[LVL ED] New Question: How to create a door

[Nervly]

make a script area for that specific place, name it something(in this example cavein_area)
add to the script:
under void OnStart():
AddEntityCollideCallback("Player", "cavein_area", "cavein_function", true, 1);
Now, somewhere not inside a function:
void cavein_function(string &in asParent, string &in asChild, int alState)
{
//Your stuff to happen, like setentityactive and all that
}
you can look at the engine scripts page to see which is for what, not too hard.
Edit: If that doesn't work, switch "Player" with "cavein_area"

Do I make a new void OnStart() or do I write the script under the shelf one?