How to make a custom backpack

[Insertz]

Does anybody how to make a custom backpack with 3 slot?

 

Edited August 15, 2023 by Insertz

[Glommer2]

--you can check wilson's beard slot in scripts-containers

params.beard_sack_3 =
{
    widget =
    {
        slotpos =
        {
            Vector3(-(64 + 12), 0, 0),
            Vector3(0, 0, 0),
            Vector3(64 + 12, 0, 0),
        },
        slotbg =
        {
            { image = "inv_slot_morsel.tex" },
            { image = "inv_slot_morsel.tex" },
            { image = "inv_slot_morsel.tex" },
        },
        animbank = "ui_beard_3x1",
        animbuild = "ui_beard_3x1",
        pos = Vector3(-82, 89, 0),
        bottom_align_tip = -100,
    },
    type = "side_inv_behind",
    acceptsstacks = true,
    lowpriorityselection = true,
   -- excludefromcrafting = false,
}

--this decides what kind of item can be put into the container, delete it if you don't need

function params.beard_sack_3.itemtestfn(container, item, slot)
    --Edible
    for k, v in pairs(FOODGROUP.OMNI.types) do
        if item:HasTag("edible_"..v) then
            return true
        end
    end
end

[Insertz]

It's not working