private float DoCalculateDamage(Creature attacker, Creature defender, WorldObject damageSource)
{
var playerAttacker = attacker as Player;
var playerDefender = defender as Player;
Attacker = attacker;
Defender = defender;
CombatType = damageSource.ProjectileSource == null?attacker.GetCombatType() : CombatType.Missile;
DamageSource = damageSource;
Weapon = damageSource.ProjectileSource == null?attacker.GetEquippedWeapon() : damageSource.ProjectileLauncher;
AttackType = attacker.AttackType;
AttackHeight = attacker.AttackHeight ?? AttackHeight.Medium;
// check lifestone protection
if (playerDefender != null && playerDefender.UnderLifestoneProtection)
{
LifestoneProtection = true;
playerDefender.HandleLifestoneProtection();
return(0.0f);
}
if (defender.Invincible)
{
return(0.0f);
}
// overpower
if (attacker.Overpower != null)
{
Overpower = Creature.GetOverpower(attacker, defender);
}
// evasion chance
if (!Overpower)
{
EvasionChance = GetEvadeChance(attacker, defender);
if (EvasionChance > ThreadSafeRandom.Next(0.0f, 1.0f))
{
Evaded = true;
return(0.0f);
}
}
// get base damage
if (playerAttacker != null)
{
GetBaseDamage(playerAttacker);
}
else
{
GetBaseDamage(attacker, AttackMotion ?? MotionCommand.Invalid);
}
if (DamageType == DamageType.Undef && !AllowDamageTypeUndef.Contains(damageSource.WeenieClassId))
{
log.Error($"DamageEvent.DoCalculateDamage({attacker?.Name} ({attacker?.Guid}), {defender?.Name} ({defender?.Guid}), {damageSource?.Name} ({damageSource?.Guid})) - DamageType == DamageType.Undef");
GeneralFailure = true;
}
if (GeneralFailure)
{
return(0.0f);
}
// get damage modifiers
PowerMod = attacker.GetPowerMod(Weapon);
AttributeMod = attacker.GetAttributeMod(Weapon);
SlayerMod = WorldObject.GetWeaponCreatureSlayerModifier(attacker, defender);
// ratings
DamageRatingBaseMod = Creature.GetPositiveRatingMod(attacker.GetDamageRating());
RecklessnessMod = Creature.GetRecklessnessMod(attacker, defender);
SneakAttackMod = attacker.GetSneakAttackMod(defender);
HeritageMod = attacker.GetHeritageBonus(Weapon) ? 1.05f : 1.0f;
DamageRatingMod = Creature.AdditiveCombine(DamageRatingBaseMod, RecklessnessMod, SneakAttackMod, HeritageMod);
// damage before mitigation
DamageBeforeMitigation = BaseDamage * AttributeMod * PowerMod * SlayerMod * DamageRatingMod;
// critical hit?
var attackSkill = attacker.GetCreatureSkill(attacker.GetCurrentWeaponSkill());
CriticalChance = WorldObject.GetWeaponCriticalChance(attacker, attackSkill, defender);
if (CriticalChance > ThreadSafeRandom.Next(0.0f, 1.0f))
{
if (playerDefender != null && playerDefender.AugmentationCriticalDefense > 0)
{
var criticalDefenseMod = playerAttacker != null ? 0.05f : 0.25f;
var criticalDefenseChance = playerDefender.AugmentationCriticalDefense * criticalDefenseMod;
if (criticalDefenseChance > ThreadSafeRandom.Next(0.0f, 1.0f))
{
CriticalDefended = true;
}
}
if (!CriticalDefended)
{
IsCritical = true;
CriticalDamageMod = 1.0f + WorldObject.GetWeaponCritDamageMod(attacker, attackSkill, defender);
// recklessness excluded from crits
RecklessnessMod = 1.0f;
DamageRatingMod = Creature.AdditiveCombine(DamageRatingBaseMod, SneakAttackMod, HeritageMod);
DamageBeforeMitigation = BaseDamageMod.MaxDamage * AttributeMod * PowerMod * SlayerMod * DamageRatingMod * CriticalDamageMod;
}
}
// armor rending and cleaving
var armorRendingMod = 1.0f;
if (Weapon != null && Weapon.HasImbuedEffect(ImbuedEffectType.ArmorRending))
{
armorRendingMod = WorldObject.GetArmorRendingMod(attackSkill);
}
var armorCleavingMod = attacker.GetArmorCleavingMod(Weapon);
var ignoreArmorMod = Math.Min(armorRendingMod, armorCleavingMod);
// get body part / armor pieces / armor modifier
if (playerDefender != null)
{
// select random body part @ current attack height
GetBodyPart(AttackHeight);
// get player armor pieces
Armor = attacker.GetArmorLayers(playerDefender, BodyPart);
// get armor modifiers
ArmorMod = attacker.GetArmorMod(DamageType, Armor, Weapon, ignoreArmorMod);
}
else
{
// determine height quadrant
Quadrant = GetQuadrant(Defender, Attacker, AttackHeight, DamageSource);
// select random body part @ current attack height
GetBodyPart(Defender, Quadrant);
if (Evaded)
{
return(0.0f);
}
Armor = CreaturePart.GetArmorLayers(PropertiesBodyPart.Key);
// get target armor
ArmorMod = CreaturePart.GetArmorMod(DamageType, Armor, Attacker, Weapon, ignoreArmorMod);
}
if (Weapon != null && Weapon.HasImbuedEffect(ImbuedEffectType.IgnoreAllArmor))
{
ArmorMod = 1.0f;
}
// get resistance modifiers
WeaponResistanceMod = WorldObject.GetWeaponResistanceModifier(attacker, attackSkill, DamageType);
if (playerDefender != null)
{
ResistanceMod = playerDefender.GetResistanceMod(DamageType, Attacker, Weapon, WeaponResistanceMod);
}
else
{
var resistanceType = Creature.GetResistanceType(DamageType);
ResistanceMod = (float)Math.Max(0.0f, defender.GetResistanceMod(resistanceType, Attacker, Weapon, WeaponResistanceMod));
}
// damage resistance rating
DamageResistanceRatingMod = Creature.GetNegativeRatingMod(defender.GetDamageResistRating(CombatType));
// get shield modifier
ShieldMod = defender.GetShieldMod(attacker, DamageType, Weapon);
// calculate final output damage
Damage = DamageBeforeMitigation * ArmorMod * ShieldMod * ResistanceMod * DamageResistanceRatingMod;
DamageMitigated = DamageBeforeMitigation - Damage;
return(Damage);
}
private float DoCalculateDamage(Creature attacker, Creature defender, WorldObject damageSource)
{
var playerAttacker = attacker as Player;
var playerDefender = defender as Player;
Attacker = attacker;
Defender = defender;
CombatType = damageSource.ProjectileSource == null ? CombatType.Melee : CombatType.Missile;
DamageSource = damageSource;
Weapon = damageSource.ProjectileSource == null?attacker.GetEquippedMeleeWeapon() : damageSource.ProjectileLauncher;
AttackType = attacker.AttackType;
AttackHeight = attacker.AttackHeight ?? AttackHeight.Medium;
// check lifestone protection
if (playerDefender != null && playerDefender.UnderLifestoneProtection)
{
LifestoneProtection = true;
playerDefender.HandleLifestoneProtection();
return(0.0f);
}
if (defender.Invincible)
{
return(0.0f);
}
// overpower
if (attacker.Overpower != null)
{
Overpower = Creature.GetOverpower(attacker, defender);
}
// evasion chance
if (!Overpower)
{
EvasionChance = GetEvadeChance(attacker, defender);
if (EvasionChance > ThreadSafeRandom.Next(0.0f, 1.0f))
{
Evaded = true;
return(0.0f);
}
}
// get base damage
if (playerAttacker != null)
{
GetBaseDamage(playerAttacker);
}
else
{
GetBaseDamage(attacker, AttackMotion ?? MotionCommand.Invalid, AttackHook);
}
if (DamageType == DamageType.Undef && !AllowDamageTypeUndef.Contains(damageSource.WeenieClassId))
{
log.Error($"DamageEvent.DoCalculateDamage({attacker?.Name} ({attacker?.Guid}), {defender?.Name} ({defender?.Guid}), {damageSource?.Name} ({damageSource?.Guid})) - DamageType == DamageType.Undef");
GeneralFailure = true;
}
if (GeneralFailure)
{
return(0.0f);
}
// get damage modifiers
PowerMod = attacker.GetPowerMod(Weapon);
AttributeMod = attacker.GetAttributeMod(Weapon);
SlayerMod = WorldObject.GetWeaponCreatureSlayerModifier(Weapon, attacker, defender);
// ratings
DamageRatingBaseMod = Creature.GetPositiveRatingMod(attacker.GetDamageRating());
RecklessnessMod = Creature.GetRecklessnessMod(attacker, defender);
SneakAttackMod = attacker.GetSneakAttackMod(defender);
HeritageMod = attacker.GetHeritageBonus(Weapon) ? 1.05f : 1.0f;
DamageRatingMod = Creature.AdditiveCombine(DamageRatingBaseMod, RecklessnessMod, SneakAttackMod, HeritageMod);
// damage before mitigation
DamageBeforeMitigation = BaseDamage * AttributeMod * PowerMod * SlayerMod * DamageRatingMod;
// critical hit?
var attackSkill = attacker.GetCreatureSkill(attacker.GetCurrentWeaponSkill());
CriticalChance = WorldObject.GetWeaponCriticalChance(Weapon, attacker, attackSkill, defender);
// https://asheron.fandom.com/wiki/Announcements_-_2002/08_-_Atonement
// It should be noted that any time a character is logging off, PK or not, all physical attacks against them become automatically critical.
// (Note that spells do not share this behavior.) We hope this will stress the need to log off in a safe place.
if (playerDefender != null && (playerDefender.IsLoggingOut || playerDefender.PKLogout))
{
CriticalChance = 1.0f;
}
if (CriticalChance > ThreadSafeRandom.Next(0.0f, 1.0f))
{
if (playerDefender != null && playerDefender.AugmentationCriticalDefense > 0)
{
var criticalDefenseMod = playerAttacker != null ? 0.05f : 0.25f;
var criticalDefenseChance = playerDefender.AugmentationCriticalDefense * criticalDefenseMod;
if (criticalDefenseChance > ThreadSafeRandom.Next(0.0f, 1.0f))
{
CriticalDefended = true;
}
}
if (!CriticalDefended)
{
IsCritical = true;
// verify: CriticalMultiplier only applied to the additional crit damage,
// whereas CD/CDR applied to the total damage (base damage + additional crit damage)
CriticalDamageMod = 1.0f + WorldObject.GetWeaponCritDamageMod(Weapon, attacker, attackSkill, defender);
CriticalDamageRatingMod = Creature.GetPositiveRatingMod(attacker.GetCritDamageRating());
// recklessness excluded from crits
RecklessnessMod = 1.0f;
DamageRatingMod = Creature.AdditiveCombine(DamageRatingBaseMod, CriticalDamageRatingMod, SneakAttackMod, HeritageMod);
DamageBeforeMitigation = BaseDamageMod.MaxDamage * AttributeMod * PowerMod * SlayerMod * DamageRatingMod * CriticalDamageMod;
}
}
// armor rending and cleaving
var armorRendingMod = 1.0f;
if (Weapon != null && Weapon.HasImbuedEffect(ImbuedEffectType.ArmorRending))
{
armorRendingMod = WorldObject.GetArmorRendingMod(attackSkill);
}
var armorCleavingMod = attacker.GetArmorCleavingMod(Weapon);
var ignoreArmorMod = Math.Min(armorRendingMod, armorCleavingMod);
// get body part / armor pieces / armor modifier
if (playerDefender != null)
{
// select random body part @ current attack height
GetBodyPart(AttackHeight);
// get player armor pieces
Armor = attacker.GetArmorLayers(playerDefender, BodyPart);
// get armor modifiers
ArmorMod = attacker.GetArmorMod(playerDefender, DamageType, Armor, Weapon, ignoreArmorMod);
}
else
{
// determine height quadrant
Quadrant = GetQuadrant(Defender, Attacker, AttackHeight, DamageSource);
// select random body part @ current attack height
GetBodyPart(Defender, Quadrant);
if (Evaded)
{
return(0.0f);
}
Armor = CreaturePart.GetArmorLayers(PropertiesBodyPart.Key);
// get target armor
ArmorMod = CreaturePart.GetArmorMod(DamageType, Armor, Attacker, Weapon, ignoreArmorMod);
}
if (Weapon != null && Weapon.HasImbuedEffect(ImbuedEffectType.IgnoreAllArmor))
{
ArmorMod = 1.0f;
}
// get resistance modifiers
WeaponResistanceMod = WorldObject.GetWeaponResistanceModifier(Weapon, attacker, attackSkill, DamageType);
if (playerDefender != null)
{
ResistanceMod = playerDefender.GetResistanceMod(DamageType, Attacker, Weapon, WeaponResistanceMod);
}
else
{
var resistanceType = Creature.GetResistanceType(DamageType);
ResistanceMod = (float)Math.Max(0.0f, defender.GetResistanceMod(resistanceType, Attacker, Weapon, WeaponResistanceMod));
}
// damage resistance rating
DamageResistanceRatingMod = DamageResistanceRatingBaseMod = defender.GetDamageResistRatingMod(CombatType);
if (IsCritical)
{
CriticalDamageResistanceRatingMod = Creature.GetNegativeRatingMod(defender.GetCritDamageResistRating());
DamageResistanceRatingMod = Creature.AdditiveCombine(DamageResistanceRatingBaseMod, CriticalDamageResistanceRatingMod);
}
// get shield modifier
ShieldMod = defender.GetShieldMod(attacker, DamageType, Weapon);
// calculate final output damage
Damage = DamageBeforeMitigation * ArmorMod * ShieldMod * ResistanceMod * DamageResistanceRatingMod;
DamageMitigated = DamageBeforeMitigation - Damage;
return(Damage);
}