Getting parameters of one interface in another interfaces object

Questions & Answers
1

Ok, I’m sorry if you have trouble understanding me, my technical english isn’t very good. However…

I have 2 interfaces.

public interface IItem
{
    GameObject itemGO { get; set; }
}

public interface IHasItemPlace  {

    GameObject itemPlace { get; set; }
    IItem item { get; set; }
    bool hasItemPlaced { get; set; }

}

As you can see, IHasItemPlace has a parameter of IItem.
There is a class Player, that implements IHasItemPlace, and there is also a class Salver, that implements both. The thing is, when i equate item in Player to a Salver object, i can’t access it’s IHasItemPlace parameters. I need to get an item, that is in salver, while the salver itself is in player. I thought to do something like

(IHasItemPlace)player.item.item

or

 player.(IHasItemPlace).item.item

But it doesn’t seem to work (of course).
Is there any way to make this happen?

2

You have to test whether the current item is actually an IHasItemPlace because not all items are.

IHasItemPlace itemHolder = player.item as IHasItemPlace;
if (itemHolder != null) {
    itemHolder.item...
}