Cannot get an index for an array from a resource

Help Programming
,
1

Godot Version

4.3

Question

I am not incredibly experienced with Godot or programming in general, however I am not brand new and have been using Godot for about the past year on and off.

I am having an issue where I have created a resource that contains an array of items, but when I try and get an index for them, I get the error “Only ‘String’ or ‘StringName’ can be used as index for type ‘Inventory’, but received ‘int’”. This isn’t really a bug issue, more just about me not really getting how arrays work with resources.

I saw that there was a post here with a similar error, but I couldn’t really make heads or tails of what fixed the issue and how I could apply it to my code, so I’m hoping someone can give me a little bit more of a digestible answer about how stupid I’m being.

This is the script that is causing the errors, specifically the lines that have Playerstats.items[number]:

func item_stuff():
	if sub_menu == "item":
		if item_page == 1:
			item_1.text = Playerstats.items[0]
			if Playerstats.items.size() > 1:
				item_2.text = Playerstats.items[1]
			if Playerstats.items.size() > 2:
				item_3.text = Playerstats.items[2]
			if Playerstats.items.size() > 3:
				item_4.text = Playerstats.items[3]
		if item_page == 2:
			if Playerstats.items.size() > 4:
				item_1.text = Playerstats.items[4]
			if Playerstats.items.size() > 5:
				item_2.text = Playerstats.items[5]
			if Playerstats.items.size() > 6:
				item_3.text = Playerstats.items[6]
			if Playerstats.items.size() > 7:
				item_4.text = Playerstats.items[7]

This is the script for the Inventory resource:

extends Resource
class_name Inventory

@export var Items: Array[Item]

This is the global that has the items variable

extends Node

var max_hp: int = 20
var current_hp: int = 20
var level: int = 1
var experience: int = 0
var items: Inventory

This is what is in one of the resources I am trying to get

Screenshot 2025-11-02 004829
Screenshot 2025-11-02 004829372×164 14.5 KB

Thanks for reading and hopefully not facepalming while looking over my code.

2

items is not an array. The array is Items and it is inside the resource assigned to items, so it should be Playerstats.items.Items[ number ].

3

That worked!

I had to change it a little bit to this for it to work, but this is the solution, thank you!

func item_stuff():
	if sub_menu == "item":
		if item_page == 1:
			item_1.text = Playerstats.items.Items[0].Name
			if Playerstats.items.size() > 1:
				item_2.text = Playerstats.items.Items[1].Name
			if Playerstats.items.size() > 2:
				item_3.text = Playerstats.items.Items[2].Name
			if Playerstats.items.size() > 3:
				item_4.text = Playerstats.items.Items[3].Name
		if item_page == 2:
			if Playerstats.items.size() > 4:
				item_1.text = Playerstats.items.Items[4].Name
			if Playerstats.items.size() > 5:
				item_2.text = Playerstats.items.Items[5].Name
			if Playerstats.items.size() > 6:
				item_3.text = Playerstats.items.Items[6].Name
			if Playerstats.items.size() > 7:
				item_4.text = Playerstats.items.Items[7].Name
4

Sorry turns out that’s not actually the solution, oops

Your fix just got rid of the error in the editor, but when the game runs and the game tries to get anything from the Items array the game crashes and gives this error:

“Invalid access to property or key ‘Items’ on a base object of type ‘Nil’.”

my fault for not running the game and just assuming it worked because the error in the editor went away

5

That would mean items in your global script does not have an Inventory resource assigned when you try to access it.

Where and when do you assign the Inventory resource? When is the earliest occasion you try to access it?

6

I don’t have anywhere in the scene that assigns anything to the inventory resource, and the earliest occasion I try and access it is pretty much at the lines where the error was before

This is a screenshot of node that assigns things to the Inventory resource I think, it wasn’t in the scene where I am trying to access it through the player stats global script but after adding it nothing changes:

Screenshot 2025-11-02 014042
Screenshot 2025-11-02 014042365×168 12.9 KB

I don’t think I completely understand the question

7

This is just an empty variable (with a type hint), but it doesn’t get any resource object here. You need to assign a resource object to the variable somewhere: Either export the variable and do it in the editor (like it seems to be the case for your player) or somewhere in the code.

8

if I were to export the variable how would I access it since the global script isn’t attached to a node?

9

Autoloads can either be scenes or scripts. If it’s a scene you can export the variable and set it there, if it’s just a script you would have to do it via code I guess.

10

I just made the script a scene with an export variable instead, and it works as intended