reworkpool system/ add new pools

src/EcsQuery.cs

@@ -53,16 +53,16 @@ namespace DCFApixels.DragonECS
             public override inc_<TComponent> Include<TComponent>() where TComponent : struct
             {
                 _inc.Add(_world.GetComponentID<TComponent>());
-                return new inc_<TComponent>(_world.GetOrCreatePool<TComponent>());
+                return new inc_<TComponent>(_world.GetPool<TComponent, EcsPool<TComponent>>());
             }
             public override exc_<TComponent> Exclude<TComponent>() where TComponent : struct
             {
                 _exc.Add(_world.GetComponentID<TComponent>());
-                return new exc_<TComponent>(_world.GetOrCreatePool<TComponent>());
+                return new exc_<TComponent>(_world.GetPool<TComponent, EcsPool<TComponent>>());
             }
             public override opt_<TComponent> Optional<TComponent>() where TComponent : struct
             {
-                return new opt_<TComponent>(_world.GetOrCreatePool<TComponent>());
+                return new opt_<TComponent>(_world.GetPool<TComponent, EcsPool<TComponent>>());
             }
 
             private void End(out EcsQueryMask mask)
@@ -93,7 +93,8 @@ namespace DCFApixels.DragonECS
         private ProfilerMarker _getEnumerator = new ProfilerMarker("EcsGraphQuery.Execute");
         protected sealed override void OnBuildAfter()
         {
-            attachPool = World.GetOrCreatePool<Edge>();
+            throw new NotImplementedException();
+           // attachPool = World.GetPool<Edge>();
         }
         public sealed override void Execute()
         {

src/EcsQueryMember.cs

@@ -81,80 +81,4 @@ namespace DCFApixels.DragonECS
         public static implicit operator opt_<TComponent>(EcsQueryBuilderBase buider) => buider.Optional<TComponent>();
     }
     #endregion
-
-   // #region select_readonly
-   // [StructLayout(LayoutKind.Sequential, Pack = 8, Size = 8)]
-   // public readonly struct inc_readonly_<T> : IEcsQueryReadonlyField<T>
-   //     where T : struct
-   // {
-   //     internal readonly EcsPool<T> pool;
-   //     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-   //     internal inc_readonly_(EcsPool<T> pool) => this.pool = pool;
-   //     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-   //     public ref T Read(ent entityID) => ref pool.Read(entityID.uniqueID);
-   //     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-   //     public bool Has(ent entityID) => pool.Has(entityID.uniqueID);
-   //     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-   //
-   //     public static implicit operator inc_readonly_<T>(EcsQueryBuilderBase buider) => buider.Include<T>();
-   //     public static implicit operator inc_readonly_<T>(inc_<T> o) => new inc_readonly_<T>(o.pool);
-   // }
-   //
-   // [StructLayout(LayoutKind.Sequential, Pack = 8, Size = 8)]
-   // public readonly struct exc_readonly_<T> : IEcsQueryReadonlyField<T>
-   //     where T : struct
-   // {
-   //     internal readonly EcsPool<T> pool;
-   //     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-   //     internal exc_readonly_(EcsPool<T> pool) => this.pool = pool;
-   //     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-   //     public ref T Read(ent entityID) => ref pool.Read(entityID.uniqueID);
-   //     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-   //     public bool Has(ent entityID) => pool.Has(entityID.uniqueID);
-   //     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-   //
-   //     public static implicit operator exc_readonly_<T>(EcsQueryBuilderBase buider) => buider.Exclude<T>();
-   //     public static implicit operator exc_readonly_<T>(exc_<T> o) => new exc_readonly_<T>(o.pool);
-   // }
-   //
-   // [StructLayout(LayoutKind.Sequential, Pack = 8, Size = 8)]
-   // public readonly struct opt_readonly_<T> : IEcsQueryReadonlyField<T>
-   //     where T : struct
-   // {
-   //     internal readonly EcsPool<T> pool;
-   //     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-   //     internal opt_readonly_(EcsPool<T> pool) => this.pool = pool;
-   //     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-   //     public ref T Read(ent entityID) => ref pool.Read(entityID.uniqueID);
-   //     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-   //     public bool Has(ent entityID) => pool.Has(entityID.uniqueID);
-   //     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-   //
-   //     public static implicit operator opt_readonly_<T>(EcsQueryBuilderBase buider) => buider.Optional<T>();
-   //     public static implicit operator opt_readonly_<T>(opt_<T> o) => new opt_readonly_<T>(o.pool);
-   // }
-   // #endregion
-   //
-   // #region join
-   // [StructLayout(LayoutKind.Sequential, Pack = 8, Size = 8)]
-   // public readonly struct attach : IEcsQueryField<Edge>
-   // {
-   //     internal readonly EcsPool<Edge> pool;
-   //     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-   //     internal attach(EcsPool<Edge> pool) => this.pool = pool;
-   //     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-   //     public ref Edge Add(ent entityID) => ref pool.Add(entityID.uniqueID);
-   //     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-   //     public ref Edge Write(ent entityID) => ref pool.Write(entityID.uniqueID);
-   //     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-   //     public ref Edge Read(ent entityID) => ref pool.Read(entityID.uniqueID);
-   //     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-   //     public bool Has(ent entityID) => pool.Has(entityID.uniqueID);
-   //     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-   //     public void Del(ent entityID) => pool.Del(entityID.uniqueID);
-   //     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-   //     public static implicit operator attach(EcsQueryBuilderBase buider) => buider.Include<Edge>();
-   //     public static implicit operator attach(inc_<Edge> o) => new attach(o.pool);
-   // }
-   // #endregion
 }

src/EcsWorld.cs

@@ -41,7 +41,7 @@ namespace DCFApixels.DragonECS
         private int[] _delEntBuffer;
         private int _delEntBufferCount;
 
-        private IEcsPool[] _pools;
+        private EcsPoolBase[] _pools;
         private EcsNullPool _nullPool;
 
         private EcsQueryBase[] _queries;
@@ -55,7 +55,7 @@ namespace DCFApixels.DragonECS
         private IEcsEntityDestroy _entityDestry;
 
         #region GetterMethods
-        public ReadOnlySpan<IEcsPool> GetAllPools() => new ReadOnlySpan<IEcsPool>(_pools);
+        public ReadOnlySpan<EcsPoolBase> GetAllPools() => new ReadOnlySpan<EcsPoolBase>(_pools);
         public int GetComponentID<T>() => WorldMetaStorage.GetComponentId<T>(_worldArchetypeID);////ComponentType<TWorldArchetype>.uniqueID;
 
         #endregion
@@ -83,7 +83,7 @@ namespace DCFApixels.DragonECS
             if (!_pipeline.IsInit) pipline.Init();
             _entityDispenser = new IntDispenser(0);
             _nullPool = EcsNullPool.instance;
-            _pools = new IEcsPool[512];
+            _pools = new EcsPoolBase[512];
             ArrayUtility.Fill(_pools, _nullPool);
 
             _gens = new short[512];
@@ -121,7 +121,7 @@ namespace DCFApixels.DragonECS
         #endregion
 
         #region GetPool
-        public IEcsPool<TComponent> GetOrCreatePool<TComponent>(Func<EcsWorld, IEcsPool> builder) where TComponent : struct
+        public TPool GetPool<TComponent, TPool>() where TComponent : struct where TPool : EcsPoolBase, new()
         {
             int uniqueID = WorldMetaStorage.GetComponentId<TComponent>(_worldArchetypeID);
 
@@ -133,9 +133,15 @@ namespace DCFApixels.DragonECS
             }
 
             if (_pools[uniqueID] == _nullPool)
-                _pools[uniqueID] = builder(this);
+            {
+                var pool = new TPool();
+                _pools[uniqueID] = pool;
+                pool.InvokeInit(this);
 
-            return (IEcsPool<TComponent>)_pools[uniqueID];
+                //EcsDebug.Print(pool.GetType().FullName);
+            }
+
+            return (TPool)_pools[uniqueID];
         }
         #endregion
 
@@ -202,7 +208,7 @@ namespace DCFApixels.DragonECS
                     }
                 }
                 foreach (var item in _pools)
-                    item.OnWorldResize(_gens.Length);
+                    item.InvokeOnWorldResize(_gens.Length);
             }
             _gens[entityID] |= short.MinValue;
             EcsEntity entity = new EcsEntity(entityID, _gens[entityID]++, uniqueID);

src/Entities/EcsEntity.cs

@@ -22,7 +22,8 @@ namespace DCFApixels.DragonECS
         public readonly short world;
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public ent ToEnt() => EcsWorld.Worlds[world].EntityIsAlive(id, gen) ? new ent(id) : default;
+        //public ent ToEnt() => EcsWorld.Worlds[world].EntityIsAlive(id, gen) ? new ent(id) : default;
+        public ent ToEnt() => new ent(id);
 
         #region Constructors
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
@@ -72,10 +73,6 @@ namespace DCFApixels.DragonECS
     public readonly partial struct EcsEntity
     {
         private static EcsProfilerMarker _IsNullMarker = new EcsProfilerMarker("EcsEntity.IsNull");
-        private static EcsProfilerMarker _ReadMarker = new EcsProfilerMarker("EcsEntity.Read");
-        private static EcsProfilerMarker _WriteMarker = new EcsProfilerMarker("EcsEntity.Write");
-        private static EcsProfilerMarker _HasMarker = new EcsProfilerMarker("EcsEntity.Has");
-        private static EcsProfilerMarker _DelMarker = new EcsProfilerMarker("EcsEntity.Del");
 
         public bool IsNull
         {
@@ -86,43 +83,6 @@ namespace DCFApixels.DragonECS
                 return this == NULL;
             }
         }
-
-        public ref readonly T Read<T>()
-            where T : struct
-        {
-            //using (_ReadMarker.Auto())
-            return ref EcsWorld.Worlds[world].GetOrCreatePool<T>().Read(id);
-        }
-
-        public ref T Add<T>()
-            where T : struct
-        {
-            return ref EcsWorld.Worlds[world].GetOrCreatePool<T>().Add(id);
-        }
-        public ref T Write<T>()
-            where T : struct
-        {
-            //using (_WriteMarker.Auto())
-            return ref EcsWorld.Worlds[world].GetOrCreatePool<T>().Write(id);
-        }
-        public bool Has<T>()
-            where T : struct
-        {
-            //using (_HasMarker.Auto())
-            return EcsWorld.Worlds[world].GetOrCreatePool<T>().Has(id);
-        }
-        public bool NotHas<T>()
-            where T : struct
-        {
-            //using (_HasMarker.Auto())
-            return EcsWorld.Worlds[world].GetOrCreatePool<T>().Has(id);
-        }
-        public void Del<T>()
-            where T : struct
-        {
-            //using (_DelMarker.Auto())
-            EcsWorld.Worlds[world].GetOrCreatePool<T>().Del(id);
-        }
     } 
 
     public static partial class entExtensions

src/Interfaces/IEcsTable.cs

@@ -15,8 +15,8 @@ namespace DCFApixels.DragonECS
 
         #region Methods
         public int GetComponentID<T>();
-        public IEcsPool<TComponent> GetOrCreatePool<TComponent>(Func<EcsWorld, IEcsPool> builder) where TComponent : struct;
+        public TPool GetPool<TComponent, TPool>() where TComponent : struct where TPool : EcsPoolBase, new();
-        public ReadOnlySpan<IEcsPool> GetAllPools();
+        public ReadOnlySpan<EcsPoolBase> GetAllPools();
         public TQuery Where<TQuery>(out TQuery query) where TQuery : EcsQueryBase;
         public TQuery Select<TQuery>() where TQuery : EcsQueryBase;
 

src/Pools/EcsNotNullPool.cs

@@ -0,0 +1,111 @@
+using System;
+using System.Runtime.CompilerServices;
+using Unity.Profiling;
+
+namespace DCFApixels.DragonECS
+{
+    public sealed class EcsNotNullPool<T> : EcsPoolBase
+        where T : struct
+    {
+        private EcsWorld _source;
+
+        private bool[] _entityFlags;// index = entityID / value = entityFlag;/ value = 0 = no entityID
+        private T[] _items; //sparse
+        private int _count;
+
+        private IEcsComponentReset<T> _componentResetHandler;
+        private PoolRunners _poolRunners;
+
+        #region Properites
+        public int Count => _count;
+        public int Capacity => _items.Length;
+        public sealed override EcsWorld World => _source;
+        public sealed override Type ComponentType => typeof(T);
+        #endregion
+
+        #region Init
+        protected override void Init(EcsWorld world)
+        {
+            _source = world;
+
+            _entityFlags = new bool[world.Capacity];
+            _items = new T[world.Capacity];
+            _count = 0;
+
+            _componentResetHandler = EcsComponentResetHandler<T>.instance;
+            _poolRunners = new PoolRunners(world.Pipeline);
+        }
+        #endregion
+
+        #region Write/Read/Has/Del
+        private ProfilerMarker _addMark = new ProfilerMarker("EcsPoo.Add");
+        private ProfilerMarker _writeMark = new ProfilerMarker("EcsPoo.Write");
+        private ProfilerMarker _readMark = new ProfilerMarker("EcsPoo.Read");
+        private ProfilerMarker _hasMark = new ProfilerMarker("EcsPoo.Has");
+        private ProfilerMarker _delMark = new ProfilerMarker("EcsPoo.Del");
+        public ref T Add(int entityID)
+        {
+            // using (_addMark.Auto())
+            //  {
+            ref bool entityFlag = ref _entityFlags[entityID];
+            if (entityFlag == false)
+            {
+                entityFlag = true;
+                _count++;
+                _poolRunners.add.OnComponentAdd<T>(entityID);
+            }
+            _poolRunners.write.OnComponentWrite<T>(entityID);
+            return ref _items[entityID];
+            // }
+        }
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public ref T Write(int entityID)
+        {
+            //   using (_writeMark.Auto())
+            _poolRunners.write.OnComponentWrite<T>(entityID);
+            return ref _items[entityID];
+        }
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public ref readonly T Read(int entityID)
+        {
+            //  using (_readMark.Auto())
+            return ref _items[entityID];
+        }
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public sealed override bool Has(int entityID)
+        {
+            //  using (_hasMark.Auto())
+            return _entityFlags[entityID];
+        }
+        public void Del(int entityID)
+        {
+            //  using (_delMark.Auto())
+            //   {
+            _componentResetHandler.Reset(ref _items[entityID]);
+            _entityFlags[entityID] = false;
+            _count--;
+            _poolRunners.del.OnComponentDel<T>(entityID);
+            //   }
+        }
+        #endregion
+
+        #region WorldCallbacks
+        protected override void OnWorldResize(int newSize)
+        {
+            Array.Resize(ref _entityFlags, newSize);
+            Array.Resize(ref _items, newSize);
+        }
+        protected override void OnDestroy() { }
+        #endregion
+    }
+
+    public interface INotNullComponent { }
+    public static class INotNullComponentExt
+    {
+        public static EcsNotNullPool<TComponent> GetPool<TComponent>(this EcsWorld self)
+            where TComponent : struct, INotNullComponent
+        {
+            return self.GetPool<TComponent, EcsNotNullPool<TComponent>>();
+        } 
+    }
+}

src/Pools/EcsPool.cs

@@ -4,104 +4,55 @@ using Unity.Profiling;
 
 namespace DCFApixels.DragonECS
 {
-    public interface IEcsPoolBase
+    public abstract class EcsPoolBase
-    {
-        #region Properties
-        public Type ComponentType { get; }
-        public EcsWorld World { get; }
-        public int Count { get; }
-        public int Capacity { get; }
-        #endregion
-
-        #region Methods
-        public bool Has(int entityID);
-        #endregion
-    }
-    public interface IEcsReadonlyPool : IEcsPoolBase
-    {
-        #region Methods
-        public object Get(int entityID);
-        #endregion
-    }
-    public interface IEcsPool : IEcsReadonlyPool
-    {
-        #region Methods
-        public void AddOrWrite(int entityID, object data);
-        public void Del(int entityID);
-        #endregion
-    }
-    public interface IEcsReadonlyPool<T> : IEcsReadonlyPool where T : struct
-    {
-        public ref readonly T Read(int entityID);
-    }
-    public interface IEcsPool<T> : IEcsPool, IEcsReadonlyPool<T> where T : struct
-    {
-        public ref T Add(int entityID);
-        public ref T Write(int entityID);
-
-    }
-
-    public abstract class EcsPoolBase<T> : IEcsPoolBase
-        where T : struct
     {
         #region Properties
         public abstract Type ComponentType { get; }
         public abstract EcsWorld World { get; }
-        public abstract int Count { get; }
-        public abstract int Capacity { get; }
         #endregion
 
         #region Methods
         public abstract bool Has(int entityID);
 
+        protected abstract void Init(EcsWorld world);
         protected abstract void OnWorldResize(int newSize);
         protected abstract void OnDestroy();
         #endregion
 
         #region Internal
+        internal void InvokeInit(EcsWorld world) => Init(world);
         internal void InvokeOnWorldResize(int newSize) => OnWorldResize(newSize);
         internal void InvokeOnDestroy() => OnDestroy();
         #endregion
     }
 
     public struct NullComponent { }
-    public sealed class EcsNullPool : EcsPoolBase<NullComponent>
+    public sealed class EcsNullPool : EcsPoolBase
     {
         public static EcsNullPool instance => new EcsNullPool(null);
         private EcsWorld _source;
-        private NullComponent fakeComponent;
         private EcsNullPool(EcsWorld source) => _source = source;
 
         #region Properties
         public sealed override Type ComponentType => typeof(NullComponent);
         public sealed override EcsWorld World => _source;
-        public sealed override int Count => 0;
-        public sealed override int Capacity => 1;
         #endregion
 
         #region Methods
-        public sealed override ref NullComponent Add(int entity) => ref fakeComponent;
         public sealed override bool Has(int index) => false;
-        public sealed override ref readonly NullComponent Read(int entity) => ref fakeComponent;
-        public sealed override ref NullComponent Write(int entity) => ref fakeComponent;
-        public sealed override void Del(int index) { }
         #endregion
 
-        #region WorldCallbacks
+        #region Callbacks
+        protected override void Init(EcsWorld world) { }
         protected override void OnWorldResize(int newSize) { }
         protected override void OnDestroy() { }
         #endregion
     }
 
-    public sealed class EcsPool<T> : EcsPoolBase<T>
+    public sealed class EcsPool<T> : EcsPoolBase
         where T : struct
     {
-        public static EcsPool<T> Builder(EcsWorld source)
+        private EcsWorld _source;
-        {
-            return new EcsPool<T>(source, 512, new PoolRunners(source.Pipeline));
-        }
-
-        private readonly EcsWorld _source;
 
         private int[] _mapping;// index = entityID / value = itemIndex;/ value = 0 = no entityID
         private T[] _items; //dense
@@ -113,25 +64,26 @@ namespace DCFApixels.DragonECS
         private PoolRunners _poolRunners;
 
         #region Properites
-        public sealed override int Count => _itemsCount;
+        public int Count => _itemsCount;
-        public sealed override int Capacity => _items.Length;
+        public int Capacity => _items.Length;
         public sealed override EcsWorld World => _source;
         public sealed override Type ComponentType => typeof(T);
         #endregion
 
-        #region Constructors
+        #region Init
-        internal EcsPool(EcsWorld source, int capacity, PoolRunners poolRunners)
+        protected override void Init(EcsWorld world)
         {
-            _source = source;
+            const int capacity = 512;
+            _source = world;
 
-            _mapping = new int[source.Capacity];
+            _mapping = new int[world.Capacity];
             _recycledItems = new int[128];
             _recycledItemsCount = 0;
             _items = new T[capacity];
             _itemsCount = 0;
 
             _componentResetHandler = EcsComponentResetHandler<T>.instance;
-            _poolRunners = poolRunners;
+            _poolRunners = new PoolRunners(world.Pipeline);
         }
         #endregion
 
@@ -141,7 +93,7 @@ namespace DCFApixels.DragonECS
         private ProfilerMarker _readMark = new ProfilerMarker("EcsPoo.Read");
         private ProfilerMarker _hasMark = new ProfilerMarker("EcsPoo.Has");
         private ProfilerMarker _delMark = new ProfilerMarker("EcsPoo.Del");
-        public sealed override ref T Add(int entityID)
+        public ref T Add(int entityID)
         {
             // using (_addMark.Auto())
             //  {
@@ -168,14 +120,14 @@ namespace DCFApixels.DragonECS
             // }
         }
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public sealed override ref T Write(int entityID)
+        public ref T Write(int entityID)
         {
             //   using (_writeMark.Auto())
             _poolRunners.write.OnComponentWrite<T>(entityID);
             return ref _items[_mapping[entityID]];
         }
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public sealed override ref readonly T Read(int entityID)
+        public ref readonly T Read(int entityID)
         {
             //  using (_readMark.Auto())
             return ref _items[_mapping[entityID]];
@@ -186,7 +138,7 @@ namespace DCFApixels.DragonECS
             //  using (_hasMark.Auto())
             return _mapping[entityID] > 0;
         }
-        public sealed override void Del(int entityID)
+        public void Del(int entityID)
         {
             //  using (_delMark.Auto())
             //   {
@@ -210,4 +162,14 @@ namespace DCFApixels.DragonECS
         protected override void OnDestroy() { }
         #endregion
     }
+
+    public interface IComponent { }
+    public static class IComponentExt
+    {
+        public static EcsPool<TComponent> GetPool<TComponent>(this EcsWorld self)
+            where TComponent : struct, IComparable
+        {
+            return self.GetPool<TComponent, EcsPool<TComponent>>();
+        } 
+    }
 }

src/Pools/EcsSinglePool.cs

@@ -0,0 +1,105 @@
+using System;
+using System.Runtime.CompilerServices;
+using Unity.Profiling;
+
+namespace DCFApixels.DragonECS
+{
+    public sealed class EcsSinglePool<T> : EcsPoolBase
+         where T : struct
+    {
+        private EcsWorld _source;
+
+        private int[] _mapping;// index = entityID / value = itemIndex;/ value = 0 = no entityID
+        //private T[] _items; //dense
+        //private int _count;
+        //private int[] _recycledItems;
+        //private int _recycledItemsCount;
+
+        private int _count;
+        private T _component;
+
+        private PoolRunners _poolRunners;
+
+        #region Properites
+        public int Count => _count;
+        public sealed override EcsWorld World => _source;
+        public sealed override Type ComponentType => typeof(T);
+        #endregion
+
+        #region Init
+        protected override void Init(EcsWorld world)
+        {
+            _source = world;
+            _mapping = new int[world.Capacity];
+            _count = 0;
+            _poolRunners = new PoolRunners(world.Pipeline);
+        }
+        #endregion
+
+        #region Write/Read/Has/Del
+        private ProfilerMarker _addMark = new ProfilerMarker("EcsPoo.Add");
+        private ProfilerMarker _writeMark = new ProfilerMarker("EcsPoo.Write");
+        private ProfilerMarker _readMark = new ProfilerMarker("EcsPoo.Read");
+        private ProfilerMarker _hasMark = new ProfilerMarker("EcsPoo.Has");
+        private ProfilerMarker _delMark = new ProfilerMarker("EcsPoo.Del");
+        public ref T Add(int entityID)
+        {
+            // using (_addMark.Auto())
+            //  {
+            if (_mapping[entityID] <= 0)
+            {
+                _mapping[entityID] = ++_count;
+                _poolRunners.add.OnComponentAdd<T>(entityID);
+            }
+            return ref _component;
+            // }
+        }
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public ref T Write(int entityID)
+        {
+            //   using (_writeMark.Auto())
+            _poolRunners.write.OnComponentWrite<T>(entityID);
+            return ref _component;
+        }
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public ref readonly T Read(int entityID)
+        {
+            //  using (_readMark.Auto())
+            return ref _component;
+        }
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public sealed override bool Has(int entityID)
+        {
+            //  using (_hasMark.Auto())
+            return _mapping[entityID] > 0;
+        }
+        public void Del(int entityID)
+        {
+            //  using (_delMark.Auto())
+            //   {
+            _mapping[entityID] = 0;
+            _count--;
+            _poolRunners.del.OnComponentDel<T>(entityID);
+            //   }
+        }
+        #endregion
+
+        #region WorldCallbacks
+        protected override void OnWorldResize(int newSize)
+        {
+            Array.Resize(ref _mapping, newSize);
+        }
+        protected override void OnDestroy() { }
+        #endregion
+    }
+
+    public interface ISingleComponent { }
+    public static class ISingleComponentExt
+    {
+        public static EcsTagPool<TSingleComponent> GetPool<TSingleComponent>(this EcsWorld self)
+            where TSingleComponent : struct, ISingleComponent
+        {
+            return self.GetPool<TSingleComponent, EcsTagPool<TSingleComponent>>();
+        } 
+    }
+}

src/Pools/EcsTagPool.cs

@@ -0,0 +1,85 @@
+using System;
+using System.Runtime.CompilerServices;
+using Unity.Profiling;
+
+namespace DCFApixels.DragonECS
+{
+    public sealed class EcsTagPool<T> : EcsPoolBase
+        where T : struct
+    {
+        private EcsWorld _source;
+
+        private int[] _mapping;// index = entityID / value = itemIndex;/ value = 0 = no entityID
+        private int _count;
+
+        private PoolRunners _poolRunners;
+
+        #region Properites
+        public int Count => _count;
+        public sealed override EcsWorld World => _source;
+        public sealed override Type ComponentType => typeof(T);
+        #endregion
+
+        #region Init
+        protected override void Init(EcsWorld world)
+        {
+            _source = world;
+
+            _mapping = new int[world.Capacity];
+            _count = 0;
+
+            _poolRunners = new PoolRunners(world.Pipeline);
+        }
+        #endregion
+
+        #region Add/Has/Del
+        private ProfilerMarker _addMark = new ProfilerMarker("EcsPoo.Add");
+        private ProfilerMarker _hasMark = new ProfilerMarker("EcsPoo.Has");
+        private ProfilerMarker _delMark = new ProfilerMarker("EcsPoo.Del");
+        public void Add(int entityID)
+        {
+            // using (_addMark.Auto())
+            //  {
+            if (_mapping[entityID] <= 0)
+            {
+                _mapping[entityID] = ++_count;
+                _poolRunners.add.OnComponentAdd<T>(entityID);
+            }
+            // }
+        }
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public sealed override bool Has(int entityID)
+        {
+            //  using (_hasMark.Auto())
+            return _mapping[entityID] > 0;
+        }
+        public void Del(int entityID)
+        {
+            //  using (_delMark.Auto())
+            //   {
+            _mapping[entityID] = 0;
+            _count--;
+            _poolRunners.del.OnComponentDel<T>(entityID);
+            //   }
+        }
+        #endregion
+
+        #region WorldCallbacks
+        protected override void OnWorldResize(int newSize)
+        {
+            Array.Resize(ref _mapping, newSize);
+        }
+        protected override void OnDestroy() { }
+        #endregion
+    }
+
+    public interface ITagComponent { }
+    public static class ITagComponentExt
+    {
+        public static EcsTagPool<TTagComponent> GetPool<TTagComponent>(this EcsWorld self)
+            where TTagComponent : struct, ITagComponent
+        {
+            return self.GetPool<TTagComponent, EcsTagPool<TTagComponent>>();
+        } 
+    }
+}

src/TestPool.cs

@@ -1,134 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace DCFApixels.DragonECS.Test
-{
-    public class TestWorld
-    {
-        public PoolToken RegisterPool<TComponent>()
-        {
-            return new PoolToken(1);
-        }
-
-        public IEcsPool GetPoolX()
-        {
-            return null;
-        }
-    }
-
-    public readonly struct PoolToken
-    {
-        internal readonly ushort id;
-        public PoolToken(ushort id)
-        {
-            this.id = id;
-        }
-    }
-    //реализовать query так чтоб на вход он получал какуюто коллекцию и заполнял ее. по итогу на выходе запроса юзер будет иметь просто список
-    //таким образом во первых он сам может решить как его прокрутить, через for или foreach или еще как. во вторых можно будет прикрутить поддержку nativearray от unity
-
-    public class TestPool<TComponent>
-    {
-        private PoolToken _token;
-        public TestPool(TestWorld world)
-        {
-            _token = world.RegisterPool<TComponent>();
-        }
-    }
-
-    public interface IPool { }
-    public class Pool1<TComponent> : EcsPoolBase<TComponent>
-        where TComponent : struct
-    {
-        public override Type ComponentType => throw new NotImplementedException();
-
-        public override EcsWorld World => throw new NotImplementedException();
-
-        public override int Count => throw new NotImplementedException();
-
-        public override int Capacity => throw new NotImplementedException();
-
-        public override ref TComponent Add(int entityID)
-        {
-            throw new NotImplementedException();
-        }
-
-        public override void Del(int entityID)
-        {
-            throw new NotImplementedException();
-        }
-
-        public override bool Has(int entityID)
-        {
-            throw new NotImplementedException();
-        }
-
-        public override ref readonly TComponent Read(int entityID)
-        {
-            throw new NotImplementedException();
-        }
-
-        public override ref TComponent Write(int entityID)
-        {
-            throw new NotImplementedException();
-        }
-
-        protected override void OnDestroy()
-        {
-            throw new NotImplementedException();
-        }
-
-        protected override void OnWorldResize(int newSize)
-        {
-            throw new NotImplementedException();
-        }
-    }
-
-    public interface IComponentPool<TPool, TComponent>
-        where TPool : IEcsPool<TComponent>
-        where TComponent : struct
-    { }
-
-    public interface IComponent1<TComponent> : IComponentPool<Pool1<TComponent>, TComponent>
-        where TComponent : struct
-    { }
-    public interface IComponent2<TComponent> : IComponentPool<EcsPool<TComponent>, TComponent>
-        where TComponent : struct
-    { }
-
-    public struct ComponentX1 : IComponent1<ComponentX1> { }
-    public struct ComponentX2 : IComponent2<ComponentX2> { }
-
-    public static class Pool1Ext
-    {
-        public static Pool1<TComponent> GetPool<TComponent>(this TestWorld self)
-            where TComponent : struct, IComponent1<TComponent>
-        {
-            return (Pool1<TComponent>)self.GetPoolX();
-        }
-    }
-
-    public static class Pool2Ext
-    {
-        public static EcsPool<TComponent> GetPool<TComponent>(this TestWorld self)
-            where TComponent : struct, IComponent2<TComponent>
-        {
-            return (EcsPool<TComponent>)self.GetPoolX();
-        }
-    }
-
-    public class Foo
-    {
-        private TestWorld world;
-        public void Do()    
-        {
-            var poola = world.GetPool<ComponentX1>();
-        }
-    }
-
-
-}
-