The stash

[mburbea]

I found the stash, what's great about the stash as unlike inventory items which are stored in a completely absurd fashion, stash items are relatively compact and sensible!

Offset	Length	Name	Example	Desc
0	4	Data Length	86 00 00 00
4	5	Unknown header	F5 43 EB 00 02
7	4	Data length past the header	7D 00 00 00	Yes this is basically the first value - 9. Why?
11	4	Item count	04 00 00 00

What follows is list of item in stash format. There were as I suspected 139,4 in this file.
Note that stash format does not include an item id, but rather just the type id of the item.
Here is a sword I injected into my save Kellerac's sword. Note that I didn't specify any of the core effects that this weapon should have, yet both are actually present. (1CCBD6,1CCC11). If you manipulate the stash, it's pretty safe to do so during standard gameplay and will not cause you to have to reload the save game.

  | 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15
----------------------------------------------------
00| EB 06 17 00 0A 03 00 00 00 00 00 00 80 3F 01 00
16| 00 00 00 00 00 00 00 00 FF

Offset	Length	Name	Example	Desc
0	4	Type Id	EB 06 17 00
4	2	Unknown constant	0A 03	It's always this value it seems.
10	4	Current Durability as a float	00 00 80 3F	1 is probably a safe number.
14	1	Unknown byte	01	Looks to be always 1?
24	1	End struct marker	FF	Always FF.

When I pulled out Kellerac's sword it had both core effects on it:
The item changed to the following::

  | 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15
----------------------------------------------------
00| EB 06 17 00 0A 03 00 00 00 00 00 00 80 3F 01 00 
16| 00 00 00 00 00 00 00 00 14 02 01 02 00 00 00 73 
32| 8E 57 00 D6 CB 1C 00 FF FF FF FF FF FF FF FF AA 
48 |6E 58 00 11 CC 1C 00 FF FF FF FF FF FF FF FF 00 
64| 00 00 00 02 00 00 00 D6 CB 1C 00 FF FF FF FF 11 
80| CC 1C 00 FF FF FF FF 00 00 00 00 00 00 00 00 FF

Which looks suspiciously like the CoreEffects struct after the 14 02 01, starting on 27 is the number of effects counts, and 31 starts the prefixes in the struct.

As a first go, I'll probably just support adding items not necessarily listing. I don't know what happens if you go over 155. The save game does NOT store the stash limit.

[mburbea]

While the stash is on the field it's just a different container and becomes much harder to find. This might be it's signature 41 F5 7E 00 04. It also will store the actual item id and not the type id.
I'm guessing the stash is just a special container that when you leave an area with a stash it will persist it and sync it between environments.

[mburbea]

This is the save code :
add_to_stream(stream, m_pocket);
add_to_stream(stream, m_durability);
add_to_stream(stream, m_stack_count);
// Write out all the buffs
add_to_stream(stream, m_owner_buffs.len());
for (int scan = 0; scan < m_owner_buffs.len(); ++scan) {
m_owner_buffs[scan].stream_data_out(stream);
}
Then it used to save two bools (as 0/1 bytes), owned_for_stealing and has_custom_name, then the custom name string.