OldThink/Content.Server/Inventory/ServerInventorySystem.cs

using Content.Server.Clothing.Components;
using Content.Server.Storage.Components;
using Content.Server.Storage.EntitySystems;
using Content.Server.Temperature.Systems;
using Content.Shared.Interaction.Events;
using Content.Shared.Inventory;
using Content.Shared.Inventory.Events;
using Robust.Shared.Containers;
using InventoryComponent = Content.Shared.Inventory.InventoryComponent;

namespace Content.Server.Inventory
{
    public sealed class ServerInventorySystem : InventorySystem
    {
        [Dependency] private readonly StorageSystem _storageSystem = default!;

        public override void Initialize()
        {
            base.Initialize();

            SubscribeLocalEvent<InventoryComponent, ModifyChangedTemperatureEvent>(RelayInventoryEvent);

            SubscribeLocalEvent<ClothingComponent, UseInHandEvent>(OnUseInHand);

            SubscribeNetworkEvent<OpenSlotStorageNetworkMessage>(OnOpenSlotStorage);
        }

        private void OnUseInHand(EntityUid uid, ClothingComponent component, UseInHandEvent args)
        {
            if (args.Handled || !component.QuickEquip)
                return;

            QuickEquip(uid, component, args);
        }

        private void OnOpenSlotStorage(OpenSlotStorageNetworkMessage ev, EntitySessionEventArgs args)
        {
            if (args.SenderSession.AttachedEntity is not EntityUid { Valid: true } uid)
                    return;

            if (TryGetSlotEntity(uid, ev.Slot, out var entityUid) && TryComp<ServerStorageComponent>(entityUid, out var storageComponent))
            {
                _storageSystem.OpenStorageUI(entityUid.Value, uid, storageComponent);
            }
        }

        public void TransferEntityInventories(EntityUid uid, EntityUid target)
        {
            if (TryGetContainerSlotEnumerator(uid, out var enumerator))
            {
                Dictionary<string, EntityUid?> inventoryEntities = new();
                var slots = GetSlots(uid);
                while (enumerator.MoveNext(out var containerSlot))
                {
                    //records all the entities stored in each of the target's slots
                    foreach (var slot in slots)
                    {
                        if (TryGetSlotContainer(target, slot.Name, out var conslot, out var _) &&
                            conslot.ID == containerSlot.ID)
                        {
                            inventoryEntities.Add(slot.Name, containerSlot.ContainedEntity);
                        }
                    }
                    //drops everything in the target's inventory on the ground
                    containerSlot.EmptyContainer();
                }
                /// This takes the objects we removed and stored earlier
                /// and actually equips all of it to the new entity
                foreach (var item in inventoryEntities)
                {
                    if (item.Value != null)
                        TryEquip(target, item.Value.Value, item.Key, true);
                }
            }
        }
    }
}