a potential future dummy idiocy reducer passage for this event:
Quoting Gamestudio Manual version 7.80 Juli 31, 2009 (near bottom of "updating" entry):

Quote:
AABB is only supported in A6-style BSP levels that don't contain concave blocks and are compiled without the Create Meshes and Merge Across Leafs options.


for AABB and A7 map compiler options it is (?):
* "Build BSP Map"
* No "Create Meshes"
* No "Merge Across Leafs"
* set hull sizes

Quoting Gamestudio manual version 7.80 Juli 31, 2009:
Quote:
All map entities should be compiled with the same hull sizes as the level.


Quote:
4 predefined vectors contain the current level's hull box sizes for evaluation in functions: hull_narrowmin[3], hull_narrowmax[3], hull_fatmin[3], and hull_fatmax[3]. They contain the x, y, z minimum and maximum values of the narrow and fat hulls.

Some values seemingly related to those 4 predefined vectors were accessed in Lite-C in a way similar to this:
Code:
hull_narrowmax.x
hull_narrowmax.y
hull_narrowmax.z

hull_narrowmin.x
hull_narrowmin.y
hull_narrowmin.z

hull_fatmax.x
hull_fatmax.y
hull_fatmax.z

hull_fatmin.x
hull_fatmin.y
hull_fatmin.z


Quoting jcl.
Quote:
No, the FAT / NARROW hulls and the OBB / AABB collision systems work exactly the same way in A6 and A7.

OK. Thank you, jcl.