/// <summary>
/// Will attempt to equip or unequip an item to/from the clicked slot. If the user clicked on an occupied slot
/// with some entity, will instead attempt to interact with this entity.
/// </summary>
private void OnUseSlot(UseSlotNetworkMessage ev, EntitySessionEventArgs eventArgs)
{
if (eventArgs.SenderSession.AttachedEntity is not EntityUid {
Valid : true
} actor)
{
return;
}
if (!TryComp(actor, out InventoryComponent? inventory) || !TryComp <SharedHandsComponent>(actor, out var hands))
{
return;
}
hands.TryGetActiveHeldEntity(out var held);
TryGetSlotEntity(actor, ev.Slot, out var itemUid, inventory);
// attempt to perform some interaction
if (held != null && itemUid != null)
{
_interactionSystem.InteractUsing(actor, held.Value, itemUid.Value,
new EntityCoordinates(), predicted: true);
return;
}
// un-equip to hands
if (itemUid != null)
{
if (hands.CanPickupEntityToActiveHand(itemUid.Value) && TryUnequip(actor, ev.Slot, inventory: inventory))
{
hands.PutInHand(itemUid.Value, false);
}
return;
}
// finally, just try to equip the held item.
if (held == null)
{
return;
}
// before we drop the item, check that it can be equipped in the first place.
if (!CanEquip(actor, held.Value, ev.Slot, out var reason))
{
if (_gameTiming.IsFirstTimePredicted)
{
_popup.PopupCursor(Loc.GetString(reason), Filter.Local());
}
return;
}
if (hands.TryDropNoInteraction())
{
TryEquip(actor, actor, held.Value, ev.Slot, predicted: true, inventory: inventory);
}
}
private void OnUseSlot(UseSlotNetworkMessage ev)
{
if (!TryComp <HandsComponent>(ev.Uid, out var hands) || !TryGetSlotEntity(ev.Uid, ev.Slot, out var itemUid))
{
return;
}
var activeHand = hands.GetActiveHandItem;
if (activeHand != null)
{
_interactionSystem.InteractUsing(ev.Uid, activeHand.Owner, itemUid.Value,
new EntityCoordinates());
}
else if (TryUnequip(ev.Uid, ev.Slot))
{
hands.PutInHand(itemUid.Value);
}
}
