Mod Recipe Questions: Config to disable recipe, and also can I limit item count of recipe.

[PocketPossum]

Hi! I have a question. I added an item to my mod that's fun but potentially really abusable, and I was wondering about two things for it.

How do I go about adding some kind of mod config option to check if the recipe is allowed to be crafted or not? I was thinking of like, maybe it adds a character tag that says "can_craft_this" and the recipe checks if the character has that tag or not same as it already checks for the character tag, but I'm not sure how to actually get a config setting for it that players can change in the mod menu.

I was also wondering, if its possible to make it so a player cannot have more than 1 copy of said item in their inventory? Just disabling the recipe if they have one, or deleting extras or preventing them from picking up a second copy if they stored one.

Thank you.

[FerniFrenito]

2 hours ago, PocketPossum said:

Hi! I have a question. I added an item to my mod that's fun but potentially really abusable, and I was wondering about two things for it.

How do I go about adding some kind of mod config option to check if the recipe is allowed to be crafted or not? I was thinking of like, maybe it adds a character tag that says "can_craft_this" and the recipe checks if the character has that tag or not same as it already checks for the character tag, but I'm not sure how to actually get a config setting for it that players can change in the mod menu.

I was also wondering, if its possible to make it so a player cannot have more than 1 copy of said item in their inventory? Just disabling the recipe if they have one, or deleting extras or preventing them from picking up a second copy if they stored one.

Thank you.

Yes, you can with this:

local recipe_return = GLOBAL.Recipe( -- Your prefab recipe, it doesn't matter if you use Recipe2
    "your_prefab",
    { 
        Ingredient("boards", math.pow(2, 63)), 
    ...
)
--[[
  canbuild(
    recipe: the recipe lol
    owner: the player who craft the object
    pointOnMap: I think is the position where you craft the object, i really don't know
    rotation: no idea
    current_prototyper: no idea
  )
--]]
recipe_return.canbuild = function(recipe, owner, pointOnMap, rotation, current_prototyper) -- Add a "canbuild" function
    return not owner:HasTag("your_tag") -- If owner has tag, return false and not build the thing
end

With this the logic part is complete, but in game it looks strange because you can click the crafting button, the player does a crafting animation but won't craft, instead he will say a dialogue.

If you need more help with the code I can help you.

Edited September 7, 2025 by FerniFrenito

[PocketPossum]

Hi thank you! I do need some help with this.

My crafting recipe for it is in modmain.lua, and looks like this.

AddCharacterRecipe("destiny_bond", -- name
	{ -- ingredients
		GLOBAL.Ingredient("nightmarefuel", 2),
	},
	GLOBAL.TECH.MAGIC_TWO, -- tech
	{ -- config
		product = "destiny_bond",
		builder_tag = "wobbuffetonly",
		numtogive = 1,
	    atlas = "images/inventoryimages/destiny_bond.xml", 
		image = "destiny_bond.tex",
	}, 
	{ -- filters
		"WEAPONS", "MAGIC",
	}
)

Do I need to replace it with what you coded? Or do I just add bits to it, or does it go somewhere else.

[FerniFrenito]

7 minutes ago, PocketPossum said:

Do I need to replace it with what you coded? Or do I just add bits to it, or does it go somewhere else.

Instead

local recipe_return = GLOBAL.Recipe

Use

local recipe_return = AddCharacterRecipe(...

 

[PocketPossum]

Thank you! I got that to work so now if the player has the tag "cant_craft_bond" it prevents them from crafting the item.

I was wondering, do you also know how to make the config add or remove that tag from the character?

In the config I have some code saying 

configuration_options =
{
 {
		name="can_craft_destiny_bond"
		,label="Can craft Destiny Bond?"
		,options = {
			{data=1,description="cant_craft_bond"}
			,{data=1.1,description="can_craft_bond"}

			
		}
		,default=1
	},
} 

And in the character's lua file, I have a line of code that says

	inst:AddTag("wobbuffetonly") 

Is there a way to have a second     inst:AddTag that specifically takes from the config? Or only adds the tag if the config says so.

Thank you again btw.

[FerniFrenito]

25 minutes ago, PocketPossum said:

I was wondering, do you also know how to make the config add or remove that tag from the character?

Yes, when you add a mod config, you can get the value of "data" selected by the user, the ID of the config is the name. So:

local config_can_craft_destiny_bond = GetModConfigData("can_craft_destiny_bond")

and, if the user selected cant_craft_bond, the value of config_can_craft_destiny_bond will be 1, if can_craft_bond, then 1.1.

The description tag and the hover tag are for the user, you can write there normally because it is information that the user will read.

But I think if the world owner turns on that setting, all users in the world will have the same setting, idk.

Sometimes it takes me a long time to reply because this doesn't have a notification system. If you need me to reply faster, just let me know.

[PocketPossum]

22 minutes ago, FerniFrenito said:

Yes, when you add a mod config, you can get the value of "data" selected by the user, the ID of the config is the name. So:

local config_can_craft_destiny_bond = GetModConfigData("can_craft_destiny_bond")

and, if the user selected cant_craft_bond, the value of config_can_craft_destiny_bond will be 1, if can_craft_bond, then 1.1.

The description tag and the hover tag are for the user, you can write there normally because it is information that the user will read.

But I think if the world owner turns on that setting, all users in the world will have the same setting, idk.

Sometimes it takes me a long time to reply because this doesn't have a notification system. If you need me to reply faster, just let me know.

Its okay if you take a bit, its no worries.

So I add the local config_can_craft_destiny_bond = GetModConfigData("can_craft_destiny_bond")

to the character's lua?

What do I do then? Would I try to add something like

	if config_can_craft_destiny_bond.data = 1
		inst:AddTag("cant_craft_bond") 
	end
	if config_can_craft_destiny_bond.data(1.1) then
		inst:RemoveTag("cant_craft_bond") 
	end

To the onload(inst) function? Or something else.

Its my first time working with a mod config option so not 100% how to use the information from it.

Edited September 8, 2025 by PocketPossum

[FerniFrenito]

14 minutes ago, PocketPossum said:

Its okay if you take a bit, its no worries.

So I add the local config_can_craft_destiny_bond = GetModConfigData("can_craft_destiny_bond")

to the character's lua?

What do I do then? Would I try to add something like

	if config_can_craft_destiny_bond.data = 1
		inst:AddTag("cant_craft_bond") 
	end
	if config_can_craft_destiny_bond.data(1.1) then
		inst:RemoveTag("cant_craft_bond") 
	end

To the onload(inst) function? Or something else.

Its my first time working with a mod config option so not 100% how to use the information from it.

If the load corresponds to the load of the element you want to add the label to, yes, but the second "if" is unnecessary, since the game doesn't save mod changes unless you create code for it, so you only need the first "if." If you only need a single value, I recommend using a boolean (true or false) instead of 1 and 1.1.

Edited September 8, 2025 by FerniFrenito

[PocketPossum]

Hi! So I tried using this bit of code here.

-- When loading or spawning the character
local function onload(inst)
    inst:ListenForEvent("ms_respawnedfromghost", onbecamehuman)
    inst:ListenForEvent("ms_becameghost", onbecameghost)

    if inst:HasTag("playerghost") then
        onbecameghost(inst)
    else
        onbecamehuman(inst)
    end
-- Check config.
	local config_can_craft_destiny_bond = GetModConfigData("can_craft_destiny_bond")
	if config_can_craft_destiny_bond.data(1) then
		inst:AddTag("cant_craft_bond") 
	end
end

I wound up getting this error.

 

I tried adding         ModIndex:GetModActualName(Wobbuffet)

but wasn't sure where to add it? And it tells me variable ModIndex is not declared where I put it.

Edited September 8, 2025 by PocketPossum

[PocketPossum]

I figured it out!

In modmain.lua i added a line of code saying 

GLOBAL.destiny_config_checker = GetModConfigData("can_craft_destiny_bond")

Then in teh character's lua file, wobbuffet.lua, I edited the load function like so.

-- When loading or spawning the character
local function onload(inst)
    inst:ListenForEvent("ms_respawnedfromghost", onbecamehuman)
    inst:ListenForEvent("ms_becameghost", onbecameghost)

    if inst:HasTag("playerghost") then
        onbecameghost(inst)
    else
        onbecamehuman(inst)
    end
-- Check if you can craft Destiny Bond.

	if destiny_config_checker == 1 then
		inst:AddTag("cant_craft_bond") 
	end
end

So now, if the config option says you can't craft it won't let you craft it, and if it does say you can then you can.

[FerniFrenito]

9 minutes ago, PocketPossum said:

So now, if the config option says you can't craft it won't let you craft it, and if it does say you can then you can.

I'm so glad it worked. If you need anything, let me know with a DM or something, although I don't know how that works on this page.