Determines the base item type ID for the item specified.
- Item to be analyzed.
Get the base item type (BASE_ITEM_*) of oItem.
The BASE_ITEM_* constants are from the baseitems.2da file, and are merely the line number.
Note that a few are invalid - see the 2da, but noting that BASE_ITEM_SCROLL doesn't exist, instead, it is BASE_ITEM_SPELLSCROLL.
author: Jody Fletcher, editor: Jasperre