I remember facing same kind of a problem in the past.. It will affect all models which are close to the celling. There was something to 'force' model for 'receiving' light from the surface below. But I can't find it in the manual. If I remember correctly, Superku helped me out back then, so maybe he will be able to point out how to make entity 'take' shadows from the surface below.
, floor_range perhaps? "Controls the range within which the entities' light depends on the brightness and shadows of the floor area below (default 1000 quants). If the entities' height above the floor exceeds that range, the entity won't receive light, albedo and fog values from the floor texture. This way it can be prevented that aircraft models in a flight simulator suddenly change their brightness dependent on shadows on the ground."
@rayp, congrats, another fun adventure of Gamestudio 3d solved
