Change NPC skill AC bonus

Basically, live doesn't have an NPC's skill at the max for their class like we
do. So for now, we'll just set their SkillDefense bonus to value / 5

zone/attack.cpp

@@ -735,7 +735,7 @@ int Mob::ACSum()
 	// EQ math
 	ac = (ac * 4) / 3;
 	// anti-twink
-	if (GetLevel() < 50)
+	if (IsClient() && GetLevel() < 50)
 		ac = std::min(ac, 25 + 6 * GetLevel());
 	ac = std::max(0, ac + GetClassRaceACBonus());
 	if (IsNPC()) {
@@ -751,12 +751,19 @@ int Mob::ACSum()
 			owner = entity_list.GetMobID(CastToNPC()->GetSwarmOwner());
 		if (owner)
 			ac += owner->aabonuses.PetAvoidance + owner->spellbonuses.PetAvoidance + owner->itembonuses.PetAvoidance;
+		auto spell_aa_ac = aabonuses.AC + spellbonuses.AC;
+		ac += GetSkill(EQEmu::skills::SkillDefense) / 5;
+		if (EQEmu::ValueWithin(static_cast<int>(GetClass()), NECROMANCER, ENCHANTER))
+			ac += spell_aa_ac / 3;
+		else
+			ac += spell_aa_ac / 4;
+	} else { // TODO: so we can't set NPC skills ... so the skill bonus ends up being HUGE so lets nerf them a bit
+		auto spell_aa_ac = aabonuses.AC + spellbonuses.AC;
+		if (EQEmu::ValueWithin(static_cast<int>(GetClass()), NECROMANCER, ENCHANTER))
+			ac += GetSkill(EQEmu::skills::SkillDefense) / 2 + spell_aa_ac / 3;
+		else
+			ac += GetSkill(EQEmu::skills::SkillDefense) / 3 + spell_aa_ac / 4;
 	}
-	auto spell_aa_ac = aabonuses.AC + spellbonuses.AC;
-	if (EQEmu::ValueWithin(static_cast<int>(GetClass()), NECROMANCER, ENCHANTER))
-		ac += GetSkill(EQEmu::skills::SkillDefense) / 2 + spell_aa_ac / 3;
-	else
-		ac += GetSkill(EQEmu::skills::SkillDefense) / 3 + spell_aa_ac / 4;
 
 	if (GetAGI() > 70)
 		ac += GetAGI() / 20;