[SCRIPT] Moveable book unlocks a door?

[Adny]

Create a small script_area where you know it will only make contact with the book when it is pulled all the way out (this is the most difficult part; make sure to thoroughly test it in dev mode and use debug messages for this). From there, simply set up an entity collide callback, using the book as the parent, and the script area as the child.

Hope that helped!