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Scripting Events

Scripting events have 3 properties:

The Moment and Condition in Which They Are Called (Event Name)
The Event System Used (Event Type)
This determine how to register the event and access the parameters.
The Script to Execute
This is your script or someone else script that you registered to a specific event to perform a specific behaviour on specific objects.

Event Systems

Blueprints Events
Those are the base game events, blueprints have a specific field for them and their parameter can be accessed with specific NWscript functions. They have not been changed so you will have to google for more documentation, here's a place to start: https://nwn.fandom.com/wiki/Event
Script Based Events
PAGE INFO ALREADY TRANSFERRED TO THE NEW WIKI - Variable Based Events

Variable Name	Description	Caller	Parameters	Return Value / BypassEvent() Result	Example
EVENT_CANUSE	Called before determining if an item can be used or not.	The Item	0: The item possessor	Boolean: Wether or not the item can be used (SetEventResultInt(TRUE or FALSE))	scroll_w_canuse
EVENT_RECVITEM	An item is about to be added to an object inventory	The object that will acquire the item	0: The Item 1: The current item possessor	Boolean: Wether or not the item should be added to the caller's inventory	mail_putinbox
EVENT_CLEARALLACTIONS	Called when an object actions list is about to be cleared. It is one way to know when an action has been interrupted (for any reason)	The object	None	None