Thank you both.
LE:
Sorry to bother you further but I've read the manual section 10 times and I can't grasp something:
- c.v is a pointer to a D3DVERTEX struct, corresponding to that specific CONTACT*;
- it means that I could also use c.v.y and get the same result as if using c.z (IIRC in Dx coords y is upwards)
Am I right?

Last edited by mireazma; 06/29/11 12:38.
ERROR in communism.cpp, line 0:
#include<god.h>
was fatally missed.