Entity system

GameServer/Controllers/Attributes/GameEventAttribute.cs

@@ -1,4 +1,4 @@
-using GameServer.Controllers.Event;
+using GameServer.Systems.Event;
 
 namespace GameServer.Controllers.Attributes;
 

GameServer/Controllers/CreatureController.cs

@@ -0,0 +1,147 @@
+using GameServer.Controllers.Attributes;
+using GameServer.Models;
+using GameServer.Network;
+using GameServer.Network.Messages;
+using GameServer.Systems.Entity;
+using GameServer.Systems.Entity.Component;
+using GameServer.Systems.Event;
+using Protocol;
+
+namespace GameServer.Controllers;
+internal class CreatureController : Controller
+{
+    private readonly EntitySystem _entitySystem;
+    private readonly EntityFactory _entityFactory;
+    private readonly ModelManager _modelManager;
+
+    public CreatureController(PlayerSession session, EntitySystem entitySystem, EntityFactory entityFactory, ModelManager modelManager) : base(session)
+    {
+        _entitySystem = entitySystem;
+        _entityFactory = entityFactory;
+        _modelManager = modelManager;
+    }
+
+    public async Task JoinScene(int instanceId)
+    {
+        _modelManager.Creature.SetSceneLoadingData(instanceId);
+        CreateInitialPlayer();
+
+        await Session.Push(MessageId.JoinSceneNotify, new JoinSceneNotify
+        {
+            MaxEntityId = 10000,
+            TransitionOption = new TransitionOptionPb
+            {
+                TransitionType = (int)TransitionType.Empty
+            },
+            SceneInfo = CreateSceneInfo()
+        });
+    }
+
+    [NetEvent(MessageId.EntityActiveRequest)]
+    public async Task<ResponseMessage> OnEntityActiveRequest(EntityActiveRequest request)
+    {
+        EntityActiveResponse response;
+
+        EntityBase? entity = _entitySystem.Get<EntityBase>(request.EntityId);
+        if (entity != null)
+        {
+            _entitySystem.Activate(entity);
+            response = new EntityActiveResponse
+            {
+                ErrorCode = (int)ErrorCode.Success
+            };
+
+            response.ComponentPbs.AddRange(entity.ComponentSystem.Pb);
+        }
+        else
+        {
+            response = new EntityActiveResponse { ErrorCode = (int)ErrorCode.ErrActionEntityNoExist };
+        }
+
+        await OnVisionSkillChanged();
+        return Response(MessageId.EntityActiveResponse, response);
+    }
+
+    [NetEvent(MessageId.SceneLoadingFinishRequest)]
+    public ResponseMessage OnSceneLoadingFinishRequest()
+    {
+        _modelManager.Creature.OnWorldDone();
+
+        return Response(MessageId.SceneLoadingFinishResponse, new SceneLoadingFinishResponse());
+    }
+
+    [GameEvent(GameEventType.VisionSkillChanged)]
+    public async Task OnVisionSkillChanged()
+    {
+        PlayerEntity? playerEntity = GetPlayerEntity(_modelManager.Player.Id);
+        if (playerEntity == null) return;
+
+        EntityVisionSkillComponent visionSkillComponent = playerEntity.ComponentSystem.Get<EntityVisionSkillComponent>();
+
+        VisionSkillChangeNotify skillChangeNotify = new() { EntityId = playerEntity.Id };
+        skillChangeNotify.VisionSkillInfos.AddRange(visionSkillComponent.Skills);
+
+        await Session.Push(MessageId.VisionSkillChangeNotify, skillChangeNotify);
+    }
+
+    public PlayerEntity? GetPlayerEntity(int playerId)
+    {
+        return _entitySystem.EnumerateEntities().FirstOrDefault(entity => entity is PlayerEntity p && p.PlayerId == playerId) as PlayerEntity;
+    }
+
+    private SceneInformation CreateSceneInfo()
+    {
+        SceneInformation scene = new()
+        {
+            InstanceId = _modelManager.Creature.InstanceId,
+            OwnerId = _modelManager.Creature.OwnerId,
+            CurContextId = _modelManager.Player.Id,
+            TimeInfo = new(),
+            AoiData = new(),
+            PlayerInfos =
+            {
+                new ScenePlayerInformation
+                {
+                    PlayerId = _modelManager.Player.Id,
+                    Level = 1,
+                    IsOffline = false,
+                    Location = new()
+                    {
+                        X = 4000,
+                        Y = -2000,
+                        Z = 260
+                    },
+                    FightRoleInfos =
+                    {
+                        new FightRoleInformation
+                        {
+                            EntityId = 1,
+                            CurHp = 1000,
+                            MaxHp = 1000,
+                            IsControl = true,
+                            RoleId = _modelManager.Player.CharacterId,
+                            RoleLevel = 1,
+                        }
+                    },
+                    PlayerName = _modelManager.Player.Name
+                }
+            }
+        };
+
+        scene.AoiData.Entities.AddRange(_entitySystem.Pb);
+        return scene;
+    }
+
+    private void CreateInitialPlayer()
+    {
+        PlayerEntity entity = _entityFactory.CreatePlayer(1601, _modelManager.Player.Id);
+        entity.Pos = new()
+        {
+            X = 4000,
+            Y = -2000,
+            Z = 260
+        };
+
+        _entitySystem.Create(entity);
+    }
+}

GameServer/Controllers/Event/GameEventType.cs

@@ -1,6 +0,0 @@
-namespace GameServer.Controllers.Event;
-internal enum GameEventType
-{
-    Login = 1,
-    EnterGame
-}

GameServer/Controllers/Factory/EventHandlerFactory.cs

@@ -2,8 +2,8 @@
 using System.Linq.Expressions;
 using System.Reflection;
 using GameServer.Controllers.Attributes;
-using GameServer.Controllers.Event;
 using GameServer.Network.Messages;
+using GameServer.Systems.Event;
 using Google.Protobuf;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;

GameServer/Controllers/FunctionalController.cs

@@ -1,6 +1,6 @@
 using GameServer.Controllers.Attributes;
-using GameServer.Controllers.Event;
 using GameServer.Network;
+using GameServer.Systems.Event;
 using Protocol;
 
 namespace GameServer.Controllers;

GameServer/Controllers/LoginController.cs

@@ -1,7 +1,7 @@
 using GameServer.Controllers.Attributes;
-using GameServer.Controllers.Event;
 using GameServer.Network;
 using GameServer.Network.Messages;
+using GameServer.Systems.Event;
 using Microsoft.Extensions.Logging;
 using Protocol;
 

GameServer/Controllers/Manager/ControllerManager.cs

@@ -1,6 +1,5 @@
-using GameServer.Controllers.Event;
+using GameServer.Controllers.Factory;
-using GameServer.Controllers.Factory;
+using GameServer.Systems.Event;
-using GameServer.Network;
 using Microsoft.Extensions.DependencyInjection;
 
 namespace GameServer.Controllers.Manager;

GameServer/Controllers/PlayerInfoController.cs

@@ -1,7 +1,7 @@
 using GameServer.Controllers.Attributes;
-using GameServer.Controllers.Event;
 using GameServer.Models;
 using GameServer.Network;
+using GameServer.Systems.Event;
 using Protocol;
 
 namespace GameServer.Controllers;

GameServer/Controllers/RoleController.cs

@@ -1,8 +1,8 @@
 using GameServer.Controllers.Attributes;
-using GameServer.Controllers.Event;
 using GameServer.Models;
 using GameServer.Network;
 using GameServer.Network.Messages;
+using GameServer.Systems.Event;
 using Protocol;
 
 namespace GameServer.Controllers;

GameServer/Controllers/RouletteController.cs

@@ -1,7 +1,10 @@
 using GameServer.Controllers.Attributes;
-using GameServer.Controllers.Event;
+using GameServer.Models;
 using GameServer.Network;
 using GameServer.Network.Messages;
+using GameServer.Systems.Entity;
+using GameServer.Systems.Entity.Component;
+using GameServer.Systems.Event;
 using Protocol;
 
 namespace GameServer.Controllers;
@@ -38,19 +41,15 @@ internal class RouletteController : Controller
     }
 
     [NetEvent(MessageId.VisionExploreSkillSetRequest)]
-    public async Task<ResponseMessage> OnVisionExploreSkillSetRequest(VisionExploreSkillSetRequest request)
+    public async Task<ResponseMessage> OnVisionExploreSkillSetRequest(VisionExploreSkillSetRequest request, CreatureController creatureController, ModelManager modelManager, EventSystem eventSystem)
     {
-        await Session.Push(MessageId.VisionSkillChangeNotify, new VisionSkillChangeNotify
+        PlayerEntity? playerEntity = creatureController.GetPlayerEntity(modelManager.Player.Id);
-        {
+        if (playerEntity == null) return Response(MessageId.VisionExploreSkillSetResponse, new VisionExploreSkillSetResponse { ErrCode = (int)ErrorCode.PlayerNotInAnyScene });
-            EntityId = 1,
+
-            VisionSkillInfos =
+        EntityVisionSkillComponent visionSkillComponent = playerEntity.ComponentSystem.Get<EntityVisionSkillComponent>();
-            {
+        visionSkillComponent.SetExploreTool(request.SkillId);
-                new VisionSkillInformation
+
-                {
+        await eventSystem.Emit(GameEventType.VisionSkillChanged);
-                    SkillId = request.SkillId
-                }
-            }
-        });
 
         return Response(MessageId.VisionExploreSkillSetResponse, new VisionExploreSkillSetResponse
         {

GameServer/Controllers/WorldController.cs

@@ -1,8 +1,7 @@
 using GameServer.Controllers.Attributes;
-using GameServer.Controllers.Event;
-using GameServer.Models;
 using GameServer.Network;
 using GameServer.Network.Messages;
+using GameServer.Systems.Event;
 using Protocol;
 
 namespace GameServer.Controllers;
@@ -14,186 +13,10 @@ internal class WorldController : Controller
     }
 
     [GameEvent(GameEventType.EnterGame)]
-    public async Task OnEnterGame(ModelManager modelManager)
+    public async Task OnEnterGame(CreatureController creatureController)
     {
-        PlayerModel player = modelManager.Player;
+        await creatureController.JoinScene(8);
-
-        await Session.Push(MessageId.JoinSceneNotify, new JoinSceneNotify
-        {
-            MaxEntityId = 2,
-            TransitionOption = new TransitionOptionPb
-            {
-                TransitionType = (int)TransitionType.Empty
-            },
-            SceneInfo = new SceneInformation
-            {
-                OwnerId = player.Id,
-                Mode = (int)SceneMode.Single,
-                InstanceId = 8,
-                AoiData = new PlayerSceneAoiData
-                {
-                    GenIds = { 1 },
-                    Entities =
-                    {
-                        new EntityPb
-                        {
-                            EntityState = (int)EntityState.Born,
-                            EntityType = (int)EEntityType.Player,
-                            PlayerId = player.Id,
-                            LivingStatus = (int)LivingStatus.Alive,
-                            ConfigId = player.CharacterId,
-                            ConfigType = (int)EntityConfigType.Character,
-                            Id = 1,
-                            IsVisible = true,
-                            Pos = new Vector
-                            {
-                                X = 4000,
-                                Y = -2000,
-                                Z = 260
-                            },
-                            Rot = new(),
-                            InitLinearVelocity = new(),
-                            PrefabIncId = 0,
-                            InitPos = new Vector
-                            {
-                                X = 4000,
-                                Y = -2000,
-                                Z = 260
-                            },
-                            ComponentPbs =
-                            {
-                                new EntityComponentPb
-                                {
-                                    VisionSkillComponent = new VisionSkillComponentPb
-                                    {
-                                        VisionSkillInfos =
-                                        {
-                                            new VisionSkillInformation
-                                            {
-                                                SkillId = 1001
     }
-                                        }
-                                    }
-                                },
-                                new EntityComponentPb
-                                {
-                                    AttributeComponent = new AttributeComponentPb
-                                    {
-                                        GameAttributes =
-                                        {
-                                            new GameplayAttributeData
-                                            {
-                                                AttributeType = (int)EAttributeType.Life,
-                                                BaseValue = 1000,
-                                                CurrentValue = 1000
-                                            },
-                                            new GameplayAttributeData
-                                            {
-                                                AttributeType = (int)EAttributeType.LifeMax,
-                                                BaseValue = 1000,
-                                                CurrentValue = 1000
-                                            },
-                                            new GameplayAttributeData
-                                            {
-                                                AttributeType = (int)EAttributeType.EnergyMax,
-                                                BaseValue = 10,
-                                                CurrentValue = 10
-                                            },
-                                            new GameplayAttributeData
-                                            {
-                                                AttributeType = (int)EAttributeType.Energy,
-                                                BaseValue = 10,
-                                                CurrentValue = 10
-                                            },
-                                            new GameplayAttributeData
-                                            {
-                                                AttributeType = (int)EAttributeType.SpecialEnergy3,
-                                                BaseValue = 10,
-                                                CurrentValue = 10
-                                            },
-                                            new GameplayAttributeData
-                                            {
-                                                AttributeType = (int)EAttributeType.SpecialEnergy3Max,
-                                                BaseValue = 10,
-                                                CurrentValue = 10
-                                            },
-                                            new GameplayAttributeData
-                                            {
-                                                AttributeType = (int)EAttributeType.AutoAttackSpeed,
-                                                BaseValue = 10000,
-                                                CurrentValue = 10000
-                                            },
-                                            new GameplayAttributeData
-                                            {
-                                                AttributeType = (int)EAttributeType.CastAttackSpeed,
-                                                BaseValue = 10000,
-                                                CurrentValue = 10000
-                                            },
-                                            new GameplayAttributeData
-                                            {
-                                                AttributeType = (int)EAttributeType.Atk,
-                                                BaseValue = 1,
-                                                CurrentValue = 1
-                                            },
-                                            new GameplayAttributeData
-                                            {
-                                                AttributeType = (int)EAttributeType.Lv,
-                                                BaseValue = 1,
-                                                CurrentValue = 1
-                                            },
-                                        },
-                                    }
-                                },
-                                new EntityComponentPb
-                                {
-                                    ConcomitantsComponentPb = new ConcomitantsComponentPb
-                                    {
-                                        CustomEntityIds = {1},
-                                    },
-                                }
-                            },
-                        }
-                    }
-                },
-                TimeInfo = new SceneTimeInfo
-                {
-                    Hour = 23
-                },
-                PlayerInfos =
-                {
-                    new ScenePlayerInformation
-                    {
-                        PlayerId = player.Id,
-                        Level = 1,
-                        IsOffline = false,
-                        Location = new()
-                        {
-                            X = 4000,
-                            Y = -2000,
-                            Z = 260
-                        },
-                        FightRoleInfos =
-                        {
-                            new FightRoleInformation
-                            {
-                                EntityId = 1,
-                                CurHp = 1000,
-                                MaxHp = 1000,
-                                IsControl = true,
-                                RoleId = player.CharacterId,
-                                RoleLevel = 1,
-                            }
-                        },
-                        PlayerName = player.Name
-                    }
-                },
-                CurContextId = player.Id
-            }
-        });
-    }
-
-    [NetEvent(MessageId.EntityActiveRequest)]
-    public ResponseMessage OnEntityActiveRequest() => Response(MessageId.EntityActiveResponse, new EntityActiveResponse());
 
     [NetEvent(MessageId.EntityOnLandedRequest)]
     public ResponseMessage OnEntityOnLandedRequest() => Response(MessageId.EntityOnLandedResponse, new EntityOnLandedResponse());
@@ -204,9 +27,6 @@ internal class WorldController : Controller
     [NetEvent(MessageId.EntityLoadCompleteRequest)]
     public ResponseMessage OnEntityLoadCompleteRequest() => Response(MessageId.EntityLoadCompleteResponse, new EntityLoadCompleteResponse());
 
-    [NetEvent(MessageId.SceneLoadingFinishRequest)]
-    public ResponseMessage OnSceneLoadingFinishRequest() => Response(MessageId.SceneLoadingFinishResponse, new SceneLoadingFinishResponse());
-
     [NetEvent(MessageId.UpdateSceneDateRequest)]
     public ResponseMessage OnUpdateSceneDateRequest() => Response(MessageId.UpdateSceneDateResponse, new UpdateSceneDateResponse());
 }

GameServer/Models/CreatureModel.cs

@@ -0,0 +1,26 @@
+namespace GameServer.Models;
+internal class CreatureModel
+{
+    public int OwnerId { get; }
+
+    public int InstanceId { get; private set; }
+    public bool LoadingWorld { get; private set; }
+
+    public long PlayerEntityId { get; set; }
+
+    public CreatureModel(int ownerId)
+    {
+        OwnerId = ownerId;
+    }
+
+    public void SetSceneLoadingData(int instanceId)
+    {
+        InstanceId = instanceId;
+        LoadingWorld = true;
+    }
+
+    public void OnWorldDone()
+    {
+        LoadingWorld = false;
+    }
+}

GameServer/Models/ModelManager.cs

@@ -1,16 +1,20 @@
 using GameServer.Controllers.Attributes;
-using GameServer.Controllers.Event;
+using GameServer.Systems.Event;
 
 namespace GameServer.Models;
 internal class ModelManager
 {
     private PlayerModel? _playerModel;
+    private CreatureModel? _creatureModel;
 
     [GameEvent(GameEventType.Login)]
     public void OnLogin()
     {
         _playerModel = PlayerModel.CreateDefaultPlayer();
+        _creatureModel = new CreatureModel(_playerModel.Id);
     }
 
     public PlayerModel Player => _playerModel ?? throw new InvalidOperationException($"Trying to access {nameof(PlayerModel)} instance before initialization!");
+
+    public CreatureModel Creature => _creatureModel ?? throw new InvalidOperationException($"Trying to access {nameof(CreatureModel)} instance before initialization!");
 }

GameServer/Program.cs

@@ -1,5 +1,4 @@
-using GameServer.Controllers.Event;
+using GameServer.Controllers.Factory;
-using GameServer.Controllers.Factory;
 using GameServer.Controllers.Manager;
 using GameServer.Extensions;
 using GameServer.Models;
@@ -7,6 +6,8 @@ using GameServer.Network;
 using GameServer.Network.Kcp;
 using GameServer.Network.Messages;
 using GameServer.Network.Rpc;
+using GameServer.Systems.Entity;
+using GameServer.Systems.Event;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
@@ -25,7 +26,8 @@ internal static class Program
                         .AddScoped<MessageManager>().AddSingleton<EventHandlerFactory>()
                         .AddScoped<RpcManager>().AddScoped<IRpcEndPoint, RpcSessionEndPoint>()
                         .AddSingleton<SessionManager>()
-                        .AddScoped<EventSystem>().AddScoped<ModelManager>().AddScoped<ControllerManager>()
+                        .AddScoped<EventSystem>().AddScoped<EntitySystem>().AddScoped<EntityFactory>()
+                        .AddScoped<ModelManager>().AddScoped<ControllerManager>()
                         .AddHostedService<WWGameServer>();
 
         await builder.Build().RunAsync();

GameServer/Systems/Entity/Component/EntityAttributeComponent.cs

@@ -0,0 +1,72 @@
+using Protocol;
+
+namespace GameServer.Systems.Entity.Component;
+internal class EntityAttributeComponent : EntityComponentBase
+{
+    public override EntityComponentType Type => EntityComponentType.Attribute;
+
+    private readonly Dictionary<EAttributeType, GameplayAttributeData> _gameplayAttributes;
+
+    public EntityAttributeComponent()
+    {
+        _gameplayAttributes = [];
+    }
+
+    public void SetAttribute(EAttributeType type, int currentValue, int baseValue)
+    {
+        if (!_gameplayAttributes.TryGetValue(type, out GameplayAttributeData? attribute))
+        {
+            attribute = new GameplayAttributeData
+            {
+                AttributeType = (int)type
+            };
+
+            _gameplayAttributes.Add(type, attribute);
+        }
+
+        attribute.CurrentValue = currentValue;
+        attribute.BaseValue = baseValue;
+    }
+
+    public void SetAttribute(EAttributeType type, int currentValue)
+    {
+        if (!_gameplayAttributes.TryGetValue(type, out GameplayAttributeData? attribute))
+        {
+            SetAttribute(type, currentValue, currentValue);
+            return;
+        }
+
+        attribute.CurrentValue = currentValue;
+    }
+
+    public int GetAttribute(EAttributeType type)
+    {
+        if (_gameplayAttributes.TryGetValue(type, out GameplayAttributeData? attribute))
+            return attribute.CurrentValue;
+
+        return 0;
+    }
+
+    public int GetAttributeBase(EAttributeType type)
+    {
+        if (_gameplayAttributes.TryGetValue(type, out GameplayAttributeData? attribute))
+            return attribute.BaseValue;
+
+        return 0;
+    }
+
+    public override EntityComponentPb Pb
+    {
+        get
+        {
+            EntityComponentPb pb = new()
+            {
+                AttributeComponent = new()
+            };
+
+            pb.AttributeComponent.GameAttributes.AddRange(_gameplayAttributes.Values);
+
+            return pb;
+        }
+    }
+}

GameServer/Systems/Entity/Component/EntityComponentBase.cs

@@ -0,0 +1,8 @@
+using Protocol;
+
+namespace GameServer.Systems.Entity.Component;
+internal abstract class EntityComponentBase
+{
+    public abstract EntityComponentType Type { get; }
+    public abstract EntityComponentPb Pb { get; }
+}

GameServer/Systems/Entity/Component/EntityComponentSystem.cs

@@ -0,0 +1,34 @@
+using Protocol;
+
+namespace GameServer.Systems.Entity.Component;
+internal class EntityComponentSystem
+{
+    private readonly List<EntityComponentBase> _components;
+
+    public EntityComponentSystem()
+    {
+        _components = [];
+    }
+
+    public TEntityComponent Create<TEntityComponent>() where TEntityComponent : EntityComponentBase, new()
+    {
+        if (_components.Any(component => component is TEntityComponent)) throw new InvalidOperationException($"Component of type {nameof(TEntityComponent)} already exists");
+
+        TEntityComponent component = new();
+        _components.Add(component);
+
+        return component;
+    }
+
+    public TEntityComponent Get<TEntityComponent>() where TEntityComponent : EntityComponentBase
+    {
+        return (_components.Single(component => component is TEntityComponent) as TEntityComponent)!;
+    }
+
+    public bool TryGet<TEntityComponent>(out TEntityComponent? component) where TEntityComponent : EntityComponentBase
+    {
+        return (component = _components.SingleOrDefault(component => component is TEntityComponent) as TEntityComponent) != null;
+    }
+
+    public IEnumerable<EntityComponentPb> Pb => _components.Select(component => component.Pb);
+}

GameServer/Systems/Entity/Component/EntityComponentType.cs

@@ -0,0 +1,37 @@
+namespace GameServer.Systems.Entity.Component;
+internal enum EntityComponentType
+{
+    Attribute,
+    Tag,
+    Trigger,
+    Summoner,
+    Part,
+    VisionSkill,
+    AnimationState,
+    BlackboardParam,
+    SysBuff,
+    ClientData,
+    MonsterWeapon,
+    MonsterAi,
+    FightBuff,
+    NearbyTracking,
+    Drop,
+    MonsterCapture,
+    LogicState,
+    Advice,
+    Lift,
+    Interact,
+    Equip,
+    BeControlled,
+    Concomitants,
+    TimelineTrack,
+    Summons,
+    EntityFsm,
+    Board,
+    PlacementItem,
+    StateTag,
+    MonsterGachaData,
+    Fan,
+    Npc,
+    Bubble
+}

GameServer/Systems/Entity/Component/EntityConcomitantsComponent.cs

@@ -0,0 +1,28 @@
+using Protocol;
+
+namespace GameServer.Systems.Entity.Component;
+internal class EntityConcomitantsComponent : EntityComponentBase
+{
+    public List<long> CustomEntityIds { get; }
+
+    public EntityConcomitantsComponent()
+    {
+        CustomEntityIds = [];
+    }
+
+    public override EntityComponentType Type => EntityComponentType.Concomitants;
+
+    public override EntityComponentPb Pb
+    {
+        get
+        {
+            EntityComponentPb pb = new()
+            {
+                ConcomitantsComponentPb = new()
+            };
+
+            pb.ConcomitantsComponentPb.CustomEntityIds.AddRange(CustomEntityIds);
+            return pb;
+        }
+    }
+}

GameServer/Systems/Entity/Component/EntityVisionSkillComponent.cs

@@ -0,0 +1,37 @@
+using Protocol;
+
+namespace GameServer.Systems.Entity.Component;
+internal class EntityVisionSkillComponent : EntityComponentBase
+{
+    public List<VisionSkillInformation> Skills { get; }
+
+    public EntityVisionSkillComponent()
+    {
+        Skills = [];
+    }
+
+    public void SetExploreTool(int toolId)
+    {
+        Skills.Clear();
+        Skills.Add(new VisionSkillInformation
+        {
+            SkillId = toolId
+        });
+    }
+
+    public override EntityComponentType Type => EntityComponentType.VisionSkill;
+
+    public override EntityComponentPb Pb
+    {
+        get
+        {
+            EntityComponentPb pb = new()
+            {
+                VisionSkillComponent = new VisionSkillComponentPb()
+            };
+
+            pb.VisionSkillComponent.VisionSkillInfos.AddRange(Skills);
+            return pb;
+        }
+    }
+}

GameServer/Systems/Entity/EntityBase.cs

@@ -0,0 +1,49 @@
+using GameServer.Systems.Entity.Component;
+using Protocol;
+
+namespace GameServer.Systems.Entity;
+internal abstract class EntityBase
+{
+    public long Id { get; }
+    public EntityComponentSystem ComponentSystem { get; }
+
+    public Vector Pos { get; set; }
+    public Rotator Rot { get; set; }
+
+    public bool Active { get; set; }
+
+    public EntityState State { get; protected set; }
+
+    public EntityBase(long id)
+    {
+        Id = id;
+
+        Pos = new Vector();
+        Rot = new Rotator();
+
+        ComponentSystem = new EntityComponentSystem();
+    }
+
+    public virtual void OnCreate()
+    {
+        State = EntityState.Born;
+    }
+
+    public void Activate()
+    {
+        AddComponents();
+    }
+
+    public virtual void AddComponents()
+    {
+        // AddComponents.
+    }
+
+    public virtual LivingStatus LivingStatus => LivingStatus.Alive;
+    public virtual bool IsVisible => true;
+
+    public abstract EEntityType Type { get; }
+    public abstract EntityConfigType ConfigType { get; }
+
+    public abstract EntityPb Pb { get; }
+}

GameServer/Systems/Entity/EntityFactory.cs

@@ -0,0 +1,10 @@
+namespace GameServer.Systems.Entity;
+internal class EntityFactory
+{
+    private long _entityIdCounter;
+
+    public PlayerEntity CreatePlayer(int characterConfigId, int playerId)
+        => new(NextId(), characterConfigId, playerId);
+
+    private long NextId() => Interlocked.Increment(ref _entityIdCounter);
+}

GameServer/Systems/Entity/EntitySystem.cs

@@ -0,0 +1,38 @@
+using Protocol;
+
+namespace GameServer.Systems.Entity;
+internal class EntitySystem
+{
+    private readonly List<EntityBase> _entities;
+
+    public EntitySystem()
+    {
+        _entities = [];
+    }
+
+    public IEnumerable<EntityBase> EnumerateEntities()
+    {
+        return _entities;
+    }
+
+    public void Create(EntityBase entity)
+    {
+        if (_entities.Any(e => e.Id == entity.Id)) 
+            throw new InvalidOperationException($"EntitySystem::Create - entity with id {entity.Id} already exists");
+
+        entity.OnCreate();
+        _entities.Add(entity);
+    }
+
+    public void Activate(EntityBase entity)
+    {
+        entity.Activate();
+    }
+
+    public TEntity? Get<TEntity>(long id) where TEntity : EntityBase
+    {
+        return _entities.SingleOrDefault(e => e.Id == id) as TEntity;
+    }
+
+    public IEnumerable<EntityPb> Pb => _entities.Select(e => e.Pb);
+}

GameServer/Systems/Entity/PlayerEntity.cs

@@ -0,0 +1,66 @@
+using GameServer.Systems.Entity.Component;
+using Protocol;
+
+namespace GameServer.Systems.Entity;
+internal class PlayerEntity : EntityBase
+{
+    public PlayerEntity(long id, int configId, int playerId) : base(id)
+    {
+        ConfigId = configId;
+        PlayerId = playerId;
+    }
+
+    public int ConfigId { get; }
+    public int PlayerId { get; }
+
+    public override void AddComponents()
+    {
+        base.AddComponents();
+
+        EntityConcomitantsComponent concomitantsComponent = ComponentSystem.Create<EntityConcomitantsComponent>();
+        concomitantsComponent.CustomEntityIds.Add(Id);
+
+        EntityVisionSkillComponent visionSkillComponent = ComponentSystem.Create<EntityVisionSkillComponent>();
+        visionSkillComponent.SetExploreTool(1001);
+
+        _ = ComponentSystem.Create<EntityAttributeComponent>();
+        InitAttributes();
+    }
+
+    private void InitAttributes()
+    {
+        EntityAttributeComponent attributeComponent = ComponentSystem.Get<EntityAttributeComponent>();
+        attributeComponent.SetAttribute(EAttributeType.Life, 1000);
+        attributeComponent.SetAttribute(EAttributeType.LifeMax, 1000);
+        attributeComponent.SetAttribute(EAttributeType.Lv, 1);
+    }
+
+    public override EEntityType Type => EEntityType.Player;
+    public override EntityConfigType ConfigType => EntityConfigType.Character;
+
+    public override EntityPb Pb
+    {
+        get
+        {
+            EntityPb pb = new()
+            {
+                Id = Id,
+                EntityType = (int)Type,
+                ConfigType = (int)ConfigType,
+                EntityState = (int)State,
+                ConfigId = ConfigId,
+                Pos = Pos,
+                Rot = Rot,
+                PlayerId = PlayerId,
+                LivingStatus = (int)LivingStatus,
+                IsVisible = IsVisible,
+                InitLinearVelocity = new(),
+                InitPos = new()
+            };
+
+            pb.ComponentPbs.AddRange(ComponentSystem.Pb);
+
+            return pb;
+        }
+    }
+}

GameServer/Systems/Event/EventSystem.cs

@@ -6,7 +6,7 @@ using GameServer.Controllers.Manager;
 using GameServer.Models;
 using Microsoft.Extensions.Logging;
 
-namespace GameServer.Controllers.Event;
+namespace GameServer.Systems.Event;
 internal class EventSystem
 {
     private static readonly ImmutableDictionary<GameEventType, Func<ModelManager, Task>> s_modelManagerEventHandlers = RegisterModelManagerEvents();

GameServer/Systems/Event/GameEventType.cs

@@ -0,0 +1,9 @@
+namespace GameServer.Systems.Event;
+internal enum GameEventType
+{
+    Login = 1,
+    EnterGame,
+
+    // Actions
+    VisionSkillChanged
+}