Defense Formula

[Yngwie]

Hi, was wondering if anyone could point me in direction,

Where (In the source) is the calculations for armor and defense (shield)

For both players and monsters.

 

[Yngwie]

bump

 

[JDB]

Do you mean:

Full - 100/0 -- 100% Attack
Balance - 50/50 -- 50% Defense, 50% Attack
Defense - 0/100 -- 100% Defense

Curious :huh:

 

[Yngwie]

No, I meant the actual calculation in the source,

The damage calculation for example is in weapons.cpp line 147

int32_t Weapons::getMaxWeaponDamage(int32_t level, int32_t attackSkill, int32_t attackValue, float attackFactor)
{
	return (int32_t)std::ceil((2 * attackValue * (attackSkill + 5.8) / 25 + (level - 1) / 10.) / attackFactor);
}

 

[Kiwi Dan]

Maybe this is what you are looking for?

int32_t Player::getDefense() const
{
	int32_t baseDefense = 5;
	int32_t defenseValue = 0;
	int32_t defenseSkill = 0;
	int32_t extraDefense = 0;
	float defenseFactor = getDefenseFactor();
	const Item* weapon = NULL;
	const Item* shield = NULL;
	getShieldAndWeapon(shield, weapon);

	if(weapon)
	{
		defenseValue = baseDefense + weapon->getDefense();
		extraDefense = weapon->getExtraDefense();
		defenseSkill = getWeaponSkill(weapon);
	}

	if(shield && shield->getDefense() >= defenseValue)
	{
		defenseValue = baseDefense + shield->getDefense() + extraDefense;
		defenseSkill = getSkill(SKILL_SHIELD, SKILL_LEVEL);
	}

	if(vocation->defenseMultipler != 1.0)
		defenseValue = int32_t(defenseValue * vocation->defenseMultipler);

	return ((int32_t)std::ceil(((float)(defenseSkill * (defenseValue * 0.015)) + (defenseValue * 0.1)) * defenseFactor));
}

But when I do: ((((21 * (55 * 0.015)) + (55 * 0.1)) * 1)) I get 22.825 and I made a monster to hit 30s constantly, and he sometimes hits 1s 2s etc. Shouldn't he not be able to?

 

[Yngwie]

There's a seperate armor calculation which might be blocking the last 6-7 points

 

[Kiwi Dan]

There's a seperate armor calculation which might be blocking the last 6-7 points

Oh cool, thanks.

I found this, but it makes the value lower:

		if(checkArmor)
		{
			int32_t armorValue = getArmor();
			int32_t minArmorReduction = 0;
			int32_t maxArmorReduction = 0;
			if(armorValue > 1)
			{
				minArmorReduction = (int32_t)std::ceil(armorValue * 0.475);
				maxArmorReduction = (int32_t)std::ceil(((armorValue * 0.475) - 1) + minArmorReduction);
			}
			else if(armorValue == 1)
			{
				minArmorReduction = 1;
				maxArmorReduction = 1;
			}

			damage -= random_range(minArmorReduction, maxArmorReduction);
			if(damage <= 0)
			{
				damage = 0;
				blockType = BLOCK_ARMOR;
			}
		}

I checked both afformentioned formulas and they're not 100% accurate. I have a shield (nothing else) with 14 defence and 21 shielding = 6.225 (6) damage resistance and I'm getting hit 22... when the monster should hit 30 max all the time. So that's 2 off.