using Unity.Entities;

namespace ProjectM.Simulation
{
    /// <summary>
    /// Baked singleton holding the Blight-clutter ghost prefab + field shape. ExpeditionFieldSystem reads it
    /// (alongside <see cref="ResourceFieldSpawner"/>) to scatter <see cref="Count"/> clutter ghosts within
    /// <see cref="Radius"/> of the expedition origin on the SAME empty-&gt;occupied epoch edge as the resource
    /// field (seeded distinctly so clutter and nodes don't co-locate), and clears them on occupied-&gt;empty.
    /// OPTIONAL — if the singleton is absent, ExpeditionFieldSystem simply skips clutter. Mirrors
    /// <see cref="ResourceFieldSpawner"/>; carries no transform.
    /// </summary>
    public struct ClutterFieldSpawner : IComponentData
    {
        /// <summary>Baked Blight-clutter ghost prefab to instantiate.</summary>
        public Entity Prefab;

        /// <summary>Number of clutter pieces to scatter per expedition.</summary>
        public int Count;

        /// <summary>Scatter radius (world units) around the expedition region origin.</summary>
        public float Radius;
    }
}