The player inventory is split into pockets, base slots and backpack slots. A worn backpack opens the last group and raises the weight limit; carrying too much slows the player down.
Slot groups
| Slots | Group | Opened by |
|---|---|---|
| 1 – 5 | Pockets (hotbar keys 1 – 5) | Always open |
| 6 – 25 | Base slots | Always open |
| 26 – 35 | Backpack slots | A worn backpack |
Three values decide the layout:
| Value | Where | Default | Meaning |
|---|---|---|---|
inventory:slots | server.cfg convar | 35 | Total slots, the hard maximum |
pockets | data/obsi/core.lua | 5 | Number of pocket slots |
baseSlots | data/obsi/core.lua | 25 | Last slot that is always open |
Everything after baseSlots stays locked until a backpack opens it.
The interface shows those slots under NEED A BACKPACK, and the server rejects any move or add into a locked slot.
Backpacks
A backpack is an item worn in the Bag slot of the clothes column.
Its backpack field says how many slots it opens and how much weight it adds:
['backpack_large'] = {
label = 'Large backpack',
weight = 1500,
prop = 'prop_michael_backpack',
backpack = { slots = 10, weight = 20000 },
clothing = {
kind = 'component', id = 5,
male = { drawable = 82, texture = 0 },
female = { drawable = 82, texture = 0 },
},
},| Item | Slots | Extra weight |
|---|---|---|
backpack_small | 5 | 10 kg |
backpack_large | 10 | 20 kg |
The maximum weight is the player weight plus the worn backpack's backpack.weight.
Weight effects
When a player carries more than a share of their maximum weight, the inventory starts to push back.
| Effect | Setting | Default |
|---|---|---|
| Penalties start at | overloadPct | 85 % of the maximum |
| Walk style | clipset | move_m@hobo@a (false keeps the current one) |
| Movement speed | moveRate | × 0.85 |
| No sprinting or jumping from | disableSprintPct | 97 % |
| Stamina lost per second of running | staminaDrain | 2.5 |
| Sweating | sweat, sweatAmount | on, 80 |
All of these live in the weight table of data/obsi/core.lua.
Admins can switch the whole feature off live with the Weight effects addon.