"use_box" in c_trace will simply trace in a "thicker" ray(multiple rays) but still hit the terrains polygons and not it's bounding box...as long as my.polygon is set for the terrain.

In the MystyMood object placement I have the following setting (wich works quite well):
Code:

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my.z -= c_trace (my.pos, temp, ignore_me + ignore_you + ignore_sprites + ignore_passable);  

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