Accessing data in nested resources

[vati]

Godot Version

Godot 4.2

Question

Hello again! I’m stuck once more in how to access and change data in resources.

The problem is that I’m trying to make a simple crafting system, where all it does it add and subtract an amount in the inventory list of items. So it’s just changing numbers of variables basically.

I have two resource classes that I’m working with. “Item” and “Recipe”. These I’ve tried manipulating by making two scripts: “get_item” and “craft_item”.

Get_item works well! It has an export variable for what Item I need to add, and fetches information fine from it, just changing the “amount” of the resource. No problems there:

Craft_item gives me trouble though, because a Recipe resource contains Item resources within one of its variables, for information on what items to subtract, and what will be the result:

I’ve tried making this slapdash code to make it reference the data in the nested “result” resource, but am failing. Godot keeps giving me a ‘nil’ error for the contents of those variables.

How do access this information nested in the recipe resource? is there something I should be loading in, that I’m missing?

(Don’t mind the commented out line for now, I think I’ve turned that into nonsense)

[herrspaten]

there might be problems with when-what is defined. Try to print(recipe.result.name) in the _on_pressed()-method. If my suspicions are correct, the recipe is null when result,ingredient1 and ingredient2 are set. To avoid this you can use

@onready var result: Item = recipe.result

Another way to ensure the recipe is loaded correctly, is to use preload(“your_recipe_path”), but then you cant export it since it has to be constant

[vati]

Gosh, that’s all it took! Thank you so much that’s perfect, it works now!