Auxiliary attacks

[kuniqs]

What is the exact formula for triggering an auxiliary attack in 0.20? I'm interested in particular in the bite attack, both for VS and Vp (assuming it works different for VS than for other races with bite).

[Sprucery]

This returns your to_hit value:

  Code:

int melee_attack::calc_your_to_hit_unarmed(int uattack)
{
    int your_to_hit;

    your_to_hit = 1300
                + you.dex() * 75
                + you.skill(SK_FIGHTING, 30);
    your_to_hit /= 100;

    your_to_hit -= 5 * you.inaccuracy();

    if (you.get_mutation_level(MUT_EYEBALLS))
        your_to_hit += 2 * you.get_mutation_level(MUT_EYEBALLS) + 1;

    if (you.species != SP_VAMPIRE && you.hunger_state <= HS_STARVING)
        your_to_hit -= 3;

    your_to_hit += slaying_bonus();

    return your_to_hit;
}

So for your_to_hit, there's a base value of 13 and each point of dex gives +0.75 and fighting skill gives +fighting*0.3. This is modifed by inaccuracy, eyeball mutation and being a starving non-vampire. Slaying bonus is added.

This value is given to random2 function and if the result if greater than or equal to monster evasion value, or you pass a one_chance_in_30 test, you score a hit.

Being under Elyvilon penance can block your attack.

I hope someone will correct all mistakes I may have done in interpreting this :) At least I hope I looked at the right piece of code...