Game.Common.Updated

Assembly: Assembly-CSharp
Namespace: Game.Common

Type: struct

Base: IComponentData, IQueryTypeParameter

Summary:
Updated is an empty/tag component (IComponentData) intended to mark or flag entities that have been "updated" (or otherwise touched) so systems can filter or react to those entities. The type is decorated with [StructLayout(LayoutKind.Sequential, Size = 1)] to give it an explicit non-zero size in memory. It also implements IQueryTypeParameter so it can be used directly with Unity.Entities query APIs (e.g., WithAll(), Without(), etc.).

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Fields

• None.
  This struct contains no fields — it is intentionally an empty/tag component.

Properties

• None.
  There are no properties defined on this type.

Constructors

• Implicit default constructor: public Updated()
  Because the struct has no explicit constructors, the parameterless default constructor is provided by the runtime.

Methods

• None.
  There are no methods defined on this type.

Usage Example

// Add the tag to an entity
EntityManager entityManager = World.DefaultGameObjectInjectionWorld.EntityManager;
Entity entity = entityManager.CreateEntity();
entityManager.AddComponent<Updated>(entity);

// Query for entities that have the Updated tag
public partial class ProcessUpdatedSystem : SystemBase
{
    protected override void OnUpdate()
    {
        // Example: operate only on entities that have the Updated tag
        Entities
            .WithAll<Updated>()
            .ForEach((Entity e, ref SomeComponent comp) =>
            {
                // process component for entities marked as Updated
                comp.value += 1;
            })
            .Schedule();

        // Optionally remove the tag after processing
        // (use EntityCommandBuffer in jobified code paths)
        EntityCommandBuffer ecb = new EntityCommandBuffer(Allocator.Temp);
        Entities.WithAll<Updated>().ForEach((Entity e) =>
        {
            ecb.RemoveComponent<Updated>(e);
        }).Run();
        ecb.Playback(entityManager);
        ecb.Dispose();
    }
}

Notes: - The StructLayout(Size = 1) attribute ensures the type has a defined non-zero size; this can be useful for certain serialization/interop or container scenarios even though the struct carries no data. - Because this is a tag component, prefer query-based filtering (WithAll/Without) or AddComponent/RemoveComponent when marking entities, and use EntityCommandBuffer when modifying component sets inside jobified code.