Checkpoint 3 & Checkpoint 4：

- GameStateBattle 接入 Simulation 主更新入口
- SimulationWorld 增加开关 UseSimulationMovement（默认 false）
- SimulationWorld.Tick(...) 现在在开关开启时执行敌人追踪/移动模拟，基本还原 MovementComponent 功能（敌人互斥）
- 调整 IEnemySeparationSolver 系列方法，不再依赖 MovementComponent

Assets/GameMain/Entities/MeleeEnemy.prefab

@@ -151,7 +151,10 @@ MonoBehaviour:
   m_EditorClassIdentifier: 
   _isMoving: 0
   _direction: {x: 0, y: 0, z: 0}
-  _cachedTransform: {fileID: 0}
+  _cachedTransform: {fileID: 7683855655592166216}
+  _avoidEnemyOverlap: 0
+  _enemyBodyRadius: 0.45
+  _separationIterations: 2
   _speedBase: 0
 --- !u!114 &6353753365317756414
 MonoBehaviour:

Assets/GameMain/Entities/Player.prefab

@@ -191,8 +191,8 @@ Camera:
   near clip plane: 0.3
   far clip plane: 100
   field of view: 80
-  orthographic: 0
+  orthographic: 1
-  orthographic size: 5
+  orthographic size: 15
   m_Depth: 0
   m_CullingMask:
     serializedVersion: 2

Assets/GameMain/Scripts/Components/MovementComponent.cs

@@ -18,6 +18,9 @@ namespace Components
         [SerializeField] private int _separationIterations = 2;
 
         public float Speed => (_speedBase + _movementStat.Value) * _movementStat.Percent;
+        public bool AvoidEnemyOverlap => _avoidEnemyOverlap;
+        public float EnemyBodyRadius => _enemyBodyRadius;
+        public int SeparationIterations => _separationIterations;
         [SerializeField] private float _speedBase;
 
         private StatComponent _statComponent;
@@ -61,6 +64,8 @@ namespace Components
 
         public void OnReset()
         {
+            Transform transformToUnregister = _cachedTransform;
+
             _speedBase = 0;
             _cachedTransform = null;
             _direction = Vector3.zero;
@@ -77,7 +82,7 @@ namespace Components
 
             _statComponent = null;
 
-            UnregisterEnemyMover();
+            UnregisterEnemyMover(transformToUnregister);
         }
 
         private void Move(float deltaTime = 0)
@@ -91,7 +96,7 @@ namespace Components
                 if (_avoidEnemyOverlap)
                 {
                     nextPosition = EnemySeparationSolverProvider.Resolve(
-                        this,
+                        _cachedTransform,
                         nextPosition,
                         _direction,
                         _separationIterations);
@@ -108,12 +113,12 @@ namespace Components
         {
             UnregisterEnemyMover();
             if (!_avoidEnemyOverlap) return;
-            EnemySeparationSolverProvider.Register(this, _cachedTransform, _enemyBodyRadius);
+            EnemySeparationSolverProvider.Register(_cachedTransform, _enemyBodyRadius);
         }
 
-        private void UnregisterEnemyMover()
+        private void UnregisterEnemyMover(Transform transform = null)
         {
-            EnemySeparationSolverProvider.Unregister(this);
+            EnemySeparationSolverProvider.Unregister(transform ?? _cachedTransform);
         }
     }
 }

Assets/GameMain/Scripts/CustomComponent/EnemyManager/EnemyManagerComponent.cs

@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using Components;
 using DataTable;
 using Definition.Enum;
 using Entity;
@@ -252,6 +253,8 @@ namespace CustomComponent
 
         private static EnemySimData CreateEnemySimData(EnemyBase enemy, EnemyData enemyData)
         {
+            MovementComponent movementComponent = enemy != null ? enemy.GetComponent<MovementComponent>() : null;
+
             return new EnemySimData
             {
                 EntityId = enemy.Id,
@@ -259,6 +262,9 @@ namespace CustomComponent
                 Forward = enemy.CachedTransform.forward,
                 Speed = enemyData != null ? enemyData.SpeedBase : 0f,
                 AttackRange = 1f,
+                AvoidEnemyOverlap = movementComponent != null && movementComponent.AvoidEnemyOverlap,
+                EnemyBodyRadius = movementComponent != null ? movementComponent.EnemyBodyRadius : 0.45f,
+                SeparationIterations = movementComponent != null ? movementComponent.SeparationIterations : 2,
                 TargetType = 0,
                 State = 0
             };

Assets/GameMain/Scripts/Entity/EntityLogic/Enemy/EnemyBase.cs

@@ -9,4 +9,10 @@ public abstract class EnemyBase : TargetableObject
     public abstract override ImpactData GetImpactData();
 
     public virtual void SetTarget(Transform target) => _target = target;
-}
+
+    protected bool IsSimulationMovementEnabled()
+    {
+        var simulationWorld = GameEntry.SimulationWorld;
+        return simulationWorld != null && simulationWorld.UseSimulationMovement;
+    }
+}

Assets/GameMain/Scripts/Entity/EntityLogic/Enemy/MeleeEnemy.cs

@@ -54,6 +54,11 @@ namespace Entity
 
         protected override void OnUpdate(float elapseSeconds, float realElapseSeconds)
         {
+            if (IsSimulationMovementEnabled())
+            {
+                return;
+            }
+
             base.OnUpdate(elapseSeconds, realElapseSeconds);
 
             if (_target == null)

Assets/GameMain/Scripts/Entity/EntityLogic/Enemy/RemoteEnemy.cs

@@ -50,6 +50,11 @@ namespace Entity
 
         protected override void OnUpdate(float elapseSeconds, float realElapseSeconds)
         {
+            if (IsSimulationMovementEnabled())
+            {
+                return;
+            }
+
             base.OnUpdate(elapseSeconds, realElapseSeconds);
 
             if (_target == null)

Assets/GameMain/Scripts/Procedure/Game/GameStateBattle.cs

@@ -5,7 +5,8 @@ using DataTable;
 using Entity;
 using GameFramework.Fsm;
 using GameFramework.Procedure;
-using UnityGameFramework.Runtime;
+using Simulation;
+using UnityEngine;
 
 namespace Procedure
 {
@@ -13,15 +14,15 @@ namespace Procedure
     {
         public override GameStateType GameStateType => GameStateType.Battle;
 
-        private EnemyManagerComponent _enemyManager = null;
+        private EnemyManagerComponent _enemyManager;
 
-        private int _currentLevel = 0;
+        private int _currentLevel;
 
-        private float _levelTimeLeft = 0;
+        private float _levelTimeLeft;
 
         private Player Player => _procedureGame.Player;
 
-        private ProcedureGame _procedureGame = null;
+        private ProcedureGame _procedureGame;
 
         public void AddBattleDuration(float seconds)
         {
@@ -65,6 +66,13 @@ namespace Procedure
 
             _enemyManager.OnUpdate(elapseSeconds, realElapseSeconds);
 
+            SimulationWorld simulationWorld = GameEntry.SimulationWorld;
+            if (simulationWorld != null)
+            {
+                Vector3 playerPosition = Player != null ? Player.CachedTransform.position : Vector3.zero;
+                simulationWorld.Tick(new SimulationTickContext(elapseSeconds, realElapseSeconds, playerPosition));
+            }
+
             _levelTimeLeft -= elapseSeconds;
             GameEntry.Event.Fire(this, LevelProcessEventArgs.Create((int)_levelTimeLeft));
         }

Assets/GameMain/Scripts/Simulation/EnemySimData.cs

@@ -9,6 +9,9 @@ namespace Simulation
         public Vector3 Forward;
         public float Speed;
         public float AttackRange;
+        public bool AvoidEnemyOverlap;
+        public float EnemyBodyRadius;
+        public int SeparationIterations;
         public int TargetType;
         public int State;
     }

Assets/GameMain/Scripts/Simulation/SimulationWorld.cs

@@ -1,10 +1,20 @@
 using System.Collections.Generic;
+using CustomUtility;
+using Entity;
+using UnityEngine;
 using UnityGameFramework.Runtime;
 
 namespace Simulation
 {
     public sealed class SimulationWorld : GameFrameworkComponent
     {
+        private const float DefaultAttackRange = 1f;
+        private const int EnemyStateIdle = 0;
+        private const int EnemyStateChasing = 1;
+        private const int EnemyStateInAttackRange = 2;
+
+        [SerializeField] private bool _useSimulationMovement;
+
         private readonly List<EnemySimData> _enemies = new List<EnemySimData>();
         private readonly List<ProjectileSimData> _projectiles = new List<ProjectileSimData>();
         private readonly List<PickupSimData> _pickups = new List<PickupSimData>();
@@ -16,6 +26,12 @@ namespace Simulation
         public IReadOnlyList<EnemySimData> Enemies => _enemies;
         public IReadOnlyList<ProjectileSimData> Projectiles => _projectiles;
         public IReadOnlyList<PickupSimData> Pickups => _pickups;
+        public bool UseSimulationMovement => _useSimulationMovement;
+
+        public void SetUseSimulationMovement(bool enabled)
+        {
+            _useSimulationMovement = enabled;
+        }
 
         public int AddEnemy(in EnemySimData simData)
         {
@@ -136,7 +152,12 @@ namespace Simulation
 
         public void Tick(in SimulationTickContext context)
         {
-            _ = context;
+            if (!_useSimulationMovement)
+            {
+                return;
+            }
+
+            TickEnemies(in context);
         }
 
         public void Clear()
@@ -149,5 +170,91 @@ namespace Simulation
             ProjectileBinding.Clear();
             PickupBinding.Clear();
         }
+
+        private void TickEnemies(in SimulationTickContext context)
+        {
+            if (_enemies.Count == 0 || context.DeltaTime <= 0f)
+            {
+                return;
+            }
+
+            Vector3 playerPosition = context.PlayerPosition;
+            playerPosition.y = 0f;
+            EntityComponent entityComponent = GameEntry.Entity;
+
+            for (int i = 0; i < _enemies.Count; i++)
+            {
+                EnemySimData enemy = _enemies[i];
+                EnemyBase enemyEntity = null;
+                Transform enemyTransform = null;
+
+                if (entityComponent != null &&
+                    entityComponent.GetGameEntity(enemy.EntityId) is EnemyBase runtimeEnemy &&
+                    runtimeEnemy.Available)
+                {
+                    enemyEntity = runtimeEnemy;
+                    enemyTransform = runtimeEnemy.CachedTransform;
+                }
+
+                Vector3 currentPosition = enemy.Position;
+                currentPosition.y = 0f;
+
+                Vector3 toPlayer = playerPosition - currentPosition;
+                float sqrDistance = toPlayer.sqrMagnitude;
+                float attackRange = enemy.AttackRange > 0f ? enemy.AttackRange : DefaultAttackRange;
+                float attackRangeSqr = attackRange * attackRange;
+
+                if (sqrDistance <= attackRangeSqr)
+                {
+                    enemy.State = EnemyStateInAttackRange;
+                }
+                else if (enemy.Speed <= 0f || sqrDistance <= float.Epsilon)
+                {
+                    enemy.State = EnemyStateIdle;
+                }
+                else
+                {
+                    Vector3 forward = toPlayer.normalized;
+                    enemy.Forward = forward;
+                    Vector3 desiredPosition = enemy.Position + forward * enemy.Speed * context.DeltaTime;
+                    if (enemy.AvoidEnemyOverlap && enemyTransform != null)
+                    {
+                        int separationIterations = enemy.SeparationIterations > 0 ? enemy.SeparationIterations : 1;
+                        desiredPosition = EnemySeparationSolverProvider.Resolve(
+                            enemyTransform,
+                            desiredPosition,
+                            forward,
+                            separationIterations);
+                    }
+
+                    enemy.Position = desiredPosition;
+                    enemy.State = EnemyStateChasing;
+                }
+
+                _enemies[i] = enemy;
+
+                if (enemyEntity != null)
+                {
+                    ApplyEnemyPresentation(enemyEntity, enemy);
+                }
+            }
+        }
+
+        private static void ApplyEnemyPresentation(EnemyBase enemyEntity, in EnemySimData enemyData)
+        {
+            if (enemyEntity == null || !enemyEntity.Available)
+            {
+                return;
+            }
+
+            enemyEntity.CachedTransform.position = enemyData.Position;
+
+            Vector3 forward = enemyData.Forward;
+            forward.y = 0f;
+            if (forward.sqrMagnitude > float.Epsilon)
+            {
+                enemyEntity.CachedTransform.forward = forward.normalized;
+            }
+        }
     }
 }

Assets/GameMain/Scripts/Utility/EnemySeperator/EnemySeparationSolverProvider.cs

@@ -1,6 +1,5 @@
 
 using System.Collections.Generic;
-using Components;
 using UnityEngine;
 
 namespace CustomUtility
@@ -9,12 +8,11 @@ namespace CustomUtility
     {
         private struct Registration
         {
-            public Transform Transform;
             public float BodyRadius;
         }
 
         private static IEnemySeparationSolver _current = new GridBucketEnemySeparationSolver();
-        private static readonly Dictionary<MovementComponent, Registration> Registrations = new();
+        private static readonly Dictionary<Transform, Registration> Registrations = new();
 
         public static IEnemySeparationSolver Current => _current;
         public static string CurrentSolverName => _current.GetType().Name;
@@ -36,42 +34,41 @@ namespace CustomUtility
             SetSolver(new NaiveEnemySeparationSolver());
         }
 
-        public static void Register(MovementComponent mover, Transform transform, float bodyRadius)
+        public static void Register(Transform transform, float bodyRadius)
         {
-            if (mover == null || transform == null) return;
+            if (transform == null) return;
 
             var registration = new Registration
             {
-                Transform = transform,
                 BodyRadius = bodyRadius
             };
-            Registrations[mover] = registration;
+            Registrations[transform] = registration;
-            _current.Register(mover, transform, bodyRadius);
+            _current.Register(transform, bodyRadius);
         }
 
-        public static void Unregister(MovementComponent mover)
+        public static void Unregister(Transform transform)
         {
-            if (mover == null) return;
+            if (transform == null) return;
 
-            _current.Unregister(mover);
+            _current.Unregister(transform);
-            Registrations.Remove(mover);
+            Registrations.Remove(transform);
         }
 
-        public static Vector3 Resolve(MovementComponent mover, Vector3 desiredPosition, Vector3 fallbackDirection,
+        public static Vector3 Resolve(Transform transform, Vector3 desiredPosition, Vector3 fallbackDirection,
             int iterations)
         {
-            return _current.Resolve(mover, desiredPosition, fallbackDirection, iterations);
+            return _current.Resolve(transform, desiredPosition, fallbackDirection, iterations);
         }
 
         private static void ReRegisterAll()
         {
             foreach (var pair in Registrations)
             {
-                MovementComponent mover = pair.Key;
+                Transform transform = pair.Key;
                 Registration registration = pair.Value;
-                if (mover == null || registration.Transform == null) continue;
+                if (transform == null) continue;
 
-                _current.Register(mover, registration.Transform, registration.BodyRadius);
+                _current.Register(transform, registration.BodyRadius);
             }
         }
     }    

Assets/GameMain/Scripts/Utility/EnemySeperator/GridBucketEnemySeparationSolver.cs

@@ -1,4 +1,3 @@
-using Components;
 using UnityEngine;
 
 namespace CustomUtility
@@ -14,12 +13,12 @@ namespace CustomUtility
             public int CellZ;
         }
 
-        private readonly System.Collections.Generic.Dictionary<MovementComponent, Agent> _agents = new();
+        private readonly System.Collections.Generic.Dictionary<Transform, Agent> _agents = new();
 
-        private readonly System.Collections.Generic.Dictionary<long, System.Collections.Generic.List<MovementComponent>>
+        private readonly System.Collections.Generic.Dictionary<long, System.Collections.Generic.List<Transform>>
             _buckets = new();
 
-        private readonly System.Collections.Generic.List<MovementComponent> _recycle = new();
+        private readonly System.Collections.Generic.List<Transform> _recycle = new();
         private readonly float _cellSize;
 
         private int _snapshotFrame = -1;
@@ -30,14 +29,14 @@ namespace CustomUtility
             _cellSize = Mathf.Max(0.1f, cellSize);
         }
 
-        public void Register(MovementComponent mover, Transform transform, float bodyRadius)
+        public void Register(Transform transform, float bodyRadius)
         {
-            if (mover == null || transform == null) return;
+            if (transform == null) return;
 
-            if (!_agents.TryGetValue(mover, out var agent))
+            if (!_agents.TryGetValue(transform, out var agent))
             {
                 agent = new Agent();
-                _agents.Add(mover, agent);
+                _agents.Add(transform, agent);
             }
 
             agent.Transform = transform;
@@ -50,22 +49,22 @@ namespace CustomUtility
             _snapshotFrame = -1;
         }
 
-        public void Unregister(MovementComponent mover)
+        public void Unregister(Transform transform)
         {
-            if (mover == null) return;
+            if (transform == null) return;
-            if (!_agents.TryGetValue(mover, out var agent)) return;
+            if (!_agents.TryGetValue(transform, out var agent)) return;
 
-            RemoveFromBucket(mover, agent.CellX, agent.CellZ);
+            RemoveFromBucket(transform, agent.CellX, agent.CellZ);
-            _agents.Remove(mover);
+            _agents.Remove(transform);
             RecalculateMaxRadius();
             _snapshotFrame = -1;
         }
 
-        public Vector3 Resolve(MovementComponent mover, Vector3 desiredPosition, Vector3 fallbackDirection,
+        public Vector3 Resolve(Transform transform, Vector3 desiredPosition, Vector3 fallbackDirection,
             int iterations)
         {
-            if (mover == null) return desiredPosition;
+            if (transform == null) return desiredPosition;
-            if (!_agents.TryGetValue(mover, out var self)) return desiredPosition;
+            if (!_agents.TryGetValue(transform, out var self)) return desiredPosition;
 
             EnsureSnapshot();
 
@@ -90,9 +89,9 @@ namespace CustomUtility
 
                         for (int i = 0; i < bucket.Count; i++)
                         {
-                            MovementComponent otherMover = bucket[i];
+                            Transform otherTransform = bucket[i];
-                            if (otherMover == mover) continue;
+                            if (otherTransform == transform) continue;
-                            if (!_agents.TryGetValue(otherMover, out var other)) continue;
+                            if (!_agents.TryGetValue(otherTransform, out var other)) continue;
 
                             Vector3 toSelf = candidate - other.Position;
                             float minDistance = self.Radius + other.Radius;
@@ -115,7 +114,7 @@ namespace CustomUtility
                 }
             }
 
-            SyncAgentPosition(mover, self, candidate);
+            SyncAgentPosition(transform, self, candidate);
 
             candidate.y = desiredPosition.y;
             return candidate;
@@ -132,11 +131,11 @@ namespace CustomUtility
 
             foreach (var pair in _agents)
             {
-                MovementComponent mover = pair.Key;
+                Transform transform = pair.Key;
                 Agent agent = pair.Value;
-                if (mover == null || agent.Transform == null)
+                if (transform == null || agent.Transform == null)
                 {
-                    _recycle.Add(mover);
+                    _recycle.Add(transform);
                     continue;
                 }
 
@@ -146,7 +145,7 @@ namespace CustomUtility
 
                 agent.CellX = ToCell(position.x);
                 agent.CellZ = ToCell(position.z);
-                AddToBucket(mover, agent.CellX, agent.CellZ);
+                AddToBucket(transform, agent.CellX, agent.CellZ);
             }
 
             for (int i = 0; i < _recycle.Count; i++)
@@ -155,15 +154,15 @@ namespace CustomUtility
             }
         }
 
-        private void SyncAgentPosition(MovementComponent mover, Agent agent, Vector3 position)
+        private void SyncAgentPosition(Transform transform, Agent agent, Vector3 position)
         {
             int newCellX = ToCell(position.x);
             int newCellZ = ToCell(position.z);
 
             if (agent.CellX != newCellX || agent.CellZ != newCellZ)
             {
-                RemoveFromBucket(mover, agent.CellX, agent.CellZ);
+                RemoveFromBucket(transform, agent.CellX, agent.CellZ);
-                AddToBucket(mover, newCellX, newCellZ);
+                AddToBucket(transform, newCellX, newCellZ);
                 agent.CellX = newCellX;
                 agent.CellZ = newCellZ;
             }
@@ -171,24 +170,24 @@ namespace CustomUtility
             agent.Position = position;
         }
 
-        private void AddToBucket(MovementComponent mover, int cellX, int cellZ)
+        private void AddToBucket(Transform transform, int cellX, int cellZ)
         {
             long key = CellKey(cellX, cellZ);
             if (!_buckets.TryGetValue(key, out var list))
             {
-                list = new System.Collections.Generic.List<MovementComponent>(8);
+                list = new System.Collections.Generic.List<Transform>(8);
                 _buckets.Add(key, list);
             }
 
-            list.Add(mover);
+            list.Add(transform);
         }
 
-        private void RemoveFromBucket(MovementComponent mover, int cellX, int cellZ)
+        private void RemoveFromBucket(Transform transform, int cellX, int cellZ)
         {
             long key = CellKey(cellX, cellZ);
             if (!_buckets.TryGetValue(key, out var list)) return;
 
-            list.Remove(mover);
+            list.Remove(transform);
             if (list.Count == 0)
             {
                 _buckets.Remove(key);

Assets/GameMain/Scripts/Utility/EnemySeperator/IEnemySeparationSolver.cs

@@ -1,12 +1,11 @@
-using Components;
 using UnityEngine;
 
 namespace CustomUtility
 {
     public interface IEnemySeparationSolver
     {
-        void Register(MovementComponent mover, Transform transform, float bodyRadius);
+        void Register(Transform transform, float bodyRadius);
-        void Unregister(MovementComponent mover);
+        void Unregister(Transform transform);
-        Vector3 Resolve(MovementComponent mover, Vector3 desiredPosition, Vector3 fallbackDirection, int iterations);
+        Vector3 Resolve(Transform transform, Vector3 desiredPosition, Vector3 fallbackDirection, int iterations);
     }
-}
+}

Assets/GameMain/Scripts/Utility/EnemySeperator/NaiveEnemySeparationSolver.cs

@@ -1,4 +1,3 @@
-using Components;
 using UnityEngine;
 
 namespace CustomUtility
@@ -11,33 +10,33 @@ namespace CustomUtility
             public float Radius;
         }
 
-        private readonly System.Collections.Generic.Dictionary<MovementComponent, Agent> _agents = new();
+        private readonly System.Collections.Generic.Dictionary<Transform, Agent> _agents = new();
-        private readonly System.Collections.Generic.List<MovementComponent> _agentKeys = new();
+        private readonly System.Collections.Generic.List<Transform> _agentKeys = new();
 
-        public void Register(MovementComponent mover, Transform transform, float bodyRadius)
+        public void Register(Transform transform, float bodyRadius)
         {
-            if (mover == null || transform == null) return;
+            if (transform == null) return;
 
-            if (!_agents.TryGetValue(mover, out var agent))
+            if (!_agents.TryGetValue(transform, out var agent))
             {
                 agent = new Agent();
-                _agents.Add(mover, agent);
+                _agents.Add(transform, agent);
             }
 
             agent.Transform = transform;
             agent.Radius = Mathf.Max(0.01f, bodyRadius);
         }
 
-        public void Unregister(MovementComponent mover)
+        public void Unregister(Transform transform)
         {
-            if (mover == null) return;
+            if (transform == null) return;
-            _agents.Remove(mover);
+            _agents.Remove(transform);
         }
 
-        public Vector3 Resolve(MovementComponent mover, Vector3 desiredPosition, Vector3 fallbackDirection, int iterations)
+        public Vector3 Resolve(Transform transform, Vector3 desiredPosition, Vector3 fallbackDirection, int iterations)
         {
-            if (mover == null) return desiredPosition;
+            if (transform == null) return desiredPosition;
-            if (!_agents.TryGetValue(mover, out var self)) return desiredPosition;
+            if (!_agents.TryGetValue(transform, out var self)) return desiredPosition;
 
             Vector3 candidate = desiredPosition;
             candidate.y = 0f;
@@ -56,9 +55,9 @@ namespace CustomUtility
             {
                 for (int i = 0; i < _agentKeys.Count; i++)
                 {
-                    MovementComponent otherMover = _agentKeys[i];
+                    Transform otherTransform = _agentKeys[i];
-                    if (otherMover == mover) continue;
+                    if (otherTransform == transform) continue;
-                    if (!_agents.TryGetValue(otherMover, out var other)) continue;
+                    if (!_agents.TryGetValue(otherTransform, out var other)) continue;
                     if (other.Transform == null) continue;
 
                     Vector3 otherPosition = other.Transform.position;

docs/TodoList.md

@@ -37,13 +37,13 @@
   - `EnemyManagerComponent` 继续负责刷怪与实体显隐，不改外部调用方式。
   - 完成标准：敌人数量统计与当前一致，无重复注册、无悬空索引。
 
-- [ ] Checkpoint 3：建立 Simulation 主更新入口并接入 Battle 状态
+- [x] Checkpoint 3：建立 Simulation 主更新入口并接入 Battle 状态
   - 在 `GameStateBattle.OnUpdate` 中增加 `SimulationWorld.Tick(...)` 调用。
   - 先只接“敌人移动/追踪”系统，其他逻辑保持原路径。
   - 增加开关（建议 `UseSimulationMovement`）用于 A/B 对比与回滚。
   - 完成标准：关闭开关与当前行为一致；开启开关后敌人仍能正常追踪玩家。
 
-- [ ] Checkpoint 4：迁移敌人核心移动逻辑到 Simulation（去 MonoBehaviour 核心逻辑）
+- [x] Checkpoint 4：迁移敌人核心移动逻辑到 Simulation（去 MonoBehaviour 核心逻辑）
   - 将 `MeleeEnemy/RemoteEnemy` 的目标追踪、移动方向、攻击距离判定迁至 Simulation。
   - `EnemySimData` 至少包含：`position`、`forward`、`speed`、`attackRange`、`targetType`、`state`。
   - `MeleeEnemy/RemoteEnemy.OnUpdate` 仅保留表现层或空实现（不再做核心移动计算）。