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Cannot implicitly convert void to EventDelegate
I'm trying to build an inventory system based on NGUI's example, whereby each item has a Base class for item types, a GameItem class for stats and individual features of each in-game instance of the Base item, and a database that ties the three together. I'm trying to add an EventDelegate to all three, but I'm having a heck of a time getting it to work. Here's my current code:
public class InvBaseItem{
public List<EventDelegate> useItem = new List<EventDelegate>(); //Create a blank EventDelegate
}
[System.Serializable]
public class InvGameItem
{
public List<EventDelegate> UseItem {
get
{
if (baseItem == null) return null;
return baseItem.useItem;
}
}
}
public override void OnInspectorGUI (){
List<EventDelegate> itemSkill = EventDelegateEditor.Field(target, item.useItem);
}
So what I think I'm doing is a) create an eventdelegate in my base item class, b) create a getter for that delegate in my game item class, c) exposing the delegate in my database inspector. However, this produces an error, to wit "Cannot implicitly convert void to System.Collections.Generic.List". I'm assuming that means either my declaration in the base item class is wrong, or my getter is screwed up, and either way it's making it impossible for the database inspector to see the delegate. But I can't for the life of me see where my error was.
Answer by JustFun · Aug 18, 2014 at 07:21 AM
The issue is in 21 line. According to NGUI docs: EventDelegateEditor, EventDelegateEditor.Field with such set of parameters returns void, not List. So, this string must be:
public override void OnInspectorGUI (){
EventDelegateEditor.Field(target, item.useItem);
}
Perfect!! I've been smashing my head against this for a good three days, thank you so much for your help. :)
Sorry for the extra comment, but in poking around I'm finding that while this exposes the delegate, I can't actually change anything- drag & drop works with the fields that came built into the example, but anything new that I add appears to be read-only. Is there an obvious solution for this, or do I need to spend some time dissecting the tutorial code?