Limited number of additional parts from a pool?

[Kiaazad]

I have 3 main parts present in all images (4 including a background) and ~20 optional parts, is it possible to give each image a random number of optional parts limited to 5?

[nftchef]

Yes,
In any/all of the folders, you can add a NONE.png empty/transparent PNG image with a # weight. if chosen, that folders trait will be skipped and not included in the metadata

example,

[Kiaazad]

I assumed: that would give me possibility of one image getting up to 20 optional parts.
Is there any way to make sure it's limited to 5?

[nftchef]

Any folder with any given number of files with a # weght will only choose 1 of those files.
To do multiple optional traits, you would need to have multiple folders for each trait, using # weights and NONE within each folder.

In the following example, every OptionalTrait folder will "roll" for a single file with that folder, with the percent chance of each file being,

weight/sum of weights in folder

in the examples below, each trait has,
50% chance of being NONE, or not being selected,
25% Option C
12.5% Option A
12.5% Option B

[eskacie]

In this example, is it possible to bundle the multiple optionaltraits under a single trait_type category in the metadata? Having the root folder as Accessory (or trait: "Accessory") so that you get 3 different values in the json under Accessory as opposed to them overwriting each other if all three traits are chosen?