Help with damage formula

[Lejjo]

int32_t WeaponDistance::getWeaponDamage(const Player* player, const Creature* target, const Item* item, bool maxDamage /*= false*/) const
{
	int32_t attackSkill = player->getSkill(SKILL_DIST, SKILL_LEVEL);
	int32_t attackStrength = player->getAttackStrength();
	int32_t maxValue = Weapons::getMaxWeaponDamage(attackSkill, ammuAttackValue);
	if(random_range(1, 100) <= g_config.getNumber(ConfigManager::CRITICAL_HIT_CHANCE))
		maxValue <<= 1;
	Vocation* vocation = player->getVocation();
	if(vocation && vocation->distDamageMultipler != 1.0)
		maxValue = int32_t(maxValue * vocation->distDamageMultipler);
	if(maxDamage)
		return -maxValue;

	int32_t minValue = 0;
	if(target)
	{
		if(target->getPlayer())
			minValue = (int32_t)std::ceil(player->getLevel() * 0.1);
		else
			minValue = (int32_t)std::ceil(player->getLevel() * 0.2);
	}
	return -(random_range(minValue, maxValue, DISTRO_NORMAL) * attackStrength) / 100;
}

Can someone explain me every term? This is what I know so far:

attackStrenght = your attack stance (full atk/bal/full def)
minValue = lvl * 0.1 (if target is player) lvl * 0.2 (if target isn't player)
ammuAttackValue = atk on your ammo
attackSkill = dist level

The things I do not know is:
how the maxValue is calculated
DISTRO_NORMAL


And also, how the dmg formula is for distance weapons.

Thanks for your help everyone!

 

[Clary]

~wrong section.

 

[Lejjo]

Nvm, got it now.