Is it possible to block a monster from using an area transition (i.e. a door)?
The basic concept I have in this module is that a 1st level PC finds a powerful monster, escapes from it, gains the necessary XP and equipment, then returns to defeat it.
So the PC learns about a haunted shack. When he enters it he discovers it is inhabited by a ghoul. The ghoul has a shuffling walk like a zombie. So it is easy enough for the PC to outrun it. And the PC has previously been advised that if he encounters anything in the shack that is too much for him to handle - to run out of the shack, into the sunlight, and he’ll be safe.
This is where the problem occurs. The PC should be able to freely move back and forth, in and out of the shack, using the area transition of the shack door. But the monster needs to stay inside the shack and never leave. Except the monster tends to follow the PC outside.
I’ve tried lowering the intelligence of the ghoul to a 3 (he is just a mindless undead after all). That seems to work some of the time. But other times it doesn’t. I need a fix that works all the time.
Any help would be appreciated.