using Unity.Entities;
using Unity.Mathematics;

namespace ProjectM.Simulation
{
    /// <summary>
    /// Baked singleton describing the training-dummy field to spawn at world start. Consumed once by
    /// the server-only TrainingDummySpawnSystem, which instantiates <see cref="Count"/> dummies from
    /// <see cref="Prefab"/> and then destroys this singleton so the spawn runs exactly once. Not
    /// replicated — dummies are spawned authoritatively on the server and reach clients as ghosts.
    /// </summary>
    public struct TrainingDummySpawner : IComponentData
    {
        /// <summary>Baked entity prefab to instantiate for each dummy.</summary>
        public Entity Prefab;

        /// <summary>Number of dummies to spawn.</summary>
        public int Count;

        /// <summary>World-unit gap between consecutive dummies along the spawn line (X axis).</summary>
        public float Spacing;

        /// <summary>World-space position of the first dummy; subsequent dummies offset by <see cref="Spacing"/>.</summary>
        public float3 Origin;
    }
}