tbd-station-14/Content.Shared/Stacks/SharedStackComponent.cs

using System;
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.Serialization.TypeSerializers.Implementations.Custom.Prototype;
using Robust.Shared.ViewVariables;

namespace Content.Shared.Stacks
{
    [NetworkedComponent()]
    public abstract class SharedStackComponent : Component, ISerializationHooks
    {
        public sealed override string Name => "Stack";

        [ViewVariables(VVAccess.ReadWrite)]
        [DataField("stackType", required:true, customTypeSerializer:typeof(PrototypeIdSerializer<StackPrototype>))]
        public string StackTypeId { get; private set; } = string.Empty;

        /// <summary>
        ///     Current stack count.
        ///     Do NOT set this directly, raise the <see cref="StackChangeCountEvent"/> event instead.
        /// </summary>
        [ViewVariables(VVAccess.ReadWrite)]
        [DataField("count")]
        public int Count { get; set; } = 30;

        /// <summary>
        ///     Max amount of things that can be in the stack.
        /// </summary>
        [ViewVariables(VVAccess.ReadOnly)]
        [DataField("max")]
        public int MaxCount { get; set; } = 30;

        [ViewVariables]
        public int AvailableSpace => MaxCount - Count;

        public override ComponentState GetComponentState(ICommonSession player)
        {
            return new StackComponentState(Count, MaxCount);
        }
    }

    [Serializable, NetSerializable]
    public sealed class StackComponentState : ComponentState
    {
        public int Count { get; }
        public int MaxCount { get; }

        public StackComponentState(int count, int maxCount)
        {
            Count = count;
            MaxCount = maxCount;
        }
    }
}