using Unity.Entities;
using Unity.Mathematics;

namespace ProjectM.Simulation
{
    /// <summary>
    /// MC-1 — predicted, NON-replicated dash window on the owner-predicted player. A SHAPE-clone of
    /// <c>KnockbackState</c>, but UNLIKE KnockbackState it lives on a PREDICTED player and is re-simulated from
    /// the replicated <see cref="PlayerInput.Dash"/> InputEvent every predicted tick — so it is authoritative on
    /// the server at the tick <c>HealthApplyDamageSystem</c> drains damage, even for a melee strike appended a
    /// tick earlier in the plain group. All ticks routed through <c>TickUtil.NonZero</c>; compared via
    /// <see cref="Unity.NetCode.NetworkTick"/> only (never raw uint). NOT a <c>[GhostField]</c> (no player-ghost
    /// re-bake). Baked all-zero (idle).
    /// </summary>
    public struct DashState : IComponentData
    {
        /// <summary>Planar XZ dash heading, captured at dash-start.</summary>
        public float2 Dir;

        /// <summary>Raw ServerTick at dash-start (NonZero-coerced). Lower (inclusive) bound of the i-frame window.</summary>
        public uint StartTick;

        /// <summary>StartTick + i-frame window (NonZero). I-frames cover the HALF-OPEN range [StartTick, IFrameUntilTick).</summary>
        public uint IFrameUntilTick;

        /// <summary>IFrameUntilTick + recovery tail (NonZero). Movement-lock tail (no i-frames) so a panic-dash is punishable.</summary>
        public uint RecoverUntilTick;

        /// <summary>Hits negated by THIS dash's i-frame window. SERVER-written (HealthApplyDamageSystem);
        /// 0 at window-close = a wasted dash (DevTelemetry.DashesWasted spam signal). The client copy stays 0.</summary>
        public uint NegatedCount;
    }
}