Continue improve archetype ecs

Updated Archetype to support add and remove entity Added EntityManager Added EntityCommandBuffer
2025-12-03 20:40:19 +09:00
parent 63a70f1a74
commit 948fae4401
8 changed files with 614 additions and 124 deletions
--- a/Ghost.ArcEntities/EntityCommandBuffer.cs
+++ b/Ghost.ArcEntities/EntityCommandBuffer.cs
@@ -0,0 +1,110 @@
+using Misaki.HighPerformance.LowLevel.Collections;
+using Misaki.HighPerformance.LowLevel.Utilities;
+
+namespace Ghost.ArcEntities;
+
+public unsafe class EntityCommandBuffer : IDisposable
+{
+    private enum CommandType
+    {
+        CreateEntity,
+        DestroyEntity,
+        AddComponent,
+        RemoveComponent,
+        SetComponent,
+    }
+
+    private struct Command
+    {
+        public UnsafeArray<byte> data;
+        public CommandType type;
+        public Entity entity;
+        public int componentTypeID;
+    }
+
+    private readonly EntityManager _entityManager;
+    private UnsafeList<Command> _commands;
+
+    public EntityCommandBuffer(EntityManager entityManager)
+    {
+        _entityManager = entityManager;
+        _commands = new UnsafeList<Command>(32, Misaki.HighPerformance.LowLevel.Buffer.Allocator.Persistent);
+    }
+
+    public void CreateEntity()
+    {
+        var command = new Command
+        {
+            type = CommandType.CreateEntity,
+            data = default,
+            entity = default,
+            componentTypeID = -1
+        };
+
+        _commands.Add(command);
+    }
+
+    public void DestroyEntity(Entity entity)
+    {
+        var command = new Command
+        {
+            type = CommandType.DestroyEntity,
+            data = default,
+            entity = entity,
+            componentTypeID = -1
+        };
+
+        _commands.Add(command);
+    }
+
+    public void AddComponent<T>(Entity entity, T component)
+        where T : unmanaged
+    {
+        var data = new UnsafeArray<byte>(sizeof(T), Misaki.HighPerformance.LowLevel.Buffer.Allocator.Persistent);
+        MemoryUtility.MemCpy(&component, data.GetUnsafePtr(), (nuint)sizeof(T));
+
+        var command = new Command
+        {
+            type = CommandType.AddComponent,
+            data = data,
+            entity = entity,
+            componentTypeID = ComponentTypeID<T>.value
+        };
+
+        _commands.Add(command);
+    }
+
+    public void RemoveComponent<T>(Entity entity)
+        where T : unmanaged
+    {
+        var command = new Command
+        {
+            type = CommandType.RemoveComponent,
+            data = default,
+            entity = entity,
+            componentTypeID = ComponentTypeID<T>.value
+        };
+
+        _commands.Add(command);
+    }
+
+    public void Reset()
+    {
+        foreach (ref var command in _commands)
+        {
+            command.data.Dispose();
+        }
+
+        _commands.Clear();
+    }
+
+    public void Dispose()
+    {
+        foreach (ref var command in _commands)
+        {
+            command.data.Dispose();
+        }
+
+        _commands.Dispose();
+    }
+}