CatStation/Content.Shared/ComponentTable/SharedComponentTableSystem.cs

using Content.Shared.EntityTable;

namespace Content.Shared.ComponentTable;

/// <summary>
/// Applies an entity prototype to an entity on map init. Taken from entities inside an EntityTableSelector.
/// </summary>
public sealed partial class SharedComponentTableSystem : EntitySystem
{
    [Dependency] private EntityTableSystem _entTable = default!;

    public override void Initialize()
    {
        base.Initialize();

        SubscribeLocalEvent<ComponentTableComponent, MapInitEvent>(OnTableInit);
    }

    private void OnTableInit(Entity<ComponentTableComponent> ent, ref MapInitEvent args)
    {
        var spawns = _entTable.GetSpawns(ent.Comp.Table);

        foreach (var entity in spawns)
        {
            if (ProtoMan.Resolve(entity, out var entProto))
            {
                EntityManager.AddComponents(ent, entProto.Components);
            }
        }
    }
}