tbd-station-14/Content.Shared/Standing/StandingStateComponent.cs

using System;
using Content.Shared.EffectBlocker;
using Robust.Shared.GameObjects;
using Robust.Shared.GameStates;
using Robust.Shared.Players;
using Robust.Shared.Serialization;
using Robust.Shared.Serialization.Manager.Attributes;
using Robust.Shared.ViewVariables;

namespace Content.Shared.Standing
{
    [RegisterComponent]
    [NetworkedComponent]
    public sealed class StandingStateComponent : Component, IEffectBlocker
    {
        public override string Name => "StandingState";

        [ViewVariables(VVAccess.ReadWrite)]
        [DataField("downSoundCollection")]
        public string? DownSoundCollection { get; } = "BodyFall";

        [ViewVariables]
        [DataField("standing")]
        public bool Standing { get; set; } = true;

        public bool CanFall() => Standing;

        public override ComponentState GetComponentState(ICommonSession player)
        {
            return new StandingComponentState(Standing);
        }

        public override void HandleComponentState(ComponentState? curState, ComponentState? nextState)
        {
            base.HandleComponentState(curState, nextState);
            if (curState is not StandingComponentState state) return;

            Standing = state.Standing;
        }

        // I'm not calling it StandingStateComponentState
        [Serializable, NetSerializable]
        private sealed class StandingComponentState : ComponentState
        {
            public bool Standing { get; }

            public StandingComponentState(bool standing)
            {
                Standing = standing;
            }
        }
    }
}