Cool VL Viewer forum

Hello! I am trying to define a function that takes as argument the full path of an inventory item, calls the PickAvatar with the "true" parameter, then sends the item to the results of the OnPickAvatar() callback… but I fail.



If I try to run it with ShareInventory("test"), where test is an empty notecard in the root of the inventory, the Lua console opens the avatar picker, but then tells me [string "function ShareInventory (inventory)..."]:4: attempt to call a nil value (for iterator 'for iterator'). Could you help?

I know, I could put the sending part inside the callback, but I want to keep it clean for other uses. (I want to make a function that invites a mass of people to a goup, for example.) All I want from the callback is to give me its result, so I can use it otherwise.

Err... The OnPickAvatar() Lua callback for PickAvatar() gets only called after the avatar picker floater is closed...
PickAvatar() simply opens the floater and immediately returns. You get the result (the avatar the user picked) in OnPickAvatar(), whenever the pick avatar floater is closed.

Ah, I see. It has to be there. Thanks, I'll try it!

The whole idea behind a callback function, is that it is there to implement asynchronous operations (among which event observers, which is not the point here, but definitely is for callbacks such as OnReceivedChat(), for example): some functions (such as PickAvatar()) just cannot return a result immediately (synchronously), since they depend on external events (a user input, a server reply to a request sent by the function, etc). PickAvatar()) cannot wait for the user input (which would freeze the whole viewer), so it returns immediately and you get the result whenever it arrives, in the OnPickAvatar() callback.