Merge pull request #1788 from Capostrophic/armorcond

Make unarmed creature attacks not affect armor condition (bug #2455)

CHANGELOG.md

@@ -4,6 +4,7 @@
     Bug #1990: Sunrise/sunset not set correct
     Bug #2222: Fatigue's effect on selling price is backwards
     Bug #2326: After a bound item expires the last equipped item of that type is not automatically re-equipped
+    Bug #2455: Creatures attacks degrade armor
     Bug #2562: Forcing AI to activate a teleport door sometimes causes a crash
     Bug #2772: Non-existing class or faction freezes the game
     Bug #2835: Player able to slowly move when overencumbered

apps/openmw/mwclass/npc.cpp

@@ -773,22 +773,24 @@ namespace MWClass
                 float x = damage / (damage + getArmorRating(ptr));
                 damage *= std::max(gmst.fCombatArmorMinMult->getFloat(), x);
                 int damageDiff = static_cast<int>(unmitigatedDamage - damage);
-                if (damage < 1)
-                    damage = 1;
+                damage = std::max(1.f, damage);
+                damageDiff = std::max(1, damageDiff);
 
                 MWWorld::InventoryStore &inv = getInventoryStore(ptr);
                 MWWorld::ContainerStoreIterator armorslot = inv.getSlot(hitslot);
                 MWWorld::Ptr armor = ((armorslot != inv.end()) ? *armorslot : MWWorld::Ptr());
                 if(!armor.isEmpty() && armor.getTypeName() == typeid(ESM::Armor).name())
+                {
+                    if (attacker.isEmpty() || (!attacker.isEmpty() && !(object.isEmpty() && !attacker.getClass().isNpc()))) // Unarmed creature attacks don't affect armor condition
                     {
                         int armorhealth = armor.getClass().getItemHealth(armor);
-                    armorhealth -= std::min(std::max(1, damageDiff),
-                                                 armorhealth);
+                        armorhealth -= std::min(damageDiff, armorhealth);
                         armor.getCellRef().setCharge(armorhealth);
 
                         // Armor broken? unequip it
                         if (armorhealth == 0)
                             armor = *inv.unequipItem(armor, ptr);
+                    }
 
                     if (ptr == MWMechanics::getPlayer())
                         skillUsageSucceeded(ptr, armor.getClass().getEquipmentSkill(armor), 0);

apps/openmw/mwmechanics/combat.cpp

@@ -114,6 +114,8 @@ namespace MWMechanics
         x = std::min(iBlockMaxChance, std::max(iBlockMinChance, x));
 
         if (Misc::Rng::roll0to99() < x)
+        {
+            if (!(weapon.isEmpty() && !attacker.getClass().isNpc())) // Unarmed creature attacks don't affect armor condition
             {
                 // Reduce shield durability by incoming damage
                 int shieldhealth = shield->getClass().getItemHealth(*shield);
@@ -122,7 +124,7 @@ namespace MWMechanics
                 shield->getCellRef().setCharge(shieldhealth);
                 if (shieldhealth == 0)
                     inv.unequipItem(*shield, blocker);
-
+            }
             // Reduce blocker fatigue
             const float fFatigueBlockBase = gmst.find("fFatigueBlockBase")->getFloat();
             const float fFatigueBlockMult = gmst.find("fFatigueBlockMult")->getFloat();