[ODE] Why is it that most commercial entities roll their own collision system?

[Ignacio Castaño]

Megan Fox wrote:
> There was the racing game awhile ago, Stalker apparently, and so on - all
> apparently using custom collision systems (or other collision systems found
> elsewhere, possibly, not sure).  Is there some problem with ODE's collision
> that makes it non-suitable for commercial games?

That may be, because most games already have some kind of structure or
hierarchy for rendering (ie culling). It makes more sense to use the 
existing code to perform collision detection queries, than to replicate 
that structure in ODE duplicating memory usage.

-- 
Ignacio Castaño
castanyo at yahoo.es