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Game.Citizens.Elderly

Assembly: Assembly-CSharp
Namespace: Game.Citizens

Type: struct

Base: IComponentData, IQueryTypeParameter, IEmptySerializable

Summary: Elderly is an empty marker component (a tag) used by the game's ECS to identify elderly citizens. It contains no payload data; it only marks entities so systems and queries can select or operate on elderly citizens. The struct is annotated with StructLayout(LayoutKind.Sequential, Size = 1) to ensure a non-zero storage size for serialization and runtime layout reasons. Implementing IEmptySerializable integrates it with Colossal Order's custom serialization pipeline, and IQueryTypeParameter allows it to be used directly in EntityQuery / Entities queries.

Fields

  • This type has no instance fields.
    Elderly is an empty struct used purely as a tag.

Properties

  • This type defines no properties.

Constructors

  • public Elderly()
    Structs have an implicit parameterless constructor. No explicit constructors are defined in source.

Methods

  • This type defines no methods.

Usage Example

// Create an entity with the Elderly tag using the EntityManager
var entityManager = World.DefaultGameObjectInjectionWorld.EntityManager;
var elderlyArchetype = entityManager.CreateArchetype(typeof(Elderly));
// Create an entity of that archetype
var elderlyEntity = entityManager.CreateEntity(elderlyArchetype);

// OR add the tag to an existing entity
entityManager.AddComponentData(existingEntity, new Elderly());

// Querying entities with the Elderly tag (example with a simple EntityQuery)
var query = entityManager.CreateEntityQuery(ComponentType.ReadOnly<Elderly>());
using (var entities = query.ToEntityArray(Unity.Collections.Allocator.TempJob))
{
    foreach (var e in entities)
    {
        // operate on elderly entities
    }
}

// With Systems / Entities.ForEach (depending on DOTS version), you can filter by tag:
Entities
    .WithAll<Elderly>()
    .ForEach((Entity e) =>
    {
        // handle elderly entity
    }).Schedule();

Additional notes: - Because Elderly is an empty/tag component, it should not be used to store data. Use separate components for any numeric or structured data. - The StructLayout(Size = 1) ensures the struct is non-zero sized which can be necessary for some serialization/runtime behaviors in the game's engine.