Detecting when a player manually sells or destroys an item?

[Nandchan]

As the title implies, I'm trying to detect if a player has manually sold or destroyed an item.

There don't really seem to be any events that are indicative of this happening, at least none I can tell.

I did a trace of selling an item and it looks something like this:

ITEM_LOCK_CHANGED (bagID = 0, slot = 2)
ITEM_LOCKED (bagID = 0, slot = 2)
BAG_UPDATE (containerID = 0)
PLAYER_MONEY
MERCHANT_UPDATE
BAG_UPDATE_DELAYED

which doesn't exactly seem very useful.

I could perhaps listen for MERCHANT_UPDATE and check the merchant's buy-back tab (how?) to see if an item was added to the list, but I'm not sure how much of a reliable/smart idea that is - and plus it doesn't work for deleting items at all.

For deleting an item, it looks like this:

DELETE_ITEM_CONFIRM (Item name = Blacksmith Hammer, 1, 0, 0)
ITEM_LOCK_CHANGED (bagID = 0, slot = 4)
ITEM_UNLOCKED (bagID = 0, slot = 4)
BAG_UPDATE (container ID = 0)
BAG_UPDATE_DELAYED

I could try remembering the item names off any DELETE_ITEM_CONFIRM prompts, followed by looking at BAG_UPDATE to see if that item was actually removed - but it also seems rather brittle and inelegant.

Does anybody have any ideas as for how I could do this in a clean and elegant way?

[Phanx]

Well, for deleting, that event sequence looks pretty straightforward:

1. When you see DELETE_ITEM_CONFIRM, store the name in a temporary variable.
2. When you see ITEM_LOCK_CHANGED, get info about the item in the indicated bag/slot. If the name matches what you saw in #1, you now have the item ID, full item link, or whatever other info you want to keep about the item being deleted.

You could probably add a #3 where you verify that the item was successfully deleted when you see ITEM_UNLOCKED or BAG_UPDATE, but it's probably not necessary.

For selling items, you could hook UseContainerItem; something like:

hooksecurefunc("UseContainerItem", function(bag, slot)
    -- if the merchant frame is shown, and not to the buyback panel,
    -- then you are selling the indicated item
end)

and then proceed with watching bag events to see when the item successfully leaves your bags.

[SDPhantom]

Originally Posted by Phanx For selling items, you could hook UseContainerItem; something like: hooksecurefunc("UseContainerItem", function(bag, slot) -- if the merchant frame is shown, and not to the buyback panel, -- then you are selling the indicated item end)

You might want to hook PickupMerchantItem() as well since that sells any item that's being held by mouse cursor.