Preliminary rewrite of the loot system

初步重写掉落系统
2024-06-16 16:56:45 +08:00 · 2024-06-16 16:56:45 +08:00 · abf03c00a1
commit abf03c00a1
parent edaa490b5b
18 changed files with 312 additions and 326 deletions
--- a/data/itemRegs/weapons.yaml
+++ b/data/itemRegs/weapons.yaml
@ -2,3 +2,7 @@
  scene_path: res://prefab/weapons/staffOfTheUndead.tscn
  icon_path: res://sprites/weapon/staffOfTheUndead.png
  max_stack_value: 1
+  custom_args:
+    - name: FiringIntervalAsMillisecond
+      type: int
+      value: 1000
--- a/locals/Log.csv
+++ b/locals/Log.csv
@ -23,9 +23,11 @@ log_player_packed_scene_not_exist,玩家预制场景不存在。,Player packed s
 log_exit_the_room_debug,节点{0}退出房间{1}。,"Node {0} exits room {1}.",ノード{0}が部屋{1}を退出します。
 log_enter_the_room_debug,节点{0}进入房间{1}。,"Node {0} enters room {1}.",ノード{0}が部屋{1}に入ります。
 log_death_info,生物{0}被{1}击败。,"Creature {0} was defeated by {1}.",生物{0}が{1}によって打ち負かされました。
+
 log_loot_list_has_no_entries,ID为{0}的战利品表，没有指定条目。,"Loot list with ID {0}, no entry specified.",ID{0}の戦利品テーブルは、エントリ指定されていません。
 log_not_within_the_loot_spawn_range,给定的数值{0}没有在战利品{1}的生成范围{2}内。,The given value {0} is not within the spawn range {2} of loot {1}.,与えられた数値{0}は戦利品{1}の生成範囲{2}内にありません。
 log_loot_data_quantity,有{0}个战利品数据被返回。,{0} loot data was returned.,{0}個の戦利品データが返されます。
+log_loot_data_add,生成战利品{0},Add loot {0},戦利品{0}を生成する

 log_warning_node_cannot_cast_to,创建的物品{0}无法被转型为类型{1},Created items {0} cannot be cast into type {1},作成されたアイテム {0} をタイプ {1} にキャストすることはできません。

--- a/prefab/entitys/DelivererOfDarkMagic.tscn
+++ b/prefab/entitys/DelivererOfDarkMagic.tscn
@ -31,10 +31,10 @@ radius = 129.027
 collision_layer = 64
 collision_mask = 38
 script = ExtResource("1_ubaid")
+LootListId = "test"
 metadata/CampId = "Mazoku"
 metadata/MaxHp = 50
 metadata/Name = "死灵法师"
-metadata/LootListId = "Test"

 [node name="CollisionShape2D" type="CollisionShape2D" parent="."]
 position = Vector2(0, 4)
--- a/scripts/Config.cs
+++ b/scripts/Config.cs
@ -31,7 +31,7 @@ public static class Config
        /// <para>A trophy table for testing</para>
        /// <para>测试用的战利品表</para>
        /// </summary>
-        public const string Test = "Test";
+        public const string Test = "test";
    }

    /// <summary>
--- a/scripts/character/CharacterTemplate.cs
+++ b/scripts/character/CharacterTemplate.cs
@ -10,6 +10,7 @@ using ColdMint.scripts.inventory;
 using ColdMint.scripts.item;
 using ColdMint.scripts.utils;
 using ColdMint.scripts.item.weapon;
+using ColdMint.scripts.loot;

 using Godot;

@ -107,11 +108,7 @@ public partial class CharacterTemplate : CharacterBody2D

    private DamageNumberNodeSpawn? _damageNumber;

-    /// <summary>
-    /// <para>Character referenced loot table</para>
-    /// <para>角色引用的战利品表</para>
-    /// </summary>
-    private LootList? _lootList;
+    [Export] public string LootListId { get; private set; } = "";

    private HealthBar? _healthBar;
    private DateTime _lastDamageTime;
@ -208,12 +205,6 @@ public partial class CharacterTemplate : CharacterBody2D
        CampId = GetMeta("CampId",      Config.CampId.Default).AsString();
        MaxHp = GetMeta("MaxHp",        Config.DefaultMaxHp).AsInt32();
        var lootListId = GetMeta("LootListId", string.Empty).AsString();
-        if (!string.IsNullOrEmpty(lootListId))
-        {
-            //If a loot table is specified, get the loot table.
-            //如果指定了战利品表，那么获取战利品表。
-            _lootList = LootListManager.GetLootList(lootListId);
-        }

        if (MaxHp <= 0)
        {
@ -461,20 +452,11 @@ public partial class CharacterTemplate : CharacterBody2D
    /// </summary>
    protected void CreateLootObject()
    {
-        if (_lootList == null)
-        {
-            return;
-        }
-
-        var lootDataArray = _lootList.GenerateLootData();
-        if (lootDataArray.Length == 0)
-        {
-            return;
-        }
-
-
+        var lootData = LootListManager.GenerateLootData(LootListId);
        var finalGlobalPosition = GlobalPosition;
-        CallDeferred("GenerateLootObjects", this, lootDataArray, finalGlobalPosition);
+        //Todo : change name str to nameof(), like this
+        // CallDeferred(nameof(GenerateLootObjects), this, lootData, finalGlobalPosition);
+        GenerateLootObjects(GetParent(), lootData, finalGlobalPosition);
    }

    /// <summary>
@ -482,13 +464,17 @@ public partial class CharacterTemplate : CharacterBody2D
    /// <para>生成战利品对象</para>
    /// </summary>
    /// <param name="parentNode"></param>
-    /// <param name="lootDataArray"></param>
+    /// <param name="lootData"></param>
    /// <param name="position"></param>
    public void GenerateLootObjects(Node parentNode,
-                                    LootData[] lootDataArray,
+                                    IEnumerable<LootDatum> lootData,
                                    Vector2 position)
    {
-        LootListManager.GenerateLootObjects(parentNode, lootDataArray, position);
+        foreach (var lootDatum in lootData)
+        {
+            var (id, amount) = lootDatum.Value;
+            ItemTypeManager.CreateItems(id, amount, parentNode, position);
+        }
    }

    /// <summary>
@ -601,14 +587,8 @@ public partial class CharacterTemplate : CharacterBody2D
            //Generates a random number that controls the horizontal velocity of thrown items (range: 0.01 to 1)
            //生成一个随机数，用于控制抛出物品的水平方向速度(范围为：0.01到1)
            var percent = GD.Randf() + 0.01f;
-            if (GD.Randf() > 0.5)
-            {
-                ThrowItem(i, -1, new Vector2(horizontalDirection * percent, height));
-            }
-            else
-            {
-                ThrowItem(i, -1, new Vector2(-horizontalDirection * percent, height));
-            }
+            var horizontalVelocity = horizontalDirection * percent * GD.Randf() > 0.5 ? 1f : -1f;
+            ThrowItem(i, -1, new Vector2(horizontalVelocity, height));
        }
    }

--- a/scripts/inventory/LootData.cs
+++ b/scripts/inventory/LootData.cs
@ -1,9 +0,0 @@
-using Godot;
-
-namespace ColdMint.scripts.inventory;
-
-public partial class LootData : GodotObject
-{
-    public string? ResPath { get; set; }
-    public int Quantity { get; set; }
-}
--- a/scripts/inventory/LootEntry.cs
+++ b/scripts/inventory/LootEntry.cs
@ -1,32 +0,0 @@
-namespace ColdMint.scripts.inventory;
-
-/// <summary>
-/// <para>Loot entry</para>
-/// <para>战利品条目</para>
-/// </summary>
-public class LootEntry
-{
-    /// <summary>
-    /// <para>generation probability</para>
-    /// <para>生成概率</para>
-    /// </summary>
-    public double? Chance { get; set; }
-
-    /// <summary>
-    /// <para>Minimum number of generated</para>
-    /// <para>最小生成多少个</para>
-    /// </summary>
-    public int MinQuantity { get; set; }
-    
-    /// <summary>
-    /// <para>The maximum number of files to be generated</para>
-    /// <para>最多生成多少个</para>
-    /// </summary>
-    public int MaxQuantity { get; set; }
-
-    /// <summary>
-    /// <para>resources path</para>
-    /// <para>资源路径</para>
-    /// </summary>
-    public string? ResPath { get; set; }
-}
--- a/scripts/inventory/LootList.cs
+++ b/scripts/inventory/LootList.cs
@ -1,93 +0,0 @@
-using System.Collections.Generic;
-using ColdMint.scripts.debug;
-using Godot;
-
-namespace ColdMint.scripts.inventory;
-
-/// <summary>
-/// <para>Loot list</para>
-/// <para>战利品表</para>
-/// </summary>
-public class LootList
-{
-    /// <summary>
-    /// <para>Id</para>
-    /// <para>战利品表的Id</para>
-    /// </summary>
-    public string? Id { get; set; }
-
-    private List<LootEntry>? _lootEntrieList;
-
-    /// <summary>
-    /// <para>Add loot entry</para>
-    /// <para>添加战利品条目</para>
-    /// </summary>
-    /// <param name="lootEntry"></param>
-    public void AddLootEntry(LootEntry lootEntry)
-    {
-        if (_lootEntrieList == null)
-        {
-            _lootEntrieList = new List<LootEntry>();
-        }
-
-        _lootEntrieList.Add(lootEntry);
-    }
-
-
-    /// <summary>
-    /// <para>GenerateLootData</para>
-    /// <para>生成战利品数据</para>
-    /// </summary>
-    /// <returns></returns>
-    public LootData[] GenerateLootData()
-    {
-        var lootDataList = new List<LootData>();
-        if (_lootEntrieList == null)
-        {
-            LogCat.LogWithFormat("loot_list_has_no_entries", Id);
-            return lootDataList.ToArray();
-        }
-
-        foreach (var lootEntry in _lootEntrieList)
-        {
-            var chance = GD.Randf();
-            if (chance > lootEntry.Chance)
-            {
-                //If the random number is greater than the generation probability, skip the current loop.
-                //如果随机数大于生成概率，则跳过当前循环。
-                LogCat.LogWithFormat("not_within_the_loot_spawn_range", chance, lootEntry.ResPath, lootEntry.Chance);
-                continue;
-            }
-
-            //We generate a loot data for each loot entry.
-            //我们为每个战利品条目生成一个战利品数据。
-            var quantity = GD.RandRange(lootEntry.MinQuantity, lootEntry.MaxQuantity);
-            var lootData = new LootData
-            {
-                ResPath = lootEntry.ResPath,
-                Quantity = quantity
-            };
-            lootDataList.Add(lootData);
-        }
-
-        LogCat.LogWithFormat("loot_data_quantity", lootDataList.Count);
-        return lootDataList.ToArray();
-    }
-
-
-    /// <summary>
-    /// <para>Remove loot entry</para>
-    /// <para>移除战利品条目</para>
-    /// </summary>
-    /// <param name="lootEntry"></param>
-    /// <returns></returns>
-    public bool RemoveLootEntry(LootEntry lootEntry)
-    {
-        if (_lootEntrieList == null)
-        {
-            return false;
-        }
-
-        return _lootEntrieList.Remove(lootEntry);
-    }
-}
--- a/scripts/inventory/LootListManager.cs
+++ b/scripts/inventory/LootListManager.cs
@ -1,117 +0,0 @@
-using System.Collections.Generic;
-using ColdMint.scripts.utils;
-using Godot;
-
-namespace ColdMint.scripts.inventory;
-
-/// <summary>
-/// <para>LootListManager</para>
-/// <para>战利品表管理器</para>
-/// </summary>
-public static class LootListManager
-{
-    private static Dictionary<string, LootList>? _lootListDictionary;
-
-
-    /// <summary>
-    /// <para>Register loot table</para>
-    /// <para>注册战利品表</para>
-    /// </summary>
-    /// <param name="lootList"></param>
-    public static bool RegisterLootList(LootList lootList)
-    {
-        var id = lootList.Id;
-        if (id == null)
-        {
-            return false;
-        }
-
-        if (_lootListDictionary != null) return _lootListDictionary.TryAdd(id, lootList);
-        _lootListDictionary = new Dictionary<string, LootList> { { id, lootList } };
-        return true;
-    }
-
-    /// <summary>
-    /// <para>Get Loot List</para>
-    /// <para>获取战利品表</para>
-    /// </summary>
-    /// <param name="id"></param>
-    /// <returns></returns>
-    public static LootList? GetLootList(string id)
-    {
-        return _lootListDictionary?.GetValueOrDefault(id);
-    }
-
-    /// <summary>
-    /// <para>Generate loot objects</para>
-    /// <para>生成战利品对象</para>
-    /// </summary>
-    public static void GenerateLootObjects(Node parentNode, LootData[] lootDataArray, Vector2 position)
-    {
-        if (lootDataArray.Length == 0)
-        {
-            return;
-        }
-
-        //Cache the loaded PackedScene object.
-        //缓存已加载的PackedScene对象。
-        Dictionary<string, PackedScene> packedSceneDictionary = new();
-        foreach (var lootData in lootDataArray)
-        {
-            if (string.IsNullOrEmpty(lootData.ResPath) || lootData.Quantity == 0)
-            {
-                continue;
-            }
-
-            if (!packedSceneDictionary.TryGetValue(lootData.ResPath, out var packedScene))
-            {
-                packedScene = GD.Load<PackedScene>(lootData.ResPath);
-                packedSceneDictionary.TryAdd(lootData.ResPath, packedScene);
-            }
-
-            for (var i = 0; i < lootData.Quantity; i++)
-            {
-                //Generate as many loot instance objects as there are loot.
-                //有多少个战利品就生成多少个战利品实例对象。
-                CreateLootInstanceObject(parentNode, packedScene, position);
-            }
-        }
-    }
-
-
-    /// <summary>
-    /// <para>Create a loot instance object</para>
-    /// <para>创建战利品实例对象</para>
-    /// </summary>
-    private static void CreateLootInstanceObject(Node parent, PackedScene? packedScene, Vector2 position)
-    {
-        if (packedScene == null)
-        {
-            return;
-        }
-
-        var lootObject = NodeUtils.InstantiatePackedScene<Node2D>(packedScene, parent);
-        if (lootObject == null)
-        {
-            return;
-        }
-
-        lootObject.Position = position;
-    }
-
-    /// <summary>
-    /// <para>Remove loot list</para>
-    /// <para>移除战利品表</para>
-    /// </summary>
-    /// <param name="id"></param>
-    /// <returns></returns>
-    public static bool UnregisterLootList(string id)
-    {
-        if (_lootListDictionary == null)
-        {
-            return false;
-        }
-
-        return _lootListDictionary.Remove(id);
-    }
-}
--- a/scripts/item/ItemTypeManager.cs
+++ b/scripts/item/ItemTypeManager.cs
@ -1,13 +1,9 @@
 using System.Collections.Generic;

-using ColdMint.scripts.debug;
 using ColdMint.scripts.utils;

 using Godot;

-using YamlDotNet.Serialization;
-using YamlDotNet.Serialization.NamingConventions;
-
 namespace ColdMint.scripts.item;

 /// <summary>
@ -16,12 +12,6 @@ namespace ColdMint.scripts.item;
 /// </summary>
 public static class ItemTypeManager
 {
-    /// <summary>
-    /// <para>Register items here</para>
-    /// <para>在这里注册物品</para>
-    /// </summary>
-    public static void StaticRegister() { }
-
    private static Dictionary<string, ItemType> Registry { get; } = [];
    private static Texture2D DefaultTexture { get; } = new PlaceholderTexture2D();

@ -45,9 +35,66 @@ public static class ItemTypeManager
    /// <para>Returns null when the id is not registered.</para>
    /// <para>当物品id没有注册时返回null</para>
    /// </returns>
+    /// <seealso cref="NewItems"/><seealso cref="CreateItem"/>
    public static IItem? NewItem(string id) =>
        Registry.TryGetValue(id, out var itemType) ? itemType.NewItemFunc() : null;

+    /// <summary>
+    /// <para>Creates new instances in given amount of the item registered to the given id.</para>
+    /// <para>创建给定数量的注册到给定 id 的物品的新实例。</para>
+    /// </summary>
+    /// <returns></returns>
+    /// <seealso cref="NewItem"/><seealso cref="CreateItems"/>
+    public static IList<IItem> NewItems(string id, int amount)
+    {
+        IList<IItem> result = [];
+        for (int i = 0; i < amount; i++)
+        {
+            if (NewItem(id) is { } item) result.Add(item);
+        }
+
+        return result;
+    }
+
+    /// <summary>
+    /// <para>Creates new instance of the item registered to the given id, and put it into given position in both node tree and 2D space</para>
+    /// <para>创建以给定 id 注册的物品的新实例，并将其放到节点树和二维空间中的给定位置</para>
+    /// </summary>
+    /// <param name="id"></param>
+    /// <param name="parent"></param>
+    /// <param name="position">
+    /// <para>Position in global coordinate</para>
+    /// <para>全局坐标中的位置</para>
+    /// </param>
+    /// <seealso cref="NewItem"/><seealso cref="CreateItems"/>
+    public static void CreateItem(string id, Node? parent = null, Vector2? position = null)
+    {
+        var item = NewItem(id);
+        parent?.AddChild(item as Node);
+        if (item is not Node2D node) return;
+        if (position is { } pos) node.GlobalPosition = pos;
+    }
+
+    /// <summary>
+    /// <para>Creates new instances in given amount of the item registered to the given id, and put them into given position in both node tree and 2D space</para>
+    /// <para>创建以给定 id 注册的物品的给定数量的新实例，并将其放到节点树和二维空间中的给定位置</para>
+    /// </summary>
+    /// <param name="id"></param>
+    /// <param name="amount"></param>
+    /// <param name="parent"></param>
+    /// <param name="position">
+    /// <para>Position in global coordinate</para>
+    /// <para>全局坐标中的位置</para>
+    /// </param>
+    /// <seealso cref="NewItems"/><seealso cref="CreateItem"/>
+    public static void CreateItems(string id, int amount, Node? parent = null, Vector2? position = null)
+    {
+        for (int i = 0; i < amount; i++)
+        {
+            CreateItem(id, parent, position);
+        }
+    }
+
    /// <summary>
    /// <para>Get the translated default name of the item type for the given id</para>
    /// <para>获取指定物品id翻译后的物品名</para>
--- a/scripts/item/ItemTypeRegister.cs
+++ b/scripts/item/ItemTypeRegister.cs
@ -17,6 +17,12 @@ namespace ColdMint.scripts.item;
 /// </summary>
 public static class ItemTypeRegister
 {
+    /// <summary>
+    /// <para>Register items here</para>
+    /// <para>在这里注册物品</para>
+    /// </summary>
+    public static void StaticRegister() { }
+    
    /// <summary>
    /// <para>Register items from yaml file</para>
    /// <para>从文件注册物品</para>
--- a/scripts/loader/uiLoader/MainMenuLoader.cs
+++ b/scripts/loader/uiLoader/MainMenuLoader.cs
@ -7,6 +7,7 @@ using ColdMint.scripts.deathInfo;
 using ColdMint.scripts.debug;
 using ColdMint.scripts.inventory;
 using ColdMint.scripts.item;
+using ColdMint.scripts.loot;
 using ColdMint.scripts.map;
 using ColdMint.scripts.map.roomInjectionProcessor;

@ -43,31 +44,6 @@ public partial class MainMenuLoader : UiLoaderTemplate
            LogCat.MinLogLevel = LogCat.DisableAllLogLevel;
        }

-        //注册测试使用的战利品表
-        if (Config.IsDebug())
-        {
-            var testLootList = new LootList
-            {
-                Id = Config.LootListId.Test
-            };
-            var staffOfTheUndead = new LootEntry
-            {
-                Chance = 0.05f,
-                MaxQuantity = 5,
-                MinQuantity = 1,
-                ResPath = "res://prefab/weapons/staffOfTheUndead.tscn"
-            };
-            testLootList.AddLootEntry(staffOfTheUndead);
-            var packsack = new LootEntry
-            {
-                Chance = 1f,
-                MaxQuantity = 1,
-                MinQuantity = 1,
-                ResPath = "res://prefab/packsacks/packsack.tscn"
-            };
-            testLootList.AddLootEntry(packsack);
-            LootListManager.RegisterLootList(testLootList);
-        }

        DeathInfoGenerator.RegisterDeathInfoHandler(new SelfDeathInfoHandler());
        MapGenerator.RegisterRoomInjectionProcessor(new ChanceRoomInjectionProcessor());
@ -82,6 +58,7 @@ public partial class MainMenuLoader : UiLoaderTemplate
            Directory.CreateDirectory(dataPath);
        }

+
        //Registered camp
        //注册阵营
        var defaultCamp = new Camp(Config.CampId.Default)
@ -100,7 +77,10 @@ public partial class MainMenuLoader : UiLoaderTemplate
        ItemTypeRegister.RegisterFromFile();
        //Hardcoded ItemTypes Register
        //硬编码注册物品类型
-        ItemTypeManager.StaticRegister();
+        ItemTypeRegister.StaticRegister();
+        
+        //静态注册掉落表
+        LootRegister.StaticRegister();
    }

    public override void InitializeUi()
--- a/scripts/loot/LootDatum.cs
+++ b/scripts/loot/LootDatum.cs
@ -0,0 +1,8 @@
+using Godot;
+
+namespace ColdMint.scripts.loot;
+
+public readonly record struct LootDatum(string ItemId, int Quantity)
+{
+    public (string id, int quantity) Value => (ItemId, Quantity);
+}
--- a/scripts/loot/LootEntry.cs
+++ b/scripts/loot/LootEntry.cs
@ -0,0 +1,68 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+using ColdMint.scripts.utils;
+
+namespace ColdMint.scripts.loot;
+
+/// <summary>
+/// <para>Loot entry</para>
+/// <para>战利品条目</para>
+/// </summary>
+public readonly struct LootEntry(string itemId,int minQuantity=1,int maxQuantity = 1,int weight = 1)
+{
+    /// <summary>
+    /// <para>ID of item</para>
+    /// <para>物品ID</para>
+    /// </summary>
+    public string ItemId { get; init; } = itemId;
+
+    /// <summary>
+    /// <para>Minimum number of generated</para>
+    /// <para>最小生成多少个</para>
+    /// </summary>
+    public int MinQuantity { get; init; } = minQuantity;
+
+    /// <summary>
+    /// <para>The maximum number of files to be generated</para>
+    /// <para>最多生成多少个</para>
+    /// </summary>
+    public int MaxQuantity { get; init; } = maxQuantity;
+
+    /// <summary>
+    /// <para>Weight of probability within the drop group</para>
+    /// <para>在掉落组内的生成权重</para>
+    /// </summary>
+    public int Weight { get; init; } = weight;
+}
+
+/// <summary>
+/// <para>Loot Group</para>
+/// <para>战利品分组</para>
+/// </summary>
+/// <param name="Chance"></param>
+/// <param name="Entries"></param>
+public readonly record struct LootGroup(double Chance, IEnumerable<LootEntry> Entries)
+{
+    private int WeightSum { get; } = Entries.Sum(entry => entry.Weight);
+
+    public LootDatum GenerateLootData()
+    {
+        var random = RandomUtils.Instance;
+        var w = random.Next(WeightSum);
+        LootEntry entry = default;
+        foreach (var e in Entries)
+        {
+            w -= e.Weight;
+            if (w < 0)
+            {
+                entry = e;
+            }
+        }
+
+        var quantity = random.Next(entry.MinQuantity, entry.MaxQuantity + 1);
+
+        return new(entry.ItemId, quantity);
+    }
+}
--- a/scripts/loot/LootList.cs
+++ b/scripts/loot/LootList.cs
@ -0,0 +1,53 @@
+using System;
+using System.Collections.Generic;
+
+using ColdMint.scripts.debug;
+using ColdMint.scripts.utils;
+
+using Godot;
+
+namespace ColdMint.scripts.loot;
+
+/// <summary>
+/// <para>Loot list</para>
+/// <para>战利品表</para>
+/// </summary>
+public readonly struct LootList(string id, IList<LootGroup> groups)
+{
+    public string Id { get; } = id;
+    private IList<LootGroup> Groups { get; } = groups;
+
+    private static Random Random => RandomUtils.Instance;
+
+    /// <summary>
+    /// <para>GenerateLootData</para>
+    /// <para>生成战利品数据</para>
+    /// </summary>
+    /// <returns></returns>
+    public LootDatum[] GenerateLootData()
+    {
+        if (Groups is [])
+        {
+            LogCat.LogWithFormat("loot_list_has_no_entries", Id);
+            return [];
+        }
+
+        var lootDataList = new List<LootDatum>();
+        foreach (var group in Groups)
+        {
+            //If the random number is greater than the generation probability, skip the current loop.
+            //如果随机数大于生成概率，则跳过当前循环。
+            var rd = Random.NextDouble();
+            if (rd > group.Chance) continue;
+
+            //We generate a loot data for each loot entry.
+            //我们为每个战利品条目生成一个战利品数据。
+            var datum = group.GenerateLootData();
+            lootDataList.Add(datum);
+            LogCat.LogWithFormat("loot_data_add", datum);
+        }
+
+        LogCat.LogWithFormat("loot_data_quantity", lootDataList.Count);
+        return lootDataList.ToArray();
+    }
+}
--- a/scripts/loot/LootListManager.cs
+++ b/scripts/loot/LootListManager.cs
@ -0,0 +1,51 @@
+using System.Collections.Generic;
+
+using ColdMint.scripts.utils;
+
+using Godot;
+
+namespace ColdMint.scripts.loot;
+
+/// <summary>
+/// <para>LootListManager</para>
+/// <para>战利品表管理器</para>
+/// </summary>
+public static class LootListManager
+{
+    private static Dictionary<string, LootList> LootListDictionary { get; } = [];
+
+    /// <summary>
+    /// <para>Register loot table</para>
+    /// <para>注册战利品表</para>
+    /// </summary>
+    /// <param name="lootList"></param>
+    public static bool RegisterLootList(LootList lootList)
+    {
+        var id = lootList.Id;
+        if (id is "") return false;
+        return LootListDictionary.TryAdd(id, lootList);
+    }
+
+    /// <summary>
+    /// <para>Remove loot list</para>
+    /// <para>移除战利品表</para>
+    /// </summary>
+    /// <param name="id"></param>
+    /// <returns></returns>
+    public static bool UnregisterLootList(string id)
+    {
+        return LootListDictionary.Remove(id);
+    }
+
+    /// <summary>
+    /// <para>Generate an loot data.</para>
+    /// <para>获取掉落物品</para>
+    /// </summary>
+    /// <param name="id"></param>
+    /// <returns></returns>
+    public static IEnumerable<LootDatum> GenerateLootData(string id)
+    {
+        if (!LootListDictionary.TryGetValue(id, out var list)) return [];
+        return list.GenerateLootData();
+    }
+}
--- a/scripts/loot/LootRegister.cs
+++ b/scripts/loot/LootRegister.cs
@ -0,0 +1,30 @@
+using System.Collections.Generic;
+
+namespace ColdMint.scripts.loot;
+
+public static class LootRegister
+{
+    /// <summary>
+    /// <para>Register loots hardcoded here</para>
+    /// <para>在这里硬编码地注册掉落表</para>
+    /// </summary>
+    public static void StaticRegister()
+    {
+        //注册测试使用的战利品表
+        if (Config.IsDebug())
+        {
+            IList<LootGroup> lootGroups = [];
+            lootGroups.Add(new LootGroup(1,
+            [
+                new LootEntry("packsack", weight: 2), new LootEntry("staff_of_the_undead", minQuantity: 2, maxQuantity: 4)
+            ]));
+            lootGroups.Add(new LootGroup(0.3,
+            [
+                new LootEntry("packsack")
+            ]));
+
+            var testLootList = new LootList(Config.LootListId.Test, lootGroups);
+            LootListManager.RegisterLootList(testLootList);
+        }
+    }
+}
--- a/scripts/utils/RandomUtils.cs
+++ b/scripts/utils/RandomUtils.cs
@ -0,0 +1,8 @@
+using System;
+
+namespace ColdMint.scripts.utils;
+
+public static class RandomUtils
+{
+    public static Random Instance { get; } = new();
+}