koobas.hobune.stream
Can't add GameObjects to ArrayList
I am sending information from my item to my inventory. Telling the inventory to add the item. Gives me a null reference exception.
Item.js :
inventory.AddItem(this as GameObject);
Inventory.js :
var items : ArrayList;
function AddItem (item : GameObject) {
items.Add(item.gameObject); //Error happens here
}
Why are you using an ArrayList if you're only putting one type in it?
the player may want more than 1 item in his/her inventory.
The error is occurring at the line in Inventory.js:
items.Add(item.gameObject);
Still got no idea why.
I'm not asking why you want a collection; I'm asking why you're using an ArrayList. You should only use that if you need to support multiple types.
this is not a GameObject; its class is derived from MonoBehaviour. You use the correct semantics later on:
.gameObject
Using the shorthand for this.gameObject works fine:
inventory.AddItem(gameObject);
However, you should use something other than an ArrayList; a List is probably what you want. Using .gameObject on item is useless; I don't even know why that compiles.
import System.Collections.Generic;
var items : List.<GameObject>;
function AddItem(item:GameObject) {
items.Add(item);
}
i did not read:
import System.Collections.Generic;
you are absolutely correct. Thank you so much for the many and helpful replies!
Sorry, I tried to edit that line to be in the code, as I screwed up the initial answer, but QATO won't take the edit. If you get to the reputation level where you can edit the post, you can see that I actually committed the edit, but it won't display. I am not fond of QATO.
yeah no problem(its a problem I get all the time), thanks all the same.
