public float GetResistanceMod(DamageType damageType, WorldObject damageSource, float weaponResistanceMod)
{
var ignoreMagicResist = damageSource != null ? damageSource.IgnoreMagicResist : false;
var resistanceType = Creature.GetResistanceType(damageType);
if (ignoreMagicResist)
{
return((float)Creature.GetNaturalResistance(resistanceType));
}
else
{
return((float)Creature.GetResistanceMod(resistanceType, weaponResistanceMod));
}
}
/// <summary>
/// Calculates the damage for a spell projectile
/// Used by war magic, void magic, and life magic projectiles
/// </summary>
public double?CalculateDamage(WorldObject _source, Creature target, ref bool criticalHit)
{
var source = _source as Creature;
var sourcePlayer = source as Player;
var targetPlayer = target as Player;
if (source == null || targetPlayer != null && targetPlayer.Invincible == true)
{
return(null);
}
// target already dead?
if (target.Health.Current <= 0)
{
return(-1);
}
// check lifestone protection
if (targetPlayer != null && targetPlayer.UnderLifestoneProtection)
{
targetPlayer.HandleLifestoneProtection();
return(null);
}
double damageBonus = 0.0f, warSkillBonus = 0.0f, finalDamage = 0.0f;
var resistanceType = GetResistanceType(Spell.DamageType);
var resisted = source.ResistSpell(target, Spell);
if (resisted != null && resisted == true)
{
return(null);
}
CreatureSkill attackSkill = null;
var sourceCreature = source as Creature;
if (sourceCreature != null)
{
attackSkill = sourceCreature.GetCreatureSkill(Spell.School);
}
// critical hit
var critical = GetWeaponMagicCritFrequencyModifier(source, attackSkill);
if (ThreadSafeRandom.Next(0.0f, 1.0f) < critical)
{
criticalHit = true;
}
bool isPVP = sourcePlayer != null && targetPlayer != null;
var elementalDmgBonus = GetCasterElementalDamageModifier(source, target, Spell.DamageType);
// Possible 2x + damage bonus for the slayer property
var slayerBonus = GetWeaponCreatureSlayerModifier(source, target);
// life magic projectiles: ie., martyr's hecatomb
if (Spell.School == MagicSchool.LifeMagic)
{
var lifeMagicDamage = LifeProjectileDamage * Spell.DamageRatio;
// could life magic projectiles crit?
// if so, did they use the same 1.5x formula as war magic, instead of 2.0x?
if (criticalHit)
{
damageBonus = lifeMagicDamage * 0.5f * GetWeaponCritMultiplierModifier(source, attackSkill);
}
finalDamage = (lifeMagicDamage + damageBonus) * elementalDmgBonus * slayerBonus;
return(finalDamage);
}
// war magic projectiles (and void currently)
else
{
if (criticalHit)
{
if (isPVP) // PvP: 50% of the MIN damage added to normal damage roll
{
damageBonus = Spell.MinDamage * 0.5f;
}
else // PvE: 50% of the MAX damage added to normal damage roll
{
damageBonus = Spell.MaxDamage * 0.5f;
}
var critDamageMod = GetWeaponCritMultiplierModifier(source, attackSkill);
damageBonus *= critDamageMod;
}
/* War Magic skill-based damage bonus
* http://acpedia.org/wiki/Announcements_-_2002/08_-_Atonement#Letter_to_the_Players
*/
if (sourcePlayer != null && Spell.School == MagicSchool.WarMagic)
{
var warSkill = source.GetCreatureSkill(Spell.School).Current;
if (warSkill > Spell.Power)
{
// Bonus clamped to a maximum of 50%
var percentageBonus = Math.Clamp((warSkill - Spell.Power) / 100.0f, 0.0f, 0.5f);
warSkillBonus = Spell.MinDamage * percentageBonus;
}
}
var baseDamage = ThreadSafeRandom.Next(Spell.MinDamage, Spell.MaxDamage);
finalDamage = baseDamage + damageBonus + warSkillBonus;
finalDamage *= target.GetNaturalResistance(resistanceType, GetWeaponResistanceModifier(source, attackSkill, Spell.DamageType))
* elementalDmgBonus * slayerBonus;
return(finalDamage);
}
}
