Is there an option or a command that allow some drops from a mod to not be pick up ? I think, for example, to maps, which only works when the player pick it up the ground (so if the chest collect them, they are useless)
"small-map", "map", "scorched-map" and "big-map". I think it's the internal name for the item of the mod MAPS. I don't know if it's the only mod with this problem.
i'm thinking what i'll have to do is scan the list of drops and if there's any maps in it, just not collect them at all. it's non-trivial to remove non-maps from the drop, as in, it'll probably end up consuming more CPU than ideal.
Version 1.1.9 provides a remote interface where other mods can prevent that their loot items will be collected by the loot chests. Maps 1.1.2 already makes use of this interface, so your maps will remain on the ground now.