SVSimServer/SVSim.BattleEngine/Rng/HeadlessNetworkBattleMgr.cs

using Wizard;
using Wizard.BattleMgr;

namespace SVSim.BattleEngine.Rng
{
    // The headless authoritative NETWORK battle mgr — the emitting twin of HeadlessBattleMgr. Emission
    // lives on NetworkBattleManagerBase (NetworkBattleSender's ctor demands one), so the M13 emit read
    // needs this subclass; HeadlessBattleMgr : SingleBattleMgr cannot reach the sender. RNG overrides are
    // identical to HeadlessBattleMgr (the same BattleManagerBase virtuals + RandomSourceBridge), so the
    // M14 rand-list emit reuses this mgr unchanged. M13's deterministic card never exercises a roll.
    public sealed class HeadlessNetworkBattleMgr : NetworkBattleManagerBase
    {
        private readonly IRandomSource _rng;

        public HeadlessNetworkBattleMgr(IBattleMgrContentsCreator contentsCreator, IRandomSource rng = null)
            : base(contentsCreator)
        {
            _rng = rng ?? new SeededRandomSource(contentsCreator.RandomSeed);
        }

        public override int StableRandom(int val)
        {
            double unit = _rng.NextUnit();
            randomResult = unit;
            return RandomSourceBridge.Range(val, unit);
        }

        public override double StableRandomDouble()
        {
            double unit = _rng.NextUnit();
            randomResult = unit;
            return unit;
        }

        public override int StableRandomOnlySelf(int val) => _rng.NextSelf(val);
    }
}