Hi, i'm trying to catch when a player fast-travels with a script. I can't find nothing like the RegisterForSleep()/OnSleepStart(). It doesn't exists, or i've missed it?

well OnCellLoad would trigger whenever a cell loads, but they're loading and unloading all the time, even when running around.

Does the player get an OnInit event after the loading screen? That might be a good event to use...you could store the previous cell's Indoor/outdoor status, and if the player is doing a loading screen from one outdoor cell to another, he is either fast travelling, using a horse cart, or going through a city gate. What you probably want is to save the game time periodically and check for big jumps where the time jumps forward much further than an ordinary loading screen time jump.

http://www.creationkit.com/Events

There is most certainly events for sleeping, though I doubt they would trigger for fast travel. You could try http://www.creationkit.com/OnLocationChange_-_Actor. I haven't played around with it and can't say when it does or doesn't fire.

Maybe you could keep track of the game hour in an OnUpdate() event. If the game hour has a sudden change between updates, then the cause was probably one of three things:

1. Sleep
2. Wait
3. Fast travel

You could use GetParentCell() in the OnUpdate() in order to see whether or not the player really moved somewhere. May be a good idea to check the time difference against the timescale global variable too.

I think tracking the time will be the best solution. I'll try that way.
Thank you for your help