using ProjectM.Simulation;
using Unity.Entities;
using UnityEngine;

namespace ProjectM.Authoring
{
    /// <summary>
    /// Authoring for the baked <see cref="CoverFieldSpawner"/> singleton (mirrors ClutterFieldSpawnerAuthoring).
    /// Place once in the gameplay subscene and assign the CoverRock ghost prefab; RoomFieldSystem scatters
    /// destructible cover per room (never in Boss rooms) with an origin keep-out. Carries no transform.
    /// </summary>
    public class CoverFieldSpawnerAuthoring : MonoBehaviour
    {
        [Tooltip("CoverRock ghost prefab: BlightClutterAuthoring (ScrapPerHit=0, Variant=4) + an Environment-layer collider + a GhostAuthoringComponent (ownerless, interpolated).")]
        public GameObject CoverPrefab;

        [Tooltip("Cover rocks per room (Boss rooms get none).")]
        [Min(0)] public int Count = 3;

        private class CoverFieldSpawnerBaker : Baker<CoverFieldSpawnerAuthoring>
        {
            public override void Bake(CoverFieldSpawnerAuthoring authoring)
            {
                var entity = GetEntity(authoring, TransformUsageFlags.None);
                AddComponent(entity, new CoverFieldSpawner
                {
                    Prefab = authoring.CoverPrefab != null
                        ? GetEntity(authoring.CoverPrefab, TransformUsageFlags.Dynamic)
                        : Entity.Null,
                    Count = authoring.Count,
                });
            }
        }
    }
}