Collisions for player on certain spots

Hello i have made the dome in the picture and the way i want to set it up is to have the player not be able to enter it except through a doorway and the rest be blocked off by collisions if i block all he can’t pass through and if i allow everything it defeats the purpose of it… i am just unsure how to go about it…any help would be appreciated.

You could make a custom collision for the dome and import the model.

Or you could hack around it. Place another (overlapping) collision volume where the entrance/exist is and make it disable/enable dome’s collision.

This way the player can only enter when the initial overlapping collision has been triggered.