m_iAmmoIndex in TF2WeaponsData_t Options

[J@nek]

Hi,

I'm trying to understand to what m_iAmmoIndex is refering to in the weapons data structure. Here is the structure:
typedef struct
{
int iSlot;
int iId;
const char *szWeaponName;
int m_iFlags;
float minPrimDist;
float maxPrimDist;
int m_iAmmoIndex;
int m_iPreference;
}TF2WeaponsData_t;

Of course, my first thought was that it was corresponding to AmmoIndex that we have in our mod meaning that if I have a specific ammo for each weapons, I should have a different index and normally 0 is not used.

What I don't understand is that for TF2 you did this table of indexes for weapons :
int m_TF2AmmoIndices[] =
{
0,0,0,0,0,0,0,1,1,0,0,0,1,0,0,0,0,2,2,2,2,1,1,2,1,2,2,0,2,1,1,3
};

where we can see very often the same values and very often 0. Does it mean that all weapons referencing a value > 0 are referencing the same type of ammo and that for all weapons with 0 it is automatic ?

I'm interested by all explainations about that.

Thank you in advance.