Implement gacha banners (not newbie)

src/main/java/emu/nebula/data/GameData.java

@@ -50,6 +50,9 @@ public class GameData {
     @Getter private static DataTable<CharGemInstanceDef> CharGemInstanceDataTable = new DataTable<>();
     @Getter private static DataTable<WeekBossLevelDef> WeekBossLevelDataTable = new DataTable<>();
     
+    @Getter private static DataTable<GachaDef> GachaDataTable = new DataTable<>();
+    @Getter private static DataTable<GachaStorageDef> GachaStorageDataTable = new DataTable<>();
+    
     @Getter private static DataTable<WorldClassDef> WorldClassDataTable = new DataTable<>();
     @Getter private static DataTable<GuideGroupDef> GuideGroupDataTable = new DataTable<>();
     @Getter private static DataTable<HandbookDef> HandbookDataTable = new DataTable<>();

src/main/java/emu/nebula/data/resources/GachaDef.java

@@ -0,0 +1,113 @@
+package emu.nebula.data.resources;
+
+import emu.nebula.data.BaseDef;
+import emu.nebula.data.GameData;
+import emu.nebula.data.ResourceType;
+import emu.nebula.util.WeightedList;
+import lombok.Getter;
+
+@Getter
+@ResourceType(name = "Gacha.json")
+public class GachaDef extends BaseDef {
+    private int Id;
+    private int StorageId;
+    private int GachaType;
+    
+    private int GuaranteeTimes;
+    private int GuaranteeTid;
+    private int GuaranteeQty;
+    
+    // Packages
+    private int ATypePkg;
+    private int BTypePkg;
+    private int CTypePkg;
+    
+    private int ATypeUpPkg;
+    private int BTypeUpPkg;
+    private int CTypeUpPkg;
+    
+    private int BGuaranteePkg;
+    
+    private transient WeightedList<GachaPackage> packageA;
+    private transient WeightedList<GachaPackage> packageB;
+    private transient WeightedList<GachaPackage> packageC;
+    
+    @Override
+    public int getId() {
+        return Id;
+    }
+    
+    public GachaStorageDef getStorageData() {
+        return GameData.getGachaStorageDataTable().get(this.getStorageId());
+    }
+    
+    @Override
+    public void onLoad() {
+        // Get storage
+        var storage = this.getStorageData();
+        
+        // Package A
+        this.packageA = new WeightedList<GachaPackage>();
+        
+        if (this.ATypePkg > 0) {
+            packageA.add(
+                    10000 - storage.getATypeUpProb(), 
+                    new GachaPackage(GachaPackageType.A, this.ATypePkg)
+            );
+        } if (this.ATypeUpPkg > 0) {
+            packageA.add(
+                    storage.getATypeUpProb(),
+                    new GachaPackage(GachaPackageType.A_UP, this.ATypeUpPkg)
+            );
+        }
+        
+        // Package B
+        this.packageB = new WeightedList<GachaPackage>();
+        
+        if (this.BTypePkg > 0) {
+            packageB.add(
+                    10000 - storage.getBTypeUpProb(), 
+                    new GachaPackage(GachaPackageType.B, this.BTypePkg)
+            );
+        } else if (this.BGuaranteePkg > 0) {
+            packageB.add(
+                    10000 - storage.getBTypeUpProb(),
+                    new GachaPackage(GachaPackageType.B, this.BGuaranteePkg)
+            );
+        } if (this.BTypeUpPkg > 0) {
+            packageB.add(
+                    storage.getBTypeUpProb(),
+                    new GachaPackage(GachaPackageType.B_UP, this.BTypeUpPkg)
+            );
+        }
+        
+        // Package C
+        this.packageC = new WeightedList<GachaPackage>();
+        
+        if (this.CTypePkg > 0) {
+            packageC.add(
+                    10000,
+                    new GachaPackage(GachaPackageType.C, this.CTypePkg)
+            );
+        }
+    }
+    
+    @Getter
+    public static class GachaPackage {
+        private GachaPackageType type;
+        private int id;
+        
+        public GachaPackage(GachaPackageType type, int id) {
+            this.type = type;
+            this.id = id;
+        }
+    }
+    
+    public enum GachaPackageType {
+        A,
+        A_UP,
+        B,
+        B_UP,
+        C;
+    }
+}

src/main/java/emu/nebula/data/resources/GachaPkgDef.java

@@ -0,0 +1,35 @@
+package emu.nebula.data.resources;
+
+import emu.nebula.data.BaseDef;
+import emu.nebula.data.ResourceType;
+import emu.nebula.data.ResourceType.LoadPriority;
+import emu.nebula.util.WeightedList;
+import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
+import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
+import lombok.Getter;
+
+@Getter
+@ResourceType(name = "GachaPkg.json", loadPriority = LoadPriority.LOW)
+public class GachaPkgDef extends BaseDef {
+    private int PkgId;
+    private int GoodsId;
+    private int Weight;
+    
+    private static final Int2ObjectMap<WeightedList<Integer>> packages = new Int2ObjectOpenHashMap<>();
+    
+    @Override @Deprecated
+    public int getId() {
+        return PkgId;
+    }
+    
+    public static WeightedList<Integer> getPackageById(int packageId) {
+        return packages.get(packageId);
+    }
+    
+    @Override
+    public void onLoad() {
+        // Add to package
+        var list = packages.computeIfAbsent(this.getPkgId(), i -> new WeightedList<Integer>());
+        list.add(this.getWeight(), this.getGoodsId());
+    }
+}

src/main/java/emu/nebula/data/resources/GachaStorageDef.java

@@ -0,0 +1,26 @@
+package emu.nebula.data.resources;
+
+import emu.nebula.data.BaseDef;
+import emu.nebula.data.ResourceType;
+import emu.nebula.data.ResourceType.LoadPriority;
+import lombok.Getter;
+
+@Getter
+@ResourceType(name = "GachaStorage.json", loadPriority = LoadPriority.HIGH)
+public class GachaStorageDef extends BaseDef {
+    private int Id;
+    
+    private int DefaultId;
+    private int DefaultQty;
+    private int CostId;
+    private int CostQty;
+    
+    private int ATypeUpProb;
+    private int BTypeUpProb;
+    private int BTypeGuaranteeProb;
+    
+    @Override
+    public int getId() {
+        return Id;
+    }
+}

src/main/java/emu/nebula/game/GameContext.java

@@ -4,6 +4,7 @@ import java.util.Timer;
 import java.util.TimerTask;
 import java.util.concurrent.TimeUnit;
 
+import emu.nebula.game.gacha.GachaModule;
 import emu.nebula.game.player.PlayerModule;
 import emu.nebula.net.GameSession;
 import it.unimi.dsi.fastutil.objects.Object2ObjectMap;
@@ -16,13 +17,16 @@ public class GameContext {
     
     // Modules
     private final PlayerModule playerModule;
+    private final GachaModule gachaModule;
     
     // Cleanup thread
     private final Timer cleanupTimer;
     
     public GameContext() {
         this.sessions = new Object2ObjectOpenHashMap<>();
+        
         this.playerModule = new PlayerModule(this);
+        this.gachaModule = new GachaModule(this);
         
         this.cleanupTimer = new Timer();
         this.cleanupTimer.scheduleAtFixedRate(new CleanupTask(this), 0, TimeUnit.SECONDS.toMillis(60));

src/main/java/emu/nebula/game/character/Character.java

@@ -141,7 +141,7 @@ public class Character implements GameDatabaseObject {
         int exp = 0;
         
         // Check if item is an exp item
-        for (var entry : params.getEntrySet()) {
+        for (var entry : params.entries()) {
             var data = GameData.getCharItemExpDataTable().get(entry.getIntKey());
             if (data == null) return null;
             

src/main/java/emu/nebula/game/character/GameDisc.java

@@ -130,7 +130,7 @@ public class GameDisc implements GameDatabaseObject {
         int exp = 0;
         
         // Check if item is an exp item
-        for (var entry : params.getEntrySet()) {
+        for (var entry : params.entries()) {
             var data = GameData.getDiscItemExpDataTable().get(entry.getIntKey());
             if (data == null) return null;
             

src/main/java/emu/nebula/game/gacha/GachaBannerInfo.java

@@ -0,0 +1,99 @@
+package emu.nebula.game.gacha;
+
+import org.bson.types.ObjectId;
+
+import dev.morphia.annotations.Entity;
+import dev.morphia.annotations.Id;
+import emu.nebula.data.resources.GachaDef;
+import emu.nebula.data.resources.GachaDef.GachaPackage;
+import emu.nebula.data.resources.GachaPkgDef;
+import emu.nebula.database.GameDatabaseObject;
+import emu.nebula.game.player.Player;
+import emu.nebula.util.Utils;
+import lombok.Getter;
+
+@Getter
+@Entity(value = "banner_info", useDiscriminator = false)
+public class GachaBannerInfo implements GameDatabaseObject {
+    @Id
+    private ObjectId id;
+    
+    private int bannerId;
+    private int playerUid;
+    
+    private int total;
+    private int missTimesA;
+    private int missTimesUpA;
+    private int missTimesB;
+    private boolean usedGuarantee;
+    
+    @Deprecated //Morphia only
+    public GachaBannerInfo() {
+        
+    }
+    
+    public GachaBannerInfo(Player player, GachaDef data) {
+        this.playerUid = player.getUid();
+        this.bannerId = data.getId();
+    }
+    
+    public int doPull(GachaDef data) {
+        // Pull chances
+        int chanceA = 20;   // 2%
+        int chanceB = 100;  // 8%
+        
+        // 4 star pity
+        if (this.missTimesB >= 9) {
+            chanceB = 1000;
+        }
+        
+        // 5 star pity
+        if (this.missTimesA >= 159) {
+            chanceA = 1000;
+            chanceB = 0;
+        }
+        
+        // Add miss times
+        this.missTimesB++;
+        this.missTimesA++;
+        //this.missTimesUpA++;
+        
+        // Get random
+        int random = Utils.randomRange(1, 1000);
+        GachaPackage gp = null;
+        
+        if (random <= chanceA) {
+            // Reset pity
+            this.missTimesA = 0;
+            
+            // Get A package
+            gp = data.getPackageA().next();
+        } else if (random <= chanceB) {
+            // Add miss times
+            this.missTimesB = 0;
+            
+            // Get B package
+            gp = data.getPackageB().next();
+        } else {
+            // Get C package
+            gp = data.getPackageC().next();
+        }
+        
+        // Sanity check
+        if (gp == null) {
+            return 0;
+        }
+        
+        // Get package
+        var pkg = GachaPkgDef.getPackageById(gp.getId());
+        if (pkg == null) {
+            return 0;
+        }
+        
+        // Add total pulls
+        this.total++;
+        
+        // Get random id
+        return pkg.next();
+    }
+}

src/main/java/emu/nebula/game/gacha/GachaManager.java

@@ -0,0 +1,46 @@
+package emu.nebula.game.gacha;
+
+import java.util.Collection;
+
+import emu.nebula.Nebula;
+import emu.nebula.data.resources.GachaDef;
+import emu.nebula.game.player.Player;
+import emu.nebula.game.player.PlayerManager;
+
+import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
+import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
+
+public class GachaManager extends PlayerManager {
+    private final Int2ObjectMap<GachaBannerInfo> bannerInfos;
+    private boolean loaded;
+    
+    public GachaManager(Player player) {
+        super(player);
+        this.bannerInfos = new Int2ObjectOpenHashMap<>();
+    }
+    
+    public synchronized Collection<GachaBannerInfo> getBannerInfos() {
+        return this.bannerInfos.values();
+    }
+    
+    public synchronized GachaBannerInfo getBannerInfo(GachaDef gachaData) {
+        if (!this.loaded) {
+            this.loadFromDatabase();
+        }
+        
+        return this.bannerInfos.computeIfAbsent(
+                gachaData.getId(), 
+                i -> new GachaBannerInfo(this.getPlayer(), gachaData)
+        );
+    }
+    
+    private void loadFromDatabase() {
+        var db = Nebula.getGameDatabase();
+        
+        db.getObjects(GachaBannerInfo.class, "playerUid", getPlayerUid()).forEach(bannerInfo -> {
+            this.bannerInfos.put(bannerInfo.getBannerId(), bannerInfo);
+        });
+        
+        this.loaded = true;
+    }
+}

src/main/java/emu/nebula/game/gacha/GachaModule.java

@@ -0,0 +1,166 @@
+package emu.nebula.game.gacha;
+
+import emu.nebula.data.GameData;
+import emu.nebula.game.GameContext;
+import emu.nebula.game.GameContextModule;
+import emu.nebula.game.inventory.ItemAcquireMap;
+import emu.nebula.game.inventory.ItemParamMap;
+import emu.nebula.game.inventory.ItemType;
+import emu.nebula.game.player.Player;
+import emu.nebula.game.player.PlayerChangeInfo;
+import emu.nebula.proto.Public.Transform;
+import it.unimi.dsi.fastutil.ints.IntArrayList;
+
+public class GachaModule extends GameContextModule {
+
+    public GachaModule(GameContext context) {
+        super(context);
+    }
+
+    public GachaResult spin(Player player, int bannerId, int mode) {
+        // Get pull count
+        int amount = mode == 2 ? 10 : 1;
+        
+        // Get banner data
+        var banner = GameData.getGachaDataTable().get(bannerId);
+        if (banner == null) {
+            return null;
+        }
+        
+        var bannerStorage = banner.getStorageData();
+        if (bannerStorage == null) {
+            return null;
+        }
+        
+        // Create change info
+        var change = new PlayerChangeInfo();
+        
+        // Check if we have the materials to gacha TODO
+        int costQty = player.getInventory().getItemCount(bannerStorage.getDefaultId());
+        int costReq = bannerStorage.getDefaultQty() * amount;
+        
+        if (costReq > costQty) {
+            // Not enough materials, check if we can convert
+            int convertQty = player.getInventory().getResourceCount(bannerStorage.getCostId());
+            int convertReq = bannerStorage.getCostQty() * (costReq - costQty);
+            
+            // Check if we can buy pulls
+            if (convertReq > convertQty) {
+                return null;
+            }
+            
+            // Convert to pull currency
+            player.getInventory().removeItem(bannerStorage.getCostId(), convertReq, change);
+        }
+        
+        // Consume pull currency
+        player.getInventory().removeItem(bannerStorage.getDefaultId(), Math.min(costReq, costQty), change);
+        
+        // Get gacha banner info
+        var info = player.getGachaManager().getBannerInfo(banner);
+        
+        // Do gacha
+        var results = new IntArrayList();
+        
+        for (int i = 0; i < amount; i++) {
+            int id = info.doPull(banner);
+            if (id <= 0) continue;
+            
+            results.add(id);
+        }
+        
+        // Setup variables
+        var acquireItems = new ItemAcquireMap(player, results);
+        var transformItemsSrc = new ItemParamMap();
+        var transformItemsDst = new ItemParamMap();
+        var bonusItems = new ItemParamMap();
+        
+        // Add for player
+        for (var entry : acquireItems.getItems().int2ObjectEntrySet()) {
+            // Get ids and aquire params
+            int id = entry.getIntKey();
+            var acquire = entry.getValue();
+            
+            // Add to player
+            if (acquire.getType() == ItemType.Char) {
+                // Get add amount
+                int count = acquire.getCount();
+                
+                // Add char to player
+                if (acquire.getBegin() == 0) {
+                    player.getInventory().addItem(id, 1, change);
+                    count--;
+                }
+                
+                // Talent material
+                if (count > 0) {
+                    var characterData = GameData.getCharacterDataTable().get(id);
+                    if (characterData == null) continue;
+                    
+                    transformItemsSrc.add(id, count);
+                    transformItemsDst.add(characterData.getFragmentsId(), characterData.getTransformQty() * count);
+                    transformItemsDst.add(24, 40 * count); // Expert permits
+                }
+            } else if (acquire.getType() == ItemType.Disc) {
+                // Get add amount
+                int begin = acquire.getBegin();
+                int count = acquire.getCount();
+                
+                // Add disc to player
+                if (begin == 0) {
+                    player.getInventory().addItem(id, 1, change);
+                    count--;
+                    begin++;
+                }
+                
+                // Talent material
+                int maxTransformCount = Math.max(6 - begin, 0);
+                int transformCount = Math.min(count, maxTransformCount);
+                int extraCount = count - maxTransformCount;
+                
+                // Transform
+                if (transformCount > 0) {
+                    var discData = GameData.getDiscDataTable().get(id);
+                    if (discData == null) continue;
+                    
+                    // Star material
+                    transformItemsSrc.add(id, transformCount);
+                    transformItemsDst.add(discData.getTransformItemId(), transformCount);
+                } else if (extraCount > 0) {
+                    // Permit
+                    transformItemsSrc.add(id, extraCount);
+                    transformItemsDst.add(23, 100 * extraCount);
+                }
+                
+                // Add Travel permits
+                bonusItems.add(23, 100 * acquire.getCount());
+            } else {
+                // Should never happen
+                bonusItems.add(id, acquire.getCount());
+            }
+            
+            // Add gold discs
+            bonusItems.add(602, 30 * acquire.getCount());
+        }
+        
+        // Add transform items to extra items
+        bonusItems.add(transformItemsDst); // Add transform items
+        
+        // Add extra items
+        player.getInventory().addItems(bonusItems, change);
+        
+        // Add acquire/transform protos
+        change.add(acquireItems.toProto());
+        
+        var transform = Transform.newInstance();
+        transformItemsSrc.toItemTemplateStream().forEach(transform::addSrc);
+        transformItemsDst.toItemTemplateStream().forEach(transform::addDst);
+        change.add(transform);
+        
+        // Save banner info to database
+        info.save();
+        
+        // Complete
+        return new GachaResult(info, change, results);
+    }
+}

src/main/java/emu/nebula/game/gacha/GachaResult.java

@@ -0,0 +1,19 @@
+package emu.nebula.game.gacha;
+
+import emu.nebula.game.player.PlayerChangeInfo;
+import it.unimi.dsi.fastutil.ints.IntList;
+import lombok.Getter;
+
+@Getter
+public class GachaResult {
+    private GachaBannerInfo info;
+    private PlayerChangeInfo change;
+    private IntList cards;
+    
+    public GachaResult(GachaBannerInfo info, PlayerChangeInfo change, IntList cards) {
+        this.info = info;
+        this.change = change;
+        this.cards = cards;
+    }
+    
+}

src/main/java/emu/nebula/game/inventory/Inventory.java

@@ -207,7 +207,7 @@ public class Inventory extends PlayerManager {
         }
         
         // Add items
-        for (var param : params.getEntrySet()) {
+        for (var param : params.entries()) {
             this.addItem(param.getIntKey(), param.getIntValue(), changes);
         }
         
@@ -242,7 +242,7 @@ public class Inventory extends PlayerManager {
         }
         
         // Remove items
-        for (var param : params.getEntrySet()) {
+        for (var param : params.entries()) {
             this.removeItem(param.getIntKey(), param.getIntValue(), changes);
         }
         
@@ -293,7 +293,7 @@ public class Inventory extends PlayerManager {
     public synchronized boolean verifyItems(ItemParamMap params) {
         boolean hasItems = true;
         
-        for (var param : params.getEntrySet()) {
+        for (var param : params.entries()) {
             hasItems = this.verifyItem(param.getIntKey(), param.getIntValue());
             
             if (!hasItems) {

src/main/java/emu/nebula/game/inventory/ItemAcquireMap.java

@@ -0,0 +1,92 @@
+package emu.nebula.game.inventory;
+
+import emu.nebula.data.GameData;
+import emu.nebula.game.player.Player;
+import emu.nebula.proto.Public.AcqInfo;
+import emu.nebula.proto.Public.Acquire;
+
+import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
+import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
+import it.unimi.dsi.fastutil.ints.IntList;
+
+import lombok.Getter;
+
+@Getter
+public class ItemAcquireMap {
+    private final Int2ObjectMap<ItemAcquireParam> items;
+    
+    public ItemAcquireMap(Player player, IntList list) {
+        this.items = new Int2ObjectOpenHashMap<>();
+        
+        for (int id : list) {
+            // Get item data
+            var data = GameData.getItemDataTable().get(id);
+            if (data == null) {
+                continue;
+            }
+            
+            // Add to acquire map
+            if (!this.getItems().containsKey(id)) {
+                // Get starting count
+                int count = 0;
+                
+                // Check item type
+                if (data.getItemType() == ItemType.Char) {
+                    var character = player.getCharacters().getCharacterById(id);
+                    
+                    if (character != null) {
+                        count = 1;
+                    }
+                } else if (data.getItemType() == ItemType.Disc) {
+                    var disc = player.getCharacters().getDiscById(id);
+                    
+                    if (disc != null) {
+                        count = 1;
+                        count += disc.getStar();
+                        count += player.getInventory().getItemCount(disc.getData().getTransformItemId());
+                    }
+                }
+                
+                var acquireInfo = new ItemAcquireParam(data.getItemType(), count);
+                acquireInfo.add();
+                
+                this.getItems().put(id, acquireInfo);
+            } else {
+                this.getItems().get(id).add();
+            }
+        }
+    }
+    
+    // Proto
+    
+    public Acquire toProto() {
+        var proto = Acquire.newInstance();
+        
+        for (var entry : this.items.int2ObjectEntrySet()) {
+            var a = AcqInfo.newInstance()
+                    .setTid(entry.getIntKey())
+                    .setBegin(entry.getValue().getBegin())
+                    .setCount(entry.getValue().getCount());
+            
+            proto.addList(a);
+        }
+        
+        return proto;
+    }
+    
+    @Getter
+    public static class ItemAcquireParam {
+        private ItemType type;
+        private int begin;
+        private int count;
+
+        public ItemAcquireParam(ItemType type, int i) {
+            this.type = type;
+            this.begin = i;
+        }
+        
+        public void add() {
+            this.count++;
+        }
+    }
+}

src/main/java/emu/nebula/game/inventory/ItemParamMap.java

@@ -7,16 +7,14 @@ import java.util.stream.Stream;
 import emu.nebula.proto.Public.Item;
 import emu.nebula.proto.Public.ItemInfo;
 import emu.nebula.proto.Public.ItemTpl;
-import it.unimi.dsi.fastutil.ints.Int2IntOpenHashMap;
+
+import it.unimi.dsi.fastutil.ints.Int2IntLinkedOpenHashMap;
+
 import us.hebi.quickbuf.RepeatedMessage;
 
-public class ItemParamMap extends Int2IntOpenHashMap {
+public class ItemParamMap extends Int2IntLinkedOpenHashMap {
     private static final long serialVersionUID = -4186524272780523459L;
     
-    public FastEntrySet entries() {
-        return this.int2IntEntrySet();
-    }
-    
     @Override @Deprecated
     public int addTo(int itemId, int count) {
         return this.add(itemId, count);
@@ -55,9 +53,7 @@ public class ItemParamMap extends Int2IntOpenHashMap {
         return params;
     }
     
-    //
-    
-    public FastEntrySet getEntrySet() {
+    public FastEntrySet entries() {
         return this.int2IntEntrySet();
     }
     
@@ -74,13 +70,13 @@ public class ItemParamMap extends Int2IntOpenHashMap {
     }
 
     public Stream<ItemTpl> toItemTemplateStream() {
-        return getEntrySet()
+        return entries()
                 .stream()
                 .map(e -> ItemTpl.newInstance().setTid(e.getIntKey()).setQty(e.getIntValue()));
     }
     
     public Stream<Item> toItemProtoStream() {
-        return getEntrySet()
+        return entries()
                 .stream()
                 .map(e -> Item.newInstance().setTid(e.getIntKey()).setQty(e.getIntValue()));
     }

src/main/java/emu/nebula/game/player/Player.java

@@ -14,6 +14,7 @@ import emu.nebula.database.GameDatabaseObject;
 import emu.nebula.game.account.Account;
 import emu.nebula.game.character.CharacterStorage;
 import emu.nebula.game.formation.FormationManager;
+import emu.nebula.game.gacha.GachaManager;
 import emu.nebula.game.instance.InstanceManager;
 import emu.nebula.game.inventory.Inventory;
 import emu.nebula.game.mail.Mailbox;
@@ -66,6 +67,7 @@ public class Player implements GameDatabaseObject {
     // Managers
     private final transient CharacterStorage characters;
     private final transient Inventory inventory;
+    private transient GachaManager gachaManager;
     
     // Referenced data
     private transient FormationManager formations;
@@ -79,6 +81,7 @@ public class Player implements GameDatabaseObject {
         this.sessions = new HashSet<>();
         this.characters = new CharacterStorage(this);
         this.inventory = new Inventory(this);
+        this.gachaManager = new GachaManager(this);
     }
     
     public Player(Account account, String name, boolean gender) {

src/main/java/emu/nebula/net/NetMsgIdUtils.java

@@ -38,7 +38,6 @@ public class NetMsgIdUtils {
         return msgIdMap.getOrDefault(msgId, "UNKNOWN");
     }
 
-    @SuppressWarnings("unused")
     public static void dumpPacketIds() {
         try (FileWriter writer = new FileWriter("./MsgIds_" + GameConstants.VERSION + ".json")) {
             // Create sorted tree map

src/main/java/emu/nebula/server/handlers/HandlerGachaInformationReq.java

@@ -2,6 +2,7 @@ package emu.nebula.server.handlers;
 
 import emu.nebula.net.NetHandler;
 import emu.nebula.net.NetMsgId;
+import emu.nebula.proto.GachaInformation.GachaInfo;
 import emu.nebula.proto.GachaInformation.GachaInformationResp;
 import emu.nebula.net.HandlerId;
 import emu.nebula.net.GameSession;
@@ -11,10 +12,23 @@ public class HandlerGachaInformationReq extends NetHandler {
 
     @Override
     public byte[] handle(GameSession session, byte[] message) throws Exception {
+        // Build response
         var rsp = GachaInformationResp.newInstance();
         
-        // TODO
+        for (var bannerInfo : session.getPlayer().getGachaManager().getBannerInfos()) {
+            var info = GachaInfo.newInstance()
+                    .setId(bannerInfo.getBannerId())
+                    .setGachaTotalTimes(bannerInfo.getTotal())
+                    .setTotalTimes(bannerInfo.getTotal())
+                    .setAupMissTimes(bannerInfo.getMissTimesA())
+                    .setAMissTimes(bannerInfo.getMissTimesA())
+                    .setReveFirstTenReward(true)
+                    .setRecvGuaranteeReward(bannerInfo.isUsedGuarantee());
             
+            rsp.addInformation(info);
+        }
+        
+        // Encode and send
         return session.encodeMsg(NetMsgId.gacha_information_succeed_ack, rsp);
     }
 

src/main/java/emu/nebula/server/handlers/HandlerGachaNewbieInfoReq.java

@@ -2,7 +2,8 @@ package emu.nebula.server.handlers;
 
 import emu.nebula.net.NetHandler;
 import emu.nebula.net.NetMsgId;
-import emu.nebula.proto.GachaInformation.GachaInformationResp;
+import emu.nebula.proto.GachaNewbieInfoOuterClass.GachaNewbieInfo;
+import emu.nebula.proto.GachaNewbieInfoOuterClass.GachaNewbieInfoResp;
 import emu.nebula.net.HandlerId;
 import emu.nebula.net.GameSession;
 
@@ -11,7 +12,12 @@ public class HandlerGachaNewbieInfoReq extends NetHandler {
 
     @Override
     public byte[] handle(GameSession session, byte[] message) throws Exception {
-        var rsp = GachaInformationResp.newInstance();
+        var rsp = GachaNewbieInfoResp.newInstance();
+        var info = GachaNewbieInfo.newInstance()
+                .setId(5)
+                .setReceive(true);
+        
+        rsp.addList(info);
         
         return session.encodeMsg(NetMsgId.gacha_newbie_info_succeed_ack, rsp);
     }

src/main/java/emu/nebula/server/handlers/HandlerGachaSpinReq.java

@@ -2,50 +2,51 @@ package emu.nebula.server.handlers;
 
 import emu.nebula.net.NetHandler;
 import emu.nebula.net.NetMsgId;
+import emu.nebula.net.HandlerId;
+import emu.nebula.Nebula;
+import emu.nebula.net.GameSession;
 import emu.nebula.proto.GachaSpin.GachaCard;
 import emu.nebula.proto.GachaSpin.GachaSpinReq;
 import emu.nebula.proto.GachaSpin.GachaSpinResp;
 import emu.nebula.proto.Public.ItemTpl;
-import emu.nebula.util.Utils;
-import it.unimi.dsi.fastutil.ints.IntArrayList;
-import emu.nebula.net.HandlerId;
-import emu.nebula.Nebula;
-import emu.nebula.data.GameData;
-import emu.nebula.net.GameSession;
 
 @HandlerId(NetMsgId.gacha_spin_req)
 public class HandlerGachaSpinReq extends NetHandler {
 
-    @SuppressWarnings("unused")
     @Override
     public byte[] handle(GameSession session, byte[] message) throws Exception {
+        // Parse request
         var req = GachaSpinReq.parseFrom(message);
         
-        // Temp
-        var list = new IntArrayList();
+        // Do gacha
+        var result = Nebula.getGameContext().getGachaModule().spin(
+            session.getPlayer(),
+            req.getId(),
+            req.getMode()
+        );
         
-        for (var def : GameData.getCharacterDataTable()) {
-            if (def.getGrade() == 1 && def.isAvailable()) {
-                list.add(def.getId());
-            }
+        if (result == null) {
+            return session.encodeMsg(NetMsgId.gacha_spin_failed_ack);
         }
         
         // Build response
         var rsp = GachaSpinResp.newInstance()
-                .setTime(Nebula.getCurrentTime());
-        
-        rsp.getMutableChange();
-        rsp.getMutableNextPackage();
-        
-        for (int i = 0; i < 10; i++) {
-            int id = Utils.randomElement(list);
+                .setTime(Nebula.getCurrentTime())
+                .setAMissTimes(result.getInfo().getMissTimesA())
+                .setAupMissTimes(result.getInfo().getMissTimesA())
+                .setTotalTimes(result.getInfo().getTotal())
+                .setGachaTotalTimes(result.getInfo().getTotal())
+                .setAupGuaranteeTimes(result.getInfo().isUsedGuarantee() ? 0 : 1)
+                .setChange(result.getChange().toProto());
         
+        for (int id : result.getCards()) {
             var card = GachaCard.newInstance()
                     .setCard(ItemTpl.newInstance().setTid(id).setQty(1));
             
             rsp.addCards(card);
         }
         
+        // Encode and send response
         return session.encodeMsg(NetMsgId.gacha_spin_succeed_ack, rsp);
     }
 

src/main/java/emu/nebula/util/WeightedList.java

@@ -0,0 +1,35 @@
+package emu.nebula.util;
+
+import java.util.NavigableMap;
+import java.util.TreeMap;
+import java.util.concurrent.ThreadLocalRandom;
+
+public class WeightedList<E> {
+    private final NavigableMap<Double, E> map = new TreeMap<>();
+    private double total = 0;
+
+    public WeightedList() {
+
+    }
+
+    public WeightedList<E> add(double weight, E result) {
+        if (weight <= 0) return this;
+        total += weight;
+        map.put(total, result);
+        return this;
+    }
+
+    public E next() {
+        double value = ThreadLocalRandom.current().nextDouble() * total;
+        return map.higherEntry(value).getValue();
+    }
+
+    public int size() {
+        return map.size();
+    }
+
+    public void clear() {
+        this.map.clear();
+        this.total = 0;
+    }
+}