Is it possible to hide a certain crafting recipe for a character?

[. . .]

Hello! So I was wonder is it possible to hide a certain crafting recipe for a specific character because I don't want them to be able to craft a certain item.

Thanks for any help and reading, have a good day/night !

[Ultroman]

The builder_replica component (the client version of the builder component) has a RemoveRecipe function. See if you can make that work. If not, you can extend/chain the three functions CanBuild, CanLearn and KnowsRecipe in BOTH the builder and the builder_replica components, and simply return false, without calling the original functions, if the recname parameter is the recipe you want to disable. That's only 4 lines of code times 6. But I'd bet RemoveRecipe on the replica works.

Edited July 28, 2019 by Ultroman

[Serpens]

If above does not work (I guess it wont work if you are host of the world?):
All recipes can have a "builder_tag".
builder_tag means only characters with this tag can build it. So you could make an AddPlayerPostInit and give every player, except if they play your character, a new builder_tag and add this builder_tag to the recipe. This of course only works if the recipe does not have already a builder tag, like the ones exclusive to special  characters.

To change a builder tag for an existing recipe, you can use this code (everyhting into modmain):

for k,v in pairs(GLOBAL.AllRecipes) do -- loop over all existing recipes
    if v.name=="axe" then -- find the one we are looking for
        if v.builder_tag==nil then -- make sure it does not already have a builder tag. in this case this code wont be a good idea        
            v.builder_tag = "canbuildaxe" -- change the builder_tag without overwriting anything else
        else
            print("axe already has a builder_tag, overwriting it is no good idea")
        end
    end
end

edit: removed CanLearn code, because I'm not sure if this is the intended result

Edited July 28, 2019 by Serpens