StartTime": "",
+    "EndTime": "",
+    "PrefabPath": "UI/Drawcard/GachaPanelLimited/LightConeGacha_23010.prefab",
+    "PoolName": {
+      "Hash": 3268726668422334764
+    },
+    "PoolDesc": {
+      "Hash": 13567216986870304529
+    },
+    "PoolDescFTC": {
+      "Hash": 12441093686588219336
+    },
+    "PoolLabelIcon": "SpriteOutput/DrawCardPic/GachaTabIconLimited/TabIcon_LightCone_23010.png",
+    "PoolLabelIconSelected": "SpriteOutput/DrawCardPic/GachaTabIconLimited/TabIcon_LightCone_23010_Selected.png",
+    "TypeTitle": {
+      "Hash": 689370920993170148
+    }
+  }
+]

resources/excel/BattlePassReward.json

@@ -0,0 +1,535 @@
+[
+  {
+    "ID": 1,
+    "RewardItem": 300011,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 2,
+    "RewardItem": 1,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 3,
+    "RewardItem": 102,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 4,
+    "RewardItem": 300003,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 5,
+    "RewardItem": 300002,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 6,
+    "RewardItem": 200103,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 7,
+    "RewardItem": 200104,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 8,
+    "RewardItem": 1,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 9,
+    "RewardItem": 201,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 10,
+    "RewardItem": 200101,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 11,
+    "RewardItem": 200102,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 12,
+    "RewardItem": 200107,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 13,
+    "RewardItem": 200108,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 14,
+    "RewardItem": 200109,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 15,
+    "RewardItem": 200110,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 16,
+    "RewardItem": 200111,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 17,
+    "RewardItem": 200112,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 18,
+    "RewardItem": 200113,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 19,
+    "RewardItem": 200114,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 20,
+    "RewardItem": 1,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 21,
+    "RewardItem": 236,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 22,
+    "RewardItem": 102,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 23,
+    "RewardItem": 300011,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 24,
+    "RewardItem": 300003,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 25,
+    "RewardItem": 201,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 26,
+    "RewardItem": 241,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 27,
+    "RewardItem": 213,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 28,
+    "RewardItem": 223,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 29,
+    "RewardItem": 235,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 30,
+    "RewardItem": 200115,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 31,
+    "RewardItem": 200116,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 32,
+    "RewardItem": 110101,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 33,
+    "RewardItem": 200117,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 34,
+    "RewardItem": 200118,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 35,
+    "RewardItem": 200119,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 36,
+    "RewardItem": 200120,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 37,
+    "RewardItem": 200121,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 38,
+    "RewardItem": 200122,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 39,
+    "RewardItem": 200123,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 40,
+    "RewardItem": 200124,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 41,
+    "RewardItem": 200125,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 42,
+    "RewardItem": 200126,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 43,
+    "RewardItem": 200127,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 44,
+    "RewardItem": 200128,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 45,
+    "RewardItem": 200129,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 46,
+    "RewardItem": 200130,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 47,
+    "RewardItem": 200131,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 48,
+    "RewardItem": 200132,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 49,
+    "RewardItem": 200133,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 50,
+    "RewardItem": 200134,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 51,
+    "RewardItem": 200135,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 52,
+    "RewardItem": 200136,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 53,
+    "RewardItem": 200137,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 54,
+    "RewardItem": 200138,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 55,
+    "RewardItem": 200139,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 56,
+    "RewardItem": 200140,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 57,
+    "RewardItem": 200141,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 58,
+    "RewardItem": 200142,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 59,
+    "RewardItem": 200143,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 60,
+    "RewardItem": 200144,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 61,
+    "RewardItem": 200145,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 62,
+    "RewardItem": 200146,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 63,
+    "RewardItem": 200147,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 64,
+    "RewardItem": 200148,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 65,
+    "RewardItem": 200149,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 66,
+    "RewardItem": 200150,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 67,
+    "RewardItem": 200151,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 68,
+    "RewardItem": 200152,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 69,
+    "RewardItem": 200153,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 70,
+    "RewardItem": 200154,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 71,
+    "RewardItem": 200155,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 72,
+    "RewardItem": 200156,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 73,
+    "RewardItem": 200157,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 74,
+    "RewardItem": 200158,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 75,
+    "RewardItem": 200159,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 76,
+    "RewardItem": 200160,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 77,
+    "RewardItem": 200161,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 78,
+    "RewardItem": 200162,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 501,
+    "RewardItem": 238,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 502,
+    "RewardItem": 237,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 503,
+    "RewardItem": 300012,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 504,
+    "RewardItem": 283,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 505,
+    "RewardItem": 300014,
+    "RewardIcon": ""
+  },
+  {
+    "ID": 1001,
+    "RewardItem": 21052,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 1002,
+    "RewardItem": 21028,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 1003,
+    "RewardItem": 21029,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 1004,
+    "RewardItem": 21030,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 1005,
+    "RewardItem": 21031,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 1006,
+    "RewardItem": 21032,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 1007,
+    "RewardItem": 21033,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 1008,
+    "RewardItem": 21034,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 1009,
+    "RewardItem": 21057,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 1010,
+    "RewardItem": 21055,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 1011,
+    "RewardItem": 21061,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 1012,
+    "RewardItem": 21053,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 1013,
+    "RewardItem": 21062,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 1014,
+    "RewardItem": 21056,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 1015,
+    "RewardItem": 21058,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 1016,
+    "RewardItem": 21060,
+    "RewardIcon": "",
+    "NumShow": true
+  },
+  {
+    "ID": 1017,
+    "RewardItem": 21065,
+    "RewardIcon": "",
+    "NumShow": true
+  }
+]

resources/excel/GachaTypeBasicInfo.json

@@ -0,0 +1,72 @@
+[
+  {
+    "GachaTypeID": "Normal",
+    "ItemCosume": 101,
+    "ItemPrice": 160,
+    "DiamondID": 1,
+    "GachaBar": "StandardGachaPage",
+    "BuyPos": {
+      "ShopID": 1000,
+      "ShopGoodID": 1000001
+    }
+  },
+  {
+    "GachaTypeID": "Newbie",
+    "ItemCosume": 101,
+    "ItemPrice": 160,
+    "DiamondID": 1,
+    "GachaBar": "StandardGachaPage",
+    "BuyPos": {
+      "ShopID": 1000,
+      "ShopGoodID": 1000001
+    }
+  },
+  {
+    "GachaTypeID": "AvatarUp",
+    "UpPropability": 50,
+    "ItemCosume": 102,
+    "ItemPrice": 160,
+    "DiamondID": 1,
+    "GachaBar": "CharacterGachaPage",
+    "BuyPos": {
+      "ShopID": 1000,
+      "ShopGoodID": 1000002
+    }
+  },
+  {
+    "GachaTypeID": "WeaponUp",
+    "UpPropability": 75,
+    "ItemCosume": 102,
+    "ItemPrice": 160,
+    "DiamondID": 1,
+    "GachaBar": "LightconeGachaPage",
+    "BuyPos": {
+      "ShopID": 1000,
+      "ShopGoodID": 1000002
+    }
+  },
+  {
+    "GachaTypeID": "CollaborationAvatarUp",
+    "UpPropability": 50,
+    "ItemCosume": 102,
+    "ItemPrice": 160,
+    "DiamondID": 1,
+    "GachaBar": "CharacterGachaPage",
+    "BuyPos": {
+      "ShopID": 1000,
+      "ShopGoodID": 1000002
+    }
+  },
+  {
+    "GachaTypeID": "CollaborationWeaponUp",
+    "UpPropability": 75,
+    "ItemCosume": 102,
+    "ItemPrice": 160,
+    "DiamondID": 1,
+    "GachaBar": "LightconeGachaPage",
+    "BuyPos": {
+      "ShopID": 1000,
+      "ShopGoodID": 1000002
+    }
+  }
+]

src/core/config.cpp

@@ -105,6 +105,25 @@ bool Config::load(const std::string& path) {
         pick(*it, "main_character", gameplay.mainCharacter);
         pick(*it, "march_type", gameplay.marchType);
         pick(*it, "skip_missions", gameplay.skipMissions);
+        // Each entry is a pool id, or {"id": pool, "featured": 5* id}.
+        if (auto pools = it->find("limited_warp_pools"); pools != it->end() && pools->is_array()) {
+            gameplay.limitedWarpPools.clear();
+            for (const json& entry : *pools) {
+                WarpBanner banner;
+                if (entry.is_number_unsigned()) {
+                    banner.id = entry.get<uint32_t>();
+                } else if (entry.is_object()) {
+                    pick(entry, "id", banner.id);
+                    pick(entry, "featured", banner.featured);
+                }
+                if (banner.id == 0) {
+                    logging::warn("config", "a limited_warp_pools entry has no pool id");
+                    continue;
+                }
+                gameplay.limitedWarpPools.push_back(banner);
+            }
+        }
+        pick(*it, "standard_warp_featured", gameplay.standardWarpFeatured);
     }
     return true;
 }

src/core/config.h

@@ -58,6 +58,11 @@ struct PathsConfig {
     std::string resources = "resources";
 };
 
+struct WarpBanner {
+    uint32_t id = 0;
+    uint32_t featured = 0;  // 0 keeps the pool's own
+};
+
 struct GameplayConfig {
     // 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.
@@ -74,6 +79,13 @@ struct GameplayConfig {
     // 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;
+    // Limited warp pools offered next to the standard one, each optionally featuring another
+    // 5*. The beta clients list 2001, 2002, 3001 and 3002 but ship no banner art for any of
+    // them, and one pool without art turns the whole warp page black, so leave it empty there.
+    std::vector<WarpBanner> limitedWarpPools;
+    // A 5* character Stellar Warp features, 50/50 and guarantee included, standing in for
+    // the current banner the beta clients have no art for. 0 keeps it the standard pool.
+    uint32_t standardWarpFeatured = 0;
 
     bool missionSkipped(uint32_t id) const {
         return std::find(skipMissions.begin(), skipMissions.end(), id) != skipMissions.end();

src/data/excel.cpp

@@ -2,6 +2,7 @@
 
 #include <algorithm>
 #include <cstdlib>
+#include <string_view>
 
 #include <nlohmann/json.hpp>
 
@@ -77,6 +78,35 @@ std::vector<uint32_t> u32List(const json& j, const char* key) {
     return out;
 }
 
+// "CombatPowerAvatarRarityType5", "CombatPowerLightconeRarity4": the stars are the last digit.
+uint32_t rarityOf(const json& row) {
+    auto it = row.find("Rarity");
+    if (it == row.end()) return 0;
+    if (it->is_number()) return static_cast<uint32_t>(numberOf(*it));
+    if (!it->is_string()) return 0;
+    const std::string& name = it->get_ref<const std::string&>();
+    char last = name.empty() ? '\0' : name.back();
+    return (last >= '1' && last <= '9') ? static_cast<uint32_t>(last - '0') : 0;
+}
+
+// ".../AvatarGacha_1102.prefab" -> 1102. The Sub* prefabs belong to a grouped pool and
+// give 0.
+uint32_t featuredFromPrefab(const std::string& path, std::string_view stem) {
+    size_t slash = path.find_last_of('/');
+    std::string_view file(path);
+    if (slash != std::string::npos) file.remove_prefix(slash + 1);
+    constexpr std::string_view suffix = ".prefab";
+    if (file.size() <= stem.size() + suffix.size() || file.substr(0, stem.size()) != stem ||
+        file.substr(file.size() - suffix.size()) != suffix) {
+        return 0;
+    }
+    std::string_view digits = file.substr(stem.size(), file.size() - stem.size() - suffix.size());
+    if (digits.size() > 9 || digits.find_first_not_of("0123456789") != std::string_view::npos) {
+        return 0;
+    }
+    return static_cast<uint32_t>(std::strtoul(std::string(digits).c_str(), nullptr, 10));
+}
+
 // AvatarSkillTreeConfig.AnchorType is "Point07"; the client wants the number.
 uint32_t anchorNumber(const std::string& anchor) {
     size_t i = 0;
@@ -180,6 +210,23 @@ const AvatarInfo* Tables::avatar(uint32_t id) const {
     return it == avatars_.end() ? nullptr : &it->second;
 }
 
+const LightconeInfo* Tables::lightcone(uint32_t id) const {
+    auto it = lightcones_.find(id);
+    return it == lightcones_.end() ? nullptr : &it->second;
+}
+
+uint32_t Tables::gachaUpChance(GachaType type) const {
+    switch (type) {
+        case GachaType::AvatarUp:
+            return avatarUpChance_;
+        case GachaType::WeaponUp:
+            return weaponUpChance_;
+        case GachaType::Normal:
+            break;
+    }
+    return 0;
+}
+
 const StageInfo* Tables::stage(uint32_t id) const {
     auto it = stages_.find(id);
     return it == stages_.end() ? nullptr : &it->second;
@@ -331,6 +378,7 @@ bool Tables::load(const std::vector<std::string>& sources) {
     uint64_t started = util::nowMs();
     size_t used = 0;
     bool standardGachaFound = false;
+    std::unordered_map<std::string, uint32_t> upChances;
 
     for (const std::string& dir : sources) {
         json doc;
@@ -356,6 +404,7 @@ bool Tables::load(const std::vector<std::string>& sources) {
             info.baseType = str(*row, "AvatarBaseType");
             info.maxPromotion = u32(*row, "MaxPromotion", 6);
             info.maxRank = u32(*row, "MaxRank", 6);
+            info.rarity = rarityOf(*row);
             // SPNeed is in whole points; SpBarInfo counts hundredths.
             uint32_t spNeed = u32(*row, "SPNeed");
             info.spNeed = spNeed != 0 ? spNeed * 100 : 10000;
@@ -503,12 +552,48 @@ bool Tables::load(const std::vector<std::string>& sources) {
             farmStages_.insert(stageId);
         }
 
-        for (const json* row : table("GachaBasicInfo.json")) {
+        for (const json* row : table("GachaTypeBasicInfo.json")) {
-            if (standardGachaFound || str(*row, "GachaType") != "Normal") continue;
+            std::string type = str(*row, "GachaTypeID");
+            if (!type.empty()) upChances.emplace(type, u32(*row, "UpPropability"));
+        }
+        // The client throws on a pool its own table lacks, and the beta table is a six-row
+        // stub, so here the last source with the table wins instead of the first.
+        const std::vector<const json*>& gachaRows = table("GachaBasicInfo.json");
+        if (!gachaRows.empty()) {
+            gachaPools_.clear();
+            standardGachaFound = false;
+        }
+        for (const json* row : gachaRows) {
             uint32_t id = u32(*row, "GachaID");
             if (id == 0) continue;
+            std::string type = str(*row, "GachaType");
+            GachaPool pool;
+            pool.id = id;
+            if (type == "Normal") {
+                if (standardGachaFound && id != standardGacha_.gachaId) continue;
                 standardGacha_.gachaId = id;
                 standardGachaFound = true;
+            } else if (type == "AvatarUp") {
+                pool.type = GachaType::AvatarUp;
+                pool.featured = featuredFromPrefab(str(*row, "PrefabPath"), "AvatarGacha_");
+            } else if (type == "WeaponUp") {
+                pool.type = GachaType::WeaponUp;
+                pool.featured = featuredFromPrefab(str(*row, "PrefabPath"), "LightConeGacha_");
+            } else {
+                continue;
+            }
+            if (pool.type != GachaType::Normal && pool.featured == 0) continue;
+            gachaPools_.push_back(pool);
+        }
+
+        for (const json* row : table("EquipmentConfig.json")) {
+            uint32_t id = u32(*row, "EquipmentID");
+            if (id == 0 || lightcones_.count(id) != 0) continue;
+            lightcones_.emplace(id, LightconeInfo{id, rarityOf(*row)});
+        }
+        for (const json* row : table("BattlePassReward.json")) {
+            uint32_t item = u32(*row, "RewardItem");
+            if (item != 0) battlePassRewards_.insert(item);
         }
         for (const json* row : table("GachaCeiling.json")) {
             if (!standardGacha_.ceilingAvatars.empty() || str(*row, "GachaType") != "Normal") {
@@ -744,6 +829,24 @@ bool Tables::load(const std::vector<std::string>& sources) {
     sortById(challenges_);
     sortById(challengeGroups_);
     sortById(peakGroups_);
+    sortById(gachaPools_);
+
+    // The defaults are GachaTypeBasicInfo's own numbers, for when the table is missing.
+    if (auto it = upChances.find("AvatarUp"); it != upChances.end()) avatarUpChance_ = it->second;
+    if (auto it = upChances.find("WeaponUp"); it != upChances.end()) weaponUpChance_ = it->second;
+    for (GachaPool& pool : gachaPools_) pool.upChance = gachaUpChance(pool.type);
+    // A featured 5* the tables do not have cannot be drawn.
+    std::erase_if(gachaPools_, [&](const GachaPool& pool) {
+        if (pool.type == GachaType::AvatarUp) {
+            const AvatarInfo* info = avatar(pool.featured);
+            return info == nullptr || info->rarity != 5;
+        }
+        if (pool.type == GachaType::WeaponUp) {
+            const LightconeInfo* info = lightcone(pool.featured);
+            return info == nullptr || info->rarity != 5;
+        }
+        return false;
+    });
 
     // Each fight learns its season, and plants its one monster over the arena's marker.
     for (const PeakGroupInfo& group : peakGroups_) {
@@ -779,6 +882,7 @@ bool Tables::load(const std::vector<std::string>& sources) {
                   entrances_.size(), planeEvents_.size(), used, util::nowMs() - started);
     logging::info("data", "{} challenge floors in {} seasons, {} of them with a third node",
                   challenges_.size(), challengeGroups_.size(), challengeTierces_.size());
+    logging::info("data", "{} lightcones, {} warp pools", lightcones_.size(), gachaPools_.size());
     logging::info("data", "{} main missions, {} tutorials, {} guides, {} quests",
                   mainMissions_.size(), tutorials_.size(), tutorialGuides_.size(),
                   quests_.size());

src/data/excel.h

@@ -18,6 +18,7 @@ struct AvatarInfo {
     uint32_t spNeed = 10000;  // hundredths, as the SpBarInfo wants it
     uint32_t maxPromotion = 6;
     uint32_t maxRank = 6;
+    uint32_t rarity = 0;
     uint32_t enhancedId = 0;
     uint32_t attackBuffId = 0;
     // AvatarDefaultMazeBuff; falls back to id * 100 + 1 when the row is missing.
@@ -25,6 +26,21 @@ struct AvatarInfo {
     uint32_t techniqueSkillIndex = 2;
 };
 
+struct LightconeInfo {
+    uint32_t id = 0;
+    uint32_t rarity = 0;
+};
+
+enum class GachaType { Normal, AvatarUp, WeaponUp };
+
+// A warp pool. A limited one is named after its featured 5* in its prefab.
+struct GachaPool {
+    uint32_t id = 0;
+    GachaType type = GachaType::Normal;
+    uint32_t featured = 0;
+    uint32_t upChance = 0;  // percent
+};
+
 struct SkillTreePoint {
     uint32_t pointId = 0;
     uint32_t avatarId = 0;
@@ -247,6 +263,15 @@ public:
     uint32_t farmElementStage(uint32_t idOrStage, uint32_t worldLevel) const;
 
     const StandardGacha& standardGacha() const { return standardGacha_; }
+    // The standard pool, then the limited ones in id order.
+    const std::vector<GachaPool>& gachaPools() const { return gachaPools_; }
+    // GachaTypeBasicInfo.UpPropability, in percent; 0 for the standard pool.
+    uint32_t gachaUpChance(GachaType type) const;
+
+    const LightconeInfo* lightcone(uint32_t id) const;
+    const std::unordered_map<uint32_t, LightconeInfo>& lightcones() const { return lightcones_; }
+    // BattlePassReward: paid out by the pass, never by a warp.
+    bool battlePassReward(uint32_t itemId) const { return battlePassRewards_.count(itemId) != 0; }
 
     // AvatarMazeBuff rows named ADV_GlobalSkill_Maze*: Castorice and Silver Wolf.
     const std::vector<uint32_t>& globalMazeBuffs() const { return globalMazeBuffs_; }
@@ -300,6 +325,11 @@ private:
     std::unordered_map<uint64_t, uint32_t> farmElements_;  // id * 100 + worldLevel -> stage
     std::unordered_set<uint32_t> farmStages_;
     StandardGacha standardGacha_;
+    std::vector<GachaPool> gachaPools_;
+    uint32_t avatarUpChance_ = 50;
+    uint32_t weaponUpChance_ = 75;
+    std::unordered_map<uint32_t, LightconeInfo> lightcones_;
+    std::unordered_set<uint32_t> battlePassRewards_;
     std::vector<uint32_t> globalMazeBuffs_;
     std::vector<uint32_t> mainMissions_;
     std::vector<uint32_t> tutorials_;

src/game/gacha.cpp

@@ -0,0 +1,244 @@
+#include "game/gacha.h"
+
+#include <algorithm>
+
+#include "core/util.h"
+
+namespace game {
+namespace {
+
+// Stellar Warp's 5* light cones; no table lists them.
+constexpr uint32_t kStandardLightcones[] = {23000, 23002, 23003, 23004, 23005, 23012, 23013};
+
+constexpr uint32_t kUndyingEmbers = 251;
+constexpr uint32_t kUndyingStarlight = 252;
+constexpr uint32_t kEidolonItemOffset = 10000;
+constexpr uint32_t kFourStarPity = 10;
+
+struct Rates {
+    uint32_t hardPity;
+    uint32_t softPity;
+    double base;
+    double step;
+    double fourStar;
+};
+
+// 0.6%, +6% a pull from 74, certain at 90. Light cones: 0.8%, +7% from 66, certain at 80.
+constexpr Rates kCharacterRates{90, 74, 0.006, 0.06, 0.051};
+constexpr Rates kLightconeRates{80, 66, 0.008, 0.07, 0.066};
+
+double fiveStarChance(const Rates& rates, uint32_t pullNumber) {
+    if (pullNumber >= rates.hardPity) return 1.0;
+    if (pullNumber < rates.softPity) return rates.base;
+    return std::min(1.0, rates.base + rates.step * (pullNumber - rates.softPity + 1));
+}
+
+uint32_t pick(const std::vector<uint32_t>& ids, const GachaRoll& roll) {
+    size_t index = static_cast<size_t>(roll() * static_cast<double>(ids.size()));
+    return ids[std::min(index, ids.size() - 1)];
+}
+
+GachaPull pullOne(const data::GachaPool& pool, const GachaItemPools& items, GachaPity& pity,
+                  const GachaRoll& roll) {
+    const Rates& rates = pool.type == data::GachaType::WeaponUp ? kLightconeRates : kCharacterRates;
+    ++pity.total;
+    GachaPull pull;
+
+    if (roll() < fiveStarChance(rates, pity.sinceFive + 1)) {
+        pull.rarity = 5;
+        pity.sinceFive = 0;
+        // A 5* does not use up the 4* guarantee; it lands on the next pull instead.
+        ++pity.sinceFour;
+        if (pool.type == data::GachaType::Normal) {
+            pull.avatar = roll() < 0.5;
+            pull.itemId = pick(pull.avatar ? items.fiveStarAvatars : items.fiveStarLightcones, roll);
+            return pull;
+        }
+        pull.avatar = pool.type == data::GachaType::AvatarUp;
+        std::vector<uint32_t> others;
+        for (uint32_t id : pull.avatar ? items.fiveStarAvatars : items.fiveStarLightcones) {
+            if (id != pool.featured) others.push_back(id);
+        }
+        pull.guaranteed = pity.guaranteed;
+        pull.featured = pity.guaranteed || others.empty() || roll() * 100.0 < pool.upChance;
+        pity.guaranteed = !pull.featured;
+        pull.itemId = pull.featured ? pool.featured : pick(others, roll);
+        return pull;
+    }
+
+    ++pity.sinceFive;
+    if (pity.sinceFour + 1 >= kFourStarPity || roll() < rates.fourStar) {
+        pull.rarity = 4;
+        pity.sinceFour = 0;
+        pull.avatar = roll() < 0.5;
+        pull.itemId = pick(pull.avatar ? items.fourStarAvatars : items.fourStarLightcones, roll);
+        return pull;
+    }
+
+    ++pity.sinceFour;
+    pull.itemId = pick(items.threeStarLightcones, roll);
+    return pull;
+}
+
+}  // namespace
+
+GachaPity& GachaProgress::forType(data::GachaType type) {
+    switch (type) {
+        case data::GachaType::AvatarUp:
+            return character;
+        case data::GachaType::WeaponUp:
+            return lightcone;
+        case data::GachaType::Normal:
+            break;
+    }
+    return standard;
+}
+
+bool GachaItemPools::complete() const {
+    return !fiveStarAvatars.empty() && !fiveStarLightcones.empty() && !fourStarAvatars.empty() &&
+           !fourStarLightcones.empty() && !threeStarLightcones.empty();
+}
+
+GachaItemPools gachaItemPools(const data::Tables& tables) {
+    GachaItemPools items;
+    items.fiveStarAvatars = tables.standardGacha().ceilingAvatars;
+    for (uint32_t id : kStandardLightcones) {
+        const data::LightconeInfo* info = tables.lightcone(id);
+        if (info != nullptr && info->rarity == 5) items.fiveStarLightcones.push_back(id);
+    }
+    for (const auto& [id, avatar] : tables.avatars()) {
+        // Playable ids, with March's second form and the Trailblazer's paths folded away.
+        if (avatar.rarity != 4 || id < 1000 || id >= 2000 || tables.baseAvatarId(id) != id) continue;
+        items.fourStarAvatars.push_back(id);
+    }
+    for (const auto& [id, lightcone] : tables.lightcones()) {
+        // 22xxx are event rewards.
+        if (id >= 22000 || tables.battlePassReward(id)) continue;
+        if (lightcone.rarity == 4) items.fourStarLightcones.push_back(id);
+        if (lightcone.rarity == 3) items.threeStarLightcones.push_back(id);
+    }
+    std::sort(items.fourStarAvatars.begin(), items.fourStarAvatars.end());
+    std::sort(items.fourStarLightcones.begin(), items.fourStarLightcones.end());
+    std::sort(items.threeStarLightcones.begin(), items.threeStarLightcones.end());
+    return items;
+}
+
+double gachaRoll() { return static_cast<double>(util::randomU64() >> 11) * 0x1.0p-53; }
+
+namespace {
+
+bool featurable(const data::Tables& tables, data::GachaType type, uint32_t id) {
+    if (type == data::GachaType::AvatarUp) {
+        const data::AvatarInfo* avatar = tables.avatar(id);
+        return avatar != nullptr && avatar->rarity == 5;
+    }
+    if (type == data::GachaType::WeaponUp) {
+        const data::LightconeInfo* lightcone = tables.lightcone(id);
+        return lightcone != nullptr && lightcone->rarity == 5;
+    }
+    return false;
+}
+
+}  // namespace
+
+std::vector<data::GachaPool> offeredGachaPools(const data::Tables& tables,
+                                               const std::vector<core::WarpBanner>& limited) {
+    const std::vector<data::GachaPool>& pools = tables.gachaPools();
+    auto find = [&pools](uint32_t id) -> const data::GachaPool* {
+        for (const data::GachaPool& pool : pools) {
+            if (pool.id == id) return &pool;
+        }
+        return nullptr;
+    };
+
+    std::vector<data::GachaPool> offered;
+    const data::GachaPool* standard = find(tables.standardGacha().gachaId);
+    if (standard != nullptr && standard->type == data::GachaType::Normal) offered.push_back(*standard);
+    for (const core::WarpBanner& banner : limited) {
+        const data::GachaPool* pool = find(banner.id);
+        if (pool == nullptr || pool->type == data::GachaType::Normal) continue;
+        bool taken = std::any_of(offered.begin(), offered.end(),
+                                 [pool](const data::GachaPool& p) { return p.id == pool->id; });
+        if (taken) continue;
+        data::GachaPool entry = *pool;
+        if (banner.featured != 0 && featurable(tables, entry.type, banner.featured)) {
+            entry.featured = banner.featured;
+        }
+        offered.push_back(std::move(entry));
+    }
+    return offered;
+}
+
+std::optional<data::GachaPool> offeredGachaPool(const data::Tables& tables,
+                                                const std::vector<core::WarpBanner>& limited,
+                                                uint32_t gachaId) {
+    for (data::GachaPool& pool : offeredGachaPools(tables, limited)) {
+        if (pool.id == gachaId) return std::move(pool);
+    }
+    return std::nullopt;
+}
+
+data::GachaPool effectiveGachaPool(const data::GachaPool& pool, const data::Tables& tables,
+                                   uint32_t standardFeatured) {
+    if (pool.type != data::GachaType::Normal || standardFeatured == 0) return pool;
+    if (!featurable(tables, data::GachaType::AvatarUp, standardFeatured)) return pool;
+    data::GachaPool banner = pool;
+    banner.type = data::GachaType::AvatarUp;
+    banner.featured = standardFeatured;
+    banner.upChance = tables.gachaUpChance(data::GachaType::AvatarUp);
+    return banner;
+}
+
+std::vector<GachaPull> pullGacha(const data::GachaPool& pool, const GachaItemPools& items,
+                                 GachaPity& pity, uint32_t count, const GachaRoll& roll) {
+    std::vector<GachaPull> pulls;
+    pulls.reserve(count);
+    for (uint32_t i = 0; i < count; ++i) pulls.push_back(pullOne(pool, items, pity, roll));
+    return pulls;
+}
+
+proto::GachaItem gachaResult(const GachaPull& pull, const SrToolsData& roster) {
+    proto::GachaItem result;
+    proto::Item& item = result.gacha_item.emplace();
+    item.item_id = pull.itemId;
+    item.num = 1;
+    item.level = 1;
+    item.rank = 1;
+    // Both lists go out even when empty.
+    proto::ItemList& transfer = result.transfer_item_list.emplace();
+    proto::ItemList& tokens = result.token_item.emplace();
+    auto token = [&tokens](uint32_t id, uint32_t num) {
+        proto::Item entry;
+        entry.item_id = id;
+        entry.num = num;
+        tokens.item_list.push_back(entry);
+    };
+
+    if (!pull.avatar) {
+        if (pull.rarity == 3) {
+            token(kUndyingEmbers, 20);
+        } else {
+            token(kUndyingStarlight, pull.rarity == 5 ? 40 : 8);
+        }
+        return result;
+    }
+
+    auto owned = roster.avatars.find(pull.itemId);
+    if (owned == roster.avatars.end()) {
+        result.is_new = true;
+        return result;
+    }
+    bool fiveStar = pull.rarity == 5;
+    if (owned->second.rank >= 6) {
+        token(kUndyingStarlight, fiveStar ? 100 : 20);
+        return result;
+    }
+    token(kUndyingStarlight, fiveStar ? 40 : 8);
+    proto::Item eidolon;
+    eidolon.item_id = pull.itemId + kEidolonItemOffset;
+    eidolon.num = 1;
+    transfer.item_list.push_back(eidolon);
+    return result;
+}
+
+}  // namespace game

src/game/gacha.h

@@ -0,0 +1,75 @@
+#pragma once
+
+#include <cstdint>
+#include <functional>
+#include <optional>
+#include <string>
+#include <vector>
+
+#include "core/config.h"
+#include "data/excel.h"
+#include "game/srtools.h"
+#include "proto/gen/protos.h"
+
+namespace game {
+
+struct GachaPity {
+    uint32_t sinceFive = 0;
+    uint32_t sinceFour = 0;
+    bool guaranteed = false;  // the next 5* is the featured one
+    uint32_t total = 0;
+};
+
+// Every limited pool of one kind shares its counter.
+struct GachaProgress {
+    GachaPity standard;
+    GachaPity character;
+    GachaPity lightcone;
+
+    GachaPity& forType(data::GachaType type);
+};
+
+struct GachaItemPools {
+    std::vector<uint32_t> fiveStarAvatars;
+    std::vector<uint32_t> fiveStarLightcones;
+    std::vector<uint32_t> fourStarAvatars;
+    std::vector<uint32_t> fourStarLightcones;
+    std::vector<uint32_t> threeStarLightcones;
+
+    bool complete() const;
+};
+
+GachaItemPools gachaItemPools(const data::Tables& tables);
+
+struct GachaPull {
+    uint32_t itemId = 0;
+    uint32_t rarity = 3;
+    bool avatar = false;
+    bool featured = false;    // a limited 5* that was the featured one
+    bool guaranteed = false;  // and was owed it by an earlier lost 50/50
+};
+
+// Uniform in [0, 1); injectable so the rates can be tested.
+using GachaRoll = std::function<double()>;
+double gachaRoll();
+
+// The standard pool, then each configured limited pool the tables have, featuring what the
+// config names. An override that is not a 5* of the pool's kind is ignored.
+std::vector<data::GachaPool> offeredGachaPools(const data::Tables& tables,
+                                               const std::vector<core::WarpBanner>& limited);
+std::optional<data::GachaPool> offeredGachaPool(const data::Tables& tables,
+                                                const std::vector<core::WarpBanner>& limited,
+                                                uint32_t gachaId);
+// The standard pool as a character banner featuring `standardFeatured`. Anything but a 5*
+// character leaves the pool as it is, and so does any limited pool.
+data::GachaPool effectiveGachaPool(const data::GachaPool& pool, const data::Tables& tables,
+                                   uint32_t standardFeatured);
+
+// `items` must be complete().
+std::vector<GachaPull> pullGacha(const data::GachaPool& pool, const GachaItemPools& items,
+                                 GachaPity& pity, uint32_t count, const GachaRoll& roll);
+
+// The result card. Nothing is granted: the srtools build stays the roster.
+proto::GachaItem gachaResult(const GachaPull& pull, const SrToolsData& roster);
+
+}  // namespace game

src/game/gacha_handlers.cpp

@@ -0,0 +1,143 @@
+#include <algorithm>
+#include <cstdint>
+#include <optional>
+#include <vector>
+
+#include "core/config.h"
+#include "core/logger.h"
+#include "core/util.h"
+#include "data/excel.h"
+#include "game/gacha.h"
+#include "game/handlers.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 {
+
+constexpr int64_t kLimitedEndTime = 4102416000;  // 2100-01-01
+// Character pools carry this in item_detail_list.
+constexpr uint32_t kAvatarPoolDetail = 11;
+
+// Always claimed: nothing is granted, so the 300-pull pick has nothing to pay out.
+proto::GachaCeiling standardCeiling(const Player* player) {
+    const data::StandardGacha& standard = data::Tables::get().standardGacha();
+    proto::GachaCeiling ceiling;
+    ceiling.is_claimed = true;
+    uint32_t pulls = player != nullptr ? player->gacha().standard.total : 0;
+    ceiling.ceiling_num = std::min(pulls, standard.ceilingNum);
+    for (uint32_t avatarId : standard.ceilingAvatars) {
+        proto::GachaCeilingAvatar avatar;
+        avatar.avatar_id = avatarId;
+        ceiling.avatar_list.push_back(avatar);
+    }
+    return ceiling;
+}
+
+void onGetGachaInfo(net::Session& session, const proto::GetGachaInfoCsReq&) {
+    proto::GetGachaInfoScRsp rsp;
+    rsp.retcode = 0;
+    rsp.gacha_random = util::randomRange(1000, 1999);
+    const std::vector<core::WarpBanner>& limited = core::Config::get().gameplay.limitedWarpPools;
+    for (const data::GachaPool& pool : offeredGachaPools(data::Tables::get(), limited)) {
+        proto::GachaInfo& info = rsp.gacha_info_list.emplace_back();
+        info.gacha_id = pool.id;
+        if (pool.type == data::GachaType::Normal) {
+            info.gacha_ceiling.emplace() = standardCeiling(session.player());
+            continue;
+        }
+        info.end_time = kLimitedEndTime;
+        info.prize_item_list.push_back(pool.featured);
+        if (pool.type == data::GachaType::AvatarUp) info.item_detail_list.push_back(kAvatarPoolDetail);
+    }
+    session.send(cmd::GetGachaInfoScRsp, rsp);
+}
+
+void onDoGacha(net::Session& session, const proto::DoGachaCsReq& req) {
+    proto::DoGachaScRsp rsp;
+    rsp.gacha_id = req.gacha_id;
+    rsp.gacha_num = req.gacha_num;
+
+    Player* player = session.player();
+    const data::Tables& tables = data::Tables::get();
+    std::optional<data::GachaPool> pool =
+        offeredGachaPool(tables, core::Config::get().gameplay.limitedWarpPools, req.gacha_id);
+    if (player == nullptr) {
+        rsp.retcode = fail(proto::Retcode::RET_FAIL);
+    } else if (!pool) {
+        rsp.retcode = fail(proto::Retcode::RET_GACHA_ID_NOT_EXIST);
+    } else if (req.gacha_num != 1 && req.gacha_num != 10) {
+        rsp.retcode = fail(proto::Retcode::RET_GACHA_NUM_INVALID);
+    } else {
+        GachaItemPools items = gachaItemPools(tables);
+        if (!items.complete()) {
+            logging::warn("game", "warp {} has an empty item pool, check the tables", pool->id);
+            rsp.retcode = fail(proto::Retcode::RET_GACHA_NOT_SUPPORT);
+        } else {
+            uint32_t featured = core::Config::get().gameplay.standardWarpFeatured;
+            data::GachaPool banner = effectiveGachaPool(*pool, tables, featured);
+            if (pool->type == data::GachaType::Normal && featured != 0 && banner.featured == 0) {
+                logging::warn("game", "standard_warp_featured {} is not a 5* character", featured);
+            }
+            Roster roster = player->roster();
+            GachaPity& pity = player->gacha().forType(banner.type);
+            uint32_t fiveStars = 0;
+            for (const GachaPull& pull : pullGacha(banner, items, pity, req.gacha_num, gachaRoll)) {
+                if (pull.rarity == 5) {
+                    ++fiveStars;
+                    const char* how = banner.type == data::GachaType::Normal ? "standard"
+                                      : pull.guaranteed                      ? "guaranteed"
+                                      : pull.featured                        ? "won the 50/50"
+                                                                             : "lost the 50/50";
+                    logging::info("game", "warp {} 5*: {} ({})", banner.id, pull.itemId, how);
+                }
+                rsp.gacha_item_list.push_back(gachaResult(pull, roster.data()));
+            }
+            player->saveNow();
+            logging::info("game", "warp {} x{}: {} 5*, {} pulls since the last", banner.id,
+                          req.gacha_num, fiveStars, pity.sinceFive);
+        }
+    }
+    session.send(cmd::DoGachaScRsp, rsp);
+}
+
+void onGetGachaCeiling(net::Session& session, const proto::GetGachaCeilingCsReq& req) {
+    proto::GetGachaCeilingScRsp rsp;
+    rsp.retcode = 0;
+    rsp.gacha_type = req.DDMCNOJFGON;
+    rsp.gacha_ceiling.emplace() = standardCeiling(session.player());
+    session.send(cmd::GetGachaCeilingScRsp, rsp);
+}
+
+void onExchangeGachaCeiling(net::Session& session, const proto::ExchangeGachaCeilingCsReq& req) {
+    proto::ExchangeGachaCeilingScRsp rsp;
+    rsp.retcode = fail(proto::Retcode::RET_GACHA_CEILING_CLOSE);
+    rsp.gacha_type = req.gacha_type;
+    rsp.avatar_id = req.avatar_id;
+    rsp.gacha_ceiling.emplace() = standardCeiling(session.player());
+    rsp.transfer_item_list.emplace();
+    session.send(cmd::ExchangeGachaCeilingScRsp, rsp);
+}
+
+// A lost 50/50 always draws from the standard seven, so a custom pick is refused.
+void onSetGachaDecideItem(net::Session& session, const proto::SetGachaDecideItemCsReq&) {
+    proto::SetGachaDecideItemScRsp rsp;
+    rsp.retcode = fail(proto::Retcode::RET_GACHA_NOT_SUPPORT);
+    rsp.NBLOJLDLBEB.emplace();
+    session.send(cmd::SetGachaDecideItemScRsp, rsp);
+}
+
+}  // namespace
+
+void registerGachaHandlers() {
+    net::on<proto::GetGachaInfoCsReq>(cmd::GetGachaInfoCsReq, onGetGachaInfo);
+    net::on<proto::DoGachaCsReq>(cmd::DoGachaCsReq, onDoGacha);
+    net::on<proto::GetGachaCeilingCsReq>(cmd::GetGachaCeilingCsReq, onGetGachaCeiling);
+    net::on<proto::ExchangeGachaCeilingCsReq>(cmd::ExchangeGachaCeilingCsReq, onExchangeGachaCeiling);
+    net::on<proto::SetGachaDecideItemCsReq>(cmd::SetGachaDecideItemCsReq, onSetGachaDecideItem);
+}
+
+}  // namespace game

src/game/handlers.h

@@ -23,6 +23,7 @@ void registerTalkHandlers();
 void registerChallengeHandlers();
 void registerTierceHandlers();
 void registerPeakHandlers();
+void registerGachaHandlers();
 void registerModuleHandlers();
 void registerMiscHandlers();
 

src/game/misc_handlers.cpp

@@ -6,7 +6,6 @@
 
 #include "core/logger.h"
 #include "core/util.h"
-#include "data/excel.h"
 #include "game/handlers.h"
 #include "net/cmd_ids.h"
 #include "net/handler.h"
@@ -77,24 +76,6 @@ void onSyncClientResVersion(net::Session& session, const proto::SyncClientResVer
     session.send(cmd::SyncClientResVersionScRsp, rsp);
 }
 
-// The warp pools. Only the standard pool is offered, and its ceiling as already
-// claimed: nothing can pay a warp out yet.
-void onGetGachaInfo(net::Session& session, const proto::GetGachaInfoCsReq&) {
-    const data::StandardGacha& standard = data::Tables::get().standardGacha();
-    proto::GetGachaInfoScRsp rsp;
-    rsp.retcode = 0;
-    auto& pool = rsp.gacha_info_list.emplace_back();
-    pool.gacha_id = standard.gachaId;
-    auto& ceiling = pool.gacha_ceiling.emplace();
-    ceiling.is_claimed = true;
-    for (uint32_t avatarId : standard.ceilingAvatars) {
-        proto::GachaCeilingAvatar avatar;
-        avatar.avatar_id = avatarId;
-        ceiling.avatar_list.push_back(avatar);
-    }
-    session.send(cmd::GetGachaInfoScRsp, rsp);
-}
-
 // Activities reported as scheduled: module id, panel and window.
 struct ScheduledActivity {
     uint32_t activityId;
@@ -207,7 +188,6 @@ void registerMiscHandlers() {
     for (uint16_t cmdId : kEmptyReplies) net::Handlers::get().addEmpty(cmdId);
     for (const auto& [req, rsp] : kResponseAliases) net::Handlers::get().addAlias(req, rsp);
     net::on<proto::SetClientPausedCsReq>(cmd::SetClientPausedCsReq, onSetClientPaused);
-    net::on<proto::GetGachaInfoCsReq>(cmd::GetGachaInfoCsReq, onGetGachaInfo);
     net::on<proto::GetActivityScheduleConfigCsReq>(cmd::GetActivityScheduleConfigCsReq,
                                                    onGetActivityScheduleConfig);
     net::on<proto::SyncClientResVersionCsReq>(cmd::SyncClientResVersionCsReq,
@@ -226,6 +206,7 @@ void registerAllHandlers() {
     registerChallengeHandlers();
     registerTierceHandlers();
     registerPeakHandlers();
+    registerGachaHandlers();
     registerModuleHandlers();
     registerMiscHandlers();
     logging::info("game", "{} packet handlers registered, {} answered empty",

src/game/player.h

@@ -7,6 +7,7 @@
 #include <string>
 #include <vector>
 
+#include "game/gacha.h"
 #include "game/lineup.h"
 #include "game/roster.h"
 #include "game/scene.h"
@@ -168,6 +169,8 @@ public:
     const std::map<uint32_t, TierceProgress>& tierceHistory() const { return tierceHistory_; }
     PeakProgress& peakProgress() { return peakProgress_; }
     const PeakProgress& peakProgress() const { return peakProgress_; }
+    GachaProgress& gacha() { return gacha_; }
+    const GachaProgress& gacha() const { return gacha_; }
 
     uint32_t mainCharacter() const { return mainCharacter_; }
     void setMainCharacter(uint32_t value) { mainCharacter_ = value; }
@@ -209,6 +212,7 @@ private:
     PeakProgress peakProgress_;
     TierceRun tierce_;
     std::map<uint32_t, TierceProgress> tierceHistory_;
+    GachaProgress gacha_;
 
     uint32_t mainCharacter_ = 8008;
     uint32_t marchType_ = 1224;

src/game/player_store.cpp

@@ -171,6 +171,20 @@ bool loadPlayerState(Player& player) {
             }
         }
     }
+
+    if (auto gacha = j.find("gacha"); gacha != j.end() && gacha->is_object()) {
+        auto readPity = [&gacha](const char* key, GachaPity& pity) {
+            auto it = gacha->find(key);
+            if (it == gacha->end() || !it->is_object()) return;
+            pity.sinceFive = u32(*it, "since_five", 0);
+            pity.sinceFour = u32(*it, "since_four", 0);
+            pity.guaranteed = boolOr(*it, "guaranteed", false);
+            pity.total = u32(*it, "total", 0);
+        };
+        readPity("standard", player.gacha().standard);
+        readPity("character", player.gacha().character);
+        readPity("lightcone", player.gacha().lightcone);
+    }
     return true;
 }
 
@@ -244,6 +258,17 @@ bool savePlayerState(const Player& player) {
     }
     j["tierce"] = tierce;
 
+    auto pity = [](const GachaPity& p) {
+        return json{{"since_five", p.sinceFive},
+                    {"since_four", p.sinceFour},
+                    {"guaranteed", p.guaranteed},
+                    {"total", p.total}};
+    };
+    const GachaProgress& gacha = player.gacha();
+    j["gacha"] = {{"standard", pity(gacha.standard)},
+                  {"character", pity(gacha.character)},
+                  {"lightcone", pity(gacha.lightcone)}};
+
     const std::string& path = core::Config::get().paths.playerFile;
     if (!util::writeFile(path, j.dump(2))) {
         logging::warn("player", "could not write {}", path);

tests/test_flow.cpp

@@ -982,6 +982,85 @@ void runFlowTests() {
         }
     }
 
+    // Warp: results only, and every refusal still answers.
+    std::vector<core::WarpBanner> configuredPools = core::Config::get().gameplay.limitedWarpPools;
+    core::Config::get().gameplay.limitedWarpPools.clear();
+    client.sendEmpty(cmd::GetGachaInfoCsReq);
+    check(client.await(cmd::GetGachaInfoScRsp, packet), "warp pools answered");
+    proto::GetGachaInfoScRsp standardInfo;
+    check(parseBody(packet, standardInfo) && standardInfo.gacha_info_list.size() == 1 &&
+              standardInfo.gacha_info_list[0].gacha_id == 1001,
+          "only the standard pool by default");
+
+    core::Config::get().gameplay.limitedWarpPools = {{2002, 0}, {3002, 0}};
+    client.sendEmpty(cmd::GetGachaInfoCsReq);
+    check(client.await(cmd::GetGachaInfoScRsp, packet), "and again with limited pools configured");
+    proto::GetGachaInfoScRsp gachaInfo;
+    check(parseBody(packet, gachaInfo), "the pools parse");
+    check(gachaInfo.gacha_info_list.size() == 3, "the standard pool and the two configured ones");
+    check(!gachaInfo.gacha_info_list.empty() && gachaInfo.gacha_info_list[0].gacha_ceiling.has() &&
+              gachaInfo.gacha_info_list[0].gacha_ceiling->avatar_list.size() == 7,
+          "the standard pool carries its ceiling");
+    uint32_t limitedId = 0;
+    if (gachaInfo.gacha_info_list.size() > 1) {
+        limitedId = gachaInfo.gacha_info_list[1].gacha_id;
+        check(gachaInfo.gacha_info_list[1].prize_item_list.size() == 1,
+              "a limited pool names its featured 5*");
+    }
+
+    proto::DoGachaCsReq tenPull;
+    tenPull.gacha_id = limitedId;
+    tenPull.gacha_num = 10;
+    tenPull.gacha_random = gachaInfo.gacha_random;
+    client.send(cmd::DoGachaCsReq, tenPull);
+    check(client.await(cmd::DoGachaScRsp, packet), "a ten pull answers");
+    proto::DoGachaScRsp tenRsp;
+    check(parseBody(packet, tenRsp) && tenRsp.retcode == 0, "and succeeds");
+    check(tenRsp.gacha_id == limitedId && tenRsp.gacha_num == 10 &&
+              tenRsp.gacha_item_list.size() == 10,
+          "with ten results");
+    bool cardsWhole = !tenRsp.gacha_item_list.empty();
+    for (const proto::GachaItem& card : tenRsp.gacha_item_list) {
+        cardsWhole &= card.gacha_item.has() && card.gacha_item->item_id != 0 &&
+                      card.transfer_item_list.has() && card.token_item.has();
+    }
+    check(cardsWhole, "every card is filled in");
+
+    proto::DoGachaCsReq oddPull = tenPull;
+    oddPull.gacha_num = 5;
+    client.send(cmd::DoGachaCsReq, oddPull);
+    proto::DoGachaScRsp oddRsp;
+    check(client.await(cmd::DoGachaScRsp, packet) && parseBody(packet, oddRsp) &&
+              oddRsp.retcode == static_cast<uint32_t>(proto::Retcode::RET_GACHA_NUM_INVALID) &&
+              oddRsp.gacha_item_list.empty(),
+          "a five pull is refused");
+
+    proto::DoGachaCsReq oldPool;
+    oldPool.gacha_id = 2138;
+    oldPool.gacha_num = 1;
+    client.send(cmd::DoGachaCsReq, oldPool);
+    proto::DoGachaScRsp oldRsp;
+    check(client.await(cmd::DoGachaScRsp, packet) && parseBody(packet, oldRsp) &&
+              oldRsp.retcode == static_cast<uint32_t>(proto::Retcode::RET_GACHA_ID_NOT_EXIST),
+          "a pool that is not offered is refused");
+
+    proto::GetGachaCeilingCsReq ceilingReq;
+    ceilingReq.DDMCNOJFGON = 1;
+    client.send(cmd::GetGachaCeilingCsReq, ceilingReq);
+    proto::GetGachaCeilingScRsp ceilingRsp;
+    check(client.await(cmd::GetGachaCeilingScRsp, packet) && parseBody(packet, ceilingRsp) &&
+              ceilingRsp.gacha_ceiling.has() && ceilingRsp.gacha_ceiling->is_claimed,
+          "the ceiling answers, claimed");
+
+    proto::SetGachaDecideItemCsReq decideReq;
+    decideReq.gacha_id = limitedId;
+    client.send(cmd::SetGachaDecideItemCsReq, decideReq);
+    proto::SetGachaDecideItemScRsp decideRsp;
+    check(client.await(cmd::SetGachaDecideItemScRsp, packet) && parseBody(packet, decideRsp) &&
+              decideRsp.retcode != 0 && decideRsp.NBLOJLDLBEB.has(),
+          "a custom 50/50 pool is refused with a body");
+    core::Config::get().gameplay.limitedWarpPools = configuredPools;
+
     // An unimplemented request still has to complete, or the client hangs on it. This
     // one has no handler at all, so it exercises the name-derived fallback.
     client.sendEmpty(cmd::GetStarFightDataCsReq);

tests/test_game.cpp

@@ -2,6 +2,8 @@
 // present; the data-driven checks are skipped (and reported) when they are not.
 #include <algorithm>
 #include <cstdio>
+#include <map>
+#include <optional>
 #include <string>
 #include <vector>
 
@@ -13,8 +15,10 @@
 #include "data/scene_res.h"
 #include "game/battle.h"
 #include "game/challenge.h"
+#include "game/gacha.h"
 #include "game/lineup.h"
 #include "game/player.h"
+#include "game/player_store.h"
 #include "game/roster.h"
 #include "game/scene.h"
 #include "game/srtools.h"
@@ -186,6 +190,220 @@ void testTables() {
     check(tables.plane(10000) != nullptr, "plane 10000 is loaded");
 }
 
+bool contains(const std::vector<uint32_t>& ids, uint32_t id) {
+    return std::find(ids.begin(), ids.end(), id) != ids.end();
+}
+
+uint32_t tokenCount(const proto::GachaItem& result, uint32_t itemId) {
+    uint32_t total = 0;
+    if (!result.token_item.has()) return 0;
+    for (const proto::Item& item : result.token_item->item_list) {
+        if (item.item_id == itemId) total += item.num;
+    }
+    return total;
+}
+
+void testGacha() {
+    const data::Tables& tables = data::Tables::get();
+    if (!tables.loaded()) {
+        std::printf("SKIP gacha (no data source configured)\n");
+        return;
+    }
+
+    check(tables.avatar(1001) != nullptr && tables.avatar(1001)->rarity == 4, "March is a 4*");
+    check(tables.avatar(1003) != nullptr && tables.avatar(1003)->rarity == 5, "Himeko is a 5*");
+    check(tables.lightcone(23000) != nullptr && tables.lightcone(23000)->rarity == 5,
+          "light cone rarity is read");
+    check(tables.lightcone(20000) != nullptr && tables.lightcone(20000)->rarity == 3,
+          "down to the 3* ones");
+    check(tables.battlePassReward(21028) && !tables.battlePassReward(21000),
+          "battle pass light cones are known");
+
+    // The beta client's own table has six pools, and it throws on any other.
+    check(tables.gachaPools().size() == 5, "the client's pools, less the beginner one");
+    std::vector<data::GachaPool> standardOnly = game::offeredGachaPools(tables, {});
+    check(standardOnly.size() == 1 && standardOnly[0].id == 1001,
+          "only the standard pool unless limited ones are configured");
+    const std::vector<core::WarpBanner> limited{{2002, 0}, {3002, 0}, {2002, 0},
+                                                {2138, 0}, {1001, 0}, {4001, 0}};
+    std::vector<data::GachaPool> offered = game::offeredGachaPools(tables, limited);
+    check(offered.size() == 3, "each configured pool once, if the table has it");
+    check(!offered.empty() && offered[0].id == 1001, "standard first");
+    std::optional<data::GachaPool> character = game::offeredGachaPool(tables, limited, 2002);
+    check(character && character->type == data::GachaType::AvatarUp &&
+              character->featured == 1204 && character->upChance == 50,
+          "2002 features 1204 at 50%");
+    std::optional<data::GachaPool> lightcone = game::offeredGachaPool(tables, limited, 3002);
+    check(lightcone && lightcone->type == data::GachaType::WeaponUp &&
+              lightcone->featured == 23010 && lightcone->upChance == 75,
+          "3002 features 23010 at 75%");
+    check(!game::offeredGachaPool(tables, limited, 2138), "a pool the client lacks is not offered");
+    check(!game::offeredGachaPool(tables, limited, 4001), "nor the beginner pool");
+    check(!game::offeredGachaPool(tables, {}, 2002), "nor an unconfigured one");
+
+    game::GachaItemPools items = game::gachaItemPools(tables);
+    check(items.complete(), "every rarity has something to draw");
+    check(items.fiveStarAvatars.size() == 7 && items.fiveStarLightcones.size() == 7,
+          "seven standard 5* of each");
+    check(contains(items.fourStarAvatars, 1001) && !contains(items.fourStarAvatars, 1224),
+          "4* characters without March's second form");
+    check(!contains(items.fourStarAvatars, 1003), "and without 5*s");
+    check(contains(items.fourStarLightcones, 21000) && !contains(items.fourStarLightcones, 21028) &&
+              !contains(items.fourStarLightcones, 22000),
+          "4* light cones without pass or event ones");
+    check(items.threeStarLightcones.size() == 25, "all 25 3* light cones");
+    if (!items.complete() || !character || !lightcone || offered.empty()) return;
+
+    auto unlucky = [] { return 0.999999; };
+    auto lucky = [] { return 0.0; };
+
+    game::GachaPity pity;
+    std::vector<game::GachaPull> pulls = game::pullGacha(offered[0], items, pity, 91, unlucky);
+    bool early = false;
+    for (size_t i = 0; i < 89; ++i) early |= pulls[i].rarity == 5;
+    check(!early && pulls[89].rarity == 5, "the 90th standard pull is a 5*");
+    check(pulls[9].rarity == 4 && pulls[19].rarity == 4 && pulls[8].rarity == 3,
+          "every tenth pull is a 4*");
+    check(pulls[90].rarity == 4, "a 5* pushes the due 4* to the next pull");
+    check(pity.sinceFive == 1 && pity.sinceFour == 0 && pity.total == 91, "pity is counted");
+
+    game::GachaPity lcPity;
+    pulls = game::pullGacha(*lightcone, items, lcPity, 80, unlucky);
+    early = false;
+    for (size_t i = 0; i < 79; ++i) early |= pulls[i].rarity == 5;
+    check(!early && pulls[79].rarity == 5, "the 80th light cone pull is a 5*");
+
+    game::GachaPity charPity;
+    pulls = game::pullGacha(*character, items, charPity, 90, unlucky);
+    check(pulls[89].rarity == 5 && pulls[89].avatar && pulls[89].itemId != 1204 &&
+              contains(items.fiveStarAvatars, pulls[89].itemId),
+          "losing the 50/50 gives a standard 5*");
+    check(charPity.guaranteed, "and guarantees the next one");
+    pulls = game::pullGacha(*character, items, charPity, 90, unlucky);
+    check(pulls[89].itemId == 1204 && !charPity.guaranteed, "which is the featured 5*");
+
+    game::GachaPity luckyPity;
+    pulls = game::pullGacha(*character, items, luckyPity, 10, lucky);
+    bool allFeatured = pulls.size() == 10;
+    for (const game::GachaPull& pull : pulls) allFeatured &= pull.rarity == 5 && pull.itemId == 1204;
+    check(allFeatured, "winning every roll gives the featured 5* every time");
+    pulls = game::pullGacha(offered[0], items, luckyPity, 1, lucky);
+    check(pulls[0].rarity == 5 && pulls[0].itemId == items.fiveStarAvatars[0], "standard draws too");
+
+    game::SrToolsData roster;
+    game::Avatar maxed;
+    maxed.avatarId = 1003;
+    maxed.rank = 6;
+    roster.avatars[1003] = maxed;
+    game::Avatar fresh;
+    fresh.avatarId = 1004;
+    roster.avatars[1004] = fresh;
+
+    proto::GachaItem result = game::gachaResult({20000, 3, false}, roster);
+    check(result.gacha_item.has() && result.gacha_item->item_id == 20000 && result.gacha_item->num == 1,
+          "the card names the item");
+    check(result.transfer_item_list.has() && result.token_item.has(), "both lists are present");
+    check(tokenCount(result, 251) == 20 && !result.is_new, "a 3* light cone is 20 embers");
+    check(tokenCount(game::gachaResult({23000, 5, false}, roster), 252) == 40, "a 5* one 40 starlight");
+    check(tokenCount(game::gachaResult({21000, 4, false}, roster), 252) == 8, "a 4* one 8");
+    result = game::gachaResult({1003, 5, true}, roster);
+    check(tokenCount(result, 252) == 100 && result.transfer_item_list->item_list.empty(),
+          "a 5* past E6 is 100 starlight");
+    result = game::gachaResult({1004, 5, true}, roster);
+    check(tokenCount(result, 252) == 40 && result.transfer_item_list->item_list.size() == 1 &&
+              result.transfer_item_list->item_list[0].item_id == 11004,
+          "below E6 it is 40 and an eidolon");
+    result = game::gachaResult({1101, 5, true}, roster);
+    check(result.is_new && tokenCount(result, 252) == 0, "a character not in the build is new");
+
+    // A configured featured 5* replaces the pool's own, if it is of the pool's kind.
+    std::optional<data::GachaPool> pearl = game::offeredGachaPool(tables, {{2001, 1503}}, 2001);
+    check(pearl && pearl->type == data::GachaType::AvatarUp && pearl->featured == 1503 &&
+              pearl->upChance == 50,
+          "2001 can feature Pearl at 50%");
+    std::optional<data::GachaPool> fourStar = game::offeredGachaPool(tables, {{2001, 1001}}, 2001);
+    check(fourStar && fourStar->featured == 1102, "a 4* cannot be featured");
+    std::optional<data::GachaPool> wrongKind = game::offeredGachaPool(tables, {{3001, 1503}}, 3001);
+    check(wrongKind && wrongKind->featured == 23001, "nor a character on a light cone pool");
+    if (pearl) {
+        game::GachaPity pearlPity;
+        pulls = game::pullGacha(*pearl, items, pearlPity, 10, lucky);
+        bool allPearl = pulls.size() == 10;
+        for (const game::GachaPull& pull : pulls) {
+            allPearl &= pull.rarity == 5 && pull.avatar && pull.itemId == 1503;
+        }
+        check(allPearl, "winning the 50/50 draws her");
+        pulls = game::pullGacha(*pearl, items, pearlPity, 90, unlucky);
+        check(pulls[89].rarity == 5 && pulls[89].avatar && pulls[89].itemId != 1503 &&
+                  contains(items.fiveStarAvatars, pulls[89].itemId) && pearlPity.guaranteed,
+              "losing it gives a standard 5* character and the guarantee");
+    }
+
+    // Stellar Warp standing in for Pearl's banner.
+    data::GachaPool standardPearl = game::effectiveGachaPool(offered[0], tables, 1503);
+    check(standardPearl.id == 1001 && standardPearl.type == data::GachaType::AvatarUp &&
+              standardPearl.featured == 1503 && standardPearl.upChance == 50,
+          "Stellar Warp can feature Pearl at 50%");
+    check(game::effectiveGachaPool(offered[0], tables, 0).type == data::GachaType::Normal,
+          "0 keeps it the standard pool");
+    check(game::effectiveGachaPool(offered[0], tables, 1001).type == data::GachaType::Normal,
+          "a 4* cannot be featured on it");
+    check(game::effectiveGachaPool(*character, tables, 1503).featured == 1204,
+          "a limited pool is left alone");
+    game::GachaPity standardPearlPity;
+    pulls = game::pullGacha(standardPearl, items, standardPearlPity, 10, lucky);
+    bool allStandardPearl = pulls.size() == 10;
+    for (const game::GachaPull& pull : pulls) {
+        allStandardPearl &= pull.rarity == 5 && pull.avatar && pull.itemId == 1503;
+    }
+    check(allStandardPearl, "and it draws her on a won 50/50");
+
+    // The real dice, 200000 pulls: no two lost 50/50s in a row, and the losses spread evenly.
+    game::GachaPity simPity;
+    std::map<uint32_t, uint32_t> lostTo;
+    uint32_t fiveStars = 0, owed = 0, lost = 0;
+    bool lostTwice = false, lastLost = false;
+    for (int batch = 0; batch < 20000; ++batch) {
+        for (const game::GachaPull& pull :
+             game::pullGacha(standardPearl, items, simPity, 10, game::gachaRoll)) {
+            if (pull.rarity != 5) continue;
+            ++fiveStars;
+            if (pull.featured) {
+                if (pull.guaranteed) ++owed;
+                lastLost = false;
+                continue;
+            }
+            ++lost;
+            ++lostTo[pull.itemId];
+            lostTwice |= lastLost;
+            lastLost = true;
+        }
+    }
+    check(!lostTwice, "a lost 50/50 is never followed by another");
+    check(owed == lost || owed + 1 == lost, "every loss is paid back by the next 5*");
+    double rate = static_cast<double>(fiveStars) / 200000.0;
+    check(rate > 0.013 && rate < 0.019, "about 1.6% of pulls are 5*");
+    bool even = lostTo.size() == items.fiveStarAvatars.size();
+    for (const auto& [id, count] : lostTo) even &= count > lost * 8 / 100 && count < lost * 20 / 100;
+    check(even, "a lost 50/50 lands evenly on the seven standard 5*s");
+    std::printf("      warp simulation: %u 5* (%.2f%%), %u lost, spread:", fiveStars, rate * 100, lost);
+    for (const auto& [id, count] : lostTo) std::printf(" %u=%u", id, count);
+    std::printf("\n");
+
+    // Pity outlives a restart.
+    std::string realPath = core::Config::get().paths.playerFile;
+    core::Config::get().paths.playerFile = "build/test-gacha-player.json";
+    game::Player saved(1);
+    saved.gacha().character = {12, 3, true, 345};
+    check(game::savePlayerState(saved), "pity saves");
+    game::Player loaded(1);
+    check(game::loadPlayerState(loaded), "and loads");
+    const game::GachaPity& back = loaded.gacha().character;
+    check(back.sinceFive == 12 && back.sinceFour == 3 && back.guaranteed && back.total == 345,
+          "unchanged");
+    core::Config::get().paths.playerFile = realPath;
+}
+
 void testChallengeHistory() {
     const data::Tables& tables = data::Tables::get();
     if (!tables.loaded()) return;
@@ -816,6 +1034,7 @@ void runGameTests() {
     testItemUniqueIds();
     testElementBuffs();
     testTables();
+    testGacha();
     testChallengeHistory();
     testSceneRes();
     testRosterProtos();