- Checkpoint 1：清理 TickEnemies 侧 GC

- Checkpoint 2：解耦 Simulation 核心与 `Transform` 运行时依赖 - Checkpoint 3：收口 `EntitySync` 职责边界 - Checkpoint 4：拆分 Simulation Tick 阶段 - Checkpoint 5：补最小回归测试 - Checkpoint 6：补充 P1.5 结项文档
2026-02-21 13:39:14 +08:00
parent 200277a703
commit d55ead69a0
28 changed files with 1390 additions and 257 deletions
@@ -5,6 +5,10 @@ namespace CustomDebugger
    public static class CustomProfilerMarker
    {
        public static readonly ProfilerMarker TickEnemies = new ProfilerMarker("TickEnemies"); 
+        public static readonly ProfilerMarker TickEnemies_BuildInput = new ProfilerMarker("TickEnemies.BuildInput");
+        public static readonly ProfilerMarker TickEnemies_MoveSeparation = new ProfilerMarker("TickEnemies.MoveSeparation");
+        public static readonly ProfilerMarker TickEnemies_StateUpdate = new ProfilerMarker("TickEnemies.StateUpdate");
+        public static readonly ProfilerMarker TickEnemies_WriteBack = new ProfilerMarker("TickEnemies.WriteBack");
        public static readonly ProfilerMarker Movement_Update = new ProfilerMarker("Movement_Update"); 
        public static readonly ProfilerMarker ShopUI_Update = new("UGF.ShopUI.Update");
        public static readonly ProfilerMarker Inventory_Refresh = new("UGF.Inventory.Refresh");
@@ -1,6 +1,4 @@
-using Components;
 using Entity;
-using Entity.EntityData;
 using GameFramework.Event;
 using UnityGameFramework.Runtime;

@@ -45,21 +43,20 @@ namespace Simulation

                if (groupName == EnemyGroupName && args.Entity.Logic is EnemyBase enemy)
                {
-                    _world.RegisterEnemyTransform(enemy.Id, enemy.CachedTransform);
-                    _world.UpsertEnemy(CreateEnemySimData(enemy, args.UserData as EnemyData));
+                    _world.RegisterEnemyLifecycle(enemy, args.UserData);
                    return;
                }

                if (groupName == DropGroupName && args.Entity.Logic is EntityBase pickupEntity)
                {
-                    _world.UpsertPickup(CreatePickupSimData(pickupEntity));
+                    _world.RegisterPickupLifecycle(pickupEntity);
                    return;
                }

                if ((groupName == BulletGroupName || groupName == ProjectileGroupName) &&
                    args.Entity.Logic is EntityBase projectileEntity)
                {
-                    _world.UpsertProjectile(CreateProjectileSimData(projectileEntity));
+                    _world.RegisterProjectileLifecycle(projectileEntity);
                }
            }

@@ -72,67 +69,21 @@ namespace Simulation
                string groupName = args.EntityGroup.Name;
                if (groupName == EnemyGroupName)
                {
-                    _world.UnregisterEnemyTransform(args.EntityId);
-                    _world.RemoveEnemyByEntityId(args.EntityId);
+                    _world.UnregisterEnemyLifecycle(args.EntityId);
                    return;
                }

                if (groupName == DropGroupName)
                {
-                    _world.RemovePickupByEntityId(args.EntityId);
+                    _world.UnregisterPickupLifecycle(args.EntityId);
                    return;
                }

                if (groupName == BulletGroupName || groupName == ProjectileGroupName)
                {
-                    _world.RemoveProjectileByEntityId(args.EntityId);
+                    _world.UnregisterProjectileLifecycle(args.EntityId);
                }
            }
-
-            private static EnemySimData CreateEnemySimData(EnemyBase enemy, EnemyData enemyData)
-            {
-                MovementComponent movementComponent = enemy != null ? enemy.GetComponent<MovementComponent>() : null;
-
-                return new EnemySimData
-                {
-                    EntityId = enemy.Id,
-                    Position = enemy.CachedTransform.position,
-                    Forward = enemy.CachedTransform.forward,
-                    Rotation = enemy.CachedTransform.rotation,
-                    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
-                };
-            }
-
-            private static PickupSimData CreatePickupSimData(EntityBase pickupEntity)
-            {
-                return new PickupSimData
-                {
-                    EntityId = pickupEntity.Id,
-                    Position = pickupEntity.CachedTransform.position,
-                    PickupRadius = 0.35f,
-                    State = 0
-                };
-            }
-
-            private static ProjectileSimData CreateProjectileSimData(EntityBase projectileEntity)
-            {
-                return new ProjectileSimData
-                {
-                    EntityId = projectileEntity.Id,
-                    OwnerEntityId = 0,
-                    Position = projectileEntity.CachedTransform.position,
-                    Forward = projectileEntity.CachedTransform.forward,
-                    Speed = 0f,
-                    RemainingLifetime = 0f,
-                    State = 0
-                };
-            }
        }
    }
-}
+}
@@ -1,7 +1,9 @@
 using System.Collections.Generic;
+using Components;
 using CustomDebugger;
 using CustomUtility;
-using Unity.Profiling;
+using Entity;
+using Entity.EntityData;
 using UnityEngine;
 using UnityGameFramework.Runtime;

@@ -13,6 +15,24 @@ namespace Simulation
        private const int EnemyStateIdle = 0;
        private const int EnemyStateChasing = 1;
        private const int EnemyStateInAttackRange = 2;
+        
+        private struct EnemyTickWorkItem
+        {
+            public int EntityId;
+            public Vector3 CurrentPosition;
+            public Vector3 DesiredPosition;
+            public Vector3 ToPlayer;
+            public Vector3 Forward;
+            public Quaternion Rotation;
+            public float SqrDistanceToPlayer;
+            public float AttackRangeSqr;
+            public float Speed;
+            public int SeparationIterations;
+            public bool AvoidEnemyOverlap;
+            public bool CanChase;
+            public bool HasRotationUpdate;
+            public int NextState;
+        }

        [SerializeField] private bool _useSimulationMovement;

@@ -22,7 +42,8 @@ namespace Simulation
        private readonly List<EnemySimData> _enemies = new List<EnemySimData>();
        private readonly List<ProjectileSimData> _projectiles = new List<ProjectileSimData>();
        private readonly List<PickupSimData> _pickups = new List<PickupSimData>();
-        private readonly Dictionary<int, Transform> _enemyTransforms = new Dictionary<int, Transform>();
+        private readonly List<EnemySeparationAgent> _enemySeparationAgents = new List<EnemySeparationAgent>();
+        private readonly List<EnemyTickWorkItem> _enemyTickWorkItems = new List<EnemyTickWorkItem>();

        private EntityBinding EnemyBinding { get; } = new EntityBinding();
        private EntityBinding ProjectileBinding { get; } = new EntityBinding();
@@ -98,24 +119,23 @@ namespace Simulation

            _enemies.RemoveAt(lastIndex);
            EnemyBinding.UnbindByEntityId(entityId);
-            _enemyTransforms.Remove(entityId);
            return true;
        }

-        private void RegisterEnemyTransform(int entityId, Transform transform)
+        private void RegisterEnemyLifecycle(EnemyBase enemy, object userData)
        {
-            if (transform == null)
+            if (enemy == null || enemy.CachedTransform == null)
            {
-                _enemyTransforms.Remove(entityId);
                return;
            }

-            _enemyTransforms[entityId] = transform;
+            EnemyData enemyData = userData as EnemyData;
+            UpsertEnemy(CreateEnemyInitialSimData(enemy, enemyData));
        }

-        private void UnregisterEnemyTransform(int entityId)
+        private void UnregisterEnemyLifecycle(int entityId)
        {
-            _enemyTransforms.Remove(entityId);
+            RemoveEnemyByEntityId(entityId);
        }

        private bool TryGetEnemyData(int entityId, out EnemySimData enemyData)
@@ -170,6 +190,21 @@ namespace Simulation
            return true;
        }

+        private void RegisterProjectileLifecycle(EntityBase projectileEntity)
+        {
+            if (projectileEntity == null || projectileEntity.CachedTransform == null)
+            {
+                return;
+            }
+
+            UpsertProjectile(CreateProjectileInitialSimData(projectileEntity));
+        }
+
+        private void UnregisterProjectileLifecycle(int entityId)
+        {
+            RemoveProjectileByEntityId(entityId);
+        }
+
        private int AddPickup(in PickupSimData simData)
        {
            int simulationIndex = _pickups.Count;
@@ -209,6 +244,21 @@ namespace Simulation
            return true;
        }

+        private void RegisterPickupLifecycle(EntityBase pickupEntity)
+        {
+            if (pickupEntity == null || pickupEntity.CachedTransform == null)
+            {
+                return;
+            }
+
+            UpsertPickup(CreatePickupInitialSimData(pickupEntity));
+        }
+
+        private void UnregisterPickupLifecycle(int entityId)
+        {
+            RemovePickupByEntityId(entityId);
+        }
+
        public void Tick(in SimulationTickContext context)
        {
            if (!_useSimulationMovement)
@@ -227,7 +277,8 @@ namespace Simulation
            _enemies.Clear();
            _projectiles.Clear();
            _pickups.Clear();
-            _enemyTransforms.Clear();
+            _enemySeparationAgents.Clear();
+            _enemyTickWorkItems.Clear();

            EnemyBinding.Clear();
            ProjectileBinding.Clear();
@@ -244,52 +295,214 @@ namespace Simulation
            Vector3 playerPosition = context.PlayerPosition;
            playerPosition.y = 0f;

+            using (CustomProfilerMarker.TickEnemies_BuildInput.Auto())
+            {
+                BuildEnemyTickInput(in playerPosition);
+            }
+
+            using (CustomProfilerMarker.TickEnemies_MoveSeparation.Auto())
+            {
+                MoveAndSeparateEnemies(context.DeltaTime);
+            }
+
+            using (CustomProfilerMarker.TickEnemies_StateUpdate.Auto())
+            {
+                UpdateEnemyStates();
+            }
+
+            using (CustomProfilerMarker.TickEnemies_WriteBack.Auto())
+            {
+                WriteBackEnemyTickResults();
+            }
+        }
+
+        private void BuildEnemyTickInput(in Vector3 playerPosition)
+        {
+            _enemyTickWorkItems.Clear();
+            _enemySeparationAgents.Clear();
+
            for (int i = 0; i < _enemies.Count; i++)
            {
                EnemySimData enemy = _enemies[i];
-                _enemyTransforms.TryGetValue(enemy.EntityId, out Transform enemyTransform);

                Vector3 currentPosition = enemy.Position;
-                currentPosition.y = 0f;
-
-                Vector3 toPlayer = playerPosition - currentPosition;
+                Vector3 horizontalPosition = currentPosition;
+                horizontalPosition.y = 0f;
+                Vector3 toPlayer = playerPosition - horizontalPosition;
                float sqrDistance = toPlayer.sqrMagnitude;
+
                float attackRange = enemy.AttackRange > 0f ? enemy.AttackRange : DefaultAttackRange;
                float attackRangeSqr = attackRange * attackRange;
+                bool isInAttackRange = sqrDistance <= attackRangeSqr;
+                bool canChase = !isInAttackRange && enemy.Speed > 0f && sqrDistance > float.Epsilon;

-                if (sqrDistance <= attackRangeSqr)
+                EnemyTickWorkItem workItem = new EnemyTickWorkItem
                {
-                    enemy.State = EnemyStateInAttackRange;
+                    EntityId = enemy.EntityId,
+                    CurrentPosition = currentPosition,
+                    DesiredPosition = currentPosition,
+                    ToPlayer = toPlayer,
+                    Forward = enemy.Forward,
+                    Rotation = enemy.Rotation,
+                    SqrDistanceToPlayer = sqrDistance,
+                    AttackRangeSqr = attackRangeSqr,
+                    Speed = enemy.Speed,
+                    SeparationIterations = enemy.SeparationIterations > 0 ? enemy.SeparationIterations : 1,
+                    AvoidEnemyOverlap = enemy.AvoidEnemyOverlap,
+                    CanChase = canChase,
+                    HasRotationUpdate = false,
+                    NextState = EnemyStateIdle
+                };
+                _enemyTickWorkItems.Add(workItem);
+
+                if (!enemy.AvoidEnemyOverlap) continue;
+
+                _enemySeparationAgents.Add(new EnemySeparationAgent
+                {
+                    AgentId = enemy.EntityId,
+                    Position = horizontalPosition,
+                    Radius = enemy.EnemyBodyRadius > 0f ? enemy.EnemyBodyRadius : 0.45f
+                });
+            }
+        }
+
+        private void MoveAndSeparateEnemies(float deltaTime)
+        {
+            EnemySeparationSolverProvider.SetSimulationAgents(_enemySeparationAgents);
+
+            for (int i = 0; i < _enemyTickWorkItems.Count; i++)
+            {
+                EnemyTickWorkItem workItem = _enemyTickWorkItems[i];
+                if (!workItem.CanChase)
+                {
+                    _enemyTickWorkItems[i] = workItem;
+                    continue;
                }
-                else if (enemy.Speed <= 0f || sqrDistance <= float.Epsilon)
+
+                Vector3 forward = workItem.ToPlayer.normalized;
+                Vector3 desiredPosition = workItem.CurrentPosition + forward * workItem.Speed * deltaTime;
+
+                if (workItem.AvoidEnemyOverlap)
                {
-                    enemy.State = EnemyStateIdle;
+                    desiredPosition = EnemySeparationSolverProvider.ResolveSimulation(
+                        workItem.EntityId,
+                        desiredPosition,
+                        forward,
+                        workItem.SeparationIterations);
+                }
+
+                workItem.Forward = forward;
+                workItem.DesiredPosition = desiredPosition;
+
+                if (forward.sqrMagnitude > float.Epsilon)
+                {
+                    workItem.Rotation = Quaternion.LookRotation(forward, Vector3.up);
+                    workItem.HasRotationUpdate = true;
+                }
+
+                _enemyTickWorkItems[i] = workItem;
+            }
+        }
+
+        private void UpdateEnemyStates()
+        {
+            for (int i = 0; i < _enemyTickWorkItems.Count; i++)
+            {
+                EnemyTickWorkItem workItem = _enemyTickWorkItems[i];
+
+                if (workItem.SqrDistanceToPlayer <= workItem.AttackRangeSqr)
+                {
+                    workItem.NextState = EnemyStateInAttackRange;
+                }
+                else if (workItem.CanChase)
+                {
+                    workItem.NextState = EnemyStateChasing;
                }
                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);
-                    }
+                    workItem.NextState = EnemyStateIdle;
+                }

-                    enemy.Position = desiredPosition;
-                    enemy.State = EnemyStateChasing;
-                    if (forward.sqrMagnitude > float.Epsilon)
+                _enemyTickWorkItems[i] = workItem;
+            }
+        }
+
+        private void WriteBackEnemyTickResults()
+        {
+            for (int i = 0; i < _enemyTickWorkItems.Count; i++)
+            {
+                EnemySimData enemy = _enemies[i];
+                EnemyTickWorkItem workItem = _enemyTickWorkItems[i];
+
+                if (workItem.CanChase)
+                {
+                    enemy.Forward = workItem.Forward;
+                    enemy.Position = workItem.DesiredPosition;
+                    if (workItem.HasRotationUpdate)
                    {
-                        enemy.Rotation = Quaternion.LookRotation(forward, Vector3.up);
+                        enemy.Rotation = workItem.Rotation;
                    }
                }

+                enemy.State = workItem.NextState;
                _enemies[i] = enemy;
            }
        }
+
+        private static EnemySimData CreateEnemyInitialSimData(EnemyBase enemy, EnemyData enemyData)
+        {
+            Transform enemyTransform = enemy.CachedTransform;
+            MovementComponent movementComponent = enemy.GetComponent<MovementComponent>();
+
+            float speed = 0f;
+            if (enemyData != null)
+            {
+                speed = enemyData.SpeedBase;
+            }
+            else if (movementComponent != null)
+            {
+                speed = movementComponent.Speed;
+            }
+
+            return new EnemySimData
+            {
+                EntityId = enemy.Id,
+                Position = enemyTransform.position,
+                Forward = enemyTransform.forward,
+                Rotation = enemyTransform.rotation,
+                Speed = speed,
+                AttackRange = 1f,
+                AvoidEnemyOverlap = movementComponent != null && movementComponent.AvoidEnemyOverlap,
+                EnemyBodyRadius = movementComponent != null ? movementComponent.EnemyBodyRadius : 0.45f,
+                SeparationIterations = movementComponent != null ? movementComponent.SeparationIterations : 2,
+                TargetType = 0,
+                State = EnemyStateIdle
+            };
+        }
+
+        private static PickupSimData CreatePickupInitialSimData(EntityBase pickupEntity)
+        {
+            return new PickupSimData
+            {
+                EntityId = pickupEntity.Id,
+                Position = pickupEntity.CachedTransform.position,
+                PickupRadius = 0.35f,
+                State = 0
+            };
+        }
+
+        private static ProjectileSimData CreateProjectileInitialSimData(EntityBase projectileEntity)
+        {
+            return new ProjectileSimData
+            {
+                EntityId = projectileEntity.Id,
+                OwnerEntityId = 0,
+                Position = projectileEntity.CachedTransform.position,
+                Forward = projectileEntity.CachedTransform.forward,
+                Speed = 0f,
+                RemainingLifetime = 0f,
+                State = 0
+            };
+        }
    }
-}
+}
@@ -1,4 +1,3 @@
-
 using System.Collections.Generic;
 using UnityEngine;

@@ -6,70 +5,159 @@ namespace CustomUtility
 {
    public static class EnemySeparationSolverProvider
    {
-        private struct Registration
+        private enum SolverType
        {
+            GridBucket,
+            Naive
+        }
+
+        private struct LegacyRegistration
+        {
+            public int AgentId;
            public float BodyRadius;
        }

-        private static IEnemySeparationSolver _current = new GridBucketEnemySeparationSolver();
-        private static readonly Dictionary<Transform, Registration> Registrations = new();
+        private static SolverType _solverType = SolverType.GridBucket;
+        private static float _gridCellSize = 1f;
+        private static IEnemySeparationSolver _legacySolver = CreateSolver();
+        private static IEnemySeparationSolver _simulationSolver = CreateSolver();

-        public static IEnemySeparationSolver Current => _current;
-        public static string CurrentSolverName => _current.GetType().Name;
+        private static readonly Dictionary<Transform, LegacyRegistration> LegacyRegistrations = new();
+        private static readonly List<EnemySeparationAgent> LegacyAgents = new();
+        private static readonly List<Transform> LegacyRecycle = new();
+        private static int _legacySnapshotFrame = -1;
+        private static int _nextLegacyAgentId = 1;
+
+        public static IEnemySeparationSolver Current => _simulationSolver;
+        public static string CurrentSolverName => _simulationSolver.GetType().Name;

        public static void SetSolver(IEnemySeparationSolver solver)
        {
            if (solver == null) return;
-            _current = solver;
-            ReRegisterAll();
+
+            _legacySolver = solver;
+            _simulationSolver = solver;
+            _legacySnapshotFrame = -1;
        }

        public static void UseGridBucketSolver(float cellSize = 1f)
        {
-            SetSolver(new GridBucketEnemySeparationSolver(cellSize));
+            _solverType = SolverType.GridBucket;
+            _gridCellSize = Mathf.Max(0.1f, cellSize);
+            RecreateSolvers();
        }

        public static void UseNaiveSolver()
        {
-            SetSolver(new NaiveEnemySeparationSolver());
+            _solverType = SolverType.Naive;
+            RecreateSolvers();
        }

        public static void Register(Transform transform, float bodyRadius)
        {
            if (transform == null) return;

-            var registration = new Registration
+            if (LegacyRegistrations.TryGetValue(transform, out LegacyRegistration registration))
            {
-                BodyRadius = bodyRadius
-            };
-            Registrations[transform] = registration;
-            _current.Register(transform, bodyRadius);
+                registration.BodyRadius = bodyRadius;
+                LegacyRegistrations[transform] = registration;
+            }
+            else
+            {
+                LegacyRegistrations.Add(transform, new LegacyRegistration
+                {
+                    AgentId = _nextLegacyAgentId++,
+                    BodyRadius = bodyRadius
+                });
+            }
+
+            _legacySnapshotFrame = -1;
        }

        public static void Unregister(Transform transform)
        {
            if (transform == null) return;
+            if (!LegacyRegistrations.Remove(transform)) return;

-            _current.Unregister(transform);
-            Registrations.Remove(transform);
+            _legacySnapshotFrame = -1;
        }

        public static Vector3 Resolve(Transform transform, Vector3 desiredPosition, Vector3 fallbackDirection,
            int iterations)
        {
-            return _current.Resolve(transform, desiredPosition, fallbackDirection, iterations);
+            if (transform == null) return desiredPosition;
+            if (!LegacyRegistrations.TryGetValue(transform, out LegacyRegistration registration))
+            {
+                return desiredPosition;
+            }
+
+            EnsureLegacySnapshot();
+            return _legacySolver.Resolve(registration.AgentId, desiredPosition, fallbackDirection, iterations);
        }

-        private static void ReRegisterAll()
+        public static void SetSimulationAgents(IReadOnlyList<EnemySeparationAgent> agents)
        {
-            foreach (var pair in Registrations)
+            _simulationSolver.SetAgents(agents);
+        }
+
+        public static Vector3 ResolveSimulation(int agentId, Vector3 desiredPosition, Vector3 fallbackDirection,
+            int iterations)
+        {
+            return _simulationSolver.Resolve(agentId, desiredPosition, fallbackDirection, iterations);
+        }
+
+        private static void EnsureLegacySnapshot()
+        {
+            int frame = Time.frameCount;
+            if (_legacySnapshotFrame == frame) return;
+
+            _legacySnapshotFrame = frame;
+            LegacyAgents.Clear();
+            LegacyRecycle.Clear();
+
+            foreach (var pair in LegacyRegistrations)
            {
                Transform transform = pair.Key;
-                Registration registration = pair.Value;
-                if (transform == null) continue;
+                if (transform == null)
+                {
+                    LegacyRecycle.Add(pair.Key);
+                    continue;
+                }

-                _current.Register(transform, registration.BodyRadius);
+                Vector3 position = transform.position;
+                position.y = 0f;
+
+                LegacyAgents.Add(new EnemySeparationAgent
+                {
+                    AgentId = pair.Value.AgentId,
+                    Position = position,
+                    Radius = Mathf.Max(0.01f, pair.Value.BodyRadius)
+                });
            }
+
+            for (int i = 0; i < LegacyRecycle.Count; i++)
+            {
+                LegacyRegistrations.Remove(LegacyRecycle[i]);
+            }
+
+            _legacySolver.SetAgents(LegacyAgents);
        }
-    }    
+
+        private static void RecreateSolvers()
+        {
+            _legacySolver = CreateSolver();
+            _simulationSolver = CreateSolver();
+            _legacySnapshotFrame = -1;
+        }
+
+        private static IEnemySeparationSolver CreateSolver()
+        {
+            if (_solverType == SolverType.Naive)
+            {
+                return new NaiveEnemySeparationSolver();
+            }
+
+            return new GridBucketEnemySeparationSolver(_gridCellSize);
+        }
+    }
 }
@@ -4,24 +4,20 @@ namespace CustomUtility
 {
    public sealed class GridBucketEnemySeparationSolver : IEnemySeparationSolver
    {
-        private sealed class Agent
+        private struct Agent
        {
-            public Transform Transform;
            public float Radius;
            public Vector3 Position;
            public int CellX;
            public int CellZ;
        }

-        private readonly System.Collections.Generic.Dictionary<Transform, Agent> _agents = new();
-
-        private readonly System.Collections.Generic.Dictionary<long, System.Collections.Generic.List<Transform>>
-            _buckets = new();
-
-        private readonly System.Collections.Generic.List<Transform> _recycle = new();
+        private readonly System.Collections.Generic.Dictionary<int, Agent> _agents = new();
+        private readonly System.Collections.Generic.Dictionary<long, System.Collections.Generic.List<int>> _buckets = new();
+        private readonly System.Collections.Generic.Stack<System.Collections.Generic.List<int>> _bucketListPool = new();
+        private readonly System.Collections.Generic.List<long> _activeBucketKeys = new();
        private readonly float _cellSize;

-        private int _snapshotFrame = -1;
        private float _maxRadius = 0.45f;

        public GridBucketEnemySeparationSolver(float cellSize = 1f)
@@ -29,44 +25,42 @@ namespace CustomUtility
            _cellSize = Mathf.Max(0.1f, cellSize);
        }

-        public void Register(Transform transform, float bodyRadius)
+        public void SetAgents(System.Collections.Generic.IReadOnlyList<EnemySeparationAgent> agents)
        {
-            if (transform == null) return;
+            RecycleBucketsForSnapshot();
+            _agents.Clear();
+            _maxRadius = 0.01f;

-            if (!_agents.TryGetValue(transform, out var agent))
+            if (agents == null) return;
+
+            for (int i = 0; i < agents.Count; i++)
            {
-                agent = new Agent();
-                _agents.Add(transform, agent);
-            }
+                EnemySeparationAgent input = agents[i];
+                Vector3 position = input.Position;
+                position.y = 0f;
+                float radius = Mathf.Max(0.01f, input.Radius);

-            agent.Transform = transform;
-            agent.Radius = Mathf.Max(0.01f, bodyRadius);
-            if (agent.Radius > _maxRadius)
-            {
-                _maxRadius = agent.Radius;
-            }
+                Agent agent = new Agent
+                {
+                    Radius = radius,
+                    Position = position,
+                    CellX = ToCell(position.x),
+                    CellZ = ToCell(position.z)
+                };

-            _snapshotFrame = -1;
+                _agents[input.AgentId] = agent;
+                AddToBucket(input.AgentId, agent.CellX, agent.CellZ);
+
+                if (radius > _maxRadius)
+                {
+                    _maxRadius = radius;
+                }
+            }
        }

-        public void Unregister(Transform transform)
+        public Vector3 Resolve(int agentId, Vector3 desiredPosition, Vector3 fallbackDirection, int iterations)
        {
-            if (transform == null) return;
-            if (!_agents.TryGetValue(transform, out var agent)) return;
-
-            RemoveFromBucket(transform, agent.CellX, agent.CellZ);
-            _agents.Remove(transform);
-            RecalculateMaxRadius();
-            _snapshotFrame = -1;
-        }
-
-        public Vector3 Resolve(Transform transform, Vector3 desiredPosition, Vector3 fallbackDirection,
-            int iterations)
-        {
-            if (transform == null) return desiredPosition;
-            if (!_agents.TryGetValue(transform, out var self)) return desiredPosition;
-
-            EnsureSnapshot();
+            if (!_agents.TryGetValue(agentId, out var self)) return desiredPosition;

            Vector3 candidate = desiredPosition;
            candidate.y = 0f;
@@ -89,9 +83,9 @@ namespace CustomUtility

                        for (int i = 0; i < bucket.Count; i++)
                        {
-                            Transform otherTransform = bucket[i];
-                            if (otherTransform == transform) continue;
-                            if (!_agents.TryGetValue(otherTransform, out var other)) continue;
+                            int otherAgentId = bucket[i];
+                            if (otherAgentId == agentId) continue;
+                            if (!_agents.TryGetValue(otherAgentId, out var other)) continue;

                            Vector3 toSelf = candidate - other.Position;
                            float minDistance = self.Radius + other.Radius;
@@ -114,98 +108,65 @@ namespace CustomUtility
                }
            }

-            SyncAgentPosition(transform, self, candidate);
+            SyncAgentPosition(agentId, ref self, candidate);

            candidate.y = desiredPosition.y;
            return candidate;
        }

-        private void EnsureSnapshot()
+        private void RecycleBucketsForSnapshot()
        {
-            int frame = Time.frameCount;
-            if (_snapshotFrame == frame) return;
-
-            _snapshotFrame = frame;
-            _buckets.Clear();
-            _recycle.Clear();
-
-            foreach (var pair in _agents)
+            for (int i = 0; i < _activeBucketKeys.Count; i++)
            {
-                Transform transform = pair.Key;
-                Agent agent = pair.Value;
-                if (transform == null || agent.Transform == null)
-                {
-                    _recycle.Add(transform);
-                    continue;
-                }
+                long key = _activeBucketKeys[i];
+                if (!_buckets.TryGetValue(key, out var bucket)) continue;

-                Vector3 position = agent.Transform.position;
-                position.y = 0f;
-                agent.Position = position;
-
-                agent.CellX = ToCell(position.x);
-                agent.CellZ = ToCell(position.z);
-                AddToBucket(transform, agent.CellX, agent.CellZ);
+                bucket.Clear();
+                _bucketListPool.Push(bucket);
+                _buckets.Remove(key);
            }

-            for (int i = 0; i < _recycle.Count; i++)
-            {
-                _agents.Remove(_recycle[i]);
-            }
+            _activeBucketKeys.Clear();
        }

-        private void SyncAgentPosition(Transform transform, Agent agent, Vector3 position)
+        private void SyncAgentPosition(int agentId, ref Agent agent, Vector3 position)
        {
            int newCellX = ToCell(position.x);
            int newCellZ = ToCell(position.z);

            if (agent.CellX != newCellX || agent.CellZ != newCellZ)
            {
-                RemoveFromBucket(transform, agent.CellX, agent.CellZ);
-                AddToBucket(transform, newCellX, newCellZ);
+                RemoveFromBucket(agentId, agent.CellX, agent.CellZ);
+                AddToBucket(agentId, newCellX, newCellZ);
                agent.CellX = newCellX;
                agent.CellZ = newCellZ;
            }

            agent.Position = position;
+            _agents[agentId] = agent;
        }

-        private void AddToBucket(Transform transform, int cellX, int cellZ)
+        private void AddToBucket(int agentId, int cellX, int cellZ)
        {
            long key = CellKey(cellX, cellZ);
            if (!_buckets.TryGetValue(key, out var list))
            {
-                list = new System.Collections.Generic.List<Transform>(8);
+                list = _bucketListPool.Count > 0
+                    ? _bucketListPool.Pop()
+                    : new System.Collections.Generic.List<int>(8);
                _buckets.Add(key, list);
+                _activeBucketKeys.Add(key);
            }

-            list.Add(transform);
+            list.Add(agentId);
        }

-        private void RemoveFromBucket(Transform transform, int cellX, int cellZ)
+        private void RemoveFromBucket(int agentId, int cellX, int cellZ)
        {
            long key = CellKey(cellX, cellZ);
            if (!_buckets.TryGetValue(key, out var list)) return;

-            list.Remove(transform);
-            if (list.Count == 0)
-            {
-                _buckets.Remove(key);
-            }
-        }
-
-        private void RecalculateMaxRadius()
-        {
-            float max = 0.01f;
-            foreach (var pair in _agents)
-            {
-                if (pair.Value.Radius > max)
-                {
-                    max = pair.Value.Radius;
-                }
-            }
-
-            _maxRadius = max;
+            list.Remove(agentId);
        }

        private int ToCell(float value)
@@ -218,5 +179,4 @@ namespace CustomUtility
            return ((long)x << 32) ^ (uint)z;
        }
    }
-
 }
@@ -2,10 +2,16 @@ using UnityEngine;

 namespace CustomUtility
 {
+    public struct EnemySeparationAgent
+    {
+        public int AgentId;
+        public Vector3 Position;
+        public float Radius;
+    }
+
    public interface IEnemySeparationSolver
    {
-        void Register(Transform transform, float bodyRadius);
-        void Unregister(Transform transform);
-        Vector3 Resolve(Transform transform, Vector3 desiredPosition, Vector3 fallbackDirection, int iterations);
+        void SetAgents(System.Collections.Generic.IReadOnlyList<EnemySeparationAgent> agents);
+        Vector3 Resolve(int agentId, Vector3 desiredPosition, Vector3 fallbackDirection, int iterations);
    }
 }
@@ -4,39 +4,41 @@ namespace CustomUtility
 {
    public sealed class NaiveEnemySeparationSolver : IEnemySeparationSolver
    {
-        private sealed class Agent
+        private struct Agent
        {
-            public Transform Transform;
            public float Radius;
+            public Vector3 Position;
        }

-        private readonly System.Collections.Generic.Dictionary<Transform, Agent> _agents = new();
-        private readonly System.Collections.Generic.List<Transform> _agentKeys = new();
+        private readonly System.Collections.Generic.Dictionary<int, Agent> _agents = new();
+        private readonly System.Collections.Generic.List<int> _agentKeys = new();

-        public void Register(Transform transform, float bodyRadius)
+        public void SetAgents(System.Collections.Generic.IReadOnlyList<EnemySeparationAgent> agents)
        {
-            if (transform == null) return;
+            _agents.Clear();
+            _agentKeys.Clear();
+            if (agents == null) return;

-            if (!_agents.TryGetValue(transform, out var agent))
+            for (int i = 0; i < agents.Count; i++)
            {
-                agent = new Agent();
-                _agents.Add(transform, agent);
+                EnemySeparationAgent input = agents[i];
+                Vector3 position = input.Position;
+                position.y = 0f;
+
+                Agent agent = new Agent
+                {
+                    Radius = Mathf.Max(0.01f, input.Radius),
+                    Position = position
+                };
+
+                _agents[input.AgentId] = agent;
+                _agentKeys.Add(input.AgentId);
            }
-
-            agent.Transform = transform;
-            agent.Radius = Mathf.Max(0.01f, bodyRadius);
        }

-        public void Unregister(Transform transform)
+        public Vector3 Resolve(int agentId, Vector3 desiredPosition, Vector3 fallbackDirection, int iterations)
        {
-            if (transform == null) return;
-            _agents.Remove(transform);
-        }
-
-        public Vector3 Resolve(Transform transform, Vector3 desiredPosition, Vector3 fallbackDirection, int iterations)
-        {
-            if (transform == null) return desiredPosition;
-            if (!_agents.TryGetValue(transform, out var self)) return desiredPosition;
+            if (!_agents.TryGetValue(agentId, out var self)) return desiredPosition;

            Vector3 candidate = desiredPosition;
            candidate.y = 0f;
@@ -44,26 +46,16 @@ namespace CustomUtility
            Vector3 fallback = fallbackDirection.sqrMagnitude > 0.0001f ? fallbackDirection.normalized : Vector3.right;
            fallback.y = 0f;

-            _agentKeys.Clear();
-            foreach (var pair in _agents)
-            {
-                _agentKeys.Add(pair.Key);
-            }
-
            int effectiveIterations = Mathf.Max(1, iterations);
            for (int iter = 0; iter < effectiveIterations; iter++)
            {
                for (int i = 0; i < _agentKeys.Count; i++)
                {
-                    Transform otherTransform = _agentKeys[i];
-                    if (otherTransform == transform) continue;
-                    if (!_agents.TryGetValue(otherTransform, out var other)) continue;
-                    if (other.Transform == null) continue;
+                    int otherAgentId = _agentKeys[i];
+                    if (otherAgentId == agentId) continue;
+                    if (!_agents.TryGetValue(otherAgentId, out var other)) continue;

-                    Vector3 otherPosition = other.Transform.position;
-                    otherPosition.y = 0f;
-
-                    Vector3 toSelf = candidate - otherPosition;
+                    Vector3 toSelf = candidate - other.Position;
                    float minDistance = self.Radius + other.Radius;
                    float minDistanceSq = minDistance * minDistance;
                    float sqrDistance = toSelf.sqrMagnitude;
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 3d51d9ea4e1d4d84aa3fa2e38d79b2f4
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 7c2d2681dd4b47f48b0f6a8185e4fa2b
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 9b8f4bce7ec54a5d8e53d7d4e6f8d12a
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
@@ -0,0 +1,11 @@
+{
+    "name": "Simulation.EditModeTests",
+    "references": [],
+    "optionalUnityReferences": [
+        "TestAssemblies"
+    ],
+    "includePlatforms": [
+        "Editor"
+    ],
+    "excludePlatforms": []
+}
@@ -0,0 +1,7 @@
+fileFormatVersion: 2
+guid: 4f4b677269d9466da1b7f4b3d33895f7
+AssemblyDefinitionImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
@@ -0,0 +1,220 @@
+using System.Reflection;
+using NUnit.Framework;
+using UnityEngine;
+
+namespace Simulation.Tests.Editor
+{
+    public class SimulationWorldTickTests
+    {
+        private const string GameAssemblyName = "Assembly-CSharp";
+        private const BindingFlags PublicStatic = BindingFlags.Public | BindingFlags.Static;
+        private const BindingFlags PublicInstance = BindingFlags.Public | BindingFlags.Instance;
+        private const BindingFlags NonPublicInstance = BindingFlags.NonPublic | BindingFlags.Instance;
+
+        private static readonly System.Type SimulationWorldType =
+            System.Type.GetType($"Simulation.SimulationWorld, {GameAssemblyName}");
+
+        private static readonly System.Type SimulationTickContextType =
+            System.Type.GetType($"Simulation.SimulationTickContext, {GameAssemblyName}");
+
+        private static readonly System.Type EnemySimDataType =
+            System.Type.GetType($"Simulation.EnemySimData, {GameAssemblyName}");
+
+        private static readonly System.Type EnemySeparationSolverProviderType =
+            System.Type.GetType($"CustomUtility.EnemySeparationSolverProvider, {GameAssemblyName}");
+
+        private static readonly MethodInfo UpsertEnemyMethod =
+            SimulationWorldType?.GetMethod("UpsertEnemy", NonPublicInstance);
+
+        private static readonly MethodInfo RemoveEnemyByEntityIdMethod =
+            SimulationWorldType?.GetMethod("RemoveEnemyByEntityId", NonPublicInstance);
+
+        private static readonly MethodInfo TryGetEnemyDataMethod =
+            SimulationWorldType?.GetMethod("TryGetEnemyData", NonPublicInstance);
+
+        private static readonly MethodInfo TickMethod =
+            SimulationWorldType?.GetMethod("Tick", PublicInstance);
+
+        private static readonly MethodInfo SetUseSimulationMovementMethod =
+            SimulationWorldType?.GetMethod("SetUseSimulationMovement", PublicInstance);
+
+        private static readonly MethodInfo UseGridBucketSolverMethod =
+            EnemySeparationSolverProviderType?.GetMethod("UseGridBucketSolver", PublicStatic);
+
+        private static readonly FieldInfo EntitySyncField =
+            SimulationWorldType?.GetField("_entitySync", NonPublicInstance);
+
+        private static readonly FieldInfo PresentationField =
+            SimulationWorldType?.GetField("_presentation", NonPublicInstance);
+
+        private static readonly PropertyInfo EnemiesProperty =
+            SimulationWorldType?.GetProperty("Enemies", PublicInstance);
+
+        private GameObject _worldGameObject;
+        private Component _worldComponent;
+
+        [SetUp]
+        public void SetUp()
+        {
+            Assert.NotNull(SimulationWorldType, "SimulationWorld type lookup failed.");
+            Assert.NotNull(SimulationTickContextType, "SimulationTickContext type lookup failed.");
+            Assert.NotNull(EnemySimDataType, "EnemySimData type lookup failed.");
+            Assert.NotNull(EnemySeparationSolverProviderType, "EnemySeparationSolverProvider type lookup failed.");
+            Assert.NotNull(UpsertEnemyMethod, "UpsertEnemy reflection lookup failed.");
+            Assert.NotNull(RemoveEnemyByEntityIdMethod, "RemoveEnemyByEntityId reflection lookup failed.");
+            Assert.NotNull(TryGetEnemyDataMethod, "TryGetEnemyData reflection lookup failed.");
+            Assert.NotNull(TickMethod, "Tick reflection lookup failed.");
+            Assert.NotNull(SetUseSimulationMovementMethod, "SetUseSimulationMovement reflection lookup failed.");
+            Assert.NotNull(UseGridBucketSolverMethod, "UseGridBucketSolver reflection lookup failed.");
+            Assert.NotNull(EnemiesProperty, "Enemies property reflection lookup failed.");
+
+            _worldGameObject = new GameObject("SimulationWorldTickTests");
+            _worldComponent = _worldGameObject.AddComponent(SimulationWorldType);
+            SetUseSimulationMovementMethod.Invoke(_worldComponent, new object[] { true });
+            UseGridBucketSolverMethod.Invoke(null, new object[] { 1f });
+        }
+
+        [TearDown]
+        public void TearDown()
+        {
+            if (_worldComponent != null)
+            {
+                EntitySyncField?.SetValue(_worldComponent, null);
+                PresentationField?.SetValue(_worldComponent, null);
+            }
+
+            if (_worldGameObject != null)
+            {
+                Object.DestroyImmediate(_worldGameObject);
+            }
+
+            _worldComponent = null;
+            _worldGameObject = null;
+        }
+
+        [Test]
+        public void TickEnemies_ChasesPlayer_WhenOutOfAttackRange()
+        {
+            UpsertEnemy(CreateEnemy(entityId: 1001, position: Vector3.zero, speed: 2f, attackRange: 1f));
+
+            InvokeTick(deltaTime: 1f, realDeltaTime: 1f, playerPosition: new Vector3(10f, 0f, 0f));
+
+            object enemy = GetEnemyAt(0);
+            Assert.That((int)GetField(enemy, "State"), Is.EqualTo(1));
+            Vector3 position = (Vector3)GetField(enemy, "Position");
+            Vector3 forward = (Vector3)GetField(enemy, "Forward");
+            Assert.That(position.x, Is.EqualTo(2f).Within(0.0001f));
+            Assert.That(position.z, Is.EqualTo(0f).Within(0.0001f));
+            Assert.That(forward.x, Is.EqualTo(1f).Within(0.0001f));
+        }
+
+        [Test]
+        public void TickEnemies_StopsMovement_WhenInAttackRange()
+        {
+            Vector3 startPosition = Vector3.zero;
+            UpsertEnemy(CreateEnemy(entityId: 1002, position: startPosition, speed: 3f, attackRange: 2f));
+
+            InvokeTick(deltaTime: 1f, realDeltaTime: 1f, playerPosition: new Vector3(1f, 0f, 0f));
+
+            object enemy = GetEnemyAt(0);
+            Assert.That((int)GetField(enemy, "State"), Is.EqualTo(2));
+            Vector3 position = (Vector3)GetField(enemy, "Position");
+            Assert.That(position.x, Is.EqualTo(startPosition.x).Within(0.0001f));
+            Assert.That(position.y, Is.EqualTo(startPosition.y).Within(0.0001f));
+            Assert.That(position.z, Is.EqualTo(startPosition.z).Within(0.0001f));
+        }
+
+        [Test]
+        public void RemoveEnemyByEntityId_RemapIndex_ForMovedEnemy()
+        {
+            UpsertEnemy(CreateEnemy(entityId: 2001, position: new Vector3(0f, 0f, 0f), speed: 1f, attackRange: 1f));
+            UpsertEnemy(CreateEnemy(entityId: 2002, position: new Vector3(2f, 0f, 0f), speed: 1f, attackRange: 1f));
+            UpsertEnemy(CreateEnemy(entityId: 2003, position: new Vector3(4f, 0f, 0f), speed: 1f, attackRange: 1f));
+
+            bool removed = RemoveEnemyByEntityId(2002);
+            bool removedEntityExists = TryGetEnemyData(2002, out _);
+            bool movedEntityExists = TryGetEnemyData(2003, out object movedEnemy);
+
+            Assert.IsTrue(removed);
+            Assert.That(GetEnemiesCount(), Is.EqualTo(2));
+            Assert.IsFalse(removedEntityExists);
+            Assert.IsTrue(movedEntityExists);
+            Assert.That((int)GetField(movedEnemy, "EntityId"), Is.EqualTo(2003));
+            Assert.That((int)GetField(GetEnemyAt(1), "EntityId"), Is.EqualTo(2003));
+        }
+
+        private object CreateEnemy(int entityId, Vector3 position, float speed, float attackRange)
+        {
+            object enemy = System.Activator.CreateInstance(EnemySimDataType);
+            SetField(ref enemy, "EntityId", entityId);
+            SetField(ref enemy, "Position", position);
+            SetField(ref enemy, "Forward", Vector3.forward);
+            SetField(ref enemy, "Rotation", Quaternion.identity);
+            SetField(ref enemy, "Speed", speed);
+            SetField(ref enemy, "AttackRange", attackRange);
+            SetField(ref enemy, "AvoidEnemyOverlap", false);
+            SetField(ref enemy, "EnemyBodyRadius", 0.45f);
+            SetField(ref enemy, "SeparationIterations", 1);
+            SetField(ref enemy, "TargetType", 0);
+            SetField(ref enemy, "State", 0);
+            return enemy;
+        }
+
+        private void InvokeTick(float deltaTime, float realDeltaTime, Vector3 playerPosition)
+        {
+            object tickContext = System.Activator.CreateInstance(
+                SimulationTickContextType,
+                BindingFlags.Public | BindingFlags.Instance,
+                null,
+                new object[] { deltaTime, realDeltaTime, playerPosition },
+                null);
+
+            TickMethod.Invoke(_worldComponent, new[] { tickContext });
+        }
+
+        private void UpsertEnemy(object enemy)
+        {
+            UpsertEnemyMethod.Invoke(_worldComponent, new[] { enemy });
+        }
+
+        private bool RemoveEnemyByEntityId(int entityId)
+        {
+            return (bool)RemoveEnemyByEntityIdMethod.Invoke(_worldComponent, new object[] { entityId });
+        }
+
+        private bool TryGetEnemyData(int entityId, out object enemyData)
+        {
+            object boxedDefault = System.Activator.CreateInstance(EnemySimDataType);
+            object[] parameters = { entityId, boxedDefault };
+            bool result = (bool)TryGetEnemyDataMethod.Invoke(_worldComponent, parameters);
+            enemyData = parameters[1];
+            return result;
+        }
+
+        private object GetEnemyAt(int index)
+        {
+            object enemies = EnemiesProperty.GetValue(_worldComponent);
+            PropertyInfo itemProperty = enemies.GetType().GetProperty("Item", PublicInstance);
+            return itemProperty.GetValue(enemies, new object[] { index });
+        }
+
+        private int GetEnemiesCount()
+        {
+            object enemies = EnemiesProperty.GetValue(_worldComponent);
+            PropertyInfo countProperty = enemies.GetType().GetProperty("Count", PublicInstance);
+            return (int)countProperty.GetValue(enemies);
+        }
+
+        private static object GetField(object target, string fieldName)
+        {
+            FieldInfo field = target.GetType().GetField(fieldName, PublicInstance);
+            return field.GetValue(target);
+        }
+
+        private static void SetField(ref object target, string fieldName, object value)
+        {
+            FieldInfo field = target.GetType().GetField(fieldName, PublicInstance);
+            field.SetValue(target, value);
+        }
+    }
+}
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 6da65404acbb4cb3acc082171f76a5a7
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 7f1f9d2cc3fbc2d4ea5cac4fd488b72f
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
@@ -0,0 +1,9 @@
+{
+    "name": "Simulation.PlayModeTests",
+    "references": [],
+    "optionalUnityReferences": [
+        "TestAssemblies"
+    ],
+    "includePlatforms": [],
+    "excludePlatforms": []
+}
@@ -0,0 +1,7 @@
+fileFormatVersion: 2
+guid: efb31cfd979449f6b1f6f2f23e6ad5ce
+AssemblyDefinitionImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
@@ -0,0 +1,232 @@
+using System.Collections;
+using System.Reflection;
+using NUnit.Framework;
+using UnityEngine;
+using UnityEngine.TestTools;
+
+namespace Simulation.Tests.PlayMode
+{
+    public class SimulationWorldPlayModeTests
+    {
+        private const string GameAssemblyName = "Assembly-CSharp";
+        private const BindingFlags PublicStatic = BindingFlags.Public | BindingFlags.Static;
+        private const BindingFlags PublicInstance = BindingFlags.Public | BindingFlags.Instance;
+        private const BindingFlags NonPublicInstance = BindingFlags.NonPublic | BindingFlags.Instance;
+
+        private static readonly System.Type SimulationWorldType =
+            System.Type.GetType($"Simulation.SimulationWorld, {GameAssemblyName}");
+
+        private static readonly System.Type SimulationTickContextType =
+            System.Type.GetType($"Simulation.SimulationTickContext, {GameAssemblyName}");
+
+        private static readonly System.Type EnemySimDataType =
+            System.Type.GetType($"Simulation.EnemySimData, {GameAssemblyName}");
+
+        private static readonly System.Type EnemySeparationSolverProviderType =
+            System.Type.GetType($"CustomUtility.EnemySeparationSolverProvider, {GameAssemblyName}");
+
+        private static readonly MethodInfo UpsertEnemyMethod =
+            SimulationWorldType?.GetMethod("UpsertEnemy", NonPublicInstance);
+
+        private static readonly MethodInfo RemoveEnemyByEntityIdMethod =
+            SimulationWorldType?.GetMethod("RemoveEnemyByEntityId", NonPublicInstance);
+
+        private static readonly MethodInfo TryGetEnemyDataMethod =
+            SimulationWorldType?.GetMethod("TryGetEnemyData", NonPublicInstance);
+
+        private static readonly MethodInfo TickMethod =
+            SimulationWorldType?.GetMethod("Tick", PublicInstance);
+
+        private static readonly MethodInfo SetUseSimulationMovementMethod =
+            SimulationWorldType?.GetMethod("SetUseSimulationMovement", PublicInstance);
+
+        private static readonly MethodInfo UseGridBucketSolverMethod =
+            EnemySeparationSolverProviderType?.GetMethod("UseGridBucketSolver", PublicStatic);
+
+        private static readonly FieldInfo EntitySyncField =
+            SimulationWorldType?.GetField("_entitySync", NonPublicInstance);
+
+        private static readonly FieldInfo PresentationField =
+            SimulationWorldType?.GetField("_presentation", NonPublicInstance);
+
+        private static readonly PropertyInfo EnemiesProperty =
+            SimulationWorldType?.GetProperty("Enemies", PublicInstance);
+
+        private GameObject _worldGameObject;
+        private Component _worldComponent;
+
+        [UnitySetUp]
+        public IEnumerator SetUp()
+        {
+            Assert.NotNull(SimulationWorldType, "SimulationWorld type lookup failed.");
+            Assert.NotNull(SimulationTickContextType, "SimulationTickContext type lookup failed.");
+            Assert.NotNull(EnemySimDataType, "EnemySimData type lookup failed.");
+            Assert.NotNull(EnemySeparationSolverProviderType, "EnemySeparationSolverProvider type lookup failed.");
+            Assert.NotNull(UpsertEnemyMethod, "UpsertEnemy reflection lookup failed.");
+            Assert.NotNull(RemoveEnemyByEntityIdMethod, "RemoveEnemyByEntityId reflection lookup failed.");
+            Assert.NotNull(TryGetEnemyDataMethod, "TryGetEnemyData reflection lookup failed.");
+            Assert.NotNull(TickMethod, "Tick reflection lookup failed.");
+            Assert.NotNull(SetUseSimulationMovementMethod, "SetUseSimulationMovement reflection lookup failed.");
+            Assert.NotNull(UseGridBucketSolverMethod, "UseGridBucketSolver reflection lookup failed.");
+            Assert.NotNull(EnemiesProperty, "Enemies property reflection lookup failed.");
+
+            _worldGameObject = new GameObject("SimulationWorldPlayModeTests");
+            _worldComponent = _worldGameObject.AddComponent(SimulationWorldType);
+
+            // Isolate PlayMode regression to simulation behavior only.
+            EntitySyncField?.SetValue(_worldComponent, null);
+            PresentationField?.SetValue(_worldComponent, null);
+
+            SetUseSimulationMovementMethod.Invoke(_worldComponent, new object[] { true });
+            UseGridBucketSolverMethod.Invoke(null, new object[] { 1f });
+            yield return null;
+        }
+
+        [UnityTearDown]
+        public IEnumerator TearDown()
+        {
+            if (_worldComponent != null)
+            {
+                EntitySyncField?.SetValue(_worldComponent, null);
+                PresentationField?.SetValue(_worldComponent, null);
+            }
+
+            if (_worldGameObject != null)
+            {
+                Object.Destroy(_worldGameObject);
+            }
+
+            _worldComponent = null;
+            _worldGameObject = null;
+            yield return null;
+        }
+
+        [UnityTest]
+        public IEnumerator TickEnemies_ChasesPlayer_WhenOutOfAttackRange()
+        {
+            UpsertEnemy(CreateEnemy(entityId: 3001, position: Vector3.zero, speed: 2f, attackRange: 1f));
+
+            InvokeTick(deltaTime: 1f, realDeltaTime: 1f, playerPosition: new Vector3(10f, 0f, 0f));
+
+            object enemy = GetEnemyAt(0);
+            Assert.That((int)GetField(enemy, "State"), Is.EqualTo(1));
+            Vector3 position = (Vector3)GetField(enemy, "Position");
+            Vector3 forward = (Vector3)GetField(enemy, "Forward");
+            Assert.That(position.x, Is.EqualTo(2f).Within(0.0001f));
+            Assert.That(position.z, Is.EqualTo(0f).Within(0.0001f));
+            Assert.That(forward.x, Is.EqualTo(1f).Within(0.0001f));
+            yield break;
+        }
+
+        [UnityTest]
+        public IEnumerator TickEnemies_StopsMovement_WhenInAttackRange()
+        {
+            Vector3 startPosition = Vector3.zero;
+            UpsertEnemy(CreateEnemy(entityId: 3002, position: startPosition, speed: 3f, attackRange: 2f));
+
+            InvokeTick(deltaTime: 1f, realDeltaTime: 1f, playerPosition: new Vector3(1f, 0f, 0f));
+
+            object enemy = GetEnemyAt(0);
+            Assert.That((int)GetField(enemy, "State"), Is.EqualTo(2));
+            Vector3 position = (Vector3)GetField(enemy, "Position");
+            Assert.That(position.x, Is.EqualTo(startPosition.x).Within(0.0001f));
+            Assert.That(position.y, Is.EqualTo(startPosition.y).Within(0.0001f));
+            Assert.That(position.z, Is.EqualTo(startPosition.z).Within(0.0001f));
+            yield break;
+        }
+
+        [UnityTest]
+        public IEnumerator RemoveEnemyByEntityId_RemapIndex_ForMovedEnemy()
+        {
+            UpsertEnemy(CreateEnemy(entityId: 3101, position: new Vector3(0f, 0f, 0f), speed: 1f, attackRange: 1f));
+            UpsertEnemy(CreateEnemy(entityId: 3102, position: new Vector3(2f, 0f, 0f), speed: 1f, attackRange: 1f));
+            UpsertEnemy(CreateEnemy(entityId: 3103, position: new Vector3(4f, 0f, 0f), speed: 1f, attackRange: 1f));
+
+            bool removed = RemoveEnemyByEntityId(3102);
+            bool removedEntityExists = TryGetEnemyData(3102, out _);
+            bool movedEntityExists = TryGetEnemyData(3103, out object movedEnemy);
+
+            Assert.IsTrue(removed);
+            Assert.That(GetEnemiesCount(), Is.EqualTo(2));
+            Assert.IsFalse(removedEntityExists);
+            Assert.IsTrue(movedEntityExists);
+            Assert.That((int)GetField(movedEnemy, "EntityId"), Is.EqualTo(3103));
+            Assert.That((int)GetField(GetEnemyAt(1), "EntityId"), Is.EqualTo(3103));
+            yield break;
+        }
+
+        private object CreateEnemy(int entityId, Vector3 position, float speed, float attackRange)
+        {
+            object enemy = System.Activator.CreateInstance(EnemySimDataType);
+            SetField(ref enemy, "EntityId", entityId);
+            SetField(ref enemy, "Position", position);
+            SetField(ref enemy, "Forward", Vector3.forward);
+            SetField(ref enemy, "Rotation", Quaternion.identity);
+            SetField(ref enemy, "Speed", speed);
+            SetField(ref enemy, "AttackRange", attackRange);
+            SetField(ref enemy, "AvoidEnemyOverlap", false);
+            SetField(ref enemy, "EnemyBodyRadius", 0.45f);
+            SetField(ref enemy, "SeparationIterations", 1);
+            SetField(ref enemy, "TargetType", 0);
+            SetField(ref enemy, "State", 0);
+            return enemy;
+        }
+
+        private void InvokeTick(float deltaTime, float realDeltaTime, Vector3 playerPosition)
+        {
+            object tickContext = System.Activator.CreateInstance(
+                SimulationTickContextType,
+                BindingFlags.Public | BindingFlags.Instance,
+                null,
+                new object[] { deltaTime, realDeltaTime, playerPosition },
+                null);
+
+            TickMethod.Invoke(_worldComponent, new[] { tickContext });
+        }
+
+        private void UpsertEnemy(object enemy)
+        {
+            UpsertEnemyMethod.Invoke(_worldComponent, new[] { enemy });
+        }
+
+        private bool RemoveEnemyByEntityId(int entityId)
+        {
+            return (bool)RemoveEnemyByEntityIdMethod.Invoke(_worldComponent, new object[] { entityId });
+        }
+
+        private bool TryGetEnemyData(int entityId, out object enemyData)
+        {
+            object boxedDefault = System.Activator.CreateInstance(EnemySimDataType);
+            object[] parameters = { entityId, boxedDefault };
+            bool result = (bool)TryGetEnemyDataMethod.Invoke(_worldComponent, parameters);
+            enemyData = parameters[1];
+            return result;
+        }
+
+        private object GetEnemyAt(int index)
+        {
+            object enemies = EnemiesProperty.GetValue(_worldComponent);
+            PropertyInfo itemProperty = enemies.GetType().GetProperty("Item", PublicInstance);
+            return itemProperty.GetValue(enemies, new object[] { index });
+        }
+
+        private int GetEnemiesCount()
+        {
+            object enemies = EnemiesProperty.GetValue(_worldComponent);
+            PropertyInfo countProperty = enemies.GetType().GetProperty("Count", PublicInstance);
+            return (int)countProperty.GetValue(enemies);
+        }
+
+        private static object GetField(object target, string fieldName)
+        {
+            FieldInfo field = target.GetType().GetField(fieldName, PublicInstance);
+            return field.GetValue(target);
+        }
+
+        private static void SetField(ref object target, string fieldName, object value)
+        {
+            FieldInfo field = target.GetType().GetField(fieldName, PublicInstance);
+            field.SetValue(target, value);
+        }
+    }
+}
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