using Unity.Entities;
using Unity.NetCode;

namespace ProjectM.Simulation
{
    /// <summary>
    /// Destructible "Blight clutter" scattered across the expedition frontier — an ownerless INTERPOLATED ghost
    /// (region-tagged Expedition; the <see cref="ResourceNode"/> sibling) that clients see and smash. The
    /// server-only ResourceHarvestSystem sweeps projectiles against it UNIFIED with node harvesting (so an
    /// overlapping projectile is consumed exactly once — two separate sweeps would double-DestroyEntity the
    /// projectile and throw at ECB playback). Each hit deposits <see cref="ScrapPerHit"/> of
    /// <see cref="ScrapResourceId"/> (a small trickle — "juice + minor scrap", no gating) into the GLOBAL
    /// resource ledger and decrements <see cref="Remaining"/>; the clutter despawns at &lt;= 0.
    /// <see cref="Remaining"/>/<see cref="Variant"/> are [GhostField] so clients can show depletion + pick a smash
    /// visual; <see cref="ScrapResourceId"/>/<see cref="ScrapPerHit"/> are baked, server-only. Distinct from
    /// <see cref="ResourceNode"/> so it carries its own visuals, scatter density and client "clear" feedback while
    /// reusing the exact, tunnel-safe harvest hit-test.
    /// </summary>
    public struct BlightClutter : IComponentData
    {
        /// <summary>Remaining hit-points; the clutter despawns when this reaches 0.</summary>
        [GhostField] public int Remaining;

        /// <summary>Visual variant id (the client picks a mesh/tint; round-robined by the field spawner).</summary>
        [GhostField] public byte Variant;

        /// <summary>Scrap resource yielded per hit (baked; server-only) — see <see cref="ResourceId"/> (Biomass).</summary>
        public byte ScrapResourceId;

        /// <summary>Scrap units yielded per projectile hit (baked; server-only).</summary>
        public float ScrapPerHit;
    }
}