UPDATE Aug 30, 2022
With help from a fellow C3 user in the Discord chats, it has been unofficially determined that this is a bug with the 8Direction behavior. I will be filing a bug report soon...
INTRO
I'm working on a top-down shoot-'em-up title. The arena is broken up into 9 different areas. The walls that define the areas have doors that only the enemy called "Manager Mike" can go through.
THE INTENDED DESIGN
There is a "Door Trigger" object that has the Solid behavior that is enabled or disabled depending on whether or not "Mike" is overlapping the object or not. "Mike" is using the custom obstacle element of the Pathfinding behavior, so the Solid behavior does not factor in. The "Trigger" object is set in the space where the Player can move from area to area.
If "Mike" is overlapping the "Trigger" while going through the door space between the area walls, then the Solid behavior of the "Trigger" is disabled. While disabled, the Player can also slip through the door space. (Previously, I tried using Collision Filter and Solid behavior tags but that proved fruitless.) So long as "Manager Mike" is not overlapping the "Door Trigger" object, then that object instance's Solid behavior is enabled and the Player cannot move from area to area.
THE PROJECT
Project Link: https://drive.google.com/file/d/1_yERwqONQJrVzpiV-byvCKChDOXqD782/view?usp=sharing
Event Lines: 30 - 43
THE PROBLEM
As you can imagine, this isn't working. "Manager Mike" moves through the door spaces just fine. Because of the custom obstacle element, it ignores the "Trigger" object's Solid behavior as it should. The problem is that the Solid behavior, even while enabled (I've checked via the debug mode), acts as if it doesn't work when the Player moves up to it. The Player moves past the "Trigger" object as if it were disabled even though it is clearly enabled and "Mike" is not overlapping the "Trigger".
ADDENDUM
Elsewhere in the project (event lines 58 & 59), the Player does make use of the Collision Filter via Solid tags for the Walls object. And the curious thing is that the Wall object instances all work properly - the Solid behavior keeps the Player from moving through them. However, the "Door Post" object also has Solid behavior attached to it (and a tag which is not referenced) but the Player can move through it. So, I am at a loss of how to resolve this issue and what it is I am missing.